An exhaust gas heater for an exhaust gas system of a combustion engine includes a carrier and at least one heating conductor through which a current flows. The heating conductor is mounted on the carrier. The heating conductor is provided via separation from a metal flat material blank. A method of making an exhaust gas heater includes a step of separating the heating conductor from the metal flat material blank.

An exhaust gas heater for an exhaust gas system of a combustion engine includes a carrier and at least one heating conductor through which a current flows. The heating conductor is mounted on the carrier. The heating conductor is provided via separation from a metal flat material blank. A method of making an exhaust gas heater includes a step of separating the heating conductor from the metal flat material blank.

A heat exchanger includes a heat recovery unit that causes a heat medium to recover heat from flue gas through first heat exchange by bringing the flue gas into contact with a fin tube; a reheater including a preheating unit configured to preheat flue gas through second heat exchange by bringing the flue gas into contact with a tube, and heating units that heat the flue gas through third heat exchange by bringing the flue gas into contact with the heat medium; and a control unit that calculates a recovered heat quantity to be recovered by the heat recovery unit from the flue gas through the first heat exchange, and that controls temperature of the heat medium after the first heat exchange within a predetermined range.

A method for improving effectiveness of a steam generator system includes providing air to an air preheater in excess of that required for combustion of fuel and providing the air at a mass flow such that the air preheater has a cold end metal temperature that is no less than a water dew point temperature in the air preheater and such that the cold end metal temperature is less than a sulfuric acid dew point temperature. The method includes mitigating SO.sub.3 in the flue gas which is discharged directly from the air preheater to a particulate removal system and then directly into a flue gas desulfurization system. Flue gas reheat air is fed from the air preheater to heat the flue gas prior to entering a discharge stack to raise the temperature of the flue gas to mitigate visible plume exiting and to mitigate corrosion in the discharge stack.

A method of operating and an arrangement for a steam boiler system including a furnace and along a following flue gas channel a number of superheaters, a number of economizers, and at least one air preheater located in the flue gas channel downstream of the economizers, a fabric filter baghouse located in the flue gas channel downstream of the air preheater, and downstream of the fabric filter baghouse is located a selective catalytic reduction (SCR) system including an SCR reactor, a high pressure steam coil heater upstream of the SCR reactor and a gas-gas heat exchanger connected upstream and downstream of the SCR reactor to transfer heat from flue gas after the SCR reactor to the flue gas upstream of the high pressure steam coil heater.

A method of operating and an arrangement for a steam boiler system including a furnace and along a following flue gas channel a number of superheaters, a number of economizers, and at least one air preheater located in the flue gas channel downstream of the economizers, a fabric filter baghouse located in the flue gas channel downstream of the air preheater, and downstream of the fabric filter baghouse is located a selective catalytic reduction (SCR) system including an SCR reactor, a high pressure steam coil heater upstream of the SCR reactor and a gas-gas heat exchanger connected upstream and downstream of the SCR reactor to transfer heat from flue gas after the SCR reactor to the flue gas upstream of the high pressure steam coil heater.

A flue baffle for a water heater comprises a plurality of holes along a length of the baffle and a plurality of bent blades along the length of the baffle, where each hole of the plurality of holes is adjacent to a bent blade of the plurality of bent blades. The holes are configured to permit flue gas to pass through the holes. The bent blades can have an alternating pattern where a first bent blade extends from one side of the baffle and the next bent blade extends from an opposite side of the baffle. A press tool for forming the baffle comprises a piercing tool for forming the plurality of holes and a lance and fold die for forming the bent blades.

Devices, systems, and methods for carbon capture optimization in industrial facilities are disclosed herein. An example carbon capture process involves cooling a flue gas stream using at least one gas-to-air heat exchanger disposed upstream of a carbon dioxide (CO2) absorber. Another example carbon capture process involves heating a heat medium for solvent regeneration and CO2 stripping using a fired heater and/or using at least one waste heat recovery unit.

An excess enthalpy combustion device includes a furnace body and a feed mechanism disposed on one side of the furnace body. A flue gas outlet is provided on the furnace body. A wall of the furnace body includes a refractory material layer, an electric heating layer, and an insulating layer that are arranged in sequence from inside to outside. Two horizontal first refractory partitions which are staggered in the vertical direction are provided in an upper layer of the furnace body. Four vertical second refractory partitions which are staggered in the horizontal direction are provided in a lower layer of the furnace body; a third refractory partition parallel to a side wall is provided on the other side of the furnace body opposite to a grate mechanism. The combustion device adopts an electric heater to heat the furnace body when the electric heater is powered on.

An excess enthalpy combustion device includes a furnace body and a feed mechanism disposed on one side of the furnace body. A flue gas outlet is provided on the furnace body. A wall of the furnace body includes a refractory material layer, an electric heating layer, and an insulating layer that are arranged in sequence from inside to outside. Two horizontal first refractory partitions which are staggered in the vertical direction are provided in an upper layer of the furnace body. Four vertical second refractory partitions which are staggered in the horizontal direction are provided in a lower layer of the furnace body; a third refractory partition parallel to a side wall is provided on the other side of the furnace body opposite to a grate mechanism. The combustion device adopts an electric heater to heat the furnace body when the electric heater is powered on.