Hydrotreating method for heavy hydrocarbon raw material by adopting up-flow reactor

A hydrotreating and reactor technology, applied in the treatment of hydrocarbon oil, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of catalyst bed disturbance, accelerated deactivation, easy to cause hot spots, etc.

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

In the upflow reactor, the activity of the catalyst in the upflow reactor gradually increases along the flow direction, and the hydrogen consumption and heat release of the high-activity catalyst bed gradually increase. The local lack of hydrogen in th...

Method used

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  • Hydrotreating method for heavy hydrocarbon raw material by adopting up-flow reactor
  • Hydrotreating method for heavy hydrocarbon raw material by adopting up-flow reactor
  • Hydrotreating method for heavy hydrocarbon raw material by adopting up-flow reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0063] 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%.

[0064] The above paste mass is pressed into two identical hemispheres with spherical cavities. Wherein, ...

Embodiment 2

[0068] The preparation process is as in Example 1, except that the curing agent hexamethylenetetramine is changed to add 97.2g urea, the amount of nickel nitrate hexahydrate is changed to add 62.5g, and the prepared catalyst carrier B and catalyst B C The properties are shown in Table 1.

[0069] Wherein, the outer diameter of the catalyst carrier B obtained is about 9.5mm, 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 9.5mm ; The lengths of the fourth channel, the fifth channel, the sixth channel and the seventh channel forming the square channel are all 7.2 mm, and the channel diameter is about 1.4 mm.

Embodiment 3

[0071] 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 catalyst carrier C and catalyst C C The properties are shown in Table 1.

[0072] 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 method for processing a heavy hydrocarbon raw material by adopting up-flow reactors. The method comprises the following steps: at least one up-flow reactor is adopted, at least two catalyst bed layers are arranged in each up-flow reactor, and each up-flow catalyst bed layer is filled with a hydrotreating catalyst; a carrier of the hydrotreating catalyst is spherical and 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, are communicated with one another and are perpendicular to one another in pairs, and the fourth channel, the fifth channel, the sixth channel and the seventh channel are connected end to end and communicated; thecatalyst bed layers of the up-flow reactor are arranged along the material flow direction, and the particle size of the hydrotreating catalyst of each bed layer is gradually reduced. Specific catalyst grading is adopted in the method, the method is suitable for the up-flow residual oil hydrotreatment process, and has the characteristics of high void ratio, strong capacity of removing metals, goodpermeability, reduced bed pressure and uniform material distribution.

Description

technical field [0001] The invention relates to a hydrogenation treatment technology for hydrocarbon raw materials, in particular to a method for hydrogenation treatment of heavy hydrocarbon raw materials by using an upflow reactor. 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 het...

Claims

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Application Information

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IPC IPC(8): C10G45/04B01J8/02B01J35/04B01J35/10B01J27/19
CPCC10G45/04B01J8/0278B01J8/0292B01J8/0242B01J8/04B01J8/0449B01J35/04B01J35/10B01J27/19C10G2300/202C10G2300/205C10G2300/206C10G2300/70C10G2300/1077C10G2300/107C10G2300/1037C10G2300/4006C10G2300/4012C10G2300/4018
Inventor 刘铁斌金建辉李洪广翁延博耿新国
Owner CHINA PETROLEUM & CHEM CORP
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