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Jim Walter's CMM technology.

Jim Walter Resources ( recently installed a cryogenic gas processing unit to upgrade medium-quality gob gas. The cryogenic unit was developed and built by BCCK Engineering ( and processes a 198,100 [m.sup.3]/d gas stream of roughly 70% methane into 113,200 [m.sup.3]/d of pipeline quality gas.

The BCCK cryogenic facility was installed at the Blue Creek #4, #5, and #7 mines in January 2000. A dedicated gathering system from the gob wells delivers the gas to the unit. The unit then processes oxygen, [CO.sup.2], water vapour, and nitrogen sequentially from the gob gas feed stream, leaving enriched pipeline-quality gas. The operators are looking for ways to improve the efficiency of the project as well as expand it.

In addition to the cryogenic facility, JWR is working with Ramgen Power Systems ( to find uses for very low quality gob gas and ventilation air methane,

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Title Annotation:cryogenic gas processing unit
Publication:Mining Magazine
Article Type:Brief Article
Geographic Code:1USA
Date:Sep 1, 2001
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