Special slag cooler for heat storage secondary combustion purification plants for treating and adsorbing VOCs (volatile organic compounds) waste gas and solid waste

Abstract

The invention relates to the field of technologies for treating volatile organic compound waste gas, in particular to a special slag cooler for heat storage secondary combustion purification devices for treating and adsorbing VOCs (volatile organic compounds) waste gas and solid waste. The special slag cooler is characterized by comprising an ash blowing machine, a jacket type air-cool spiral conveyor, an air shutdown valve and a drum type slag cooling assembly. According to the technical scheme of secondary slag ash cooling, the special slag cooler has the advantages that stable and gentle temperature gradient descent of slag ash can be guaranteed by primary air cooling of the jacket type air-cool spiral conveyor and secondary water cooling of the drum type slag cooling assembly, and accordingly the problems of great local temperature variation of spiral blades in existing jacket type air-cool spiral conveyors during irregular interval slag discharge and locking of the spiral blades and the inner wall of air-cool jackets after the spiral blades are thermally expanded can assuredly solved; designed spiral slag breaking hinges can roll in circumferential surfaces of rotary drums along with rotation of the rotary drums, accordingly, slag on the inner walls of the rotary drums can be cleaned in cycles, and reduction of heat conductivity coefficients of the rotary drums and local high-temperature deformation of the rotary drums can be prevented.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment of volatile organic compounds, in particular to a special cooling slag machine for a thermal storage secondary combustion purification device for treating adsorbed VOCs waste gas solid waste. 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 waste gas...

AI Technical Summary

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

Images