Treatment method before application of hydrogenation catalyst

A hydrogenation catalyst and treatment method technology, which is applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problem of self-heating of sulfided catalysts, and reduce the self-heating of catalysts. To achieve the effect of being beneficial to activation and application, slowing down the phenomenon of concentrated heat release, and alleviating the effect of concentrated heat release

Active Publication Date: 2006-11-15
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 for a period of time above 175 ° C, and then activate it with hydrogen to reduce the self-heating of the catalyst, but it cannot completely solve the problem of sulfide catalyst There are still some problems in the storage, transportation and loading of the catalyst.
USP6059956 (CN1076635C) is used to contain olefin or olefin cut fraction such as under the presence of vegetable oil, introduces elemental sulfur and organic polysulfide into catalyst, then activates with hydrogen, passivates with oxygen-containing gas at last, although this method can improve catalyst activity, but Since the metal on the catalyst is in a sulfide state, the same problem as above still exists

Method used

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  • Treatment method before application of hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 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.

[0027] The specific pre-sulfurization process is as follows:

[0028] 1. The molten elemental sulfur is introduced into the oxidation state catalyst, and the amount of elemental sulfur introduced is 105% of the theoretical sulfur requirement of the catalyst. It was then impregnated with a coker diesel fraction in an amount of 45% by weight of the catalyst.

[0029] 2. The catalyst obtained in step 1 was treated at normal pressure, nitrogen flow atmosphere (nitrogen gas volume 25L / L catalyst hour), 150°C for 4 hours, and 260°C for 2 hours to obtain the final hydrorefining catalyst EPRES containing sulfide -1.

Embodiment 2

[0031] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0032] The specific pre-sulfurization process is as follows:

[0033] 1. Uniformly impregnate triethylamine on the oxidized FH-5A catalyst, and the addition amount of triethylamine is 5% of the catalyst weight to obtain a catalyst loaded with triethylamine.

[0034] 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 15% of the catalyst weight, and the amount of elemental sulfur is 105% of the theoretical sulfur content of the catalyst containing metal. The catalyst loaded with triethylamine obtained in step 1 was spray-impregnated with a solvent of elemental sulfur.

[0035] 3. The catalyst obtained in step 2 was treated at normal pressure, in a stagnant air atmosphere, at 160° C. for 2 hours, and at 230° C. for 4, to obtain the final hydrotreating catalyst EPRES-2 containing a sulfurizing a...

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 triethylamine and gluconic acid in 4:1 by weight ratio in ammonia water containing 8wt% ammonia, impregnate the oxidized catalyst with the solution, the amount of the above substances is 15% of the catalyst weight, and then dry at 130°C for 4 hours, a catalyst containing mixed organic additives was obtained.

[0042] 2, vacuum distillate oil and peanut oil volume ratio are 1: 2 miscible solvent, solvent consumption is 0.5% of catalyst weight, then mixes with elemental sulfur solid powder, and elemental sulfur consumption is 90% of catalyst metal-containing theoretical sulfur requirement.

[0043] 3. The material obtained in step 2 was treated at 110° C. for 15 hours and 160° C. for 10 hours at normal pressure and in a stagnant air atmosphere to obtain the final hydrotreating catalyst EPRES-3 containing a su...

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Abstract

A process for treating the hydrocatalyst before it is used features that the organic solvent and sulfur-contained substance are introduced to the oxidation-state hydrocatalyst for higher activity.

Description

technical field [0001] The invention relates to a treatment method before application of a hydrogenation catalyst, in particular to a treatment method for introducing elemental sulfur into other devices outside the reactor before the catalyst is used in hydrogenation reaction. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/20C10G45/04
Inventor (发明人要求不公开姓名)
Owner CHINA PETROLEUM & CHEM CORP
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