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Method for basic oil adsorption treatment with silica gel and silica gel regeneration and recycling

A technology of adsorption treatment and base oil, which is applied in the direction of hydrocarbon oil treatment products, hydrocarbon oil treatment, hydrogenation treatment process, etc., can solve the problems of poor oxidation stability of oil products, and achieve the effect of good oil quality

Active Publication Date: 2019-09-17
WUHAN TEXTILE UNIV
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of poor base oil oil (such as oxidation stability) obtained by the waste lubricating oil regeneration process existing in the prior art, and to provide a method of using silica gel to base oil adsorption treatment and silica gel regeneration cycle method of use

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  • Method for basic oil adsorption treatment with silica gel and silica gel regeneration and recycling

Examples

Experimental program
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Effect test

Embodiment 1

[0066] This example is used to illustrate the waste lubricating oil regeneration method provided by the present invention.

[0067] The waste lubricating oil (provided by Anhui Guofu Lubricating Oil Company) was subjected to vacuum distillation, and then solvent refined with nitrogen methyl pyrrolidone.

[0068] Under stirring, the base oil after the solvent refining was mixed with WSQ-2 denitrification agent (purchased from Wuhan Hannan Jinhe Petrochemical Co., Ltd.) for denitrification treatment. The denitrification temperature was 90° C. and the time was 40 min. The agent-to-oil ratio is 1:300.

[0069] The base oil obtained after denitrification is injected into a fixed-bed adsorption tower filled with silica gel for adsorption treatment. The silica gel has a particle size of 1-3 mm and an average pore size of 9.97 nm, provided by Qingdao Xinchanglai Silica Gel Co., Ltd. The temperature of the adsorption treatment is 120°C, and the space velocity is 1.5h -1 .

[0070] W...

Embodiment 2

[0073] This example is used to illustrate the waste lubricating oil regeneration method provided by the present invention.

[0074] The waste lubricating oil (provided by Anhui Guofu Lubricating Oil Company) was subjected to vacuum distillation, and then solvent refined with nitrogen methyl pyrrolidone.

[0075] Under stirring, the base oil after the solvent refining was mixed with WSQ-2 denitrification agent (purchased from Wuhan Hannan Jinhe Petrochemical Co., Ltd.) for denitrification treatment. The denitrification temperature was 90° C. and the time was 40 min. The agent-to-oil ratio is 1:300.

[0076] The base oil obtained after denitrification is injected into a fixed-bed adsorption tower filled with silica gel for adsorption treatment. The silica gel has a particle size of 1-3mm and an average pore size of 7.62nm, provided by Qingdao Xinchanglai Silica Gel Co., Ltd. The temperature of the adsorption treatment is 100°C, and the space velocity is 1h -1 .

[0077] When ...

Embodiment 3

[0080] This example is used to illustrate the waste lubricating oil regeneration method provided by the present invention.

[0081] The waste lubricating oil (provided by Anhui Guofu Lubricating Oil Company) was subjected to vacuum distillation, and then solvent refined with nitrogen methyl pyrrolidone.

[0082] Under stirring, the base oil after the solvent refining was mixed with WSQ-2 denitrification agent (purchased from Wuhan Hannan Jinhe Petrochemical Co., Ltd.) for denitrification treatment. The denitrification temperature was 90° C. and the time was 40 min. The agent-to-oil ratio is 1:300.

[0083] The base oil obtained after denitrification is injected into a fixed-bed adsorption tower filled with silica gel for adsorption treatment. The silica gel has a particle size of 1-3mm and an average pore size of 13.02nm, provided by Qingdao Xinchanglai Silica Gel Co., Ltd. The temperature of the adsorption treatment is 160°C, and the space velocity is 2h -1 .

[0084] When...

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Abstract

The invention relates to the technical field of waste oil recycling and use and discloses a method for basic oil adsorption treatment with silica gel and silica gel regeneration and recycling. The method comprises the following steps: (1) injecting a basic oil raw material into a fixed bed adsorption tower for adsorption treatment; (2) when basic oil obtained after adsorption treatment cannot meet requirements, carrying out on-line regeneration on a silica gel bed layer in the fixed bed adsorption tower, wherein the regeneration process comprises steps of on-line blowing desorption of the silica gel bed layer with a gas medium, and on-line burning regeneration; and (3) recycling the regenerated silica gel bed layer in the fixed bed adsorption tower to adsorption treatment on the basic oil raw material. By adopting the method disclosed by the invention, waste lubricating oil is regenerated, and the obtained basic oil has good oil product quality.

Description

technical field [0001] The invention relates to the technical field of waste oil recovery and utilization, in particular to a method for using silica gel to absorb base oil, regenerate and recycle silica gel, and a method for regenerating waste lubricating oil. Background technique [0002] During the use of lubricating oil, due to mechanical friction and moisture and oxygen entering the lubricating oil, oxidation will gradually occur and the performance of the lubricating oil will be damaged. Especially the lubricating oil of the internal combustion engine system will oxidize quickly due to the harsh working environment. The main performance is that the color of the oil becomes darker, the acid value increases, and it is accompanied by a pungent taste, so it must be replaced regularly. Traditionally, people call this kind of lubricating oil "waste oil". Except for a small part of the waste lubricating oil that is lost due to volatilization, leakage and other reasons, most ...

Claims

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Application Information

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IPC IPC(8): C10G25/00C10G25/12C10G53/08C10G67/06C10G67/14
CPCC10G25/003C10G25/006C10G25/12C10G53/08C10G67/06C10G67/14C10G2300/1007C10G2400/10
Inventor 夏明桂周玉清夏王哲方派王彩凤王琦杨锋
Owner WUHAN TEXTILE UNIV
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