Device and method for producing high-end graphite carbon material

A graphite carbon, high-end technology, applied in the field of equipment for the 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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  • Device and method for producing high-end graphite carbon material
  • Device and method for producing high-end graphite carbon material
  • Device and method for producing high-end graphite carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Using the refined catalytic oil slurry of a refinery as raw material, the specific properties of the refined oil slurry are shown in Table 1. The pressure at the top of the coking tower is 0.5 MPa, and the coking cycle of coking is 32 hours. According to the three-tower switching method provided by the present invention, the oil slurry When the coke charging time of the coke tower accounts for 50% of the total coke charging time, switch to coking light wax oil to continue coke charging, wherein the temperature at the outlet of heating furnace 1 in step (1) is 420°C-440°C heating-constant temperature process, The heating rate is 5°C / h, the constant temperature time is 12h, the gas velocity in the coke tower is controlled to be 0.05-0.08m / s, and the outlet temperature of the heating furnace 2 in step (2) is 460°C-490°C during the heating-constant temperature process, and the heating rate is 10°C / h, the constant temperature time is 13h, the gas velocity in the coke tower is...

Embodiment 2

[0087] Using the same device and raw materials as in Example 1, the pressure at the top of the coking tower is 0.8MPa, and the coking cycle of coking is 40h. According to the three-tower switching method provided by the present invention, the coke charging time of the coke tower with oil slurry accounts for the total coke charging time. At 50% of the time, switch to coking light wax oil and continue coke filling, wherein the outlet temperature of heating furnace 1 in step (1) is 400°C-460°C heating-constant temperature process, the heating rate is 4°C / h, and the constant temperature time is 5h, The gas velocity in the coke tower is controlled at 0.07-0.10m / s, and the outlet temperature of heating furnace 2 in step (2) is 470°C-510°C heating-constant temperature process, the heating rate is 10°C / h, and the constant temperature time is 16h. The gas velocity is controlled at 0.18-0.25m / s. In steps (1)~(5), the temperature of the 10% distillation point of the coking light wax oil i...

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Abstract

The invention discloses a device for producing a high-end graphite carbon material. The device comprises first to m-th heating units and first to n-th coke towers, m is any integer from 2 to n-1; n isan arbitrary integer of 3 or more; the n-th coke tower is at least communicated with at least two heating units of the m heating units; each coke tower of the n coke towers is respectively communicated with one or more separation towers; the side light wax oil pipelines of one or more separation towers are communicated with the m-th heating unit, the materials in the bottom of one or more separation towers are discharged out of the system through pipelines (or partially discharged out of the system and partially circulated back to the separation towers), and an optional bottom is communicatedwith the i-th heating unit. The device can be used for continuously producing the high-quality high-end graphite carbon material with a stable performance by adopting petroleum or coal series raw materials.

Description

technical field [0001] The invention relates to a device and method for producing high-end graphite carbon materials, in particular to a device and method for continuously producing high-end graphite carbon materials with stable performance using petroleum-based or coal-based raw materials. 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 cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/205C10G53/02
CPCC01B32/205C10G53/02
Inventor 赵日峰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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