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Pre-sulfurizing process of hydrogenating catalyst

A hydrogenation catalyst and catalyst technology, applied in the petroleum industry, refining hydrocarbon oil, etc., can solve the problems of complex steps, high crushing rate, and low crushing rate of hydrogenation catalysts, and achieve reduced crushing rate, high sulfur retention, and broken The effect of rate reduction

Inactive Publication Date: 2003-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing hydrogenation catalyst presulfidation method, such as high fragmentation rate and complicated steps, and provide a relatively simple hydrogenation catalyst presulfidation method with a low hydrogenation catalyst fragmentation rate after sulfidation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] This example illustrates the method provided by the invention.

[0028] (1) 200 grams of wax cracking olefins (product name is heavy mesh olefins, Beijing Yanshan Petrochemical Co., Ltd. chemical industry No. , the boiling point range is 254-382°C, and the specific gravity at 20°C is 0.8406 g / cm 3 , be 1 to calculate by the mol ratio of olefinic double bond and elemental sulfur, elemental sulfur consumption is 12.7 gram elemental sulfur / 100 gram wax cracking olefins, 200 gram olefins should be 25.4 gram sulfurs, add excessive elemental sulfur for making reaction completely. That is, 34 grams of powdered elemental sulfur and 6 grams of powdered tetramethylthiuram disulfide are mixed, and then the mixture is put into a three-necked bottle, and reacted at 180 ° C for 1 hour under stirring to obtain a solution containing sulfurized olefins, containing The sulfur content in the solution of sulfurized olefin was 15.0% by weight. Among them, 11.0% by weight of sulfur exists ...

example 2

[0039] This example illustrates the method provided by the invention.

[0040] The same catalyst is presulfided by the method of Example 1, the difference is that the temperature of the catalyst is 190°C under a nitrogen atmosphere to obtain catalyst C after sulfidation 2 . Catalyst C 2 The crushing ratio and sulfur content are listed in Table 1.

example 3

[0045] This example illustrates the method provided by the invention.

[0046]The same catalyst is carried out presulfurization by the method of example 1, and difference is only (1) add 37 gram powdery elemental sulfurs in the feed intake prepared by sulfurized olefin, do not add auxiliary agent, the consumption of elemental sulfur is respectively 4 grams in (2) After mixing with 7 grams of elemental sulfur and 26 grams of sulfurized olefin-containing solution, the heating temperature is 110°C and 120°C respectively. is 26.3% by weight and 33.0% by weight, the weight ratio of sulfur existing in elemental state to sulfur existing in sulfurized olefins is 2.8 and 4.2 respectively, when the solution of sulfurized olefins with elemental sulfur dissolved in it is mixed with the catalyst (i.e. impregnation process) , the temperature of the solution is 110°C and 120°C respectively, the temperature of the catalyst is also 110°C and 120°C respectively, and the heat treatment condition...

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Abstract

The pre-sulfurizing process of hydrogenating catalyst includes impregnating the hydrogenating catalyst in solution containing sulfurized olefin at room temp-220 deg.c for 0.5-5 hr, and heating catalyst in inert atmosphere. The solution containing sulfurizing olefin is in the temperature of room temperature to 220 deg.c and has dissolved S element, total S content of 4-40 wt% and the weight ratio between S in element state and S in sulfurized olefin of 0.5-7. The sulfurized hydrogenating catalyst contains S in 1-7.5 w. The pre-sulfurizing process of hydrogenating catalyst can lower its breaking rate greatly and raise the S retention degree.

Description

technical field [0001] The invention relates to a presulfurization method of a hydrogenation catalyst. Background technique [0002] CN1262305A discloses a method for presulfurization of a hydrogenation catalyst, which method comprises sublimation and / or melting, the catalyst is contacted with elemental sulfur, and the contact temperature makes the elemental sulfur basically enter the pores of the catalyst, The method also includes (1) mixing an olefin-containing component, elemental sulfur, and additives, and heating the mixture at 100-220° C. for more than 0.5 hours. Wherein the number of moles of elemental sulfur is not less than the number of moles of olefinic double bonds, the amount of auxiliary agent is 10-80% by weight of the amount of elemental sulfur, and the auxiliary agent is selected from one or several organic auxiliary agents used in rubber vulcanization. (2) impregnating the sulfur-containing olefin-containing catalyst obtained in (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/00
Inventor 于守智高晓冬陈若雷
Owner CHINA PETROLEUM & CHEM CORP
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