Gasoline hydrogenation catalyst and preparation method thereof

A gasoline hydrogenation and catalyst technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low hydrodesulfurization activity, improve catalytic activity, reduce Interaction, stability-enhancing effects

Active Publication Date: 2017-05-24
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The main purpose of the present invention is to provide a gasoline hydrogenation catalyst and its

Method used

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  • Gasoline hydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) γ-Al 2 o 3 Vector preparation

[0046] Take by weighing 500g of silicon-free pseudo-boehmite powder, 30g of turmeric powder, 30g of citric acid, 300ml of 3-5% dilute nitric acid and mix evenly, extrude with extruder, dry at 120°C for 4 hours, and roast at 550°C for 5 After hours, get γ-Al 2 o 3 carrier.

[0047] (2) Get the γ-Al that 150g step (1) obtains 2 o 3 , with 150g mesoporous Al 2 o 3 Mix well (mesoporous Al 2 o 3 Specific surface area 250~350m 2 / g, pore volume 0.2~0.3m 3 / g, pore size 3~5nm), the mixture of the two is used as a composite carrier, denoted as F1.

[0048] (3) Preparation of Co / F1

[0049] Prepare 500ml impregnation solution: weigh 60g of tartaric acid and add it to 400ml of deionized water, stir and heat to 50°C, weigh 23.1g of cobalt nitrate (industrial grade) and 16.3g of ammonium dihydrogen phosphate (industrial grade) into the solution , boil for 0.5 hours. After cooling to room temperature, the solution was transferred to...

Embodiment 2

[0058] (1) γ-Al with TS molecular sieve 2 o 3 Preparation of vector

[0059] Weigh 450g of silicon-free pseudo-boehmite powder, 50g of TS molecular sieve, 30g of turnip powder, 30g of citric acid, 300ml of 3-5% dilute nitric acid and mix evenly, extrude with extruder, dry and roast to obtain γ-Al with TS molecular sieve 2 o 3 Carrier, abbreviated as TSA.

[0060] (2) Get the TSA that 200g step (1) obtains, and 100g mesoporous Al 2 o 3 Mix evenly (specific surface area 250~350m 2 / g, pore volume 0.2~0.3m 3 / g, pore size 3~5nm), the mixture of the two is used as a composite carrier, denoted as F2.

[0061] (3) Preparation of Co / F2

[0062] The preparation of the dipping solution is the same as step (3) of Example 1.

[0063] Weigh 300g of the TSA carrier prepared in step (1), measure 230ml of the cobalt-containing impregnation solution prepared above, impregnate with equal volume for 1h, dry and roast to obtain a semi-finished catalyst.

[0064] (4) Preparation of Co-...

Embodiment 3

[0071] (1) γ-Al 2 o 3 Preparation of vector

[0072] Weigh 300g of silicon-containing pseudo-boehmite, 40g of fenugreek powder, 23g of oxalic acid, and 200ml of 3-5% dilute nitric acid, mix them evenly, extrude them with an extruder, dry and roast them to obtain γ-Al 2 o 3 carrier.

[0073] (2) Get the γ-Al that 250g step (1) obtains 2 o 3 , with 50g mesoporous Al 2 o 3 Mix evenly (specific surface area 250~350m 2 / g, pore volume 0.2~0.3m 3 / g, pore size 3~5nm), the mixture of the two is used as a composite carrier, denoted as F3.

[0074] (3) Preparation of Co / F3

[0075]Prepare 500ml impregnation solution: weigh 80.0g oxalic acid and add it to 400ml water, stir and heat to 60°C, weigh 30g basic cobalt carbonate (industrial grade) and 21g phosphoric acid (industrial grade) into the solution, boil for 0.5 hours , cooled to room temperature, the solution was transferred to a volumetric flask, and water was added to make up to 500ml to obtain a cobalt-containing impre...

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Abstract

The invention discloses a gasoline hydrogenation catalyst and a preparation method thereof. The preparation method includes the following steps that 1, pseudo-boehmite and sesbania cannabina powder are mixed, then a gelatinizing agent and deionized water are added to prepare a gamma-Al2O3 carrier; 2, the gamma-Al2O3 carrier and mesoporous Al2O3 are mixed to serve as a composite carrier; 3, impregnation liquid of a cobalt-containing compound and an additive is prepared, and the composite carrier in the step 2 is impregnated by using an impregnation method; 4, impregnation liquid of a molybdenum-containing compound and a nickel-containing compound is prepared, and the catalyst carrier obtained in the impregnation step 3 is impregnated; 5, impregnation liquid of a tungsten-containing compound is prepared, the catalyst carrier obtained in the impregnation step 4 is impregnated, and drying and calcination are performed so as to obtain the catalyst. The catalyst uses the gamma-Al2O3 and the mesoporous Al2O3 as the composite carrier, uses tungsten, molybdenum, nickel and cobalt as active components and also contains a catalytic activity promoting component phosphorus. The prepared catalyst can be used for hydrogenation treatment of light distillate oil and has high in hydrogen desulfurization and denitrification and olefin saturation activity.

Description

technical field [0001] The invention relates to a low-quality gasoline hydrogenation catalyst and a preparation method thereof, more specifically, a hydrogenation catalyst related to delayed coking gasoline and thermal cracking gasoline hydrotreating to reduce the content of olefins, sulfur and nitrogen, and a preparation method thereof. Background technique [0002] Since the beginning of the 21st century, the enhancement of environmental protection awareness has accelerated the pace of upgrading the quality of vehicle fuels worldwide, and has put forward increasingly stringent requirements for the production of clean fuels. At the end of 2014, my country implemented the National IV standard with a sulfur content of less than 50 μg / g, olefins less than 25%, and aromatics less than 35%. The new standard not only puts forward higher requirements for sulfur content, but also more urgently limits the content of olefins . [0003] Catalytic reforming uses naphtha fraction as raw...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J29/89B01J35/10C10G45/08C10G45/12
CPCB01J23/002B01J23/8885B01J29/89B01J35/1019B01J35/1038B01J2523/00C10G45/08C10G45/12C10G2300/202B01J2523/31B01J2523/51B01J2523/68B01J2523/69B01J2523/845B01J2523/847
Inventor 韩志波马守涛赵野孙发民秦丽红马宝利李凤铉葛冬梅吴显军倪术荣李瑞峰季荣磊刘丽莹靳丽丽孟祥彬董春明陆雪峰谢方明夏恩冬徐铁钢陈东凯赵克岩张凤军
Owner PETROCHINA CO LTD
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