Experts, what are the factors that affect the methane content in gasifier products?
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As the title suggests, what are the factors that affect the methane content in gasifier products? How should it be controlled? Please give me some advice. :handshake
1. An increase in the oxygen-to-coal ratio results in a decrease in methane content. When the oxygen-to-carbon ratio exceeds 0.96, the methane content remains essentially constant; 2. As the coal slurry concentration increases, the methane content decreases
1 Coal quality: generally, the higher the volatile matter content, the higher the CH4 content； Certain components in coal (such as Fe, Al, Si, etc.) can act as catalysts for the methanation reaction; if the levels of these components in coal are high, the CH4 content is also high. 2 Pressure: the higher the pressure, the higher the CH4 content. 3 Temperature: the lower the temperature, the higher the CH4 content. Also, the answer for floor 2 is correct. The essence of the answer on the second floor is the temperature factor. This post was last edited by haichuaner on 2009-3-9 23:26]
Additional note: The choice of gasifier has a certain impact on the methane content; for example, autothermal gasifiers result in a high methane content.
The higher the temperature, the lower the methane content; above 1300, there is basically no methane left
Affected by temperature, the lower the temperature, the higher the methane content; coal type is also a factor
There are generally three factors that affect methane in gas. 1. The quality of coal has an impact; generally, the higher the volatile content, the higher the methane content. Meanwhile, the metal components in the ash can sometimes act as catalysts, promoting the methanation reaction ； 2. Pressure effect: Methane production is a reaction that results in volume reduction; the higher the pressure, the higher the methane content, although the change is not significant at high pressures ； 3. Temperature effect: The higher the temperature, the lower the methane content. Generally, when the temperature exceeds 1300 degrees, the methane content is below 1000 ppm; further increases in temperature result in little change.