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Method for preparing needle coke by magnetization reaction kettle

A reaction kettle and a reactive technology, which is applied in the field of needle coke preparation devices, can solve the problems of reducing production pressure and poor needle structure, and achieve the effects of low system pressure, improved needle structure, and improved graphitization performance

Inactive Publication Date: 2013-03-13
FANGDA CARBON NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following deficiencies: (1) Although the needle coke produced under the pressure of 1.0-2.0MPa has high strength, the needle-like structure is not good. In addition, considering that the higher the pressure, the higher the requirements for the reaction vessel, the production pressure should be reduced

Method used

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  • Method for preparing needle coke by magnetization reaction kettle
  • Method for preparing needle coke by magnetization reaction kettle
  • Method for preparing needle coke by magnetization reaction kettle

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0020] Embodiment 1: A kind of magnetization reactor, comprises reactor body 1, is provided with pressure relief valve 2, pressure gauge 3, inert gas inlet 4 on reactor body 1, is arranged symmetrically on the body side of reactor body 1 Magnetization device 5. The magnetizing device is an electromagnet with a magnetic induction of 4mT.

Embodiment 2

[0021] Embodiment 2: A magnetization reaction kettle, the magnetization device is an electromagnet, and the magnetic induction is 15mT. All the other structures are the same as in Example 1.

Embodiment 3

[0022] Embodiment 3: A magnetization reaction kettle, the magnetization device is an electromagnet, and the magnetic induction is 25mT. All the other structures are the same as in Example 1.

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Abstract

The invention relates to a device and a method for preparation of needle coke. A magnetization reaction kettle comprises a reaction kettle body, which is equipped with a pressure release valve, a pressure gauge, and an inert gas inlet. The reaction kettle is mainly characterized in that magnetization device are symmetrically arranged on two sides of the reaction kettle body. The device and the method provided in the invention have the advantages that: (1) the system has a small pressure, easy controllability, and high security; (2) the prepared needle coke has a good needle structure, a low thermal expansion coefficient, and high strength; and (3) the prepared needle coke has significantly improved appearance and coking rate, and the graphitization property at the later period can be improved.

Description

technical field [0001] The invention relates to a device for preparing needle coke and a preparation method thereof. Background technique [0002] Needle coke is mainly used to produce graphite electrodes for blast furnace steelmaking. The strength and thermal shock resistance of graphite electrodes largely depend on the properties of needle coke. Due to the constraints of foreign needle coke technology fortresses, the United States, Japan, and the United Kingdom have monopolized 80-90% of the global needle coke market, and their annual sales are limited. Domestic needle coke manufacturers have not yet broken through key technologies, and the appearance, thermal expansion coefficient, needle structure, product strength, and particle size of the needle coke produced are far inferior to those of foreign companies. [0003] The traditional kettle-type coking process for producing needle coke is to fill the coking kettle with raw material oil, control the pressure in the reacto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B55/00B01J19/08
Inventor 陶霖王万平张桂兰
Owner FANGDA CARBON NEW MATERIAL CO LTD
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