Abstract: A system and method is disclosed for recovering reagents that are used in removing contaminants from a flue gas stream. The system and method includes contacting the flue gas stream with reagents such as ammonia and sulfuric acid to create an ammonium sulfate stream. The ammoniated sulfate stream is forwarded to an electrodialysis unit wherein the reagents are regenerated and recirculated back to the system.

Abstract: A system and a method for industrial plant or utility plant flue gas desulfurization, with zero waste water liquid discharge from a wet flue gas desulfurization system utilized therein, are disclosed herein. The wet flue gas desulfurization system is supplied an absorption liquid for contact with a flue gas to absorb flue gas acid gases. Waste water from the wet flue gas desulfurization system is heated under pressure in a heat exchanger to produce heated waste water, which is supplied to a flash vessel to produce steam. The produced steam is supplied to the flue gas upstream of a particulate collection system and the wet flue gas desulfurization system, supplied to the flue gas upstream of the wet flue gas desulfurization system, or supplied to absorption liquid circulated to the wet flue gas desulfurization system.

Abstract: A system for recovering ammonia from a gas stream is provided. The system includes a regenerator and a carbon dioxide wash station.

Abstract: A system for recovering ammonia from a gas stream is provided. The system includes a regenerator and a carbon dioxide wash station.

Abstract: A chilled ammonia-based carbon dioxide removal system is provided. The system includes a direct contact cooler, a carbon dioxide absorber and a water wash station.

Abstract: Systems and processes for reducing the energy requirements of an ammonia recovery stripper in a chilled ammonia-based CO2 removal system. The systems and processes include a nanofiltration or reverse osmosis unit for physically separating the washed liquid from a wash vessel configured to receive an ammonia slip feed stream from the main absorber of the chilled ammonia-based CO2 removal system and provide first and second feed streams. Relative to the washed liquid from the wash vessel, the first feed stream has a decreased ammonia molarity whereas the second feed stream has an increased ammonia molarity. The second feed stream is then fed to the ammonia recovery stripper, which reduces steam consumption. The reduced steam consumption translates to significant energy savings, among numerous other advantages. Additionally, the systems and process provide a reduction of equipment sizes related to the stripper unit as may be desired in some applications.

Abstract: An integrated system for capturing carbon dioxide and sulfur oxides from a flue gas stream comprising a desulfurization chamber to remove sulfur-type pollutants and a carbon dioxide capture system in fluid communication with the desulfurization chamber; where the carbon dioxide capture system is operative to absorb carbon dioxide from the flue gas stream.

Abstract: A system and a method for industrial plant or utility plant flue gas desulfurization, with zero waste water liquid discharge from a wet flue gas desulfurization system utilized therein, are disclosed herein. The wet flue gas desulfurization system is supplied an absorption liquid for contact with a flue gas to absorb flue gas acid gases. Waste water from the wet flue gas desulfurization system is heated under pressure in a heat exchanger to produce heated waste water, which is supplied to a flash vessel to produce steam. The produced steam is supplied to the flue gas upstream of a particulate collection system and the wet flue gas desulfurization system, supplied to the flue gas upstream of the wet flue gas desulfurization system, or supplied to absorption liquid circulated to the wet flue gas desulfurization system.

Abstract: An apparatus for evaporating waste water and reducing flue gas acid gas emissions includes an evaporator device configured to receive a portion of flue gas emitted from a combustion unit and waste water for direct contact of the flue gas with the waste water to cool and humidify the flue gas, and to evaporate the waste water. An alkaline reagent as well as activated carbon may be mixed with the waste water prior to waste water contact with the flue gas. Solid particulates that are dried and entrained within the cooled and humidified flue gas can be separated from the flue gas via a particulate collector.

Abstract: Disclosed herein is a system for generating a carbon dioxide gas stream that includes an absorber, a regenerator that lies downstream of the absorber, a carbon dioxide wash station that lies downstream of the regenerator and a reverse osmosis system for receiving a wash solution from the carbon dioxide wash station.

Abstract: Disclosed herein is a system for generating a carbon dioxide gas stream that includes an absorber, a regenerator that lies downstream of the absorber, a carbon dioxide wash station that lies downstream of the regenerator and a reverse osmosis system for receiving a wash solution from the carbon dioxide wash station.

Abstract: A system and method is disclosed for recovering reagents that are used in removing contaminants from a flue gas stream. The system and method includes contacting the flue gas stream with reagents such as ammonia and sulfuric acid to create an ammonium sulfate stream. The ammoniated sulfate stream is forwarded to an electrodialysis unit wherein the reagents are regenerated and recirculated back to the system.

Abstract: An method of operating a plant includes the steps of feeding a reagent to a direct contact heating device (32) for removing ammonia from fluid fed to the direct contact heating device (32), feeding water to the direct contact heating device (32) to contact the fluid after the fluid is contacted with the reagent fed to the direct contract heating device (32), and feeding the water from the direct contact heating device (32) to a water wash tower (20) that is downstream of a carbon dioxide absorber (14) configured to use ammonia to remove carbon dioxide from fluid fed therein. The water wash tower (20) can be configured to remove ammonia from the fluid fed therein prior to that fluid being fed to the direct contact heating device (32). A plant and an apparatus for integrating desulfurization and carbon capture are configurable to implement the method.

Abstract: A carbon dioxide removal system includes a chilled ammonia carbon capture system; an absorber refrigeration system in fluid communication with the chilled ammonia system; and a heat recovery steam generator (HRSG) in fluid communication with the chilled ammonia system and the absorber refrigeration system.

Abstract: An apparatus for evaporating waste water and reducing flue gas acid gas emissions includes an evaporator device configured to receive a portion of flue gas emitted from a combustion unit and waste water for direct contact of the flue gas with the waste water to cool and humidify the flue gas, and to evaporate the waste water. An alkaline reagent as well as activated carbon may be mixed with the waste water prior to waste water contact with the flue gas. Solid particulates that are dried and entrained within the cooled and humidified flue gas can be separated from the flue gas via a particulate collector.

Abstract: The method for operating an arrangement of a generation plant, a carbon dioxide capture plant and a carbon dioxide utilization plant includes generating carbon dioxide containing flue gas, supplying the carbon dioxide containing flue gas to the capture plant, separating a carbon dioxide stream from the carbon dioxide containing flue gas, supplying the utilization plant with the carbon dioxide stream, supplying the utilization plant with water, generating syngas at the utilization plant, supplying heat discharged from the utilization plant to the generation plant and/or to the capture plant and/or using it within the utilization plant.

Abstract: An apparatus for producing formate from carbon dioxide includes a reactor (115) that is configured to receive carbon dioxide from a separation device (109) and a first reagent to form a formate and a bicarbonate material. The bicarbonate material is sent to a regeneration device (123) that also receives a second reagent from a source of the second reagent to form the first reagent and a carbonate material. The first reagent is recycled back to the reactor (115). The carbonate material can be stored in a storage device (131) for subsequent sale or other use and/or sent to a process device (109) of a plant for processing flue gas to remove one or more acid gas elements from the flue gas by using the carbonate material received from the regeneration device (123). A method for producing formate from carbon dioxide can include use of the apparatus.

Abstract: A system and method for desulfurization or acidic gas removal from a hot flue gas is provided that uses a dry sorbent injection technology with downstream sorbent reproduction based on a dual-alkali process. As such, lime and flue gas carbon dioxide are used in a process to produce the dry sorbent, sodium bicarbonate.

Abstract: An apparatus for producing formate from carbon dioxide includes a reactor (115) that is configured to receive carbon dioxide from a separation device (109) and a first reagent to form a formate and a bicarbonate material. The bicarbonate material is sent to a regeneration device (123) that also receives a second reagent from a source of the second reagent to form the first reagent and a carbonate material. The first reagent is recycled back to the reactor (115). The carbonate material can be stored in a storage device (131) for subsequent sale or other use and/or sent to a process device (109) of a plant for processing flue gas to remove one or more acid gas elements from the flue gas by using the carbonate material received from the regeneration device (123). A method for producing formate from carbon dioxide can include use of the apparatus.

Abstract: An method of operating a plant includes the steps of feeding a reagent to a direct contact heating device (32) for removing ammonia from fluid fed to the direct contact heating device (32), feeding water to the direct contact heating device (32) to contact the fluid after the fluid is contacted with the reagent fed to the direct contract heating device (32), and feeding the water from the direct contact heating device (32) to a water wash tower (20) that is downstream of a carbon dioxide absorber (14) configured to use ammonia to remove carbon dioxide from fluid fed therein. The water wash tower (20) can be configured to remove ammonia from the fluid fed therein prior to that fluid being fed to the direct contact heating device (32). A plant and an apparatus for integrating desulfurization and carbon capture are configurable to implement the method.