Showing papers on "Spray tower published in 2002"

Fluidized spray tower

Abstract: A fluidized spray vessel. A vessel design is provided for recovering heat from gaseous heat streams. The vessel utilizes a semi-fluidized bed for obtaining desirable liquid/vapor contact times. A spray section is provided in which liquid is sprayed through nozzles designed to provide a mean droplet size having a terminal velocity of from about sixty percent to about ninety five percent of the superficial upward gas velocity. These spray tower design criteria enhance spray tower performance, and thus enables more efficient heat recovery to be practiced, particularly in systems where relatively low grade heat sources are encountered.

Method for producing hard metal granulate

Abstract: A hard metal granulate is produced by wet milling and spray drying in a spray tower using pure water as the liquid phase. The spray tower is configured and operated in such a way that a ratio of the quantity of water added via the slurry (in liters per hour) to tower volume (in m 3 ) is between 0.5 and 1.8 and in that a maximum of 0.17 kg of slurry is atomized per m 3 of incoming drying gas. The slurry has a solid particle concentration within a range of 65-85% by weight. Under these conditions, the addition of a water-soluble, long-chain polyglycol to the slurry prior to spraying previously required in order to prevent oxidation of the hard metal granulate is no longer necessary.

Saline water spray test apparatus

Abstract: PROBLEM TO BE SOLVED: To provide a saline water spray test apparatus, for minimizing the fluctuation in a test condition due to interruption of the operation, shortening the time for collecting the spray amount, greatly shortening the time for adjusting the spray amount or the time for inspecting the shipping, accurately grasping the variation of the spray amount in a test chamber, controlling the variation of the spray amount, accurately grasping the record of each corrosion factor such as the spray amount to each test piece, shortening the test time for the spray amount at a plurality of stages, and improving the workability, in measuring the spray amount. SOLUTION: A spray collection means is provided, which includes a shaft support engagement means to a spray tower, arms radially extending from the shaft support engagement means with respect to the spray tower as the central axis, and a spray amount collector support means in which spray amount collectors are provided to the arms, respectively. Every one test piece is provided with the spray amount collector adjacent to the test piece. The spray amount collector has a means which can individually collect the spray amount for each test piece with the spray amount collector, and which gives directivity to the distribution of the spray to be sprayed in the test chamber to change the extent of the distribution. COPYRIGHT: (C)2004,JPO

Waste gas treatment method and treatment equipment

Abstract: PROBLEM TO BE SOLVED: To provide a waste gas treatment method and treatment equipment which are capable of efficiently utilizing slightly excessive desuperheating water to be cyclically used. SOLUTION: In the waste gas treatment method of introducing the waste gas containing hazardous components into a waste gas desuperheating column 1 of a water spray system and cooling the same, then introducing the waste gas into dust collector equipment 2 and removing the dust in the waste gas and in succession introducing the gas into a wet process spray tower 3 to remove the hazardous components in the waste gas, the wet process spray tower 3 consists of at least a liquid chemical spray section 3a which removes the acidic components in the waste gas by spraying the liquid chemical and a desuperheating section 3b which recovers and desuperheats the mist in the waste gas by cooling the waste gas past the spray section 3a and cyclically uses the desuperheating water. At least a portion of the desuperheating water produced in this desuperheating section 3a is used for the spray water of the waste gas desuperheating column 1.

Coal smoke dusting and desulfurizing appts.

Abstract: Disclosed is a dust removal and sweetening device, formed by consecutive connection of a whirlwind collector, an exhauster, a crushed granite spray tower and a smoke window via tubes. The crushed granite spray tower has a crushed granite structure, multiple layers of turbo-grid plates are arranged in the tower, and raschin rings are arranged on the turbo-grid plates. The top of the tower is provided with a spraying head, water sealing orifice is opened at the bottom portion of the tower, a liming tank and a precipitating tank are arranged at the lower portion of the water sealing orifice outside the tower, and the water in the precipitating tank is pumped into the spraying head arranged at the top of the tower via pump for circular use. The utility model has the advantages of low investment of arrangement, low running expense, long working life of equipment, quick effects of blowing in of equipment, simple operation and maintenance, and perfect dust removal and sweetening effects.

Method for producing hard metal granulated material

Abstract: The invention relates to a method for producing a hard metal granulated material by carrying out wet milling and spray drying inside a spray tower -1- while using pure water as the liquid phase. According to the invention, the spray tower -1- is configured and operated in such a manner that the ratio of the amount of water, which is supplied over the wet slurry, in liters per hour ranges from 0.5 to 1.8 with regard to the tower volume in m3, and that a maximum of 0.17 kg wet slurry is supplied per m3 drying gas, whereby the wet slurry has a solids content ranging from 65 to 85 wt. %. Under these conditions, the usually necessary addition of a water-soluble, long-chain polyglycol to the wet slurry before spraying in order to prevent the hard metal granulated material from oxidizing is eliminated.

Saltwater spray test method and device

Abstract: PROBLEM TO BE SOLVED: To heighten reliability of a corrosion test by adjusting pH of saripled spray liquid to be neutral, and to accelerate corrosion speed. SOLUTION: Compressed air is brought into contact with an adsorbent represented by molecular sieve carbon and zeolite having high selective adsorbablity of gaseous carbon dioxide relative to gaseous nitrogen or gaseous oxygen, to thereby remove gaseous the carbon dioxide from the compressed air by a pressure swing adsorption system, and part of the air after removing carbon dioxide is brought into contact with an adsorbent represented by molecular sieve carbon and zeolite having high selective adsorbablity of gaseous nitrogen relative to gaseous oxygen, to thereby remove the gaseous nitrogen by the pressure swing adsorption system, and the air after removing carbon dioxide is mixed therewith at an optional ratio, respectively. Then, after adjusting ventilation pressure, the mixed air is passed through an air saturator and discharged from a spray nozzle. Saltwater is sprayed from the spray nozzle as mist into a test chamber from a spray tower and provided into the test chamber, to thereby execute the corrosion test.

Gas cooling and oil recovery apparatus for waste plastics liquefaction plant

Abstract: PROBLEM TO BE SOLVED: To provide a gas cooling apparatus of a wastes plastic liquefaction plant which enables a generated hydrocarbon gas to be condensed and recovered as an oil, prevents both a liquid phase line and a gas phase line from being clogged by a sublimate, and enables the sublimate to be used as a fuel. SOLUTION: This apparatus is equipped with a melting vessel 1 for melting waste plastics containing PVC and PET mixed thereinto; a spray tower 12 for cooling a gas generated in the melting vessel 1 to condense a high-boiling- point fraction to give an oil and for depositing a sublimate from the gas into the oil; and a condenser 13 for cooling the gas having passed through the spray tower 12 to condense a low-boilingpoint fraction to give an oil. The spray tower 12 is equipped with a cooling section 15; a tank section 16; and an oil cooling system 17 for spraying an oil in the tank section 16 through an outer cooler 23 and from a spray 24 installed at the cooling section 15. The low- boiling-point fraction oil condensed in the condenser 13 is recovered as a fuel, and the high-boiling-point fraction oil containing a sublimate and condensed in the spray tower 12 is recovered as a slurried fuel.

Method and conduit system for influencing the drop spectrum of fluidic substances during the atomization thereof

Abstract: not available for EP1259332Abstract of corresponding document: WO0162399The invention relates to a method and corresponding conduit system for influencing the drop spectrum of fluidic substances during the atomization thereof by means of single-substance pressure nozzles, especially of suspensions used in spray drying or in the prilling of melts A conduit system and method should be provided with which, during continuous operation, the width of the spectrum and the average diameter of the drops can be altered without exchanging individual nozzles To these ends, the invention provides that, for example, in a spray tower (25), the drop size can be altered independently of the flow rate by means of at least one of the nozzles (6a, 6b) that are supplied with an aggregate fluid stream (FG) which is delivered by means of pumps (2) and which, independent of the flow rate, is divided into a number of partial streams (T3, T4) in the direction of delivery after the pump (2) For this, the delivery characteristics of a number of partial streams (T3) flowing to at least one nozzle (6a, 6b) with two supply lines are influenced by means of valves and/or pumps (5, 8) in such a way that the total flow rate is adjusted by the pumps (2) integrated in the aggregate fluid stream (FG) Alternatively, during the operational state, the division ratio of the partial streams (T3, T4) is adjusted, and the drop size is separately adjusted for the individual nozzle (6a, 6b)

Ozonization system for disinfection in spray tower cooling systems

Abstract: A periodic ozone treatment system for a showering tower type water cooling system worked once daily for a period of 10∼30 minutes essentially comprises: an ozone dissolving tank (50) to prepare high density ozone solution therein and periodically fed to the cooling system from a top of the showering tower automatically; a bypass piping (44) connected from a heated water recycling pipe after a heat exchanging in a main functional heat exchanger (40) to a sand filter (34) to shift recycling water for washing the sand in the filter by a reverse osmosis operation during the period while the ozone treatment system is working; and an ozone decomposition reactor (38) disposed at a front of heat exchanger (40) free from corrosion.