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Vulcanizing agent for hydrogenation catalyst and preparation method of vulcanizing agent

A hydrogenation catalyst and vulcanizing agent technology, applied in the direction of catalyst activation/preparation, hydrogenated polysulfide/polysulfide preparation, chemical instruments and methods, etc., can solve the problem of high toxicity of vulcanizing agent, high production cost, low safety, etc. problem, to achieve the effect of widening the decomposition temperature, high flash point and improving safety performance

Active Publication Date: 2018-06-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to overcome the problems of the existing vulcanizing agents such as high toxicity, high production cost, low safety, and difficult transportation, and provide a vulcanizing agent with simple ingredients, high sulfur content, and a wide range of decomposition temperatures. Broad, oil-soluble organic polysulfide vulcanizing agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 384g of elemental sulfur, 20g of aniline and 8g of 4A molecular sieve into the reactor, then seal the reactor and raise the temperature, add propylene into the reactor after the temperature rises to 140°C; measure the total mass of propylene with a mass flow meter. Along with the adding reaction of propylene, the pressure in the reactor constantly rises, when the pressure in the reactor reaches 30kg / cm 2 , open the vent valve of the reactor, release the gas in the reaction system, and keep the pressure in the reactor at 30kg / cm 2, keep the reaction state and react for 2 hours; after the reaction, cool the reactor to room temperature, take out the crude vulcanizing agent product in the reactor and flash evaporate it at 50°C and 10000pa for 1 hour to obtain the vulcanizing agent. The mass flow meter measures 310 g of the total mass of propylene, and the unreacted propylene is recovered and reused after cooling. The obtained vulcanizing agent had a linear sulfide co...

Embodiment 2

[0030] Weigh 384g of elemental sulfur, 35g of benzylamine and 15g of 4A molecular sieve into the reactor, then close the reactor and raise the temperature, when the temperature rises to 170°C, add 1-butene into the reactor; measure 1-butene by mass flow meter The total mass of butene. Along with the adding reaction of 1-butene, the pressure in the reactor constantly raises, when the pressure in the reactor reaches 25kg / cm 2 , open the vent valve of the reactor, release the gas in the reaction system, and keep the pressure in the reactor at 25kg / cm 2 , keep the reaction state and react for 4h; after the reaction, cool the reactor to room temperature, take out the crude vulcanizing agent product in the reactor and flash evaporate it for 1.5h under the conditions of 60°C and 8000pa to obtain the vulcanizing agent. A mass flow meter measures 700 g of the total mass of 1-butene, and the unreacted 1-butene is cooled and recovered for reuse. The obtained vulcanizing agent had a lin...

Embodiment 3

[0032] Weigh 384g of elemental sulfur, 15g of cyclohexylamine and 38g of 4A molecular sieve into the reactor, then close the reactor and raise the temperature. After the temperature rises to 200°C, add isobutene into the reactor; measure the total mass of isobutene with a mass flow meter. Along with the adding reaction of isobutylene, the pressure in the reactor constantly raises, when the pressure in the reactor reaches 20kg / cm 2 , open the vent valve of the reactor, release the gas in the reaction system, and keep the pressure in the reactor at 20kg / cm 2 , keep the reaction state and react for 6h; after the reaction, cool the reactor to room temperature, take out the crude vulcanizing agent product in the reactor and flash evaporate it for 2h at 45°C and 5000pa to obtain the vulcanizing agent. The mass flow meter measures the total mass of isobutene to be 220g, and the unreacted isobutene is recovered and reused after being cooled. The obtained vulcanizing agent had a linea...

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Abstract

The invention provides a vulcanizing agent for a hydrogenation catalyst and a preparation method of the vulcanizing agent. Sulfur content of the vulcanizing agent is 40wt%-80wt%, and the vulcanizing agent contains straight-chain polysulfide and cyclic polysulfide. The preparation method comprises steps as follows: elemental sulfur and a catalyst are weighed proportionally and added to a reactor, the reactor is closed and heated, and then olefins are added to the reactor; pressure in the reactor is increased continuously, when pressure in the reactor reaches a certain value, an air release valve of the reactor is opened, gas in the reaction system is released, pressure in the reactor is kept in a constant-value range, the reaction is performed for a period of time in the reaction state, andafter separation, the vulcanizing agent is obtained. The problems of higher toxicity, high production cost, low safety performance, difficulty in transportation and the like of an existing vulcanizing agent are solved, and the organic polysulfide vulcanizing agent which contains simple components and is high in sulfur content, wide in decomposition temperature range and good in oil solubility isprovided.

Description

technical field [0001] The invention belongs to the technical field of vulcanizing agents, and in particular relates to a vulcanizing agent for a hydrogenation catalyst and a preparation method thereof. Background technique [0002] The quality of oil products is closely related to the environment, and now crude oil is generally heavy, which contains a large amount of nitrogen, sulfur, oxygen and metals. In addition, most of the oil products in my country come from catalytic cracking and have high olefin content, which will inevitably affect the environment. If there are relatively large adverse effects, the use of catalytic hydrogenation technology can effectively reduce these hazards. Most industrial hydrogenation catalysts use molybdenum, cobalt, nickel, tungsten and other elements as active components, and they are attached to the carrier in an oxidized state. However, the catalysts in the oxidized state are not only low in activity but also poor in stability and easy to ...

Claims

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Application Information

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IPC IPC(8): B01J37/20C07B45/06C07C319/24C07C321/14C07D341/00
CPCB01J37/20C07B45/06C07C319/24C07C321/14C07D341/00
Inventor 杨超关明华尹泽群
Owner CHINA PETROLEUM & CHEM CORP
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