15results about "Flue gas duct system" patented technology

A method of recovering carbon dioxide from flue gases of a plurality of carbon dioxide emitters (1, 2, 3, 4) of a process plant network (100) is proposed, wherein the carbon dioxide emitters (1, 2, 3, 4) comprise individual flue gas ducts (11) operated at individual flue gas duct pressures, wherein each of the individual flue gas ducts (11) is connected via a pressure maintaining valve (13) to a common flue gas collecting duct (10), wherein each of the individual flue gas ducts (11) is connected via a flue gas flap (14) to an individual or common flue gas release unit (15), wherein the flue gas collecting duct (10) is connected to a carbon dioxide removal arrangement (20) including a flue gas blower (21), wherein the method comprises controlling flue gas duct pressures in the individual flue gas ducts (11) by operating the pressure maintaining valves (13) using flue gas duct pressure set values, the flue gas duct pressure set values corresponding to pressures required to release the respective flue gas via the individual or common flue gas release unit (15) at an opened state of the respective flue gas flap (14) to the atmosphere, and wherein the method further comprises adjusting a pressure in the flue gas collecting duct (10) by operating the flue gas blower (21). A process plant network (100) is also proposed.

Processes and apparatuses for heating process fluid in a furnace. Fuel to the furnace is either hydrocarbons or hydrogen. The fuels may be sent to different furnaces or be sent at different times to the same furnace. Furnaces that are configured to receive both types of fuels may have different exhaust paths. An exhaust path for hydrocarbon fuel flue gas includes a carbon capture process zone.

A double-walled flue or chimney system (1) comprises a plurality of elements (2) which can be coupled to each other to form a flue or chimney; each element (2) extends along an axis (A) between two longitudinal ends (3, 4) and comprises an inner tube (5) and an outer tube (6), radially spaced apart and separated by an air gap (7); the inner tube (5) and the outer tube (6) have, at respective axially opposite ends, respective radially enlarged female portions (11, 12) defining connection cups, and respective male portions (13, 14), axially opposite the female portions (11, 12) and insertable in respective female portions (11, 12) of another element of the system; the inner tube (5) and the outer tube (6) are both made of polymeric material, in particular polypropylene (PP) ; the female portions (11, 12) of the inner tube (5) and the outer tube (6) are both located at the same longitudinal end (3) of the element (2). Each element comprises a locking ring (30) for axially and radially positioning the inner tube relative to the outer tube. The locking ring is fluidly air tight in order to create insulating compartment when the elements are connected.

The invention relates to a circulating fluidized bed boiler (10) comprising a vertically extending furnace (12), a separator unit (14), and an exhaust gas channel (18) connected to the separator unit (14) via a cross pipe (24), the exhaust gas channel comprising a first vertically extending passageway (18.1) and a horizontally extending passageway (18.2) and a second vertically extending passageway (18.3). The first vertically extending passageway (18.1) and the horizontally extending passageway (18.2) and the second vertically extending passageway (18.3) are arranged successively in the gas flow direction, such that the horizontally extending passageway (18.2) is configured to connect the first vertically extending passageway (18.1) and the second vertically extending passageway (18.3) to each other, and the horizontally extending passageway (18.2) is arranged below the separator unit (14), which is arranged between the first vertically extending passageway (18.1) and the second vertically extending passageway (18.3).

A chimney is described comprising: - a lower first chimney stage (1) which has a fireplace, - a second chimney stage (2) arranged above the first chimney stage (1) with a first section (4.1) of an exhaust pipe connected to the fireplace, - a third chimney stage (3) arranged above the second chimney stage (2), which is designed as an upper chimney and has a second section (4.2) of the exhaust pipe. It is provided that the first chimney stage (1) and the second chimney stage (2) form a common structural unit which has a common body (100), and that the supporting outer shell (300) of the third chimney stage (3) is directly supported on the head end (100k) of the body (100) and is connected to the head end (100k) of the body (100) via a fastening device, the fastening device having a screw anchor device (320, 340).

A representative system includes: an inner stack defining a flow path to direct exhaust gasses from the exhaust air outlet of a heating appliance to an exhaust; an outer stack disposed about an exterior of the inner stack and being spaced therefrom to form a combustion air passage in a heat transfer relationship with the exterior of the inner stack; a combustion air opening disposed at the intake end of the outer stack configured to receive combustion air and provide the combustion air to the combustion air passage; an air dam positioned to terminate the combustion air passage; a combustion air conduit configured to direct the combustion air from the combustion air passage to the combustion air inlet of the heating appliance; wherein, in operation, heat is transferred from the exhaust gasses to the combustion air directed through the combustion air passage.

A circulating fluidized bed boiler includes a vertically extending furnace, a separator unit, and an exhaust gas channel connected to the separator unit via a cross over duct. The exhaust gas channel includes a first vertically extending pass, a horizontally extending pass, and a second vertically extending pass. The first vertically extending pass, the horizontally extending pass, and the second vertically extending pass are arranged successively in the gas flow direction such that the horizontally extending pass is configured to connect the first vertically extending pass and the second vertically extending pass with each other. The horizontally extending pass is arranged below the separator unit, which is arranged between the first vertically extending pass and the second vertically extending pass.

A vent attachment for a tankless water heater is provided. The vent attachment includes a first conduit and a second conduit. The first conduit includes a first exhaust passage and a first intake passage. The first intake passage includes an adjustable portion having a first adjustable length and a first adjustment mechanism. The second conduit includes a second exhaust passage and a second intake passage. The second intake passage slidably engages the first intake passage. The second intake passage includes a protruding portion having a second adjustable length equal to or greater than the first adjustable length and a second adjustment mechanism. The first adjustment mechanism and the second adjustment mechanism slidably couple the second conduit to the first conduit for a desired length of the vent attachment.

The invention relates to an air supply and flue gas exhaust device for closed-type gas fires (4), comprising a pipe system (1) comprising at least an inner first pipe (2) for flue gas exhaust and an outer second pipe (3) for air supply, wherein the pipe system (1) on the one hand ends in one or more coupling ends (5) for coupling with said gas fires (4) and on the other hand ends in one flue end (6), wherein, in use of the device, a fan (7) for forced discharge of flue gas from the first pipe (2) is placed on said flue end (6). The invention further relates to a method for air supply to and flue gas exhaust from one or more closed-type gas fires (4) in a building, in particular in an apartment building. In addition, the invention relates to a system comprising one or more closed-type gas fires (4) and a device for air supply and flue gas exhaust, a kit and specific uses.

A heat exchange flue has a top flue gas chamber, a bottom flue gas chamber, and a heat exchange section located therebetween that includes a heat exchange tube bundle located in the middle and a left side flue and a right side flue located at two sides of the heat exchange tube bundle. The axis of the heat exchange tube bundle is positioned in a vertical plane extending substantially forward and backward, allowing the flue gas to laterally flush against the surfaces of heat exchange tubes. The left and right side flues are in a vertical box shape, and the flues are each provided with a plurality of flue gas dampers (3). Each of the flue gas dampers is provided with a flue gas damper frame for defining a flue gas port and a flue gas port opening / closing device capable of selectively opening and closing the flue gas port.

Processes and apparatuses for heating process fluid in a furnace. Fuel to the furnace is either hydrocarbons or hydrogen. The fuels may be sent to different furnaces or be sent at different times to the same furnace. Furnaces that are configured to receive both types of fuels may have different exhaust paths. An exhaust path for hydrocarbon fuel flue gas includes a carbon capture process zone.

Processes and apparatuses for heating process fluid in a furnace. Fuel to the furnace is either hydrocarbons or hydrogen. The fuels may be sent to different furnaces or be sent at different times to the same furnace. Furnaces that are configured to receive both types of fuels may have different exhaust paths. An exhaust path for hydrocarbon fuel flue gas includes a carbon capture process zone.

Chimney comprising: - a lower first chimney stage (1) comprising a fireplace (1x), - a second chimney stage (2) arranged above the first chimney stage (1), comprising an exhaust pipe (4.2) extending through the second chimney stage (2) and connected to the fireplace (1x), - a third chimney stage (3) arranged above the second chimney stage (2), which, designed as an upper chimney, comprises a vertical exhaust pipe (43) connected to the exhaust pipe of the second chimney stage (2) to direct the exhaust gas vertically upwards out of the chimney (S) to the outside and preferably comprises a vertical air supply pipe (53) to supply combustion air to the fireplace (1x). It is essential that the fireplace (1x) arranged in the first chimney stage (1) is designed as a hybrid of a storage fireplace and a convection fireplace.

The disclosure relates to a chimney control assembly for minimizing particle emission in a combustion process in a fuel burning heating device connected to a chimney, comprising: a fuel burning heating device (1), a chimney (2) comprising a hollow interior, wherein the fuel burning heating device (1) has an exhaust gas outlet (6) connected to the interior of the chimney via an exhaust inlet (7) arranged in the lower portion of the chimney (2), and the assembly further comprising: two or more sensors (11,12,13,14,15,16), a top mounted fan (4), and a controller (5), wherein the controller comprise: a set of parameters reflecting the specified pressure requirements of the fuel burning heating device (1), input connected to, for reading, the one or more sensors (11,12,13,14,15,16), and output connected to, for controlling, the top mounted fan (4) such that the pressure requirements of the fuel burning heating device (1) can be achieved. The disclosure further relates to a method for optimizing the combustion process in a fuel burning heating device.

A vent attachment for a tankless water heater is provided. The vent attachment includes a first conduit and a second conduit. The first conduit includes a first exhaust pathway and a first air intake pathway. The first air intake pathway includes an adjustable portion having a first adjustable length and a first adjustment mechanism. The second conduit includes a second exhaust pathway and a second air intake pathway. The second air intake pathway slidably engages with the first air intake pathway. The second air intake pathway includes a projecting portion having a second adjustable length equal to or greater than the first adjustable length and a second adjustment mechanism. The first adjustment mechanism and the second adjustment mechanism slidably couple the second conduit with the first conduit for a desired length of the vent attachment.