How can dry gas from refineries be utilized in a way that yields the best economic benefits?
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How can dry gas from refineries be utilized in a way that yields the best economic benefits? How are coking dry gas and catalytic dry gas treated respectively? Are there two methods for treating coker dry gas: producing hydrogen from it, and directly using the dry gas in PSA for hydrogen extraction? Which one offers better economic benefits, or which approach is more commonly used in refineries? Catalytic dry gas treatment is used for hydrogen production from dry gas; is the dry gas fed directly into PSA for hydrogen extraction or burned directly? Which one offers better economic benefits, or which approach is more commonly used in refineries?
Catalytic dry gas should be relatively more economical; its hydrogen production rate is higher than that of coking dry gas, but it contains a higher level of olefins. Hydrogenation reactors generally require two types (isothermal/temperature-variable and adiabatic), while if the coking dry gas is stable, one adiabatic reactor is sufficient; however, in practice two reactors are usually used in the design.
1. Hydrogen production 2. Use as a raw material for ethylbenzene and styrene 3. Burning in furnaces to generate steam, which can then be used for power generation or fed into steam pipelines
This is related to both local gas prices and electricity prices. An assessment is needed to draw a conclusion. It is more cost-effective to use normal catalysis for drying gas to remove styrene. The coking dry gas produced in the Yangtze River Delta region is definitely used for heating, as the price of fuel gas is too high.
Catalytic dry gas PSA hydrogen production is necessary.
It is generally used as a raw material for hydrogen production, I guess. . .
Here, catalytic dry gas is used as fuel gas, while coking dry gas is used as a raw material for hydrogen production