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The reactor pressure has got to be quite low if they are able to get most of the CO2 out of those cylinders if they only start out at 150 to 300 PSIG, even liquid-filled. Also, for dry ice formation, the pressure must be below about 75 PSIG. A pump is really the best way to do this, and a...

1. Some V/L data sources are U. S. Bureau of Mines Report of Investigations No. 5484 (1959) and 5622 (1960) (both original equilibrium studies) and U. S. Bureau of Mines Bulletin 597 (1962 - a summary of pilot plant data) by J. S. Field and J. H. Benson et al. I'm sure there are others, plus...

TEG works fine for CO2 dehydration as long as you have a flash tank to remove dissolved CO2 from the TEG before the stripper (assumes you're treating at pressure). We had two TEG units treating high CO2 streams (98%+ CO2) at about 500 PSIG for years (gas from a Hot Pot unit). They were taken...

A carbon filter on a portion of the rich amine stream is usually the best way to deal with foaming problems. Antifoams work well, but are expensive. They also violate the "if some is good, more is better" rule, so small amounts are the best way to go. It sounds like you're doing the...

Are your temperatures around the contactor stable? Winter can bring cooler ambients and resulting hydrocarbon fallout in piping between separator/scrubbers and contactors. Lower ambients can also cause trouble in solvent feed temps to the contactor, resulting in increased HC condensation in...