US 8,776,532 B2Granted

Partial oxidation reaction with closed cycle quench

AssigneesPalmer Labs, LLC, 8 Rivers Capital, LLC

InventorsRodney John Allam, Jeremy Eron Fetvedt, Miles R. Palmer

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Abstract

The present disclosure relates to a power production system that is adapted to achieve high efficiency power production with complete carbon capture when using a solid or liquid hydrocarbon or carbonaceous fuel. More particularly, the solid or liquid fuel first is partially oxidized in a partial oxidation reactor. The resulting partially oxidized stream that comprises a fuel gas is quenched, filtered, cooled, and then directed to a combustor of a power production system as the combustion fuel. The partially oxidized stream is combined with a compressed recycle CO2 stream and oxygen. The combustion stream is expanded across a turbine to produce power and passed through a recuperator heat exchanger. The expanded and cooled exhaust stream is scrubbed to provide the recycle CO2 stream, which is compressed and passed through the recuperator heat exchanger and the POX heat exchanger in a manner useful to provide increased efficiency to the combined systems.

Claims53

Dependent claims

A process for the production of power using a combination of a partial oxidation (POX) system and a power production system (PPS), the process comprising:

combining a solid or liquid fuel and oxygen in a POX reactor under conditions sufficient to partially oxidize the fuel and form a POX stream comprising a fuel gas;
quenching the POX stream through combination with a quenching fluid under conditions sufficient to form a quenched POX stream at a temperature of about 400° C. or less and to solidify at least a portion of any molten solids present in the POX stream;
treating the quenched POX stream so as to remove at least a portion of any solids present therein;
directing the quenched POX stream to a POX heat exchanger and withdrawing a quantity of heat from the quenched POX stream by cooling the quenched POX stream to a temperature of about 100° C. or less against a cooling stream and form a POX fuel gas stream;
passing the POX fuel gas stream through a separator vessel and separating at least a portion of any water present in the POX fuel gas stream;
compressing the POX fuel gas stream to a pressure of about 12 MPa or greater;
combusting the POX fuel gas in a PPS combustor to form a combustion product stream at a pressure of at least about 10 MPa and a temperature of at least about 800° C.;
expanding the combustion product stream across a PPS turbine to generate power and form an expanded PPS combustion product stream;
passing the expanded PPS combustion product through a PPS recuperator heat exchanger and thereby withdrawing heat from the PPS combustion product stream and forming a cooled PPS combustion product stream;
optionally passing the cooled PPS combustion product stream through a water cooler;
treating the cooled PPS combustion product stream in a PPS scrubber separating at least H2SO4, HNO3, or Hg and forming a recycle CO2 stream;
and
pressurizing the recycle CO2 stream in a PPS compressor and forming a compressed recycle CO2 stream.

10 more elements

A combined partial oxidation (POX) system and power production system (PPS) comprising:

a POX reactor adapted to partially oxidize a liquid or solid fuel in the presence of oxygen to form a POX stream comprising a fuel gas;
one or more components adapted to contact the POX stream with a quenching fluid;
an optional POX scrubber adapted to separate any solids present in the quenched POX stream from the POX fuel gas;
an optional filtration device adapted to separate solidified ash particle from a single phase quenched POX fuel gas stream
a POX heat exchanger adapted to withdraw heat from the POX fuel gas against a portion of a compressed recycle CO2 stream and output a cooled POX fuel gas;
an optional separator adapted to separate any liquid water from the POX fuel gas;
a compressor adapted to compress the cooled POX fuel gas to a pressure of about 10 MPa or greater;
a PPS combustor adapted to combust the POX fuel gas in the presence of oxygen and a portion of the compressed recycle CO2 stream and form a PPS combustion product stream at a pressure of about 10 MPa or greater;
a turbine adapted to expand the PPS combustion product stream and generate power in a connected generator;
a recuperator heat exchanger adapted to withdraw heat from the expanded PPS combustion product stream and add the heat to the compressed recycle CO2 stream;
a PPS scrubbing tower adapted to separate one or more of H2SO4, HNO3, and water-dissolved Hg salts from the expanded PPS combustion product stream and output a recycle CO2 stream;
a PPS compressor adapted to compress the recycle CO2 stream to a pressure of about 10 MPa or greater and form the compressed recycle CO2 stream;
flow components adapted to direct a portion of the compressed recycle CO2 stream to the POX heat exchanger;
flow components adapted to direct a portion of the compressed recycle CO2 stream to the PPS recuperator heat exchanger;
and
flow components adapted to direct the compressed recycle CO2 stream from the POX heat exchanger to the PPS recuperator heat exchanger.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/763,922Filed 11 Feb 2013 · us provisional application
Priority: 11 Feb 2012
Published: US 2013/0205746 A115 Aug 2013
Granted: 15 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification34 codes

F02C 3/20
Gas-turbine plants characterised by the use of combustion products as the working fluid: using a special fuel, oxidant, or dilution fluid to…
C10J 3/84
Gas withdrawal means: with means for removing dust or tar from the gas
C10J 3/86
Other features: combined with waste-heat boilers
C10K 1/002
Purifying combustible gases containing carbon monoxide: removal of contaminants