CN111043619A - Waste heat utilization device and use method - Google Patents
Waste heat utilization device and use method Download PDFInfo
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- CN111043619A CN111043619A CN201911337215.1A CN201911337215A CN111043619A CN 111043619 A CN111043619 A CN 111043619A CN 201911337215 A CN201911337215 A CN 201911337215A CN 111043619 A CN111043619 A CN 111043619A
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- waste heat
- flue gas
- heat
- heat exchange
- heat recovery
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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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
- F23J15/006—Layout of treatment plant
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
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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
Abstract
The invention belongs to the technical field of boilers, in particular to a waste heat utilization device and a use method thereof, which comprises a boiler and a waste heat recovery tank, wherein a hot flue gas outlet pipe is fixedly arranged at the bottom of the outer wall at one side of the boiler, a hot flue gas inlet pipe is fixedly arranged at the bottom of the outer wall at one side of the waste heat recovery tank close to the boiler, a second connecting pipe is arranged between the hot flue gas outlet pipe and the hot flue gas inlet pipe, a first guide plate is fixedly arranged on the vertical inner wall at one side of the waste heat recovery tank, a second guide plate is fixedly arranged on the vertical inner wall at the other side of the waste heat recovery tank, heat conducting rods are fixedly connected with the inner surfaces of the first guide plate and the second guide plate in a penetrating way, and a heat exchange tank is fixedly arranged on the upper surface of the waste heat recovery tank. The energy-saving effect is good, and the pollution to the external environment is avoided.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to a waste heat utilization device and a using method thereof.
Background
The boiler is a heat exchange device which heats working media (generally evolved water) to certain parameters (temperature and pressure) by utilizing the heat energy of fuel or other energy sources. The task of the boiler is to safely, reliably, economically and effectively convert the chemical energy of the fuel into heat energy, and further transfer the heat energy to water to generate hot water or steam; or the chemical energy of the fuel is transferred to other working media, such as heat transfer oil, and the like, so as to generate other high-temperature working media, such as high-temperature heat transfer oil.
At present, the boiler need discharge out the flue gas of high temperature, directly discharges in the atmosphere and does not utilize, and is very unfortunately, contains a large amount of heat energy and pollutant particle in the flue gas, has not only polluted the environment, the waste of the resource that still exists simultaneously, therefore, we are to proposing a waste heat utilization method.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a waste heat utilization method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a waste heat utilization device comprises a boiler and a waste heat recovery box, wherein a hot flue gas outlet pipe is fixedly arranged at the bottom of the outer wall of one side of the boiler, a hot flue gas inlet pipe is fixedly arranged at the bottom of the outer wall of one side of the waste heat recovery box, which is close to the boiler, a second connecting pipe is arranged between the hot flue gas outlet pipe and the hot flue gas inlet pipe, a first guide plate is fixedly arranged on the vertical inner wall of one side of the waste heat recovery box, a second guide plate is fixedly arranged on the vertical inner wall of the other side of the waste heat recovery box, heat conducting rods are fixedly connected with the inner surfaces of the first guide plate and the second guide plate in a penetrating manner, a heat exchange box is fixedly arranged on the upper surface of the waste heat recovery box, a cold flue gas outlet pipe is fixedly arranged on the vertical outer wall of one side of the top of the waste heat recovery box, a flue gas discharge barrel is fixedly arranged at one, and the inner wall of the bottom of the heat exchange cavity is fixedly provided with a heat exchange tube.
Preferably, the quantity of first guide board is a plurality of, the quantity of second guide board is a plurality of, a plurality of first guide board and a plurality of the second guide board is vertical even interval distribution.
Preferably, the number of the heat conducting rods is a plurality of, the top of the heat conducting rods is fixedly connected with the heat exchange tube, the heat conducting rods and the heat exchange tube are made of copper, and the heat exchange tube is M-shaped.
Preferably, a water inlet pipe is fixedly installed at the top of the vertical outer wall at one side of the heat exchange box, and a water outlet pipe is fixedly installed at the top of the vertical outer wall at the other side of the heat exchange box.
Preferably, the waste heat recovery tank comprises a stainless steel inner shell and a stainless steel outer shell, the outer surface of the stainless steel outer shell is coated with a heat insulation coating, the inner surface of the stainless steel inner shell is coated with a corrosion-resistant coating, a heat preservation liner is fixedly connected between the stainless steel inner shell and the stainless steel outer shell, the heat insulation coating is a nano tungsten oxide coating, and the corrosion-resistant coating is an aluminum-based silicate ceramic coating.
Preferably, one end of the water outlet pipe, which is far away from the heat exchange box, is fixedly connected with a booster water pump, one end of the booster water pump, which is far away from the water outlet pipe, is fixedly connected with a hot water conveying pipe, and one end of the hot water conveying pipe, which is far away from the booster water pump, is fixedly connected with a waste heat recycling hot water tank.
Preferably, one side of a flue gas discharge cylinder is provided with a first connecting pipe fixedly connected with a cold flue gas outlet pipe, the other side of the flue gas discharge cylinder is provided with a clean gas outlet pipe, a flue gas filtering chamber is arranged inside the flue gas discharge cylinder, a first filtering plate, a second filtering plate and a third filtering plate are fixedly arranged on the inner surface of the flue gas filtering chamber, and the first filtering plate, the second filtering plate and the third filtering plate are all activated carbon filtering plates.
The use method of the waste heat utilization device comprises the following steps:
s1: the boiler is communicated with the waste heat recovery tank through a second connecting pipe, a plurality of first guide plates and a plurality of second guide plates which are uniformly distributed at intervals are respectively arranged on the inner wall of the waste heat recovery tank, the first guide plates and the second guide plates are connected in a penetrating manner by utilizing a plurality of heat conducting rods, and an S-shaped flue gas guide channel is formed in the waste heat recovery tank, so that hot flue gas can well flow in the waste heat recovery tank and can well exchange heat with the heat conducting rods;
s2: installing a heat exchange box on the waste heat recovery box, connecting the heat exchange tube of the heat exchange cavity inside the waste heat recovery box with the heat conduction rod in the step S, leading the heat of the hot flue gas to be conducted to the heat exchange tube by the heat conduction rod subjected to heat exchange in the step S1, and introducing cold water required by waste heat utilization into the heat exchange box to realize the purpose of converting the cold water into hot water;
s3: the corrosion-resistant coating is coated on the inner wall of the waste heat recovery box, so that the corrosion effect of hot flue gas on the interior of the waste heat recovery box can be greatly reduced, and meanwhile, the heat exchange between heat and the outside can be effectively reduced through the heat-insulating liner and the heat-insulating coating, so that the heat loss is greatly reduced;
s4: pumping out the hot water in the step S2 by using a booster water pump, and storing the hot water into a waste heat recycling hot water tank through a hot water conveying pipe, so as to realize the purpose of recycling the waste heat flue gas of the boiler;
s5: fixed mounting has first filter, second filter and third filter on the flue gas filter chamber in flue gas discharge tube, can carry out fine filtration with the flue gas after accomplishing the heat exchange in step S1, filters the harmful substance fine in the flue gas, then discharges to the external world through clean gas exit tube, can reduce the pollution to external environment, and environmental protection is effectual.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, by arranging the waste heat recovery tank, the first guide plate, the second guide plate, the heat conduction rod, the heat exchange tank, the cold flue gas outlet pipe, the flue gas exhaust cylinder, the heat exchange cavity, the heat exchange pipe, the water inlet pipe, the water outlet pipe, the booster water pump, the hot water conveying pipe and the waste heat recycling hot water tank, the purpose of utilizing waste heat of high-temperature flue gas of the boiler can be realized, the waste of heat energy is avoided, and the energy-saving effect is good;
2. according to the waste heat recovery box, the stainless steel inner shell, the stainless steel outer shell, the heat insulation coating, the corrosion-resistant coating and the heat preservation inner container are arranged, so that a good heat insulation and corrosion-resistant structure is added for the waste heat recovery box, the service life of the waste heat recovery box is prolonged, heat loss is greatly reduced, and the energy-saving effect is good;
3. according to the invention, the smoke filtering cavity, the first filtering plate, the second filtering plate, the third filtering plate and the purified gas outlet pipe are arranged, so that the purpose of purifying and filtering smoke can be realized, and the pollution to the external environment is avoided.
In conclusion, the waste heat utilization device can realize the purpose of utilizing the waste heat of the high-temperature flue gas of the boiler, avoids the waste of heat energy, has long service life and good energy-saving effect, and avoids the pollution to the external environment.
Drawings
Fig. 1 is a schematic structural diagram of a waste heat utilization device provided by the present invention;
FIG. 2 is a schematic view of the connection between the heat exchange tank and the waste heat recycling hot water tank of the waste heat utilization device according to the present invention;
fig. 3 is a schematic structural diagram of a waste heat recovery tank of a waste heat utilization device according to the present invention;
fig. 4 is a schematic structural view of a smoke discharge tube in a second embodiment of the waste heat utilization device provided by the present invention.
In the figure: 1 boiler, 2 waste heat recovery case, 3 hot flue gas exit tubes, 4 hot flue gas advances the pipe, 5 first guide board, 6 second guide boards, 7 heat conduction poles, 8 heat exchange case, 9 cold flue gas exit tubes, 10 flue gas exhaust section of thick bamboo, 11 heat transfer chamber, 12 heat exchange tubes, 13 inlet tubes, 14 outlet pipes, 15 stainless steel inner shells, 16 stainless steel outer shells, 17 thermal-insulated coating, 18 corrosion-resistant coating, 19 heat preservation inner bag, 20 flue gas filter chamber, 21 first filter, 22 second filter, 23 third filter, 24 net gas exit tubes, 25 first connecting pipes, 26 second connecting pipes, 27 booster pump, 28 hot water conveyer pipe, 29 waste heat retrieval and utilization hot water tanks.
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.
The first embodiment is as follows:
referring to fig. 1-3, a waste heat utilization device comprises a boiler 1 and a waste heat recovery tank 2, a hot flue gas outlet pipe 3 is fixedly installed at the bottom of the outer wall of one side of the boiler 1, a hot flue gas inlet pipe 4 is fixedly installed at the bottom of the outer wall of one side of the waste heat recovery tank 2 close to the boiler 1, a second connecting pipe 26 is arranged between the hot flue gas outlet pipe 3 and the hot flue gas inlet pipe 4, a first guide plate 5 is fixedly installed on the vertical inner wall of one side of the waste heat recovery tank 2, a second guide plate 6 is fixedly installed on the vertical inner wall of the other side of the waste heat recovery tank 2, heat conducting rods 7 are fixedly connected to the inner surfaces of the first guide plate 5 and the second guide plate 6 in a penetrating manner, a heat exchange tank 8 is fixedly installed on the upper surface of the waste heat recovery tank 2, a cold flue gas outlet pipe 9 is fixedly installed on the vertical outer wall of one side of the top of the waste, a heat exchange cavity 11 is formed in the heat exchange box 8, and a heat exchange tube 12 is fixedly mounted on the inner wall of the bottom of the heat exchange cavity 11.
Wherein, the quantity of first guide board 5 is a plurality of, and the quantity of second guide board 6 is a plurality of, and a plurality of first guide board 5 is vertical evenly spaced apart distribution with a plurality of second guide board 6.
The number of the heat conducting rods 7 is a plurality, the tops of the heat conducting rods 7 are fixedly connected with the heat exchange tubes 12, the heat conducting rods 7 and the heat exchange tubes 12 are made of copper, and the heat exchange tubes 12 are M-shaped.
Wherein, a water inlet pipe 13 is fixedly arranged at the top of the vertical outer wall at one side of the heat exchange box 8, and a water outlet pipe 14 is fixedly arranged at the top of the vertical outer wall at the other side of the heat exchange box 8.
The waste heat recovery tank 2 comprises a stainless steel inner shell 15 and a stainless steel outer shell 16, the outer surface of the stainless steel outer shell 16 is coated with a heat insulation coating 17, the inner surface of the stainless steel inner shell 15 is coated with a corrosion-resistant coating 18, a heat preservation liner 19 is fixedly connected between the stainless steel inner shell 15 and the stainless steel outer shell 16, the heat insulation coating 17 is a nano tungsten oxide coating, and the corrosion-resistant coating 18 is an aluminum-based silicate ceramic coating.
Wherein, the one end fixedly connected with booster pump 27 that the outlet pipe 14 keeps away from heat exchange box 8, the one end fixedly connected with hot water conveyer pipe 28 that the booster pump 27 kept away from outlet pipe 14, the one end fixedly connected with waste heat retrieval and utilization hot-water tank 29 that hot water conveyer pipe 28 kept away from booster pump 27.
The use method of the waste heat utilization device comprises the following steps:
s1: the boiler 1 is communicated with the waste heat recovery tank 2 through a second connecting pipe 26, a plurality of first guide plates 5 and a plurality of second guide plates 6 which are uniformly distributed at intervals are respectively arranged on the inner wall of the waste heat recovery tank 2, the first guide plates 5 and the second guide plates 6 are connected in a penetrating way by utilizing a plurality of heat conducting rods 7, S-shaped smoke guide channels are formed in the waste heat recovery tank 2, and then hot smoke can well flow in the waste heat recovery tank 2 and can well exchange heat with the heat conducting rods 7;
s2: installing a heat exchange box 8 on the waste heat recovery box 2, connecting the heat exchange tube 12 of the heat exchange cavity 11 inside the waste heat recovery box with the heat conduction rod 7 in the step S1, so that the heat of the hot flue gas is conducted to the heat exchange tube 12 by the heat conduction rod 7 subjected to heat exchange in the step S1, and introducing cold water required by waste heat utilization into the heat exchange box 8 to realize the purpose of converting the cold water into hot water;
s3: the corrosion-resistant coating 18 is coated on the inner wall of the waste heat recovery tank 2, so that the corrosion effect of hot flue gas on the interior of the waste heat recovery tank 2 can be greatly reduced, and meanwhile, the heat exchange between heat and the outside can be effectively reduced through the heat-insulating liner 19 and the heat-insulating coating 17, so that the heat loss is greatly reduced;
s4: the pressurized water pump 27 is used to pump out the hot water in step S2, and the hot water is stored in the waste heat recycling hot water tank 29 through the hot water delivery pipe 28, so as to achieve the purpose of recycling the waste heat flue gas of the boiler 1.
Example two:
referring to fig. 1-4, a waste heat utilization device comprises a boiler 1 and a waste heat recovery tank 2, a hot flue gas outlet pipe 3 is fixedly installed at the bottom of the outer wall of one side of the boiler 1, a hot flue gas inlet pipe 4 is fixedly installed at the bottom of the outer wall of one side of the waste heat recovery tank 2 close to the boiler 1, a second connecting pipe 26 is arranged between the hot flue gas outlet pipe 3 and the hot flue gas inlet pipe 4, a first guide plate 5 is fixedly installed on the vertical inner wall of one side of the waste heat recovery tank 2, a second guide plate 6 is fixedly installed on the vertical inner wall of the other side of the waste heat recovery tank 2, heat conducting rods 7 are fixedly connected to the inner surfaces of the first guide plate 5 and the second guide plate 6 in a penetrating manner, a heat exchange tank 8 is fixedly installed on the upper surface of the waste heat recovery tank 2, a cold flue gas outlet pipe 9 is fixedly installed on the vertical outer wall of one side of the top of the waste, a heat exchange cavity 11 is formed in the heat exchange box 8, and a heat exchange tube 12 is fixedly mounted on the inner wall of the bottom of the heat exchange cavity 11.
Wherein, the quantity of first guide board 5 is a plurality of, and the quantity of second guide board 6 is a plurality of, and a plurality of first guide board 5 is vertical evenly spaced apart distribution with a plurality of second guide board 6.
The number of the heat conducting rods 7 is a plurality, the tops of the heat conducting rods 7 are fixedly connected with the heat exchange tubes 12, the heat conducting rods 7 and the heat exchange tubes 12 are made of copper, and the heat exchange tubes 12 are M-shaped.
Wherein, a water inlet pipe 13 is fixedly arranged at the top of the vertical outer wall at one side of the heat exchange box 8, and a water outlet pipe 14 is fixedly arranged at the top of the vertical outer wall at the other side of the heat exchange box 8.
The waste heat recovery tank 2 comprises a stainless steel inner shell 15 and a stainless steel outer shell 16, the outer surface of the stainless steel outer shell 16 is coated with a heat insulation coating 17, the inner surface of the stainless steel inner shell 15 is coated with a corrosion-resistant coating 18, a heat preservation liner 19 is fixedly connected between the stainless steel inner shell 15 and the stainless steel outer shell 16, the heat insulation coating 17 is a nano tungsten oxide coating, and the corrosion-resistant coating 18 is an aluminum-based silicate ceramic coating.
Wherein, the one end fixedly connected with booster pump 27 that the outlet pipe 14 keeps away from heat exchange box 8, the one end fixedly connected with hot water conveyer pipe 28 that the booster pump 27 kept away from outlet pipe 14, the one end fixedly connected with waste heat retrieval and utilization hot-water tank 29 that hot water conveyer pipe 28 kept away from booster pump 27.
Wherein, one side of flue gas escape tube 10 is equipped with the first connecting pipe 25 with cold flue gas exit tube 9 fixed connection, and the opposite side of flue gas escape tube 10 is equipped with clean gas exit tube 24, and flue gas filter chamber 20 has been seted up to flue gas escape tube 10's inside, and flue gas filter chamber 20's internal fixed surface installs first filter 21, second filter 22 and third filter 23, and first filter 21, second filter 22 and third filter 23 are the active carbon filter.
The use method of the waste heat utilization device comprises the following steps:
s1: the boiler 1 is communicated with the waste heat recovery tank 2 through a second connecting pipe 26, a plurality of first guide plates 5 and a plurality of second guide plates 6 which are uniformly distributed at intervals are respectively arranged on the inner wall of the waste heat recovery tank 2, the first guide plates 5 and the second guide plates 6 are connected in a penetrating way by utilizing a plurality of heat conducting rods 7, S-shaped smoke guide channels are formed in the waste heat recovery tank 2, and then hot smoke can well flow in the waste heat recovery tank 2 and can well exchange heat with the heat conducting rods 7;
s2: installing a heat exchange box 8 on the waste heat recovery box 2, connecting the heat exchange tube 12 of the heat exchange cavity 11 inside the waste heat recovery box with the heat conduction rod 7 in the step S1, so that the heat of the hot flue gas is conducted to the heat exchange tube 12 by the heat conduction rod 7 subjected to heat exchange in the step S1, and introducing cold water required by waste heat utilization into the heat exchange box 8 to realize the purpose of converting the cold water into hot water;
s3: the corrosion-resistant coating 18 is coated on the inner wall of the waste heat recovery tank 2, so that the corrosion effect of hot flue gas on the interior of the waste heat recovery tank 2 can be greatly reduced, and meanwhile, the heat exchange between heat and the outside can be effectively reduced through the heat-insulating liner 19 and the heat-insulating coating 17, so that the heat loss is greatly reduced;
s4: the pressurized water pump 27 is used for pumping out the hot water in the step S2, and the hot water is stored in the waste heat recycling hot water tank 29 through the hot water conveying pipe 28, so as to achieve the purpose of recycling the waste heat flue gas of the boiler 1;
s5: the first filter plate 21, the second filter plate 22 and the third filter plate 23 are fixedly mounted on the smoke filtering cavity 20 in the smoke discharging barrel 10, smoke subjected to heat exchange in the step S1 can be well filtered, harmful substances in the smoke are well filtered, and then the smoke is discharged to the outside through the clean gas outlet pipe 24, so that pollution to the external environment can be reduced, and the environment-friendly effect is good.
The invention can realize the purpose of utilizing the waste heat of the high-temperature flue gas of the boiler 1, avoids the waste of heat energy, has long service life and good energy-saving effect, and avoids the pollution to the external environment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A waste heat utilization device comprises a boiler (1) and a waste heat recovery box (2), and is characterized in that a hot flue gas outlet pipe (3) is fixedly installed at the bottom of the outer wall of one side of the boiler (1), a hot flue gas inlet pipe (4) is fixedly installed at the bottom of the outer wall of one side of the waste heat recovery box (2) close to the boiler (1), a second connecting pipe (26) is arranged between the hot flue gas outlet pipe (3) and the hot flue gas inlet pipe (4), a first guide plate (5) is fixedly installed on the vertical inner wall of one side of the waste heat recovery box (2), a second guide plate (6) is fixedly installed on the vertical inner wall of the other side of the waste heat recovery box (2), a heat conducting rod (7) is fixedly connected with the inner surfaces of the first guide plate (5) and the second guide plate (6) in a penetrating manner, and a heat exchange box (8) is fixedly installed on the upper surface of the, the waste heat recovery device is characterized in that a cold flue gas outlet pipe (9) is fixedly mounted on the vertical outer wall of one side of the top of the waste heat recovery box (2), a flue gas discharging barrel (10) is fixedly mounted at one end, far away from the waste heat recovery box (2), of the cold flue gas outlet pipe (9), a heat exchange cavity (11) is formed in the heat exchange box (8), and a heat exchange pipe (12) is fixedly mounted on the inner wall of the bottom of the heat exchange cavity (11).
2. The waste heat utilization device according to claim 1, characterized in that the number of the first guide plates (5) is several, the number of the second guide plates (6) is several, and the several first guide plates (5) and the several second guide plates (6) are vertically and evenly distributed at intervals.
3. The waste heat utilization device according to claim 1, wherein the number of the heat conduction rods (7) is several, the tops of the heat conduction rods (7) are fixedly connected with the heat exchange tubes (12), the heat conduction rods (7) and the heat exchange tubes (12) are made of copper, and the heat exchange tubes (12) are M-shaped.
4. The waste heat utilization device according to claim 1, wherein a water inlet pipe (13) is fixedly mounted on the top of one vertical outer wall of the heat exchange box (8), and a water outlet pipe (14) is fixedly mounted on the top of the other vertical outer wall of the heat exchange box (8).
5. The waste heat utilization device according to claim 1, wherein the waste heat recovery tank (2) comprises a stainless steel inner shell (15) and a stainless steel outer shell (16), the outer surface of the stainless steel outer shell (16) is coated with a thermal insulation coating (17), the inner surface of the stainless steel inner shell (15) is coated with a corrosion-resistant coating (18), an insulation inner container (19) is fixedly connected between the stainless steel inner shell (15) and the stainless steel outer shell (16), the thermal insulation coating (17) is a nano tungsten oxide coating, and the corrosion-resistant coating (18) is an aluminum-based silicate ceramic coating.
6. The waste heat utilization device according to claim 4, wherein a booster water pump (27) is fixedly connected to one end of the water outlet pipe (14) far away from the heat exchange box (8), a hot water conveying pipe (28) is fixedly connected to one end of the booster water pump (27) far away from the water outlet pipe (14), and a waste heat recycling hot water tank (29) is fixedly connected to one end of the hot water conveying pipe (28) far away from the booster water pump (27).
7. The waste heat utilization device according to claim 1, wherein a first connecting pipe (25) fixedly connected with the cold flue gas outlet pipe (9) is arranged on one side of the flue gas discharging cylinder (10), a clean gas outlet pipe (24) is arranged on the other side of the flue gas discharging cylinder (10), a flue gas filtering chamber (20) is arranged inside the flue gas discharging cylinder (10), a first filtering plate (21), a second filtering plate (22) and a third filtering plate (23) are fixedly arranged on the inner surface of the flue gas filtering chamber (20), and the first filtering plate (21), the second filtering plate (22) and the third filtering plate (23) are all activated carbon filtering plates.
8. A method for using the waste heat utilization device of any one of claims 1 to 7, characterized by comprising the following steps:
s1: the boiler (1) is communicated with the waste heat recovery tank (2) through a second connecting pipe (26), a plurality of first guide plates (5) and a plurality of second guide plates (6) which are uniformly distributed at intervals are respectively arranged on the inner wall of the waste heat recovery tank (2), the first guide plates (5) and the second guide plates (6) are connected in a penetrating manner through a plurality of heat conducting rods (7), an S-shaped smoke guide channel is formed in the waste heat recovery tank (2), and then hot smoke can well flow in the waste heat recovery tank (2) and can well exchange heat with the heat conducting rods (7);
s2: installing a heat exchange box (8) on the waste heat recovery box (2), connecting a heat exchange pipe (12) of a heat exchange cavity (11) inside the waste heat recovery box with the heat conduction rod (7) in the step S1, leading the heat of the hot flue gas to be conducted to the heat exchange pipe (12) by the heat conduction rod (7) subjected to heat exchange in the step S1, and leading cold water required by waste heat utilization into the heat exchange box (8) to realize the purpose of converting the cold water into hot water;
s3: the corrosion-resistant coating (18) is coated on the inner wall of the waste heat recovery box (2), so that the corrosion effect of hot flue gas on the interior of the waste heat recovery box (2) can be greatly reduced, and meanwhile, the heat exchange between heat and the outside can be effectively reduced through the heat-insulating liner (19) and the heat-insulating coating (17), so that the heat loss is greatly reduced;
s4: hot water in the step S2 is pumped out by a booster water pump (27), and the hot water is stored in a waste heat recycling hot water tank (29) through a hot water conveying pipe (28), so that the purpose of recycling waste heat and smoke of the boiler (1) is realized;
s5: fixed mounting has first filter (21), second filter (22) and third filter (23) on flue gas filter chamber (20) in flue gas exhaust section of thick bamboo (10), can carry out fine filtration with the flue gas after accomplishing the heat exchange in step S1, filters the harmful substance fine in the flue gas, then discharges to the external world through clean gas exit tube (24), can reduce the pollution to external environment, and environmental protection is effectual.
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| CN201911337215.1A CN111043619A (en) | 2019-12-23 | 2019-12-23 | Waste heat utilization device and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911337215.1A CN111043619A (en) | 2019-12-23 | 2019-12-23 | Waste heat utilization device and use method |
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| CN111043619A true CN111043619A (en) | 2020-04-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028870A (en) * | 2021-03-03 | 2021-06-25 | 东营职业学院 | Heat recovery equipment for petrochemical industry |
| CN114294968A (en) * | 2022-01-10 | 2022-04-08 | 江西联达白源冶金有限公司 | Metallurgical processing waste heat recycling device |
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| CN114294968A (en) * | 2022-01-10 | 2022-04-08 | 江西联达白源冶金有限公司 | Metallurgical processing waste heat recycling device |
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Application publication date: 20200421 |