A cooling system is configured to cool exhaust gases exiting a furnace of a steel production system through an exhaust hood, a dropout box, and a hot gas duct of the steel production system. The cooling system includes an inlet configured to receive water from a water pump for cooling the exhaust gases, and an outlet configured to exhaust the water from the cooling system. The cooling system further includes a first water line configured to supply the water to the exhaust hood of the steel production system for cooling the exhaust gas received therein, and a second water line configured to supply the water to the dropout box of the steel production system for cooling the exhaust gas received therein. The cooling system also includes a third water line configured to supply the water to the hot gas duct of the steel production system for cooling the exhaust gas received therein, and each of the first water line, the second water line, and the third water line are operably coupled between the inlet and the outlet of the cooling system. The cooling system also includes a controller configured to control and maintain a defined temperature of the water circulating within the cooling system.

A cooling system is configured to cool exhaust gases exiting a furnace of a steel production system through an exhaust hood, a dropout box, and a hot gas duct of the steel production system. The cooling system includes an inlet configured to receive water from a water pump for cooling the exhaust gases, and an outlet configured to exhaust the water from the cooling system. The cooling system further includes a first water line configured to supply the water to the exhaust hood of the steel production system for cooling the exhaust gas received therein, and a second water line configured to supply the water to the dropout box of the steel production system for cooling the exhaust gas received therein. The cooling system also includes a third water line configured to supply the water to the hot gas duct of the steel production system for cooling the exhaust gas received therein, and each of the first water line, the second water line, and the third water line are operably coupled between the inlet and the outlet of the cooling system. The cooling system also includes a controller configured to control and maintain a defined temperature of the water circulating within the cooling system.

An exhaust gas treatment device includes an exhaust gas line where a combustion exhaust gas discharged from a power generation facility flows through, an exhaust gas line where a second combustion exhaust gas discharged from a second power generation facility flows through, exhaust gas exhaust line disposed by branching off from exhaust gas line, discharging a part of combustion exhaust gases as exhaust combustion exhaust gases, a nitrogen oxide removing unit removing nitrogen oxide contained in an integrated combustion exhaust gas that integrates the combustion exhaust gases, an integrated waste heat recovery boiler recovering waste heat from the integrated combustion exhaust gas, and a CO.sub.2 recovery unit recovering CO.sub.2 contained in the integrated combustion exhaust gas by using CO.sub.2 absorbing liquid.

Exhaust plume abatement systems and methods are provided. A representative system, which is configured for use with a heating appliance, incorporates: a housing defining an interior chamber; an exhaust gas inlet configured to receive exhaust gas from the heating appliance; a first heat exchanger, disposed within the interior chamber; a dilution air inlet configured to receive dilution air from outside the housing; an exhaust gas outlet communicating with the interior chamber; wherein the interior chamber is configured to receive the exhaust gas from the exhaust gas inlet and the dilution air to form low humidity exhaust gas, which exhibits a lower humidity than the exhaust gas received from the heating appliance; and wherein the exhaust gas outlet is configured to output the low humidity exhaust gas with no visible exhaust plume.

Exhaust plume abatement systems and methods are provided. A representative system, which is configured for use with a heating appliance, incorporates: a housing defining an interior chamber; an exhaust gas inlet configured to receive exhaust gas from the heating appliance; a first heat exchanger, disposed within the interior chamber; a dilution air inlet configured to receive dilution air from outside the housing; an exhaust gas outlet communicating with the interior chamber; wherein the interior chamber is configured to receive the exhaust gas from the exhaust gas inlet and the dilution air to form low humidity exhaust gas, which exhibits a lower humidity than the exhaust gas received from the heating appliance; and wherein the exhaust gas outlet is configured to output the low humidity exhaust gas with no visible exhaust plume.

A method for improving effectiveness of a steam generator system includes providing a steam generator system including a steam generator vessel, an air supply system and an air preheater. The air supply system is in communication with the steam generator vessel through the air preheater and the steam generator vessel is in communication with the air preheater. The air supply system provides a first amount of air to the air preheater. At least a portion of the first amount of air is provided to the steam generator vessel. A flue gas mixture is discharged from the steam generator vessel. At least a portion of the flue gas mixture flows into the air preheater. SO.sub.3 in the flue gas mixture is mitigated before the flue gas mixture enters the air preheater.

A method for improving effectiveness of a steam generator system includes providing a steam generator system including a steam generator vessel, an air supply system and an air preheater. The air supply system is in communication with the steam generator vessel through the air preheater and the steam generator vessel is in communication with the air preheater. The air supply system provides a first amount of air to the air preheater. At least a portion of the first amount of air is provided to the steam generator vessel. A flue gas mixture is discharged from the steam generator vessel. At least a portion of the flue gas mixture flows into the air preheater. SO.sub.3 in the flue gas mixture is mitigated before the flue gas mixture enters the air preheater.

The present disclosure relates to a flue gas exhaust system for an industrial furnace, especially a steam reforming furnace. The flue gas exhaust system comprises a stack having an inlet opening for introducing flue gas into the stack and an outlet opening for exhausting flue gas. The inlet opening of the stack is in fluid connection to an outlet of a heat recovery system of the industrial furnace. Further, the fluid connection between said heat recovery system outlet and said stack inlet opening comprises a transition flue gas duct that at least partly embraces a part of the stack.

The present disclosure relates to a flue gas exhaust system for an industrial furnace, especially a steam reforming furnace. The flue gas exhaust system comprises a stack having an inlet opening for introducing flue gas into the stack and an outlet opening for exhausting flue gas. The inlet opening of the stack is in fluid connection to an outlet of a heat recovery system of the industrial furnace. Further, the fluid connection between said heat recovery system outlet and said stack inlet opening comprises a transition flue gas duct that at least partly embraces a part of the stack.

A carbon dioxide capturing apparatus using cold heat of liquefied natural gas (LNG) includes a heat exchanger to cool primary coolant using heat exchange between the primary coolant and the LNG; a chiller connected to the heat exchanger and configured to discharge capturing coolant colder than the primary coolant by performing a heat exchange between the capturing coolant and a cooling material; and a capturing cooler configured to capture carbon dioxide contained in flue gas by performing a heat exchange between the capturing coolant discharged from the chiller and the flue gas. A power generation system includes an LNG storage facility; a power generation facility discharging flue gas; a unit for heat exchange between the LNG and a coolant to regasify the LNG and cool the coolant; and a unit for capturing carbon dioxide contained in the flue gas by heat exchange between the discharged flue gas and the coolant.