What is the impact of sulfur content in coal on gas volume? ?
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Our company has observed during the gas production process that an increase in the sulfur content in the coal rods leads to a significant reduction in the volume of gas produced! ! What is the impact of sulfur content in coal on gas volume? ?
The amount of sulfur has nothing to do with the gas production volume, right? Can’t your comparison be a coincidence?
The level of sulfur content has no relation to the gas production volume; any apparent linear relationship is purely coincidental. :lol 1. The sulfur content only causes corrosion in pipes, and the extent of this corrosion varies (depending on the material of the pipe) ； 2. The sulfur content has a significant impact on the lifespan of the catalysts used later on ； 3. The level of sulfur content has a significant impact on the emission standards for waste gas and wastewater ； Therefore, for general gasification, low-sulfur coal is the best choice, and the sulfur content is also an essential factor in selecting the type of coal.
The level of sulfur content is indeed related to the volume of gas; during the gasification process, COS and H2S are generated, and these substances require a certain amount of available gas, namely CO and H2. The higher the sulfur content, the greater this consumption is. The original poster has observed this very carefully.
I agree with the opinion from the fourth floor: sulfur in coal exists in the form of elemental sulfur, and after conversion to syngas, most of it turns into H2S, with only a very small amount converting into COS
The key issue is that some catalysts used in downstream processes are sensitive to sulfur, which can easily lead to catalyst poisoning.
Primarily, synthetic catalysts are quite sensitive to sulfur; therefore, sulfur-resistant catalysts are generally used in conversion processes. As a result, a corresponding desulfurization process needs to be implemented before proceeding with the synthesis.
Most of the sulfur in coal is converted to H2S during the reaction process, with a smaller portion being converted to carbonyl sulfide, or COS. If the sulfur content in coal increases, the amounts of H2S and COS produced will also increase, which in turn leads to an increase in the amounts of hydrogen and carbon elements that are expelled along with sulfur. This results in a decrease in the effective gas volume, although the extent of this decrease is limited. Therefore, I am skeptical about the claim that the gas volume decreases \"significantly\" as suggested by the original poster. Also, when the original poster mentions “volumetric capacity,” does it refer to the total volumetric capacity or the effective volumetric capacity?
Agree with the view from floor 8. The level of sulfur content has a limited impact on gas production, but very high sulfur levels can cause significant harm; meanwhile, too low a sulfur content can also lead to desulfidation of the catalysts in the downstream conversion system. Therefore, it is acceptable for the sulfur content in coal to remain within a certain range.