Process for producing gasoline from low-carbon hydrocarbon containing olefin as raw material

A low-carbon hydrocarbon and process technology, applied in the field of regeneration of solid acid catalysts, can solve problems such as inability to use fuel for vehicles

Inactive Publication Date: 2003-12-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, most of the mixed light hydrocarbons from refineries, especially liquefied petroleum gas, are burned as household fuels. With the improvement of environmental protection requirements, liquefied petroleum gas

Method used

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Examples

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Effect test

example 1

[0019] ZSM-5 / ZSM-11 mixed crystal molecular sieves are used, wherein the ratio of ZSM-5 / ZSM-11 is 0.1 / 0.9 (wt), and the molecular sieves are treated with steam at 450°C for two hours. Soak the ammonium molybdate solution on the molecular sieve so that the weight content of molybdenum is 5%. The reaction conditions are: reaction temperature 270°C, reaction pressure 0.2MPa, space velocity 1.0h -1 . The yield of cracked gas (C1+C2) in the tail gas is 0.1%, and the yield of oil is 35.2%. The weight composition of oil is: alkane 36.5%, olefin 35.6%, cyclic hydrocarbon 13.2%, aromatic hydrocarbon 14.7% (benzene content is 0.2%). Oil Research Octane Number: 94.3.

example 2

[0021] ZSM-5 / ZSM-11 mixed crystal molecular sieves are used, wherein the ratio of ZSM-5 / ZSM-11 is 0.3 / 0.7 (wt), and the molecular sieves are treated with steam at 520°C for two hours. Soak the lanthanum nitrate solution on the molecular sieve so that the weight content of lanthanum is 1%. The reaction conditions are: reaction temperature 330°C, reaction pressure 2.0MPa, space velocity 2.0h -1 . The yield of cracked gas (C1+C2) in the tail gas is 0.2%, and the yield of oil is 55.2%. The weight composition of oil is: alkane 30.4%, olefin 16.4%, cyclic hydrocarbon 8.4%, aromatic hydrocarbon 44.8% (benzene content is 1.5%). Oil Research Octane Number: 98.2.

example 3

[0023] ZSM-5 / ZSM-11 mixed crystal molecular sieves are used, wherein the ratio of ZSM-5 / ZSM-11 is 0.8 / 0.2 (wt), and the molecular sieves are treated with steam at 550°C for two hours. The reaction conditions are: reaction temperature 400°C, reaction pressure 5.0MPa, space velocity 10.0h -1 . The yield of cracked gas (C1+C2) in the tail gas is 4.4%, and the yield of oil is 56.7%. The weight composition of oil is: alkane 19.4%, olefin 45.6%, cyclic hydrocarbon 9.4%, aromatic hydrocarbon 25.6% (benzene content is 2.3%). Oil Research Octane Number: 99.3.

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Abstract

In the technological process of producing gasoline with low-carbon hydrocarbon containing olefin, the low-carbon hydrocarbon material containing olefin is reacted in a reactor with solid acid catalyst and modified solid acid catalyst to produce high octane value gasoline and vehicular liquefied gas as side product with gasoline selectivity higher than 90 %, arene content in gasoline organic 5-40 %, alkane content 10-80 % and research octane number 70-120. The catalyst with degraded activity may be high temperature sweeping regenerated in air or mixed nitrogen-oxygen atmosphere.

Description

technical field [0001] The present invention relates to the technique of producing gasoline, specifically provides a process for producing high-octane gasoline from mixed light hydrocarbon raw materials and by-product liquefied gas for vehicles, and provides a regeneration method for the solid acid catalyst used in the process . Background technique [0002] At present, most of the mixed light hydrocarbons from refineries, especially liquefied petroleum gas, are burned as household fuels. With the improvement of environmental protection requirements, liquefied petroleum gas has been paid more and more attention as a clean fuel for vehicles, and the liquefied petroleum gas directly from refineries Liquefied petroleum gas contains a large amount of olefins and cannot be directly used as vehicle fuel. If the liquefied gas from the refinery is reacted to produce high-octane gasoline and co-produced qualified liquefied gas for vehicles, the utilization of liquefied gas will be m...

Claims

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Application Information

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IPC IPC(8): C10G50/00
Inventor 吴治华宋月芹安杰王清遐徐龙伢谢素娟张莲英王开立
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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