Carbonization treatment device for oily sludge

Abstract

The invention relates to a carbonization treatment device for oily sludge. The carbonization treatment device comprises a screw conveying pump, a back mixing machine, a drying machine, a dry material conveyor, a carbonizing machine and a carbon discharging machine which are sequentially connected and communicated, wherein the carbon discharging machine is used for transporting materials; the back mixing machine is connected and communicated with the dry material conveyor; part of dry materials formed by drying in the drying machine and the oily sludge are mixed in the back mixing machine; a material cavity and a combustion chamber of the carbonizing machine, which are connected by a pipeline, are arranged on the carbonizing machine; the combustion chamber is positioned below the material cavity of the carbonizing machine and is used for recovering pyrolysis gas generated by the material cavity of the carbonizing machine; a heating cavity of the drying machine is arranged on the drying machine and is connected and communicated with the combustion chamber through a pipeline; heat-containing flue gas exhausted by the carbonizing machine is conveyed in the drying machine. The invention aims at achieving the purpose that the oily sludge is sufficiently dried and pyrolyzed by adopting a dry-wet mixing mode and a mode of recovering the heat-containing flue gas and the pyrolysis gas generated by the carbonizing machine.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a carbonization treatment device for oily sludge. Background technique [0002] Oily sludge is a hazardous solid waste produced in the process of petroleum exploration, development, transportation and refining. It has the characteristics of difficult dehydration, high viscosity and complex components. The moisture content is usually 60%-90%. [0003] At present, the treatment technologies of oily sludge at home and abroad are mainly divided into three categories: physical and chemical extraction method, biodegradation method and heat treatment method. Compared with other methods, the heat treatment method has great advantages in harmlessness, reduction and resource utilization. The main means are incineration and pyrolysis. Insufficient, high water content of the product oil, poor safety and reliability, waste heat of flue gas and low energy utilization rate of pyrolysi...

AI Technical Summary

Problems solved by technology

[0006] The structure of the device is complicated, the operation and management are cumbersome, an external heating source is required in the drying stage, and the heat taken away by the carbonization product is not fully utilized, and the equipment investment cost and operating cost are high.

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