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Start-up activation method for hydrogenation cracking process

A technology of hydrocracking and start-up activation, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment. It can solve the problem of no further optimization of the activation process of the external presulfided catalyst loaded into the reactor, and achieve considerable economic and Social benefits, good safety, and the effect of reducing investment

Active Publication Date: 2013-11-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above prior art does not further optimize the activation process of the external presulfurized catalyst loaded into the reactor

Method used

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  • Start-up activation method for hydrogenation cracking process
  • Start-up activation method for hydrogenation cracking process
  • Start-up activation method for hydrogenation cracking process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] EPFF-36 and EPFC-32 are respectively loaded into their respective reactors and made airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 100°C, and the activated oil is introduced (the activated oil is straight-run kerosene), and the volume space velocity of the activated oil is 2h -1 , the volume ratio of hydrogen to oil is 1000. The process is as figure 1 According to the formula (the laboratory pilot plant is used, the reactor is a salt bath isothermal reactor, the main equipment of the following examples is the same, and the process is slightly changed), hydrogen and activated oil are mixed and enter the heating furnace 1, and then enter the hydrogenation after heating Cracking pre-refining reactor 2, the outflow gas-liquid enters the high-pressure gas-liquid separator 4 for gas-liquid separation, the separated gas enters the hydrocracking reactor 3, returns to the heating furnace 1 afte...

Embodiment 2

[0050] EPFF-36 and EPFC-32 are respectively loaded into their respective reactors and made airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 100°C, and the activated oil is introduced (the activated oil is straight-run kerosene), and the volume space velocity of the activated oil is 2h -1 , the volume ratio of hydrogen to oil is 1000. The process is as figure 2 As shown, the hydrogen and activated oil are mixed and enter the heating furnace 1, and then enter the hydrocracking pre-refining reactor 2 after heating, and the outflow gas-liquid enters the gas-liquid separator 6 for gas-liquid separation, and the separated gas enters the hydrocracking Reactor 3 returns to heating furnace 1 after passing through high-pressure gas-liquid separator 4, (or directly returns to heating furnace 1 without passing through high-pressure gas-liquid separator 4.) And before entering heating furnace 1, it is comb...

Embodiment 3

[0052] EPFF-36 and EPFC-32 are respectively loaded into their respective reactors and made airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 100°C, and the activated oil is introduced (the activated oil is straight-run kerosene), and the volume space velocity of the activated oil is 2h -1 , the volume ratio of hydrogen to oil is 1000. The process is as image 3 As shown, the gas and activated oil are mixed and enter the hydrocracking pre-refining reactor 2, and the gas and liquid in the hydrocracking pre-refining reactor 2 enter the high-pressure gas-liquid separator 4 for gas-liquid separation, and the separated gas is returned to the heating furnace 1. After heating, it enters the hydrocracking reactor 3, returns to the hydrocracking pre-refining reactor 2 after passing through the hydrocracking reactor 3, and before entering the hydrocracking pre-refining reactor 2, it is separated from the g...

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Abstract

The invention discloses a start-up activation method for a hydrogenation cracking process, which comprises the following steps that: (1) a hydrogenation cracking pre-refining reactor and a hydrogenation cracking reactor are adopted in the hydrogenation cracking process, and catalysts are ex-situ presulfurizing catalysts; (2) the hydrogenation cracking pre-refining reactor and the hydrogenation cracking reactor are used for carrying out operation including gas displacement, device airtightness and the like; and (3) activation oil and hydrogen gas enter a gas-liquid separator after entering the hydrogenation cracking pre-refining reactor under the ex-situ presulfurizing catalyst activation condition, a liquid phase separated out from the gas-liquid separator is circulated back to the hydrogenation cracking pre-refining reactor, the closed loop circulation is carried out in the hydrogenation cracking pre-refining reactor, a gas phase separated out from the gas-liquid separator enters the hydrogenation cracking reactor, and the gas phase discharged from the hydrogenation cracking reactor is circulated back to the hydrogenation cracking pre-refining reactor. Compared with the prior art, the method has the advantages that the catalyst sulfurization effect is good, and the excellent reaction effect is realized.

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 for a hydrocracking process including a hydrocracking refining reactor and a hydrocracking reactor using an external presulfurization 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 catalytic...

Claims

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Application Information

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