Subsequent treatment process for joint coke carbonization reaction

A technology of carbonization reaction and treatment process, which is applied in the direction of coking carbonaceous materials, coke ovens, petroleum industry, etc. It can solve the problems of inability to accurately judge the cooling degree of raw coke, low quality of raw coke, and low gas blowing conditions, and achieve carbonization reaction Optimum degree, improved product quality, and consistent cooling speed

Active Publication Date: 2021-06-22
山东京阳科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Disadvantages: no energy saving, high cost; unable to accurately judge the cooling degree of raw coke; low air blowing conditions, resulting in low quality of raw coke

Method used

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  • Subsequent treatment process for joint coke carbonization reaction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] like figure 1 As shown, in the subsequent treatment process of joint coke carbonization reaction, the needle coke raw material enters the coke tower to undergo cracking and condensation reactions after being heated by heat exchange and coking heating furnace, and then cracks to generate needle coke green coke through exothermic and endothermic cracking , the gas blowing conditions after the coke tower reaction are divided into three stages:

[0022] The first stage: first use high-temperature and high-pressure steam to blow air. The high-temperature and high-pressure steam is 2.5MPa and 450°C to maintain the coke formation reaction in the tower;

[0023] The second stage: using medium and low pressure steam, the steam condition is 1.3MPa, 280°C, and continue to purge the incompletely reacted oil and gas;

[0024] The third stage: a large amount of low-pressure steam purging, the steam condition is 0.3MPa, 180 ℃.

[0025] After the blowing condition is completed, water...

Embodiment 2

[0027] like figure 1 As shown, in the subsequent treatment process of joint coke carbonization reaction, the needle coke raw material enters the coke tower to undergo cracking and condensation reactions after being heated by heat exchange and coking heating furnace, and then cracks to generate needle coke green coke through exothermic and endothermic cracking , the gas blowing conditions after the coke tower reaction are divided into three stages:

[0028] The first stage: first use high-temperature and high-pressure steam to blow air. The high-temperature and high-pressure steam is 3.0MPa and 480°C to maintain the coke formation reaction in the tower;

[0029] The second stage: use medium and low pressure steam, the steam condition is 1.5MPa, 300℃, and continue to purge the incompletely reacted oil and gas;

[0030] The third stage: a large amount of low-pressure steam purging, the steam condition is 0.4MPa, 200 ℃.

[0031] After the blowing condition is completed, water is...

Embodiment 3

[0033] like figure 1 As shown, in the subsequent treatment process of joint coke carbonization reaction, the needle coke raw material enters the coke tower to undergo cracking and condensation reactions after being heated by heat exchange and coking heating furnace, and then cracks to generate needle coke green coke through exothermic and endothermic cracking , the gas blowing conditions after the coke tower reaction are divided into three stages:

[0034] The first stage: first use high-temperature and high-pressure steam to blow air, the high-temperature and high-pressure steam is 3.5MPa, 500°C, and maintains the coke formation reaction in the tower;

[0035] The second stage: use medium and low pressure steam, the steam condition is 1.8MPa, 350℃, and continue to purge the incompletely reacted oil and gas;

[0036] The third stage: a large amount of low-pressure steam is purged, and the steam condition is 0.5MPa, 230°C.

[0037] After the blowing condition is completed, wa...

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Abstract

The invention belongs to the technical field of joint coke production, and particularly relates to a subsequent treatment process for joint coke carbonization reaction, and the blowing condition after coke tower reaction is divided into three stages: a first stage is characterized by firstly, blowing with high-temperature and high-pressure steam with the pressure of 2.5-3.5 MPa and the temperature of 400-500 DEG C, and maintaining the green coke reaction in the tower; a second stage is characterized in that medium and low pressure steam is adopted, the steam condition is 1.0-2.0 MPa, and the temperature is 260-380 DEG C, and oil gas which is not completely reacted continues to be purged; and a third stage is characterized in that a large amount of low-pressure steam is blown, and the steam condition is 0.2-0.6 MPa and 150-240 DEG C. The joint coke treated by the method is optimal in carbonization reaction degree and relatively uniform in property, and the property difference of the upper part of green coke is reduced to the greatest extent; green coke cooling adopts a stepped distribution cooling method, the cooling speed is consistent, the internal structure of green coke is uniform, and the particle strength coefficients of the upper part, the middle part and the lower part are not greatly different, so that the product quality is improved.

Description

technical field [0001] The invention belongs to the technical field of joint coke production, and in particular relates to a subsequent treatment process of joint coke carbonization reaction. Background technique [0002] Joint coke is needle coke for ultra-high power graphite electrode joints. Needle coke is a high-quality carbon species vigorously developed in carbon materials and is the main raw material for the production of high-power ultra-high power graphite electrodes. Due to the good graphitization properties of needle coke, high-power and ultra-high-power electrodes produced with it have excellent electrical conductivity, thermal shock resistance and oxidation resistance. Compared with ordinary electrodes, the use of ultra-high power electrodes made of needle coke in electric furnaces can shorten the smelting time by 30-50%, save electricity by more than 10-20%, and increase the production capacity by 1.3 times. The economic benefits are very significant. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B55/00
CPCC10B55/00
Inventor 王洪民杨宗伟石明朋毛全邦李法军王康卢海涛都淑洁张珊珊李洋洋郑建强
Owner 山东京阳科技股份有限公司
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