Hydrocarbon hydroprocessing technique

A technology of hydrogenation treatment and process method, which is applied in the direction of refining to remove heteroatoms, etc., can solve the problems that cannot completely solve the problem of self-heating of sulfide catalysts, and achieve the effect of being suitable for large-scale use, low production cost, and easy to store

Active Publication Date: 2008-03-26
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] 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] 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. Then triethanolamine is supported on the catalyst, the addition amount of triethanolamine is 1% of the weight of the catalyst, and finally impregnated with coked diesel oil fraction, and the amount of the coked diesel oil is 40% of the weight of the catalyst. A hydrorefining catalyst EPRES-1 finally containing a sulfurizing agent was obtained.

Embodiment 2

[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. 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.

[0042] 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 100% of the metal-containing theoretical sulfur required by the catalyst. The catalyst loaded with triethylamine obtained in step 1 is impregnated with elemental sulfur solvent. The final hydrorefining catalyst EPRES-2 containing a sulfurizing agent was obtained.

Embodiment 3

[0046] The catalyst in the oxidation state is the same as in Example 1, which is FH-5A.

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

[0048] 1. Dissolve triethylenetetramine in ammonia water containing 8wt% of ammonia, impregnate the oxidized catalyst with the solution, the amount of triethylenetetramine is 15% of the catalyst weight, and then dry at 130° C. for 4 hours to obtain a catalyst containing triethylenetetramine Tetramine catalyst.

[0049] 2, vacuum distillate oil and peanut oil volume ratio are 1: 2 miscible solvents, solvent consumption is 0.5% of catalyst weight, then mixes with elemental sulfur solid powder, elemental sulfur consumption is 90% of catalyzer metal-containing theoretical sulfur demand.

[0050] 3. The material obtained in step 2 was treated at 180° C. for 3 hours under normal pressure and in a stagnant air atmosphere to obtain a hydrorefining catalyst EPRES-3 finally containing a vulcanizing agent.

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PUM

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Abstract

The present invention relates to hydrocarbon hydrotreating process including the steps of loading catalyst into the reactor, activating, reaction, etc. The hydrotreating 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. The hydrotreating 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 hydrotreating process.

Description

technical field [0001] The invention relates to a hydrocarbon hydrogenation treatment process, in particular to a hydrocarbon hydrogenation treatment process for hydrocarbon raw materials such as impurity removal and upgrading. Background technique [0002] The hydrotreating process generally includes hydrofining and hydroupgrading processes. Generally, in the presence of hydrogen, using a suitable reactor form, under certain operating conditions, the hydrocarbon feedstock and hydrogen are contacted with the hydrotreating catalyst. . Hydrotreating catalysts generally use refractory oxides such as alumina, silicon aluminum, and molecular sieves as carriers, and one or more active metal components such as molybdenum, tungsten, cobalt, and nickel, and sometimes phosphorus, silicon, etc. , fluorine, titanium, zirconium, boron and other auxiliary components. Generally, the metal component of the catalyst obtained in the production process exists in an oxidized state, while in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04
Inventor 高玉兰方向晨王刚曹凤兰李崇慧
Owner CHINA PETROLEUM & CHEM CORP
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