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A kind of method for preparing environment-friendly naphthenic rubber oil

A naphthenic rubber oil, environment-friendly technology, applied in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc., can solve the problem of unavailability of extracts containing polycyclic aromatic hydrocarbons, low utilization rate of naphthenic raw materials, and poor Aromatic oil is not effectively utilized and other problems, to achieve the effect of low aromatic content, low cost and high utilization rate of raw materials

Active Publication Date: 2020-04-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the vacuum distillate oil of naphthenic crude oil is directly subjected to two solvent extractions or the method of low-pressure hydrogenation and then two extractions is used to produce environment-friendly rubber filler oil, which inevitably produces a large amount of The extraction of polycyclic aromatic hydrocarbons cannot be used, resulting in low yields of aromatic oils that meet environmental protection requirements
On the other hand, the aromatic-poor oil produced in the extraction process is not effectively utilized, resulting in low utilization of naphthenic raw materials

Method used

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  • A kind of method for preparing environment-friendly naphthenic rubber oil
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Experimental program
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Effect test

Embodiment approach

[0045] Specific implementation of hydrogenation pre-refining treatment conditions 1: Hydrogen partial pressure is 12.0MPa, reaction temperature is 360°C, and feed space velocity is 0.8h -1 , The volume ratio of hydrogen to oil is 400:1.

[0046] Specific implementation method 2 of hydrogenation pre-refining treatment conditions: hydrogen partial pressure is 14.0MPa, reaction temperature is 340°C, and feed space velocity is 1.0h -1 , The volume ratio of hydrogen to oil is 360:1.

[0047] Specific implementation method 3 of hydrogenation pre-refining treatment conditions: hydrogen partial pressure is 16.0MPa, reaction temperature is 320°C, and feed space velocity is 1.2h -1 , The volume ratio of hydrogen to oil is 240:1.

[0048] Preferably, the freezing point of the naphthenic vacuum wax oil is <25°C, and the wax content is ≤5% by weight; more preferably, the freezing point of the naphthenic vacuum wax oil is <20°C, and the wax content is ≤3 % by weight, total aromatics cont...

specific Embodiment approach 2

[0051] Specific implementation mode 2 of naphthenic vacuum wax oil: the distillation range of the naphthenic vacuum wax oil of the present invention is 350-520°C, the freezing point is -8°C, the wax content is <3% by weight, and the total aromatics content is was 39%.

[0052] Specific implementation mode 3 of naphthenic vacuum wax oil: the distillation range of the naphthenic vacuum wax oil of the present invention is 373~568°C, the freezing point is 7°C, the wax content<5% by weight, and the total aromatic content is 54%.

[0053] Preferably, in step 2), the conditions of the vacuum stripping are controlled so that the flash point of the obtained degassed hydrogenated wax oil is above 200°C. The stripping medium of the vacuum stripping can be superheated steam.

[0054] Preferably, in step 3), the conditions of the solvent extraction and separation are controlled so that the dry weight of the extracted liquid is 1 to 12% by weight of the degassed hydrogenated wax oil; more...

Embodiment approach 1

[0061] Preferred embodiment 1: The extracted liquid obtained in step 3) is subjected to solvent removal treatment to obtain extracted oil, and the extracted oil is used as an asphalt improver for blending asphalt and the like.

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Abstract

The invention relates to the field of processing of petroleum products and discloses a method for preparing environment-friendly naphthenic rubber oil. The method comprises steps as follows: 1), naphthenic vacuum gas oil is subjected to hydro-prerefining treatment in the presence of a hydrorefining catalyst, and pre-refined hydrogenated gas oil is obtained; 2), the pre-refined hydrogenated gas oilis subjected to reduced-pressure steam stripping, and degassed hydrogenated gas oil is obtained; 3), the degassed hydrogenated gas oil is subjected to solvent extraction and separation, and raffinateand extract are obtained; 4), the raffinate is subjected to solvent removing treatment, and the environment-friendly naphthenic rubber oil is obtained. The method for preparing the environment-friendly naphthenic rubber oil has the advantages of being high in yield and high in raw material utilization rate and meeting the environmental protection index requirement, besides, the method is short intechnological process, simple to operate and lower in cost, and the environment-friendly naphthenic rubber oil prepared with the method is excellent in quality and has higher aromatic content and good compatibility with tire rubber.

Description

technical field [0001] The invention relates to the field of petroleum product processing, in particular to a method for preparing environment-friendly naphthenic rubber oil. Background technique [0002] Rubber extender oil is an important auxiliary agent in rubber production or processing. It is a type of aromatic oil, and its main function is to improve the physical and mechanical properties and processing properties of rubber products. Because rubber extender oil has good compatibility with rubber, the extender oil used in black rubber and tire rubber is generally aromatic oil, which contains a large amount of polycyclic aromatic hydrocarbons, of which benzopyrene is carcinogenic. With the improvement of environmental awareness, people pay more and more attention to environmental and health issues. Eight of the highly carcinogenic polycyclic aromatic hydrocarbons (including benzo[a]pyrene, benzo[e]pyrene, benzo[a]anthracene, chrysene, benzo[b]fluoranthene, etc. , benzo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2300/201
Inventor 郭庆洲王鲁强高杰李洪辉李洪宝牛传峰
Owner CHINA PETROLEUM & CHEM CORP
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