Intelligent combustion treatment integrated machine used for thermal desorption remediation of contaminated site

Abstract

The invention discloses an intelligent combustion treatment integrated machine used for thermal desorption remediation of a contaminated site. The integrated machine comprises a fuel gas supply unit,a combustion air supply unit, a backdraft waste-gas introduction unit, a burner, a combustion chamber, and a control cabinet. In the integrated machine, fuel gas and combustion air are contacted by the burner, ignition is performed by using an igniter, continuous stable combustion is performed in the combustion chamber, and high-temperature flue gas generated in the combustion chamber is sent to athermal desorption remediation system for indirect conduction heat exchange; and the desorbed organic waste gas generated by the thermal desorption remediation system can be sent to the combustion chamber through the backdraft waste-gas introduction unit of the intelligent combustion treatment integrated machine for thermal combustion treatment. The integrated machine provided by the invention can use the conventional gas fuel as an energy source, has high utilization efficiency of energy sources and simple, safe, stable and reliable system equipment, has the functions of combustion heat generation and waste-gas thermal combustion treatment, and can provide a stable high-temperature combustion flue gas heat source and good high-concentration desorption organic waste-gas heat treatment solution for the thermal desorption remediation technology.

Description

technical field [0001] The invention relates to a device for remediation of polluted sites, in particular to an intelligent combustion and treatment integrated machine for in-situ thermal desorption or pile-type thermal desorption repair of polluted sites. Background technique [0002] Thermal Desorption technology can be widely used in in-situ or ex-situ remediation of volatile organic compounds, semi-volatile organic compounds, petroleum hydrocarbons or mercury-contaminated sites. This technology heats the polluted soil and / or groundwater to close to or even exceed the boiling point of the target pollutant by means of direct or indirect heating, and selectively promotes the desorption, gasification, volatilization, Decompose or increase its mobility, so that the target pollutants can be separated from the soil medium and removed, so as to achieve the purpose of remediation of contaminated sites. [0003] The in-situ thermal desorption remediation technology can be impleme...

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Problems solved by technology

[0005] At present, the engineering application of in-situ thermal desorption remediation technology or pile-type thermal desorption technology in domestic contaminated site remediation is still relatively limited. The injection heating desorption technology is susceptible to various difficulties such as the limitation of soil conditions and the upper limit of the target temperature, the high energy cost required for heating, and the difficulty in handling the generated desorption waste gas.

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