Process Selection for removal of CO2, H2S & H2O from Natural Gas Well
Process Selection for removal of CO2, H2S & H2O from Natural Gas Well
(OP)
Suggestions on process selection preferences for purification(Removal of CO2, H2S and H2O)from natural gas well. Have heard of difficulties with membranes and that MDEA is the latest hottest way to go if scrubbing.
Temperature Rating : 130 - 140 degree Farenheit
Pressure Rating : 1200 - 1300 PSIG
Well Head Gas Data:
CO2 - 10 mol%
H2S - 15 - 18 ppmv
H2O - 5000 barrels/day (calc gas sat'd w/ 20 b/day)
Expect some kind of basic feed gas separator first.
Product requirements:
CO2 - </= 3 mol%
H2S - o.24 grains/100 scf
H20 - 7 lb / mmscf at 14.7 psia max
Thank you in advance for any advice
Sincerely,
Tom
Temperature Rating : 130 - 140 degree Farenheit
Pressure Rating : 1200 - 1300 PSIG
Well Head Gas Data:
CO2 - 10 mol%
H2S - 15 - 18 ppmv
H2O - 5000 barrels/day (calc gas sat'd w/ 20 b/day)
Expect some kind of basic feed gas separator first.
Product requirements:
CO2 - </= 3 mol%
H2S - o.24 grains/100 scf
H20 - 7 lb / mmscf at 14.7 psia max
Thank you in advance for any advice
Sincerely,
Tom





RE: Process Selection for removal of CO2, H2S & H2O from Natural Gas Well
Best regards
Morten
RE: Process Selection for removal of CO2, H2S & H2O from Natural Gas Well
There are many of process such as; Amines processes, Benfield Process and membrane Procoesses.
you can get alot of information through many Gas books.
RE: Process Selection for removal of CO2, H2S & H2O from Natural Gas Well
I agree with MortenA that the amine route seems to be the industry standard and has a proven track record.
Good luck
Nightwing
RE: Process Selection for removal of CO2, H2S & H2O from Natural Gas Well
It has been claimed that even when the removal of water is not required, this process show advantages over others regarding the production of very pure gas, low initial investment, low steam consumption, and less foaming tendency. Main disadvantages are the large amount of HCs dissolved by the solution and the corrosivity developed on regeneration.
RE: Process Selection for removal of CO2, H2S & H2O from Natural Gas Well
RE: Process Selection for removal of CO2, H2S & H2O from Natural Gas Well
A recent development that does not use amine (results in chemical waste) is based on an absorber with a buffer solution. The H2S that is washed in is converted to elemental sulfur by partical oxidation in a seperate reactor. It will produce reusable elemetal sulfur instead of waste. Have a look at http://www.uop.com/refining/processes_and_products/thiopaq_intro.htm for an explanation.
This process will remove the water upto the dew point at the scrubber temperature (30oC) and part of the CO2. However, I don't think that the performance of an amine scrubber will be much better.
Greetings,
Jacco