CO2 Removal
CO2 Removal
(OP)
Hello,
I have a gas stream that has 12% CO2 in it. I need to knock it down to pipeline quality (2%). The recommended method based on the GPSA is to use Amine. However it has been requested that I try to use a physical solvent. I dont know if it is even possible to do so. Can anyone point me to a reference that would indicate the benefirs of one versus the other. I know that with a physical solvent you can sometimes lose some of the volume of the gas product and with and an amine unit is more costly than a simple scrubber. Also, I have heard that a Glycol-Amine process would be a great solution. I have to create a unit for dehy so if I could do both at once that would be better. Any references on that would be great.
Thanks in advance for the attention.
Gela
I have a gas stream that has 12% CO2 in it. I need to knock it down to pipeline quality (2%). The recommended method based on the GPSA is to use Amine. However it has been requested that I try to use a physical solvent. I dont know if it is even possible to do so. Can anyone point me to a reference that would indicate the benefirs of one versus the other. I know that with a physical solvent you can sometimes lose some of the volume of the gas product and with and an amine unit is more costly than a simple scrubber. Also, I have heard that a Glycol-Amine process would be a great solution. I have to create a unit for dehy so if I could do both at once that would be better. Any references on that would be great.
Thanks in advance for the attention.
Gela





RE: CO2 Removal
RE: CO2 Removal
Volume of Gas
Presure of gas
Presence of other contaminates that need removed
Gas composition
Environmental regulations and permit requirements
Other adjacent process that could supply synergies
For example, we have facilities with some of your listed conditions,there are large volumes and the gas is medium pressure. A combination of membranes and formulated amines that act like physical solvents and reactive agents.
I will warn you, you will have some treating problems because of the high CO2. There will be a heat build up (temperature bulge) in most contacting situations that will need some consideration.
If you need some help, most chemical suppliers will be glad to discuss with you even before you engauge an engineering design firm.
RE: CO2 Removal
RE: CO2 Removal
Yes, the methane losses with amines and solvents are lower.
RE: CO2 Removal
Doug