Oil sand production without co2 emission

Abstract

A plant for generation of steam for oil sand recovery from carbonaceous fuel with capture of CO 2 from the exhaust gas, comprising heat coils ( 105, 105′, 105″ ) arranged in a combustion chamber ( 101 ) to cool the combustion gases in the combustion chamber to produce steam and superheated steam in the heat coils, steam withdrawal lines ( 133, 136, 145 ) for withdrawing steam from the heat coils, an exhaust gas line ( 106 ) for withdrawal of exhaust gas from the combustion chamber ( 101 ), where the combustion chamber operates at a pressure of 5 to 15 bara, and one or more heat exchanger(s) ( 107, 108 ) are provided for cooling of the combustion gas in line ( 106 ), a contact device ( 113 ) where the cooled combustion gas is brought in countercurrent flow with a lean CO 2 absorbent to give a rich absorbent and a CO 2 depleted flue gas, withdrawal lines ( 114, 115 ) for withdrawal of rich absorbent and CO 2 depleted flue gas, respectively, from the contact device, the line ( 115 ) for withdrawal of CO 2 depleted flue gas being connected to the heat exchangers ( 107, 108 ) for heating of the CO 2 depleted flue gas, and where the rich absorbent is regenerated an absorbent regenerator ( 116 ), the regenerated lean absorbent is recycled to the absorber ( 113 ), and a gas withdrawal line ( 121 ) connected to the absorber for withdrawal of CO 2 and steam from the regenerator ( 116 ), is described

1 . A plant for generation of steam for oil sand recovery from carbonaceous fuel with capture of CO 2  from the exhaust gas, the plant comprising:
 at least one fuel line for introduction of the fuel into a combustion chamber;   at least one air line for introduction of air or another oxygen containing gas into the combustion chamber;   at least one heat coil arranged in the combustion chamber to cool the combustion gases in the combustion chamber to produce steam and superheated steam in the heat coils; steam withdrawal lines for withdrawing steam from the heat coils;   an exhaust gas line for withdrawal of exhaust gas from the combustion chamber;   one or more compressors to compress the air or oxygen containing gas to be introduced into the combustion chamber operating at a pressure of 5 to 15 bara;   one or more heat exchangers for cooling of the combustion gas in the exhaust gas line;   a contact device where the cooled combustion gas is brought in countercurrent flow with a lean CO 2  absorbent to give a rich absorbent and a CO 2  depleted flue gas;   withdrawal lines for withdrawal of rich absorbent and CO 2  depleted flue gas, respectively, from the contact device, the line for withdrawal of CO 2  depleted flue gas being connected to the heat exchangers for heating of the CO 2  depleted flue gas;   one or more turbines for expanding the CO 2  depleted flue gas after heating;   a flue gas line for releasing the expanded and CO 2  depleted flue gas into the surroundings;   an absorbent regenerator wherein the rich absorbent is regenerated;   a lean absorbent line for recycling of regenerated absorbent to the absorber;   a gas withdrawal line connected to the absorber for withdrawal of CO 2  and steam from the regenerator; and   a steam line for introduction of steam into an oil sands reservoir.   
     
     
         2 . The plant according to  claim 1 , wherein one or more heat exchangers are arranged on the steam withdrawal lines, where a water line is arranged to introduce water into the one or more heat exchangers arranged on the steam withdrawal lines, and the steam line for introduction of steam into an oil sands reservoir is arranged to withdraw steam from the one or more heat exchangers arranged on the steam withdrawal lines. 
     
     
         3 . The plant according to  claim 1 , wherein one or more steam turbines are arranged for expanding steam from the steam withdrawal lines to generate electrical power. 
     
     
         4 . The plant according to  claim 1 , further comprising a heavy oil upgrade facility for upgrading the produced heavy oil from the oil sands. 
     
     
         5 . The plant according to  claim 4 , further comprising:
 a gasifier for gasification of coal;   a char line for withdrawing produced char;   a gas withdrawal line for withdrawal of produced gas in the gasifier, the gas withdrawal line being connected to a separator for separation of the gasified products;   a heavy hydrocarbons line for withdrawal of a heavy hydrocarbon fraction of the gasified products;   a gas line for withdrawal of a gas mainly comprising methane and CO; and   a hydrogen line for withdrawing hydrogen from the separator and introducing the hydrogen into the upgrade facility.   
     
     
         6 . The plant according to  claim 5 , further comprising:
 a char and gas fired power plant for producing heat and electrical power; and   an exhaust gas line for withdrawal of exhaust gas from the power plant and for introducing the exhaust gas as an oxygen containing gas into a power plant with CO 2  abatement.   
     
     
         7 . The plant according to  claim 6 , wherein the exhaust gas line is connected to an additional gas fired, power plant with CO 2  capture for introduction of the exhaust gas as an oxygen containing gas into the power plant. 
     
     
         8 . A system for producing oil from an oil sands field, where vapor injection wells, production wells and electrodes are provided in the oil gas field, wherein the system comprises a plant according to  claim 1 . 
     
     
         9 . The plant according to  claim 2 , wherein one or more steam turbines are arranged for expanding steam from the steam withdrawal lines to generate electrical power. 
     
     
         10 . The plant according to  claim 2 , further comprising a heavy oil upgrade facility for upgrading the produced heavy oil from the oil sands. 
     
     
         11 . The plant according to  claim 3 , further comprising a heavy oil upgrade facility for upgrading the produced heavy oil from the oil sands. 
     
     
         12 . The plant according to  claim 11 , further comprising:
 a gasifier for gasification of coal;   a char line for withdrawing produced char;   a gas withdrawal line for withdrawal of produced gas in the gasifier, the gas withdrawal line being connected to a separator for separation of the gasified products;   a heavy hydrocarbons line for withdrawal of a heavy hydrocarbon fraction of the gasified products;   a gas line for withdrawal of a gas mainly comprising methane and CO; and   a hydrogen line for withdrawing hydrogen from the separator and introducing the hydrogen into the upgrade facility.   
     
     
         13 . The plant according to  claim 12 , further comprising:
 a char and gas fired power plant for producing heat and electrical power; and   an exhaust gas line for withdrawal of exhaust gas from the power plant and for introducing the exhaust gas as an oxygen containing gas into a power plant with CO 2  abatement.   
     
     
         14 . The plant according to  claim 13 , wherein the exhaust gas line is connected to an additional gas fired, power plant with CO 2  capture for introduction of the exhaust gas as an oxygen containing gas into the power plant.