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Technique for producing high-end graphite carbon material

A graphite carbon, high-end technology, applied in the field of production of high-end graphite carbon materials, can solve the problems of unresolved needle coke operation fluctuations, unstable performance of needle coke products, etc.

Active Publication Date: 2020-06-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned methods all use the conventional one-furnace two-tower delayed coking method to produce needle coke, and none of them solves the problem of large operational fluctuations caused by variable temperature and pressure changes in the production process of needle coke, and the common problem of unstable performance of needle coke products

Method used

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  • Technique for producing high-end graphite carbon material
  • Technique for producing high-end graphite carbon material
  • Technique for producing high-end graphite carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Catalytic oil slurry from a refinery was used as raw material, and the specific property analysis of the oil slurry is shown in Table 1.

[0091] The temperature of the 90% distillation point of the light distillate oil on the tower of the vacuum deep drawing device is 360°C, the temperature of the 10% distillation point of the heavy distillate oil at the bottom of the tower is 480°C, and the mixing mass ratio of the raw material to the vacuum residue is 1:0.5. The temperature of the 10% distillation point of the pressed residue is 500°C, and the heavy distillate is circulated at the bottom of the fractionating tower to control the temperature at the bottom of the fractionating tower to be 355°C. No abnormality was found until 30 days after the device was started.

[0092] Hydrotreating unit catalysts adopt CEN, FZC, ZTN, ZTS series residual oil hydrogenation catalysts produced by Sinopec Catalyst Branch Company, including protective agents, demetallization catalysts, d...

Embodiment 2

[0109] Catalytic oil slurry from a refinery was used as raw material, and the specific property analysis of the oil slurry is shown in Table 6.

[0110] The temperature of the 90% distillation point of the light distillate oil on the tower of the vacuum deep drawing device is 390°C, the temperature of the 10% distillation point of the heavy distillate oil at the bottom of the tower is 500°C, and the mixing mass ratio of the raw material to the vacuum residue is 1:2.0. The temperature of the 10% distillation point of the pressed residue is 550°C. The heavy distillate is circulated at the bottom of the fractionating tower to control the bottom temperature of the fractionating tower to be 320°C. No abnormality was found until 30 days after the device was started.

[0111] Hydrotreating unit catalysts adopt CEN, FZC, ZTN, ZTS series residual oil hydrogenation catalysts produced by Sinopec Catalyst Branch Company, including protective agents, demetallization catalysts, desulfurizat...

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Abstract

The invention discloses a combined method for producing a high-end graphite carbon material. The method comprises the following steps: fractionating raw oil and vacuum residuum to obtain heavy distillate oil and light distillate oil; discharging the heavy distillate out of the device, optionally and partially circulating the heavy distillate oil back to the bottom of a fractionating tower, feedingthe light distillate oil into a hydrotreating device, performing a hydrotreating reaction in the presence of hydrogen and a hydrotreating catalyst, taking the hydrotreated material as a coking raw material (also called as a green coke raw material); and feeding the coking raw material into a coking device, and carrying out reactions to obtain the high-end graphite carbon material. The method canbe used for continuously producing the high-quality high-end graphite carbon material with a stable performance.

Description

technical field [0001] The invention relates to a process method for producing high-end graphite carbon materials, in particular to a process method for continuously producing high-end graphite carbon materials with stable performance. Background technique [0002] Needle coke is mainly used to produce high-power and ultra-high-power graphite electrodes. With the development of the steel age, the output of steel scrap has gradually increased, which has promoted the development of electric furnace steel, and will inevitably increase the amount of graphite electrodes, especially high-power and ultra-high-power electrodes, and the demand for needle coke will also continue to increase. [0003] CN200810017110.3 discloses a method for preparing needle coke. The fraction or residual oil rich in aromatics is subjected to a delayed coking treatment with a certain temperature rise program, and then the obtained green coke is calcined to obtain a needle-shaped coke with a high mesopha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/205C10G67/02
CPCC01B32/205C10G67/02
Inventor 曹东学方向晨初人庆郭丹宋永一刘继华勾连忠武云
Owner CHINA PETROLEUM & CHEM CORP
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