On the role of steam injection in the pipelines before converting water gas into the system
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I don’t understand the part related to Lind’s conversion process: what is the purpose of using a steam supply with a pressure of 0.3 MPa and a temperature of 80 degrees Celsius after the large valve in the water-gas conversion section? Let me know if you know. Thank you in advance! ! ! Points are given for reasonable answers! ! !
Is 1# ningzi521 used to adjust the syngas temperature in the conversion system? Is it still used to adjust the water vapor ratio? It would be best if the poster could provide the parameters of the system before and after the valve, as well as those of the inlet/outlet switching system, such as temperature, pressure, etc...
It should be used to regulate the temperature of the syngas.
I’m not really familiar with this; steam at 0.3 MPa enters at the shift inlet valve. Under normal circumstances, the shift pressure is much higher than 0.3 MPa... This kind of steam is generally used only for pipeline heating. If the gasification process occurs over a long distance in the shift pipeline, then it might be used for heating purposes.
On my end, it’s Linde’s system. Why isn’t there a steam pipeline connected to the gas pipeline after the conversion inlet valve, as you mentioned? Could you explain it more clearly? Is it connected directly to the gas pipeline? It’s impossible to use steam at 0.3 MPa to regulate the temperature at the inlet after the gas enters the conversion section; the gas pressure is above 3.0 MPA, and it’s very dangerous for high-pressure gas to mix with low-pressure gas. Has insulation been added to your gas pipeline? If not, then this steam pipeline is likely to be used for heat tracing, with a pressure of 0.3 MPa and a temperature of around 135 degrees
The pressure in the shift reactor should be above 0.3 MPa; steam at 0.3 MPa is used for heating purposes. If it is necessary to adjust the temperature of the shift reactor or the gasification ratio, superheated steam should be utilized.
Could the original poster please provide more details for analysis?
2# zaizuo: In our facility, the temperature for medium-temperature shift reaction is around 230-240 degrees, and the pressure is currently over 30 kilograms; under normal conditions it is 57 kilograms. The 0.3MPa steam is supplied directly along the main pipeline, ruling out its use for heat tracing.
7# tanlj doesn’t know what they want to know in detail! I will explain in detail.
It is used to heat the pipeline when driving air under certain special conditions.
Before removing the catalyst, there is a process of oxidizing the catalyst; during this process, steam is added to cool the shift reactor in order to prevent the furnace from overheating.