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Resource utilization method for waste lubricating oil

A waste lubricating oil, recycling technology, applied in the direction of lubricating composition, petroleum industry, treatment of hydrocarbon oil, etc., to achieve the effect of reducing dosage, improving conversion rate and high yield

Active Publication Date: 2012-11-21
河北镕达环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

while greater than 500 o C Heavy oil needs to be distilled by catalytic reaction and then hydrogenated to upgrade

Method used

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  • Resource utilization method for waste lubricating oil
  • Resource utilization method for waste lubricating oil
  • Resource utilization method for waste lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The raw material waste lubricating oil is injected into the atmospheric distillation tower, and the waste residue and gas generated in the conversion process of the waste engine oil are used for heating. Cut into distillate oil according to distillation temperature ( 500°C). Table 1 below shows the results of atmospheric distillation material balance.

[0026]

[0027] Table 2 Distillate oil properties before and after atmospheric distillation

[0028]

Embodiment 2

[0030] Gas phase catalytic cracking of heavy oil on molecular sieve / alumina catalyst. The heavy oil is injected into a reactive distillation tower equipped with a molecular sieve / alumina catalyst for reaction and rectification. The catalyst is composed of alumina containing 30% ZSM-5 and 10% β zeolite, and 2.0 is obtained by bonding and molding. -3.0 mm cylindrical product, length 3-8 mm, bulk density 0.65-0.80 g / mL, strength greater than 40 N / mm. The waste residue and fuel gas generated in the conversion process of waste lubricating oil are used for heating, and the ratio of fuel to oil is controlled between 1-20. The generated gas is used to heat the distillation tower. Table 3 below sees the results of the catalytic distillation material balance test.

[0031]

Embodiment 3

[0033] The hydrogenation catalyst adopts a supported nickel molybdenum sulfur catalyst. Carrier uses SiO 2 -Al 2 O 3 , The specific surface area is 200-400 m 2 / g, the pore volume is 0.5-2.0 cm 3 / g, the most probable pore size distribution is 2-4 nm and 10-15 nm. The cobalt molybdenum sulfide precursor uses cobalt nitrate or cobalt acetate or cobalt acetylacetonate and ammonium thiomolybdate. The supported cobalt-molybdenum sulfide catalyst is prepared by adopting the equal volume impregnation method through the steps of impregnation-drying-roasting. Table 4 below sees the reaction process conditions and product composition.

[0034]

[0035] From Table 4, it can be seen that the distillate oil is at 360°C on the supported cobalt-molybdenum sulfide catalyst. o C hydrofining, no diolefins and gums were detected in the product obtained, and the content of sulfur and nitrogen was greatly reduced, indicating that the supported cobalt-molybdenum sulfide catalyst has good desulfuriz...

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Abstract

The invention discloses a resource utilization method for waste lubricating oil and belongs to the fields of environmental protection and energy technology. The method is characterized in that the waste lubricating oil is used as the raw material, is distilled and then is hydrofined to produce high-quality gasoline, diesel and base oil, and comprises the steps that the waste lubricating oil is firstly distilled to obtain a fraction with the temperature lower than 500 DEG C and a fraction with the temperature higher than 500 DEG C, then the fraction with the temperature lower than 500 DEG C is reacted in a manner of hydrofining on a sulfide catalyst, a monoene compound is removed by monoolefine hydrostturation reaction, desulfuration, denitrification, deoxygenation and colloid removal are carried out to produce odorless high-quality mixed oil of the gasoline, the diesel and the base oil, and then the mixed oil is distilled to obtain distillate oil of the gasoline, the diesel and the base oil. The distilled fraction with the temperature higher than 500 DEG C is hydrofined after being reactively distilled. The method disclosed by the invention has the advantages of simple process, high catalyst activity and selectivity, and good economic benefits and industrial application prospects.

Description

Technical field [0001] The invention belongs to the technical field of environmental protection and energy, and relates to a method for resource utilization of waste lubricating oil. Background technique [0002] Waste lubricating oil refers to the lubricating oil replaced from various machinery, vehicles, and ships. The production process is due to the fact that the lubricating oil is polluted by the outside and produces a large amount of gum and oxides during use, thus losing its due effect. According to statistics, there are currently more than 200 million motor vehicles in my country, more than 100,000 transport ships, and nearly 400,000 motorized fishing vessels. These three items alone require 5 million tons of lubricating oil to be replaced each month, but the number is very small. There is recycling, which causes waste of oil and pollutes the environment. The deep processing of waste lubricating oil into clean fuel has an important strategic position in energy substituti...

Claims

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Application Information

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IPC IPC(8): C10G67/14C10M175/00
Inventor 梁长海李闯陈霄汪镭肖子辉
Owner 河北镕达环保科技有限公司
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