CN217604777U - Combustion furnace tail gas waste heat utilization system - Google Patents
Combustion furnace tail gas waste heat utilization system Download PDFInfo
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- CN217604777U CN217604777U CN202221667727.1U CN202221667727U CN217604777U CN 217604777 U CN217604777 U CN 217604777U CN 202221667727 U CN202221667727 U CN 202221667727U CN 217604777 U CN217604777 U CN 217604777U
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Abstract
The utility model provides a fire burning furnace tail gas waste heat utilization system belongs to resource reuse technical field, should fire burning furnace tail gas waste heat utilization system including burning structure and recovery structure. The periphery of burning furnace is provided with the heat preservation, fires burning furnace and has seted up the gas vent, and combustion fan can provide the burning air supplement for firing burning furnace. The waste heat recovery device is provided with a hot air inlet and a hot air outlet, the hot air inlet is connected with the exhaust port, the waste heat recovery device is provided with a water inlet pipeline and a water outlet pipeline, the water inlet pipeline and the water outlet pipeline are both connected with the hot water tank, the waste heat recovery device and the hot water tank form a circulation exchange system, the hot water tank is connected with the reboiler, and the hot water tank and the reboiler form a circulation exchange system. Wherein, the waste heat recovery device and the hot water tank carry out the circulation exchange system, and the hot water tank and the reboiler carry out the circulation exchange system. Make the utility model provides a current heat-cycle system after the circulation, hot-blast direct discharge causes the great problem of heat loss.
Description
Technical Field
The utility model relates to a resource reuse technical field particularly, relates to a fire burning furnace tail gas waste heat utilization system.
Background
The combustion furnace is an energy conversion device, the energy input to the combustion furnace is chemical energy and electric energy in fuel, and the combustion furnace output has certain steam, high-temperature water or organic carriers. Wherein, in the burning furnace heating use, the flue gas that fires burning furnace output has a large amount of heats, directly discharges the heat into the atmosphere in, can cause the waste of the energy, is not conform to energy-conserving theory, and along with the growing in shortage of the energy, the energy-conserving performance of each equipment is also becoming perfect in the life day.
In the existing hot air circulating system for producing hydrogen fluoride, heat is completed by gas combustion and air supplement amount of a combustion fan, hot air heated by a reaction furnace is about 380-400 ℃, and the circulated hot air is discharged by an exhaust funnel, so that the heat loss is large.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a fire burning furnace tail gas waste heat utilization system aims at solving current heat-cycle system and after the circulation, hot-blast direct discharge causes the great problem of heat loss.
The embodiment of the utility model provides a fire burning furnace tail gas waste heat utilization system, including burning structure and recovery structure.
The combustion structure comprises a combustion furnace and a combustion-supporting fan, a heat insulation layer is arranged on the periphery of the combustion furnace, an exhaust port is formed in the combustion furnace, and the combustion-supporting fan can supply combustion air for the combustion furnace.
The recovery structure, the recovery structure includes waste heat recovery device, hot-water tank and reboiler, waste heat recovery device has seted up hot-blast import and hot air exitus, hot-blast import links to each other with the gas vent, waste heat recovery device is provided with inlet line and outlet line, inlet line all is connected with the hot-water tank with outlet line, waste heat recovery device forms circulation exchange system with the hot-water tank, the hot-water tank is connected with the reboiler, the hot-water tank forms circulation exchange system with the reboiler.
In this embodiment, the circulating water in the waste heat recovery device is heated to about 50 ℃ in the waste heat recovery device, the hot water is sent to the hot water tank for use, and the temperature of the circulating water is about 20 ℃ and then enters the waste heat recovery device to be heated to 50 ℃ for recycling. And (4) conveying the hot water in the hot water tank to a reboiler for process use, and feeding the circulated water into the hot water tank for circulation again. The original steam quantity is greatly saved by recycling for many times.
The utility model discloses an among the embodiment, waste heat recovery device adopts shell and tube type waste heat recovery device.
In this embodiment, waste heat recovery device adopts shell and tube waste heat recovery device for the pipe side is walked to the flue gas, and the shell side is walked to water, utilizes the tail gas temperature, heats water, and combustion gas is coal gas, does not relate to low temperature corrosion.
The utility model discloses an in the embodiment, waste heat recovery device's both ends are provided with first valve respectively.
In this embodiment, the two ends of the waste heat recovery device are respectively provided with a first valve. The first valve can close and connect the waste heat recovery device when waste heat is not required to be discharged into the waste heat recovery device, so that the waste heat discharged from the combustion furnace is discharged through other pipelines.
The utility model discloses an in the embodiment, the water intake line is provided with first tubing pump.
In this embodiment, the water inlet pipeline is provided with a first pipeline pump, so that heat exchange between the waste heat recovery device and the hot water tank is performed.
The utility model discloses an in the embodiment, the hot-water tank is provided with the second tubing pump with the reboiler junction.
In this embodiment, a second pipeline pump is provided at the connection between the hot water tank and the reboiler, so that the hot water tank and the reboiler exchange cold and hot water.
The utility model discloses an among the embodiment, retrieve the structure and still including overhauing bypass line, overhaul bypass line and connect in the gas vent.
In this embodiment, overhaul bypass line and connect in the gas vent, can be so that close waste heat recovery device or waste heat recovery device and break down, when needing the maintenance, the waste heat is discharged through overhauing bypass line.
The utility model discloses an in the embodiment, the both ends of overhauing bypass line are provided with the second valve respectively.
In this embodiment, the two ends of the service bypass line are respectively provided with a second valve. The second valve can close the overhaul bypass pipeline when the waste heat recovery device works, so that the waste heat is recycled through the waste heat recovery device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a waste heat utilization system for combustion furnace exhaust gas provided by an embodiment of the present invention.
An icon: 10-a combustion furnace tail gas waste heat utilization system; 100-a combustion configuration; 110-a combustion furnace; 111-insulating layer; 113-exhaust port; 130-combustion-supporting fan; 300-a recovery structure; 310-a waste heat recovery device; 311-hot air inlet; 313-a hot air outlet; 315-first valve; 317-shell-and-tube heat exchanger; 320-a hot water tank; 330-a reboiler; 340-a water inlet line; 350-water outlet line; 360-a first tubing pump; 370-a second tubing pump; 380-service bypass line; 381-second valve.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
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; 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 present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 1, the present invention provides a waste heat utilization system 10 for exhaust gas of a combustion furnace, including a combustion structure 100 and a recovery structure 300.
Referring to fig. 1, the combustion structure 100 includes a combustion furnace 110 and a combustion fan 130, an insulating layer 111 is disposed on the periphery of the combustion furnace 110, an exhaust port 113 is disposed on the combustion furnace 110, and the combustion fan 130 can provide combustion air for the combustion furnace 110.
In this embodiment, a specific implementation manner is that the heat of the hot air circulation system for producing hydrogen fluoride is completed by gas combustion and the air supplement amount of the combustion fan 130, the hot air heated by the combustion furnace 110 is at about 380-400 ℃, and the excess hot air after circulation is discharged from the exhaust port 113.
Referring to fig. 1, the recycling structure 300 includes a waste heat recycling device 310, a hot water tank 320 and a reboiler 330, the waste heat recycling device 310 is provided with a hot air inlet 311 and a hot air outlet 313, the hot air inlet 311 is connected to the exhaust port 113, the waste heat recycling device 310 is provided with a water inlet pipeline 340 and a water outlet pipeline 350, the water inlet pipeline 340 and the water outlet pipeline 350 are both connected to the hot water tank 320, the waste heat recycling device 310 and the hot water tank 320 form a circulation exchange system, the hot water tank 320 is connected to the reboiler 330, and the hot water tank 320 and the reboiler 330 form a circulation exchange system.
In this embodiment, a specific implementation manner is that cold water is added through the water inlet line 340 to the waste heat entering the waste heat recovery device 310 from the hot air inlet 311, the circulating water in the waste heat recovery device 310 is heated to about 50 ℃ in the waste heat recovery device 310, and then is conveyed to the hot water tank 320 through the water outlet line 350 for use, and the temperature of the circulating water enters the waste heat recovery device 310 again at about 20 ℃ and is heated to 50 ℃ for recycling. The hot water in the hot water tank 320 is sent to the reboiler 330 for process use, and the circulated water enters the hot water tank 320 for circulation again. The original steam quantity is greatly saved by recycling for many times.
Specifically, referring to fig. 1, the waste heat recovery device 310 employs a shell-and-tube heat exchanger 317. The flue gas passes through the tube pass, the water passes through the shell pass, the water is heated by utilizing the temperature of the tail gas, the combustion gas is coal gas, and the low-temperature corrosion is not involved.
Specifically, referring to fig. 1, two ends of the waste heat recovery device 310 are respectively provided with a first valve 315. The first valve 315 can close the first valve 315 when the waste heat does not need to be discharged into the waste heat recovery device 310 or when the waste heat recovery device 310 needs to be repaired or maintained, so that the water discharge pipeline connected to the waste heat recovery device 310 is closed, and the waste heat discharged from the combustion furnace 110 is discharged through the air discharge pipeline.
Specifically, referring to fig. 1, the water inlet line 340 is provided with a first channel pump 360. So that the waste heat recovery device 310 and the hot water tank 320 perform heat exchange between smoke and gas.
Specifically, referring to fig. 1, a second pipeline pump 370 is disposed at a connection between the hot water tank 320 and the reboiler 330. So that the hot water tank 320 and the reboiler 330 perform cold and hot water exchange.
Specifically, referring to fig. 1, the recycling structure 300 further includes a bypass line 380, and the bypass line 380 is connected to the exhaust port 113. It is possible to allow the waste heat to be discharged through the service bypass line 380 when the waste heat recovery device 310 is turned off or when the waste heat recovery device 310 malfunctions and requires maintenance.
Specifically, referring to fig. 1, the two ends of the service bypass line 380 are respectively provided with a second valve 381. The second valve 381 can close the second valve 381 when the waste heat recovery device 310 operates, and the service bypass line 380 is closed, so that the waste heat is recycled by the waste heat recovery device 310.
The embodiment of the utility model provides a fire burning furnace tail gas waste heat utilization system 10's theory of operation does: firstly, the heat of the hot air circulating system for hydrogen fluoride production is completed by gas combustion and air supplement amount of a combustion fan 130, the hot air heated by the combustion furnace 110 is about 380-400 ℃, and the circulating redundant hot air is discharged from an exhaust port 113. The surplus hot air enters the waste heat recovery device 310 from the hot air inlet 311, cold water is added through the water inlet pipeline 340, circulating water in the waste heat recovery device 310 is heated to about 50 ℃ in the waste heat recovery device 310, then the circulating water is conveyed to the hot water tank 320 through the water outlet pipeline 350 for use, the circulating water temperature enters the waste heat recovery device 310 again at about 20 ℃ and is heated to 50 ℃, and the circulating water is recycled. The hot water in the hot water tank 320 is sent to the reboiler 330 for process use, and the circulated water enters the hot water tank 320 for circulation again. The original steam quantity is greatly saved by recycling for many times. The problem of current heat-cycle system after the circulation, hot-blast direct discharge causes the heat loss great is solved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A combustion furnace tail gas waste heat utilization system is characterized by comprising
The combustion structure comprises a combustion furnace and a combustion-supporting fan, wherein a heat insulation layer is arranged on the periphery of the combustion furnace, the combustion furnace is provided with an exhaust port, and the combustion-supporting fan can provide wind energy for the combustion furnace;
the recycling structure comprises a waste heat recycling device, a hot water tank and a reboiler, the waste heat recycling device is provided with a hot air inlet and a hot air outlet, the hot air inlet is connected with the exhaust port, the waste heat recycling device is provided with a water inlet pipeline and a water outlet pipeline, the water inlet pipeline and the water outlet pipeline are both connected with the hot water tank, the waste heat recycling device is connected with the hot water tank to form a circulation exchange system, the hot water tank is connected with the reboiler, and the hot water tank is connected with the reboiler to form a circulation exchange system.
2. The combustion furnace tail gas waste heat utilization system as claimed in claim 1, characterized in that the waste heat recovery device adopts a shell-and-tube heat exchanger.
3. The combustion furnace tail gas waste heat utilization system as claimed in claim 1, characterized in that two ends of the waste heat recovery device are respectively provided with a first valve.
4. The combustion furnace tail gas waste heat utilization system as claimed in claim 1, wherein the water inlet pipeline is provided with a first pipeline pump.
5. The combustion furnace tail gas waste heat utilization system as claimed in claim 1, wherein a second pipeline pump is arranged at the joint of the hot water tank and the reboiler.
6. The furnace tail gas waste heat utilization system of claim 1, wherein the recovery structure further comprises a service bypass line connected to the exhaust port.
7. The combustion furnace tail gas waste heat utilization system as claimed in claim 6, characterized in that two ends of the service bypass line are respectively provided with a second valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221667727.1U CN217604777U (en) | 2022-06-29 | 2022-06-29 | Combustion furnace tail gas waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221667727.1U CN217604777U (en) | 2022-06-29 | 2022-06-29 | Combustion furnace tail gas waste heat utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217604777U true CN217604777U (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221667727.1U Active CN217604777U (en) | 2022-06-29 | 2022-06-29 | Combustion furnace tail gas waste heat utilization system |
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| Country | Link |
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| CN (1) | CN217604777U (en) |
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2022
- 2022-06-29 CN CN202221667727.1U patent/CN217604777U/en active Active
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