The impact of pressure on the gasifier
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The book states that increasing the pressure in the gasification furnace will prolong the residence time of the materials within it; I have some doubts about this. Increasing the pressure merely raises the concentration of the reactants, while the residence time of the materials in the furnace depends on the amount of coal fed into it as well as the volume of the furnace. In a furnace of the same size, increasing the pressure alone will not extend the residence time of the materials. What do you all think? ????????
It is likely that, at the same feed rate – with 1 ton of coal being fed per minute and a system pressure of 2.0 Mpa – the gas emerges from the gasification furnace within 1 minute. Now the pressure has been increased to 2.2, and the gas residence time has been increased to 70 s. After reaching equilibrium, although both the feed rate and the discharge rate remain unchanged, the amount of gas remaining in the furnace increases. The residence time per gas molecule has increased
It shouldn’t be about gas compression, right? Do anyone else have different opinions?
I still don’t quite understand it\ud83d\ude0a