Method 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 treating solid waste for adsorbing VOCs waste gas. The method is characterized by comprising the steps of sorting pelleting, heat storage primary boiling combustion and heat storage secondary combustion sedimentation purifying. The aims of effectively utilizing the remaining heat value of the solid waste for adsorbing the VOCs waste gas, reducing pollutant emissions and saving energy are achieved.

Description

technical field [0001] The invention relates to the technical field of volatile organic compound waste gas treatment, in particular to a treatment method for adsorbing 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 treatment technology include combustion method, chemical oxidation method, chemical ab...

AI Technical Summary

Problems solved by technology

[0003] Existing technology example 1 uses the biological method and carbonization method to decompose (pyrolyze) solid waste. The biological method is more difficult to treat volatile organic compounds. For example, benzene series have a toxic and harmful effect on microorganisms. Under the condition of high temperature and no oxygen, organic matter is pyrolyzed. One of the technical difficulties of this method is the treatment of tail gas. The prior art example only mentions that the tail gas enters the gas purifier for treatment after heat exchange. The technology of the gas purifier The feature mentions packing and water spray absorption, that is, the problem of adsorption recovery. This method is not suitable for the treatment of adsorbed VOCs waste gas solid waste. The reasons are: first, most of the volatile organic compounds are insoluble in water and difficult to dissolve in Water, the second is that the filler that has adsorbed volatile organic compounds becomes solid waste, and it faces the problem of how to deal with it; the second example of the prior art proposes that the solid waste is dried, pyrolyzed and burned in a multi-bed furnace, and the flue gas pollution After washing and gas-liquid separation, the insoluble and unburned organic and combustible waste gas is introduced into the RTO regenerative combustion furnace for full combustion and then discharged

If the multi-bed furnace designed in Example 2 of the prior art is used to treat the solid waste of adsorbed VOCs exhaust gas, there are the following technical problems: First, the temperature of the multi-bed furnace is not high (450-650°C), and the solid waste is in contact with oxygen in the furnace Insufficient, partially incompletely combusted volatile organic compounds are sent to the regenerative combustion furnace for combustion with the tail gas after washing and gas-liquid separation, then the combustible components in the tail gas such as volatile organic compounds, CO, H 2 A lower proportion of the ratio will inevitably lead to a reduction in the heat load of the regenerative combustion furnace, and the result will inevitably be that the temperature in the furnace will continue to drop and the combustion will stop

Second, the temperature of the multi-bed furnace is not high (450-650°C), if the characteristic pollutants contain Cl - Such as the basic components of synthetic dioxins, it will form a heavy dioxin pollutant that is difficult to dispose of and harmful to environmental pollution.