What does the density of tar depend on?
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Should it be linked to the coking workshop? This month, a tar density of 1.13≤ρ≤1.225 g/cubic centimeter is required to be considered acceptable, with a target acceptance rate of 90%. It is only linked to the coking workshop, not to the chemical production workshop. I wonder how other manufacturers conduct evaluations in this regard – is this reasonable? This post was last edited by Wulong Dao on 2009-3-12 09:27]
Tar density is related to its composition, while tar yield is related to the retorting temperature.
Tar density is related to the carbonization temperature, while tar yield is related to the type of coal.
Tar is a mixture of various components, and its density corresponds to the proportion of each substance in that mixture! The temperature in the furnace roof space determines the composition of the gas. So it’s correct to link it to the coking workshop!
The composition and physical properties of coal tar vary widely, depending mainly on the coal blending process and coking operations. As the coking temperature increases, the yield of tar decreases while its density increases. (In my opinion,) in our plant, the cold drum section responsible for testing tar is required to conduct tests once per shift for moisture, density, viscosity, toluene insolubles, and ash content; any failure to meet the standards results in a fine of 10 yuan for the operator, 20 yuan for the section leader, and 30 yuan for the supervisor. This post was last edited by Gao Xianzheng on 2009-3-12 at 13:00
Tar density is related to the temperature at the top of the furnaces in the coking plant, but the factory sets quality standards for tar that apply only to the recovered tar and not to that used in coking, which is clearly unfair.
Tar is related to the following factors: In the process of coal tar formation, its density is influenced by factors such as the type of coke oven, coking temperature, coking time, and the properties of the coal used； For coal tar in its physical form, density is related to moisture and composition.
A comprehensive consideration is necessary: although the quality of tar is closely related to various operations in the coke oven, factors such as whether the recovery plant can supply clean recycled ammonia water, whether gas can be removed in a timely manner, as well as processes like static slag removal and heating for dehydration, are all related to the quality of tar.
Tar density is related to its composition, and the composition is greatly influenced by the type of coal, the coking temperature, and the extraction methods. Of course, it is also related to the coking process, as well as the heating regime...
There is a strong relationship between coal tar density and moisture content. Because the water is not effectively removed from coal tar, it exists in an emulsified state.