Gas Compression in Dense Phase
Gas Compression in Dense Phase
(OP)
I looking for the properties of the Equipment that we can use to pump a gas in dense phase. What do you name it? Pump or Compressor? Do you know any licensor in this issue?
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Gas Compression in Dense Phase
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Gas Compression in Dense PhaseGas Compression in Dense Phase(OP)
I looking for the properties of the Equipment that we can use to pump a gas in dense phase. What do you name it? Pump or Compressor? Do you know any licensor in this issue?
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RE: Gas Compression in Dense Phase
RE: Gas Compression in Dense Phase
The pumps were way cheaper than the compressors.
RE: Gas Compression in Dense Phase
Does this mean operating at Pressure and Temperature such that the fluid state condition is inside the Liquid - Vapour phase envelop ?
RE: Gas Compression in Dense Phase
I've attached a phase diagram for CO2 (for example). For this very special fluid, the critical point is 87.76F and 1070 psia. If I was starting at 2000 psia and 200F then it wouldn't make any difference which to use and you would pick a pump because it is less expensive (and fewer lubrication problems, dense phase CO2 is the best cleaning agent on the planet and CO2 compressors often suffer from lubrication failures when they dip into the dense phase). If I was starting out below 1100 psia then I'd use a compressor because a small drop in suction pressure would drop me out of dense phase and damage may pump technologies.
David Simpson, PE
MuleShoe Engineering
Law is the common force organized to act as an obstacle of injustice Frédéric Bastiat
RE: Gas Compression in Dense Phase
David Simpson, PE
MuleShoe Engineering
Law is the common force organized to act as an obstacle of injustice Frédéric Bastiat
RE: Gas Compression in Dense Phase
RE: Gas Compression in Dense Phase
RE: Gas Compression in Dense Phase
About ethane the Critical temperature is 32.17°C and the Critical pressure is 48.72 bar.
The operating inlet pressure at the mentioned pump station would be ~60 bar which need to be pressurized to ~95bar. According to simulation results, the operating inlet density is 290-330 kg/m3 and it will be increased between ~1 and ~12 percents during pressurization. The temperature changes during normal operation is <20°C. Hence, in Normal operation we do not need to reduce the internal energy of the fluid.
Regarding dcasto's comment I conclude that a multistage pump with specially designed impellers is the best choice.
I will appreciate your comments :)
RE: Gas Compression in Dense Phase
RE: Gas Compression in Dense Phase
Oh, and we added a ebara cryodynamics pump at a different location. It was a seamless pump with a gas cooled electric motor.