Sulfur Recovery Units- Sulfur recovery unit (SRU) design using GAA Licensed Technology or open-art modified Claus technology with straight-through or split-flow design and various reheat methods.

Gas Treating Units- GAA is experienced in grassroots and retrofit designs of gas treating units utilizing MEA, DEA, and MDEA. GAA can also supply designs using any of the available specially formulated solvents. GAA has designed gas treating units with operating pressures ranging from less than 100 psig to over 1000 psig.

Sour Water Strippers- GAA is experienced in grassroots and retrofit designs of sour water strippers with feed rates of 100 - 800 gpm. The designs have incorporated both conventional and pump-around overhead condenser systems, live steam sparging and reboilers, and both packed and trayed towers.

Tail Gas Cleanup Units (TGCU's)- GAA can supply process designs for amine type TGCU's which recycle unrecovered sulfur as H2S to the upstream Claus SRU, utilizing generically available technology or technology from various licensors.