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Process of treating hydrogenation catalyst before application

A technology for hydrogenation catalysts and treatment methods, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of concentrated heat release, reduce catalyst self-heating, etc., and achieve no concentrated heat release , Solve the concentrated exothermic phenomenon, the effect of high catalyst performance

Active Publication Date: 2007-12-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

USP6077803 dissolves elemental sulfur and organic sulfur in a solvent, and at the same time introduces sulfur into Catalyst, but the disadvantage is that there is still a concentrated exothermic phenomenon during activation
CN1400056A Coat the presulfided catalyst containing vulcanizing agent with an 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 decompose the subsulfurized state The self-heating problem of the catalyst, and the storage, transportation and filling of the catalyst still have certain problems

Method used

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  • Process of treating hydrogenation catalyst before application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 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.

[0036] The specific pre-sulfurization process is as follows:

[0037] 1. Saturatedly impregnate citric acid aqueous solution (containing citric acid 20wt%) on the oxidized FH-5A catalyst, the amount of citric acid added is 9.6% of the catalyst weight, then dry at 110°C for 3 hours, evaporate the water, and obtain the loaded lemon acid catalyst.

[0038] 2. Introducing molten elemental sulfur into the citric acid-containing catalyst obtained in step 1, the amount of elemental sulfur introduced is 100% of the theoretical sulfur requirement of the catalyst. It is then mixed with coker diesel in an amount of 20% by weight of the catalyst.

[0039] 3. The catalyst obtained in step 2 was treated at 260° C. for 2 hours under normal pressure, nitrogen f...

Embodiment 2

[0041] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0042] The specific pre-sulfurization process is as follows:

[0043] 1. Uniformly impregnate triethylamine on the oxidized FH-5A catalyst, and the amount of triethylamine added is 7% of the catalyst weight to obtain a catalyst loaded with triethylamine.

[0044] 2. Dispersing the elemental sulfur in the solvent of catalytic cracking gasoline and rapeseed oil with a volume ratio of 7: 1, the solvent consumption is 20% of the catalyst weight, and the elemental sulfur consumption is 95% of the catalyst metal-containing theoretical sulfur requirement, and the dispersion The catalyst loaded with triethylamine obtained in step 1 was spray-impregnated with a solvent of elemental sulfur.

[0045] 3. The catalyst obtained in step 2 was treated at normal pressure, in a stagnant air atmosphere, and at 160° C. for 5 hours to obtain the final hydrotreating catalyst EPRES-2 containing a sulfurizing a...

Embodiment 3

[0051] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0052] The specific pre-sulfurization process is as follows:

[0053] 1. Dissolve triethylamine and gluconic acid in the ammonia water containing 8wt% of ammonia in a weight ratio of 4:1, impregnate the oxidized catalyst with the solution, the amount of the above substances is 10% of the catalyst weight, and then dry at 130 ° C for 4 hours, a catalyst containing mixed organic additives was obtained.

[0054] 2. Disperse the elemental sulfur in a solvent with a volume ratio of 1:2 between vacuum distillate oil and peanut oil. The amount of solvent used is 45% of the catalyst weight, and the amount of elemental sulfur is 90% of the theoretical sulfur content of the catalyst containing metals. The elemental sulfur is dispersed. The sulfur solvent is spray-soaked on the catalyst obtained in step 1 obtained in step 1.

[0055] 3. The catalyst obtained in step 2 was treated at normal pressure...

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Abstract

The process of treating hydrogenation catalyst before application includes making the hydrogenation catalyst in oxide state to support organic acid and/or organic nitrogen compound, organic solvent and element sulfur and treating in dynamic heating equipment. The hydrogenation catalyst with supported sulfur containing matter, such as element sulfur, has raised sulfur containing matter utilization rate, smooth temperature raising in the catalyst bed, raised catalyst activity and other features. The method of the present invention may be applied for various kinds of hydrogenation catalyst.

Description

technical field [0001] The invention relates to a treatment method before the hydrogenation catalyst is applied, in particular to a method for performing presulfidation treatment on other devices outside the reactor before the catalyst is used in the 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 3 S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/20B01J27/049C10G45/38
Inventor (要求不公开所有发明人姓名)
Owner CHINA PETROLEUM & CHEM CORP
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