Fluidized bed thermal desorption device

Abstract

The invention discloses a fluidized bed thermal desorption device. The fluidized bed thermal desorption device is used for treating polluted soil, and comprises a thermal desorption device, a tail gas treatment device, a screening machine, a quenching tower, an oil-water separator, a cyclone dust collector, a slag extractor, a fluidized bed, a first burner and a second burner, wherein a feed inlet of a thermal desorption chamber communicates with a sand outlet of the fluidized bed and a polluted soil feed hopper; a feed outlet and an air outlet of the thermal desorption chamber respectively communicate with a feed inlet of the screening machine and an air inlet of the quenching tower; a sand outlet of the screening machine communicates with a sand inlet of the fluidized bed; an air outlet of the quenching tower communicates with an inlet of the second burner; a water outlet of the quenching tower communicates with a water inlet of the oil-water separator; a water outlet of the oil-water separator communicates with a water inlet of the quenching tower; a smoke outlet of the fluidized bed communicates with an air inlet of the cyclone dust collector; a smoke outlet of the cyclone dust collector communicates with an inner cavity defined by the thermal desorption chamber and a smoke clamping sleeve; the tail gas treatment device communicates with the inner cavity; and a feed inlet of the slag extractor communicates with a dust outlet of the cyclone dust collector. According to the thermal desorption device, the treatment capacity is high, the pollutant removal rate is high, and the device is economic and practical.

Description

Technical field: [0001] The invention relates to a contaminated soil remediation device, in particular to a fluidized bed thermal desorption device. Background technique: [0002] With the development of society, technology and economy, people's living standards and health levels are constantly improving, which puts forward higher requirements for the realization of a green environment, and the control of environmental pollution has become an important issue in urban construction. With the adjustment of the industrial structure, many industrial enterprises in the main urban areas of many cities have closed down or relocated, leaving behind a large amount of highly polluted soil, including a large amount of organic polluted soil, which will pollute the surrounding air and water, causing adverse effects on people's life and health. These polluted sites must undergo soil remediation before they can be put into new uses. Therefore, remediation and treatment of polluted soil has ...

AI Technical Summary

Problems solved by technology

[0005] The prior art also discloses some treatment methods and related devices for contaminated soil, but these are partial improvements made on the existing thermal desorption technology, such as the conventionally used rotary kiln thermal desorption equipment, this desorption The heat loss of the equipment is very large, the heat utilization rate is very low, the corresponding contaminated soil treatment capacity is not high, and the pollutants are not completely removed

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