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Method for preparing oil needle coke raw material by hydrogenation of aromatic oil

A technology for oil-based needle coke and aromatic oil, which is applied in the treatment of hydrocarbon oil, coking carbonaceous materials, and hydrotreating processes, etc., can solve the problems of high sulfur content and poor quality, and achieve low non-condensable gas yield, Low operating pressure and load reduction effect

Inactive Publication Date: 2018-12-21
SHANDONG YIDA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for producing oil-based needle coke raw material through hydrogenation of aromatic oil to solve the defects of high sulfur content and poor quality of the raw material for needle coke production.

Method used

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  • Method for preparing oil needle coke raw material by hydrogenation of aromatic oil
  • Method for preparing oil needle coke raw material by hydrogenation of aromatic oil
  • Method for preparing oil needle coke raw material by hydrogenation of aromatic oil

Examples

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Effect test

Embodiment 1

[0022] Shandong Yida New Material Co., Ltd. uses the FCC oil slurry (sulfur content of 1.5%) in Shandong District 1 to mix the aromatic oil after the supercritical extraction unit with the hydrogen from the hydrogen production unit in the mixer (mass ratio: 100). :0.8) After being heated to 320℃ through a heating furnace, it enters the aromatic oil hydrogenation reactor (reactor for short). The inlet pressure of the reactor is 7.0MPa. The ratio of cobalt-molybdenum and nickel-molybdenum catalysts in the reactor is 1:3 , Desulfurization and denitrification are carried out in the reactor, the removal rate is over 87%, and the sulfur content is 0.2%. The reaction product flows out from the lower part of the reactor and enters the hot high-separation tank to achieve vapor-liquid separation. After the liquid phase is decompressed, it is sent to the hot low-separation tank for further flash evaporation. The hot low-separation gas phase enters the cold low-separation tank; After press...

Embodiment 2

[0026] Shandong Yida New Materials Co., Ltd. uses the FCC oil slurry (sulfur content 1.1%) in Northeast Zone 1 to mix the aromatic oil extracted by the supercritical extraction unit with the hydrogen from the hydrogen production unit (mass ratio: 100:0.7) and then heat it The furnace is heated to 280°C and enters the aromatic oil hydrogenation reactor (reactor for short). The inlet pressure of the reactor is 6.0 MPa. The ratio of cobalt-molybdenum and nickel-molybdenum catalysts in the reactor is 1:3, which is carried out in the reactor. Desulfurization and denitrification, the removal rate is over 68%, and the sulfur content is 0.35%. The reaction product flows out from the lower part of the reactor, and enters the hot high separation tank to achieve vapor-liquid separation. After the liquid phase is decompressed, it is sent to the hot low separation tank for further flash evaporation, and the hot low separation gas enters the cold low separation tank; After pressing, enter th...

Embodiment 3

[0030] Shandong Yida New Material Co., Ltd. uses the FCC slurry (sulfur content of 2%) in Shanghai Zone 2 to mix the aromatic oil extracted by the supercritical extraction unit with the hydrogen from the hydrogen production unit (mass ratio: 100:0.6) and then heat it The furnace is heated to 280°C and enters the aromatic oil hydrogenation reactor (reactor for short). The inlet pressure of the reactor is 5.0MPa. The ratio of cobalt-molybdenum and nickel-molybdenum catalysts in the reactor is 2:3, which is carried out in the reactor. Desulfurization and denitrification, the removal rate is over 78%, and the sulfur content is 0.45%. The reaction product flows out from the lower part of the reactor, and enters the hot high separation tank to achieve vapor-liquid separation. After the liquid phase is decompressed, it is sent to the hot low separation tank for further flash evaporation, and the hot low separation gas enters the cold low separation tank; After pressing, enter the frac...

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Abstract

The invention belongs to the technical field of production of needle coke, in particular to a method for preparing oil needle coke raw material by hydrogenation of aromatic oil. The method has the advantages that the sulfur and nitrogen can be removed by simple hydrogenation treatment; the unsaturation of aromatic hydrocarbon is guaranteed, so that an aromatic hydrocarbon oil filling device is provided with a reactor, thereby completing the task of two to three conventional hydrogenation reactors by one aromatic hydrocarbon oil hydrogenation reactor; the high and low partial pressure technology is adopted, the energy-saving and consumption-decreasing effects are realized, the sulfur and nitrogen are removed in the aromatic hydrocarbon oil hydrogenation reactor, the removal rate reaches 80%or above, and the content of sulfur is lower than 0.2%.

Description

Technical field [0001] The invention belongs to the technical field of needle coke production, and specifically relates to a method for preparing oil-based needle coke raw materials by hydrogenation of aromatic oil. Background technique [0002] Needle coke is a high-quality carbon material, named after its slender needle-like structure after crushing. Needle coke has a metallic luster in appearance and a layered structure inside. It has good orientation, electrical and thermal conductivity. Therefore, it is the main raw material for manufacturing ultra-high power electrodes for steelmaking. Using ultra-high power electrodes to make steel, the smelting time can be shortened by 2 / 3 and the power consumption can be reduced by 50%. [0003] At present, high-quality oil-based needle coke has not been produced in China. The main reason is that there is no good raw material for the production of needle coke. The raw material of oil-based needle coke is the heavy oil-FCC slurry produced ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B55/00C10G67/02
CPCC10B55/00C10G67/02
Inventor 刘涛徐金城李慎耐李永涛郭冲
Owner SHANDONG YIDA NEW MATERIAL
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