Coal gas anhydrous dust collecting equipment of revolving furnace and technique thereof

Abstract

The invention relates to a converter coal gas non-water dust removing equipment, which comprises a converter, a radiant type waste-heat boiler, an adjusting valve, a cyclone dust remover, a bag-type dust remover, a coal gas temperature controlling device, a flow meter, a main induced draft fan, a three-way valve, an emission chimney, a rotary water seal, a U-shaped water seal, and a coal gas tank. The invention is characterized in that a convection type waste-heat boiler is connected between the outlet position of the radiant type waste-heat boiler and the adjusting valve, and the convection type waste-heat boiler is composed of a settling chamber, a heat exchange component, a baffle plate, a box body, and an ash discharging opening. A process method comprises the steps that converter coal gas comes into the convection type waste-heat boiler via radiant type waste-heat boiler after recovery waste heat, the gravitational settling is performed to come into the adjusting valve, and the bag-type dust remover, etc to perform dust fining removal after the recovery waste heat, the emission is performed through the three-way valve or the converter coal gas comes into the coal gas tank to perform coal gas recovery, and the invention has the advantage that the energy consumption is reduced through recovering heat energy.

Description

Technical field: [0001] The invention relates to the technical field of steelmaking auxiliary equipment and its technology, in particular to a converter gas anhydrous dedusting equipment and its technology. Background technique: [0002] There are mainly two types of existing converter gas dedusting equipment and its process methods. One is the wet converter gas dedusting recovery system represented by the Japanese OG method. The main process includes the traditional "one article + two articles" system, spray tower +Downward annular venturi system, spray tower+upward annular venturi system, its main structure has experienced adjustable throat type (P-A), movable reversible type (RD), annular seam weight type (RSW) and other replacements, its main equipment consists of Venturi tube, cooling tower, circular seam Venturi tube, dehydrator, water mist separator, flow meter, induced draft fan, three-way valve, water treatment facilities, gas cabinet, water Seal etc. composition. ...

AI Technical Summary

Problems solved by technology

However, the disadvantages of the OG wet-type converter gas dust removal and recovery system are: due to the use of water cooling to cool down, a large amount of heat energy in the gas is lost and the calorific value of the gas is reduced. Under the same conditions, increasing the power of the main induced draft fan increases the Reduce energy consumption and require a huge water supply system and sewage and sludge treatment systems

However, in the currently used dry-process converter gas dedusting process equipment system, the high-temperature gas coming out of the converter vaporization cooling flue is cooled in the evaporative cooling tower by spraying water, which will cause a large amount of heat energy in the gas to be lost and cause The water vapor content in the gas increases, which reduces the calorific value and use value of the gas; under the same conditions, the power of the main induced draft fan is also increased, which increases energy consumption

Images