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Hydrocarbons hydrocracking technique

A technology of hydrocracking and process method, which is applied in the field of hydrocracking process for cracking heavy hydrocarbon raw materials into light products, which can solve the problems that cannot completely solve the problem of self-heating of sulfided catalysts, etc., and is suitable for large-scale use , Low production cost, and the effect of improving the vulcanization effect

Active Publication Date: 2010-10-27
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Commercial hydrocracking catalyst 3976 (developed by Fushun Petrochemical Research Institute, produced by Fushun Petrochemical Company Catalyst Factory), the main properties are shown in Table 1.

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

[0037] The molten elemental sulfur is introduced into the oxidation state catalyst, and the amount of elemental sulfur introduced is 115% of the theoretical sulfur requirement of the catalyst. Then triethanolamine is supported on the catalyst, the addition amount of triethanolamine is 2% of the weight of the catalyst, and finally impregnated with coked diesel oil fraction, the amount of the coked diesel oil is 30% of the weight of the catalyst. Then treat for 5 hours under normal pressure, 180°C, and no air flow. The final hydrocracking catalyst EPRES-1 containing sulfurizing agent was obtained.

Embodiment 2

[0039] The oxidation state catalyst is the same as Example 1, which is 3976.

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

[0041] 1. Uniformly impregnate triethylamine on the oxidized state 3976 catalyst, and the amount of triethylamine added is 5% of the catalyst weight to obtain a catalyst loaded with triethylamine.

[0042] 2. Disperse elemental sulfur in a solvent with a volume ratio of catalytic cracking gasoline and rapeseed oil of 6:1. The amount of solvent is 12% of the weight of the catalyst, 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 is impregnated with elemental sulfur solvent. The final hydrocracking catalyst EPRES-2 containing sulfurizing agent was obtained.

Embodiment 3

[0046] The oxidation state catalyst is the same as Example 1, which is 3976.

[0047] The specific pre-sulfurization process is as follows:

[0048] 1. Dissolve triethylenetetramine in ammonia water containing 10wt% of ammonia, impregnate the oxidized catalyst with the solution, the amount of triethylenetetramine is 17% of the catalyst weight, and then dry at 120°C for 5 hours to obtain a catalyst containing triethylenetetramine Tetramine catalyst.

[0049] 2. A mixed solvent of vacuum distillate oil and peanut oil with a volume ratio of 1:4. The amount of solvent is 0.5% of the weight of the catalyst, and then mixed with elemental sulfur solid powder. The amount of elemental sulfur is 90% of the theoretical sulfur requirement of the catalyst containing metal.

[0050] 3. The material obtained in step 2 was treated at 190° C. for 3 hours under normal pressure and in a stagnant air atmosphere to obtain the final hydrocracking catalyst EPRES-3 containing a sulfurizing agent.

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Abstract

The present invention relates to hydrocarbon hydrocracking process including the steps of loading catalyst into the reactor, activating, reaction, etc. The hydrocracking catalyst contains organic nitrogen compound in 0.5-20 wt% of the catalyst, simple substance sulfur in the amount of 30-150 % of the theoretical sulfur demand of the catalyst, and organic solvent in 0.1-50 wt% of the catalyst. Thehydrocracking catalyst with the common action of organic nitrogen compound, sulfur and organic solvent has high sulfur holding rate in activation, less concentrated heat release, lowered temperature rise in the catalyst bed and high activity. It may be applied in various kinds of hydrocarbon hydrocracking process.

Description

technical field [0001] The invention relates to a hydrocarbon hydrocracking process, in particular to a hydrocracking process for cracking heavy hydrocarbon raw materials into light products. Background technique [0002] Hydrocracking process refers to a reaction process in which heavy hydrocarbons with heavy molecules are cracked into hydrocarbons with small molecules in the presence of heavy hydrocarbon feedstock hydrocracking catalysts and hydrogen, and hydrogenation is carried out at the same time. The hydrocracking catalyst is a dual-functional catalyst with both cracking activity and hydrogenation activity. The cracking activity is generally provided by catalytic materials with acidic centers, and the hydrogenation activity is generally provided by VIB and VIII metals. Catalytic materials with acidic centers are generally provided by molecular sieves, acidic silica-alumina, acidic clay, etc. Group VIB and Group VIII metals are generally one or more of molybdenum, tun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G47/06
Inventor 高玉兰方向晨王刚曹凤兰李崇慧
Owner CHINA PETROLEUM & CHEM CORP
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