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Device and method for processing chloro-containing organic industrial waste

A technology for chlorinated organic matter and industrial waste, applied in the direction of combustion methods, lighting and heating equipment, combustion types, etc., can solve the problems of incomplete degradation, secondary pollution, high equipment requirements, etc., achieve high destruction and removal rates, and equipment can be used Mobile, easy-to-handle effects

Active Publication Date: 2013-08-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Incineration technology has the advantages of high treatment efficiency and large treatment capacity, but it has high energy consumption, high requirements for equipment, relatively large investment, and there is a potential risk of secondary pollution
Solidification stabilization technology can reduce the mobility or toxicity of chlorinated organic compounds, but the degradation efficiency is low and the degradation is not complete

Method used

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  • Device and method for processing chloro-containing organic industrial waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A treatment method for a treatment device containing chlorinated organic industrial waste, comprising the following steps:

[0030] 1) After crushing the hexachlorobenzene-contaminated soil, feed it into the thermal desorption furnace 1 through the feed system 3;

[0031] 2) Through the temperature control system, the molten salt reaction furnace 2 is heated to melt the molten salt;

[0032] 3) Open the intake system 4, heat the thermal desorption furnace 1, desorb the organic chlorine in the hexachlorobenzene-contaminated soil and enter the molten salt reaction furnace 2 for reaction, and control the introduction rate of thermal desorption gas to 0.2L / min;

[0033] 4) The tail gas produced by the molten salt reactor 2 is discharged after being absorbed by sodium hydroxide solution with a mass concentration of 5% and methylene chloride;

[0034] 5) After the reaction, the material in the thermal desorption furnace 1 is emptied, and the next batch of material is added; ...

Embodiment 2

[0037] A treatment method for a treatment device containing chlorinated organic industrial waste, comprising the following steps:

[0038] 1) Crush the DDT-contaminated soil and feed it into the thermal desorption furnace 1 through the feed system 3;

[0039] 2) Through the temperature control system, the molten salt reaction furnace 2 is heated to melt the molten salt;

[0040] 3) Open the intake system 4, heat the thermal desorption furnace 1, desorb the organic chlorine in the DDT-contaminated soil and enter the molten salt reaction furnace 2 for reaction, and control the introduction rate of thermal desorption gas to 0.5L / min;

[0041] 4) The exhaust gas produced by molten salt reactor 2 is discharged after being absorbed by sodium hydroxide solution with a mass concentration of 10% and n-hexane;

[0042] 5) After the reaction, the material in the thermal desorption furnace 1 is emptied, and the next batch of material is added;

[0043] 6) After more than two batches of ...

Embodiment 3

[0045] A treatment method for a treatment device containing chlorinated organic industrial waste, comprising the following steps:

[0046] 1) After crushing the aldrin-contaminated soil, feed it into the thermal desorption furnace 1 through the feeding system 3;

[0047] 2) Through the temperature control system, the molten salt reaction furnace 2 is heated to melt the molten salt;

[0048] 3) Turn on the intake system 4, heat the thermal desorption furnace 1, desorb the organic chlorine in the aldrin-contaminated soil and enter the molten salt reaction furnace 2 for reaction, and control the introduction rate of thermal desorption gas to 0.3L / min;

[0049] 4) The tail gas produced by molten salt reactor 2 is discharged after being absorbed by potassium hydroxide solution with a mass concentration of 6% and methylene chloride;

[0050] 5) After the reaction, the material in the thermal desorption furnace 1 is emptied, and the next batch of material is added;

[0051] 6) Afte...

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Abstract

The invention discloses a device and a method for processing chloro-containing organic industrial waste. The device comprises a thermal desorption furnace, chloro-containing organic industrial waste and an air inlet system are connected with a fused salt reacting furnace through the thermal desorption furnace, tail gas outputs of the fused salt reacting furnace are discharged after being absorbed by an alkali liquid and an organic solution sequentially, fused salt residues of the fused salt reacting furnace are connected with a chlorine element recovery system, and the thermal desorption furnace, the fused salt reacting furnace and a temperature control system are connected. The method comprises the steps of feeding the crushed chloro-containing organic industrial waste into the thermal desorption furnace through a charging system, heating the fused salt reacting furnace to fuse fused salts, heating the thermal desorption furnace to enable organic chloride in the chloro-containing organic industrial waste to be subjected to desorption and fed into the fused salt reacting furnace for reaction, discharging produced tail gases after subjecting tail gases to alkali liquid absorption and organic solution absorption sequentially, draining fused salt residues in the fused salt reacting furnace, and recovering through the chlorine element recovery system. The device and the method have the advantages of being quick in reaction, high in target pollutant elimination and removal rate and the like.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a treatment device and a treatment method for chlorinated organic industrial waste. Background technique [0002] Toxic chlorinated organic compounds have the characteristics of carcinogenicity, teratogenicity and mutagenicity, and are highly toxic, bioaccumulative, semi-volatile and refractory, posing serious hazards to human health and the ecological environment. In order to control its hazards, the international community has concluded a number of conventions and formulated corresponding control plans, such as the "Basel Convention on the Control of Transboundary Movement of Hazardous Wastes and Their Disposal", "Stockholm Convention on Persistent Organic Pollutants (POPs)" , "Persistent Toxic Chemical Pollutants (PTS) List", etc. my country's industrial wastes containing toxic chlorinated organic substances mainly include: organic chlorine pesticide waste le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/00
Inventor 李金惠赵向阳姚志通李颖刘丽丽
Owner TSINGHUA UNIV
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