Power Plant

Abstract

A process and a power plant comprising a combustor with a flue gas outlet and one or more water selective separators downstream the flue gas outlet to separate water from the flue gas. Optionally, a water return line returns separated water from the water selective separator to a water inlet of a CO shift cell with an outlet feeding H 2 enriched syngas to the combustor.

1 . A power plant comprising a combustor with a flue gas outlet and one or more water selective separators downstream of the flue gas outlet to separate water from the flue gas. 
     
     
         2 . A power plant according to  claim 1  comprising a heat recovery unit downstream of the one or more water selective separators for extracting heat from the flue gas. 
     
     
         3 . A power plant according to  claim 1  further comprising a CO shift cell with a syngas inlet, a water inlet and an outlet operatively connected to a syngas inlet of the combustor for the transport of H 2  enriched syngas to the combustor, wherein a water return line is configured to return separated water from the one or more water selective separators to the water inlet of the CO shift cell. 
     
     
         4 . A power plant according to  claim 1 , wherein the one or more water selective separators comprise a hydrophilic ceramic membrane. 
     
     
         5 . A power plant according to  claim 1  wherein the one or more water selective separators comprise a hydrophilic stainless steel membrane. 
     
     
         6 . A power plant according to  claim 1  wherein the one or more water selective separators include an ultrafiltration membrane. 
     
     
         7 . A power plant according to wherein the one or more water selective separators include an microfiltration membrane. 
     
     
         8 . A process for generating power by combustion of a syngas feed in a combustor, wherein water is separated from flue gas discharged from the combustor. 
     
     
         9 . A process according to  claim 8 , wherein at least a part of the separated water is returned to the syngas feed to increase its hydrogen content by a water-gas shift reaction before the syngas feed is fed to the combustor. 
     
     
         10 . A process according to  claim 8 , wherein at least a part of the separated water is fed to a steam cycle as make-up water. 
     
     
         11 . A process according to  claim 1 , wherein at least a part of the water is separated from the flue gas by permeation through one or more membranes followed by condensation.