Start-up activating method of hydrocracking process

A technology of hydrocracking and start-up activation, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problem that the activation process is not further optimized, and achieve fully and thoroughly wetting, reduce cracking loss, and improve activity. Effect

Active Publication Date: 2014-04-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The above-mentioned existing external presulfurization includes the second type of active center hydrocracking pre-refining catalyst. The activation process of the hydrocracking supporting catalyst loaded into the reactor is not further optimized in order to improve the technical effect of the hydrocracking process.

Method used

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  • Start-up activating method of hydrocracking process

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Effect test

Embodiment 1

[0047] EPFF-46 and EPFC-32 are installed in their respective reactors and are airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 100°C, and the activation oil is introduced, and the volume space velocity of the activation oil is 2h -1 , the volume ratio of hydrogen to oil is 1000. Start to heat up to 220°C at 10°C / h, and start to withdraw the activated oil. Use hydrogen to continue to raise the temperature to 370°C at 10°C / h, keep the temperature constant for 8 hours, and when the constant temperature is over, switch the raw material oil according to the operation. After switching the feedstock, it was raised to 378°C and operated for 48 hours, and the oil samples were analyzed. The catalyst activity results are shown in Table 3.

Embodiment 2

[0049] EPFF-46 and EPFC-32 are installed in their respective reactors and are airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 150°C, and the activation oil is introduced, and the volume space velocity of the activation oil is 2h -1 , the volume ratio of hydrogen to oil is 1000. Start to heat up to 230°C at a rate of 10°C / h, and start to withdraw the activated oil. Use hydrogen to continue to raise the temperature to 370°C at 10°C / h, keep the temperature constant for 6 hours, and when the constant temperature is over, switch the raw material oil according to the operation. After switching the feedstock, it was raised to 378°C and operated for 48 hours, and the oil samples were analyzed. The catalyst activity results are shown in Table 3.

Embodiment 3

[0051] EPFF-46 and EPFC-32 are installed in their respective reactors and are airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 120°C, and the activation oil is introduced, and the volume space velocity of the activation oil is 2h -1 , the volume ratio of hydrogen to oil is 1000. Start to heat up to 220°C at 10°C / h, and start to withdraw the activated oil. Use hydrogen to continue to raise the temperature to 360°C at 10°C / h, keep the temperature constant for 8 hours, and when the constant temperature is over, switch the raw material oil according to the operation. After switching the feedstock, it was raised to 378°C and operated for 48 hours, and the oil samples were analyzed. The catalyst activity results are shown in Table 3.

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Abstract

The invention discloses a start-up activating method of hydrocracking process. The hydrocracking process uses the ex-situ pre-vulcanized hydrocracking pre-refining catalyst and ex-situ pre-vulcanized hydrocracking catalyst, wherein the hydrocracking pre-refining catalyst is the second kind of the active centre hydrogenation catalyst. The processes of activating with wet method first and activating with dry method then are used by the start-up activating method. The wet method activation is switched as dry method activation when the activating temperature reaches up to 170-260 DEG C. The start-up activating method of the invention can ensure the activities of hydrocracking pre-refining catalyst and hydrocracking catalyst and simultaneously increase the safety and stability of the start-up activating method. The start-up activating method is the start-up activating process of the hydrocracking process which is the most suitable for the ex-situ pre-vulcanized second kind active centre hydrogenation catalyst.

Description

technical field [0001] The invention relates to a start-up activation method of a hydrocracking process, in particular to a start-up activation method of a hydrocracking process using an external presulfurization catalyst, especially a second-type active center hydrocracking pre-refining catalyst. 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. Petroleum fraction hydrogenation technology is currently the main technology for producing clean oil products, and the preparation technology of hydrogenation catalyst is the key to hydrogenation technology. The active metal component of the prepared hydrogenation catalyst is in an oxidized state, and before the oxidized state catalyst is used in industry, its active metal needs to be converted into a sulfurized state to have high catal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/02C10G65/00
Inventor 陈光高玉兰杜艳泽徐黎明李崇慧
Owner CHINA PETROLEUM & CHEM CORP
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