Base-catalyzed decomposition device and method for industrial waste containing chlorinated organic compound

Abstract

The invention relates to a base-catalyzed decomposition device and method for industrial waste containing a chlorinated organic compound. A reaction system of the device is communicated with chlorinated organic polluting waste via a reaction reagent mixing device, communicated with a nitrogen gas protection system, connected with a temperature control system, communicated with a residue processing device via a deposition and centrifugal separator, and communicated with a secondary activated carbon absorption tower via a condensing reflux device, tail gas from the secondary activated carbon absorption tower is released into the atmosphere, and the deposition and centrifugal separator is communicated with the pipeline of the reaction reagent mixing device; and the decomposition method comprises the following steps of: firstly, adding the chlorinated organic pollutant, the hydrogen donors from the reaction reagent mixing device and the like into the reaction system; secondly, starting the nitrogen gas protection system; and finally, heating and stirring to realize base-catalyzed dechlorination decomposition of the pollutant. The decomposition method has the advantages of high reaction rate, low reaction temperature, small temperature fluctuation of the reaction system, large actual reaction quantity of the pollutant and small risk of secondary pollution.

Description

technical field [0001] The invention relates to an industrial waste treatment process, in particular to an alkali catalytic decomposition device and method for industrial waste containing chlorinated organic matter. Background technique [0002] In recent years, the harm of persistent organic pollutants (POPs, Persistent Organic Pollutions) to the human body and the environment has become the environmental focus of countries all over the world. POPs are generally toxic, including carcinogenicity, reproductive toxicity, neurotoxicity, and endocrine disrupting properties. What's more serious is that on the one hand, POPs have strong lipophilicity and hydrophobicity, and can bioaccumulate in the fat tissue of biological organs, and gradually enlarge along the food chain, so that POPs that exist in low concentrations in the atmosphere, water, and soil Pollutants are magnified through the food chain and cause serious negative effects on the health of humans at the highest trophi...

AI Technical Summary

Problems solved by technology

Based on the existing chlorinated organic pollutant alkali catalysis technology, there are mainly the following problems: (1) The reaction system is a substance with high viscosity and high solid content, and it is difficult to achieve uniform mixing of the reactants with ordinary stirring, which reduces the reaction rate. (2) the reaction temperature is higher, the volatilization of the substance in the system is serious, and the temperature fluctuation of the system is large; (3) after the tail gas is condensed, the condensate is not refluxed, which causes the actual reaction amount of chlorinated organic pollutants to decrease; (4 ) There is a large amount of waste oil and residue in the reacted material, which has not been comprehensively utilized and treated, and there is a potential environmental risk

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