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A production process of coal-based needle coke

A production process and needle coke technology, applied in the field of coal-based needle coke production technology, can solve the problems of high cost, low yield, unfavorable market competition, etc., achieve low cost, increase coke forming speed, and simple process Effect

Active Publication Date: 2021-05-04
上海瑞盛联信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, coal-based needle coke is mainly used in China, but the preparation process of coal-based needle coke of various manufacturers is classified as confidential or protected by patents, and the production cost is relatively high and the yield is low. Conducive to the current fierce market competition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A production process of coal-based needle coke, comprising the following steps:

[0016] S1. Take out the coal tar, low-temperature coal tar pitch, and solvent according to the ratio of 7:3.2:0.6, and mix them evenly, then put them into a mixer, heat to 180°C, keep stirring at this temperature for 3-4 hours; then put them into the sedimentation Settling in the tank to obtain the light phase and the heavy phase, then the light phase and the heavy phase are respectively discharged from the settling tank and stored separately; the solvent is anthracene oil;

[0017] S2. Put the light phase obtained in S1 into the raw oil buffer tank, keep it at 180°C, and then pump it to the dehydration tower through the raw oil pump, separate the water and the light phase in the dehydration tower, and then introduce the light phase into the heat exchanger for heat exchange After reaching 240°C, it enters the heating furnace. After being heated to 340°C by the heating furnace, it enters th...

Embodiment 2

[0023] A production process of coal-based needle coke, comprising the following steps:

[0024] S1. Take out the coal tar, low-temperature coal tar pitch, and solvent in a ratio of 8:4:0.7, and mix them evenly, then put them into a mixer, heat to 200°C, and keep stirring at this temperature for 4 hours; then put them into a settling tank Settling to obtain a light phase and a heavy phase, then the light phase and the heavy phase are respectively discharged from the settling tank and stored separately; the solvent is anthracene oil;

[0025] S2. Put the light phase obtained in S1 into the raw oil buffer tank, keep it at 200°C, and then pump it to the dehydration tower through the raw oil pump, separate the water and the light phase in the dehydration tower, and then introduce the light phase into the heat exchanger for heat exchange After reaching 230°C, it enters the heating furnace. After being heated to 320°C by the heating furnace, it enters the secondary distillation tower...

Embodiment 3

[0031] A production process of coal-based needle coke, comprising the following steps:

[0032] S1. Take out the coal tar, low-temperature coal tar pitch, and solvent according to the ratio of 6.5:3:0.7, and mix them evenly, then put them into a mixer, heat to 160°C, and keep stirring at this temperature for 3 hours; then put them into a settling tank Settling to obtain a light phase and a heavy phase, then the light phase and the heavy phase are respectively discharged from the settling tank and stored separately; the solvent is anthracene oil;

[0033] S2. Put the light phase obtained in S1 into the raw oil buffer tank, keep it at 160°C, and then pump it to the dehydration tower through the raw oil pump, separate the water and the light phase in the dehydration tower, and then introduce the light phase into the heat exchanger for heat exchange After reaching 260°C, it enters the heating furnace. After being heated to 350°C by the heating furnace, it enters the secondary dist...

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Abstract

The invention discloses a production process of coal-based needle coke, comprising the following steps: S1, taking out coal tar, low-temperature coal tar pitch, and a solvent according to the ratio of 6-8:3-4:0.5-1, and mixing them uniformly, Then settle to obtain light phase and heavy phase; S2, prepare light oil; S3, mix light oil with coal-measure needle coke particles, the particle size D50 of coal-measure needle coke particles is between 20‑50 mm, and light oil Mix uniformly with the coal-based needle coke particles according to the ratio of 1-2:8-10; S4, separate the solid-liquid mixture mixed with S3, filter out the liquid phase, retain the solid phase, and mix the solid phase and the asphalt prepared in S2 according to 1: 1.5‑2 mixed evenly to obtain needle coke raw material; S5, hydrogenate the needle coke raw material, add Ni‑Mo catalyst, then heat to 300‑400 ° C, and maintain the pressure of 10‑15Mpa , take it out after stirring for 1-2 hours; S6, put the needle coke raw material treated in S5 into the coking tower, heat it to 1400-1500°C to make coke, keep the air pressure of 100-150MPa, and take it out after calcination for 2-3 hours , cooling to obtain needle coke.

Description

technical field [0001] The invention relates to needle coke preparation technology, in particular to a production process of coal series needle coke. Background technique [0002] Needle coke is a high-quality variety that is vigorously developed among carbon materials. Its appearance is a silver-gray porous solid with metallic luster. The width ratio is like a fibrous or needle-like texture, and it feels smooth to the touch. It is a raw material for the production of high-end carbon products such as ultra-high-power electrodes, special carbon materials, carbon fibers and their composite materials. According to different production raw materials, needle coke can be divided into oil-based needle coke and coal-based needle coke. Needle coke produced with petroleum residue as raw material is oil-based needle coke; needle coke produced with coal tar pitch and its fractions as raw material is coal-based needle coke. [0003] At present, coal-based needle coke is mainly used in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B55/00C10C1/18C10C3/00C10C3/06C10C3/08
CPCC10B55/00C10C1/18C10C3/00C10C3/06C10C3/08
Inventor 武建军
Owner 上海瑞盛联信息科技有限公司
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