JPS6033867B2 - Coke manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Object of the Invention: Field of Application, Prior Art, etc.) The present invention relates to a method for producing coke.

It is widely practiced to obtain leprosy hydrocarbon fuel gas and oil coke by high-temperature cracking of high boiling point petroleum fractions, but when this oil coke is gasified for the purpose of obtaining further fuel gas, a large amount of fine particles is Coke is generated. Since this powdered coke consists of fine particles of about 10 mm, it is difficult to handle it even if it is to be disposed of, and if it is released into the atmosphere, it pollutes the atmosphere and causes a pollution problem. In the present invention, such powdered coke is mixed into coking coal and used for producing coke. According to the present invention, powdered coke is not scattered or released into the atmosphere or treated as waste, so it is not only possible to eliminate problems that cause known problems, but also prevent powdered coke from being disposed of as waste. Since it is used in the production of coke, it also brings great economic benefits in line with the era of resource conservation.
(Hereinafter, the structure and operation of the invention) The present invention adjusts the humidity of dusty coke produced when oil coke is gasified to a moisture content in the range of 25 to 35%, homogeneously mixes it with coking coal, and then carbonizes it. The gist of this is that coke product can be obtained by

As mentioned above, the powdered coke produced when oil coke is gasified is a fine particle of about 10 French particles, so it is not easy to handle it. Particularly, the fine coke captured from the gas by a centrifugal dust remover has almost no moisture, so depending on its handling, much of it will scatter, impairing the working environment and causing air pollution. Adding sufficient moisture to such powdered coke can temporarily prevent it from scattering, but if it is used as is for producing coke, if it is carbonized without being mixed uniformly with coking coal, spots will be unevenly distributed in the coke product. When the coke is broken, the powdered coke segregates without caking, resulting in an extremely poor quality of product coke. The inventors of the present invention have diligently investigated the cause of the appearance of spots on product coke, and have found that this is due to the moisture content of powdered coke. Through repeated experiments, the present inventors have shown that if the moisture content of powdered coke is within a certain range, it will be uniformly mixed with coking coal, and a product coke of good quality will be obtained without the above-mentioned spotting phenomenon. I learned it. In other words, if the moisture content of powdered coke is controlled within the range of 25 to 35%, the mixture with coking coal will be uniform, and the quality of the product coke obtained by carbonization will not deteriorate; It has been found that by controlling the humidity, it is also possible to prevent the above-mentioned scattering during handling. Such humidity control is an example of fine coke that contains almost no moisture, which is obtained by capturing fine coke floating in gas with a centrifugal dust remover. Generally, powdered coke contains about 50% water, but in this case, high quality coke cannot be produced unless the water content is reduced to the above range. Moisture 25 in either case
If the humidity is adjusted to less than %**, dust will be generated and handling will be difficult.If the humidity is adjusted to a moisture content of 35% or more, non-caking spots will segregate in the product coke, causing the product coke to deteriorate. Quality deteriorates significantly. In the following table, "B" represents an example of the present invention in which 4 to 6% of moisture-adjusted powdered coke is mixed with coking coal consisting of strongly coking coal and weakly coking coal, and other examples. This is a comparison of “A” and “C”. It should be noted that the above-mentioned embodiments are merely examples, and for example, the mixed amount of powdered coke may be increased in any amount depending on the use of the product coke.

As can be understood from the above table, the product coke according to the present invention does not exhibit any spotting phenomenon, and its strength is no different from that of ordinary coke "A". (Effects of the Invention Below) As described above, the present invention produces product coke by mixing the powdered coke as the waste with coking coal.
To produce coke of good quality without generating so-called industrial waste, without causing deterioration of the working environment due to the scattering and release of powdered coke, or even causing air pollution problems, and using such waste. It has the major feature of being able to

Claims (1)

[Claims] 1 Size approximately 10 generated when oil coke is gasified
The humidity of μ fine coke is adjusted to a moisture content of 25% to 35%,
A method for producing coke, characterized in that coke is homogeneously mixed with coking coal and then carbonized to obtain product coke.