Method and apparatus for refueling existing natural gas combined cycle plant as a non-integrated gasification combined cycle plant
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United States of America Patent
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Feb 21, 2012
Grant Date -
N/A
app pub date -
Mar 29, 2008
filing date -
Mar 30, 2007
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Abstract
A process of generating power utilizing a low level heat from a raw syngas produced in a quench gasifier is disclosed. The process includes a first stage that includes: producing raw syngas at the quench gasifier, making 150 psi saturated steam from the produced raw syngas, superheating the saturated steam, and using the superheated saturated steam in a low pressure steam turbine to generate power. The process includes a second stage that includes: providing the raw syngas and a process condensate stream to a thermal fluid vaporizer to vaporize an organic thermal fluid, and using the vaporized organic thermal fluid in an expander turbine to generate power via an organic Rankine cycle.
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