Demonstration of a Lower Cost 2-Tower Micro Scale N2 Rejection System to Upgrade Low-BTU Gas From Stripper Wells.

Bhattacharya, S.

Technical Information Center Oak Ridge Tennessee

关键词: Stripper wells;    Natural gas;    Nitrogen;    Market;    Pipelines;   

RP-ID  :  PB2011112781

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Natural gas is marketed on the basis of its heat content (950 BTU/cubic feet or higher). U.S. pipeline specifications vary but generally require nitrogen (N2) to be less than 5% resulting in 32 tcf (17% of known reserves) to be categorized as low-BTU sub quality. N2 is thus a major target for removal to upgrade natural gas to pipeline quality. A significant portion of the nations N2-rich low-BTU gas is trapped in modest to small fields owned by stripper operators, or isolated behind pipe. These small fields are not amenable to upgrading technologies such as cryogenic separation and conventional pressure swing adsorption (PSA) because these fields cannot usually deliver the large feed volumes necessary for profitable operations of these types of technologies. It is the objective of this project to design, construct, operate, and optimize a micro-scale N2 rejection plant to economically upgrading of low-BTU gas from stripper wells.