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Sulfurized type catalyst, and its preparation method

A technology of hydrogenation catalyst and tetraethylthiuram disulfide, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the unfavorable industrial application of catalysts, and can not completely solve the problem of sulfided catalysts Problems such as self-heating and low catalyst production efficiency can shorten the vulcanization time, be suitable for large-scale use, and improve the vulcanization effect.

Active Publication Date: 2008-08-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1400056A Coat the pre-sulfurized catalyst containing sulfidation agent with oxygen-containing organic matter containing at least 16 carbon atoms, treat it above 175°C for a period of time, and then activate it with hydrogen to reduce the self-heating problem of the catalyst, but it cannot completely solve the sulfidation state The self-heating problem of the catalyst, and the storage, transportation and loading of the catalyst still have certain problems
In the above-mentioned patents, either the self-heating problem of the catalyst, or the storage, transportation and loading of the catalyst still have certain problems, and there is a problem of low production efficiency in the production of the catalyst, which is not conducive to the industrial application of this type of catalyst

Method used

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  • Sulfurized type catalyst, and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The commercial hydrodesulfurization catalyst FH-5A (developed by Fushun Petrochemical Research Institute and produced by Wenzhou Huahua Group Co., Ltd.) was selected. The main composition and properties are shown in Table 1.

[0029] The specific pre-sulfurization process is as follows:

[0030] The molten elemental sulfur is introduced into the oxidation state catalyst, and the introduced amount of the elemental sulfur is 105% of the theoretical sulfur requirement of the catalyst. Then tetrabutylthiuram disulfide (TBTD) was mixed with coked diesel oil, and the mixture was introduced into the catalyst containing elemental sulfur. The amount of TBTD was 3% by weight of the catalyst, and the amount of coked diesel oil was 40% by weight of the catalyst. Finally, it was treated at 160° C. for 5 hours under normal pressure and in a stagnant air atmosphere to obtain the hydrorefining catalyst EPRES-1 finally containing a sulfurizing agent.

Embodiment 2

[0032] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0033] The specific pre-sulfurization process is as follows:

[0034] 1. Dissolving tetramethylthiuram disulfide (TMTD) in benzene, evenly impregnating it on the oxidized state FH-5A catalyst, the addition of TMTD is 5% of the weight of the catalyst, to obtain a catalyst supporting TMTD.

[0035] 2. Dispersing the elemental sulfur in a solvent with a volume ratio of catalytic cracking gasoline and rapeseed oil of 8:1, the amount of solvent is 12% of the catalyst weight, and the amount of elemental sulfur is 90% of the theoretical sulfur content of the catalyst containing metal. The elemental sulfur solvent impregnates the TMTD-supported catalyst obtained in step 1. The final hydrorefining catalyst EPRES-2 containing a sulfurizing agent was obtained.

Embodiment 3

[0039] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0040] The specific pre-sulfurization process is as follows:

[0041] 1. Dissolve dithiodimethyldiphenylthiuram in acetone and introduce it into the catalyst in an oxidized state. The amount of dithiodimethyldiphenylthiuram is 20% of the catalyst weight, and then at 105°C Under treatment for 3 hours, a catalyst containing dithiodimethyldiphenylthiuram was obtained.

[0042] 2. The volume ratio of vacuum distillate oil and peanut oil is a miscible solvent of 1: 2. The solvent consumption is 0.5% of the catalyst weight, and then mixed with the elemental sulfur solid powder. The elemental sulfur consumption is 40% of the metal-containing theoretical sulfur requirement of the catalyst.

[0043] 3. The material obtained in step 2 was treated at 180° C. for 3 hours under normal pressure and in a stagnant air atmosphere to obtain a hydrorefining catalyst EPRES-3 finally containing a vulcanizing...

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Abstract

A sulfurizing catalyst is a composite hydrocatalyst, which is prepared by proportionally introducing the thiouram type substance, sulfur and organic solvent to the oxidation-state hydrocatalyst.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a hydrogenation catalyst composition containing a vulcanizing agent after an external presulfidation treatment and a preparation method thereof. Background technique [0002] Hydrofining, hydrotreating, hydrocracking and other hydrogenation catalysts generally use alumina, silicon aluminum, molecular sieve and other refractory oxides as carriers, and one or more active metal groups such as molybdenum, tungsten, cobalt, nickel, etc. Sometimes, the catalyst can also contain auxiliary components such as phosphorus, silicon, fluorine, titanium, zirconium, and boron. Generally, the metal component of the catalyst obtained in the production process exists in an oxidized state, while in the hydrogenation reaction process, the active metal component of the catalyst is in a sulfide state (the metal exists in the form of sulfide: Co 9 S 8 、MoS 2 、Ni 3 S 2 、W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/20C10G45/04
Inventor 不公布所有发明人姓名
Owner CHINA PETROLEUM & CHEM CORP
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