The invention discloses a novel dry-process cement kiln tail flue gas desulfurization system A material taking device (1) is connected with an outlet of a decomposing furnace (6); the material taking device (1) is connected with a storage device (3); the storage device (3) is connected with a pulping device (2); and the pulping device (2) is respectively connected with a humidifier tower (7) and a raw mill (8) by virtue of a conveying device (4) and an injection device (5) The invention also discloses a desulfurization process for the system With the adoption of the technical scheme, the desulfurization efficiency is high, and the desulfurization efficiency is more than 50 percent; the operation is convenient, and the degree of automation is high; the construction period is short, and normal production of the production line is not influenced by most of constructions of the desulfurization system; and moreover, an extra desulfurizing agent does not need to be purchased, and the investment cost and the operating cost are low

Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof

The invention discloses a two-step oxidation-reduction flue gas denitration method which comprises an ozone oxidation device 1, an ozone generator 9, an ozone adding control system 10, an NO/NOx sensor 8, a reduction reaction tower 2, an absorption liquid recovery pool 3, a reducing agent absorption liquid circulation pool, a reducing agent solution preparation device 6, a reducing agent solution adding device 7 and a circulating pump system 5 Firstly, flue gas to be treated enters the ozone oxidation device; under the action of ozone, part of NO in the flue gas is oxidated into NO2; afterwards, the flue gas is conveyed into the reduction reaction tower to be in contact with reducing agent solution; and under the action of reducing agents, most of NO and NO2 in the flue gas are reduced into N2, so that the purpose of denitration and purification of the flue gas can be achieved Waste water generated after flue gas denitration reaction can be reclaimed and reused The method provided by the invention accomplishes flue gas denitration in two steps, and has the advantages of high ozone utilization ratio, good denitration effect, recyclability of solution, low investment and treatment cost and broad application prospect

Two-step oxidation-reduction flue gas denitration method

The invention discloses a desulfurization system and method for processing the flue gas of a glass melting furnace. The system comprises a flue gas pipe of the glass melting furnace and an absorption tower, wherein the flue gas pipe of the glass melting furnace is connected with a gas inlet of the absorption tower; the absorption tower is a spraying empty tower; two spraying layers and a two-level built-in demister are arranged in the absorption tower; the two spraying layers and the two-level built-in demister are distributed at an interval; the bottom part of the absorption tower is connected with an oxidation fan and a circulation pipeline; the circulation pipeline is provided with a circulation pump and connected with the lower spraying layer; the bottom part of the absorption tower is connected with an evaporation system through an output pipe; and a discharge pump is arranged on the output pipe. The desulfurization method adopts an evaporation system for the desulfurization end product and desulfurization wastewater so that the evaporation system evaporates the Na2SO4 solution of the desulfurization end product into mirabilite, and the mirabilite is recycled as a major raw material of a glass factory. Through the invention, the flue gas of the glass melting furnace can be effectively processed, the desulfurization reaches the standard for discharge, and the operation is stable and normal.

Desulfurization system and method for processing flue gas of glass melting furnace

The invention discloses a flue gas treatment method for simultaneous desulfurization, denitrification and demercuration by a calcium and magnesium method. The method comprises the steps of (1) carrying out dust removal on the flue gas of a boiler, then enabling the flue gas to enter a static mixer, spraying ozone into the static mixer at the same time, and carrying out mixed oxidation on the flue gas of the boiler and the ozone; (2) after mixed oxidation, enabling the mixed gas to enter an absorption tower from the bottom of the absorption tower, spraying the mixed slurry of magnesium oxide and limestone or magnesium oxide and lime in a circulating way in the absorption tower, and feeding a demercuration agent into the absorption tower; (3) finally, discharging the sprayed and absorbed flue gas via a chimney from the top of the absorption tower. After the method is adopted, the denitration performance of the whole technology is maintained to be at a higher level, and high efficiency of desulfurization and demercuration is realized.

Flue gas treatment method for simultaneous desulfurization, denitrification and demercuration by calcium and magnesium method

The invention discloses an oxide pellet spraying device for a gas base vertical furnace. The device comprises a lime bin, a pulp storage pool, a lime pulp nozzle and a roller pulp machine; quicklime in the lime bin is quantitatively fed in a lime digesting machine through an impeller feeder and a spiral decreasing weigher for digestion; the digested quicklime enters a digestion slag removing machine; lime clear liquid on the upper layer of the digesting slag removing machine overflows in the pulp storage pool; lime slag at the bottom is discharged from the slag removing machine through spirals; lime liquid in the pulp storage pool is sprayed to oxide pellets continuously rolling on the roller pulp machine through a pulp spraying pump and the lime pulp nozzle; and the sprayed oxide pellets are fed to the gas base vertical furnace as raw materials. The oxide pellet spraying device for the gas base vertical furnace quantitatively feeds in the lime digesting machine for digestion through the spiral decreasing weigher, can adjust the pulp spraying concentration, can adjust the pulp spraying quantity, is uniform in spraying through the lime pulp nozzle, is not easy to block pipes, and is low in environmental pollution.

Oxide pellet spraying device for gas base vertical furnace

The utility model discloses a vertical separating-net sedimentation-type deslagging lime slaker system comprising a lime slaker and a deslagging sedimention tank The lime slaker comprises a slaker main barrel which is internally provided with a stirring device, the middle of the main barrel is provided with a separating net which separates the slaker into an upper part and a lower part, the stirring device passes through the upper part and the lower part and are respectively provided with stirring vanes in the upper part and the lower part, and a primary slaking tank and the deslagging sedimention tank are communicated by a filtration pore with a filter screen; the bottom of the slaker main barrel is provided with a cone which is communicated with a secondary slaking tank and the deslagging sedimention tank; the deslagging sedimention tank is internally provided with a shaft-free screw machine; the middle of the deslagging sedimention tank is provided with a slurry outlet; and the tail part of the shaft-free screw machine is provided with a deslagging port The deslagging lime slaker system combines the slaker and a deslagging machine to realize integration of slaking and deslagging, has reasonable structural device, convenient operation, high production efficiency, large production capability and small labor intensity

Vertical separating-net sedimentation-type deslagging lime slaker system

The utility model discloses a double-curve atomization high-efficiency spray tower, which comprises a spray tower body, wherein the spray tower body is provided with a flue gas inlet and a chimney; a plurality of spray layers are arranged in the spray tower; and a double-curve guide plate is arranged below the lowermost spay layer in the spray tower and at a flue gas inlet position Due to the adoption of a double-curve secondary impact technology in the spray tower, the contact time of the flue gas and serous fluid is prolonged, and the desulfurization efficiency is improved

Double-curve atomization high-efficiency spray tower

The utility model discloses a purification tower for treating high-concentration flue gas. The purification tower comprises a flue gas inlet 12, a flue gas distribution chamber 11, a flushing purification unit 10, a gas collection chamber 6, a rotational flow purification channel 5, a diffusion chamber 4, a spraying layer 3, a centrifugal demister 2, a chimney 1, a stirrer 9, a circulating water outlet 8 and an alkaline liquid chamber 13. The purification tower for treating the high-concentration flue gas can effectively purify the high-concentration flue gas by adopting working processes such as flushing purification, rotational flow purification, spraying purification and centrifugal demisting, so that a discharging standard can be achieved and the running is stead and normal.

Purification tower for treating high-concentration flue gas

The utility model discloses a composite stainless steel desulfurizing tower for sintering machine smoke gas government, which comprises a desulfurizing tower body, wherein the top of the desulfurizing tower is connected with a smoke discharge pipeline, the desulfurizing tower body consists of a plurality of different-temperature-section tower bodies, the upper part of the tower body is an upper low-temperature section, the lower side of the upper low-temperature section is connected with a medium-temperature section, the lower side of the medium-temperature section is connected with a high-temperature section, the lower side of the high-temperature section is connected with a lower low-temperature section, and the tower bodies of the upper low-temperature section, the medium-temperature section, the high-temperature section and the lower low-temperature section from top to bottom are all tower bodies made of stainless steel. The composite stainless steel desulfurizing tower adopts stainless steel composite plates as tower body materials, the whole desulfurizing tower does not need anti-corrosion treatment, high-temperature resistance is realized, and the service life is long.

Yanyan Sun

Papers

Desulfurization system and method for processing flue gas of glass melting furnace

Vertical separating-net sedimentation-type deslagging lime slaker system

Double-curve atomization high-efficiency spray tower

Purification tower for treating high-concentration flue gas

Composite stainless steel desulfurizing tower for sintering machine smoke gas government