Importance

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Abstract

A method for removing and preventing emissions into the atmosphere of carbon dioxide (CO.sub.2) from exhaust gases from gas turbines for the production of oil and gas, comprising the following steps: (a) natural gas and air are introduced into a gas turbine in which natural gas is converted to mechanical energy; (b) the exhaust gas from the gas turbine is passed through a heat recovery unit for recovery of the heat content in the exhaust gas; (c) after emitting heat in the recovery unit whereby the temperature of the exhaust gas has been reduced to 20.degree.-70.degree. C., the exhaust gas is passed to an absorption column containing an absorption liquid, where the carbon dioxide is absorbed in the said liquid, and the thereby purified exhaust gas, essentially free of carbon dioxide, is vented to the atmosphere; (d) the absorption liquid which contains CO.sub.2 is passed to a stripping column where the CO.sub.2 is removed from the absorption liquid heated to a temperature of 120.degree.-150.degree. C.; (e) the thereby regenerated absorption liquid which is essentially free of CO.sub.2 is recycled to the absorption column and the separated CO.sub.2 gas is passed to a compression stage for compression and utilization or disposal; wherein approximately 40% of the exhaust gas is recycled to the compressor air inlet for said gas turbine before the exhaust gas is passed to the absorption stage (c).

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First Claim