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Hydrocracking catalyst

A hydrocracking and catalyst technology, applied in the field of oil hydrogenation, can solve the problems of difficult control, cumbersome catalyst preparation process, and high catalyst preparation cost, so as to reduce operational risks, improve hydrogenation activity, improve hydrogenolysis activity and The effect of chain scission activity

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention patent is mainly to improve the hydrogenation activity and nitrogen poisoning resistance of the catalyst by regulating the acidity and hydrogenation activity of the catalyst, but the preparation process of the catalyst is too cumbersome, and the control of each process is difficult, and the catalyst preparation cost is high

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) The ammonium heptamolybdate solution was impregnated into Y-type molecular sieves, then ultrasonically treated at room temperature for 3 hours, then dried at 150°C for 4 hours, calcined at 400°C for 5 hours, and then treated with 1.5%H 2 The hydrogen of S is vulcanized, the vulcanization temperature is 320°C, the vulcanization pressure is 3.2MPa, the vulcanization time is 4h, and then in N 2 The atmosphere is lowered to room temperature to obtain a modified molecular sieve.

[0039] (2) Mix the modified molecular sieve prepared in step (1) with alumina powder, nitric acid, starch, and deionized water evenly, wherein the mass ratio of modified molecular sieve: alumina powder: nitric acid: starch: deionized water is 5: 95: 4:3:60, then kneading, extrusion molding, and then in N 2 Dry at 90°C for 10 hours in the atmosphere, and bake at 550°C for 3 hours to obtain a modified alumina carrier, in which the content of Y-type molecular sieve is 5%.

[0040] (3) Impregnate...

Embodiment 2

[0043] (1) Immerse ammonium heptamolybdate solution into Y-type molecular sieves, then ultrasonically treat at room temperature for 3 hours, then dry at 120°C for 6 hours, bake at 450°C for 3 hours, and then use 1.5%H 2 The hydrogen of S is vulcanized, the vulcanization temperature is 340°C, the vulcanization pressure is 3.6MPa, the vulcanization time is 4h, and then in N 2 The atmosphere is lowered to room temperature to obtain a modified molecular sieve.

[0044] (2) Mix the modified molecular sieve prepared in step (1) with alumina powder, nitric acid, starch, and deionized water evenly, wherein the mass ratio of modified molecular sieve: alumina powder: nitric acid: starch: deionized water is 10: 90: 4:3:50, then kneading, extrusion molding, and then in N 2 Dry at 90°C for 10 hours in the atmosphere, and bake at 600°C for 3 hours to obtain a modified alumina carrier, in which the content of Y-type molecular sieve is 10%.

[0045] (3) Immerse an equal volume of nickel nit...

Embodiment 3

[0048] (1) Immerse the ammonium metatungstate solution into Y-type molecular sieves, then ultrasonically treat at room temperature for 3 hours, then dry at 130°C for 5 hours, bake at 350°C for 3 hours, and then use 1.5%H 2 The hydrogen of S is vulcanized, the vulcanization temperature is 340°C, the vulcanization pressure is 4.0MPa, the vulcanization time is 4h, and then in N 2 The atmosphere is lowered to room temperature to obtain a modified molecular sieve.

[0049] (2) Mix the modified molecular sieve prepared in step (1) with alumina powder, nitric acid, starch, and deionized water evenly, wherein the mass ratio of modified molecular sieve: alumina powder: nitric acid: starch: deionized water is 15: 85: 4:3:50, then kneading, extrusion molding, and then in N 2 Dry at 90°C for 10 hours in the atmosphere, and bake at 600°C for 3 hours to obtain a modified alumina carrier, in which the content of Y-type molecular sieve is 15%.

[0050] (3) Immerse an equal volume of nickel ...

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Abstract

The hydrocracking catalyst comprises a carrier and active components, the carrier is a mixture of a molecular sieve and alumina, the total weight of the carrier is 5-25wt%, the active components are VIB-group metal sulfide and VIII-group metal oxide, the total weight of the catalyst is 2-30wt% of the VIB-group metal sulfide in terms of sulfide, the content of the VIII-group metal oxide in terms of sulfide is 2-30wt%, and the content of the molecular sieve in terms of sulfide is 5-25wt%. And the content of the VIII group metal oxide is 2-10% in terms of oxide. The catalyst is prepared by loading VIB group metal on a molecular sieve, vulcanizing, mixing with aluminum oxide to obtain a carrier, and loading VIII group metal. According to the present invention, the VIB group metal is subjected to sulfuration treatment, and then the VIII group metal is impregnated so as to sulfurize the difficultly sulfurized VIB group metal, such that the sulfuration degree of the VIB group metal is improved, the sulfuration temperature of the whole catalyst is reduced, and the dispersity of the VIII group metal is improved so as to improve the hydrogenation activity of the catalyst and improve the quality of the tail oil.

Description

technical field [0001] The invention relates to the technical field of hydrogenation of oil products, in particular to a hydrocracking catalyst and a preparation method thereof. Background technique [0002] There is a serious shortage of ethylene raw materials in my country. In my country, the raw material for ethylene cracking mainly comes from naphtha. In order to increase the naphtha production, the naphtha output of the hydrocracking unit can be increased by adjusting the hydrocracking catalyst. [0003] CN105413741A discloses a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst includes a carrier and an active component supported on the carrier, wherein the active component consists of three components of molybdenum, cobalt and nickel, calculated as oxides and based on the hydrocracking Based on the total weight of the catalyst, the content of the molybdenum is 3-20% by weight, the content of the cobalt is 0.5-5% by weight, the conten...

Claims

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Application Information

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IPC IPC(8): B01J29/16B01J29/48B01J29/03B01J29/04B01J29/80B01J37/34B01J37/02B01J37/20B01J33/00C10G47/20
CPCB01J29/166B01J29/48B01J29/0341B01J29/045B01J29/80B01J37/343B01J37/0201B01J37/20B01J33/00C10G47/20B01J29/7815B01J2229/186C10G2300/202C10G2300/70C10G2400/04C10G2400/06C10G2400/08B01J35/394Y02P20/52
Inventor 刘丽杨成敏段为宇郑步梅郭蓉李扬姚运海周勇孙进
Owner CHINA PETROLEUM & CHEM CORP
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