One Question per Day (December 11, 2017)
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What are the types of gasification methods based on the operating pressure of the gasifier? It would be best to list what the corresponding pressure ranges are Answer: Atmospheric pressure gasification, low-pressure gasification (<0.35 MPa), medium-pressure gasification (0.7–3.5 MPa), and high-pressure gasification (>7.0 MPa); there are also other classifications based on numerical values
Based on the operating pressure of the gasifier, coal gasification can be divided into atmospheric pressure gasification, medium pressure gasification, and high pressure gasification. Atmospheric pressure gasification includes processes such as the powder coal gasification technique used in the Enfield gasifier； Medium-pressure gasification, such as water-coal slurry gasification and dry powder gasification at 2.5 and 4.0 MPa respectively; currently, the gasification process with the highest capacity is likely the one at 6.5 MPa. It belongs to high-pressure gasification. I’m not sure if what I said is correct Please give your advice
Atmospheric pressure 2.5MPa 4.0MPa 6.5MPa 9.8PMa
Atmospheric pressure gasification, low-pressure gasification (<0.35 MPa), medium-pressure gasification (0.7–3.5 MPa), and high-pressure gasification (>7.0 MPa)
A more detailed classification includes low-pressure vaporization, with a pressure of a few kilograms, such as 3 or 4 kilograms
A more detailed classification includes low-pressure vaporization, with a pressure of a few kilograms, such as 3 or 4 kilograms
Your answer should be a specific numerical value, rather than classifying gasification based on pressure levels
Based on the operating pressure of the gasifier, it can be divided into atmospheric pressure gasification and pressurized gasification.
Vaporization at atmospheric pressure and vaporization under pressure. The pressure in the Lurgi gasifier ranges from 2.0 to 3.0 MPa, the reaction pressure in the Winkler gasifier is 12 MPa, while the pressure in the K-T gasifier is at atmospheric pressure.
Pressurized gasification can be further subdivided as well. Additionally, Winkler gasification is divided into Winkler gasification and high-temperature Winkler gasification; the former takes place at atmospheric pressure, while the latter is carried out under pressure, with the pressure in high-temperature Winkler gasification being around 2.5 to 2.7 MPa.
Atmospheric pressure gasification, low-pressure gasification, medium-pressure gasification, and high-pressure gasification.