Device and process for treating chemical dangerous and waste sludge

Abstract

The invention belongs to the technical field of chemical sludge treatment, and particularly relates to a device and process for treating chemical dangerous and waste sludge. The device comprises a storage trough A, a high-position storage trough, a storage tank, a mixed oil tank, a storage trough B, a finished oil storage trough, a sewage storage tank, a mixed tank, a reaction still, a condensation tank, a screw pump, a stirrer A, a high-pressure plunger pump, a stirrer B, a high-pressure pump, a sludge pump, a chemical pump, a preheater, a circulating water cooling device, a circulating water condensation device, an ultrasonic generator, a transducer, a cross-flow ceramic film assembly and a reducing valve. Compared with the prior art, the device and process have the advantages that the problems of reaction still corrosion and hard industrial amplification caused by super criticality are avoided; generated solid waste is reduced; a reflux device is additionally arranged, the use amount of a solvent is reduced, and the solvent residual amount in oil and water is reduced; the problems of high cost and large secondary pollution are avoided.

Description

technical field [0001] The invention belongs to the technical field of chemical sludge treatment, and in particular relates to a device and process for treating chemical hazardous waste sludge. Background technique [0002] Chemical enterprises produce a large amount of sludge during production and wastewater treatment, which belongs to hazardous waste, such as "wastewater treatment sludge and residue generated during physical and chemical treatment of hazardous waste" in the "National Hazardous Waste List" (2008) HW49 other wastes. The current disposal methods include landfill, pyrolysis, and incineration. Landfilling is difficult to implement due to large land occupation and insufficient storage capacity of existing hazardous waste landfills. At present, the methods encouraged by the state are incineration, or transfer to cement kiln coordination. For example, Chinese patent (CN103438464A) discloses a method for incinerating industrial sludge containing hazardous waste. T...

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Problems solved by technology

Incineration and pyrolysis are both high-temperature heating treatments, which have the problems of high energy consumption and large secondary pollution

Aiming at the high temperature and high pressure of sludge to produce material oil, most of them are concentrated in the field of supercritical municipal sludge, and the temperature is high and the pressure is high. The requirements for the industrialization of equipment are too high, and it is difficult for practical application

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