Technology and device for pyrolyzing biogas residues by molten salt and preparing phenol compounds

Abstract

The invention discloses a technology and a device for pyrolyzing biogas residues by molten salt and preparing phenol compounds. The device for pyrolyzing the biogas residues by the molten salt and preparing phenol compounds comprises a biogas residue smashing and feeding device, a pyrolysis reaction device and a product collecting and treating device, wherein the pyrolysis reaction device comprises a pyrolysis reaction kettle, a separation column arranged in the pyrolysis reaction kettle, a stirring device and an electric heating sleeve arranged on the outer side of the pyrolysis reaction kettle, a cavity in the pyrolysis reaction kettle is of a cylindrical structure, and the separation column divides inside of the pyrolysis reaction kettle into ring cylindrical cavity structures; the molten salt is contained in the pyrolysis reaction kettle, a discharge port of the biogas residue smashing and feeding device is connected with a biogas residue feed port in the top of the pyrolysis reaction kettle through a pipeline, and a gas outlet in the top of the pyrolysis reaction kettle is connected with a gas inlet of the product collecting and treating device through a pipeline. A traditional biogas residue fertilizing method is replaced with biogas residue pyrolysis by the molten salt, the molten salt has a catalytic effect on biogas residue pyrolysis, so that resources are sufficientlyutilized, and the pyrolysis yield of the biogas residues is increased.

Description

technical field [0001] The application relates to a process and device for pyrolyzing biogas residue with molten salt and preparing phenolic compounds. Background technique [0002] As a country with relatively developed agricultural resources and animal husbandry resources, my country has more than 700 million tons of agricultural waste such as straws every year. Biogas engineering, as a sustainable green technology, can reutilize these resources and convert them into flammable biogas. It can not only improve the ecological environment of the surrounding residents but also increase economic benefits. [0003] However, solid residues will be formed during anaerobic fermentation, which contain higher microorganisms, lignin, protein content and a large amount of heavy metal elements. Direct application of fertilizers to the field will lead to soil and water pollution and the spread of bacteria, and the high content of lignin and other organic matter cannot be fully recovered a...

AI Technical Summary

Problems solved by technology

Direct application of fertilizers to the field will lead to soil and water pollution and the spread of bacteria, and the high content of lignin and other organic matter cannot be fully recovered and utilized, resulting in a waste of resources

On the other hand, the small scale of agricultural use of biogas residues cannot meet its large-scale processing

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