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Method and system for producing needle coke raw material oil by performing reduced pressure distillation on catalytic slurry oil to remove aromatic hydrocarbon oil solids

A technology of catalytic oil slurry and needle coke, which is only applied in the direction of multi-stage series refining process, can solve the problems of slow industrialization of oil-based needle coke, and achieve the effect of increasing the desolidification efficiency

Inactive Publication Date: 2020-06-19
武汉兰兆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For decades, my country has been researching and developing high-end needle coke technology. Although there is a certain foundation in the technology of coal-based needle coke, there is still a gap with foreign companies in terms of production capacity and product quality. The industrialization of needle coke is still very slow

Method used

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  • Method and system for producing needle coke raw material oil by performing reduced pressure distillation on catalytic slurry oil to remove aromatic hydrocarbon oil solids
  • Method and system for producing needle coke raw material oil by performing reduced pressure distillation on catalytic slurry oil to remove aromatic hydrocarbon oil solids
  • Method and system for producing needle coke raw material oil by performing reduced pressure distillation on catalytic slurry oil to remove aromatic hydrocarbon oil solids

Examples

Experimental program
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Effect test

Embodiment 1

[0063] In the S1 step, the original oil slurry stored in the oil slurry storage tank 1 (this oil slurry will come from a refinery of Sinopec in the future, referred to as oil slurry SLO in this embodiment) is extracted from the oil slurry pump 2 of the storage tank. The oil slurry storage tank 1 enters the upper stage oil heat exchanger 3 for heat exchange and preheating, and the upper stage oil whose temperature drops after heat exchange is transported to the light oil storage tank 13; after the first heat exchange, the original oil slurry enters the clarified oil heat exchanger 4 for Secondary heat exchange, after the temperature continues to rise, it enters the middle oil heat exchanger 5 for three times of heat exchange, making full use of the waste heat of vacuum distillation and liquid-solid separator, and the catalytic oil slurry after heat exchange enters the S2 step. The middle section oil enters the middle section oil surge tank 6. At the same time, the original oil ...

Embodiment 2

[0072] Step S1, step S2, and step S3 in this embodiment 2 are the same as those in embodiment 1, and the only difference lies in step S4.

[0073] In the S4 step, during the treatment of the liquid-solid separator, different from Example 1, the externally connected high-voltage power supply applies a DC high voltage of up to 35KV to the liquid-solid separator, and generates a maximum of about 9.2× in the separator. 10 5 With a strong electric field of V / m, under the action of a strong gradient electric field force, the solid particles in the aromatic oil flowing through the packed bed of the separator will be moved by force and removed from it, and the solid ash content of the desolidified clarified oil will be reduced to below 10ppm. Other operating parameters are the same as step S4 in Example 1. The decant oil product is sampled at the finished product storage tank 12 or the measuring line of the needle coke production line to obtain decant oil sample 2#.

[0074] The ash ...

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Abstract

The invention provides a method and a system for producing needle coke raw material oil by performing reduced pressure distillation on catalytic slurry oil to remove solid from aromatic hydrocarbon oil. According to the invention, aromatic hydrocarbon-rich oil with high economic value is obtained by comprehensively utilizing catalytic slurry oil, and the problem that the solid ash content of needle coke raw material oil prepared from the slurry oil is limited to be too high is solved by an efficient solid removal means; the traditional oil slurry comprehensive utilization method is difficult to achieve stable industrial production and low in solid removal efficiency, the ash content of the treated oil slurry can only be reduced to 300 ppm to 500 ppm, and the requirement for high-added-value application of the oil slurry cannot be met; the method of the invention is different from the traditional oil slurry comprehensive utilization method, adopts an efficient oil slurry solid removal technical means, and substantially improves the quality of the aromatic hydrocarbon-rich oil serving as the needle coke raw material oil; and the ash content of the oil slurry treated by the method disclosed by the invention can be reduced to be below 100 ppm, even below 10 ppm, which is far higher than that of the traditional comprehensive utilization method of the oil slurry, so that the processof converting the catalytic oil slurry which is difficult to treat and low in economic additional value into needle coke raw material oil with high additional value is realized.

Description

technical field [0001] The invention relates to the field of petroleum refining catalytic oil slurry desolidification and high-value comprehensive utilization processing method of oil slurry, in particular to a method and system for producing needle coke raw material oil by desolidifying catalytic oil slurry vacuum distillation aromatic oil. Background technique [0002] Needle coke is a strategic raw material for modern industry. It is mainly used in the production of carbon products used in high-end industries. The carbon products of needle coke have the characteristics of high crystallinity, low ablation, and low thermal expansion coefficient. There are a wide range of high-value applications in fields such as military, national defense, and atomic energy. The economic value of needle coke is extremely high, and the market price of high-end needle coke can reach 50,000 yuan / ton. Graphite electrodes made of high-end needle coke have the characteristics of good heat resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02
CPCC10G53/02
Inventor 陈骜白鹰
Owner 武汉兰兆科技有限公司
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