Showing papers on "Spray tower published in 2004"

Process for the manufacture of powderous preparations of fat-soluble substances

Abstract: In a process for the manufacture of beadlet preparations of fat-soluble substances in a water-soluble or water-dispersible non-gelling matrix, an aqueous emulsion of the fat-soluble substance(s) and the matrix component are fed through a spray nozzle in the upper section of a vertical spray tower. Through separate inlets powderous starch and a stream of hot air are also fed in the upper section of the vertical spray tower. A stream of cold air is fed in the lower section of the spray tower so as to form a fluidised bed of starch-covered beadlets comprising the matrix component as well as the fat-soluble substances. The beadlets are collected from the fluidised bed and are discharged to a dryer.

Process and spray tower for contactacting gases and liquid droplets during mass and/or heat transfer

Abstract: A tower (3) has at least two gas duct (12) inlets (2) at an angle calculated to provide a gas distribution pattern as the liquid droplets descend from spray jets at a higher level to ensure a long contact duration between the gas and liquid.

Production of spray-dried materials, e.g. polyethylene glycol or alkoxylated fatty alcohol, involves cooling the melt in a spray tower with a counter-current of gas which is recirculated directly via a heat exchanger

Abstract: A method for the production of spray-dried material in a spray tower, in which the melt fed into the tower is cooled with a counter-current of gas and then discharged from the tower while the gas stream is taken off and transferred directly to a heat exchanger to lower or raise the temperature of the gas.

Method of liquid column spray tower desulfurization with salt cement

Abstract: The method of using salt cement in desulfurizing in liquid column spraying tower includes the following steps: leading fume into liquid column spraying desulfurizing tower while feeding the mixed slurry of salt cement and circulating slurry into the liquid column spraying desulfurizing tower for mixing to desulfurizing; and exhausting the desulfurized fume while circulating partial slurry and exhausting the other. The mixed slurry in the desulfurizing tower has pH 5-9, and the liquid/gas ratio inside the tower is 1-3 vol%. Compared with available technology, the present invention has the advantages of low investment in desulfurizing apparatus, low desulfurizing cost, expanded application range of salt cement, etc.

Cyclonic spray combined high-efficient dust separator

Abstract: A cyclone spray combination highly effective ash separator forms an integral body through a cyclone dust collector and a water dust scrubber, wherein the cyclone dust collector forms an integral body through a straight tube section (12) and a cone section (4), and the cyclone dust collector further comprises a smoke gas air inlet (3) arranged on the straight tube section and a discharging valve (5) arranged on the lower end of the cone section (4). The water dust scrubber comprises a spray tower body (2) connected with the upper end of the straight tube section of the cyclone dust collector, and the spray tower body is provided inside with a multi-stage water film ring (10), a spray ring (9), a spray pore plate (8), a water inlet pipe (1), a gas water separating body (7), a smoke gas outlet (3) and a dust-water outlet (11). Compared with the prior art, the cyclone spray combination highly effective ash separator of the utility model achieves compact structure, connectionless pipelines, small accommodation area, less consumptive material, low cost and convenient installment.

Method and apparatus for treating waste gas containing acid and/or base

Abstract: A method for treating waste gas containing acid and/or base, employing fine spray-scrubbing technology for treating the waste gas mentioned above, wherein the scrubbing solution is atomized to generate mists with droplet size of 1 to 100 μm. Another feature of the present invention is to combine the application of surfactant in wet scrubbing technology for treating waste gas containing acids, bases, or both, especially, in a low concentration. Another feature of the present invention is to combine spray tower and/or packed tower and/or other scrubbers vertically/horizontally to get enhanced performance of the conventional control systems.

Design and analysis of the spray tower proper for flue gas desulphurization

Abstract: Theoritical analysis of influence factors upon dimensions of the spray tower proper for wet flue gas desulphuriz ation has been carried out. Combined with existing experience in project design, concrete steps for determining dimensions of the spray tower proper are given, and main factors needing to be considered in design being discussed.

Dynamic Modeling and Simulation of Saturators for Humid Air Turbine Cycle

Abstract: This paper describes the dynamic modeling and simulation of spray tower saturator using one-dimensional flow control volume method, as a part of study for dynamic modeling of the humid air turbine cycle. The mass, energy and momentum exchanges between gas flow and water flow, as well as their conservations, are taken into consideration. Separate modules are built for gas flow and water flow, and are put into an application library of EASY5, which is general-purpose simulation software. Modular structure and mathematical causality needed by explicit modeling are maintained for the modules in the application library. Then spray tower saturators can be divided into arbitrary number of segments, and each one is modeled by a gas flow module and a water flow module. To exemplify the modeling method, two dynamic models with different number of segments are built for a spray tower saturator. For steady state analysis, quantity variations with tower height at design point are illustrated, and the results of the two models are compared. For dynamic analysis, two dynamic simulations are run to obtain response to 10% step increase of the gas and water inlet temperature respectively. Estimation of the dominant time constants by linearized model is also discussed.Copyright © 2004 by ASME

Novel washing and desulfurizing technique with internally-arranged spray tower in chimney

Abstract: The present invention includes chimney, spraying absorption tower, absorbant supplying tank and waste liquid collecting pond, and features that the spraying absorption tower is set inside the chimney and fixed via the bolts embedded into the inner wall of the chimney, and the absorbant supplying tank and the waste liquid collecting pond are outside the chimney. The present invention has saving in field and low cost. In addition, the reaction product from dusting is slurry rather than solid, and this results in small dust amount, no need of other dusting apparatus and low cost in desulfurizing apparatus and operation.