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Hydrocracking process start-up vulcanization method

A hydrocracking and process technology, which is applied in the direction of hydroprocessing process, hydroprocessing operation start-up, petroleum industry, etc., can solve problems such as optimizing vulcanization start-up methods, and achieve the goal of reducing vulcanization investment, usage, and treatment Effect

Active Publication Date: 2014-01-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For the hydrocracking process including two types of catalysts, hydrofinishing catalyst and hydrocracking catalyst, the existing start-up sulfidation method does not have an optimized sulfidation start-up method for the difference between the two catalysts, so it is necessary to further optimize the start-up sulfidation process , to improve the technical effect of the hydrocracking process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] FF-36 and FC-32 are put into their respective reactors, dried and airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 100°C, and the vulcanized oil is introduced (the vulcanized oil is straight-run kerosene containing 2wt% carbon disulfide), and the volume space velocity of the vulcanized 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 sulfurized 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 hea...

Embodiment 2

[0049] FF-36 and FC-32 are put into their respective reactors, dried and airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 100°C, and the vulcanized oil is introduced (the vulcanized oil is straight-run kerosene containing 2wt% carbon disulfide), and the volume space velocity of the vulcanized oil is 2h -1 , the volume ratio of hydrogen to oil is 1000. The process is as figure 2 As shown, the hydrogen and sulfurized oil are mixed and enter the heating furnace 1, and then enter the hydrocracking pre-refining reactor 2 after heating, and the gas-liquid outflow 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 fu...

Embodiment 3

[0051] FF-36 and FC-32 are put into their respective reactors, dried and airtight. After the airtightness is qualified, the hydrogen partial pressure is adjusted to 14.0MPa, the temperature is adjusted to 100°C, and the vulcanized oil is introduced (the vulcanized oil is straight-run kerosene containing 2wt% carbon disulfide), and the volume space velocity of the vulcanized oil is 2h -1 , the volume ratio of hydrogen to oil is 1000. The process is as image 3 As shown, the gas and sulfurized 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 s...

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Abstract

The invention discloses a hydrocracking process start-up vulcanization method. A hydrocracking process comprises a hydrocracking pre-refining reactor and a hydrocracking reactor, and oxidation state catalysts are used for each reactor; and the reactors are used for carrying out operations of gas replacement, catalyst drying, gas seal and the like. Under the condition of catalyst vulcanization, vulcanized oil and hydrogen enter a gas-liquid separator after entering the hydrocracking pre-refining reactor, liquid separated by the gas-liquid separator is cycled back to the hydrocracking pre-refining reactor and is cycled in a closed type in the hydrocracking pre-refining reactor, gas separated by the gas-liquid separator enters the hydrocracking reactor, and gas discharged from the hydrocracking reactor is cycled back to the hydrocracking pre-refining reactor. Compared with the prior art, the vulcanization method disclosed by the invention has a good catalyst vulcanization effect and a more prominent reaction effect.

Description

technical field [0001] The invention relates to a start-up vulcanization method of a hydrocracking process, in particular to a start-up vulcanization method of a hydrocracking process comprising a hydrocracking refining reactor and a hydrocracking reactor. 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 activity. Therefore, the sulfidation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G49/24C10G65/12
Inventor 陈光杜艳泽高玉兰徐黎明李崇慧
Owner CHINA PETROLEUM & CHEM CORP
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