Method for using slag cooler special for heat storage secondary combustion purifying device for treating solid waste for adsorbing VOCs waste gas

Abstract

The invention relates to the technical field of volatile organic compound waste gas treatment, in particular to a method for using a slag cooler special for a heat storage secondary combustion purifying device for treating solid waste for adsorbing VOCs waste gas. The method is characterized in that the slag ash slagging temperature ranges from 850 DEG C to 950 DEG C, and therefore a two-stage cooling technical scheme including jacket type air cooling spiral conveyor first-stage air cooling and roller slag cooling assembly second-stage water cooling is adopted, and it is guaranteed that gradient descent of the slag ash temperature is stable and gentle; therefore, it is guaranteed that when slagging is carried at indefinite time intervals, spiral blades in a jacket type air cooling spiral conveyor have no the problems that local temperature changes are large, and the spiral blades and the inner wall of an air cooling jacket are locked after thermal expansion; and a spiral slag crushing ream is designed to roll on the circumferential face of a rotary roller along with rotation of the rotary roller, scale on the inner wall of the rotary roller is swept in cycles, and the rotary roller is prevented from heat conducting coefficient reducing and local high temperature deformation.

Description

technical field [0001] The invention relates to the technical field of volatile organic compound waste gas treatment, in particular to a method for using a special cooling slag machine for treating adsorption VOCs waste gas solid waste heat storage secondary combustion purification device. Background technique [0002] Gaseous pollutants emitted by industry are the main source of atmospheric environmental pollutants, among which volatile organic compound waste gas (VOCs) is a gaseous pollutant that is seriously harmful to the environment, and it is also an occupational hazard that affects the health of operators in the workplace It is widely derived from chemical industries such as paints, coatings, coatings, lubricants, and rubber. Due to its huge destructive effect on the human body and the natural environment, the country has issued relevant laws and regulations to strictly control its governance and emissions. At present, the commonly used treatment methods of organic w...

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Problems solved by technology

[0003] The cooling drum assembly in Example 1 of the prior art is connected to the slag feeding box and is rotatable relative to the slag feeding box. We all know that the slag ash has no external force such as wind blowing, mechanical scraping, etc., and only relies on the effect of gravity, the slag ash will adhere to the pipe wall, coupled with intermittent slag discharge and small nozzle, it is easy to cause the pipe wall to be damaged. A kind of fluidized bed waste incinerator slagging system of the prior art example 2 helps the slag to cool and returns to the furnace for burning again to improve the combustion efficiency and reduce the thermal ignition loss rate of the slag, but after cooling After the slag ash returns to the furnace, the temperature of the furnace will be reduced, and the calorific value of the garbage is low, and the calorific value of the slag ash after combustion is even lower. If the heat load of the furnace is reduced, there may be a flameout situation and an additional combustion device for furnace insulation More fuel is consumed; the pushing mechanism of the water-cooled slag extractor of the third waste incinerator in the prior art realizes the purpose of slag ash transportation and cooling with the help of the hydraulic cylinder, which is also very helpful for the interval slag discharge of the combustion chamber , there are three deficiencies, one is that the advance and retreat of the main push rod of the pushing mechanism and the main push plate at the front end are operated irregularly due to the slag discharge at intervals. The local temperature is too high and the chilling causes bulging; secondly, considering the expansion factor of the main push plate, the matching gap between the main push plate and the arc-shaped groove must be designed to be large to avoid the phenomenon of locking. If the gap between the two is too large, it will increase the The air leakage coefficient and the risk of pollutant leakage are increased; the third is that the angle between the main push rod and the small scraper is 0-15 degrees, that is to say, the angle between the thrust direction and the arc-shaped groove is 0-15 degrees, and the arc-shaped The groove or the main push plate is likely to fail to work after being deformed by high temperature, and needs frequent maintenance. This is why the inventor does not adopt the circular sleeve technical solution with more reliable sealing and larger heat exchange area, but adopts an arc-shaped sleeve with an inspection cover on the top. Groove Technology Program Reasons

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