Gasification incineration boiler for high-nitrogen organic waste liquid containing heavy metal, metal salt and phosphorus

Abstract

The invention provides a gasification incineration boiler for high-nitrogen organic waste liquid containing heavy metal, metal salt and phosphorus. The boiler comprises a U-shaped gasification incineration boiler and a cooling chamber with a built-in L-shaped hanging screen heating surface, the U-shaped gasification incineration boiler and the cooling chamber with the built-in L-shaped hanging screen heating surface are in an inverted U shape, and the U-shaped gasification incineration boiler is connected with the top of the cooling chamber with the built-in L-shaped hanging screen heating surface through a connecting flue. The gasification incineration boiler for the high-nitrogen organic waste liquid containing the heavy metal, the metal salt and the phosphorus is scientific and reasonable in structure, the high-nitrogen organic waste liquid containing the heavy metal, the metal salt and the phosphorus is subjected to pyrolysis gasification on one side of the U-shaped incineration boiler, pyrolysis gasification gas is subjected to low-nitrogen combustion of high-temperature incineration on the other side of the U-shaped incineration boiler, according to the mode, generation of a large amount of fuel type nitric oxide caused by direct combustion is avoided, equipment investment and operation cost are greatly reduced for post-stage environment-friendly denitration treatment of flue gas, and a whole system is more economical.

Description

technical field [0001] The invention relates to waste liquid recycling and environmental protection treatment technology, in particular to a gasification and incineration boiler for organic waste liquid containing heavy metals, metal salts and phosphorus and high nitrogen. Background technique [0002] When treating heavy metals, metal salts and phosphorus-containing high-nitrogen organic waste liquids, if they are directly burned at high temperature, the organic nitrogen in the waste liquids will be directly converted into NOx, and the fuel-type nitrogen oxides will generate a huge amount. Gas emission standards. At the same time, the current chemical waste liquid containing organic phosphorus and high nitrogen is difficult to meet the emission standards in the direct high-temperature incineration treatment of flue gas, and the cost of post-stage denitrification is extremely high. % or more, the formation of a large amount of nitrogen oxides requires a large amount of deni...

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Problems solved by technology

[0006] The purpose of the present invention is to propose an organic waste liquid gas containing heavy metals, metal salts, and high nitrogen containing phosphorus in view of the problems that the flue gas emission is difficult to meet the standard and the cost of denitrification is extremely high in the treatment of chemical waste liquid containing organic phosphorus and high nitrogen. Chemical incineration boiler, the structure of the incineration boiler is scientific and reasonable, avoiding direct combustion to produce a large amount of nitrogen oxides, greatly reducing equipment investment and operating costs for post-stage environmental protection denitrification treatment of flue gas, making the whole system more economical

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