Several issues in continuous gasification synthesis shift reaction
Thread Content
I’m just starting to learn about *transformations, and I have a question: Is the hydrogen in crude gas brought in by the gasification unit? Does the medium-pressure steam (3.5 MPa/above 400 bar) supplied to the inlet serve to adjust the water-vapor ratio or to lower the temperature (with the reaction temperature in the catalyst layer being around 445°C)? What factors affect the moisture ratio (when there are no significant pressure changes)? Please help answer this question. Thank you. The pressure in the conversion section should be 3.8–3.35
I hope the explanation is clearer :)
The hydrogen in the raw gas is brought in from the gasification zone. Medium-pressure steam can be used to adjust the small steam-to-fuel ratio; it can also be added to raise the steam pressure and temperature when the shift reactor overheats, or to increase the temperature when it is insufficient. The factor that affects the water vapor ratio is the temperature of the raw gas; the higher the temperature of the raw gas, the more water vapor it contains, and accordingly less steam needs to be added.
This post was last edited by 654262293 on 2011-2-25 at 13:38. The medium-pressure steam (3.5 MPa/above 400) before the inlet is used to adjust the water-vapor ratio; with constant water and gas amounts, the water-vapor ratio is related to the amount of steam added – the greater the amount added, the higher the water-vapor ratio, and vice versa.
Reply to 4# 654262293 Thank you
Reply to 4# 654262293: If the water vapor ratio is 0.69 after one change, will it increase or decrease after cooling through three heat exchangers?
This post was last edited by yxkiss521 on 2011-2-26 at 19:19. Reply to 3# xtvj208: The hydrogen in the raw gas is brought in by the gasification process. There’s no water vapor in the space furnace, right? (Maybe I’m not very clear about this) How is hydrogen produced then? I also want to ask, what is the maximum temperature that can be reached during overheat?