CN220186853U - Flue gas waste heat recovery device - Google Patents
Flue gas waste heat recovery device Download PDFInfo
- Publication number
- CN220186853U CN220186853U CN202321947355.2U CN202321947355U CN220186853U CN 220186853 U CN220186853 U CN 220186853U CN 202321947355 U CN202321947355 U CN 202321947355U CN 220186853 U CN220186853 U CN 220186853U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- pipeline
- air
- recovery device
- heat recovery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 239000003546 flue gas Substances 0.000 title claims abstract description 122
- 238000011084 recovery Methods 0.000 title claims abstract description 21
- 239000002918 waste heat Substances 0.000 title claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 4
- 239000000779 smoke Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Air Supply (AREA)
Abstract
The utility model provides a flue gas waste heat recovery device, which comprises a flue gas pipeline and an air pipeline, wherein the flue gas pipeline is sleeved with the air pipeline, one end of an inlet of the flue gas pipeline is connected with a smoke outlet of a cremation machine, an exhaust outlet of the other end of the flue gas pipeline is connected with flue gas treatment equipment, a preheated air inlet is arranged at a position, corresponding to the exhaust outlet of the flue gas pipeline, of one end of the air pipeline, the other end of the air pipeline is connected with a combustion device air supply system, so that heat exchange is performed between flue gas discharged by the cremation machine and preheated air, heat conversion is performed between air in the air pipeline and flue gas in the flue gas pipeline, and the influence of heat carried in the flue gas on indoor temperature in a cremation workshop is reduced; meanwhile, the air carrying heat energy is used for the air supply system of the combustion device, so that the heat of the flue gas is further recycled, and the effects of energy conservation and emission reduction are achieved.
Description
Technical Field
The utility model relates to the technical field of heat exchange systems, in particular to a flue gas waste heat recovery device.
Background
In the operation process of the cremation machine, high-heat smoke is generated, and the existing smoke conveying device comprises an upper discharge type conveying mode and a lower discharge type conveying mode, so that the lower discharge type conveying is more currently used in China.
And (3) conveying the downward exhaust type flue gas: the high-temperature flue gas generated by the cremator is conveyed to a flue gas treatment workshop through an underground flue gas channel, and the cremator has the advantages that no high-temperature pipeline exists in the cremator, the cremator is suitable in temperature, and the cremator has the defects of high cost and long period in building the underground flue gas channel and has great influence on normal operation of the cremator.
Upper exhaust type flue gas conveying: the high-temperature flue gas generated in the cremation workshop is conveyed to a flue gas treatment workshop through the flue pipe, and has the advantages of convenience in installation, short construction period, relatively small influence on normal operation of the cremation workshop, and high temperature in the cremation workshop, and even if heat preservation and heat insulation measures are added, the phenomenon of high temperature in the cremation workshop exists.
Disclosure of Invention
The utility model aims to solve the problem of high temperature of a cremation workshop caused by an upper discharge type flue gas conveying mode, and provides a flue gas waste heat recovery device.
The utility model provides a flue gas waste heat recovery device which comprises a flue gas pipeline and an air pipeline, wherein the flue gas pipeline is sleeved with the air pipeline, one end of an inlet of the flue gas pipeline is connected with a smoke outlet of a cremation machine, an exhaust outlet of the other end of the flue gas pipeline is connected with flue gas treatment equipment, a preheated air inlet is formed in the position, corresponding to the exhaust outlet of the flue gas pipeline, of one end of the air pipeline, and the other end of the air pipeline is connected with a combustion device air supply system so that heat exchange is performed between flue gas exhausted by the cremation machine and preheated air.
Preferably, the air pipeline is connected with the air supply system of the combustion device through a turbine square box, and the flue gas pipeline is provided with an elbow corresponding to the inside of the turbine square box.
Preferably, the flue gas pipeline and the air pipeline are both U-shaped pipelines.
Preferably, the flue gas pipeline is connected with the flue gas treatment equipment through a flue gas exhaust pipe, and an injection air pipeline is arranged on the flue gas exhaust pipe.
Preferably, the inner pipeline inserted into the smoke exhaust pipe in the air injection pipeline is of a conical structure, and the diameter of the inner pipeline is gradually reduced in the smoke flowing direction.
Preferably, the smoke exhaust pipe comprises a venturi tube, and the venturi tube is positioned at the upper end position of the air outlet of the air injection pipeline.
Preferably, a high-temperature sealing gasket is arranged on the turbine square box at the position corresponding to the inlet of the elbow.
Preferably, a plurality of spoilers are arranged on the outer wall of the flue gas pipeline.
Preferably, the flue gas pipeline is of a threaded pipe structure.
The beneficial effects of the utility model are as follows: the utility model provides a flue gas waste heat recovery device, which has the following beneficial effects.
The utility model designs a flue gas discharge pipeline into an inner layer and an outer layer sleeved pipeline structure, and connects the pipeline positioned at the inner layer as a flue gas pipeline with a cremation machine, and continuously inputs air in the outer layer pipeline to form heat exchange between flue gas and air, and conveys the air subjected to the heat exchange into a combustion device air supply system, thereby avoiding continuous radiation of heat carried in the flue gas in the prior art in a cremation workshop, reducing the influence of heat carried in the flue gas on indoor temperature in the cremation workshop by utilizing heat conversion between the air and the flue gas; meanwhile, the air carrying heat energy is used for a combustion device air supply system, so that the heat of the flue gas is further recycled, and the effects of energy conservation and emission reduction are realized;
in order to improve the heat exchange effect between the flue gas and the air, the flue gas pipeline and the air pipeline are both U-shaped pipelines, so that the gas flowing time in the flue gas pipeline and the air pipeline is prolonged, and the sufficient heat exchange between the air flows in the flue gas pipeline and the air pipeline is ensured;
the contact area between the elbow and the air in the turbine square box is increased, and the heat exchange effect between the flue gas and the air is further improved, so that the flue gas heat is fully recovered, and the influence of the heat carried in the flue gas on the temperature in a cremation workshop is reduced;
and the smoke exhaust pipe is provided with an injection air pipeline, and the conical structure of the injection air pipeline is matched with the venturi tube, so that the air resistance coefficient of the injected fluid is effectively reduced, and the flue gas subjected to heat exchange can smoothly flow to the flue gas treatment equipment.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a flue gas waste heat recovery device according to the present utility model;
FIG. 2 is a top view of the flue gas waste heat recovery device of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the structure at the position A-A in FIG. 2;
fig. 4 is a schematic cross-sectional view of the structure at the B-B position in fig. 2.
The marks in the figure: 1. the high-temperature sealing gasket comprises a flue gas pipeline, an air pipeline, a turbine square box, an elbow, a smoke exhaust pipe, an injection air pipeline, a venturi tube and a high-temperature sealing gasket.
Detailed Description
The utility model will be further described with reference to the drawings and specific examples to aid in understanding the context of the utility model. The method used in the utility model is a conventional method unless specified otherwise; the raw materials and devices used, unless otherwise specified, are all conventional commercial products.
Example 1:
as shown in fig. 1 to 3, the utility model provides a flue gas waste heat recovery device, which comprises a flue gas pipeline 1 and an air pipeline 2, wherein the air pipeline 2 is sleeved on the outer wall of the flue gas pipeline 1, two ends of the flue gas pipeline 1 are respectively connected with a cremation machine and flue gas treatment equipment, two ends of the air pipeline 2 are respectively connected with a preheating air supply device and a combustion device air supply system, and the flue gas flowing direction in the flue gas pipeline 1 is opposite to the air flowing direction in the air pipeline 2, so that a higher temperature difference is kept between air and flue gas at a corresponding position between the flue gas pipeline 1 and the air pipeline 2, the heat exchange effect between air and flue gas is ensured, the influence of heat carried in flue gas on the air temperature in a cremation workshop is reduced, and the flue gas heat is recycled to realize the purposes of energy conservation and emission reduction.
As shown in fig. 2, in order to improve the heat exchange effect between the flue gas and the air, the flue gas pipeline 1 and the air pipeline 2 are both set to be U-shaped pipelines, so that the gas flowing time in the flue gas pipeline 1 and the air pipeline 2 is increased, the sufficient heat exchange between the air flows in the flue gas pipeline 1 and the air pipeline 2 is ensured, and the influence of the heat carried in the flue gas on the temperature in the cremation workshop is reduced.
Further, the turbine square box 3 and the elbow 4 are respectively arranged at the exhaust port of the air pipeline 2 and the inlet side of the flue gas pipeline 1, and the flue gas temperature at one end, connected with the cremation machine, of the flue gas pipeline 1 is highest, so that the elbow 4 is arranged at the inlet side of the flue gas pipeline 1, the turbine square box 3 is arranged at the position, corresponding to the elbow 4, of the air pipeline 2, the elbow 4 is arranged in the turbine square box 3, the flow speed of air flowing into the turbine square box 3 through the air pipeline 2 is reduced, the contact area between the air and the air in the turbine square box 3 is increased through the arrangement of the elbow 4, the heat exchange effect between the flue gas and the air is further improved, and the full recovery of the flue gas heat is realized.
As shown in fig. 4, a high-temperature sealing gasket 8 is arranged on the turbine square box 3 corresponding to the inlet position of the elbow 4, so that the loss of air heat after heat exchange is avoided, and the requirement of maximization of recycling heat cannot be met.
As shown in fig. 3, the smoke exhaust pipe 5 is in a 90-degree elbow 4 structure, and a venturi tube 7 is arranged at one end of the discharge outlet of the smoke exhaust pipe 5; meanwhile, the smoke exhaust pipe 5 is provided with the injection air pipeline 6, and the air resistance coefficient of the injected fluid is effectively reduced by matching the conical structure of the injection air pipeline 6 with the venturi tube 7, so that the flue gas subjected to heat exchange can smoothly flow to the flue gas treatment equipment.
Example 2:
in this embodiment, be provided with a plurality of spoiler on the outer wall of flue gas pipeline 1 to influence the air flow velocity in the air pipeline 2, thereby increase the heat transfer time between the air in the air pipeline 2 and the flue gas in the flue gas pipeline 1 reaches the abundant heat transfer between preheated air and the flue gas.
Other portions in this embodiment are the same as those in embodiment 1, and thus will not be described in detail.
Example 3:
in this embodiment, the flue gas pipeline 1 adopts the screw thread tube structure, makes the air in the air pipeline 2 receives the screw thread structure influence of flue gas pipeline 1 in the flow in-process, changes the air current direction in the air pipeline 2, forms the detouring to flue gas pipeline 1, realizes carrying out abundant heat transfer between the air in the air pipeline 2 and the flue gas in the flue gas pipeline 1, improves the heat recovery effect of flue gas.
Other portions in this embodiment are the same as those in embodiment 1 or 2, and thus will not be described in detail.
In the description of the present utility model, it should be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must be provided with specific orientations, be configured and operated in specific orientations, and thus are not to be construed as limiting the present utility model.
However, the foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the utility model are intended to fall within the scope of the claims.
Claims (9)
1. The utility model provides a flue gas waste heat recovery device, its characterized in that, includes flue gas pipeline (1) and air line (2), the cover is equipped with air line (2) on flue gas pipeline (1), the entry one end of flue gas pipeline (1) is connected with the exhaust port of cremation machine, and the discharge port of the other end is connected with flue gas treatment facility, the one end of air line (2) corresponds the discharge port position department of flue gas pipeline (1) and is provided with the preheated air entry, the other end and the burner air supply system of air line (2) are connected, make heat transfer between cremation machine exhaust flue gas and the preheated air.
2. The flue gas waste heat recovery device according to claim 1, wherein the air pipeline (2) is connected with a combustion device air supply system through a turbine square box (3), and an elbow (4) is arranged in the flue gas pipeline (1) corresponding to the turbine square box (3).
3. A flue gas waste heat recovery device according to claim 1, wherein the flue gas pipeline (1) and the air pipeline (2) are both U-shaped pipelines.
4. The flue gas waste heat recovery device according to claim 1, wherein the flue gas pipeline (1) is connected with the flue gas treatment equipment through a flue gas exhaust pipe (5), and an injection air pipeline (6) is arranged on the flue gas exhaust pipe (5).
5. The flue gas waste heat recovery device according to claim 4, wherein the inner pipeline inserted into the flue gas exhaust pipe (5) in the injection air pipeline (6) is of a conical structure, and the diameter of the inner pipeline is gradually reduced in the flue gas flowing direction.
6. A flue gas waste heat recovery device according to claim 4, wherein the flue gas exhaust pipe (5) comprises a venturi tube (7), and the venturi tube (7) is located at the upper end position of the air outlet of the air injection pipeline (6).
7. A flue gas waste heat recovery device according to claim 2, wherein a high temperature sealing gasket (8) is arranged on the turbine square box (3) at the position corresponding to the inlet of the elbow (4).
8. A flue gas waste heat recovery device according to claim 1, characterized in that the outer wall of the flue gas pipeline (1) is provided with a plurality of spoilers.
9. A flue gas waste heat recovery device according to claim 1, characterized in that the flue gas pipe (1) is of a threaded pipe structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321947355.2U CN220186853U (en) | 2023-07-24 | 2023-07-24 | Flue gas waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321947355.2U CN220186853U (en) | 2023-07-24 | 2023-07-24 | Flue gas waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220186853U true CN220186853U (en) | 2023-12-15 |
Family
ID=89113259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321947355.2U Active CN220186853U (en) | 2023-07-24 | 2023-07-24 | Flue gas waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220186853U (en) |
-
2023
- 2023-07-24 CN CN202321947355.2U patent/CN220186853U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201582821U (en) | Indirect radiant tube heating device | |
| CN102219346B (en) | System for drying and treating sludge by utilizing afterheat to generate high-temperature circulating air | |
| CN104801174A (en) | Activated coke flue gas purification system | |
| CN205316352U (en) | RTO system with tail gas waste heat recovery function | |
| CN107270728A (en) | The energy conserving system that a kind of super wide roller kiln slow cooling high-temperature residual heat is recycled | |
| CN220186853U (en) | Flue gas waste heat recovery device | |
| CN205774357U (en) | Biological fuel gas bootstrap system | |
| CN203431891U (en) | Soot blowing system for waste heat boiler flue | |
| CN202109741U (en) | Sludge baking and treatment system utilizing waste heat to generate high-temperature circulation air | |
| CN213085806U (en) | Dilution air temperature control system of glass melting furnace | |
| CN204943552U (en) | Boiler rotation flow impact combustion side wall zone high temperature corrosion resistance device | |
| CN205262229U (en) | Slag afterheat recycling device | |
| CN206274226U (en) | A kind of heating furnace waste-heat recoverer | |
| CN102878818A (en) | Heat supply system using waste heat in self-absorption type negative-pressure adjustable heat carrier furnace | |
| CN208952122U (en) | A kind of device reducing the nitrogen oxides in flue gases of cock oven by waste gas circulation | |
| CN207162532U (en) | Double heat storage type burner and combustion furnace system | |
| CN112179156A (en) | Bypass air-bleeding energy-saving emission-reduction utilization system and process for cooperatively treating waste in cement kiln | |
| CN207501705U (en) | The energy conserving system that a kind of super wide roller kiln slow cooling high-temperature residual heat recycles | |
| CN202522092U (en) | Kiln residual heat utilization energy saving device | |
| CN102589309A (en) | Energy-saving process and energy-saving device for utilization of kiln waste | |
| CN211781392U (en) | Quantum energy hot air circulating system | |
| CN208649218U (en) | A kind of tube furnace waste heat utilization device | |
| CN205424887U (en) | Fan heater cyclic utilization system is united to low -level (stack -gas) economizer | |
| CN218864815U (en) | Novel sintering flue gas circulation process arrangement structure | |
| CN214249672U (en) | Fluidized air system for solving fly ash deposition in flue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |