Three-section type lifting board rotary kiln device suitable for direct thermal desorption of organic contaminated soil, and using method thereof

Abstract

The invention provides a three-section type lifting board rotary kiln device suitable for direct thermal desorption of organic contaminated soil. The device comprises a direct thermal desorption kiln, a heating system, a centralized control system, a temperature detection devices, a tail gas treatment system, a soil feeding system and a soil discharging system. The heating system, the centralized control system, the temperature detection devices, the tail gas treatment system, the soil feeding system and the soil discharging system are all connected with the direct thermal desorption kiln. Engineering parameters in the thermal desorption process can be adjusted according to different pollution degrees and pollution characteristics, energy consumption is effectively reduced, and the heating rate is increased; and the flowing direction of air in the cavity is consistent with the moving direction of soil, and the air makes direct contact with the soil. The interface is connected with a tail gas collection and treatment device, and the plurality of temperature detection devices and the centralized control system are used for controlling data acquisition, so that the organic contaminated soil remediation process is more efficient, low in energy consumption and visual.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a three-stage lifting plate rotary kiln device suitable for direct thermal desorption of organic polluted soil and its use method. Background technique [0002] With the acceleration of industrialization, the problem of soil pollution is becoming more and more serious, endangering industrial and agricultural production and people's health and safety, and the problem of soil pollution needs to be effectively solved. [0003] In recent years, a variety of soil remediation technologies have emerged, mainly including chemical, biological, and high-temperature thermal remediation. Among them, direct thermal desorption remediation has high efficiency and complete remediation, and is widely used in the remediation of semi-volatile or refractory organic contaminated soils such as petroleum hydrocarbons and pesticides. [0004] The working principle of direct thermal desorption: t...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a direct thermal desorption device and its use method for highly efficient remediation of organic polluted soil, and to solve the problem of slow heat transfer and temperature rise rate of the direct thermal desorption device, low unit processing capacity and high energy consumption , low level of integration and other defects

Images