A low-temperature dry distillation process for viscous organic residues

Abstract

The invention relates to a low-temperature dry distillation process for viscous organic residues, which belongs to the technical field of harmless treatment of hazardous wastes. The externally heated rotary low-temperature pyrolysis reactor with the function of returning materials performs low-temperature pyrolysis at high temperature, and converts the viscous organic residue into pyrolysis gas and organic carbon residue with a certain calorific value through low-temperature pyrolysis. The pyrolysis gas passes through After dust removal, it enters the desulfurization system for desulfurization. After desulfurization, the pyrolysis gas is pressurized by the fan and sent as fuel to the combustion chamber of the external heating rotary low-temperature pyrolysis reactor to burn and provide heat for the low-temperature pyrolysis of viscous organic residues. After melting and cooling, it is transformed into biochar that can improve soil; the invention is widely used in the harmless treatment of hazardous wastes such as oily sludge and soil contaminated by pesticides.

Description

technical field [0001] The invention relates to a low-temperature dry distillation process for viscous organic residues, belonging to the technical field of harmless treatment of hazardous waste. Background technique [0002] A certain amount of DMF rectification residue, which is extremely harmful to the environment, is a viscous organic residue produced in the production process of synthetic leather in my country. This toxic and harmful viscous organic residue is listed as HW06 hazardous waste by the country. The state stipulates that hazardous waste such as viscous organic residues must be treated in a harmless manner so as not to cause secondary pollution to the environment. [0003] At present, there is no mature technology and process for the harmless treatment of viscous organic residues in China. There are two main treatment methods now, one is to use its high temperature for co-processing in the cement industry and cement clinker calcination process; the other is t...

AI Technical Summary

Problems solved by technology

The process of using low-temperature pyrolysis technology needs to dry the viscous organic residue and mix it with biological activated carbon. The process is long, the production equipment is large, and the consumption of biological activated carbon is large.

At the same time, the viscous organic residue externally heated rotary low-temperature pyrolysis reactor has no material return function, and the reactor has low thermal efficiency, small production capacity, and high processing costs.

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