Reclamation of gaseous substances from boiler flue gas for oil recovery

An apparatus for the reclamation from boiler flue gas of gaseous substances for well injection oil recovery, comprising:

• a boiler for generating high pressure steam having a flue gas outlet and a steam outlet;
• a high pressure water pump coupled to the boiler;
• a tower scrubber coupled to the flue gas outlet of the boiler;
• a carbon dioxide reclaim system configured to purify from the flue gases highly pure carbon dioxide gas, the reclaim system comprising:
• an absorber coupled to the tower scrubber;
• an induced draft fan interposed between the tower scrubber and the absorber;
• a separating tank coupled to the absorber;
• a heat exchanger coupled to the absorber;
• and
• a regenerator coupled to the heat exchanger and coupled to a reboiler;
• a steam boiler coupled to the reboiler;
• a water segregator coupled to the regenerator;
• a purifier coupled to the water segregator, the purifier configured to liquefy and purify the carbon dioxide gas from the water segregator;
• a carbon dioxide compressor interposed between the water segregator and the purifier;
• a nitrogen compressor;
• drying beds coupled to the nitrogen compressor;
• absorption beds coupled to the drying beds, the absorption beds being operable to connect to a well casing;
• a nitrogen pressurizer interposed between the absorption beds and the well casing;
• a mixing tank coupled to the steam outlet of the boiler and to the purifier, the mixing tank operable to connect to a gas injection tube of an oil field, wherein the mixing tank is configured to mix in the mixing tank the captured steam and high purity liquefied carbon dioxide gas into a proportion suitable for combined injection into the gas injection tube of the oil field for increased recovery of thick crude oil from the oil field;
• and
• a carbon dioxide pressurizer interposed between the purifier and the mixing tank.

A method for recovery of thick crude oil from an oil well, comprising:

• generating high pressure steam and flue gases in a boiler from the combustion of a fuel source;
• capturing steam emitted from the combustion of the fuel source in a steam outlet in the boiler;
• capturing flue gases emitted from the combustion of the fuel source in a flue gas outlet in the boiler;
• removing sulfur dioxides and solid particles from the flue gases in a tower scrubber coupled to the flue gas outlet of the boiler;
• purifying carbon dioxide gas from the flue gases using a carbon dioxide reclaim system comprising an absorber coupled to the tower scrubber, a heat exchanger coupled to the absorber, and a regenerator coupled to the heat exchanger and to a reboiler;
• segregating and removing liquid water from the carbon dioxide gas from the regenerator;
• liquefying purified carbon dioxide gas from the carbon dioxide reclaim system using a purifier;
• mixing in a mixing tank the steam from the steam outlet of the boiler with the liquefied carbon dioxide gas from the purifier into a proportion adapted for combined injection into a gas injection tube of an oil well for recovering an amount of thick crude oil from the oil well;
• injecting the proportion into the gas injection tube of the oil well;
• and
• recovering the amount of thick crude oil in the oil well.