Showing papers on "Spray tower published in 2019"

Pilot-scale experiment and simulation optimization of dual-loop wet flue gas desulfurization spray scrubbers

Abstract: The efficiency of wet flue gas desulfurization (WFGD) used in thermal power plants that burn high-sulfur coal can be improved by adopting dual-loop spray tower (DLST). In this paper, the process of gas–liquid flow, mass transfer and chemical reaction in the DLST were fully investigated through a pilot-scale DLST and the corresponding numerical model. The numerical model was verified based on the experiment and applied to predict a DLST of 200 MW coal-fired unit. Investigation results show that higher the inlet SO2 concentration, more significant advantage on improving the desulfurization efficiency for DLST. The mass transfer resistance of liquid-film is still the main effect of SO2 absorption for the upper and lower loops in DLST. The ratios of the gas-film resistance to liquid-film resistance in the upper and lower loops are 0.65 and 0.35, respectively. The designed size of the bowl separator has a significant effect on the system resistance loss. The minimum ratio between the diameter of the bowl and the diameter of the desulfurization tower to avoid “flooding” phenomenon above the bowl separator is about 0.7. Furtherly, the lowest system operating resistance loss can be obtained when the ratio is about 0.82. The simulation results of the desulfurization efficiency and system resistance loss agree well with the test data.

Study on Interfacial Surface in Modified Spray Tower

Abstract: This paper presents an analysis of the changes in interfacial surface and the size of droplets formed in a spray tower. The interfacial surface and the size of droplets formed are of fundamental importance to the performance of the equipment, both in terms of pressure drop and process efficiency. Liquid film and droplet sizes were measured using a microphotography technique. The confusors studied were classical, with profiled inside surface, and with double profiled inside surface. The liquids studied were water and aqueous solutions of high-molecular polyacrylamide (PAA) of power-law characteristics. The ranges of process Reynolds number studied were as follows: ReG ∈ (42,700; 113,000), ReL ∈ (170; 15,200). A dimensionless correlation for reduced Sauter mean diameter is proposed.

Experimental evidences on the chemi-electro-hydrodynamic absorption of sulphur dioxide in electrified water sprays

Abstract: This paper explores the effects of electrification of water sprays on the absorption of sulphur dioxide from exhaust gases. The results of this paper are based on experimental evidences related to the use of electrified (distilled) water in a lab-scale scrubber, coupled with independent determination of droplets morphology and charge. Experiments clearly show that electrification is associated with an appreciable improvement of sulphur dioxide absorption rate, reducing the height of transfer unit, HTU, of the lab-scale unit by at least 40%, with peaks over 80% with low supplementary costs, and it candidates to be a valuable innovation for spray tower absorbers. Water electrification is accompanied by chemical-physics and morphological modifications of the sprayed droplets influencing the conventional absorption rate of soluble gases. The experimental and theoretical evidences indicate the need to analyse the electrified absorption within a new and integrated theoretical framework that we define chemi-electro-hydrodynamics (CEHD).

System and method for reducing the amount of sulfur oxides in exhaust gas

Abstract: The present application relates to a spray tower (1) arranged to be vertically positioned and having an inner space (100), wherein the spray tower comprises, a central exhaust gas pipe (7) arranged for introducing exhaust gas into the inner space of the spray tower through an exhaust gas inlet (2) positioned at a proximal end (7a) of the central exhaust gas pipe, the central exhaust gas pipe being positioned at a bottom end (1a) of the spray tower in installed position, the central exhaust gas pipe being in fluid connection with the inner space of the spray tower through an exhaust gas inlet (2) at a top end of the central exhaust gas pipe, and at least one exhaust gas outlet (3 arranged for withdrawing purified exhaust gas from the inner space of the spray tower, the exhaust gas outlet being positioned at a top end (1b) of the spray tower in installed position, the exhaust gas outlet being in fluid connection with the inner space of the spray tower, wherein from the exhaust gas inlet to the exhaust gas outlet, a general exhaust gas flow is passing through the inner space of the spray tower, one or more spray devices (41, 42) configured to provide a stream of scrubber liquid within the inner space of the spray tower counter current to the general exhaust gas flow, and at least two engine exhaust gas pipes (6) being in fluid connection with the distal end (7b) of the central exhaust gas pipe. Furthermore, a method for reducing the amount of SOx in exhaust gas is described.

Ethylene oxide waste gas absorption coupling catalytic reaction purification device and process

Abstract: The invention discloses an ethylene oxide waste gas absorption coupling catalytic reaction purification device and process. High-concentration ethylene oxide waste gas is absorbed by several-level absorption spray tower water, remaining waste gas is emitted on standard, ethylene oxide water solution collected by an absorption spray tower kettle enters a hydration reactor to perform ethylene oxidehydration reaction to generate high-concentration ethylene glycol, part of ethylene glycol water solution reflows into the tower kettle after reaction, clear water is added, the ethylene glycol watersolution continues to serve as ethylene oxide waste gas absorption solution to be used, and parts of reaction products returns to an ethylene glycol water solution storage tank to be recycled. According to the process, absorption and reaction are divided into two portions of an independent unit, the absorption efficiency of a whole process is high, operation processes are simple, energy consumption is low, resource utilization of the absorption solution is achieved, occupied area is small, operation is simple, integrated operating cost is low, safety is high, emission of waste liquid is omitted, and the process is applicable to control of ethylene oxide waste gas of various large and small sterilization enterprises.

Numerical Simulation of a New Horizontal Spray Tower for Sintering Flue Gas Desulfurization

Abstract: The flow rate and temperature of the flue gas from a sintering machine can fluctuate in a wide range; thus, the follow-up desulfurization facility should be operated stably and maintained on-line. A new type of horizontal spray tower, which can achieve high efficiency with low pressure loss and easy maintenance, was invented by the University of Science and Technology Beijing. A 3D multiphase computational fluid dynamics (CFD) model of the horizontal spray tower was constructed with Fluent software to study the internal flow field and the reaction of the horizontal spray tower. The standard k–ξ model and the Eulerian–Lagrangian model were adopted in this study. Results show that the flow field in the spray tower can be numerically simulated utilizing the CFD technology. The inlet angle exerts an important effect on the flue gas flow field of the horizontal tower. When the first-order efficiency and the economic indicators are taken into account, an inlet angle of 75° is recommended in the top inlet intake mode, whereas a 30° inlet angle performs the best in the side inlet intake mode. The spray configuration exerts an important influence. When the spray cone angle is 110° and the installation height is controlled at 0.8 m from the top surface, the smoke residence time is long, and the contact is sufficient. The results can provide theoretical support for the optimization of the structure of the spray tower.

Efficient concentration treatment system and method for organic waste liquid

Abstract: The invention discloses an efficient concentration treatment system for organic waste liquid. The system comprises a combustion chamber, an evaporation chamber, a gas-liquid separator, a spray tower,a negative pressure evaporation chamber, a secondary combustion chamber, an organic waste liquid preheater, an air preheater and a dust collector. The invention further discloses an efficient concentration treatment method for the organic waste liquid. Four optional working modes can be provided. Accordingly, the pollution problem caused by the phenomenon that in the evaporation concentration process, flue gas contains volatile organic matter can be solved while efficient treatment of organic waste liquid such as landfill leachate and high salinity industrial waste liquid which is highly corrosive, viscous and prone to crystallization and scaling is guaranteed.

High-temperature flue gas treatment device

Abstract: The utility model discloses a high-temperature flue gas treatment device. an explosion-proof mechanism is fixedly mounted on the outer surface of the spray tower body; a gas outlet pipe is fixedly connected to the top of the spray tower body, a heat exchange mechanism is fixedly connected to the outer side of the spray tower body, a slag discharging opening is formed in the bottom of the spray tower body, a high-temperature-resistant filtering mechanism is fixedly connected to the outer side of the heat exchange mechanism, and an air blower is fixedly mounted at the top of the high-temperature-resistant filtering mechanism; high-temperature-resistant filtering mechanism, high-temperature flue gas can be filtered; the effects of removing large-particle smoke dust in the high-temperature flue gas and adsorbing harmful gas are achieved; the spray tower is simple in structure and convenient to operate, pollution of high-temperature flue gas to the atmosphere is avoided, alkaline substancescan be sprayed through the spray mechanism and the atomizing spray heads, acidic substances in the high-temperature flue gas are neutralized, the effect of purifying the high-temperature flue gas isachieved, meanwhile, soluble smoke dust can be intercepted and condensed through the spray mechanism, and the working efficiency of the spray tower body is improved.

Waste gas treatment equipment and method

Abstract: The invention relates to waste gas treatment equipment and method and belongs to the field of environmental protection equipment. The waste gas treatment equipment comprises an activated carbon adsorption box, a spray tower and a circulating water tank, wherein the activated carbon adsorption box and the circulating water tank are both communicated with the spray tower; the activated carbon adsorption box comprises a box body, an adsorption plate, a limiting device, a positioning device and a driving device; the limiting device is mounted in the box body; the adsorption plate is mounted on thelimiting device; the positioning device is in contact with the adsorption plate; the driving device is connected with the adsorption plate; the spray tower comprises a spray tower device, a sprayingdevice and a cyclone device; the spraying device and the cyclone device are both mounted in the spray tower device; the spraying device is positioned above the cyclone device; the circulating water tank comprises a circulating water tank device, a sludge conveying device, a blow-down apparatus and a water supply device; all the sludge conveying device, the blow-down apparatus and the water supplydevice communicate with the circulating water tank device; and both the box body and the sludge conveying device communicate with the spray tower device. The working efficiency is improved, and the waste gas treatment is complete.

Furniture processing paint room waste gas treatment system

Abstract: The utility model discloses a furniture processing paint room waste gas treatment system which comprises a paint spraying room, and a gas collecting hood is arranged in the paint spraying room; the gas collecting hood is connected to the paint mist filter through an exhaust pipe, and an axial flow fan is arranged on the section of the exhaust pipe; a gas outlet of the paint mist filter is connected to the spray tower; a gas outlet of the spray tower is connected to the activated carbon adsorber through a pipeline, and a centrifugal fan is arranged on the pipeline; and an air outlet of the activated carbon adsorber is connected with an exhaust funnel through a pipeline. When the paint spraying waste gas treatment device works, after paint spraying waste gas is collected by the gas collecting hood, most of paint mist is removed by the paint mist filter; entering a spray tower to remove residual paint mist and water-soluble organic matters; then the waste gas is introduced into a gas dryer through an induced draft fan to remove moisture and then enters an activated carbon adsorber, under the adsorption effect of the activated carbon adsorber, residual pollutants are adsorbed, the waste gas is purified, and finally the waste gas reaching the standard is exhausted through an exhaust funnel.

Wet purifying dust removing device capable of achieving ultralow particle emission

Abstract: The invention discloses a wet purifying dust removing device capable of achieving ultralow particle emission. The wet purifying dust removing device comprises an atomizing trapping tower, a spray tower and a cyclone dewatering tower, wherein an air feeding elbow is arranged at the top of the atomizing trapping tower, an atomizing nozzle is arranged at the upper part of the inner side of the atomizing trapping tower, and the bottom of the atomizing trapping tower is communicated with the bottom of the spray tower; a spray head is arranged at the upper part of the inner side of the spray tower,and a top air phase outlet of the spray tower is communicated with an upper air phase inlet of the cyclone dewatering tower; a purified air outlet pipe is arranged at the top of the cyclone dewateringtower. According to the wet purifying dust removing device disclosed by the invention, the atomizing trapping and spray trapping wet dust removing principle is utilized; an even flow distribution effect of a uniform air flow distribution plate, a colliding and bending effect of an upper-layer turbulent flow tray and a lower-layer turbulent flow tray to dust containing air flow and a colliding andbending effect of an upper-layer splashing tray and a lower-layer splashing tray to spray water are combined, so that a full vapor contact effect is improved, and an effective purifying and washing effect on the dust containing air flow is achieved; meanwhile, a cyclone dewatering device in the device can perform dewatering and dehumidifying treatment on the dust removed air.

Flue gas treatment technological process and equipment configuration thereof

Abstract: The invention discloses a flue gas treatment technological process and a system scheme of equipment configuration thereof. A hollow fiber membrane high dust treatment technology is utilized as a coreto achieve accurate separation on flue gas dust and achieve a microgram level, so that ways for more efficiently applying technologies of traditional wet desulphurization and denitrification, ultraviolet ray, catalysts, aeration, activated carbon and the like are created to form a novel technological process and a system scheme of equipment configuration. The technological process sequentially comprises the following steps: adjusting flue gas temperature; completely separating dust in flue gas; performing wet desulfurization and denitrification through aeration, ultraviolet light, catalysts and filler spray tower; adsorbing and cleaning pollutants of dioxin and the like through the activated carbon and the catalysts; exhausting tail gas through a chimney.

Waste gas treatment device in PVC glove production process

Abstract: The utility model relates to a waste gas treatment device, in particular to a waste gas treatment device in the production process of PVC gloves. According to the utility model, through three times ofcooling, a plasticizer and solvent oil in waste gas are condensed into small liquid drops which are easily adsorbed by the electrostatic adsorber, so that the ignition possibility is reduced. The device comprises a heat exchanger, a cooler, an electrostatic adsorber, an induced draft fan, a spray tower and a circulating water tank, a tube pass inlet of the heat exchanger is communicated with waste gas; a tube pass outlet is sequentially connected with a cooler tube pass, an electrostatic adsorber, an induced draft fan and a spray tower through pipelines; wherein a liquid outlet of the electrostatic adsorber is communicated with a feed port of the layering tank through a first branch pipe, a water outlet in the bottom of the spray tower is communicated with a spray layer of the spray towerthrough a spray pump, a discharge port in the bottom of the spray tower is communicated with a feed port of the layering tank through a second branch pipe, and a water outlet of the circulating watertank is communicated with a demisting layer of the spray tower through a cleaning pump.

Multi-stage purification device for recycling copper smelting furnace tail gas

Abstract: The utility model relates to a multistage purification device for recovering tail gas of a copper smelting furnace. Fan, one side of the fan is connected with an air inlet pipe; air outlet pipes are connected to two sides of the fan; the air outlet pipe is connected with a spray tower; a water pump is arranged at the upper end of the spray tower; the upper end of the water pump is connected with awater inlet pipe; one side of the water pump is connected with a water outlet pipe; the other end of the water outlet pipe is symmetrically connected with shunt pipes; the other end of the shunt pipeis connected with an annular pipe; a nozzle is arranged at the lower end of the annular pipe; the lower end of the spray tower is connected with a filter box; filter cloth is fixedly connected to thebottom of the filter box; one side of the top of the spray tower is connected with a flow guide pipe; the multi-stage tail gas purification device is simple in structure and reasonable in design, themulti-stage tail gas purification function can be achieved, dust and a small amount of metal in tail gas can be effectively removed, meanwhile, the desulfurization efficiency can be improved, the sulfur content in tail gas emission is reduced, and the emission standard is met.

Omnibearing centrifugal spray dryer

Abstract: The utility model provides an omnibearing centrifugal spray dryer The spray tower comprises a spray tower body erected on the support The spray tower is internally hollow; the spray tower sequentially comprises a spray area, a drying area and a discharging area from top to bottom The centrifugal spraying mechanism is positioned in the spraying area; the hot air drying mechanism is positioned onthe spray tower; the discharging mechanism is located in the drying area A spiral hot air pipe is arranged on a spray tower; the spiral hot air pipe is spirally arranged downwards; spiral hot air for drying materials is sprayed out through the hot air opening to form the effect similar to tornado, the atomized materials sprayed out of the centrifugal spraying mechanism are located in air holes of the spiral hot air all the time, the materials are promoted not to make contact with the inner wall of the spraying tower, and the technical problem that the atomized materials adhere to the inner wall of the spraying tower and are difficult to treat is solved

High-speed spiral-flow type spray purification tower

Abstract: The utility model discloses a high-speed spiral-flow type spray purification tower. The spray tower comprises a spray tower main body, a liquid storage tank, a water pump, a water pipe, an air guide device and a cyclone plate demister, wherein a cavity is formed in the spray tower main body; an air inlet bin is arranged at the bottom end of the cavity; a first Pall ring packing layer is fixedly connected to the inner wall of the cavity above the air inlet bin; a first spraying bin is arranged above the first Pall ring packing layer; a second Pall ring packing layer is fixedly connected to theinner wall of the cavity above the first spraying bin; an air guide device is fixedly connected to the bottom end of the second Pall ring packing layer, a second spraying bin is arranged above the second Pall ring packing layer, a rotational flow plate demister is fixedly connected to the inner wall of a cavity above the second spraying bin, a liquid storage tank is fixedly connected to the bottomend of the spraying tower body, and a water pump is fixedly connected to the right side of the upper end of the liquid storage tank. The air purifier is simple and reasonable in structure, good in purification effect, low in manufacturing cost and high in practicability.

Spray tower for dedusting and absorbing waste gas

Abstract: The utility model discloses a spray tower for dedusting and absorbing waste gas. The spray tower comprises a spray tower body, a gas inlet of the spray tower body communicates with one end of a gas inlet pipe; rotating shaft arranged in air inlet pipe, a first scraper is arranged on the inner wall of the air inlet pipe, the first scraper makes contact with the first filter screen, a first dust collecting hole is formed in the bottom of the inner wall of the air inlet pipe and located under the first scraper, a dust collecting box is arranged on the outer wall of the recycling pool, and a dustcollecting pipe is communicated between the dust collecting box and the first dust collecting hole. According to the utility model, before waste gas enters the spray tower body; waste gas flowing in the gas inlet pipe drives the wind wheel to rotate; the rotating shaft drives the first filter screen to rotate, so that the first scraper blade scrapes off smoke attached to the first filter screen, the reaction effect of absorption liquid and waste gas is prevented from being influenced, the absorption liquid can be repeatedly recycled through the pump and the spraying pipe, the waste gas treatment efficiency is improved, and the purchasing cost of the absorption liquid is saved.

System and method for desulfurization and denitration integrated treatment and resource utilization for flue gas by red mud

Abstract: The invention relates to a system and a method for desulfurization and denitration integrated treatment and resource utilization for flue gas by red mud, and belongs to the technical field of resourceutilization and environmental protection. The system comprises a desulfurization spray tower, an ozone generator, a denitration spray tower, a slurry mixing tank, a slurry storage tank, a vacuum filter, an ammonia water neutralization tank, an aluminum hydroxide precipitation tank, an ammonia water tank, an aluminum hydroxide storage tank, a filter press, an ammonia distillation tower, a dephlegmator, a cooler, a concentrated ammonia water storage tank, a gypsum precipitation tank and an anaerobic biochemical tank. The flue gas is subjected to desulfurization and denitration treatment by redmud slurry, SO2 and NO in the flue gas are removed, so that SO2 and NO in the flue gas reach the emission standard, aluminum hydroxide in the red mud slurry is recovered by an ammonia precipitant, wastewater is returned to be used for slurry preparation after precipitation and hydration biochemical treatment, and desulfurization and denitration integrated treatment and resource utilization of thered mud and the flue gas are realized.

Heat recovery from flue gas condensing and overall impact on CHP efficiency

Abstract: LAPPEENRANTA UNIVERSITY OF TECHNOLOGY LUT School of Energy Systems Master’s Degree Programme in Energy Systems

Equipment for treating, purifying and recycling hydrogen chloride tail gas generated by industrial chlorination reaction

Abstract: The utility model discloses equipment for treating, purifying and recycling hydrogen chloride tail gas generated by industrial chlorination reaction. Including a base, a spray tower is arranged at oneend of the top of the base; a first-stage cooler is arranged on one side of the spray tower, a second-stage cooler is arranged on one side of the first-stage cooling tank, a precise demister is arranged on one side of the second-stage cooler, a heat exchange pipe is arranged in the first-stage cooler, and a first air guide pipe is arranged between the top of the first-stage cooler and the bottomof the second-stage cooler. According to the utility model, the spray tower, the first-stage cooler, the second-stage cooler and the precise demister are arranged; the heat exchange pipe, the baffle and the water flow in the spiral direction, so that the cooling of the hydrogen chloride tail gas is facilitated, the cooling efficiency is improved, the consumption of cooling water is reduced, and the organic liquid recovery pipe is arranged, so that the recycling of an organic matter solution is facilitated.

Wet removal device for flue gas pollutants of industrial kiln

Abstract: The utility model discloses a wet removal device for flue gas pollutants of an industrial kiln. The device comprises an industrial kiln and a spray tower, the industrial kiln and the spray tower are arranged adjacently, a connecting pipe communicated with the spray tower is fixedly connected to the upper end face of the industrial kiln, a water storage pool is arranged at the bottom end of the spray tower, and a water pump is fixedly connected to the side wall of one end of the water storage pool. According to the utility model, under the impact of high-pressure water flow; helical blade rotation, the splitter plate is driven to rotate around the sealing swivel; the washing liquid is sprayed out from the high-pressure atomizing spray head in an atomized water drop form; under the driving of the splitter plate, the acting area of water mist sprayed by the high-pressure atomizing spray head is increased, so that the atomized washing liquid is in full contact with and reacts with the fluegas, the purification effect on the flue gas of the industrial kiln is remarkably enhanced, only two layers of spraying devices need to be arranged, and a large amount of production cost is reduced.

White smoke condensation purifying system and control method thereof

Abstract: The invention relates to a white smoke condensation purifying system and a control method of the white smoke condensation purifying system and belongs to the technical field of smoke condensation purifying equipment. The white smoke condensation purifying system comprises an evaporation type cooling spray tower. The upper end of the evaporation type cooling spray tower is provided with a desulfurization smoke inlet pipe. The lower end of the evaporation type cooling spray tower is provided with a circulation groove. Spray tower water is contained in the circulation groove. A gas-liquid separation tower is arranged on the side edge of the evaporation type cooling spray tower. Separation tower water is contained in the gas-liquid separation tower. A demister is arranged on the upper side ofseparation tower water. A water communication pipe is arranged between the gas-liquid separation tower and the circulation groove. A smoke communication pipe located between the gas-liquid separationtower and the circulation groove is arranged on the upper side of the water communication pipe. The side edge of the gas-liquid separation tower is provided with a chimney communicating with the upperend of the gas-liquid separation tower through a pipeline. The white smoke condensation purifying system has the advantages of being compact in structure, high in efficiency and low in cost, saving energy, reducing emission and reusing reclaimed water and improves the smoke cooling, dedusting and desulfurating efficiency. It is avoided that the smoke condenses to generates small droplets in the discharge and diffusion process.

Waste gas treatment system

Abstract: The invention relates to a waste gas treatment system. The waste gas treatment system comprises a spray tower, wherein the spray tower comprises a tower body; the side wall of the lower portion of thetower body communicates with an air inlet tube, the upper end of the tower body communicates with an air outlet tube, and the lower end of the tower body communicates with a liquid outlet tube; a plurality of layers of spray pipes are arranged inside the tower body along the height direction of the tower body; a partition plate is arranged in the tower body and positioned on a section between thespraying tube on the bottom layer and the air inlet tube; the partition plate communicates with a plurality of air caps; each air cap comprises a cover which is in threaded connection to the partition plate and a cover cap which is inserted in the upper end of the cover and is rotatably connected to the cover, a first exhaust opening is formed in the side wall of the section, which is positionedin the cover cap, of the cover, and a plurality of second exhaust openings are formed in the side wall of the cover cap. The waste gas treatment system has the advantages that it ensures that waste gas and treatment liquid are fully neutralized, and the waste gas treatment effect of the treatment liquid is improved.

Waste gas treatment device with multi-stage filtering and purifying function

Abstract: The utility model discloses a waste gas treatment device with a multi-stage filtering and purifying function The device comprises a spray tower, a low-temperature plasma purifier, a catalytic oxidation tank and a filter chamber, the bottom of the spray tower is connected with a gas inlet pipeline; a packing layer and a spraying plate are arranged in the spraying tower; the spraying plate is mounted above the packing layer; wherein a first connecting pipe is fixed at the top end of the spray tower, the other end of the first connecting pipe is connected with an input port of a low-temperatureplasma purifier, an output port of the low-temperature plasma purifier is connected with an input port of a catalytic oxidation tank, and ultraviolet emitters are uniformly mounted in the catalytic oxidation tank By arranging the spray tower, the low-temperature plasma purifier, the catalytic oxidation tank, the ultraviolet emitter and the filter chamber, the problems that the gas purification effect of equipment is imperfect, pollutant residues exist in waste gas and a quality detection mechanism is lacked are solved

Waste gas treatment device for aluminum ingot casting

Abstract: The utility model discloses a waste gas treatment device for aluminum ingot casting. The device comprises a suction fan, a filter bag dust remover, a desulfurization spray tower and an adsorption exhaust pipe, the suction fan is mounted in an aluminum ingot casting workshop; one end of the suction fan is connected with a first pipeline; the other end of the first pipeline is connected with a filter bag dust remover; a dust guide pipe is arranged at the bottom of the filter bag dust remover; an electromagnetic valve is mounted at the joint of the dust guide pipe and a filter bag opening in thebottom of the filter bag dust remover; one end of the dust guide pipe is connected with a dust storage box; the other end of the filter bag dust remover is connected with the bottom of the desulfurization spray tower; wherein the desulfurization spray tower consists of a tower barrel, a wastewater tank and a purified water tank, the wastewater tank and the purified water tank are arranged at the bottom of the tower barrel, the wastewater tank is communicated with the bottom of the tower barrel, an alkaline agent tank is arranged at the upper part of the purified water tank, and a switch valveis arranged at the bottom of the alkaline agent tank. The waste gas treatment device is good in waste gas treatment effect, convenient in ash removal and simple to operate.

Spray tower circulating water tank

Abstract: The utility model discloses a circulating water tank of a spray tower. The device comprises a box body and a circulating water pump, a partition plate and a water permeable grid are arranged in the box body, the partition plate is arranged over the water permeable grid, the lower end of the partition plate is connected with the upper end of the water permeable grid, and the partition plate and thewater permeable grid divide the box body into a backflow cavity and a water pump cavity; a communicating water hole is formed in a side box plate, adjacent to the spray tower body, of the box body inthe backflow cavity, the box body is in fluid communication connection with a lower water tank of the spray tower through the communicating water hole, and a filtering component is arranged in the communicating water hole; and the water inlet end of the circulating water pump is arranged in the water pump cavity and is adjacent to the bottom plate of the box body. According to the utility model,the amount of gas entering the circulating water pump can be reduced, and disturbance of the water inlet end of the circulating water pump to dust or crystals accumulated at the bottom of the spray tower can be reduced, so that solids such as dust are prevented from entering the circulating water pump body to damage the circulating water pump.

Treatment equipment of roasting tail gas containing high-concentration Hcl

Abstract: The invention provides treatment equipment of roasting tail gas containing high-concentration Hcl. The equipment comprises a cyclone separation dust-collector, a front spray tower, a water-washing spray tower, an alkali-washing spray tower and a matched heat exchanger, a high pressure fan, a spray liquid storage tank, a centrifugal pump and a tail gas pipe, wherein the cyclone separation dust-collector, the front spray tower, the spray tower and the high pressure fan are connected by the tail gas pipe; the high pressure fan is installed behind the water-washing spray tower and in front of thealkali-washing spray tower; the alkali-washing spray tower adopts alkali lye for spraying, and the alkali lye includes 100 parts of 5% sodium hydroxide solution, 5 parts of triethanolamine, 0.8 part of potassium fulvic acid and 3 parts of osmanthus vinasse spent liquor. By the tail gas treatment equipment of the invention, the contact area of the spray liquid and tail gas is increased, the absorption effect of acid-containing gas in the tail gas is improved, the concentration of acid in the tail gas exhausted is reduced, and cleaner production is realized.