CN212157228U

CN212157228U - Smoke heat exchanger

Info

Publication number: CN212157228U
Application number: CN202020569775.1U
Authority: CN
Inventors: 李永君; 高辉; 唐翌群
Original assignee: CHANGZHOU ENERGY ENGINEERING CO LTD
Current assignee: Changzhou Energy Equipment Co.,Ltd.
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-15
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a flue gas heat exchanger, which comprises a furnace body and an organic heat carrier pipe group, wherein a flue gas inlet, a dust settling chamber, a radiation chamber, a convection chamber and a flue gas outlet which are communicated in sequence are arranged in the furnace body; the organic heat carrier pipe group comprises an inlet collecting pipe, a heat convection coil pipe, a radiation chamber furnace pipe, a radiation chamber ceiling pipe and an outlet collecting pipe which are sequentially communicated, wherein the heat convection coil pipe is arranged in the convection chamber, and the radiation chamber furnace pipe and the radiation chamber ceiling pipe are respectively arranged in the radiation chamber. The utility model discloses a flue gas gets into the convection chamber behind dust deposit room and radiant chamber in, has solved the super membrane temperature damage of organic heat carrier in the coiler that the high heat load of ultra-temperature flue gas to the convection coil brought, has also solved the stifled ash and the wearing and tearing of high temperature flue gas to the convection coil because of having a large amount of dusts simultaneously.

Description

Smoke heat exchanger

Technical Field

The utility model relates to a flue gas heat exchanger belongs to organic heat carrier heating furnace technical field.

Background

At present, a general ultra-high temperature flue gas heat exchanger generally adopts a pure convection heat exchange coil structure, but to ultra-high temperature flue gas, the pure convection heat exchange coil structure easily causes the heat exchange coil to cause an organic heat carrier overtemperature membrane in the pipe due to the ultra-high heat flux density of heat exchange, thereby causing the damage of the convection heat exchange coil. Meanwhile, a large amount of dust and incompletely combusted particles often exist in the ultrahigh-temperature flue gas, and a convection heat exchange coil is extremely easy to block, so that the normal operation of the heat exchanger is influenced.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art's defect, provide a gas heater, the flue gas enters the convection current after dust deposit room and radiant chamber in, has solved the super membrane temperature damage of the interior organic heat carrier of coiler that ultra-temperature flue gas brought the high heat load of convection current heat transfer coiler effectively, has also solved the stifled ash and the wearing and tearing of high temperature flue gas because of having a large amount of dusts to the convection current heat transfer coiler simultaneously.

In order to solve the technical problem, the technical scheme of the utility model is that: a flue gas heat exchanger comprising:

the furnace body is internally provided with a flue gas inlet, a dust settling chamber, a radiation chamber, a convection chamber and a flue gas outlet which are sequentially communicated;

the organic heat carrier pipe group, the organic heat carrier pipe group is including the import collector, the heat convection coil pipe, radiation chamber boiler tube, radiation chamber ceiling pipe and the export collector that communicate in proper order, the heat convection coil pipe sets up in the convection chamber, radiation chamber boiler tube and radiation chamber ceiling pipe set up respectively in the radiation chamber.

Further, in order to conveniently discharge the dust in the convection chamber of the radiation chamber, the flue gas heat exchanger also comprises two dust discharging devices, one dust discharging device is connected with the radiation chamber to discharge the dust in the radiation chamber, and the other dust discharging device is connected with the convection chamber to discharge the dust in the convection chamber.

The ash discharging device comprises an ash discharging hopper and a discharging valve, wherein an inlet of the ash discharging hopper is communicated with the bottom of the radiation chamber or the convection chamber to receive dust, and the discharging valve is arranged at the outlet of the ash discharging hopper to control the opening and closing of the outlet.

Further, in order to reduce heat loss, the outer surface of the furnace body is provided with a heat insulation layer.

Furthermore, at least one section of the radiation chamber is positioned above the dust settling chamber, the convection chamber is positioned on the side of the radiation chamber, the flue gas inlet is arranged on the side of the dust settling chamber, and the flue gas outlet is arranged on the side of the convection chamber.

Further, the inlet header and the flue gas outlet are located on the same side of the convection chamber.

Further in order to facilitate the removal of dust from the dust settling chamber, the dust settling chamber is provided with at least one openable dust removal door.

Further, in order to prevent the whole flue gas heat exchanger from exploding so as to improve the safety of the whole flue gas heat exchanger, the dust settling chamber is provided with an explosion-proof door.

Furthermore, the convection chambers are arranged in parallel, and each convection chamber is internally provided with a convection heat exchange coil.

After the technical scheme is adopted, when the flue gas heat exchanger operates, the organic heat carrier firstly enters the inlet header, sequentially flows through the convection heat exchange coil, the radiation chamber furnace tube and the radiation chamber ceiling tube, and finally flows out of the outlet header, the high-temperature flue gas enters the dust settling chamber through the flue gas inlet, the dust in the high-temperature flue gas is settled in the dust settling chamber to a certain extent, the high-temperature flue gas enters the radiation chamber and the convection chamber, after the heat exchange with the radiation chamber furnace tube, the radiation chamber ceiling tube and the convection heat exchange coil in a convection manner, the flue gas flows out from the flue gas outlet, the high-temperature flue gas is firstly settled in the dust settling chamber and then enters the convection chamber after the heat exchange in the radiation chamber, when the flue gas enters the convection chamber, the dust content and the amount of incompletely-burned particles in the flue gas are greatly reduced, the temperature is also greatly reduced, the blockage of the convection heat exchange coil in the convection chamber is effectively avoided, and the super-high heat load of The membrane temperature is damaged, the utility model has reasonable structure and good heat exchange effect; the utility model discloses a radiation chamber and convection chamber install out grey device respectively, and then conveniently clear up the dust in it.

Drawings

Fig. 1 is a schematic structural view of a flue gas heat exchanger of the present invention;

fig. 2 is a sectional view a-a of fig. 1.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

As shown in fig. 1 and 2, a flue gas heat exchanger includes:

the furnace body is internally provided with a dust settling chamber 1, a radiation chamber 2, a convection chamber 3, a flue gas inlet 4 communicated with the dust settling chamber 1 and a flue gas outlet 15 communicated with the convection chamber 3, wherein the radiation chamber 2 is communicated with the dust settling chamber 1, and the convection chamber 3 is communicated with the radiation chamber 2;

organic heat carrier pipe group, organic heat carrier pipe group is including the import collector 5, the heat convection coil 6, radiation chamber boiler tube 7, radiation chamber ceiling pipe 8 and the export collector 9 that communicate in proper order, heat convection coil 6 sets up in convection chamber 3, radiation chamber boiler tube 7 and radiation chamber ceiling pipe 8 set up respectively in radiation chamber 2.

In this embodiment, an inlet of the convection heat exchange coil 6 is communicated with an inlet header 5, an inlet of the radiation chamber furnace tube 7 is communicated with an outlet of the convection heat exchange coil 6, an inlet of the radiation chamber ceiling tube 8 is communicated with an outlet of the radiation chamber furnace tube 7, and an outlet header 9 is communicated with an outlet of the radiation chamber ceiling tube 8.

Specifically, when the flue gas heat exchanger is operated, the organic heat carrier firstly enters the inlet header 5, sequentially flows through the convection heat exchange coil 6, the radiation chamber furnace tube 7 and the radiation chamber ceiling tube 8, and finally flows out of the outlet header 9, the high-temperature flue gas enters the dust settling chamber 1 through the flue gas inlet 4, the high-temperature flue gas enters the radiation chamber 2 and the convection chamber 3 after the dust in the high-temperature flue gas is settled in the dust settling chamber 1 to a certain extent, the flue gas enters the convection chamber 3 after the heat exchange with the radiation chamber furnace tube 7 and the radiation chamber ceiling tube 8 through the radiation heat exchange and the convection heat exchange coil 6 through the flue gas outlet 15, the high-temperature flue gas is firstly settled in the dust settling chamber 1 and then enters the convection chamber 3 after the heat exchange with the radiation chamber 2 through the radiation heat exchange, the dust content and the amount of incompletely combusted particles in the flue gas are greatly reduced, the temperature is also greatly reduced, and the blockage of the convection heat exchange coil 6 in, also avoided the ultra-temperature flue gas to damage the super membrane temperature of the interior organic heat carrier of coiler that the high heat load of convection heat transfer coiler 6 brought, the utility model discloses rational in infrastructure, the heat transfer is effectual.

As shown in fig. 1, in order to facilitate the discharge of the dust in the convection chamber 3 from the radiation chamber 2, the flue gas heat exchanger further comprises two dust discharging devices, one of which is connected to the radiation chamber 2 for discharging the dust in the radiation chamber 2 and the other of which is connected to the convection chamber 3 for discharging the dust in the convection chamber 3.

As shown in fig. 1, the ash discharging device comprises an ash discharging hopper 10 and a discharge valve 11, wherein an inlet of the ash discharging hopper 10 is communicated with the bottom of the radiation chamber 2 or the convection chamber 3 to receive dust, and the discharge valve 11 is arranged at an outlet position of the ash discharging hopper 10 to control the opening and closing of the outlet.

In this embodiment, the lower ends of the radiation chamber 2 and the convection chamber 3 are open, and the inlet end of the ash hopper 10 is installed at the lower end of the radiation chamber 2 or the convection chamber 3.

As shown in fig. 1 and 2, in order to reduce heat loss, the outer surface of the furnace body is provided with an insulating layer 12.

As shown in fig. 1, at least one section of the radiation chamber 2 is located above the dust settling chamber 1, the convection chamber 3 is located at the side of the radiation chamber 2, the flue gas inlet 4 is opened at the side of the dust settling chamber 1, and the flue gas outlet 15 is opened at the side of the convection chamber 3.

In this embodiment the inlet header 5 and the flue gas outlet 15 are located on the same side of the convection chamber 3.

As shown in fig. 1, in order to facilitate the removal of dust from the dust settling chamber 1, the dust settling chamber 1 is provided with at least one openable and closable dust removal door 13.

As shown in fig. 1, in order to prevent the explosion of the whole flue gas heat exchanger to improve its safety, the dust settling chamber 1 is equipped with an explosion vent 14.

As shown in fig. 1, two convection chambers 3 are arranged in parallel, and a convection heat exchange coil 6 is arranged in each convection chamber 3.

The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims

1. A flue gas heat exchanger is characterized in that,

it includes:

the furnace body is internally provided with a flue gas inlet (4), a dust settling chamber (1), a radiation chamber (2), a convection chamber (3) and a flue gas outlet (15) which are sequentially communicated;

organic heat carrier nest of tubes, organic heat carrier nest of tubes is including import collector (5), convection heat transfer coiled pipe (6), radiation chamber boiler tube (7), radiation chamber ceiling pipe (8) and export collector (9) that communicate in proper order, convection heat transfer coiled pipe (6) set up in convection chamber (3), radiation chamber boiler tube (7) and radiation chamber ceiling pipe (8) set up respectively in radiation chamber (2).

2. The flue gas heat exchanger according to claim 1,

and the dust collector also comprises two dust discharging devices, one dust discharging device is connected with the radiation chamber (2) to discharge dust in the radiation chamber (2), and the other dust discharging device is connected with the convection chamber (3) to discharge dust in the convection chamber (3).

3. The flue gas heat exchanger according to claim 2,

the ash discharging device comprises an ash discharging hopper (10) and a discharging valve (11), wherein an inlet of the ash discharging hopper (10) is communicated with the bottom of the radiation chamber (2) or the convection chamber (3) to receive dust, and the discharging valve (11) is installed at the outlet of the ash discharging hopper (10) to control the opening and closing of the outlet.

4. The flue gas heat exchanger according to claim 1,

the outer surface of the furnace body is provided with a heat preservation layer (12).

5. The flue gas heat exchanger according to claim 1,

at least one section of portion of radiation chamber (2) is located the top of dust settling chamber (1), convection chamber (3) are located the side of radiation chamber (2), flue gas inlet (4) are seted up the side of dust settling chamber (1), flue gas outlet (15) are seted up the side of convection chamber (3).

6. The flue gas heat exchanger according to claim 5,

the inlet header (5) and the flue gas outlet (15) are located on the same side of the convection chamber (3).

7. The flue gas heat exchanger according to claim 1,

the dust settling chamber (1) is provided with at least one openable dust removal door (13).

8. The flue gas heat exchanger according to claim 1,

the dust settling chamber (1) is provided with an explosion-proof door (14).

9. The flue gas heat exchanger according to claim 1,

the convection chambers (3) are arranged in parallel, and each convection chamber (3) is internally provided with a heat convection coil (6).