Environment-friendly pre-vulcanization reforming pre-hydrogenation catalyst, preparation method and application thereof

A green and environmentally friendly catalyst technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as complex processes and insufficient energy utilization, and achieve high economic value

Active Publication Date: 2020-06-19
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0031] The main purpose of the present invention is to provide a kind of green environment-friendly type pre-sulfurization reforming pre-hydrogenation catalyst and its preparation method and application, to overcome catalyst preparation in the prior art The process and the pre-sulfurization process need to be carried out separately, the process is complicated, and the energy cannot be fully utilized.

Method used

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  • Environment-friendly pre-vulcanization reforming pre-hydrogenation catalyst, preparation method and application thereof
  • Environment-friendly pre-vulcanization reforming pre-hydrogenation catalyst, preparation method and application thereof
  • Environment-friendly pre-vulcanization reforming pre-hydrogenation catalyst, preparation method and application thereof

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preparation example Construction

[0057] The invention discloses a preparation method of a green and environment-friendly presulfidation reforming prehydrogenation catalyst. The preparation method comprises the following steps:

[0058] Step 1, the catalyst carrier is impregnated with active components, dried at 110-170°C, and calcined at 480-520°C;

[0059] Step 2, cooling the catalyst calcined in step 1 to 250-280°C;

[0060] Step 3, heat up the pre-vulcanizing agent to 250-280°C, impregnate and mix with the catalyst cooled to 250-280°C in step 2, keep the temperature constant for 1-2 hours, then cool down to 40-60°C, and then spray the accelerator pouring, keep the temperature down to room temperature after 1-2 hours, and obtain a pre-sulfided reforming pre-hydrogenation catalyst.

[0061] Among them, firstly, the catalyst preparation process is not particularly limited in the present invention, and methods known to those skilled in the art are all available. The catalyst carrier can be one or more of the...

Embodiment 1

[0084]A reforming pre-hydrogenation catalyst of molybdenum-nickel active metal components, the content of molybdenum trioxide on 100g of the catalyst is 17g, the content of nickel oxide is 3g, the calcination temperature of the catalyst is 480°C, and the temperature is lowered to 250°C at 15°C / h pre-vulcanized treatment. The pre-vulcanizing agent is prepared by mixing 15g FCC gasoline, 4g castor oil, 4g soybean oil, 1g corn oil, 6g cyclohexane, 0.03g citric acid, 3g elemental sulfur, and 5g ethanethiol. Stir evenly and heat up at 10°C / h To 250°C, impregnate the catalyst at a constant temperature of 250°C in the presulfiding agent, and keep the temperature constant for 1.0h, then lower it to 50°C at 10°C / h, and spray 200μg / g (the proportion of the accelerator to the total amount of the catalyst) The dithiol benzothiazole solution was sprayed for 5 minutes, kept at a constant temperature for 1.0 h, and then lowered to room temperature at 15°C / h to obtain sample-1.

Embodiment 2

[0086] A reforming prehydrogenation catalyst of cobalt-molybdenum-nickel active metal component, molybdenum trioxide content is 13g on 100g catalyst, nickel oxide content is 3g, cobalt oxide 2g, the roasting temperature of catalyst is 500 ℃, with 20 ℃ / h Lower the temperature to 260°C for pre-vulcanization treatment. The presulfurizing agent is 14g FCC gasoline, 5g castor oil, 5g soybean oil, 2g safflower oil, 3g corn oil, 8g n-heptane, 0.005g citric acid, 1g elemental sulfur, 2g ethanethiol, 3g CS 2 Carry out mixing and preparation, after stirring evenly, raise the temperature to 260°C at 12°C / h, impregnate the catalyst at a constant temperature of 260°C in the pre-vulcanizing agent, and keep the temperature constant for 1.5 hours, then lower it to 40°C at 15°C / h, spray 1000μg / h g (the ratio of the accelerator to the total amount of the catalyst) of dithiol-benzothiazole solution, the spray time was 15 minutes, the temperature was kept constant for 2.0 hours, and then cooled t...

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Abstract

The invention discloses an environment-friendly pre-vulcanization reforming pre-hydrogenation catalyst, a preparation method and application thereof. The preparation method comprises the following steps: 1, impregnating a catalyst carrier with an active component, drying, and roasting at 480-520 DEG C; 2, cooling the catalyst roasted in the step 1 to 250-280 DEG C; and 3, heating a pre-vulcanizingagent to 250-280 DEG C, dipping and mixing the pre-vulcanizing agent with the catalyst cooled to 250-280 DEG C in the step 2, keeping the temperature constant for 1-2 hours, cooling to 40-60 DEG C, spraying an accelerant, keeping the temperature constant for 1-2 hours, and cooling to room temperature to obtain the pre-vulcanization reforming pre-hydrogenation catalyst. According to the method, the preparation process and the pre-vulcanization process of the catalyst are fully combined, so that the prepared pre-vulcanization type reforming pre-hydrogenation catalyst is high in metal dispersityand high in active metal vulcanization degree, NH3 and waste gas emission are avoided in the preparation process, direct starting of the catalyst can be achieved, and a secondary vulcanization or activation process is not needed.

Description

technical field [0001] The invention relates to a green and environment-friendly presulfidation reforming prehydrogenation catalyst and its preparation method and application. The method is used for presulfidation treatment of the reforming prehydrogenation catalyst and can improve the hydrogenation activity of the catalyst. Background technique [0002] The reforming prehydrogenation catalyst belongs to the hydrotreating catalyst. The main active components of the catalyst are Mo, W, Ni, and Co. Since the sulfide state of the above metals has higher activity and stability than the oxidation state, the prehydrogenation catalyst The active metal in should usually be in the sulfide state. For oxidized catalysts, pre-sulfurization treatment is required when the device is started to convert the oxidized metal in the catalyst into a sulfide state. At present, the pre-sulfurization treatment process in the device is mainly liquid phase method and gas phase method, no matter which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/049B01J27/051B01J37/02B01J37/08C10G49/04C10G49/24C10G49/08
CPCB01J27/049B01J27/051B01J37/0201B01J37/082C10G49/04C10G49/24C10G49/08Y02P20/52
Inventor 马宝利徐铁钢徐伟池王丹宋金鹤于春梅张文成孙发民谭明伟温广明郭金涛张铁珍赵野李瑞峰王刚张全国郭立艳张立军
Owner PETROCHINA CO LTD
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