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Hydrotreating method of heavy hydrocarbon raw material

A hydrogenation treatment and raw material technology, which is applied in the hydrogenation treatment of residual oil raw materials and heavy oil field, can solve the problems of low demetallization ability, unfavorable catalyst performance and long-term operation, so as to reduce poisoning, reduce the impact of deactivation, and improve the overall performance effect

Inactive Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the loading of catalysts with various properties, the overall demetallization ability is low, and there is also the problem of matching the catalyst performance of the subsequent downflow reactor, which is not conducive to the performance of the catalyst performance and long-term operation.

Method used

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  • Hydrotreating method of heavy hydrocarbon raw material
  • Hydrotreating method of heavy hydrocarbon raw material
  • Hydrotreating method of heavy hydrocarbon raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Preparation of upflow hydrogenation catalyst:

[0071] Taking by weighing silicon oxide content is the water glass 1071g of 28wt% and adds in the beaker, start stirring device, slowly add mass concentration in the beaker and be the nitric acid solution 370g of 65%, the pH value of water glass solution in the beaker after stirring and dissolving is 2.0, then Add 93.14g of nickel nitrate hexahydrate, dissolve and then add 585g of aluminum sol (the properties are as follows: the Al / Cl ratio is 1.40, the alumina content is 28wt%) and γ-Al 2 o 3 163.8g (the properties are as follows: the pore volume is 1.098mL / g, the specific surface area is 302m 2 / g), stir well and then add curing agent 93.6g hexamethylenetetramine, add deionized water after the hexamethylenetetramine is completely dissolved, so that the material in the beaker is a paste with certain fluidity, and The solids content based on silica and alumina was 33%.

[0072] The above paste mass is pressed into two i...

Embodiment 2

[0076] The preparation process is as in Example 1, except that the curing agent hexamethylenetetramine is changed to 97.2 g of urea, the amount of nickel nitrate hexahydrate is changed to 62.5 g, and the hydrogenation catalyst carrier B and hydrogenation catalyst B prepared are C The properties are shown in Table 1.

[0077] Wherein, the outer diameter of the catalyst carrier B obtained is about 5.5mm, the through-hole diameter of the first passage, the second passage and the third passage is about 1.5mm, and the length of the first passage, the second passage and the third passage is 5.5mm ; The lengths of the fourth channel, the fifth channel, the sixth channel and the seventh channel forming the square channel are all 4.2 mm, and the channel diameter is about 0.8 mm.

Embodiment 3

[0079] The preparation process is as in Example 1, except that the mold is replaced, the diameter of the cavity and the cylinder is increased, and the prepared hydrogenation catalyst carrier C and hydrogenation catalyst C C The properties are shown in Table 1.

[0080] Wherein, the outer diameter of gained catalyst carrier C is about 7.5mm, and the through hole diameter of the first passage, the second passage and the third passage is about 2.6mm, and the length of the first passage, the second passage and the third passage is 7.5mm , the lengths of the fourth channel, the fifth channel, the sixth channel and the seventh channel forming the square channel are all 6 mm, and the channel diameter is about 1.3 mm.

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Abstract

The invention discloses a hydrotreating method of a heavy hydrocarbon raw material. The method comprises the following steps: at least one up-flow reactor and at least one down-flow fixed bed reactorare connected in series, a heavy hydrocarbon raw material is sequentially enable to pass through the up-flow reactor and the down-flow fixed bed reactor, and effluent of the down-flow fixed bed reactor is separated to obtain products; wherein the up-flow reactor is at least filled with a hydrotreating catalyst provided by the invention, a hydrotreating catalyst carrier at least comprises seven channels penetrating through the carrier; the first channel, the second channel and the third channel penetrate through the sphere center of the catalyst carrier and are communicated with one another, every two channels are perpendicular to each other, the fourth channel, the fifth channel, the sixth channel and the seventh channel are connected end to end and communicated, and the total volume of the channels accounts for 20%-60% of the volume of the spherical carrier. According to the method, the overall performance of the catalyst can be improved, the catalytic performance synchronization of the up-flow catalyst and the fixed bed catalyst is realized, the catalytic activity is improved, and the operation period is prolonged.

Description

technical field [0001] The invention relates to a hydrogenation treatment method for heavy hydrocarbon raw materials, in particular to a hydrogenation treatment method for heavy oil and residual oil raw materials. Background technique [0002] As crude oil becomes heavier and worse, more and more heavy oil and residual oil need to be processed. The processing of heavy oil and residual oil not only needs to be cracked into products with low boiling points, such as naphtha, middle distillate oil and vacuum gas oil, but also to increase their hydrogen-carbon ratio, which requires decarbonization or Hydrogenation method to achieve. Among them, the decarbonization process includes coking, solvent deasphalting, heavy oil catalytic cracking, etc.; the hydrogenation process includes hydrocracking, hydrofining, hydrotreating, etc. The hydrogenation process can not only hydrogenate and convert residual oil, improve the yield of liquid products, but also remove heteroatoms in it, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04B01J8/04
CPCC10G65/04B01J8/0449B01J8/0492C10G2300/202
Inventor 刘铁斌耿新国袁胜华李洪广翁延博金建辉
Owner CHINA PETROLEUM & CHEM CORP
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