Acid Gas Injection Pipeline 2

[AggieCHEN04]

I have a mixture of acid gas that is (by mass) 73% CO2, 26% H2S, and about 0.2% H2O with trace hydrocarbons. The acid gas is compressed to 1100 psig and then flows to the injection well through a buried carbon steel pipeline.

My concern is that of an aqueous phase may condense one the gas hits the colder pipeline and cause localized corrosion. Should I be worried? Are there any good epoxy coatings for this type of application? I had originally planned on dehydrating the gas, but I have run into some budgetary and time constraints.

 

[elguero]

Fair enough, BALA0610, but watch out for supersturation. Make sure residense times and conditions in the cooler, and downstream, are adequate.