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Method of producing carbon material

A material and coke tower technology, applied in the production of carbon materials, can solve the problems of high thermal expansion system and unstable needle coke streamlined texture, so as to increase product yield, reduce isotropic coke production, and improve product quality.

Active Publication Date: 2020-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The needle coke prepared by the above method has shortcomings such as unstable streamlined texture and high thermal expansion system, and the comprehensive performance of needle coke needs to be further improved

Method used

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  • Method of producing carbon material
  • Method of producing carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Catalytic oil slurry from a refinery was used as raw material, and the specific properties of the oil slurry are shown in Table 1. The temperature of the 10% distillation point of the vacuum residue is 500°C, the mass ratio of the catalytic oil slurry to the vacuum residue is 1:0.3, and the temperature of the 10% distillation point of the light distillate oil on the third tower of the vacuum deep drawing device is 220°C. The temperature of the 90% distillation point is 310°C, the 10% distillation point of the middle distillate is 320°C, the 90% distillation point is 450°C, and the 10% distillation point of the bottom heavy distillate is 460°C. The middle distillate oil enters the hydrotreating unit 7 through the pipeline 5, and the catalyst bed of the hydrotreating unit is filled as follows: a total of four reactors of the unit are respectively filled with a protective agent, a metal removal agent, a desulfurizer and a denitrification agent, and the filling volume ratio ...

Embodiment 2

[0035] Catalytic oil slurry from a refinery was used as raw material, and the specific properties of the oil slurry are shown in Table 1. The temperature of the 10% distillation point of the vacuum residue is 530°C, the mass ratio of the catalytic oil slurry to the vacuum residue is 1:0.6, and the temperature of the 10% distillation point of the light distillate oil on the third column of the vacuum deep drawing device is 230°C. The temperature of the 90% distillation point is 350°C, the 10% distillation point of the middle distillate is 360°C, the 90% distillation point is 480°C, and the 10% distillation point of the bottom heavy distillate is 490°C. The middle distillate oil enters the hydrotreating unit 7 through the pipeline 5, and the catalyst bed of the hydrotreating unit is filled as follows: a total of four reactors of the unit are respectively filled with a protective agent, a metal removal agent, a desulfurizer and a denitrification agent, and the filling volume ratio...

Embodiment 3

[0037] Catalytic oil slurry from a refinery was used as raw material, and the specific properties of the oil slurry are shown in Table 1. The temperature of the 10% distillation point of the vacuum residue is 540°C, the mass ratio of the catalytic oil slurry to the vacuum residue is 1:1, and the temperature of the 10% distillation point of the light distillate on the third tower of the vacuum deep drawing device is 240°C. The temperature of the 90% distillation point is 380°C, the 10% distillation point of the middle distillate is 390°C, the 90% distillation point is 490°C, and the 10% distillation point of the bottom heavy distillate is 500°C. The middle distillate oil enters the hydrotreating unit 7 through the pipeline 5, and the catalyst bed of the hydrotreating unit is filled as follows: a total of four reactors of the unit are respectively filled with a protective agent, a metal removal agent, a desulfurizer and a denitrification agent, and the filling volume ratio is 5:...

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Abstract

The invention discloses a method for producing a carbon material. The method comprises the following steps: mixing raw oil with a certain proportion of vacuum residuum, and separating out light distillate oil, middle distillate oil and tower-bottom tail oil through a reduced-pressure distillation device; allowing the reduced-pressure middle distillate oil to enter a hydrotreating device; separating at least hydrogenated light distillate oil and hydrogenated heavy distillate oil from a liquid-phase product obtained after hydrotreatment through a fractionating device; mixing the hydrogenated heavy distillate oil and the light distillate oil obtained after reduced-pressure distillation to form an intermediate-phase material, heating the intermediate-phase material by a heating furnace a and then allowing the intermediate-phase material to enter a coke tower; allowing coking gas generated by the coke tower to pass through a coking fractionating tower to obtain coker gas oil; mixing the coker gas oil and the hydrogenated light distillate oil to obtain a mixture serving as a coke drawing material; heating the coke drawing material by using a heating furnace b and then allowing the coke drawing material to enter a coke tower; and sequentially completing an intermediate phase forming stage and a coke drawing stage in the coke tower so as to obtain needle coke. The method can be used for continuously producing the high-quality high-end carbon material with stable performance.

Description

technical field [0001] The invention relates to a method for producing carbon materials, in particular to a method for producing high-end needle coke. 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] CN201110449286.8 discloses a method for producing homogeneous petroleum needle coke. The raw material for producing needle coke is heated to a relatively low temperature of 400-480°C in a heating furnace and then enters the coking tower. The coking raw material forms a flowable mesophase liquid crystal ; After the low-temperature fresh raw material feeding stage is compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00C10G9/00C10B55/00
CPCC10B55/00C10G9/005C10G69/00
Inventor 初人庆郭丹方向晨乔凯
Owner CHINA PETROLEUM & CHEM CORP
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