Preparation method of organic vulcanizing agent for hydrogenation catalyst pre-vulcanizing

A technology of hydrogenation catalyst and vulcanizing agent, which is applied in the field of oil refining aids and sulfides with acyclic unsaturated carbon framework, can solve the problems of low conversion rate of raw materials, corrosiveness, low product yield, etc., and achieve high catalyst activity. Effect

Inactive Publication Date: 2015-11-11
ERDOS FLOURISHING FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dimethyl disulfide is still used in most domestic refineries due to its high sulfur content, good oil solubility and low price. However, dimethyl disulfide has a low flash point and has relatively strong irritating, suffocating odor and toxicity. , not convenient for production, transportation, storage and use
Dibutyl polysulfide has a high flash point, low odor, low toxicity, and good performance. In recent years, products have been put on the market abroad, such as Lubrizol's SZ-54 (sulfur content is 54%), etc., domestic Although there is a similar production technology of diisobutyl polysulfide (that is, isobutylene sulfur that people often say), its low sulfur content, unpleasant smell, and serious corrosion are generally only used as extreme pressure and antiwear agents for lubricating oils. How to develop a hydrogenation catalyst presulfidant with high sulfur content and low odor in a targeted manner to solve the problem of environmental protection in production has become a top priority
Dibutyl polysulfide generally adopts sulfur monochloride (S 2 Cl 2 ) and alkali metal (or alkali

Method used

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  • Preparation method of organic vulcanizing agent for hydrogenation catalyst pre-vulcanizing

Examples

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Example Embodiment

[0013] Example 1

[0014] Add 1200g of sulfur and 5g of catalyst into the autoclave, heat to 160℃, stir at constant temperature for 1 hour, then pump 1000g of isobutylene into the autoclave with a metering pump. After the isobutylene is introduced, the reactor pressure rises rapidly, 160℃ When the temperature reaches 3MPa or more, the isobutylene feed rate is controlled to ensure that the reaction pressure is between 3-6MPa, and the reaction is stirred at 160-170°C for 2 hours, then the temperature is lowered, the pressure is relieved, and filtered to obtain 2200g of additive product.

Example Embodiment

[0015] Example 2

[0016] Add 1200g of sulfur and 5g of catalyst into the autoclave, heat to 160°C, stir at constant temperature for 1 hour, then, as in Example 1, pump 1000g of 1-butene into the autoclave with a metering pump, and control the reaction pressure to 3 ~6MPa, 160~170℃, stirring and reacting for 2 hours, then cooling, releasing pressure and filtering to obtain 2200g of additive product.

Example Embodiment

[0017] Example 3

[0018] Add 1200g of sulfur and 5g of catalyst into the autoclave, heat to 160°C, stir at constant temperature for 1 hour, then, as in Example 1, pump 1000g of 2-butene into the autoclave with a metering pump, and control the reaction pressure to 3 ~6MPa, 160~170℃, stirring and reacting for 2 hours, then cooling, releasing pressure and filtering to obtain 2200g of additive product.

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Abstract

The present invention discloses a preparation method of an organic vulcanizing agent for hydrogenation catalyst pre-vulcanizing. According to the present invention, in the presence of a catalyst, isobutylene, 1-butene or 2-butene, or a mixture comprising two or three selected from isobutylene, 1-butene and 2-butene reacts with sulphur to produce the required additive product; the consumption of the catalyst used in the method is low, the catalyst can be dissolved in the product, the performance of the product during the subsequent use process is not affected, and the catalyst is not required to be separated from the product; and the preparation method has characteristics of simple process, high yield, low production cost and no production of dust, wastewater and waste residue, belongs to the environmentally friendly green process technology, and is easily subjected to industrialization promotion.

Description

technical field [0001] The invention belongs to the technical field of refining aids in fine chemical industry, in particular relates to a method for synthesizing an organic vulcanizing agent presulfurized by a hydrogenation catalyst, in particular to a method for preparing sulfide butene. It also belongs to the technical field of sulfides of acyclic unsaturated carbon frame. Background technique [0002] Hydrogenation catalysts are composed of active components in an oxidized state and a carrier. During use, the active components in an oxidized state can only be converted into sulfide forms to have higher activity. Therefore, the hydrogenation catalyst must be presulfurized with a presulfidation agent before use. The vulcanizing agent is easy to decompose during the pre-sulfurization process, and can provide sufficient sulfur to convert the metal oxides in the catalyst into metal sulfides. There are many types of vulcanizing agents, but the most common ones are some organ...

Claims

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Application Information

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IPC IPC(8): C07C319/24C07C319/14B01J37/20
Inventor 杨文光杨新文
Owner ERDOS FLOURISHING FINE CHEM
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