초록 ▼

A combustion turbine power plant (10) incorporating a desiccating scrubber (140) for simultaneously removing water and sulfur from a flue gas (20) of the power plant (10). The desiccating scrubber (140) may include an inlet nozzle (145) for spraying an aqueous solution (142) containing a desiccant a

A combustion turbine power plant (10) incorporating a desiccating scrubber (140) for simultaneously removing water and sulfur from a flue gas (20) of the power plant (10). The desiccating scrubber (140) may include an inlet nozzle (145) for spraying an aqueous solution (142) containing a desiccant and a base into flue gas (20) so the aqueous solution (142) makes direct contact with flue gas (20). A filter (162) may be provided to collect sulfur compounds downstream of the desiccating scrubber (140) and a regenerator (164) may be provided for recovering water. A controller (148) may control a base supply ( 170) and a desiccant supply (172) to regulate the respective amounts of each introduced into the aqueous solution (142). Controller (148) may be responsive to sensors (142) measuring the water and sulfur content of flue gas (20) exhausted to atmosphere (144). The desiccating scrubber (140) may include a demister (160) to entrain carryover droplets from a sprayed aqueous solution (142).

대표청구항 ▼

I claim: 1. A power plant comprising: a combustion turbine engine receiving fuel and air and producing shaft power and exhaust gas; and a desiccating scrubber receiving the exhaust gas and directly contacting the exhaust gas with a solution comprising a desiccant and a base. 2. The power plant o

I claim: 1. A power plant comprising: a combustion turbine engine receiving fuel and air and producing shaft power and exhaust gas; and a desiccating scrubber receiving the exhaust gas and directly contacting the exhaust gas with a solution comprising a desiccant and a base. 2. The power plant of claim 1, the desiccating scrubber comprising an absorber providing direct contact between the exhaust gas and an aqueous solution comprising the desiccant and the base. 3. The power plant of claim 2, further comprising: a regenerator receiving the aqueous solution from the absorber; a heat source for heating the aqueous solution of the desiccant in the regenerator and producing a flow of steam; and means for cooling the flow of steam to produce a flow of recovered water. 4. The power plant of claim 1, the desiccant comprising a calcium halide and the base comprising calcium hydroxide. 5. The power plant of claim 1 further comprising: a regenerator receiving an aqueous solution comprising the desiccant and the base from the desiccating scrubber; a heat source for heating the aqueous solution of the desiccant in the regenerator and producing a flow of steam; and a condenser for cooling the flow of steam to produce a flow of recovered water. 6. The power plant of claim 5 further comprising a re-crystallizer receiving the aqueous solution from the regenerator. 7. The power plant of claim 5 further comprising: a desiccant supply; a base supply; and a controller configured to control a respective quantity of the desiccant and the base supplied to the aqueous solution. 8. The power plant of claim 7 further comprising: means for measuring at least one of a moisture content and a sulfur content of an exhaust gas exiting the desiccating scrubber wherein the controller is configured to control at least one of a quantity of desiccant and a quantity of base in response to the measured content. 9. The power plant of claim 1 further comprising: means for measuring a moisture content or a sulfur content of an exhaust gas exiting the desiccating scrubber; and a controller configured to control a flow rate of an aqueous solution comprising the desiccant and the base in response to the measured moisture or sulfur content. 10. The power plant of claim 1 further comprising: a desiccant supply; a base supply; a fluid circulation line connecting the desiccant supply and the base supply with the desiccating scrubber; and a controller for controlling a quantity of desiccant and a quantity of base to maintain a moisture content and a sulfur content of the exhaust gas exiting the desiccating scrubber within predetermined limits. 11. A power plant comprising: means for generating power and an exhaust gas containing water and sulfur; and a desiccating scrubber receiving the exhaust gas, the desiccating scrubber providing surface area contact between the exhaust gas and an aqueous solution comprising a desiccant and a base for removing sulfur and water from the exhaust gas. 12. The power plant of claim 11 further comprising: a regenerator receiving an aqueous solution from the desiccating scrubber having a first concentration of desiccant and producing steam and an aqueous solution having a second concentration of desiccant higher than the first concentration; and means for cooling the steam to recover water. 13. The power plant of claim 12 further comprising a recrystallizer receiving an aqueous solution from the regenerator having a second concentration of desiccant and producing an aqueous solution having a third concentration of desiccant higher than the second concentration. 14. The power plant of claim 12 further comprising a heat transfer loop for transferring heat from the exhaust gas to the regenerator. 15. The power plant of claim 11, the desiccant comprising a calcium halide and the base comprising calcium hydroxide. 16. The power plant of claim 15, the desiccant comprising calcium chloride. 17. The power plant of claim 11 further comprising: means for spraying droplets of the aqueous solution into the desiccating scrubber; and a filter downstream of the desiccating scrubber for collecting sulfur compounds. 18. The power plant of claim 11 further comprising a contact media for providing surface area contact between the exhaust gas and the aqueous solution.