A screw type indirect thermal desorption device for remediation of organic polluted soil

A technology for organic pollution and soil remediation, applied in the restoration of polluted soil, etc., can solve the problems of difficult monitoring and control of working conditions, uneven heating, poor thermal desorption, etc., so as to reduce the amount of exhaust gas and improve the treatment effect. , the effect of uniform heating

Active Publication Date: 2021-02-09
ZHEJIANG UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a screw-type indirect thermal desorption device for remediation of organic polluted soil, and to solve the problem of uneven heating during the thermal desorption process of the indirect thermal desorption device, and thermal desorption Poor adhesion, high energy consumption, and difficult to monitor and control working conditions

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  • A screw type indirect thermal desorption device for remediation of organic polluted soil
  • A screw type indirect thermal desorption device for remediation of organic polluted soil
  • A screw type indirect thermal desorption device for remediation of organic polluted soil

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Embodiment Construction

[0028] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, a screw-type indirect thermal desorption device for remediation of organic polluted soil includes an indirect thermal desorber, and the indirect thermal desorber includes an outer cylinder 1 and a screw 2 arranged in a horizontal direction; the front end of the outer cylinder 1 The upper part is fixedly connected with a scraper feeder 21, and the lower part of the rear end of the outer cylinder 1 is fixedly connected with the discharge cylinder 14; the upper part of the outer cylinder 1 is provided with three branch pipes 7 for collecting exhaust gas; each of the branch pipes 7 has a gas sampling port 11 and a valve 19 for controlling the opening and closing of the pipeline; the three branch pipelines 7 are collected in the centralized pipeline 15, and there is a gas sampling port 12 on the central...

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Abstract

The invention relates to a screw-type indirect thermal desorption device for remediation of organic polluted soil, which comprises an outer cylinder and a screw which are arranged in a horizontal direction; The upper part of the outer cylinder is provided with three branch pipes for collecting exhaust gas; the three branch pipes are collected in a centralized pipe, and there is a gas sampling port on the centralized pipe. The screw is fixed and supported in the outer cylinder; the screw has a cavity for heating the soil, the rear end of the cavity is used to introduce hot air, and the front end of the cavity is used to discharge hot air; the flow of hot air in the cavity The direction is opposite to the direction of soil movement. In the device provided by the invention, there are a plurality of temperature detection devices and gas collection devices, and a centralized control system controls the collected data, and at the same time, the hot air in the thermal desorption process can be recycled, so that the organic polluted soil remediation process is more energy-saving and environmentally friendly , visualization.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a screw-type indirect thermal desorption device for remediation of organic polluted soil. Background technique [0002] Due to the acceleration of industrialization and the shortage of land resources, the number of soil pollution sites is increasing, the scope of pollution is gradually expanding, and the types of soil pollutants are increasing. The problem of soil pollution has received more and more attention, and the problem of soil pollution needs to be solved urgently. [0003] The current soil remediation technologies mainly include physical remediation, chemical remediation, biological remediation, etc. Different technologies are suitable for different contaminated sites. Among many remediation technologies, thermal desorption is currently one of the most mature and widely used remediation technologies. [0004] Thermal desorption can be used for the remediation of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/06
CPCB09C1/06
Inventor 王博吴昂键李晓东陈彤严建华岑可法
Owner ZHEJIANG UNIV
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