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Vulcanization type hydrogenation catalyst and preparation method thereof, and gasoline hydrodesulfurization method

A hydrogenation catalyst and vulcanization-type technology, applied in physical/chemical process catalysts, chemical instruments and methods, and hydrocarbon oil treatment, can solve problems such as poor selectivity, low sweetening activity, and harsh reaction conditions, and achieve effective removal Effect

Active Publication Date: 2018-05-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the defects of low demercaptan activity, poor selectivity and harsh reaction conditions of the existing hydrogenation catalyst, and provides a new sulfurized hydrogenation catalyst and its preparation method and gasoline hydrodesulfurization method

Method used

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  • Vulcanization type hydrogenation catalyst and preparation method thereof, and gasoline hydrodesulfurization method

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preparation example Construction

[0034] The present invention also provides a method for preparing a sulfurized hydrogenation catalyst, the method comprising:

[0035] (1) The carrier is impregnated with a solution containing the precursor of the active metal component A and the precursor of the active metal component B, the active metal component A is selected from the group VIII metal elements, and the active metal component B is selected from the group VIII metal elements VIB group metal elements;

[0036] (2) vulcanizing the solid material obtained after impregnating step (1);

[0037] Wherein, based on the respective metal elements, the molar ratio of the precursor of the active metal component A to the precursor of the active metal component B is 0.6-2.3:1;

[0038] The precursor of the active metal component B is ammonium thioacid.

[0039] The selection of the active metal component A, the active metal component B and the carrier in the present invention is as described above, and will not be repeat...

Embodiment 1

[0074] (1) Weigh 25.4g of ammonium thiomolybdate, add deionized water to prepare 110mL of aqueous solution, impregnate 100g of carrier with this solution for 6h, and then vacuum dry at 120°C for 4h to obtain Mo / Al 2 o 3 ;

[0075] (2) Weigh 22.1g cobalt nitrate and 21.55g EDTA, add deionized water to prepare 80mL solution, impregnate Mo / Al 2 o 3 6h, and then vacuum dried at 120°C for 4h to obtain the oxidation state CoMo / Al 2 o 3 ;

[0076] (3) For oxidation state CoMo / Al 2 o 3 Carry out wet vulcanization, the specific conditions include: in the presence of hydrogen, the oxidation state CoMo / Al 2 o 3 Contact reaction with cyclohexane containing 5% by weight of carbon disulfide at 300°C and 2.4MPa for 6h, and the volume space velocity of hydrogen is 1600h -1 , the volume ratio of hydrogen to oil is 400, and the reaction temperature is lowered to room temperature to obtain sulfurized hydrogenation catalyst S-1.

[0077] The component contents and XPS analysis results ...

Embodiment 2

[0079] (1) Weigh 31.8g of ammonium thiomolybdate, add deionized water to prepare a 110mL aqueous solution, impregnate 100g of carrier with this solution for 6h, and then vacuum dry at 120°C for 4h to obtain Mo / Al 2 o 3 ;

[0080] (2) Weigh 22.1g of cobalt nitrate and 14.2g of citric acid, add deionized water to make 80mL solution, impregnate Mo / Al 2 o 3 6h, and then vacuum dried at 120°C for 4h to obtain the oxidation state CoMo / Al 2 o 3 ;

[0081] (3) For oxidation state CoMo / Al 2 o 3 Carry out wet vulcanization, the specific conditions include: in the presence of hydrogen, the oxidation state CoMo / Al 2 o 3 Contact and react with straight-run gasoline distillate oil containing 3% by weight of carbon disulfide at 320°C and 3.2MPa for 10h, and the hydrogen volume space velocity is 600h -1 , the volume ratio of hydrogen to oil is 300, and the reaction temperature is lowered to room temperature to obtain sulfurized hydrogenation catalyst S-2.

[0082] The component con...

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Abstract

The invention relates to the field of hydrofining, and discloses a vulcanization type hydrogenation catalyst and a preparation method thereof, and a gasoline hydrodesulfurization method, wherein an atom ratio of the active metal component A to the sum of the active metal component A and the active metal component B is more than 0.3, and the II-type active phase A-B-S content is more than 55%. According to the preparation method, a molar ratio of the precursor of the active metal component A to the precursor of the active metal component B is 0.6-2.3:1, and the precursor of the active metal component B is an ammonium thioate. According to the present invention, with the application of the vulcanization type hydrogenation catalyst in the gasoline hydrodesulfurization, the mercaptan can be effectively removed at the low reaction temperature under the low reaction pressure in the case of the low octane number loss.

Description

technical field [0001] The invention relates to the field of hydrorefining, in particular to a method for preparing a hydrogen sulfide hydrogenation catalyst, a sulfurized hydrogenation catalyst prepared by the method, and a gasoline hydrodesulfurization method. Background technique [0002] At present, air pollution has caused more and more serious environmental problems, and the exhaust gas emitted by automobile engines has become the main source of urban air pollution. Sulfur in gasoline is combusted to produce SO x Causes serious air pollution. Countries around the world have put forward strict restrictions on the sulfur content in gasoline. my country is also gradually accelerating the pace of sulfur content restrictions in gasoline. At the end of 2009, clean gasoline standards similar to Euro III emission standards have been implemented. In 2014, clean gasoline standards similar to Euro IV emission standards have been implemented across the country. In 2017, clean gaso...

Claims

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Application Information

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IPC IPC(8): B01J27/051B01J27/049C10G45/08
CPCB01J27/049B01J27/0515C10G45/08C10G2300/202C10G2300/70C10G2400/02
Inventor 刘锋褚阳李明丰李会峰习远兵
Owner CHINA PETROLEUM & CHEM CORP
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