【Weekly Topic】Determinants of the height of a gasifier
Thread Content
What are the main factors that determine the height of different types of gasifiers? Statistics on the height of various types of gasifiers – everyone is encouraged to participate!
I would like to ask: what is the relationship between the diameter of a gasification furnace and its load?
Under constant strength conditions, the capacity of the vaporization furnace is proportional to the square of its diameter.
It still doesn’t seem right?? Could you give an example??
The main issues are related to the flow field and thermal balance: the height of the gasification furnace is related to the operating pressure, while its diameter is related to the gas production capacity. It’s actually easy to understand – the relationship between height and pressure exists to maintain the length of the flame, similar to the principle behind acetylene torches； The volume of the gasification chamber determines the gas production load; once the height is fixed, only the diameter remains to be determined.
Low-pressure gasification has little to do with altitude； High-pressure gasification is related to altitude.
What is the specific relationship between high-pressure gasification and altitude?
The relationship between high-pressure gasification and height should be such that the height is designed on the premise of complete reaction within the furnace.
In Texaco’s single-nozzle gasification process, residence time is the main factor considered, as it determines the volume of the gasification furnace at a given pressure. Pressure determines the length-to-diameter ratio. Generally, it is to take into account the height of the furnace in order to prevent coal from coming out directly due to a short circuit. There are indeed certain principles to follow in the specific design. Many basic data are still lacking for various gasification technologies, making direct industrial scale-up impossible.
Height determines the residence time, while diameter determines the gas production volume.