Industrial abraum salt decomposition treatment device and method

Abstract

The invention provides an industrial abraum salt decomposition treatment device and method. According to the industrial abraum salt decomposition treatment device and method, high-effectively decomposition and removal of chlorobenzenes, chloralkanes, phenols and other organic carbon in organic abraum salt are realized through a first-stage decomposition furnace, a second-stage decomposition furnace and a catalytic conversion furnace, and precursor chloralkanes, phenols and other organic carbon generated from PCDD/Fs high-toxicity organic pollutants are thoroughly and harmlessly decomposed. Theindustrial abraum salt decomposition treatment device and method are free of the low-temperature slag condensation blockage risk and the high-temperature molten salt corrosion and expansion peeling risk of a refractory lining material, and continuous, safe and stable operation can be realized. The investment intensity and operation cost of equipment are low, and no secondary pollution is generated. A catalyst in the catalytic conversion furnace can be cyclically used through thermal regeneration/chemical regeneration, and resource utilization of obtained purified abraum salt can be realized.

Description

Technical field [0001] The invention belongs to the processing field of industrial waste salt and hazardous solid waste, and specifically relates to an industrial waste salt analysis and treatment device and method. Background technique [0002] In recent years, my country’s petrochemical, pharmaceutical, pesticide, and refined production industries have developed rapidly, and the scale of production has increased rapidly. At the same time, the scale of the accompanying waste products has also become larger. Among them, industrial waste salt solutions are the most important toxic and harmful pollution in these industries. Things. This is because when these industries purify and process products, they will be acidified and alkalized to form a large amount of NaCl solution, also known as waste salt solution, and mixed with a wide range of organic compounds, the content of which accounts for 15-20% of the total. Reducing the amount of waste liquid will dry and steam these waste salt...

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Problems solved by technology

According to the "Standards for Hazardous Waste Landfill Pollution Control" (GB18598-2019) and the latest "Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste (Revised in 2019)" and other laws and regulations, from June 1, 2020, enter the flexible safety Hazardous solid waste for landfill disposal in landfill, if the total amount of water-soluble salt exceeds 10% or the content of arsenic exceeds 5%, it must enter the rigid hazardous waste landfill for rigid landfill, which further increases the current industrial The landfill cost of waste salt, and because the rigid landfill has very high requirements for site selection, and other existing industrial waste salt treatment methods such as warm carbonization, high-temperature incineration, plasma melting, and cement kiln co-processing The method, cement / asphalt / resin stabilization and solidification method, etc. have varying degrees of complicated process flow, high requirements on the composition of feed materials, low-temperature molten salt corrosion prone to occur, long-term stable operation of equipment, high processing costs, small processing scale, and industrial The harmless treatment of waste salt is not complete, and there are bottlenecks such as secondary pollution. Therefore, in view of the bottleneck problems existing in the current industrial waste salt hazardous solid waste treatment and disposal technology, it is urgent to develop a simple process, low investment and operating costs and can be used Industrial waste salt high-efficiency conversion device and method for realizing long-term stable operation

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