Hydrodesulfurization catalyst system, sulfurized state hydrodesulfurization catalyst system and method for hydrodesulfurization of diesel oil

A hydrodesulfurization and catalyst technology, applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, etc., can solve complex, unfavorable catalyst regeneration, and catalyst preparation technology can not meet the requirements To achieve the effect of reducing coking speed, strengthening hydrodesulfurization and aromatics saturation capacity, and increasing the degree of sulfidation

Active Publication Date: 2018-03-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned filling method is relatively complicated in actual use, which is not conducive to the regeneration of the catalyst
However, with the stricter environmental protection standards and the decline in the quality of diesel raw materials, the existing catalyst preparation technology is gradually unable to meet the requirements

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0052] The preparation method of the oxidation state catalyst in the present invention is not particularly limited, and can be carried out in various ways known to those skilled in the art. For example, a catalyst including a carrier, an active metal oxide loaded on the carrier and optionally contained trace elements can be prepared according to a conventional method, and then organic alcohols are loaded on the catalyst by means of impregnation, spraying, etc. on the carrier, or first introduce the source of trace elements into the carrier, and then introduce the active metal precursor and organic alcohol into the carrier selectively containing trace elements. The specific process is well known to those skilled in the art and will not be repeated here. In addition, the loading method of the organic alcohols and the source of trace elements should ensure that the organic alcohols can be more uniformly dispersed in the catalyst carrier, and basically no agglomerated particles are...

Embodiment 1

[0109] Catalyst A1 and catalyst B1 were prepared by pore saturation impregnation method.

[0110] The organic alcohol contained in the catalyst A1 is ethylene glycol, the content of cobalt oxide is 5%, the content of molybdenum oxide is 21.5%, P 2 o 5 The content is 6%, and the molar ratio of ethylene glycol to cobalt is 1:1. The specific surface area of ​​alumina in catalyst A1 is 320m 2 / g, the average pore diameter is 8.5nm, and the pore volume with a pore diameter of 4nm-15nm accounts for 60% of the total pore volume.

[0111] The organic alcohol contained in the catalyst B1 is ethylene glycol, containing 5% of nickel oxide and 22% of molybdenum oxide, P 2 o 5 The content is 6%, and the molar ratio of ethylene glycol to nickel is 1:1. The specific surface area of ​​alumina in catalyst B is 240m 2 / g, the average pore diameter is 13nm, and the pore volume with a pore diameter of 8-20nm accounts for 72% of the total pore volume.

[0112] The catalyst A1 and catalyst B...

Embodiment 2

[0128] Catalyst A2 and Catalyst B2 were obtained by pore saturation impregnation method.

[0129] The organic alcohol contained in catalyst A2 is glycerol, the content of cobalt oxide is 4.0%, the content of molybdenum oxide is 18.0%, P 2 o 5 The content is 5.3%, and the molar ratio of glycerol to cobalt is 1:1. The specific surface area of ​​alumina is 300m 2 / g, the average pore diameter is 10nm, and the pore volume with a pore diameter of 4nm-15nm accounts for 70.5% of the total pore volume.

[0130] The organic alcohol contained in catalyst B2 is glycerol, nickel oxide 5.5%, molybdenum oxide content is 22.0%, P 2 o 5 The content is 6.0%, and the molar ratio of glycerol to nickel is 1:1. Catalyst B2 uses alumina with a specific surface area of ​​220m 2 / g, the average pore diameter is 14nm, and the pore volume with a pore diameter of 8nm-20nm accounts for 78.5% of the total pore volume.

[0131] Catalyst A2 is packed in the upper bed, catalyst B2 is packed in the low...

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Abstract

The invention provides a hydrodesulfurization catalyst system, a sulfided hydrodesulfurization catalyst system and a method for hydrodesulfurization of diesel oil by using the hydrodesulfurization catalyst system. The hydrodesulfurization catalyst system comprises a first catalyst bed and a second catalyst bed. A catalyst forming each catalyst bed contains a carrier and one or more organic alcohols and active metal components; the organic alcohols are hydroxyl-containing compounds with at least one exothermic peak at 200 to 400 DEG C; the average pore size of the first carrier forming the first catalyst bed is 6 to 15 nm; and the average pore size of the second carrier forming the second catalyst bed is 2 to 10 nm larger than the average pore size of first carrier. According to the hydrodesulfurization catalyst system and the hydrodesulfurization method for diesel oil in the invention, the process of sulfurization is carried out in the presence of specific organic alcohols, and an obtained sulfided hydrodesulfurization catalyst has high desulfurization activity, so hydrogenated diesel has the advantage of low sulfur.

Description

technical field [0001] The invention relates to a hydrogenation desulfurization catalyst system, a sulfurized state hydrogenation desulfurization catalyst system and a method for carrying out hydrodesulfurization of diesel oil using the hydrogenation desulfurization catalyst system. Background technique [0002] With the increasingly stringent environmental protection regulations, the quality requirements of diesel oil are becoming more and more stringent, and gradually develop towards ultra-low sulfur content (sulfur content is not higher than 10ppm). On the other hand, the proportion of low-quality crude oil is getting higher and higher, resulting in low-quality and diversified sources of diesel oil, which has caused enormous pressure on today's diesel hydrogenation units. The properties of different diesel hydrogenation raw materials are very different, such as sulfur content, sulfide type, nitrogen content, aromatics content, etc. may be significantly different. Moreove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/20B01J27/19B01J23/883B01J23/882B01J23/888C10G65/08
Inventor 陈文斌龙湘云王轶凡李明丰聂红李大东鞠雪艳
Owner CHINA PETROLEUM & CHEM CORP
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