CN219283380U - Waste heat recovery utilizes system in thermal power plant - Google Patents
Waste heat recovery utilizes system in thermal power plant Download PDFInfo
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- CN219283380U CN219283380U CN202223292669.1U CN202223292669U CN219283380U CN 219283380 U CN219283380 U CN 219283380U CN 202223292669 U CN202223292669 U CN 202223292669U CN 219283380 U CN219283380 U CN 219283380U
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- 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
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Abstract
The utility model discloses a waste heat recycling system of a thermal power plant, which belongs to the technical field of waste heat recycling, and comprises: the utility model discloses a flue gas exhaust pipe, which is used for conveying high-temperature flue gas generated by a thermal power plant, a dust remover, a high-temperature flue gas dedusting and desulfurizing tower, a high-temperature flue gas desulfurizing and heat exchanging mechanism, a fuel to be used is preheated by the high-temperature flue gas, one end of the flue gas exhaust pipe is connected with the air inlet end of the dust remover, the air outlet end of the dust remover is connected with the air inlet end of the desulfurizing tower through a first pipeline.
Description
Technical Field
The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery and utilization system of a thermal power plant.
Background
A thermal power plant is a plant for producing electric energy by using combustible materials (such as coal) as fuel, and the basic production process is as follows: the fuel heats water to generate steam when being combusted, chemical energy of the fuel is converted into heat energy, steam pressure pushes the steam turbine to rotate, the heat energy is converted into mechanical energy, then the steam turbine drives the generator to rotate, the mechanical energy is converted into electric energy, and a large amount of high-temperature smoke is generated in the combustion process of the fuel. However, most of the existing enterprises generally purify and cool high-temperature flue gas to a certain extent and then discharge the high-temperature flue gas into air, so that a great deal of heat energy is lost, and the efficiency of the boiler is reduced. Therefore, the utility model discloses a waste heat recycling system of a thermal power plant.
Disclosure of Invention
The present utility model has been made in view of the above and/or problems occurring in the prior art waste heat recovery and utilization system of a thermal power plant.
Therefore, the utility model aims to provide a waste heat recycling system of a thermal power plant, which can solve the problems existing in the prior art.
In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:
a waste heat recovery and utilization system of a thermal power plant comprises:
the smoke exhaust pipe is used for conveying high-temperature smoke generated by the thermal power plant;
the dust remover is used for removing dust from the high-temperature flue gas;
the desulfurizing tower is used for desulfurizing the high-temperature flue gas;
the heat exchange mechanism is used for preheating fuel to be used by utilizing high-temperature flue gas;
one end of the smoke exhaust pipe is connected with the air inlet end of the dust remover, the air outlet end of the dust remover is connected with the air inlet end of the desulfurizing tower through a first pipeline, the air outlet end of the desulfurizing tower is fixedly connected with a second pipeline, one end of the second pipeline is fixedly connected with two groups of third pipelines provided with electromagnetic valves on the second pipeline through a three-way joint, and one end of each group of third pipelines is connected with a group of heat exchange mechanisms.
As a preferable scheme of the waste heat recycling system of the thermal power plant, the utility model comprises the following steps: the heat exchange mechanism comprises:
a bracket;
the air inlet assembly is used for conveying high-temperature flue gas and is arranged on the bracket;
the heating component is used for preheating fuel by utilizing high-temperature flue gas conveyed by the air inlet component and is arranged on the bracket;
the conveying assembly is used for conveying the preheated flue gas and is arranged on the bracket;
and the driving assembly is used for rotating the heating assembly by utilizing the flue gas conveyed by the conveying assembly and is arranged on the bracket.
As a preferable scheme of the waste heat recycling system of the thermal power plant, the utility model comprises the following steps: the bracket comprises:
a bottom plate;
the side plate is fixedly arranged on one side of the top of the bottom plate.
As a preferable scheme of the waste heat recycling system of the thermal power plant, the utility model comprises the following steps: the air intake assembly includes:
the square block is fixedly arranged on the top of the bottom plate, and a third pipeline is fixedly arranged on the inner wall of one end of the square block;
the inner wall of the square block is provided with a circulation groove;
and the hard pipes are fixedly arranged on the inner walls of the top ends of the square blocks.
As a preferable scheme of the waste heat recycling system of the thermal power plant, the utility model comprises the following steps: the heating assembly includes:
the inner wall of the bottom end of the outer barrel is fixedly provided with a plurality of hard pipes, and the inner wall of the top end of the outer barrel is fixedly provided with an air inlet pipe;
the inner walls of the two ends of the outer cylinder are fixedly provided with supporting plates;
the inner wall of the supporting plate is rotationally connected with the inner cylinder through a bearing, a connecting plate is fixedly arranged on the inner wall of one end of the inner cylinder, and the inner wall of the other end of the inner cylinder is detachably connected with a cylinder cover;
the rotating shaft is rotationally connected to the side plate through a bearing, and one end of the rotating shaft is fixedly provided with a connecting plate.
As a preferable scheme of the waste heat recycling system of the thermal power plant, the utility model comprises the following steps: the delivery assembly includes:
the fixed plate is fixedly arranged on one side of the top end of the side plate;
the air pump is fixedly arranged on the top of the fixed plate;
the air inlet pipe is fixedly arranged at the input end of the air pump;
the air outlet pipe is fixedly arranged at the output end of the air pump.
As a preferable scheme of the waste heat recycling system of the thermal power plant, the utility model comprises the following steps: the drive assembly includes:
the sealing box is fixedly arranged on one side of the side plate, and the inner wall of the top end of the sealing box is fixedly provided with an air outlet pipe;
the rotating block is positioned in the inner cavity of the sealing box, and a rotating shaft is fixedly arranged on the inner wall of the rotating block;
the outer surface of the rotating block is fixedly provided with a plurality of rotating plates, and a group of rotating plates are positioned right below the air outlet pipe;
the air outlet hole is formed in the inner wall of the bottom end of the sealing box.
As a preferable scheme of the waste heat recycling system of the thermal power plant, the utility model comprises the following steps: the cylinder cover is as follows:
the inner wall of one end of the inner cylinder is fixedly provided with a plurality of supporting blocks;
the sealing plate is detachably connected to the supporting block through screws.
As a preferable scheme of the waste heat recycling system of the thermal power plant, the utility model comprises the following steps: the cylinder cover is as follows:
the connecting column is inserted into the inner wall of one end of the inner cylinder, and a sealing ring is arranged between the connecting column and the inner cylinder;
the baffle is fixedly arranged at one end of the connecting column;
the driving block is fixedly arranged on the baffle plate.
Compared with the prior art:
1. the heat exchange mechanism is arranged, so that the effect of preheating the fuel to be used by utilizing the high-temperature flue gas is realized, the fuel to be used is preheated by utilizing the high-temperature flue gas, the resource utilization is realized, the heat loss is avoided, the cost is saved, and meanwhile, the combustion time of the fuel to be used is shortened by preheating the fuel to be used;
2. the heating assembly rotates to roll the fuel in the inner cylinder, and the fuel uniformly heats the fuel to improve the preheating effect of the fuel;
3. the driving assembly is arranged, so that the effect of rotating the heating assembly by utilizing flowing smoke is realized, and the heating assembly is rotated by utilizing the flowing smoke, so that the investment of cost is reduced;
4. by arranging the conveying component, the preheated flue gas is prevented from staying between the outer cylinder and the inner cylinder, and the preheated flue gas is prevented from staying between the outer cylinder and the inner cylinder, so that heat of the high-temperature flue gas is prevented from being absorbed by the preheated flue gas, and heat loss is avoided;
5. through setting up two sets of heat transfer mechanism, have the effect that makes two sets of heat transfer mechanism carry out the work in turn, through making two sets of heat transfer mechanism carry out the work in turn, have to avoid appearing suspending the phenomenon of carrying high temperature flue gas.
Drawings
FIG. 1 is a schematic elevational view of the overall structure of the present utility model;
FIG. 2 is a schematic front view of a heat exchange mechanism according to embodiment 1 of the present utility model;
FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 according to the present utility model;
FIG. 4 is a schematic side view of a portion of the heating assembly of the present utility model;
FIG. 5 is a schematic side view of a drive assembly of the present utility model;
fig. 6 is a schematic front view of a heat exchange mechanism according to embodiment 2 of the present utility model.
In the figure: the flue gas exhaust pipe 10, the dust collector 20, the first pipe 30, the desulfurizing tower 40, the second pipe 50, the third pipe 60, the heat exchanging mechanism 70, the bracket 71, the bottom plate 711, the side plate 712, the gas inlet assembly 72, the block 721, the flow-through groove 722, the hard pipe 723, the heating assembly 73, the outer cylinder 731, the supporting plate 732, the inner cylinder 733, the rotating shaft 734, the cylinder cover 74, the sealing plate 741, the supporting block 742, the connecting column 746, the baffle 747, the driving block 748, the conveying assembly 75, the fixing plate 751, the air pump 752, the air inlet pipe 753, the air outlet pipe 754, the driving assembly 76, the sealing box 761, the rotating block 762, the rotating plate 763, and the air outlet hole 764.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
Example 1:
the utility model provides a waste heat recycling system of a thermal power plant, referring to fig. 1-5, comprising: the smoke exhaust pipe 10 is used for conveying high-temperature smoke generated by a thermal power plant, the dust remover 20 is used for removing dust from the high-temperature smoke, the desulfurizing tower 40 is used for desulfurizing the high-temperature smoke, the heat exchange mechanism 70 is used for preheating fuel to be used by using the high-temperature smoke;
one end of the smoke exhaust pipe 10 is connected with the air inlet end of the dust remover 20, the air outlet end of the dust remover 20 is connected with the air inlet end of the desulfurizing tower 40 through a first pipeline 30, the air outlet end of the desulfurizing tower 40 is fixedly connected with a second pipeline 50, one end of the second pipeline 50 is fixedly connected with two groups of third pipelines 60 provided with electromagnetic valves on the third pipelines through a three-way joint, and one end of each group of third pipelines 60 is connected with a group of heat exchange mechanisms 70;
working principle: the high-temperature flue gas generated by the thermal power plant flows into the dust remover 20 through the smoke exhaust pipe 10 to remove dust, the high-temperature flue gas after dust removal flows into the desulfurizing tower 40 through the first pipeline 30 to desulfurize, at the moment, only one group of electromagnetic valves is started, so that the high-temperature flue gas after desulfurization flows into the corresponding heat exchange mechanism 70 through the corresponding third pipeline 60.
The heat exchange mechanism 70 includes: the fuel preheating device comprises a bracket 71, an air inlet assembly 72 for conveying high-temperature flue gas, a heating assembly 73 for preheating fuel by the high-temperature flue gas conveyed by the air inlet assembly 72, a conveying assembly 75 for conveying the preheated flue gas, and a driving assembly 76 for rotating the heating assembly 73 by the flue gas conveyed by the conveying assembly 75;
and the air intake assembly 72 is mounted on the bracket 71, and the heating assembly 73 is mounted on the bracket 71, and the conveying assembly 75 is mounted on the bracket 71, and the driving assembly 76 is mounted on the bracket 71.
The bracket 71 includes: a bottom plate 711 and a side plate 712; a side plate 712 is fixedly installed at a top side of the bottom plate 711.
The intake assembly 72 includes: block 721, flow-through tank 722, hard tube 723;
a block 721 is fixedly installed on the top of the bottom plate 711, and a third pipe 60 is fixedly installed on the inner wall of one end of the block 721, a flow channel 722 is formed on the inner wall of the block 721, and a plurality of hard pipes 723 are fixedly installed on the inner wall of the top end of the block 721;
working principle: when the desulfurized high-temperature flue gas flows into the third duct 60, the flue gas flows into the space between the outer cylinder 731 and the inner cylinder 733 through the flow-through groove 722 and the hard tube 723.
The heating assembly 73 includes: an outer cylinder 731, a support plate 732, an inner cylinder 733 made of brass, and a rotating shaft 734;
a plurality of hard tubes 723 are fixedly arranged on the inner wall of the bottom end of the outer barrel 731, an air inlet pipe 753 is fixedly arranged on the inner wall of the top end of the outer barrel 731, supporting plates 732 are fixedly arranged on the inner walls of the two ends of the outer barrel 731, the inner walls of the supporting plates 732 are rotationally connected with an inner barrel 733 through bearings, a connecting plate is fixedly arranged on the inner wall of one end of the inner barrel 733, a barrel cover 74 is detachably connected with the inner wall of the other end of the inner barrel 733, a rotating shaft 734 is rotationally connected to a side plate 712 through bearings, and a connecting plate is fixedly arranged at one end of the rotating shaft 734;
working principle: when the high temperature flue gas flows into the space between the outer cylinder 731 and the inner cylinder 733, heat is transferred to the inner cylinder 733 to preheat the fuel in the inner cylinder 733.
The transport assembly 75 includes: a fixing plate 751, an air pump 752, an air inlet pipe 753 and an air outlet pipe 754;
the fixing plate 751 is fixedly installed on one side of the top end of the side plate 712, the air pump 752 is fixedly installed on the top of the fixing plate 751, the air inlet pipe 753 is fixedly installed at the input end of the air pump 752, and the air outlet pipe 754 is fixedly installed at the output end of the air pump 752;
working principle: when the fuel in the inner tube 733 is preheated, the air pump 752 is started, and after the start, the preheated flue gas flows into the sealing box 761 through the air inlet tube 753 and the air outlet tube 754.
The drive assembly 76 includes: the device comprises a sealing box 761, a rotating block 762 positioned in the inner cavity of the sealing box 761, a rotating plate 763 and an air outlet 764;
the sealing box 761 is fixedly arranged on one side of the side plate 712, the air outlet pipe 754 is fixedly arranged on the inner wall of the top end of the sealing box 761, the rotating shaft 734 is fixedly arranged on the inner wall of the rotating block 762, the plurality of rotating plates 763 are fixedly arranged on the outer surface of the rotating block 762, the group of rotating plates 763 are positioned under the air outlet pipe 754, and the air outlet hole 764 is formed on the inner wall of the bottom end of the sealing box 761;
working principle: when the preheated flue gas flows into the sealing box 761, the group of rotating plates 763 are impacted, the impacted rotating plates 763 rotate to enable the rotating block 762 to drive the rotating shaft 734 to rotate, when the rotating shaft 734 rotates, the inner cylinder 733 rotates to enable materials in the inner cylinder 733 to tumble, so that fuel is heated uniformly, and when the flue gas flows into the sealing box 761, the flue gas flows out through the air outlet 764.
The cylinder cover 74 is: a support block 742 and a sealing plate 741;
a plurality of supporting blocks 742 are fixedly arranged on the inner wall of one end of the inner barrel 733, and a sealing plate 741 is detachably connected to the supporting blocks 742 through screws;
working principle: after the fuel in the inner cylinder 733 is preheated, one group of electromagnetic valves is closed, the other group of electromagnetic valves is started to enable high-temperature flue gas to flow into the other group of heat exchange mechanisms 70, at the moment, screws are detached, a sealing plate 741 is taken away, after that, the preheated fuel is taken out of the inner cylinder 733 and conveyed to a thermal power plant for use, and after the preheated fuel is taken out, new fuel to be used is put into the inner cylinder 733.
Example 2:
the utility model provides a waste heat recycling system of a thermal power plant, referring to fig. 6, a cylinder cover 74 is as follows: a connecting column 746, a baffle 747, a drive block 748;
the connecting column 746 is inserted on the inner wall of one end of the inner cylinder 733, a sealing ring is arranged between the connecting column 746 and the inner cylinder 733, a baffle 747 is fixedly arranged at one end of the connecting column 746, and a driving block 748 is fixedly arranged on the baffle 747;
working principle: after the fuel in the inner cylinder 733 is preheated, one electromagnetic valve is closed, the other electromagnetic valve is started to enable high-temperature flue gas to flow into the other heat exchange mechanism 70, at the moment, the connecting column 746 is detached through the driving block 748, after that, the preheated fuel is taken out from the inner cylinder 733 and conveyed to a thermal power plant for use, and after the preheated fuel is taken out, new fuel to be used is filled into the inner cylinder 733.
Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. Waste heat recovery utilizes system in thermal power plant, its characterized in that includes:
the smoke exhaust pipe (10) is used for conveying high-temperature smoke generated by the thermal power plant;
a dust remover (20) for removing dust from the high temperature flue gas;
a desulfurizing tower (40) for desulfurizing the high-temperature flue gas;
the heat exchange mechanism (70) is used for preheating fuel to be used by utilizing high-temperature flue gas;
wherein, specifically:
one end of the smoke exhaust pipe (10) is connected with the air inlet end of the dust remover (20), the air outlet end of the dust remover (20) is connected with the air inlet end of the desulfurizing tower (40) through a first pipeline (30), the air outlet end of the desulfurizing tower (40) is fixedly connected with a second pipeline (50), one end of the second pipeline (50) is fixedly connected with two groups of third pipelines (60) provided with electromagnetic valves on the second pipeline through a three-way joint, and one end of each group of third pipelines (60) is connected with a group of heat exchange mechanisms (70).
2. The heat-engine plant waste heat recovery and utilization system according to claim 1, wherein the heat exchange mechanism (70) comprises:
a bracket (71);
an air inlet assembly (72) for conveying high-temperature flue gas, and the air inlet assembly (72) is arranged on the bracket (71);
a heating component (73) for preheating fuel by utilizing high-temperature flue gas conveyed by the air inlet component (72), wherein the heating component (73) is arranged on the bracket (71);
a conveying component (75) for conveying the preheated flue gas, wherein the conveying component (75) is arranged on the bracket (71);
and a driving component (76) for rotating the heating component (73) by utilizing the flue gas conveyed by the conveying component (75), wherein the driving component (76) is arranged on the bracket (71).
3. A thermal power plant waste heat recovery and utilization system according to claim 2, wherein the bracket (71) comprises:
a bottom plate (711);
and a side plate (712), wherein the side plate (712) is fixedly installed on one side of the top of the bottom plate (711).
4. A thermal power plant waste heat recovery system according to claim 3, wherein the air intake assembly (72) comprises:
a block (721), the block (721) being fixedly installed on the top of the bottom plate (711), and an inner wall of one end of the block (721) being fixedly installed with a third pipe (60);
a flow channel (722), wherein the inner wall of the square (721) is provided with the flow channel (722);
and the inner wall of the top end of the square block (721) is fixedly provided with a plurality of hard pipes (723).
5. A thermal power plant waste heat recovery system according to claim 3, wherein the heating assembly (73) comprises:
the outer barrel (731), a plurality of hard pipes (723) are fixedly arranged on the inner wall of the bottom end of the outer barrel (731), and an air inlet pipe (753) is fixedly arranged on the inner wall of the top end of the outer barrel (731);
the inner walls of the two ends of the outer cylinder (731) are fixedly provided with the supporting plates (732);
the inner wall of the supporting plate (732) is rotationally connected with the inner cylinder (733) through a bearing, a connecting plate is fixedly arranged on the inner wall of one end of the inner cylinder (733), and the inner wall of the other end of the inner cylinder (733) is detachably connected with a cylinder cover (74);
the rotating shaft (734) is rotatably connected to the side plate (712) through a bearing, and one end of the rotating shaft (734) is fixedly provided with a connecting plate.
6. A thermal power plant waste heat recovery system according to claim 3, wherein the conveying assembly (75) comprises:
a fixing plate (751), the fixing plate (751) being fixedly mounted on a top end side of the side plate (712);
an air pump (752), the air pump (752) being fixedly installed on top of the fixing plate (751);
the air inlet pipe (753), the input end of the air pump (752) is fixedly provided with the air inlet pipe (753);
and the air outlet pipe (754) is fixedly arranged at the output end of the air pump (752), and the air outlet pipe (754) is fixedly arranged at the output end of the air pump (752).
7. A thermal power plant waste heat recovery system according to claim 3, wherein the drive assembly (76) comprises:
a seal box (761), wherein the seal box (761) is fixedly arranged on one side of the side plate (712), and an air outlet pipe (754) is fixedly arranged on the inner wall of the top end of the seal box (761);
a rotating block (762) positioned in the inner cavity of the sealing box (761), wherein a rotating shaft (734) is fixedly arranged on the inner wall of the rotating block (762);
the outer surface of the rotating block (762) is fixedly provided with a plurality of rotating plates (763), and a group of rotating plates (763) are positioned right below the air outlet pipe (754);
the air outlet hole (764) is formed in the inner wall of the bottom end of the sealing box (761).
8. The waste heat recovery and utilization system of a thermal power plant according to claim 5, wherein the cylinder cover (74) is:
the inner wall of one end of the inner cylinder (733) is fixedly provided with a plurality of supporting blocks (742);
and the sealing plate (741) is detachably connected to the supporting block (742) through screws.
9. The waste heat recovery and utilization system of a thermal power plant according to claim 5, wherein the cylinder cover (74) is:
the connecting column (746), the connecting column (746) is inserted on the inner wall of one end of the inner cylinder (733), and a sealing ring is arranged between the connecting column (746) and the inner cylinder (733);
a baffle (747), wherein one end of the connecting column (746) is fixedly provided with the baffle (747);
and a driving block (748), wherein the driving block (748) is fixedly arranged on the baffle (747).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223292669.1U CN219283380U (en) | 2022-12-08 | 2022-12-08 | Waste heat recovery utilizes system in thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223292669.1U CN219283380U (en) | 2022-12-08 | 2022-12-08 | Waste heat recovery utilizes system in thermal power plant |
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| Publication Number | Publication Date |
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| CN219283380U true CN219283380U (en) | 2023-06-30 |
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| CN202223292669.1U Active CN219283380U (en) | 2022-12-08 | 2022-12-08 | Waste heat recovery utilizes system in thermal power plant |
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| CN (1) | CN219283380U (en) |
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2022
- 2022-12-08 CN CN202223292669.1U patent/CN219283380U/en active Active
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