Processing method before applying hydrogenation catalyst

A technology for hydrogenation catalysts and treatment methods, applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of reducing catalyst self-heating and not completely solving the problem of sulfided catalysts Self-heating problem and other problems, to achieve the effect of improving vulcanization effect, reducing sulfur loss, and improving performance

Active Publication Date: 2010-06-09
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, introduce elemental sulfur and organic polysulfide into catalyst, then activate with hydrogen, passivate 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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  • Processing method before applying hydrogenation catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 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.

[0026] The specific pre-sulfurization process is as follows:

[0027] 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.

[0028] 2. The catalyst obtained in step 1 was treated under normal pressure and in the presence of water vapor at 160°C for 7 hours, the temperature of the water vapor introduced was 110°C, and 1kg of steam was passed per 100kg of catalyst to obtain the final hydrorefining catalyst containing sulfiding agent EPRES-1.

Embodiment 2

[0030] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0031] The specific pre-sulfurization process is as follows:

[0032] 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.

[0033] 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.

[0034] 3. The catalyst obtained in step 2 is treated at 160°C for 2 hours under normal pressure and in the presence of water vapor, and then treated at 230°C for 4 hours. Hydrofining catalyst EPRES-2.

Embodiment 3

[0038] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

[0039] The specific pre-sulfurization process is as follows:

[0040] 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.

[0041] 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.

[0042] 3. The material obtained in step 2 is treated at 110°C for 15 hours and at 160°C for 10 hours under normal pressure and in the presence of water vapor. Hydrofining catalyst EPRES-3.

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Abstract

The invention relates to a processing method before the application of hydrogenation catalyst, comprising the detailed process as follows: organic solvent and elemental sulfur are introduced in hydrogenation catalyst in oxidation state; subsequently, heating pre-processing is carried out under a certain condition; and the heating processing is carried out under the existence of water vapor. The processing method before the application of the hydrogenation catalyst loads the sulfur-contained matter such as elemental sulfur on the hydrogenation catalyst; a certain interaction is generated and little heat is discharged; and the added water vapor adjusts the interaction of the sulfur and the active composition of the catalyst, and improves the use performance of the catalyst. Compared with theprior art, the catalyst obtained by the method has the advantages of high utilization ratio of the sulfur-contained matter, gradual increment of the temperature of the catalyst bed and high activityof the catalyst when the activation is applied. The method can be used for processing before the application of various hydrogenation catalysts.

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 for 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 Patents(China)
IPC IPC(8): B01J23/24B01J23/74B01J37/20C10G45/04
Inventor 高玉兰曹凤兰李崇慧陈光徐黎明
Owner CHINA PETROLEUM & CHEM CORP
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