A thermal desorption remediation device for pops pesticide-contaminated soil

A technology for thermal desorption of polluted soil, applied in the field of thermal desorption repair devices, can solve the problems of large investment in equipment, incomplete treatment of pollutants, high treatment costs, etc., achieve uniform heating, reasonable structural design, and improved thermal desorption Effect

Active Publication Date: 2022-03-29
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
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Problems solved by technology

[0004] Thermal desorption technology is a mature and reliable technology for treating POPs pesticide-contaminated soil, but thermal desorption devices in the prior art generally have the problems of large equipment investment, high treatment cost and incomplete treatment of pollutants

Method used

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  • A thermal desorption remediation device for pops pesticide-contaminated soil
  • A thermal desorption remediation device for pops pesticide-contaminated soil
  • A thermal desorption remediation device for pops pesticide-contaminated soil

Examples

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Embodiment Construction

[0030] Example: such as figure 1 , 2 A thermal desorption remediation device for POPs pesticide-contaminated soil shown in . 5. The first-stage thermal desorption assembly 1 includes a pyrolysis cylinder 10, an electric heating rod 11 and a stirrer 12. The upper end of the pyrolysis cylinder 10 is sealed, and four pyrolysis chambers 100 are vertically distributed inside. The upper end of the side wall of the pyrolysis cylinder 10 is There are feeding holes 101 corresponding to the position and quantity of the pyrolysis chamber 100, the upper end of the pyrolysis cylinder 10 is provided with a device plate 102, and a plurality of electric heating rods 11 are provided, and the plurality of electric heating rods 11 are evenly distributed in each pyrolysis chamber The inner wall of 100 is circumferential, and the number of stirrers 12 corresponds to the pyrolysis chamber 100, and each stirrer 12 is respectively rotated and clamped inside each pyrolysis chamber 100, and the top of...

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Abstract

The invention discloses a thermal desorption repairing device for soil contaminated by POPs pesticides, comprising a primary thermal desorption component, a secondary thermal desorption component, a gas collection component, a feeding component and a driving component; a primary thermal desorption component Attached components include pyrolysis cylinder, electric heating rod and stirrer, electric heating rod and stirrer are located inside the pyrolysis cylinder, secondary thermal desorption components include pyrolysis box, soil transmission mechanism and infrared heating mechanism, soil transmission mechanism It is installed inside the pyrolysis box and is used to transport the soil entering the pyrolysis box out of the pyrolysis box. The infrared heating mechanism is used to heat the soil on the transmission mechanism. The volatilized organic gas in the box is collected and purified, the feed assembly is used to put contaminated soil into the pyrolysis cylinder, and the drive assembly is used to drive the pyrolysis cylinder to rotate; the structure design of the invention is reasonable, and the thermal desorption efficiency of POPs pesticide-contaminated soil is high. High, suitable for mass promotion.

Description

technical field [0001] The invention relates to the technical field of soil repair equipment, in particular to a thermal desorption repair device for soil contaminated by POPs pesticides. Background technique [0002] Persistent organic pollutants (POPs) generally refer to a class of toxic organic compounds that are difficult to degrade in the environment, are highly toxic, bioaccumulative, and can be transported over long distances. Such substances degrade slowly in the environment and can remain in ecosystems such as water bodies and soils for a long time; they can also exist in the form of vapor or adsorb on atmospheric particles. Long-distance migration in the atmospheric environment, and deposited in the remote polar regions of the earth through the so-called "global distillation effect" and "grasshopper jump effect"; this kind of substance has neurotoxicity and endocrine disrupting toxicity to organisms, and has obvious carcinogenicity , teratogenic, and mutagenic eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/06
CPCB09C1/065B09C1/062
Inventor 黄剑波万金忠龙涛石佳奇曹少华
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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