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Method for producing petrol and diesel oil by recycling waste lubricant oil

A technology for waste lubricating oil, gasoline and diesel oil, applied in lubricating compositions, petroleum industry, hydrocarbon distillation, etc., can solve the problems of low product grade, poor economic benefit, secondary pollution, etc., achieve wide raw material range, reduce consumption, improve conversion rate effect

Active Publication Date: 2009-07-08
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved in the present invention is to aim at problems such as low yield, low product grade, poor economic benefit and secondary pollution in the conversion process of waste lubricating oil, and realize resource utilization of waste lubricating oil with clean gasoline and diesel as the target product. And comprehensively utilize the waste residue and gas in the process itself, so that the production process is energy-saving and environmentally friendly, and avoids secondary pollution

Method used

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  • Method for producing petrol and diesel oil by recycling waste lubricant oil
  • Method for producing petrol and diesel oil by recycling waste lubricant oil

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Experimental program
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Effect test

Embodiment 1

[0023] Catalyst A is composed of alumina containing 30% ZSM-5 and 10% beta zeolite, and a columnar product of 2.0-3.0 mm can be obtained by bonding and molding, with a length of 3-8 mm, a bulk density of 0.65-0.80 g / ml, and a strength greater than 40 N / m mm. The product has high activity and good carbon resistance, has good stability, and is suitable for the largest volume of diesel products.

[0024] Catalyst B is composed of alumina containing 30% Y zeolite, 20% ZSM-5 and 10% Beta zeolite, and a columnar product of 1.8-2.5mm is obtained by bonding molding, with a length of 3-8mm and a bulk density of 0.70-0.85g / ml , the strength is greater than 40N / mm. The product has high activity and moderate impact resistance. It is suitable for deep conversion of waste lubricating oil and reduces the freezing point effect of diesel products.

Embodiment 2

[0026] The properties of waste lubricating oil are shown in Table 1. It can be seen from the table that the raw materials of waste lubricating oil have higher density and lower freezing point, so the production of light diesel oil needs to crack and isomerize high-boiling alkanes in order to achieve the purpose of light weight and depressing pour point. At the same time, gas cannot be produced by excessive cracking, which will affect the yield of liquid products.

[0027] Table 1 Properties of waste lubricating oil raw materials

[0028]

Embodiment 3

[0030] Using waste lubricating oil as raw material, adopting catalyst A and catalyst B to utilize the technical scheme of the present invention to produce light oil (gasoline and diesel oil) results on laboratory kilogram-level devices.

[0031] Table 2 Reaction process conditions and product composition

[0032] Catalyst A Catalyst B Process conditions

[0033] It can be seen from Table 2 that under the condition of solvent-oil ratio of 1:10, catalyst A has a light oil yield of 90.00%, a total liquid yield of 94.54%, and a light oil density of 0.827g / cm 3 , The freezing point of light oil is -13°C, which is -11°C lower than the freezing point of raw materials. Under the condition of catalyst oil ratio of 1:10, the light oil yield of Catalyst B is 90.14%, the total yield is 94.94%, and the light oil density is 0.825g / cm 3 , The freezing point of light oil is -16°C, which is -14°C lower than the freezing point of raw materials. The above results show that Ca...

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Abstract

The invention relates to a method for producing gasoline and diesel fuel through resource utilization of waste lubricant oil, which belongs to the technical field of environmental protection and energy resources. The method comprises: integrally performing the vapor phase catalytic cracking process on molecular sieve / alumina catalyst of the waste lubricant oil and the fractionation and separation process of reaction products in a reaction fractionator; injecting crude waste oil into a distillation kettle, and adopting waste residue and fuel gas generated during conversion of the waste lubricant oil for heating, wherein the temperature of the distillation kettle is controlled to be between 250 and 500 DEG C; making distilled oil gas enter the reaction fractionator which is filled with the molecular sieve / alumina catalyst for reaction and rectification when the distillation kettle is heated to 250 DEG C, wherein the ratio of the catalyst to oil is controlled to be between 1 and 20; and cutting the oil into the gasoline and the diesel fuel according to the distilled temperature, wherein fuel gas generated by reaction and residual cinder can be used for heating the distillation kettle, and generated fuel gas can be used for heating the distillation kettle. The method has the advantages of wide range of raw materials, normal-pressure reaction and separation, simple technological flow, high conversion and selectivity of products, long service life of the catalyst, comprehensive utilization of the fuel gas and the cinder, no secondary pollution, large operating flexibility of a production apparatus, and small investment.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and energy, and relates to a method for producing gasoline and diesel by resource utilization of waste lubricating oil. Background technique [0002] my country's lubricating oil production accounts for about 2% of the total petroleum products, more than 5 million tons per year. Replacement is required due to changes in the composition and physicochemical properties of the lubricating oil during use. The total amount of waste oil accounts for about 40% of the total amount of lubricating oil, so the total amount of waste lubricating oil is about 2 million tons. The resource utilization of waste lubricating oil and other wastes can not only make up for the lack of non-renewable petroleum resources, but also meet the increasingly stringent environmental protection requirements. The regeneration of lubricating oil as the target product mainly adopts the sulfuric acid-clay process. D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00C10G7/00
Inventor 梁长海殷江锋
Owner DALIAN UNIV OF TECH
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