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What are the basic indicators of petroleum coke?

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What are the basic indicators of petroleum coke?

Release date:2016-09-26 Author: Click:

Coking petroleum coke is mainly for users, focusing on: sulfur content, ash and volatile points, and sometimes including water and true density;

Specific content as follows:

1) volatile

If the amount of volatile contained in the petroleum coke is too much, it is easy to break when the coke is calcined. Coke column reaction temperature will affect the volatile content of coke.

2) sulfur content

Sulfur content is an important quality index of petroleum coke. For example, in the production of Graphite Electrode coke, sulfur residue in the graphite electrode, when the electrode in high temperature above 1500 DEG C, sulfur will break out, the expansion of the crystal electrode, then cooling and contraction, resulting in rupture of electrode. The sulfur content of coke is related to the pitch and char value of raw oil. Sulfur content of the same two kinds of coking raw oil, high asphaltene content, high residual carbon value of the raw material production of coke sulfur content is also higher. The temperature of the coke tower has an effect on the sulfur content of coke, coke tower temperature rises, increased from evaporation of coke in low sulfur heavy oil, so the sulfur content of Coke will increase accordingly.

3) ash

During the process of high temperature graphite, some ash will evaporate and form pores, so that the mechanical strength and electrical properties of the finished product will be reduced. In addition, the existence of ash in the graphite electrode will affect the purity of metallurgical products.

True density of 4)

The coke block of the unit volume is calcined at a high temperature of 1300 degrees Celsius, and the weight of the coke is called the true density of petroleum coke after five hours. Its units are g/cm3, generally above 2, its size can directly reflect the strength and quality of coke.

Delayed coking production of petroleum coke is coke, to other products used in the production of electrode smelting, after calcination, be cooked coke, also called calcined coke. Petroleum coke has no international uniform quality standards and testing methods. China is now the standard name of the standard petroleum coke delayed petroleum coke (coke), belonging to the People's Republic of China petroleum and chemical industry standards, numbered SH0527-92.

The standard of the first grade and qualified in the 1A and 1B coke suitable for production of normal power graphite electrode in steel-making industry, can also be used for carbon production of aluminum in aluminum industry.

Qualified products 2A and 2B used for making carbon coke aluminum in aluminum smelting industry.

3A and 3B coke used in the qualified products for the production of carbide or fuel in the chemical industry. Coking petroleum coke is mainly for users, focusing on: sulfur content, ash and volatile points, and sometimes including water and true density;

Specific content as follows:

1) volatile

If the amount of volatile contained in the petroleum coke is too much, it is easy to break when the coke is calcined. Coke column reaction temperature will affect the volatile content of coke.

2) sulfur content

Sulfur content is an important quality index of petroleum coke. For example, in the production of Graphite Electrode coke, sulfur residue in the graphite electrode, when the electrode in high temperature above 1500 DEG C, sulfur will break out, the expansion of the crystal electrode, then cooling and contraction, resulting in rupture of electrode. The sulfur content of coke is related to the pitch and char value of raw oil. Sulfur content of the same two kinds of coking raw oil, high asphaltene content, high residual carbon value of the raw material production of coke sulfur content is also higher. The temperature of the coke tower has an effect on the sulfur content of coke, coke tower temperature rises, increased from evaporation of coke in low sulfur heavy oil, so the sulfur content of Coke will increase accordingly.

3) ash

During the process of high temperature graphite, some ash will evaporate and form pores, so that the mechanical strength and electrical properties of the finished product will be reduced. In addition, the existence of ash in the graphite electrode will affect the purity of metallurgical products.

True density of 4)

The coke block of the unit volume is calcined at a high temperature of 1300 degrees Celsius, and the weight of the coke is called the true density of petroleum coke after five hours. Its units are g/cm3, generally above 2, its size can directly reflect the strength and quality of coke.

Delayed coking production of petroleum coke is coke, to other products used in the production of electrode smelting, after calcination, be cooked coke, also called calcined coke. Petroleum coke has no international uniform quality standards and testing methods. China is now the standard name of the standard petroleum coke delayed petroleum coke (coke), belonging to the People's Republic of China petroleum and chemical industry standards, numbered SH0527-92.

The standard of the first grade and qualified in the 1A and 1B coke suitable for production of normal power graphite electrode in steel-making industry, can also be used for carbon production of aluminum in aluminum industry.

Qualified products 2A and 2B used for making carbon coke aluminum in aluminum smelting industry.

3A and 3B coke used in the qualified products for the production of carbide or fuel in the chemical industry.


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