Hot air circulation type indirect thermal desorption soil remediation system and method thereof

A technology of hot air circulation and soil remediation, applied in the field of soil remediation in contaminated sites, can solve problems such as low heat transfer efficiency, restriction of indirect heat desorption, and poor fluidity of solid soil
CN112658023AActive Publication Date: 2021-04-16CSSC NANJING LUZHOU ENVIRONMENT PROTECTION CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CSSC NANJING LUZHOU ENVIRONMENT PROTECTION CO LTD
Publication Date
2021-04-16

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Abstract

The invention discloses a hot air circulation type indirect thermal desorption soil remediation system and method thereof, and belongs to the technical field of soil remediation. The system comprises a thermal desorption reactor, a dust remover, a hot air circulating fan, a hot air heater, an air preheater, a combustion fan, a combustion device and the like. Thermal desorption gas generated by soil heating volatilization is used as a heat transfer medium, contact type efficient heat transfer between hot air and soil is achieved in a cyclic heating mode, meanwhile, high-temperature flue gas is kept not to make direct contact with soil, and the advantages of being high in treatment capacity, small in equipment scale and the like are achieved.
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Description

technical field

[0001] The invention belongs to the technical field of soil remediation of polluted sites, is applicable to the remediation of organic polluted site soil, and specifically relates to a hot air circulation type indirect thermal desorption soil remediation system and a method thereof. Background technique

[0002] Soil refers to the loose surface layer on the land surface that is fertile and capable of growing plants. When too many harmful substances discharged into the soil exceed the self-purification capacity of the soil, the composition, structure and function of the soil will change, and microbial activities will be inhibited. Harmful substances or Its decomposition products gradually accumulate in the soil through "soil → plant → human body", or are indirectly absorbed by the human body through "soil → water → human body", reaching the level of endangering human health, and soil pollution occurs.

[0003] At present, the heavily polluted sites mainly incl...

Claims

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