CN116147009A - Boiler waste heat recovery and utilization equipment that discharges fume of thermal power plant - Google Patents
Boiler waste heat recovery and utilization equipment that discharges fume of thermal power plant Download PDFInfo
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- CN116147009A CN116147009A CN202310346889.8A CN202310346889A CN116147009A CN 116147009 A CN116147009 A CN 116147009A CN 202310346889 A CN202310346889 A CN 202310346889A CN 116147009 A CN116147009 A CN 116147009A
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- filter screen
- smoke exhaust
- exhaust pipe
- waste heat
- rotary rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a thermal power plant boiler smoke exhaust waste heat recycling device, which belongs to the technical field of thermal power plant boiler smoke exhaust, and comprises a smoke exhaust pipe and a waste heat recycling mechanism, wherein the waste heat recycling mechanism comprises: the device comprises a recovery box, a smoke exhaust pipe, a recovery assembly, a fixed frame, a filter screen and a cleaning assembly; the flue gas exhausted by the boiler enters the inner side of the flue gas exhaust pipe through the flue gas exhaust cylinder, the flue gas exhaust pipe is S-shaped, the flowing distance of the flue gas can be increased, the water pipe is used for conveying water and is positioned on the inner side of the flue gas exhaust pipe, heat in the flue gas can be absorbed, and the water is heated; the air at the inner side of the recovery box flows, and the air passes through the outer side of the smoke exhaust pipe, so that the heat of the smoke can be absorbed, and the waste heat of the smoke is recycled; through clean subassembly can carry out comprehensive clearance to the filter screen surface to collect the coal ash and the cinder that the clearance dropped, avoid coal ash and cinder to adhere to on exhaust pipe inner wall and raceway outer wall, improve heat exchange efficiency.
Description
Technical Field
The invention belongs to the technical field of boiler smoke exhaust of a thermal power plant, and particularly relates to equipment for recycling waste heat of boiler smoke exhaust of a thermal power plant.
Background
A thermal power plant boiler is a plant that produces electric energy using combustible materials (e.g., coal) as fuel. The basic production process is as follows: heating water to generate steam when the fuel is combusted, converting chemical energy of the fuel into heat energy, pushing the steam turbine to rotate by the steam pressure, converting the heat energy into mechanical energy, and then driving the generator to rotate by the steam turbine, and converting the mechanical energy into electric energy; when the boiler of the thermal power plant is used, a large amount of flue gas is generated, and because the boiler uses coal as fuel, the flue gas contains a large amount of coal ash and coal cinder.
In the use process of the existing heat-engine plant boiler exhaust gas waste heat recycling equipment, because a large amount of coal ash and coal cinder contained in the flue gas are easily attached to the surfaces of the pipeline and the heat exchanger, the heat exchange effect is affected, the flue gas is required to be filtered, and the coal ash and the coal cinder on the filter screen are cleaned so as to ensure the filtering effect; and when the flue gas waste heat is recycled, the heat recovery efficiency is lower.
In order to avoid the technical problems, it is necessary to provide a device for recycling waste heat of boiler exhaust gas of a thermal power plant to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide equipment for recycling waste heat of boiler exhaust gas of a thermal power plant, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a boiler waste heat recovery utilizes equipment of discharging fume of thermal power plant, includes chimney and waste heat recovery mechanism, waste heat recovery mechanism includes:
the recovery box is positioned on the side surface of the smoke exhaust tube, a smoke exhaust tube is arranged on the inner side of the recovery box and connected with one end of the smoke exhaust tube, the shape of the smoke exhaust tube is S-shaped, and a recovery assembly is arranged on the inner side of the recovery box and used for absorbing heat of smoke on the inner side of the smoke exhaust tube and heating water and air entering a boiler;
the utility model discloses a smoke exhaust device, including a smoke exhaust tube, a fixed frame, a filter screen, a cleaning component and a cleaning component, wherein the fixed frame is installed on the inner side of the smoke exhaust tube, the filter screen is installed on the inner side of the fixed frame, the filter screen is round in shape and is rotationally connected with the fixed frame, and the cleaning component is arranged on the surface of the filter screen and is used for cleaning and collecting coal ash and coal cinder on the surface of the filter screen.
As a further technical scheme of the invention: the recovery assembly includes:
the water delivery pipe is positioned on the inner side of the smoke exhaust pipe and is identical to the calandria in shape, the water delivery pipe is provided with a plurality of water guide plates which are uniformly distributed on the inner side of the smoke exhaust pipe, the inner wall of the recovery box is provided with an air guide plate, the middle part of the top end of the recovery box is provided with an air inlet, a fan is arranged on the inner side of the air inlet and used for conveying air to the inner side of the recovery box, and the bottom end of the recovery box is provided with an exhaust pipe and used for conveying the air passing through the outer surface of the smoke exhaust pipe.
As a further technical scheme of the invention: the cleaning assembly includes:
the air guide cover is positioned on the side surface of the filter screen and fixedly connected with the inner wall of the smoke exhaust barrel, a discharge hole is formed in the bottom end of the inner side of the air guide cover, a rotary rod is arranged on the inner side of the discharge hole, a driving piece is arranged at the bottom end of the rotary rod, the output end of the driving piece is fixedly connected with the rotary rod, a brush is arranged on the outer side of the top end of the rotary rod and used for cleaning the surface of the filter screen, and a telescopic component is arranged between the brush and the rotary rod and used for enabling the brush to be in close contact with the surface of the filter screen all the time;
a collecting component is arranged between the outer side of the rotating rod and the smoke discharging barrel and is used for collecting coal ash and coal slag falling on the filter screen; install rotating assembly between rotary rod and the filter screen for make the filter screen rotate at the rotary rod in-process that rotates, make the brush clear up the filter screen surface comprehensively.
As a further technical scheme of the invention: the telescoping assembly includes:
the locating frame is fixedly installed on the outer side of the rotary rod, a locating plate is arranged on the inner side of the locating frame and is connected with the locating frame in a concave-convex mode, an elastic piece is installed between the locating frame and the locating plate and used for adjusting the position of the locating plate on the locating frame, and one end of the locating plate extending out of the locating frame is fixedly connected with the hairbrush.
As a further technical scheme of the invention: the collection assembly includes:
spiral leaf, fixed mounting is in the rotary rod outside to be located the relief hole inboard, relief hole bottom end side is equipped with the delivery hole, the collection frame is installed to delivery hole bottom end, the collection frame is used for collecting coal ash and cinder, collect frame one end and install the closing cap for take out the inboard coal ash and cinder of collection frame.
As a further technical scheme of the invention: the rotating assembly includes:
the fixed plate, fixed mounting is in on the wind scooper inner wall, the rotary rod top runs through the fixed plate to rotate with the fixed plate and be connected, rotary rod top fixed mounting has the driving tooth, install the dwang on the fixed plate, the dwang rotates with the fixed plate to be connected, the connecting tooth is installed in the dwang outside, the connecting tooth is connected with the driving tooth meshing, rotary rod top fixed mounting has first bevel gear, filter screen middle part fixed mounting has the locating lever, fixed mounting has the second bevel gear on the locating lever, first bevel gear is connected with the second bevel gear meshing.
As a further technical scheme of the invention: the cross section of the smoke exhaust pipe is flat, and the guide plate is isosceles triangle and is positioned at the corner of the smoke exhaust pipe for enabling air to be fully contacted with the surface of the smoke exhaust pipe.
Compared with the prior art, the invention has the following beneficial effects:
the smoke exhausted by the boiler enters the inner side of the smoke exhaust pipe through the smoke exhaust cylinder, the smoke exhaust pipe is S-shaped, the flowing distance of the smoke can be increased, the water pipe is used for conveying water and is positioned on the inner side of the smoke exhaust pipe, and heat in the smoke can be absorbed, so that the water can be heated; the air at the inner side of the recovery box flows, and the air passes through the outer side of the smoke exhaust pipe, so that the heat of the smoke can be absorbed, and the waste heat of the smoke is recycled; through clean subassembly can carry out comprehensive clearance to the filter screen surface to collect the coal ash and the cinder that the clearance dropped, avoid coal ash and cinder to adhere to on exhaust pipe inner wall and raceway outer wall, improve heat exchange efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of a cleaning assembly according to the present invention.
Fig. 3 is an enlarged schematic view of the structure of fig. 2 a according to the present invention.
Fig. 4 is a schematic view of the structure between the smoke exhaust pipe and the water pipe in the present invention.
Fig. 5 is a schematic view of the structure of the smoke exhaust pipe in the present invention.
In the accompanying drawings: 1-smoke exhaust pipe, 2-recovery box, 3-smoke exhaust pipe, 4-recovery component, 41-water delivery pipe, 42-deflector, 43-fan, 44-exhaust pipe, 5-fixed frame, 6-filter screen, 7-cleaning component, 71-wind scooper, 72-discharge hole, 73-driving piece, 74-rotating rod, 75-brush, 76-telescopic component, 761-positioning frame, 762-positioning plate, 763-elastic piece, 77-collecting component, 771-spiral blade, 772-material delivery hole, 773-collecting frame, 774-sealing cover, 78-rotating component, 781-fixed plate, 782-driving tooth, 783-rotating rod, 784-connecting tooth, 785-first bevel gear, 786-positioning rod, 787-second bevel gear.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
As shown in fig. 1 to 5, in an embodiment provided by the invention, a device for recycling waste heat of boiler exhaust smoke of a thermal power plant includes a smoke exhaust pipe 1 and a waste heat recycling mechanism, wherein the waste heat recycling mechanism includes:
the recovery box 2 is positioned on the side surface of the smoke exhaust barrel 1, a smoke exhaust pipe 3 is arranged on the inner side of the recovery box 2 and connected with one end of the smoke exhaust barrel 1, the smoke exhaust pipe 3 is S-shaped, and a recovery component 4 is arranged on the inner side of the recovery box 2 and used for absorbing heat of smoke on the inner side of the smoke exhaust pipe 3 and heating water and air entering a boiler;
the inside fixed frame 5 of installing of section of thick bamboo 1 discharges fume, fixed frame 5 inboard installs filter screen 6, the shape of filter screen 6 is circular, filter screen 6 rotates with fixed frame 5 to be connected, filter screen 6 surface is equipped with clean subassembly 7 for clear up and collect the coal ash and the cinder on filter screen 6 surface.
In this embodiment, the flue gas exhausted from the boiler enters the inner side of the flue gas exhaust pipe 3 through the flue gas exhaust pipe 1, the shape of the flue gas exhaust pipe 3 is S-shaped, the flowing distance of the flue gas can be increased, the water pipe 41 is used for conveying water and is positioned at the inner side of the flue gas exhaust pipe 3, and the heat in the flue gas can be absorbed, so that the water can be heated; the air at the inner side of the recovery box 2 flows, and the air passes through the outer side of the smoke exhaust pipe 3, so that the heat of the smoke can be absorbed, and the recovery and the utilization of the smoke waste heat are realized; the cleaning assembly 7 can comprehensively clean the surface of the filter screen 6 and collect coal ash and coal cinder which fall off during cleaning, so that the coal ash and the coal cinder are prevented from adhering to the inner wall of the smoke exhaust pipe 3 and the outer wall of the water delivery pipe 41, and the heat exchange efficiency is improved; a rolling bearing is arranged between the fixed frame 5 and the filter screen 6, and the filter screen 6 can stably rotate on the fixed frame 5.
In one embodiment of the present invention, referring to fig. 1, 4 and 5, the recovery assembly 4 includes:
the water delivery pipe 41 is located the inboard of exhaust pipe 3, with the shape of calandria is the same, the water delivery pipe 41 is equipped with a plurality of and evenly distributed in exhaust pipe 3 inboard, install guide plate 42 on the collection box 2 inner wall, collection box 2 top middle part is equipped with the air intake, fan 43 is installed to the air intake inboard for carry the air to collection box 2 inboard, exhaust pipe 44 is installed to collection box 2 bottom for carry the air through exhaust pipe 3 surface.
In this embodiment, the water pipe 41 is provided with a plurality of water pipes and is uniformly distributed inside the smoke exhaust pipe 3, and the flow direction of water inside the water pipe 41 is opposite to the flow direction of the smoke, so that the heat in the smoke is conveniently and fully absorbed; the fan 43 at the inner side of the air inlet can continuously convey air to the inner side of the recovery box 2, and the air is fully contacted with the surface of the smoke exhaust pipe 3 through the guide plate 42, so that the heat of the smoke can be effectively absorbed; the cross section of the smoke exhaust pipe 3 is flat, the guide plate 42 is isosceles triangle and is positioned at the corner of the smoke exhaust pipe 3, so that the air is fully contacted with the surface of the smoke exhaust pipe 3; the flow direction of the air is opposite to the flow direction of the flue gas, and the warmed air can be conveyed through the exhaust pipe 44, so that the efficiency of recycling the flue gas waste heat is improved.
In one embodiment of the present invention, referring to fig. 1, 2 and 3, the cleaning assembly 7 includes:
the air guide cover 71 is positioned on the side surface of the filter screen 6 and is fixedly connected with the inner wall of the smoke exhaust barrel 1, a discharge hole 72 is formed in the bottom end of the inner side of the air guide cover 71, a rotary rod 74 is arranged on the inner side of the discharge hole 72, a driving piece 73 is arranged at the bottom end of the rotary rod 74, the output end of the driving piece 73 is fixedly connected with the rotary rod 74, a hairbrush 75 is arranged on the outer side of the top end of the rotary rod 74 and is used for cleaning the surface of the filter screen 6, and a telescopic component 76 is arranged between the hairbrush 75 and the rotary rod 74 and is used for enabling the hairbrush 75 to be always in tight contact with the surface of the filter screen 6;
a collecting component 77 is arranged between the outer side of the rotating rod 74 and the smoke exhaust barrel 1 and is used for collecting coal ash and coal slag falling on the filter screen 6; a rotating assembly 78 is installed between the rotating rod 74 and the filter screen 6, and is used for rotating the filter screen 6 in the process of rotating the rotating rod 74, so that the brush 75 can clean the surface of the filter screen 6 comprehensively.
The telescoping assembly 76 includes:
the positioning frame 761 is fixedly installed on the outer side of the rotating rod 74, a positioning plate 762 is arranged on the inner side of the positioning frame 761, the positioning plate 762 is connected with the positioning frame 761 in a concave-convex mode, an elastic piece 763 is installed between the positioning frame 761 and the positioning plate 762 and used for adjusting the position of the positioning plate 762 on the positioning frame 761, and one end, extending out of the positioning frame 761, of the positioning plate 762 is fixedly connected with the hairbrush 75.
The collection assembly 77 includes:
The rotating assembly 78 includes:
the fixed plate 781, fixed mounting is in on the air guide cover 71 inner wall, the rotary rod 74 top runs through the fixed plate 781 to rotate with the fixed plate 781 and be connected, rotary rod 74 top fixed mounting has driving tooth 782, install dwang 783 on the fixed plate 781, dwang 783 rotates with the fixed plate 781 to be connected, connecting tooth 784 is installed in the dwang 783 outside, connecting tooth 784 is connected with driving tooth 782 meshing, dwang 783 top fixed mounting has first bevel gear 785, filter screen 6 middle part fixed mounting has locating lever 786, fixed mounting has second bevel gear 787 on the locating lever 786, first bevel gear 785 is connected with second bevel gear 787 meshing.
In this embodiment, the air guide cover 71 is fixedly installed on the inner wall of the smoke exhaust pipe 1, the outer side of the air guide cover 71 is tapered, so that smoke can conveniently pass through the filter screen 6, the driving piece 73 can be a rotating motor or a stepping motor, in this embodiment, the driving piece 73 is a rotating motor, the output end of the driving piece 73 is connected with the bottom end of the rotating rod 74, the driving piece 73 can control the rotating rod 74 to stably rotate inside the air guide cover 71, a telescopic component 76 and a hairbrush 75 are arranged outside the rotating rod 74, the number of the telescopic component 76 and the hairbrush 75 is always provided with a plurality of parts uniformly distributed outside the rotating rod 74, the positioning plate 762 can move along the inner side of the positioning frame 761, the elastic piece 763 can be a spring or rubber, in this embodiment, the elastic piece 763 is a spring, so that the position of the positioning plate 762 inside the positioning frame 761 can be conveniently adjusted, and the hairbrush 75 is tightly contacted with the surface of the filter screen 6 in the process of rotating the rotating rod 74, so that the cleaning effect is improved;
The working principle of the invention is as follows:
in the invention, the flue gas exhausted by the boiler firstly passes through the smoke exhaust pipe 1, at the moment, the driving piece 73 is started, the filter screen 6 rotates at the inner side of the fixed frame 5 and filters the flue gas, at the moment, the rotary rod 74 drives the hairbrush 75 to rotate at the surface of the filter screen 6 to clean coal ash and coal cinder on the surface of the filter screen 6, the coal ash and the coal cinder fall into the inner side of the collecting frame 773 through the spiral blade 771, the filtered flue gas enters the smoke exhaust pipe 3, at the moment, the inner side of the water pipe 41 carries out water conveying operation, the fan 43 starts to work, the flue gas can heat water and air in the flowing process, the heated water and air enter the boiler, the working efficiency of the boiler can be improved, and the full utilization of the flue gas waste heat is realized.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a boiler waste heat recovery utilizes equipment of discharging fume of thermal power plant, includes chimney and waste heat recovery mechanism, its characterized in that, waste heat recovery mechanism includes:
the recovery box is positioned on the side surface of the smoke exhaust tube, a smoke exhaust tube is arranged on the inner side of the recovery box and connected with one end of the smoke exhaust tube, the shape of the smoke exhaust tube is S-shaped, and a recovery assembly is arranged on the inner side of the recovery box and used for absorbing heat of smoke on the inner side of the smoke exhaust tube and heating water and air entering a boiler;
the utility model discloses a smoke exhaust device, including a smoke exhaust tube, a fixed frame, a filter screen, a cleaning component and a cleaning component, wherein the fixed frame is installed on the inner side of the smoke exhaust tube, the filter screen is installed on the inner side of the fixed frame, the filter screen is round in shape and is rotationally connected with the fixed frame, and the cleaning component is arranged on the surface of the filter screen and is used for cleaning and collecting coal ash and coal cinder on the surface of the filter screen.
2. The thermal power plant boiler exhaust gas waste heat recovery apparatus according to claim 1, wherein the recovery assembly comprises:
the water delivery pipe is positioned on the inner side of the smoke exhaust pipe and is identical to the calandria in shape, the water delivery pipe is provided with a plurality of water guide plates which are uniformly distributed on the inner side of the smoke exhaust pipe, the inner wall of the recovery box is provided with an air guide plate, the middle part of the top end of the recovery box is provided with an air inlet, a fan is arranged on the inner side of the air inlet and used for conveying air to the inner side of the recovery box, and the bottom end of the recovery box is provided with an exhaust pipe and used for conveying the air passing through the outer surface of the smoke exhaust pipe.
3. The thermal power plant boiler exhaust gas waste heat recovery apparatus according to claim 2, wherein the cleaning assembly comprises:
the air guide cover is positioned on the side surface of the filter screen and fixedly connected with the inner wall of the smoke exhaust barrel, a discharge hole is formed in the bottom end of the inner side of the air guide cover, a rotary rod is arranged on the inner side of the discharge hole, a driving piece is arranged at the bottom end of the rotary rod, the output end of the driving piece is fixedly connected with the rotary rod, a brush is arranged on the outer side of the top end of the rotary rod and used for cleaning the surface of the filter screen, and a telescopic component is arranged between the brush and the rotary rod and used for enabling the brush to be in close contact with the surface of the filter screen all the time;
a collecting component is arranged between the outer side of the rotating rod and the smoke discharging barrel and is used for collecting coal ash and coal slag falling on the filter screen; install rotating assembly between rotary rod and the filter screen for make the filter screen rotate at the rotary rod in-process that rotates, make the brush clear up the filter screen surface comprehensively.
4. A thermal power plant boiler flue gas waste heat recovery apparatus according to claim 3, wherein the telescopic assembly comprises:
the locating frame is fixedly installed on the outer side of the rotary rod, a locating plate is arranged on the inner side of the locating frame and is connected with the locating frame in a concave-convex mode, an elastic piece is installed between the locating frame and the locating plate and used for adjusting the position of the locating plate on the locating frame, and one end of the locating plate extending out of the locating frame is fixedly connected with the hairbrush.
5. The thermal power plant boiler exhaust gas waste heat recovery apparatus according to claim 4, wherein the collecting assembly comprises:
spiral leaf, fixed mounting is in the rotary rod outside to be located the relief hole inboard, relief hole bottom end side is equipped with the delivery hole, the collection frame is installed to delivery hole bottom end, the collection frame is used for collecting coal ash and cinder, collect frame one end and install the closing cap for take out the inboard coal ash and cinder of collection frame.
6. The thermal power plant boiler exhaust gas waste heat recovery apparatus according to claim 5, wherein the rotating assembly comprises:
the fixed plate, fixed mounting is in on the wind scooper inner wall, the rotary rod top runs through the fixed plate to rotate with the fixed plate and be connected, rotary rod top fixed mounting has the driving tooth, install the dwang on the fixed plate, the dwang rotates with the fixed plate to be connected, the connecting tooth is installed in the dwang outside, the connecting tooth is connected with the driving tooth meshing, rotary rod top fixed mounting has first bevel gear, filter screen middle part fixed mounting has the locating lever, fixed mounting has the second bevel gear on the locating lever, first bevel gear is connected with the second bevel gear meshing.
7. The heat-engine plant boiler exhaust gas waste heat recovery apparatus according to claim 2, wherein the cross-sectional shape of the exhaust pipe is flat, and the deflector is isosceles triangle and is located at the corner of the exhaust pipe for making the air fully contact with the surface of the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310346889.8A CN116147009A (en) | 2023-04-03 | 2023-04-03 | Boiler waste heat recovery and utilization equipment that discharges fume of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310346889.8A CN116147009A (en) | 2023-04-03 | 2023-04-03 | Boiler waste heat recovery and utilization equipment that discharges fume of thermal power plant |
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| CN116147009A true CN116147009A (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310346889.8A Pending CN116147009A (en) | 2023-04-03 | 2023-04-03 | Boiler waste heat recovery and utilization equipment that discharges fume of thermal power plant |
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| CN (1) | CN116147009A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951440A (en) * | 2023-07-31 | 2023-10-27 | 包钢集团设计研究院（有限公司） | Boiler waste heat utilization device with heat conversion function |
-
2023
- 2023-04-03 CN CN202310346889.8A patent/CN116147009A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951440A (en) * | 2023-07-31 | 2023-10-27 | 包钢集团设计研究院（有限公司） | Boiler waste heat utilization device with heat conversion function |
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