Treatment method for industrial organic solid waste

Abstract

The invention discloses a treatment method for an industrial organic solid waste. The treatment method comprises the following steps of: S1. shuttle kiln pyrolysis: putting the solid waste into a miniature pyrolysis tank, heating the solid waste by a shuttle kiln, and directly volatilizing an organic matter in the solid waste or volatilizing the organic matter through high temperature cracking; S2, cooling and dust removal: accessing pyrolysis gas into a cooling and dust removal system, and recovering base oil in the pyrolysis gas; S3, condensation and purification: inputting the pyrolysis gasafter cooling and dust removal into an condensation purification system, recovering liquid and gaseous organic matters in the pyrolysis gas gradually; and S4, unloading: after the pyrolysis is completed, removing the organic matters out of a kiln car, unloading the miniature pyrolysis tank whose internal solid waste has been pyrolyzed, installing the miniature pyrolysis tank with the solid wasteto be pyrolyzed in the next batch, and carrying out the next batch of pyrolysis. According to the invention, the pyrolysis of the solid waste containing organic pollutants is not limited to rotary kiln pyrolysis any longer, dynamic sealing is avoided, a high-temperature oil and gas cavity is minimized, and accidents during a treatment process are avoided.

Description

technical field [0001] The application relates to the technical field of pyrolysis treatment of solid waste containing organic pollutants in environmental protection, and specifically relates to a treatment method for industrial organic solid waste. Background technique [0002] Industrial solid wastes containing organic pollutants are mostly hazardous wastes. For example, oily drilling cuttings and oily sludge in the petroleum industry belong to HW08 hazardous wastes, and tar residue in the coal chemical industry belongs to HW11 hazardous wastes. [0003] Through the pyrolysis treatment technology, the organic components such as crude oil and tar in the waste are heated, evaporated, cracked and gasified, separated from the solid phase material, and then condensed to recover the base oil, and the remaining solid phase residue meets the discharge standard. Pyrolysis technology completely transforms hazardous waste into industrial raw materials and industrial fuels with indust...

AI Technical Summary

Problems solved by technology

The physical properties of the material change from high solid-containing liquid phase to slime, dry powder, hard lump, etc., and the physical state also changes gradually from liquid to solid during the reprocessing process. Therefore, the dry pyrolysis technology represented by rotary kiln and double blades , there is a fundamental flaw in the control of the material movement during the process, and at the same time, the relatively small heat transfer area meets the heat conduction inertia of the solid material and the result is inefficiency

[0004] Waste materials such as highly oily sludge and tar residue, especially high asphalt sludge, are very viscous during the treatment process, and coking and agglomeration are not conducive to the movement of materials, causing huge damage during the operation of conventional rotary kiln thermal desorption equipment. Trouble has become a major defect in the operation of rotary kiln equipment, and has become the bottleneck of rotary kiln pyrolysis technology for decades

At the same time, the rotary kiln technology has disadvantages such as organic gas leakage, serious dust, low treatment efficiency, and unstable treatment effect.

[0005] Theoretically, kilns other than rotary kilns can solve the above-mentioned problems of rotary kilns; however, actual research shows that when other kilns are used to pyrolyze solid waste containing organic pollutants, there is a problem of inability to burn through, that is, after sintering The solid waste in the middle of the kiln still cannot meet the standard; even if the pyrolysis temperature is increased and the pyrolysis time is extended at all costs, the problem of incomplete combustion is still difficult to solve

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