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Method and device for utilizing waste lubricating oil to produce diesel oil

A technology for waste lubricating oil and production equipment, which is applied in the direction of lubricating composition, refining and cracking process treatment only in multi-stage series, etc., to achieve the effect of increasing the content of diesel components

Inactive Publication Date: 2014-01-01
连力生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the prior art, a large amount of waste liquid will be produced when the distillate is processed, and the waste liquid is easy to pollute the environment. Moreover, the existing The technology has a long process cycle and low efficiency; and then proposes an environmentally friendly and efficient method for producing diesel from waste lubricating oil

Method used

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  • Method and device for utilizing waste lubricating oil to produce diesel oil
  • Method and device for utilizing waste lubricating oil to produce diesel oil
  • Method and device for utilizing waste lubricating oil to produce diesel oil

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Add 2.5kg of catalyst to 5 tons of waste lubricating oil preheated to 100°C and mix, slowly raise the temperature at a rate of 0.7°C / min and keep it at 180°C. The oil phase obtained after water separation is gas oil, and the gas oil is decolorized, and a stabilizer and an anti-wax agent are added to obtain a diesel product. The diesel yield of the above waste lubricating oil production process is 85%.

[0056] The catalyst consists of 1% iron oxide, 1% magnesium oxide, γ-Al 2 o 3 10%, η-Al 2 o 3 30%, calcium oxide 18% and silicon dioxide 40%.

Embodiment 2

[0058] Add 5 kg of catalyst to 5 tons of waste lubricating oil preheated to 120°C and mix, slowly raise the temperature at a rate of 1°C / min and keep it at 340°C, and condense the fraction distilled at 340°C with warm water, oil-gas separation, and gas-water The oil phase obtained after separation is gas oil, and the gas oil is decolorized, added with a stabilizer, a cetane number improver and an anti-wax agent to obtain a diesel product, and the diesel yield of the above waste lubricating oil production diesel process is 87.5% .

[0059] The catalyst consists of 10% iron oxide, 1% magnesium oxide, γ-Al 2 o 3 40%, calcium oxide 29% and silicon dioxide 20%.

Embodiment 3

[0061]Add 5 kg of catalyst to 5 tons of waste lubricating oil preheated to 200°C and mix, slowly raise the temperature at a rate of 0.8°C / min and keep it at 365°C, and condense the distilled fraction at 365°C with warm water, oil-gas separation, and gas-water The oil phase obtained after separation is gas oil, and the gas oil is decolorized, added with a stabilizer, a cetane number improver and an anti-wax agent to obtain a diesel product, and the diesel yield of the above waste lubricating oil production diesel process is 89%. .

[0062] The catalyst consists of 1% iron oxide, 10% magnesium oxide, γ-Al 2 o 3 20%, η-Al 2 o 3 20%, calcium oxide 29% and silicon dioxide 20%.

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Abstract

The invention discloses a method for utilizing waste lubricating oil to produce diesel oil. The method includes the steps that the waste lubricating oil and a catalyst are heated to 180-410 DEG C and reacted, oil phases obtained from condensing cut fractions generated at the temperature are coarse diesel oil, diesel oil products are produced after the coarse diesel oil is refined, and the adopted catalyst is composed of 1-10wt% of ferric oxide, 1-10wt% of magnesium oxide, 20-40wt% of gamma-A12O3 and / or eta-A12O3, 3-20wt% of calcium oxide and 20-40wt% of silicon dioxide. The invention further provides a production device for implementing the method. The production device comprises a reaction still, a preheating tank, a combustor, a condenser, an oil-gas separator, a gas-water separator, a temperature sensor, a gaseous phase catalytic converter, a stock tank, a fuel oil tank and the like. Fuel is ignited in a combustion chamber of the combustor, heat in a gas duct can heat materials in the preheating tank, the reaction still can be further heated in the combustion chamber, the temperature of the combustion chamber is kept at 180-410 DEG C, evaporant in the reaction still is sent to the condenser after being catalyzed by a gaseous phase catalyst or directly sent to the condenser for condensation, condensate is refined after being processed by the oil-gas separator and the gas-water separator to obtain the diesel oil, and then the diesel oil yield can reach more than 85%.

Description

technical field [0001] The invention relates to a method for producing diesel from waste lubricating oil and a device using the method, belonging to the technical field of waste oil treatment. Background technique [0002] Lubricating oil is used in most types of machinery, because lubricating oil can reduce the friction between machinery or parts, so as to protect the surface of machinery or parts, reduce wear and prolong the service life of machinery. Lubricating oil is obtained by refining base oil and adding additives, and its output accounts for about 2% of the total petroleum products. Due to the large differences in the operating environments of different types of machinery, lubricating oils are prone to deterioration due to physical or chemical changes in various complex environments and become waste lubricating oils. [0003] For the treatment of waste lubricating oil, most of the waste lubricating oil is regenerated and used at home and abroad at present. The pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/06C10M175/00
Inventor 连力生魏厚瑗
Owner 连力生