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A kind of vulcanizing agent and preparation method of hydrocracking catalyst

A hydrocracking and vulcanizing agent technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as the shortage of dimethyl disulfide, large environmental impact, and odor, and achieve Small environmental impact, low price, low volatility effect

Inactive Publication Date: 2016-11-09
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, while producing dimethyl disulfide, dimethyl polysulfide compounds are often produced, which has a foul smell and has a great impact on the environment
Due to the restriction of the production and use of dimethyl sulfate and the strong pungent odor produced in the production process of dimethyl disulfide, domestic and foreign manufacturers have stopped production one after another, so dimethyl disulfide is very scarce and expensive

Method used

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  • A kind of vulcanizing agent and preparation method of hydrocracking catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Under nitrogen protection, normal temperature and normal pressure, 75 parts by weight of carbon disulfide, 25 parts by weight of No. 260 solvent oil, 0.60 parts by weight of methyl tert-amyl ether, 0.15 parts by weight of 2,6-di-tert-butyl p- Cresol, 0.40 parts by weight of polyalpha-olefin, and 0.40 parts by weight of polyethylene glycol 400 are uniformly mixed under mild stirring to obtain a vulcanizing agent, with an autoignition point of 185-190°C, a freezing point of ≤-40°C, and a sulfur content of >62 %, oxygen content≤0.1%, specific gravity (d 4 20 ) 1.00-1.10, vapor pressure (37.8°C) 380-410 mmHg.

Embodiment 2

[0068] Under nitrogen protection, normal temperature and normal pressure, 75 parts by weight of carbon disulfide, 25 parts by weight of No. 260 solvent oil, 0.60 parts by weight of ethyl tert-butyl ether, 0.15 parts by weight of 2,6-di-tert-butyl p- Cresol, 0.40 parts by weight of polyalphaolefin, and polyethylene glycol 400 of 0.40 parts by weight are mixed uniformly under mild stirring to obtain a vulcanizing agent, with an autoignition point of 183-188°C, a freezing point≤-40°C, and a sulfur content of >62 %, oxygen content≤0.1%, specific gravity (d 4 20 ) 1.00-1.10, vapor pressure (37.8°C) 390-410 mmHg.

Embodiment 3

[0070] Under nitrogen protection and normal temperature and normal pressure, 75 parts by weight of carbon disulfide, 25 parts by weight of petroleum distillate oil at 200°C-280°C, 0.60 parts by weight of methyl tert-amyl ether, 0.15 parts by weight of 2,6-bis tert-butyl-p-cresol, 0.40 parts by weight of polyalpha-olefin, and 0.40 parts by weight of polyethylene glycol 400 are uniformly mixed under mild stirring to obtain a vulcanizing agent with an autoignition point of 183-186°C and a freezing point of ≤-40°C. Sulfur content > 62%, oxygen content ≤ 0.1%, specific gravity (d 4 20 ) 1.00-1.10, vapor pressure (37.8°C) 400-410 mmHg.

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Abstract

The invention belongs to the technical field of petroleum processing, and relates to a vulcanizing agent and a preparation method of a hydrocracking catalyst; the vulcanizing agent is composed of carbon disulfide, solvent oil or petroleum distillate oil, antioxidant, flame retardant, pour point depressant, dispersant composition. Under nitrogen protection, normal temperature and normal pressure, solvent oil, carbon disulfide, dispersant, pour point depressant, antioxidant, flame retardant and other substances are sequentially added under mild stirring to prepare a compound new vulcanizing agent containing carbon disulfide. The invention solves the problem of low spontaneous ignition point and strong volatility of the commonly used vulcanizing agent carbon disulfide, does not need a water seal when used, and is safe and simple to operate; can replace dimethyl disulfide, has no obvious smell, can significantly reduce the cost of vulcanizing agent, and is suitable for Promote apps.

Description

technical field [0001] The invention belongs to the technical field of petroleum processing, and mainly relates to a sulfurizing agent of a catalyst for hydrocracking and a preparation method thereof. Background technique [0002] With the increase of heavy crude oil, hydrocracking develops rapidly. Hydrocracking is essentially an organic combination of hydrogenation and catalytic cracking processes. On the one hand, it can convert heavy oil products into light oil products through cracking reactions, and on the other hand, it can prevent a large amount of coke from being generated like catalytic cracking. The impurities in the feedstock can be removed by hydrogenation to saturate the olefins. Therefore, hydrocracking has the outstanding advantages of high yield of light oil and good product quality. [0003] The hydrocracking chemical reaction is carried out with the aid of catalysts and certain temperature and pressure conditions. Catalyst plays a decisive role in the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/20
Inventor 沈国良宋育红徐铁军丛澜波陈远南佟庆杰王宇高冰
Owner SHENYANG POLYTECHNIC UNIV
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