ExxonMobil to build commercial capture demonstration plant
Capture, May  06  2008 (Carbon Capture Journal)

- ExxonMobil is committing more than $100 million to complete development and testing of an improved natural gas treating technology which could make CO2 capture more efficient.

The company plans to build a commercial demonstration plant near LaBarge, Wyoming, at its Shute Creek Treating Facility, where it will use ExxonMobil's Controlled Freeze Zone technology (CFZ).

CFZ is a single-step cryogenic separation process that freezes out and then melts the CO2 and removes other components including hydrogen sulfide, as a high pressure liquid stream.

If successful, the process could reduce the cost of carbon dioxide removal from produced natural gas and eliminate the use of solvents and sulfur plants.

The new demonstration plant will advance the CFZ technology to commercial application. It will process about 14 million cubic feet of gas per day for injection and test a wide range of gas compositions to evaluate the extent of its applicability to the world's undeveloped gas resources.

Construction will commence summer 2008 for operational startup in late 2009. Testing is expected to occur over one to two years. The detailed engineering, procurement, and construction management will be provided by URS Washington Division.

CFZ was developed by ExxonMobil Upstream Research Company and has undergone significant improvements since the 1980s, when, in an industry first, it proved the concept of freezing carbon dioxide in natural gas separation with a CFZ pilot plant.

ExxonMobil



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