LU504506B1 - An energy saving system for thermal power plants - Google Patents
An energy saving system for thermal power plants Download PDFInfo
- Publication number
- LU504506B1 LU504506B1 LU504506A LU504506A LU504506B1 LU 504506 B1 LU504506 B1 LU 504506B1 LU 504506 A LU504506 A LU 504506A LU 504506 A LU504506 A LU 504506A LU 504506 B1 LU504506 B1 LU 504506B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- heat exchange
- exchange structure
- line
- heat
- flue gas
- Prior art date
Links
- 239000002918 waste heat Substances 0.000 claims abstract description 62
- 238000011084 recovery Methods 0.000 claims abstract description 52
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000003546 flue gas Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003245 coal Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 18
- 239000000446 fuel Substances 0.000 claims description 9
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010795 Steam Flooding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/34—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines and returning condensate to boiler with main feed supply
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The invention discloses an energy saving system for thermal power plants, comprising: a boiler unit, a turbine generator unit, a flue gas utilisation unit and a coal mill unit; waste heat recovery line one is connected to heat exchange structure two for heating the medium in the make-up water line; the application provides a multi-purpose planning of the high temperature flue gas and high temperature steam generated by the boiler after power generation The application is a multi-purpose plan for the high-temperature flue gas and high-temperature steam generated by the boiler after power generation, which ensures the diversification of waste heat utilisation and realises the multi-level use of waste heat and enhances the adequacy of heat exchange.
Description
An energy saving system for thermal power plants 0504506
The present invention belongs to the field of thermal power generation and relates in particular to an energy saving system for thermal power plants.
Background technology
A thermal power plant, or thermal power plant for short, is a plant that produces electrical energy using combustible materials (e.g. coal) as fuel. The basic production process is that the fuel is burned to heat water to produce steam, which converts the chemical energy of the fuel into heat, and the steam pressure drives the turbine, which converts the heat into mechanical energy, and then the turbine drives the generator, which converts the mechanical energy into electrical energy.
In traditional thermal power plants, the flue gas produced by burning coal in the boiler 1s generally used to heat water for domestic use; the use of waste heat is single, and the utilisation rate is not high, there is a low utilisation rate of waste heat, which in turn leads to a waste of energy, which 1s not conducive to the development of energy saving and emission reduction policies.
Content of the invention
The purpose of the present invention is to provide an energy saving system for thermal power plants that solves at least one of the problems raised by the above-mentioned background technology.
In order to solve the above technical problems, specific technical solutions of the present invention are as follows:
In some embodiments of the present application, there 1s provided an energy saving system for thermal power plants, comprising a boiler unit for providing thermal energy to a thermal power plant; said boiler unit is provided with a high temperature steam output line and a high temperature flue gas output line a turbine generator set, connected to said high temperature steam output line for generating electricity powered by high temperature steam, said boiler unit having a heat exchange structure
I and a heat exchange structure II provided externally to the make-up water line of said boiler unit, said turbine generator set being connected to said heat exchange structure I, the high temperature steam output thereof being heat exchanged within said heat exchange structure I and 504506 then entering the water treatment plant via a condenser flue gas utilization device, connected to said high temperature flue gas output line; said flue gas utilization device is provided with waste heat recovery line one and waste heat recovery line two, said waste heat recovery line one is connected to said heat exchange structure two for heating the medium in said charge water line a coal mill unit, connected to said boiler unit, for supplying fuel to said boiler unit; said waste heat recovery line II is connected to the inlet of said coal mill unit for drying pulverized coal.
In the above preferred option for energy saving systems for thermal power plants, said flue gas utilization unit is further provided with waste heat recovery line three;
Said heat exchange structure III is provided in the air supply line of said boiler unit, and said waste heat recovery line III is connected to said heat exchange structure III for heating the gas in said air supply line of said boiler unit.
In the above-mentioned preferred solution for energy saving systems for thermal power plants, said charge pipe circuit is externally provided with heat exchange structure IV, said charge pipe circuit is divided into a primary heat section, a medium heat section and a high heat section; said heat exchange structure IV is provided in said primary heat section, said heat exchange structure I and heat exchange structure II are provided in the medium heat section and high heat section respectively;
The outlet ends of said heat exchanger structure II and said heat exchanger structure III are connected to said heat exchanger structure IV respectively.
In the above preferred option for energy saving systems for thermal power plants, said heat exchange structure two is provided with a temperature detection component one at its outlet end and with a waste heat secondary recovery line one and a chimney exhaust line one connected to said heat exchange structure three and a chimney passage respectively; said waste heat secondary recovery line one and said chimney exhaust line one are provided with a switching valve one and a switching valve two at their inlet ends respectively;
When said temperature detecting component one detects that the medium temperature in said heat exchange structure two does not meet the preset standard, said switching valve two is controlled to open and the heat exchanged flue gas is discharged through the chimney; when the 504506 medium temperature in said heat exchange structure one is within the preset standard, said switching valve one is controlled to open and the flue gas enters said heat exchange structure four through said waste heat secondary recovery line one to preheat the medium in said charge pipe line. The medium in said charge pipe is preheated.
In the above-mentioned preferred solution of the energy saving system for thermal power plants, the outlet end of said heat exchange structure III is provided with a temperature detection component II, and a waste heat secondary recovery line II and a chimney exhaust line II are provided to connect said heat exchange structure III and the chimney passage respectively, and the inlet end of said waste heat secondary recovery line II and said chimney exhaust line II are provided with a switching valve III and a switching valve IV;
When said temperature detection component II detects that the medium temperature in said heat exchange structure III does not meet the preset standard, said switch valve IV is controlled to open and the heat exchanged flue gas is discharged through the chimney, when the medium temperature in said heat exchange structure II is within the preset standard, said switch valve III is controlled to open and the flue gas enters said heat exchange structure IV through said waste heat secondary recovery line II to preheat the medium in said charge pipe line. The medium is preheated.
In the above-mentioned preferred option of the energy saving system for thermal power plants, said heat exchange structure I, said heat exchange structure IL, said heat exchange structure III and said heat exchange structure IV are all cylindrical shell structures with spiral-shaped heat exchange pipes inside; said heat exchange structure I, said heat exchange structure II and said heat exchange structure IV are set on the outside of said charge pipe line, said heat exchange structure III is set on the outside of said air supply line. outside.
As can be seen from the above technical solutions, compared with the prior art, the beneficial effect of the present invention is that (a) The present application provides multi-purpose planning for the high-temperature flue gas and high-temperature steam generated by the boiler after power generation, enriching the waste heat recovery scheme, thereby ensuring the diversification of waste heat utilization, enhancing the utilization rate of waste heat, which is more in line with the policy of energy conservation and emission reduction, and is also more environmentally friendly; 7504506
This solution realises the multi-level use of waste heat, enhances the adequacy of heat exchange, further improves the utilisation rate of waste heat and helps to reduce the cost of power generation.
Description of the accompanying drawings
In order to illustrate more clearly the technical solutions in the embodiments or prior art of the present invention, the following is a brief description of the accompanying drawings which are required for the description of the embodiments or prior art. It is obvious that the accompanying drawings in the following description are only examples of embodiments of the present invention and that other accompanying drawings may be obtained by a person of ordinary skill in the art without creative labour in accordance with the accompanying drawings provided.
Figure 1 shows a schematic diagram of an embodiment of the present invention.
In the figures:
Boiler unit; 10, high temperature steam output line; 11, high temperature flue gas output line; 12, make-up water line; 120, heat exchange structure I; 121, heat exchange structure II; 122, heat exchange structure IV; 123, chimney exhaust line I; 124, chimney exhaust line II; 13, air supply line; 130, heat exchange structure III; 2, turbine generator unit; 3, flue gas utilization unit; 30, waste heat recovery line I; 31, waste heat recovery line II; 32, waste heat recovery line III; 33, waste heat secondary recovery line I; 34, waste heat secondary recovery line II; 4, coal mill set; 5, supply fan; 6, water treatment equipment; 70, temperature detection component I; 71, temperature detection component II; 80, switching valve I; 81, switching valve II; 82, switching valve III; 83, Switching valve IV; 9, condenser.
Specific embodiments
Specific embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "centre", "top", "bottom", "front" , "back", "left", "right", "vertical", "horizontal ", "top", "bottom", "inside", "outside", etc. orientation or positional relationships are based on those shown in the accompanying drawings and are intended only to facilitate and simplify the description of the 504506 present application, not to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore are not to be construed as limiting the present application. 5 In the description of this application, it is to be noted that, unless otherwise expressly specified and limited, the terms "mounted", "connected", "connected" are to be understood in a broad sense and may, for example, be fixed connection, removable connection, or integral connection, mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium, or internal connection of two components. For a person of ordinary skill in the art, the specific meaning of the above terms in the context of the present application can be understood in specific cases.
In order to better understand the purpose, structure and function of the present invention, the invention is described in further detail below in conjunction with the accompanying drawings.
Referring to Figure 1, there is described an energy saving system for thermal power plants comprising: a boiler unit 1, a turbine generator unit 2, a flue gas utilization unit 3 and a coal mill unit 4; wherein
The boiler unit 1 is used to provide thermal energy to the thermal power plant; the boiler unit 1 is provided with a high temperature steam output line 10 and a high temperature flue gas output line 11; the turbine generator set 2 is connected to the high temperature steam output line 10 and generates electricity by using the high temperature steam as the power source, and a heat exchange structure I 120 and a heat exchange structure II 121 are provided on the outside of the make-up water line 12 of the boiler unit 1, and the high temperature steam discharged from the turbine generator set 2 is discharged in the heat exchange structure I 120. The high-temperature steam discharged from turbine generator set 2 is heat exchanged in heat exchange structure 1120 and then enters water treatment equipment 6 via condenser 9; flue gas utilization device 3 is connected to high-temperature flue gas output pipeline 11; flue gas utilization device 3 is provided with waste heat recovery pipeline 130 and waste heat recovery pipeline 231; waste heat recovery pipeline 130 is connected to heat exchange structure 2121 for heating the medium in make-up water pipeline 12; coal mill set 4 is connected to boiler unit 1 for heating the medium in boiler unit 1; coal mill set 4 is connected to boiler unit 1 for heating the medium in boiler unit 17904506
Unit 4 is connected to boiler unit 1 for supplying fuel to boiler unit 1; waste heat recovery line II 31 is connected to the inlet of coal mill unit 4 for drying coal powder.
It should be noted that boiler device 1, turbine generator set 2, flue gas utilization device 3 and coal mill set 4 are all existing technologies, and the basic working principle is: boiler device 1 has water replenishment pipeline 12, air supply pipeline 13, high temperature steam output pipeline 10 and high temperature flue gas output pipeline 11, coal mill set 4 delivers fuel coal powder for boiler device 1; fan 5 delivers air for boiler device 1 through air supply pipeline 13; coal powder is burned in boiler device 1, heating medium water to produce high temperature steam and high temperature flue gas; the chemical energy of fuel is converted into heat energy, and high temperature steam drives turbine generator set 2 to work, and mechanical energy is generated. After the pulverized coal is burned in the boiler unit 1, the medium water is heated to produce high-temperature steam and high-temperature flue gas; the chemical energy of the fuel is converted into heat energy, and the high-temperature steam drives the turbine generator set 2 to work, converting mechanical energy into electrical energy; in the process of power generation, treated water needs to be injected into the boiler unit 1 through the water treatment equipment 6 through the water replenishment pipeline 12.
In the preferred solution of the above embodiment, the flue gas utilization device 3 is also provided with waste heat recovery pipeline III 32; the
The air supply line 13 of the boiler device 1 is provided with a heat exchange structure III 130, and the waste heat recovery line III 32 is connected to the heat exchange structure III 130 for heating the gas in the air supply line 13. It is in line with the policy of energy saving and emission reduction, and is more environmentally friendly.
It is to be noted that the flue gas utilization device 3 is a shell structure, which is provided with a piping group inside; wherein the inlet piping is connected to the high temperature flue gas output piping 11 of the boiler unit, and its outlets are respectively waste heat recovery piping I 30, waste heat recovery piping II 31 He waste heat recovery piping III 32.
In the preferred solution of the above embodiment, the make-up water pipeline 12 is externally provided with a heat exchange structure IV 122, and the make-up water pipeline 12 is divided into a primary heat section, a medium heat section and a high heat section; the heat exchange structure IV 122 is provided in the primary heat section, and the heat exchange 504506 structure I 120 and the heat exchange structure II 121 are provided in the medium heat section and the high heat section respectively;
The outlet ends of heat exchanger structure II 121 and heat exchanger structure III 130 are connected to heat exchanger structure IV 122 respectively.
In the preferred embodiment of the above embodiment, the outlet end of the heat exchange structure II 121 is provided with a temperature detection component I 70 and a waste heat secondary recovery pipeline I 33 and a chimney exhaust pipeline I 123, which are connected to the heat exchange structure III 130 and the chimney passage respectively; the inlet ends of the waste heat secondary recovery pipeline I 33 and the chimney exhaust pipeline I 123 are provided with a switching valve I 80 and a switching valve II 81 respectively;
When the temperature detection component 170 detects that the medium temperature in the heat exchange structure II121 does not meet the preset standard, the switching valve 1181 is controlled to open and the heat exchanged flue gas is discharged through the chimney; when the medium temperature in the heat exchange structure 1120 is within the preset standard, the switching valve I80 is controlled to open and the flue gas enters the heat exchange structure
IV122 via the waste heat secondary recovery pipeline 133 to preheat the medium in the make-up water pipeline 12 After preheating the medium in the make-up water line 12, it is discharged through the chimney 125.
In order to further optimize the above technical solution, the outlet end of the heat exchange structure III130 is provided with a temperature detection component 1171, and a waste heat secondary recovery pipeline [134 and a chimney exhaust pipeline 11124 are provided to connect the heat exchange structure III130 and the chimney channel respectively, and the inlet end of the waste heat secondary recovery pipeline 1134 and the chimney exhaust pipeline 11124 are provided with a switching valve IIIS2 and a switching valve IV83; when the temperature detection component 1171 detects that the medium temperature in the heat exchange structure III130 does not meet the preset standard, the switching valve IV83 is controlled to open;
When the temperature detection component 1171 detects that the medium temperature in the heat exchange structure III130 does not meet the preset standard, the switching valve IV83 is controlled to open and the heat exchanged flue gas is discharged through the chimney; when the medium temperature in the heat exchange structure I[121 is within the preset standard, the 504506 switching valve III82 is controlled to open and the flue gas enters the heat exchange structure
IV122 through the waste heat secondary recovery pipeline II34 and preheats the medium in the make-up water pipeline 12. After preheating the medium inside the make-up water line 12, it is discharged through the chimney 125; this solution realizes the multi-level use of waste heat, further enhances the adequacy of heat exchange, further enhances the utilization rate of waste heat, and helps to reduce the cost of power generation.
It is to be noted that detection component one and detection component two are both prior art and may preferably be temperature sensors; switching valve one 80, switching valve two 81, switching valve three 82 and switching valve four 83 are all prior art and may preferably be solenoid valves, wherein switching valve one 80, switching valve two 81, switching valve three 82 and switching valve four 83 are controlled via a controller, which is a programmable The controller receives the information from the detection component one and the detection component two, makes a judgment and then controls the action of the switching valve one 80, the switching valve two 81, the switching valve three 82 and the switching valve four 83 according to the judgment result.
In the preferred solution of the above embodiment, the heat exchange structure I 120, the heat exchange structure II 121, the heat exchange structure III 130 and the heat exchange structure IV 122 are all barrel-shaped shell structures with spiral-shaped heat exchange pipes inside; the heat exchange structure I 120, the heat exchange structure II 121 and the heat exchange structure IV 122 are set on the outside of the make-up water pipeline 12, and the heat exchange structure III 130 is set on the outside of the air supply pipeline 13.
In the preferred embodiment of the above embodiment, the heat exchange structure I 120, the heat exchange structure II 121, the heat exchange structure III 130, the heat exchange structure IV 122, the air supply line 13, the make-up water line 12, the waste heat recovery line I and the waste heat recovery line II 31 are provided with an insulation layer on the outside.
In the preferred embodiment of the above embodiment, the chimney passage is provided with a flue gas treatment device.
The individual embodiments are described in this specification in a progressive manner, 30 with each embodiment focusing on the differences from the other embodiments, and the same similar parts between the various embodiments can be referred to each other. For the device 904506 disclosed in the embodiments, the description is simpler as it corresponds to the method disclosed in the embodiments, and the relevant parts can be described in the method section.
The above description of the disclosed embodiments enables the person skilled in the art to implement or use the invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the invention. Accordingly, the invention will not be limited to these embodiments shown herein, but will be subject to the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An energy saving system for thermal power plants, characterized in that it comprises: a boiler unit for providing thermal energy to the thermal power plant; said boiler unit is provided with a high temperature steam output line and a high temperature flue gas output line; turbine generator set, connected to said high temperature steam output line for generating electricity powered by high temperature steam, said boiler unit having a heat exchange structure I and a heat exchange structure II provided on the outside of the make-up water line, said turbine generator set being connected to said heat exchange structure I, the high temperature steam output thereof being heat exchanged in said heat exchange structure I and then entering the water treatment plant via the condenser; flue gas utilization device, connected to said high temperature flue gas output line; said flue gas utilization device is provided with waste heat recovery line one and waste heat recovery line two; said waste heat recovery line one is connected to said heat exchange structure two for heating the medium in said charge water line; a coal mill unit, connected to said boiler unit, for supplying fuel to said boiler unit; said waste heat recovery line two is connected to the inlet of said coal mill unit for drying pulverized coal.
2. An energy saving system for thermal power plants according to claim 1, characterized in that said flue gas utilization device is further provided with waste heat recovery line III; Said boiler unit is provided with a heat exchange structure III on the air supply line of said boiler unit, said waste heat recovery line III being connected to said heat exchange structure III for heating the gas in said air supply line of said boiler unit.
3. An energy saving system for thermal power plants according to claim 2, characterized in that said charge pipe line is provided with a heat exchange structure IV outside, said charge pipe line being divided into a primary heat section, a medium heat section and a high heat section; said heat exchange structure IV is provided in said primary heat section, said heat exchange structure I and heat exchange structure II are provided in medium-heat and high-heat sections respectively; The outlet ends of said heat exchanger structure II and said heat exchanger structure III are connected to said heat exchanger structure IV respectively. 0506506
4. An energy saving system for thermal power plants according to claim 3, characterized in that the outlet end of said heat exchanger structure II is provided with a temperature detection component I, and a waste heat secondary recovery line I and a chimney exhaust line I are provided to connect said heat exchanger structure III and the chimney passage, respectively; said waste heat secondary recovery line I and the inlet end of said chimney exhaust line I are provided with a switching valve I and a switching valve II, respectively I and said chimney exhaust line I are provided with a switching valve I and a switching valve II respectively at the inlet end of said chimney exhaust line I; When said temperature detection component one detects that the medium temperature in said heat exchange structure two does not meet the preset standard, it controls said switch valve two to open and the heat exchanged flue gas is discharged through the chimney; when the medium temperature in said heat exchange structure one is within the preset standard, it controls said switch valve one to open and the flue gas enters said heat exchange structure four through said waste heat secondary recovery line one to preheat the medium in said charge pipe line. The medium in said charge line is preheated.
5. An energy saving system for thermal power plants according to claim 4, characterized in that the outlet end of said heat exchanger structure III is provided with a temperature detection component II, and a waste heat secondary recovery line II and a chimney exhaust line II are provided to connect said heat exchanger structure III and the chimney channel respectively, said waste heat secondary recovery line II and said chimney exhaust line II line two and said chimney exhaust line two are each provided with a switching valve three and a switching valve four at the inlet end of said chimney exhaust line two; When said temperature detection component II detects that the medium temperature in said heat exchange structure III does not meet the preset standard, said switch valve IV is controlled to open and the heat exchanged flue gas is discharged through the chimney, when the medium temperature in said heat exchange structure II is within the preset standard, said switch valve III is controlled to open and the flue gas enters said heat exchange structure IV through said waste heat secondary recovery line II to preheat the medium in said charge pipe line. The medium in said charge pipe 1s preheated.
6. An energy saving system for thermal power plants according to claim 5, characterized bY 504506 that said heat exchange structure one, said heat exchange structure two, said heat exchange structure three and said heat exchange structure four are all of a cylindrical housing structure with spiral-shaped heat exchange ducts inside; said heat exchange structure one, said heat exchange structure said heat exchange structure I, said heat exchange structure II and said heat exchange structure IV are located on the outside of said charge line and said heat exchange structure III is located on the outside of said air supply line.
7. An energy saving system for thermal power plants according to claim 6, characterized in that said heat exchange structure I, said heat exchange structure II, said heat exchange structure III, said heat exchange structure IV, said air supply line, said charge line, said waste heat recovery line I and said waste heat recovery line II are provided with an insulation layer on the outside of said air supply line, said charge line, said waste heat recovery line I and said waste heat recovery line II. The insulation layer is provided.
8. An energy saving system for thermal power plants according to claim 7, characterized in that said chimney passage is provided with a flue gas treatment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU504506A LU504506B1 (en) | 2023-06-15 | 2023-06-15 | An energy saving system for thermal power plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU504506A LU504506B1 (en) | 2023-06-15 | 2023-06-15 | An energy saving system for thermal power plants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU504506B1 true LU504506B1 (en) | 2023-12-18 |
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ID=89384456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU504506A LU504506B1 (en) | 2023-06-15 | 2023-06-15 | An energy saving system for thermal power plants |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU504506B1 (en) |
-
2023
- 2023-06-15 LU LU504506A patent/LU504506B1/en active IP Right Grant
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Effective date: 20231218 |