Tubular pyrolysis method of laboratory waste liquid

Abstract

The invention discloses a tubular cracking method for a laboratory waste liquid. The method comprises the following steps: (1) the waste liquid is vaporized in a residual liquid waste heat recoverer;(2) waste liquid steam formed after the vaporization is subjected to primary cracking in a primary plasma cracking tubular reactor; (3) a cracking gas obtained in step (2) is subjected to secondary cracking in a secondary plasma cracking tubular reactor; and (4) a cracking gas obtained in step (3) sequentially goes through the residual liquid waste heat recoverer, an air waste heat recoverer, a quencher and an alkaline washing tower, and tail gas of the tower is discharged through a chimney. The method makes the residual liquid fully cracked in an environment-friendly manner; and the crackingtemperature is high, and plasma is applied, so no dioxins are generated, and the method is suitable for treating various high-difficulty organic waste liquids with complex components.

Description

technical field [0001] The invention relates to the field of waste liquid treatment, in particular to a tubular cracking method for laboratory waste liquid. Background technique [0002] With the development of social economy and modern industry, the disposal of an increasing number of various wastes has become an environmental protection issue that countries must face. Problems of development and ecological environment. [0003] Among these wastes, the most difficult to deal with are the laboratory waste liquids produced by universities and scientific research institutes. These waste liquids have the characteristics of complex components, many unknown components, and high toxicity. [0004] Traditional physical treatment, chemical treatment, physicochemical treatment, biological treatment, etc. are difficult to deal with, and can only be treated by incineration. [0005] Since the 1960s, Western Europe, Japan and other developed countries have generally used incineration ...

AI Technical Summary

Problems solved by technology

According to the report, from the 1980s to the early 1990s, incinerators have become the main source of dioxin emissions, and it is estimated that they account for 40-80% of the total dioxin emissions from various industries. may be higher

[0006] At the same time, due to the complex composition of laboratory waste liquid and a large number of unknown side reaction products, in addition to the problem of dioxin, there are a series of problems such as the difficulty of completely decomposing the residual liquid during the incineration process.

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