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Class II active center hydrogenation catalyst start-up vulcanization method

A technology of hydrogenation catalyst and active center, which is applied in the field of start-up vulcanization of hydrogenation catalyst with a second type of active center to achieve the effects of convenient operation, improved activity and high catalytic activity

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No suitable sulfidation method has been determined for the second type of active site hydrogenation catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 100g of catalyst was loaded into a small reactor, and the airtightness was qualified. The hydrogen partial pressure was adjusted to 6.0MPa and the temperature was raised at 20°C / h. When the temperature was raised to 100°C, vulcanized oil was introduced for wetting. The sulfurized oil is carried out in a closed circuit, and the sulfurized oil is straight-run kerosene containing 2wt% carbon disulfide, the condition is that the volume ratio of hydrogen to oil is 350:1, and the volume space velocity is 2.0h -1 . Continue to raise the temperature to 180°C at 20°C / h, keep the temperature constant for 8 hours, and continue to raise the temperature at 20°C / h to 280°C at the end of the constant temperature, and keep the temperature constant for 3 hours. After the constant temperature is over, continue to raise the temperature to 310°C at 20°C / h, and switch the raw material oil according to the operation. After switching the feedstock, it was raised to 350°C and operated for 48 ...

Embodiment 2

[0038] 100g of catalyst was loaded into a small reactor, and the airtightness was qualified. The hydrogen partial pressure was adjusted to 6.0MPa and the temperature was raised at 20°C / h. When the temperature was raised to 100°C, vulcanized oil was introduced for wetting. The sulfurized oil is carried out in a closed circuit, and the sulfurized oil is straight-run kerosene containing 2wt% carbon disulfide, the condition is that the volume ratio of hydrogen to oil is 350:1, and the volume space velocity is 2.0h -1 . Continue to raise the temperature to 180°C at 20°C / h, keep the temperature constant for 6 hours, and continue to raise the temperature at 20°C / h to 280°C at the end of the constant temperature, and keep the temperature constant for 6 hours. After the constant temperature is over, continue to raise the temperature to 320°C at 20°C / h, and switch the raw material oil according to the operation. After switching the feedstock, it was raised to 350°C and operated for 48 ...

Embodiment 3

[0040] 100g of catalyst was loaded into a small reactor, and the airtightness was qualified. The hydrogen partial pressure was adjusted to 6.0MPa and the temperature was raised at 20°C / h. When the temperature was raised to 95°C, vulcanized oil was introduced for wetting. The sulfurized oil is carried out in a closed circuit, and the sulfurized oil is straight-run kerosene containing 2wt% carbon disulfide, the condition is that the volume ratio of hydrogen to oil is 350:1, and the volume space velocity is 2.0h -1 . Continue to raise the temperature at 10°C / h to 170°C, keep the temperature constant for 8 hours, and continue to raise the temperature at 20°C / h to 280°C at the end of the constant temperature, and keep the temperature constant for 3 hours. After the constant temperature is over, continue to raise the temperature to 310°C at 20°C / h, and switch the raw material oil according to the operation. After switching the feedstock, it was raised to 350°C and operated for 48 h...

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Abstract

The invention discloses a class II active center hydrogenation catalyst start-up vulcanization method, which comprises the following steps: (1) taking class II active center hydrogenation catalyst before vulcanization; (2) filling the class II active center hydrogenation catalyst before vulcanization into a reactor at normal temperature and pressure, introducing nitrogen to replace air in a reaction system, then replacing the nitrogen with hydrogen and carrying out gas seal; (3) continuing to adjust the temperature of a bed layer of the reactor, and introducing vulcanized oil to moisten the catalysts; (4) cycling the vulcanized oil in a closed mode in the reaction system, gradually injecting vulcanizers into the vulcanized oil, and raising the temperature continuously to complete vulcanization; and (5) adjusting the bed layer to the reaction temperature after vulcanization, and switching raw oil. The catalyst start-up vulcanization method disclosed by the invention is conductive to forming more class II hydrogenation active centers for the catalysts, and is conductive to improving the use performance of the catalysts.

Description

technical field [0001] The invention relates to a start-up vulcanization method of a hydrogenation catalyst, in particular to a start-up vulcanization method of a hydrogenation catalyst with two types of active centers. technical background [0002] Due to the slow growth of crude oil production and increasingly heavy quality, the demand for clean oil products in today's world is increasing, and the product quality requirements are becoming more and more stringent. The hydrogenation process of petroleum distillate is the main technology for producing clean oil products at present, and the preparation technology of hydrogenation catalyst is the key of hydrogenation technology. The active metal component of the prepared hydrogenation catalyst is generally in an oxidized state, and before the oxidized state catalyst is used in industry, its active metal must be converted into a sulfurized state to have a high catalytic activity. Therefore, the sulfidation of the catalyst has a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G49/24C10G47/00C10G45/00
Inventor 陈光王继峰高玉兰徐黎明李崇慧
Owner CHINA PETROLEUM & CHEM CORP
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