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Method for producing high octane number gasoline blending component through mixing C4 hydrocarbon aromatization

A technology of aromatization and carbon tetrahydrocarbons, which is applied in the production of liquid hydrocarbon mixtures, the treatment of hydrocarbon oil, and the petroleum industry. Improved cracking performance and good economic benefits

Active Publication Date: 2014-01-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low product yield is the key to affect the economics of aromatization technology

Method used

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  • Method for producing high octane number gasoline blending component through mixing C4 hydrocarbon aromatization
  • Method for producing high octane number gasoline blending component through mixing C4 hydrocarbon aromatization
  • Method for producing high octane number gasoline blending component through mixing C4 hydrocarbon aromatization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Using C4 as a by-product of a refinery as a raw material, its composition is shown in Table 1:

[0033] Table 1 Raw material composition

[0034]

[0035] The aromatization catalyst is ZSM-5 molecular sieve. After being treated with steam at 520°C for 12 hours, tungsten nitrate and cobalt nitrate are impregnated on the molecular sieve so that the weight content of tungsten and cobalt are 1.5% and 3.5% respectively. The aromatization reaction conditions are: reaction temperature 340°C, reaction pressure 2.0MPa, total hydrocarbon feed space velocity 1.0h -1 , the reaction condition of hydrogen oil ratio 50 (v / v), the isobutane dehydrogenation catalyst prepared according to Example 7 in CN 1185994A is loaded in the dehydrogenation reactor, reaction temperature 560 ℃, feeding space velocity 100h -1 .

[0036] Reaction results: The yield of each component in the system is: dry gas 4.72%, cracked material yield 24.12%, liquid hydrocarbon yield above C5 71.16%, and octane...

Embodiment 2

[0043] The C4 aromatization method is the same as in Example 1, and the aromatization catalyst SIHZSM-5(A)-08 prepared according to Example 9 in CN1586721A is loaded into the aromatization reactor, the reaction temperature is 380°C, and the reaction pressure is 2.5MPa , total hydrocarbon feed space velocity 2.0h -1 , the reaction condition of hydrogen oil ratio 150 (v / v), the isobutane dehydrogenation catalyst prepared according to the embodiment 2 in CN 1185994A is loaded in the dehydrogenation reactor, reaction temperature 620 ℃, feeding space velocity 300h -1 .

[0044] Reaction results: The yield of each component of the system is: dry gas 7.87%, cracked material yield 23.17%, liquid hydrocarbon yield above carbon five 68.96%, octane number 94.6. The composition of cracking raw materials is: propane 62.07%, n-butane 36.71%.

Embodiment 3

[0046] The C4 aromatization method is the same as in Example 1, and the aromatization catalyst SIHZSM-5(A)-07 prepared according to Example 9 in CN1586721A is loaded in the aromatization reactor, the reaction temperature is 340°C, and the reaction pressure is 1.5MPa , total hydrocarbon feed space velocity 1.5h -1 , the reaction condition of hydrogen oil ratio 100 (v / v), the isobutane dehydrogenation catalyst prepared according to the embodiment 3 in CN 1185994A is loaded in the dehydrogenation reactor, reaction temperature 590 ℃, feeding space velocity 150h -1 .

[0047] Reaction results: The yield of each component of the system is: dry gas 5.41%, cracked material yield 23.91%, liquid hydrocarbon yield above carbon five 70.78%, octane number 95.9. The composition of cracking raw materials is: propane 60.62%, n-butane 38.19%.

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Abstract

The invention relates to a method for producing a high octane number gasoline blending component and concurrently co-producing an ethylene cracking raw material by using C4 hydrocarbons. The method is characterized in that an aromatization and isobutane dehydrogenation combination manner is adopted, such that isobutane doing not participating in the aromatization reaction is subjected to dehydrogenation to produce isobutene, and the isobutene circularly enters the aromatization reactor to participate in the reaction. According to the present invention, isobutane circularly participates in the reaction, and the cracking raw materials are propane and n-butane, such that the cracking performance is good; and the gasoline blending component yield is high, the octane number of the gasoline blending component is high, and economic benefits of the equipment is good.

Description

technical field [0001] The invention relates to a method for producing high-octane gasoline blending components by aromatizing mixed carbon four hydrocarbons. The method is beneficial to the effective utilization of C4 hydrocarbons and increases the added value of C4 resources. Background technique [0002] The catalytic cracking unit and ethylene cracking unit of the refinery produce a large amount of C4 liquefied petroleum gas as a by-product. At present, my country lacks industrial technology for large-scale utilization of C4 liquefied petroleum gas, except for the production of MTBE from isobutylene in C4 liquefied petroleum gas. , most of the rest are used as civil liquefied petroleum gas fuel. Converting liquefied gas into liquid fuels such as aromatics or gasoline through aromatization is a method of liquefied gas utilization that has attracted much attention. [0003] CN00122963.X discloses a low-carbon hydrocarbon aromatization catalyst for the production of aromat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02C10G50/00
Inventor 李长明马安刘飞马应海李吉春程亮亮黄剑锋王玫田亮孙世林王小强李世龙马艳捷孔祥冰杨利斌景媛媛周金波
Owner PETROCHINA CO LTD
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