Electromagnetic thermal desorption remediation method and device used for remediating contaminated sites

A repair method, thermal desorption technology, applied in the field of contaminated site repair, can solve the problems of insufficient cost and application convenience, high installation and disassembly costs, complex equipment and other problems, and achieve accurate and efficient thermal desorption, high power consumption cost, High safety effect

Inactive Publication Date: 2016-10-05
李泽唐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the thermal desorption technology has a large device volume, high installation and disassembly costs, and a long construction period. In the actual treatment process, the treatment cost is generally too high, resulting in a huge funding gap fo

Method used

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  • Electromagnetic thermal desorption remediation method and device used for remediating contaminated sites
  • Electromagnetic thermal desorption remediation method and device used for remediating contaminated sites
  • Electromagnetic thermal desorption remediation method and device used for remediating contaminated sites

Examples

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Example Embodiment

Specific embodiment one

[0035] The structure of an embodiment of the present invention is shown as figure 2 Shown is a top view of the device. The electromagnetic thermal desorption device is a track-type hinged scraper device, equipped with a scraper stirring device, the spacing between the scrapers is 5cm, the scraper blades are fixed on the hinge, and the scraper is driven by the drive wheels at both ends to reciprocate through the hinge. The driving wheel is connected with a variable frequency motor and a reducer. The variable frequency motor has a drive power of 3kW, an adjustable speed, and a speed adjustment range of 0.01 to 2 revolutions per minute; the track-type thermal desorption device has a rectangular section and a width of 200mm. The contaminated soil is transported in a racetrack tank. The driving wheel diameter is 500mm, and the center distance between the two wheels is 3000mm. It is made of stainless steel, with built-in stainless steel hinges and porous scra...

Example Embodiment

Specific embodiment two

[0039] The structure of another embodiment of the present invention is shown as image 3 Shown is the side view of the device. The electromagnetic thermal desorption device is a cylindrical spiral stirring device, which is equipped with a stirring spiral spindle with a pitch of 8cm and a diameter of 200mm. The spiral blades are fixed on the spindle. The spindle is connected to the driving wheel through the circulating water cooling device 14. It is connected to the variable frequency motor 16 and the reducer connecting shaft 15. The variable frequency motor 16 has a driving power of 3kW, an adjustable speed, and a speed adjustment range of 0.1-20 rpm; the spiral thermal desorption device has a circular section and a diameter. It is 220mm, so that the contaminated soil can be transported in the cylindrical tank. The spiral thermal desorption cylinder is 5000mm long and made of stainless steel. The asbestos insulation material is laid on the outside of th...

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Abstract

The invention provides an electromagnetic thermal desorption device used for remediating contaminated sites. Contaminated soil is heated, stirred and conveyed in a ferromagnetic material stirring device and a tank body through electromagnetism. Through heating the contaminated soil in the device, the thermal desorption heat transfer property and the organic pollutant separating effect are improved. The electromagnetic thermal desorption device comprises a material conveying device, an electromagnetic heating device and an exhaust gas treating and purifying device, wherein the electromagnetic heating device comprises an excitation controller, a heating coil, a thermal insulating material, a heating and conveying device, a temperature probe, a circulating water cooler and the like; and the exhaust gas treating and purifying device comprises an exhaust gas collecting pipe, a dust precipitator, a condenser, a collector, a catalytic oxidation device and the like. For heavy metal, low-melting-point glass powder and natural mirabilite powder are added, glassy substances are formed after temperature is raised through heating, the glassy substances solidify, and heavy metal pollutants are eliminated. The electromagnetic thermal desorption device has the characteristics of high heating speed, high heat transfer effect and small exhaust gas output. The size of a system is small, a moving treatment platform can be integrated, and integral transporting in-situ operation is realized.

Description

technical field [0001] The invention relates to the technical field of remediation of polluted sites, in particular to an environment remediation method and device for heating polluted soil or sludge and separating pollutants therefrom through electromagnetic heating technology. Background technique [0002] With the acceleration of industrialization and urbanization in my country, the adjustment of urban planning and urban layout, the relocation of a large number of polluting enterprises, leaving behind a large number of polluted industrial sites, the problem of polluted soil is becoming more and more serious, coupled with the frequent occurrence of sudden pollution incidents in our country, Sudden water pollution incidents and petrochemical plant explosions occur from time to time, causing serious environmental hazards. Common pollutants in explosion-type or accident-type pollution sites include alkanes, benzene series, polycyclic aromatic hydrocarbons and other semi-volatil...

Claims

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Application Information

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IPC IPC(8): B09C1/06
Inventor 李泽唐
Owner 李泽唐
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