Process for recycling waste mineral oil without hazardous material emission

Abstract

The invention discloses a process for recycling waste mineral oil without hazardous material emission. The process includes steps of 1, carrying out heating pyrolysis; 2, carrying out condensation and liquefaction and simultaneously recycling combustible gas; 3, carrying out conditioning; 4, storing finished products; 5, clearing coke residues, and to be more specific, clearing solid residual substances-coke residues obtained after clearing pyrolysis is carried out in reaction kettles; 6, gasifying the coke residues, to be more specific, crushing the coke residues cleared at the step 5 to obtain granules, then feeding the granules into a coke residue gasification furnace, gasifying the granules by the aid of the gasification furnace to obtain combustible gas, leading the combustible gas into a gas furnace used at the step 1 and combusting the combustible gas in the combustible furnace. The process has the advantages that certain waste gas and waste residues which are generated during pyrolysis on the waste mineral oil can be used as fuel to be fed into heating furnaces for the reaction kettles in closed-loop procedures, and accordingly the process is basically free of emission of toxic waste gas and toxic waste residues; all combustible substances in the waste mineral oil can be comprehensively sufficiently utilized, accordingly, environments can be protected, energy can be saved, and the process is favorable for society and people.

Description

technical field [0001] The invention relates to the technical field of recycling waste mineral oil, in particular to a recycling process for waste mineral oil without discharging dangerous substances. Background technique [0002] Waste mineral oil in daily production and life mainly refers to waste diesel oil, waste engine oil, or rolling oil produced during cleaning and maintenance, among which waste engine oil is the main one, and waste engine oil is lubricating oil due to external pollution during use. Substances that produce a large amount of colloids and oxides that reduce or even lose their proper efficacy and are discarded. The National Environmental Protection Agency has listed waste engine oil as one of the three main points of control in the field of environmental protection in the 21st century, and making full use of waste engine oil to regenerate and restore finished engine oil, or refining waste engine oil into gasoline and diesel can not only alleviate my coun...

AI Technical Summary

Problems solved by technology

Generally speaking, the amount of waste engine oil that can be recycled should be about 50% of the consumption. However, the recovery rate of waste engine oil is very low at present. Unknown, part of which is discharged into the environment and causes pollution

Although waste engine oil can also be used as fuel, when burning waste engine oil, the heat dissipation is small, and a large amount of thick smoke will be produced, which will cause great pollution to the environment and harm to the human body, and produce little beneficial effect.

Therefore, it is urgent to propose a complete recycling scheme to deal with this problem. The schemes in the prior art are all concentrated in the distillation cracking stage, and rarely involve the treatment of solid waste generated after distillation.

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