Catalysts grading method for coker dry gas hydrogenation for preparation of ethylene cracking feed

A technology for coking dry gas and ethylene cracking, which is applied in the processing of gas mixtures, petroleum industry, and hydrocarbon oil treatment. It can solve problems such as complex processes, and achieve the effects of reducing the impact of activity, improving activity, and reducing costs.

Active Publication Date: 2016-01-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method can obtain raw materials that meet the production requirements of the subsequent ethylene cracking furnace, but the process is very complicated

Method used

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  • Catalysts grading method for coker dry gas hydrogenation for preparation of ethylene cracking feed
  • Catalysts grading method for coker dry gas hydrogenation for preparation of ethylene cracking feed
  • Catalysts grading method for coker dry gas hydrogenation for preparation of ethylene cracking feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The coking dry gas is contacted with the hydrogenation catalyst for hydrogenation reaction. In the three hydrogenation reaction zones of the hydrogenation reactor: the first hydrogenation reaction zone is filled with hydrofinishing catalyst I with a loading capacity of 10ml, and the second hydrogenation reaction zone is The reaction zone is filled with hydrofinishing catalyst II, with a loading volume of 30ml, and the third hydrogenation reaction zone is filled with hydrofinishing catalyst III, with a loading volume of 60ml.

Embodiment 2

[0026] The coking dry gas is contacted with the hydrogenation catalyst for hydrogenation reaction. In the three hydrogenation reaction zones of the hydrogenation reactor: the first hydrogenation reaction zone is filled with hydrofinishing catalyst I with a loading capacity of 10ml, and the second hydrogenation reaction zone is The reaction zone is filled with hydrofinishing catalyst II, with a loading capacity of 20ml, and the third hydrogenation reaction zone is filled with hydrofinishing catalyst III, with a loading capacity of 70ml.

Embodiment 3

[0028] The coking dry gas is contacted with the hydrogenation catalyst for hydrogenation reaction. In the three hydrogenation reaction zones of the hydrogenation reactor: the first hydrogenation reaction zone is filled with hydrofinishing catalyst I with a loading capacity of 10ml, and the second hydrogenation reaction zone is The reaction zone is filled with hydrofinishing catalyst II, with a loading capacity of 40ml, and the third hydrogenation reaction zone is filled with hydrofinishing catalyst III, with a loading capacity of 50ml.

[0029]Two kinds of dry gas raw materials are used in the embodiment of the present invention, namely dry gas raw material 1 and dry gas raw material 2, and their compositions are listed in Table 1 and Table 2 respectively. Pack the internal diameter 12mm by the catalyst grading method among the embodiment 1 ~ 3, in the stainless steel reactor of long 650mm, at hydrogen partial pressure 2.5MPa, space velocity 600h -1 Under certain operating con...

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Abstract

The invention discloses a catalysts grading method for coker dry gas hydrogenation for preparation of ethylene cracking feed. According to the method, coker dry gas is contacted with a hydrogenation catalyst to carry out a hydrogenation reaction, and olefin in coker dry gas is saturated to further obtain an ethylene cracking feedstock, wherein three hydrogenation reaction zones are successively arranged in a hydrogenation reactor. By reasonable grading of catalysts in different systems, advantages of the respective catalysts during different hydrogenation processes are fully performed. By synergism among the catalysts and by cooperation of reaction temperature gradients of the three hydrogenation reaction zones, activity of the monolithic catalyst is raised.

Description

technical field [0001] The invention relates to a catalyst gradation method for preparing ethylene cracking material through hydrogenation of coking dry gas. technical background [0002] With the development of the oil refining industry, domestic petrochemical enterprises have newly built and expanded several sets of large-scale ethylene production units in recent years, resulting in a shortage of ethylene raw materials. The reality forces companies to find new ethylene raw materials to fill this gap, among which coking dry gas Deep processing of raw materials is one of the topics that people generally pay attention to. Coking dry gas is rich in C 2 The above components (such as ethane, ethylene, etc.), these components are very important chemical raw materials, the hydrotreating of coking dry gas can mainly saturate the olefins in the raw materials, and further serve as raw materials for ethylene cracking. However, since the coking dry gas contains impurities such as oxy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G70/02
Inventor 徐彤艾抚宾祁文博乔凯袁毅
Owner CHINA PETROLEUM & CHEM CORP
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