CN110701939B - Waste heat recovery device for condensing flue gas of energy-saving coal power plant - Google Patents
Waste heat recovery device for condensing flue gas of energy-saving coal power plant Download PDFInfo
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- CN110701939B CN110701939B CN201910796895.7A CN201910796895A CN110701939B CN 110701939 B CN110701939 B CN 110701939B CN 201910796895 A CN201910796895 A CN 201910796895A CN 110701939 B CN110701939 B CN 110701939B
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- waste heat
- heat recovery
- wall
- fixing plate
- recovery unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention provides a waste heat recovery device for condensing flue gas of an energy-saving coal power plant, which comprises a plurality of waste heat recovery units connected up and down, wherein the waste heat recovery unit at the bottom is connected with a chimney, the waste heat recovery unit at the top is connected with a smoke exhaust pipeline, and the flue gas generated by burning coal in a power plant passes through the whole waste heat recovery device and then is discharged from the smoke exhaust pipeline. The heat absorption assembly of the waste heat recovery unit can absorb heat of smoke and conduct to the heat conduction head, because the heat conduction head passes the heat conduction port of the connecting cylinder and stretches out of the connecting cylinder, a surrounding plate is sleeved between the first fixing plate and the second fixing plate of the outer wall of the connecting cylinder, the outer wall of the surrounding plate is provided with a water inlet nozzle and a water outlet nozzle, the heat conduction head can heat entering cold water, water flow can enter a waste heat recovery unit below the waste heat recovery unit from the upper side, and the cold water can be fully heated and can be used for resident bathing water and other domestic water.
Description
Technical Field
The invention relates to flue gas treatment equipment of a coal power plant, in particular to a waste heat recovery device for condensing flue gas of an energy-saving coal power plant.
Background
At present, middle and small-sized power generation plants in China generate electricity by using coal, smoke generated by coal combustion is directly discharged after being subjected to desulfurization treatment, the temperature of the smoke is high, and heat in the smoke is wasted. The boiler room burning coal of power plant is for lasting operation, requires stable operating temperature, and the flue gas of boiler room burning will be discharged to going forward fast, is favorable to boiler room continuous operation. The coal consumption of a power plant is relatively large, the generated smoke is also large, and the heat of the smoke can be absorbed and utilized, so that the aims of energy conservation and environmental protection can be fulfilled. At present, two most common flue gas heat recovery modes are provided, the flue gas heat is used for heating, the flue gas often contains toxic gas, and the flue gas heating is not safe enough; the water is heated by utilizing the heat of the flue gas to obtain hot water for residents to use, and the mode has relatively high use value and is convenient to realize. In view of the problems, the invention provides a waste heat recovery device for condensing flue gas of an energy-saving coal power plant, which is provided with a plurality of waste heat recovery units connected up and down, so that the waste heat of the flue gas is favorable for heating water, and the heated water can be used for resident bath water and domestic water.
Disclosure of Invention
The invention provides a waste heat recovery device for condensing flue gas of an energy-saving coal power plant, which is provided with a plurality of waste heat recovery units connected up and down, so that the waste heat of the flue gas is favorable for heating water, and the heated water can be used for resident bath water and domestic water.
The technical scheme of the invention is realized as follows: the waste heat recovery device for condensing the flue gas of the energy-saving coal power plant comprises a plurality of waste heat recovery units which are connected up and down, wherein the waste heat recovery unit at the bottom is connected with a chimney, and the waste heat recovery unit at the top is connected with a smoke exhaust pipeline; the waste heat recovery unit comprises a connecting cylinder, a heat absorption assembly arranged in the connecting cylinder and a cylindrical surrounding plate arranged outside the connecting cylinder; the top opening and the bottom opening of each connecting cylinder are provided with first flange plates, and the two connecting cylinders of adjacent waste heat recovery units are fixedly connected through the first flange plates; the outer wall of the connecting cylinder is outwards provided with a first fixing plate and a second fixing plate which are distributed up and down and are annular, and the enclosing plate is fixedly sleeved on the edges of the first fixing plate and the second fixing plate; a plurality of circular array heat conduction ports are formed in the outer wall of the connecting cylinder between the first fixing plate and the second fixing plate; the heat absorption assembly comprises a heat absorption barrel arranged in the connecting barrel, a plurality of circular array heat absorption sheets are arranged on the inner wall of the heat absorption barrel inwards, a plurality of circular array heat conduction heads are arranged on the outer wall of the heat absorption barrel outwards, and the heat conduction heads penetrate through the heat conduction ports and extend out of the connecting barrel; the upper half part of one side of the outer wall of the enclosing plate is outwards provided with a water inlet nozzle, the lower half part of the other side of the outer wall of the enclosing plate is outwards provided with a water outlet nozzle, and the water outlet nozzle of the upper enclosing plate of the adjacent waste heat recovery unit is connected with the water inlet nozzle of the lower enclosing plate.
Furthermore, a plurality of convex blocks with different sizes are arranged on the two sides of the heat absorbing sheet.
Further, an installation groove is formed in the inner wall of the connecting cylinder, and the heat absorbing cylinder is fixed in the installation groove; sealing rings are further mounted between the top and the bottom of the heat absorbing cylinder and the mounting groove.
Furthermore, a plurality of through holes which are broken through are formed in the side wall of the heat conducting head.
Further, the bounding wall inner wall is equipped with first sealing ring and second sealing ring respectively along top mouth and end opening, first sealing ring is contradicted on first fixed plate bottom surface, the second sealing ring is contradicted on second fixed plate top surface.
Furthermore, a plurality of first connecting holes in circular array are formed in the first flange plate, and first connecting bolts penetrate through the first connecting holes of the first flange plates of two adjacent connecting cylinders.
The water inlet nozzle and the water outlet nozzle are respectively provided with a second flange plate, the second flange plate is provided with a plurality of second connecting holes in circular arrays, and second connecting bolts penetrate through the second connecting holes of the second flange plates on the adjacent water outlet nozzle and the water inlet nozzle.
By adopting the technical scheme, the invention has the beneficial effects that:
the invention relates to a waste heat recovery device for condensing flue gas of an energy-saving coal power plant, which comprises a plurality of waste heat recovery units connected up and down, wherein the waste heat recovery unit at the bottom is connected with a chimney, the waste heat recovery unit at the top is connected with a smoke exhaust pipeline, and the flue gas generated by burning coal in a power plant passes through the whole waste heat recovery device and then is discharged from the smoke exhaust pipeline. The heat absorption assembly of the waste heat recovery unit can absorb heat of smoke and conduct to the heat conduction head, because the heat conduction head passes the heat conduction port of the connecting cylinder and stretches out of the connecting cylinder, a surrounding plate is sleeved between the first fixing plate and the second fixing plate of the outer wall of the connecting cylinder, the outer wall of the surrounding plate is provided with a water inlet nozzle and a water outlet nozzle, the heat conduction head can heat entering cold water, water flow can enter a waste heat recovery unit below the waste heat recovery unit from the upper side, and the cold water can be fully heated and can be used for resident bathing water and other domestic water.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a waste heat recovery unit of the present invention;
FIG. 3 is a schematic diagram of the disassembled structure of FIG. 2;
wherein: 1. the heat-conducting type smoke exhaust device comprises a chimney, a smoke exhaust pipeline, a connecting cylinder, a surrounding plate, a first flange, a first fixing plate, a second fixing plate, a heat conducting port, a heat absorbing cylinder, a heat absorbing sheet, a heat conducting head, a water inlet nozzle, a water outlet nozzle, a protruding block, a mounting groove, a sealing ring, a through hole, a water outlet nozzle, a water.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2 and 3, the waste heat recovery device for condensing flue gas of an energy-saving coal power plant comprises a plurality of waste heat recovery units which are connected up and down, wherein the waste heat recovery unit at the bottom is connected with a chimney 1, and the waste heat recovery unit at the top is connected with a smoke exhaust pipeline 2; the waste heat recovery unit comprises a connecting cylinder 3, a heat absorption assembly arranged in the connecting cylinder 3 and a cylindrical surrounding plate 4 arranged outside the connecting cylinder 3; the top opening and the bottom opening of each connecting cylinder 4 are provided with first flange plates 5, and the two connecting cylinders 3 of adjacent waste heat recovery units are fixedly connected through the first flange plates 5; the outer wall of the connecting cylinder 3 is outwards provided with a first fixing plate 6 and a second fixing plate 7 which are distributed up and down and are annular, and the enclosing plate 4 is fixedly sleeved on the edges of the first fixing plate 6 and the second fixing plate 7; a plurality of circular array heat conduction ports 8 are formed in the outer wall of the connecting cylinder 3 between the first fixing plate 6 and the second fixing plate 7; the heat absorption assembly comprises a heat absorption barrel 9 arranged in the connecting barrel 3, a plurality of heat absorption sheets 10 in circular arrays are arranged on the inner wall of the heat absorption barrel 9 inwards, a plurality of heat conduction heads 11 in circular arrays are arranged on the outer wall of the heat absorption barrel 9 outwards, and the heat conduction heads 11 penetrate through the heat conduction ports 8 and then extend out of the connecting barrel 3; the upper half part of one side of the outer wall of the enclosing plate 4 is outwards provided with a water inlet nozzle 12, the lower half part of the other side of the outer wall of the enclosing plate 4 is outwards provided with a water outlet nozzle 13, and the water outlet nozzle 13 of the upper enclosing plate 4 of the adjacent waste heat recovery unit is connected with the water inlet nozzle 12 of the lower enclosing plate 4.
The heat absorbing sheet 10 of the present embodiment is provided with a plurality of bumps 14 with different sizes towards two sides. The plurality of bumps 14 can increase the exposed area of the heat absorbing sheet 10, provide the heat absorbing capacity of the heat absorbing sheet 10, and can quickly absorb heat in smoke.
In the embodiment, an installation groove 15 is formed in the inner wall of the connecting cylinder 3, and the heat absorbing cylinder 9 is fixed in the installation groove 15; sealing rings 16 are also arranged between the top and the bottom of the heat absorbing cylinder 9 and the mounting groove 15. The heat absorption cylinder 9 is fixedly arranged in the mounting groove 15, and the sealing ring 16 can realize sealing between the heat absorption cylinder 9 and the mounting groove 15 and prevent cold water from entering the connecting cylinder 3.
The lateral wall of the heat conducting head 11 of the embodiment is provided with a plurality of through holes 17 which are broken through, the heat conducting head 11 extends out of the connecting cylinder 3 to heat cold water, the through holes 17 can reduce the resistance of the heat conducting head 11 to the flow of the cold water, meanwhile, the exposed area of the heat conducting head 11 is also increased through the through holes 17, and heat can be quickly conducted to the cold water.
The inner wall of the coaming 4 of the embodiment is respectively provided with a first sealing ring 18 and a second sealing ring 19 along the top opening and the bottom opening, the first sealing ring 18 is abutted on the bottom surface of the first fixing plate 6, and the second sealing ring 19 is abutted on the top surface of the second fixing plate 7. The enclosing plate 4 is fixed on the edges of the first fixing plate 6 and the second fixing plate 7 by means of the first sealing ring 18 and the second sealing ring 19, and the first sealing ring 18 and the second sealing ring 19 also play a role in sealing to prevent cold water from spilling from the edges of the first fixing plate 6 and the second fixing plate 7.
In the embodiment, the first flange 5 is provided with a plurality of first connection holes 20 in a circular array, and the first connection holes 20 of the first flanges 5 of two adjacent connection cylinders 3 are provided with first connection bolts 21. The first connecting bolt 21 can firmly connect the adjacent connecting cylinders 3, and the installation and the disassembly are convenient and reliable.
The water inlet nozzle 12 and the water outlet nozzle 13 of this embodiment are both provided with a second flange plate 22, the second flange plate 22 is provided with a plurality of second connecting holes 23 in a circular array, and a second connecting bolt 24 is arranged in the second connecting hole 23 of the second flange plate 22 on the adjacent water outlet nozzle 13 and the water inlet nozzle 12 in a penetrating manner. The water outlet nozzle 13 of the upper enclosing plate 5 of the adjacent waste heat recovery unit is connected with the water inlet nozzle 12 of the lower enclosing plate 4, and the water outlet nozzle 13 is connected with the water inlet nozzle 12 through the second flange plate 22, so that the water outlet nozzle 13 and the water inlet nozzle 12 are fixed firmly and reliably.
The invention relates to a waste heat recovery device for condensing flue gas of an energy-saving coal power plant, which comprises a plurality of waste heat recovery units connected up and down, wherein the waste heat recovery unit at the bottom is connected with a chimney 1, the waste heat recovery unit at the top is connected with a smoke exhaust pipeline 2, and the flue gas generated by burning coal in the power plant passes through the whole waste heat recovery device and then is discharged from the smoke exhaust pipeline 2. The heat absorption assembly of the waste heat recovery unit can absorb the heat of the flue gas and conduct to the heat conduction head 11, because the heat conduction head 11 passes through the heat conduction port 8 of the connecting cylinder 3 and extends to the outside of the connecting cylinder 3, the cover is equipped with the bounding wall 4 between the first fixed plate 6 and the second fixed plate 7 of the outer wall of the connecting cylinder 3, the outer wall of the bounding wall 4 is provided with the water inlet nozzle 12 and the water outlet nozzle 13, the heat conduction head 11 can heat the entering cold water like this, the water flow can enter the waste heat recovery unit below from the waste heat recovery unit above, the cold water can be fully heated like this, and the waste heat recovery unit can be used for the water for bathing and.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. A waste heat recovery device for condensing flue gas of an energy-saving coal power plant is characterized by comprising a plurality of waste heat recovery units which are connected up and down, wherein the waste heat recovery unit at the bottom is connected with a chimney (1), and the waste heat recovery unit at the top is connected with a smoke exhaust pipeline (2); the waste heat recovery unit comprises a connecting cylinder (3), a heat absorption assembly arranged in the connecting cylinder (3) and a cylindrical coaming (4) arranged outside the connecting cylinder (3); the top opening and the bottom opening of each connecting cylinder (3) are respectively provided with a first flange (5), and the two connecting cylinders (3) of adjacent waste heat recovery units are fixedly connected by virtue of the first flanges (5); the outer wall of the connecting cylinder (3) is outwards provided with a first fixing plate (6) and a second fixing plate (7) which are distributed up and down and are annular, and the enclosing plate (4) is fixedly sleeved on the edges of the first fixing plate (6) and the second fixing plate (7); a plurality of circular array heat conduction ports (8) are formed in the outer wall of the connecting cylinder (3) between the first fixing plate (6) and the second fixing plate (7); the heat absorption assembly comprises a heat absorption barrel (9) arranged in the connecting barrel (3), a plurality of heat absorption sheets (10) in a circular array are arranged on the inner wall of the heat absorption barrel (9) inwards, a plurality of heat conduction heads (11) in a circular array are arranged on the outer wall of the heat absorption barrel (9) outwards, and the heat conduction heads (11) penetrate through the heat conduction ports (8) and then extend out of the connecting barrel (3); the upper half part of one side of the outer wall of the enclosing plate (4) is outwards provided with a water inlet nozzle (12), the lower half part of the other side of the outer wall of the enclosing plate (4) is outwards provided with a water outlet nozzle (13), and the water outlet nozzle (13) of the upper enclosing plate (4) of the adjacent waste heat recovery unit is connected with the water inlet nozzle (12) of the lower enclosing plate (4);
an installation groove (15) is formed in the inner wall of the connecting cylinder (3), and the heat absorbing cylinder (9) is fixed in the installation groove (15); sealing rings (16) are further arranged between the top and the bottom of the heat absorbing cylinder (9) and the mounting groove (15);
a first sealing ring (18) and a second sealing ring (19) are respectively arranged on the inner wall of the enclosing plate (4) along the top opening and the bottom opening, the first sealing ring (18) is abutted against the bottom surface of the first fixing plate (6), and the second sealing ring (19) is abutted against the top surface of the second fixing plate (7);
the first flange plate (5) is provided with a plurality of first connecting holes (20) in a circular array, and first connecting bolts (21) penetrate through the first connecting holes (20) of the first flange plates (5) of two adjacent connecting cylinders (3);
all be equipped with second ring flange (22) on water inlet nozzle (12) and faucet (13), set up second connecting hole (23) of a plurality of circular arrays on second ring flange (22), wear to be equipped with second connecting bolt (24) in second connecting hole (23) of second ring flange (22) on adjacent faucet (13) and water inlet nozzle (12).
2. A waste heat recovery device for energy saving type flue gas condensation of a coal power plant according to claim 1, characterized in that the heat absorbing sheet (10) is provided with a plurality of projections (14) with different sizes towards two sides.
3. A waste heat recovery device for energy saving type flue gas condensation of a coal power plant according to claim 1, characterized in that the side wall of the heat conducting head (11) is provided with a plurality of through holes (17) which are perforated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796895.7A CN110701939B (en) | 2019-08-27 | 2019-08-27 | Waste heat recovery device for condensing flue gas of energy-saving coal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796895.7A CN110701939B (en) | 2019-08-27 | 2019-08-27 | Waste heat recovery device for condensing flue gas of energy-saving coal power plant |
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| Publication Number | Publication Date |
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| CN110701939A CN110701939A (en) | 2020-01-17 |
| CN110701939B true CN110701939B (en) | 2020-11-06 |
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| CN201910796895.7A Active CN110701939B (en) | 2019-08-27 | 2019-08-27 | Waste heat recovery device for condensing flue gas of energy-saving coal power plant |
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| CN111408258B (en) * | 2020-04-14 | 2024-08-16 | 大唐环境产业集团股份有限公司 | Flue gas outlet device of absorption tower |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201293572Y (en) * | 2008-11-21 | 2009-08-19 | 北京中科正石节能技术有限公司 | Flue gas waste heat recovery machine |
| CN103673697A (en) * | 2012-09-07 | 2014-03-26 | 天津市宏鹏塑料制品公司 | Waste heat carrier utilization system |
| CN204027403U (en) * | 2014-08-12 | 2014-12-17 | 朱春华 | A kind of convection type flue gas heat exchange tube |
| CN105180681A (en) * | 2015-11-05 | 2015-12-23 | 洛阳隆华传热节能股份有限公司 | Detachable pipe bundle flue type heat collection equipment and method |
| CN206192157U (en) * | 2016-07-11 | 2017-05-24 | 北京众诚永源节能环保技术有限公司 | Novel waste heat of boiler flue gas recoverer |
| CN206399242U (en) * | 2017-01-18 | 2017-08-11 | 湖北工业大学 | A kind of high-efficiency cold-hot fluid heat transfer sleeve pipe |
| CN109029048A (en) * | 2018-08-14 | 2018-12-18 | 李洁 | A kind of industrial smoke waste heat recycling system |
-
2019
- 2019-08-27 CN CN201910796895.7A patent/CN110701939B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201293572Y (en) * | 2008-11-21 | 2009-08-19 | 北京中科正石节能技术有限公司 | Flue gas waste heat recovery machine |
| CN103673697A (en) * | 2012-09-07 | 2014-03-26 | 天津市宏鹏塑料制品公司 | Waste heat carrier utilization system |
| CN204027403U (en) * | 2014-08-12 | 2014-12-17 | 朱春华 | A kind of convection type flue gas heat exchange tube |
| CN105180681A (en) * | 2015-11-05 | 2015-12-23 | 洛阳隆华传热节能股份有限公司 | Detachable pipe bundle flue type heat collection equipment and method |
| CN206192157U (en) * | 2016-07-11 | 2017-05-24 | 北京众诚永源节能环保技术有限公司 | Novel waste heat of boiler flue gas recoverer |
| CN206399242U (en) * | 2017-01-18 | 2017-08-11 | 湖北工业大学 | A kind of high-efficiency cold-hot fluid heat transfer sleeve pipe |
| CN109029048A (en) * | 2018-08-14 | 2018-12-18 | 李洁 | A kind of industrial smoke waste heat recycling system |
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