Petroleum hydrocarbon cracking carbon nine cut fraction hydrogenation technology

A technology for cracking carbon and petroleum hydrocarbons, used in hydrotreating process, petroleum industry, processing of hydrocarbon oil, etc., can solve the problems of long process, high raw material colloid, high energy consumption, and achieve the goal of inhibiting the reaction of polymerization and coke formation, gas and gas. Reasonable liquid distribution and the effect of improving effective utilization

Active Publication Date: 2007-04-18
广东省茂名华粤集团有限公司 +2
View PDF1 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is long, and the high-temperature gas-phase hydrogenation in the second stage consumes a lot of energy. Because the raw material is high in colloid, after the first-stage hydrogenation, it is difficult to ensure long-term operation in the second-stage high-temperature hydrogenation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The catalyst used was supported on Al 2 o 3 -SiO 2 Ni-based catalysts. Catalyst specific surface area 180m 2 / g, the pore volume is 0.5ml / g, and it is a bimodal pore catalyst.

[0025] The composition of cracked carbon nine: the content of methyl styrene, styrene and other alkenyl aromatics and indene is 36%, the content of dicyclopentadiene is 32%, the content of tea is 3%, and the content of monoolefins, alkanes and others is 29%. The density is 0.948g / ml, the distillation range is 118~228℃, and the colloid is 4000mg / 100ml.

[0026] The above-mentioned part of cracked carbon nine is treated by pressure thermal polymerization method, the thermal polymerization pressure is 0.5-1.6Mpa, the temperature is 120-260°C, and the time is 8-20h. Composition of the produced flash oil: the content of methyl styrene, styrene and other alkenyl aromatics and indene is 7.8%, the content of dicyclopentadiene is 6.5%, and the content of monoolefins, alkanes and others is 85.7%; the...

Embodiment 2

[0033] Catalyst, flash oil are the same as embodiment 1, and rectification carbon nine adopts the product of table 1 serial number 5 of embodiment 1. In the 20,000-ton / year cracking C9 hydrogenation industrial unit, an upflow bubbling bed reactor is used for hydrogenation, and the colloid after mixing the flash oil and the rectified C9 is controlled at -1 . The results are shown in Table 3 and Table 4.

[0034] Entrance

temperature

℃

Bed temperature distribution °C

Total pressure Mpa

A

B

C

D

47.2

143.8

139.4

119.9

48.9

3.5

47

139.6

132.8

112.5

48.6

3.5

47.5

139.8

133.3

116

48.8

3.5

46.6

138.2

131.4

116

47.6

3.4

44.8

136.3

129.1

113.7

45.9

3.4

46.8

140.7

132.3

114.2

47.6

3.6

46...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to view more

Abstract

This invention relates to a craft of hydrogenation of petroleum alkanes schizolysis carbon nine fraction of distillate, and it applies the craft of the combination of pressure thermal polymerization and finestill. Some of the carbon nine is conducted pressure thermal polymerization, while the other is conducted negative pressure finestill. The hydrogenation is conducted on flash evaporation oil which is from pressure thermal polymerization and finestill carbon nine which is from negative pressure finestill. This craft can inprove the carbon nine distill proportion and cut down the amount of colloid of schizolysis carbon nine, which make the schizolysis carbon nine product after hydrogenation colorless and none stimulant smell.

Description

technical field [0001] The present invention relates to the processing method of petroleum hydrocarbon distillate, particularly relate to petroleum hydrocarbon cracking C9 distillate hydrogenation process, this process can improve cracking C9 recovery rate, reduce the colloid content of cracking C9, make hydrogenation after The cracked carbon nine product is colorless and has no irritating smell. Background technique [0002] The cracked carbon nine fraction is a by-product of ethylene cracking. Its output and composition vary with the cracking raw materials. In terms of output, it is generally 10-15% of the total ethylene output. The content of aromatics in the cracked C9 fraction is 40-60%, mostly alkenyl aromatics, unstable mono-olefins, di-olefins and dimers, polymers are very high, of which only dicyclopentadiene is as high as 25-35% , the outstanding feature of this raw material instability is that the dimer and multimer are high, and most of them are cyclopentadiene ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/06C10G67/00
Inventor 李斯琴王鑫泉阚一群何开吴壮志
Owner 广东省茂名华粤集团有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap