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Petroleum hydrocarbon cracking carbon nine cut fraction hydrogenation technology

A technology for cracking carbon and petroleum hydrocarbons, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment. The liquid distribution is reasonable and the effect of improving the effective utilization rate

Active Publication Date: 2010-05-12
广东省茂名华粤集团有限公司 +2
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  • 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

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  • Petroleum hydrocarbon cracking carbon nine cut fraction hydrogenation technology
  • Petroleum hydrocarbon cracking carbon nine cut fraction hydrogenation technology
  • Petroleum hydrocarbon cracking carbon nine cut fraction hydrogenation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 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.

[0024] 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.

[0025] The above-mentioned part of the cracked carbon nine is treated by pressure thermal polymerization, the thermal polymerization pressure is 0.5-1.6Mpa, the temperature is 120-260°C, and the time is 8-20h. The composition of the flash oil produced: 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%; th...

Embodiment 2

[0035] 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.

[0036] Table 3 Reactor bed temperature distribution

[0037]

[0038] Table 4 Composition analysis before and after hydrogenation

[0039]

[0040] The data in Table 3 shows that the temperature distribution of the hydrogenation reactor is reasonable, and no hot spots are gathered, which proves that the total space velocity is between 3.0 and 4.0h when processing high-impurity C9 raw materials -1 Under these conditions, the gas-liquid distribution in the reactor is good without channeling and local overheating.

[0041] The data in Table 4 shows that the rectified C9 ...

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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 technology, this technology can improve cracked C9 recovery rate, reduce the colloid content of cracked C9, make the cracked C9 after hydrogenation Nine products are colorless and have no irritating odor. 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 cyclopentadien...

Claims

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Application Information

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Patent Type & Authority Patents(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
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