CN220380349U - Flue gas waste heat utilization system and energy supply system - Google Patents
Flue gas waste heat utilization system and energy supply system Download PDFInfo
- Publication number
- CN220380349U CN220380349U CN202321768234.1U CN202321768234U CN220380349U CN 220380349 U CN220380349 U CN 220380349U CN 202321768234 U CN202321768234 U CN 202321768234U CN 220380349 U CN220380349 U CN 220380349U
- Authority
- CN
- China
- Prior art keywords
- heating
- pipeline
- heat exchange
- branch
- flue gas
- 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 42
- 239000003546 flue gas Substances 0.000 title claims abstract description 42
- 239000002918 waste heat Substances 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 112
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model provides a flue gas waste heat utilization system and an energy supply system, which belong to the technical field of flue gas waste heat utilization and comprise a heating pipeline, a heating structure, a heat exchange pipeline, a heat exchange structure and a return pipeline. The heating pipeline is provided with a water inlet and a water outlet; the heating structures are arranged on the heating pipeline and are arranged in a plurality of at intervals; the heat exchange pipeline is connected with the heating pipeline in parallel; the heat exchange structure is arranged on the heat exchange pipeline; the first end of the return pipeline is connected with the heating pipeline and between the adjacent heating structures, and the second end of the return pipeline is connected with the heat exchange pipeline and downstream of the heat exchange structures. According to the flue gas waste heat utilization system provided by the utility model, when the unit is fully loaded, water heated by the heat exchange structure flows into the heating structure through the return pipeline, and water flows into the water outlet after being heated by the final-stage heating structure; when the load of the unit is lower, the water heated by the heat exchange structure directly flows into the water outlet, and the heating of the final heating structure is not needed, so that the energy saving effect is in the optimal state.
Description
Technical Field
The utility model relates to the technical field of flue gas waste heat utilization, in particular to a flue gas waste heat utilization system and an energy supply system.
Background
At present, in order to relieve energy consumption pressure, energy saving work is continuously carried out, and for millions of unit boilers, how to utilize the waste heat of the flue gas is a key for energy saving. In the prior art, water is heated through a flue gas waste heat utilization system, and heated backwater enters a heating structure for further heating. However, in practical application, when the load of the power unit is low, the temperature of the backwater heated by the flue gas waste heat utilization system is close to or exceeds the temperature of the backwater heated by the heating structure, so that energy waste is caused.
Disclosure of Invention
Therefore, the utility model aims to solve the problem of energy waste caused by a flue gas waste heat utilization system in the prior art when the load of a power unit is low, and provides the flue gas waste heat utilization system and the energy supply system.
In order to solve the problems, the utility model provides a flue gas waste heat utilization system, which comprises a heating pipeline, a heating structure, a heat exchange pipeline, a heat exchange structure and a return pipeline. The heating pipeline is provided with a water inlet and a water outlet; the heating structures are arranged on the heating pipeline and are arranged in a plurality of ways at intervals; the heat exchange pipeline is connected with the heating pipeline in parallel; the heat exchange structure is arranged on the heat exchange pipeline; the first end of the return pipeline is connected with the heating pipeline and between the adjacent heating structures, and the second end of the return pipeline is connected with the heat exchange pipeline and downstream of the heat exchange structures.
Optionally, the heat exchange pipeline includes a first branch and a second branch, the second end of the return pipeline communicates with the second end of the first branch and the first end of the second branch at the same time, the first end of the first branch communicates with the first end of the heating pipeline, the second end of the second branch communicates with the second end of the heating pipeline, and the heat exchange structure is disposed on the first branch.
Optionally, the flue gas waste heat utilization system further comprises a control valve group, and the control valve group is arranged corresponding to the second branch and the return pipeline, so that the heat exchange structure is selectively communicated with the second branch or the return pipeline.
Optionally, the control valve group includes a first control valve and a second control valve, the first control valve is disposed on the return line, and the second control valve is disposed on the second branch line.
Optionally, the heating pipeline includes first total way, third branch road and second total way, the first end of first total way with the water inlet intercommunication, the second end of first total way simultaneously with the first end of heat transfer pipeline with the first end of third branch road communicates, the second end of second total way with the delivery port communicates, the first end of second total way simultaneously with the second end of heat transfer pipeline with the second end of third branch road communicates, heating structure set up in the third branch road.
Optionally, the third branch path includes first highway section and second highway section, first highway section with the second highway section intercommunication, return line's first end simultaneously with first highway section with the second highway section intercommunication, a plurality of heating structure includes first heating structure and second heating structure, first heating structure set up in first highway section, second heating structure set up in the second highway section.
Optionally, the first heating structures are arranged at intervals, and the second heating structures are arranged at intervals.
Optionally, the heat exchange structure is a low-temperature economizer.
The utility model also provides an energy supply system which comprises the flue gas waste heat utilization system.
Optionally, the energy supply system further comprises a power unit, and the power unit is communicated with the flue gas waste heat utilization system.
The utility model has the following advantages:
1. according to the flue gas waste heat utilization system provided by the utility model, when the power unit is fully loaded, water heated by the heat exchange structure flows into the heating structure through the return pipeline, and water flows into the water outlet after being heated by the final-stage heating structure; when the load of the power unit is lower, the water heated by the heat exchange structure directly flows into the water outlet, and the final stage heating structure is not needed to carry out secondary heating, so that the energy saving effect is in an optimal state.
2. According to the flue gas waste heat utilization system provided by the utility model, the control valve group is arranged, so that the communication direction of the heat exchange structure can be selected according to the load of the power unit: when the power unit is fully loaded, the control valve group controls the heat exchange structure to be communicated with the return pipeline; when the load of the power unit is lower, the control valve group controls the heat exchange structure to be communicated with the second branch.
3. According to the flue gas waste heat utilization system provided by the utility model, the adjacent first heating structures are sequentially communicated to form gradient heating, so that the heating time is shortened, and the heating efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 shows an overall structure schematic diagram of a flue gas waste heat utilization system provided by an embodiment of the present utility model.
Reference numerals illustrate:
10. a heating pipeline; 11. a water inlet; 12. a water outlet; 13. a first total path; 14. a third shunt; 141. a first road section; 142. a second road section; 15. a second main path; 20. a heating structure; 21. a first heating structure; 22. a second heating structure; 30. a heat exchange pipeline; 31. a first shunt; 32. a second shunt; 40. a heat exchange structure; 50. a return line; 60. a control valve group; 61. a first control valve; 62. and a second control valve.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
In the prior art, water is heated by a flue gas waste heat utilization system, and the heated water needs to enter the final stage heating structure 20 for heating. In practical applications, it is found that when the load of the power unit is low, the water temperature heated by the flue gas waste heat utilization system is already close to or exceeds the water temperature heated by the final heating structure 20, so that the existing flue gas waste heat utilization system needs to be optimized.
One embodiment of a flue gas waste heat utilization system, as shown in fig. 1, includes a heating circuit 10, a heating structure 20, a heat exchange circuit 30, a heat exchange structure 40, and a return circuit 50. The heating pipeline 10 is provided with a water inlet 11 and a water outlet 12; the heating structures 20 are arranged on the heating pipeline 10 and are arranged in a plurality of intervals; the heat exchange pipeline 30 is arranged in parallel with the heating pipeline 10; the heat exchange structure 40 is arranged on the heat exchange pipeline 30; the first end of the return line 50 is connected to the heating line 10 and between adjacent heating structures 20, and the second end of the return line 50 is connected to the heat exchange line 30 and downstream of the heat exchange structure 40.
When the flue gas waste heat utilization system of the embodiment is applied, when the power unit is fully loaded, water heated by the heat exchange structure 40 flows into the heating structure 20 through the return pipeline 50, and water flows into the water outlet 12 after being heated by the final-stage heating structure 20; when the load of the power unit is low, the water heated by the heat exchange structure 40 directly flows into the water outlet 12, and the final heating structure 20 is not needed to heat, so that the energy saving effect is in an optimal state.
Specifically, referring to fig. 1, four heating structures 20 are disposed at intervals.
Of course, in other alternative embodiments, the heating structure 20 may be provided in other numbers, such as five, six … …, etc.
Specifically, referring to fig. 1, the final heating structure 20 is a heating structure 20 behind the first end of the return line 50, i.e., the heating structure 20 at the leftmost side of the plane shown in the drawing.
In this embodiment, as shown in fig. 1, the heat exchange tube 30 includes a first branch 31 and a second branch 32, the second end of the return tube 50 communicates with both the second end of the first branch 31 and the first end of the second branch 32, the first end of the first branch 31 communicates with the first end of the heating tube 10, the second end of the second branch 32 communicates with the second end of the heating tube 10, and the heat exchange structure 40 is disposed on the first branch 31.
Specifically, the water flows into the first branch 31 from the water inlet 11, flows into the return line 50 or the second branch 32 after being heated by the heat exchange structure 40 according to the load condition of the power unit, and finally flows into the water outlet 12.
In this embodiment, as shown in fig. 1, the flue gas waste heat utilization system further includes a control valve group 60, where the control valve group 60 is disposed corresponding to the second branch 32 and the return line 50, so that the heat exchange structure 40 selectively communicates with the second branch 32 or the return line 50.
Specifically, when the power unit is fully loaded, the control valve group 60 controls the heat exchange structure 40 to be communicated with the return pipeline 50; when the power unit load is low, the control valve group 60 controls the heat exchange structure 40 to communicate with the second branch 32.
It should be noted that, by providing the control valve group 60, the communication direction of the heat exchange structure 40 may be selected according to the load condition of the power unit.
In the present embodiment, as shown in fig. 1, the control valve group 60 includes a first control valve 61 and a second control valve 62, the first control valve 61 is provided on the return line 50, and the second control valve 62 is provided on the second branch line 32.
Specifically, when the power unit is fully loaded, the first control valve 61 is opened, the second control valve 62 is closed, and the heat exchange structure 40 is communicated with the return pipeline 50; when the power unit load is low, the second control valve 62 is open, the first control valve 61 is closed, and the heat exchange structure 40 communicates with the second branch 32.
In this embodiment, as shown in fig. 1, the heating pipeline 10 includes a first main pipeline 13, a third branch pipeline 14 and a second main pipeline 15, a first end of the first main pipeline 13 is communicated with the water inlet 11, a second end of the first main pipeline 13 is simultaneously communicated with a first end of the heat exchange pipeline 30 and a first end of the third branch pipeline 14, a second end of the second main pipeline 15 is communicated with the water outlet 12, a first end of the second main pipeline 15 is simultaneously communicated with a second end of the heat exchange pipeline 30 and a second end of the third branch pipeline 14, and the heating structure 20 is arranged on the third branch pipeline 14.
Specifically, water flows into the first main path 13 from the water inlet 11, then flows into the third branch path 14 and the heat exchange pipeline 30 from the first main path 13, and when the power unit is fully loaded, the water in the heat exchange pipeline 30 flows into the third branch path 14 and flows into the second main path 15 together with the water in the third branch path 14, and finally flows into the water outlet 12; when the load of the power unit is low, the water of the heat exchange pipeline 30 flows into the second main pipeline 15 together with the water of the third branch pipeline 14, and finally flows into the water outlet 12.
In this embodiment, as shown in fig. 1, the third branch 14 includes a first section 141 and a second section 142, the first section 141 is communicated with the second section 142, the first end of the return line 50 is simultaneously communicated with the first section 141 and the second section 142, the plurality of heating structures 20 includes a first heating structure 21 and a second heating structure 22, the first heating structure 21 is disposed on the first section 141, and the second heating structure 22 is disposed on the second section 142.
In the present embodiment, as shown in fig. 1, the first heating structures 21 are provided in a plurality at intervals, and the second heating structures 22 are provided in one.
Specifically, the first heating structure 21 is provided with three.
It should be noted that, the adjacent first heating structures 21 are sequentially communicated to form gradient heating, so that the heating time is shortened, and the heating efficiency is improved.
Of course, in other alternative embodiments, the first heating structure 21 may be provided in other numbers, such as four, five … …, etc.
Specifically, the second heating structure 22 serves as the last stage heating structure 20 described above.
In this embodiment, the heat exchange structure 40 is a low-temperature economizer.
With the flue gas waste heat utilization system of the embodiment, water flows into the first main path 13 from the water inlet 11, then flows into the first path section 141 and the first branch path 31 from the first main path 13 respectively, the water positioned in the first path section 141 flows into the second path section 142 after being subjected to gradient heating by the three first heating structures 21, when the power unit is fully loaded, the first control valve 61 is opened, the second control valve 62 is closed, the water positioned in the first branch path 31 flows into the return pipeline 50 after being heated by the heat exchange structure 40, then flows into the second path section 142 and the water of the first path section 141 are combined, and the combined water flows into the second main path 15 after being heated by the second heating structures 22 and finally flows into the water outlet 12; when the load of the power unit is low, the second control valve 62 is opened, the first control valve 61 is closed, water in the first branch 31 flows into the second branch 32 after being heated by the heat exchange structure 40 and then flows into the second main path 15, water in the first path section 141 flows into the second path section 142 and then flows into the second main path 15 and then flows into the second branch 32, and the water after being converged flows into the water outlet 12 after being heated by the second heating structure 22.
The embodiment also provides a specific implementation mode of the energy supply system, which comprises the flue gas waste heat utilization system.
In this embodiment, the energy supply system further includes a power unit, and the power unit is communicated with the flue gas waste heat utilization system.
Specifically, the power unit generates electricity through combustion, the flue gas generated by the combustion is introduced into the heat exchange structure 40 in the flue gas waste heat utilization system, and the water is heated through the heat of the flue gas, so that the energy-saving purpose is achieved.
According to the above description, the present patent application has the following advantages:
1. when the power unit is fully loaded, the water heated by the heat exchange structure flows into the heating structure through the return pipeline, and the water flows into the water outlet after being heated by the final heating structure; when the load of the power unit is lower, the water heated by the heat exchange structure directly flows into the water outlet, and the final heating structure is not needed to heat, so that the energy saving effect is in an optimal state.
2. Through setting up the control valves, can select the intercommunication direction of heat transfer structure according to the power unit load.
3. Adjacent first heating structures are sequentially communicated to form gradient heating, so that the heating time is shortened, and the heating efficiency is improved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. A flue gas waste heat utilization system, comprising:
a heating pipeline (10) provided with a water inlet (11) and a water outlet (12);
the heating structures (20) are arranged on the heating pipeline (10) and are arranged in a plurality of at intervals;
the heat exchange pipeline (30) is arranged in parallel with the heating pipeline (10);
the heat exchange structure (40) is arranged on the heat exchange pipeline (30);
and a return line (50), wherein a first end of the return line (50) is connected with the heating line (10) and between adjacent heating structures (20), and a second end of the return line (50) is connected with the heat exchange line (30) and is connected downstream of the heat exchange structures (40).
2. The flue gas waste heat utilization system according to claim 1, wherein the heat exchange pipeline (30) comprises a first branch (31) and a second branch (32), the second end of the return pipeline (50) is simultaneously communicated with the second end of the first branch (31) and the first end of the second branch (32), the first end of the first branch (31) is communicated with the first end of the heating pipeline (10), the second end of the second branch (32) is communicated with the second end of the heating pipeline (10), and the heat exchange structure (40) is arranged on the first branch (31).
3. The flue gas waste heat utilization system according to claim 2, further comprising a control valve group (60), the control valve group (60) being arranged in correspondence of the second branch (32) and the return line (50) such that the heat exchanging structure (40) is selectively in communication with either the second branch (32) or the return line (50).
4. A flue gas waste heat utilization system according to claim 3, wherein the control valve block (60) comprises a first control valve (61) and a second control valve (62), the first control valve (61) being arranged on the return line (50), the second control valve (62) being arranged on the second branch (32).
5. The flue gas waste heat utilization system according to any one of claims 1-4, wherein the heating circuit (10) comprises a first main circuit (13), a third branch circuit (14) and a second main circuit (15), the first end of the first main circuit (13) is communicated with the water inlet (11), the second end of the first main circuit (13) is simultaneously communicated with the first end of the heat exchange circuit (30) and the first end of the third branch circuit (14), the second end of the second main circuit (15) is communicated with the water outlet (12), the first end of the second main circuit (15) is simultaneously communicated with the second end of the heat exchange circuit (30) and the second end of the third branch circuit (14), and the heating structure (20) is arranged on the third branch circuit (14).
6. The flue gas waste heat utilization system according to claim 5, wherein the third branch (14) comprises a first road section (141) and a second road section (142), the first road section (141) is communicated with the second road section (142), the first end of the return line (50) is simultaneously communicated with the first road section (141) and the second road section (142), a plurality of heating structures (20) comprise a first heating structure (21) and a second heating structure (22), the first heating structure (21) is arranged on the first road section (141), and the second heating structure (22) is arranged on the second road section (142).
7. The flue gas waste heat utilization system according to claim 6, wherein a plurality of first heating structures (21) are arranged at intervals, and one second heating structure (22) is arranged.
8. A flue gas waste heat utilization system according to any one of claims 1-4, wherein the heat exchanging structure (40) is a low-temperature economizer.
9. An energy supply system comprising the flue gas waste heat utilization system according to any one of claims 1 to 8.
10. The energy supply system of claim 9, further comprising a power unit in communication with the flue gas waste heat utilization system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321768234.1U CN220380349U (en) | 2023-07-06 | 2023-07-06 | Flue gas waste heat utilization system and energy supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321768234.1U CN220380349U (en) | 2023-07-06 | 2023-07-06 | Flue gas waste heat utilization system and energy supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220380349U true CN220380349U (en) | 2024-01-23 |
Family
ID=89572470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321768234.1U Active CN220380349U (en) | 2023-07-06 | 2023-07-06 | Flue gas waste heat utilization system and energy supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220380349U (en) |
-
2023
- 2023-07-06 CN CN202321768234.1U patent/CN220380349U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201269571Y (en) | Heat supply system of multifunctional distributed variable-frequency two-stage pump | |
| CN220380349U (en) | Flue gas waste heat utilization system and energy supply system | |
| CN210040419U (en) | Pile pipeline system for high-power fuel cell | |
| CN210320252U (en) | Heat allocation heating system between high-temperature pipe network and low-temperature pipe network | |
| CN114754401B (en) | Cogeneration system and method for configuring absorption heat pump and steam ejector | |
| CN107387259B (en) | Heating system, refrigerating system and combined cooling heating and power system | |
| CN113970270B (en) | Combined device of multiple regenerative heat exchangers and operation control method | |
| CN115507405A (en) | Regional energy system and operation mode | |
| CN212204711U (en) | Heat supply system for improving total heat supply capacity of heat source | |
| CN213207819U (en) | Complementary energy recovery system for cogeneration cascade heat supply | |
| CN203083141U (en) | Shell-side serial type gas-water exchanger set | |
| CN219530811U (en) | Energy storage and heat supply device | |
| CN217715450U (en) | Waste water source heat pump water heater system with two waste heat utilization modes | |
| CN218915072U (en) | Heat supply system of heat exchange station | |
| CN213778232U (en) | Cold and hot confession regulation and control system of set type | |
| CN209877065U (en) | Novel heating system | |
| CN109945272A (en) | A kind of three area's combining heating system of the big temperature difference based on absorption heat exchange | |
| CN218379563U (en) | Large-temperature-difference heat exchange unit and heat exchange system | |
| CN218410045U (en) | Absorption heat exchanger unit of many heat supply subregion | |
| CN219607192U (en) | Novel medium-deep geothermal gradient utilization system | |
| CN216667786U (en) | Heat supply terminal concurrent heating system | |
| CN214841078U (en) | Box type heat exchange unit utilizing backwater to supplement heat | |
| CN216928637U (en) | Integrated heat exchanger for fuel cell | |
| CN215216402U (en) | AC tank for directly connecting heat supply unit | |
| CN217482835U (en) | Central heating and heat storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |