CN111947122B - Energy-efficient waste heat recovery system of hierarchical utilization - Google Patents
Energy-efficient waste heat recovery system of hierarchical utilization Download PDFInfo
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- CN111947122B CN111947122B CN202010764056.XA CN202010764056A CN111947122B CN 111947122 B CN111947122 B CN 111947122B CN 202010764056 A CN202010764056 A CN 202010764056A CN 111947122 B CN111947122 B CN 111947122B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
- F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
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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
- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
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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
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
- F23J2217/102—Intercepting solids by filters electrostatic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses an efficient and energy-saving waste heat recovery system capable of utilizing in a grading manner, which comprises a mounting frame, a filter box and a steam furnace, wherein the mounting frame is fixed on the ground, a chimney, a first connecting pipe, a second connecting pipe and a third connecting pipe are sequentially arranged on the mounting frame from left to right, the first connecting pipe, the second connecting pipe and the third connecting pipe are sequentially and hermetically connected, an air inlet pipe is arranged at the upper end of the chimney, and an ash discharge pipe is arranged at the lower end of the chimney. The invention increases the utilization efficiency of the system to the waste heat of the flue gas by utilizing the flue gas at high temperature, medium temperature and low temperature in a grading way, reduces the heat loss and improves the combustion efficiency by the dedusting and refluxing of the filter box, further increases the utilization efficiency of the system to the waste heat of the flue gas and reduces the pollution of smoke dust emission.
Description
Technical Field
The invention relates to the technical field of waste heat utilization, in particular to a high-efficiency and energy-saving waste heat recovery system for graded utilization.
Background
Can output higher temperature's flue gas in the boiler use, the direct emission of flue gas both makes particulate matter sharply increase in the air, also makes air temperature sharply increase, causes great air pollution, consequently needs to discharge flue gas cooling and dust removal back, and flue gas temperature's cooling utilizes and helps the mill energy-conservation.
The existing waste heat recovery system usually heats water for heating or evaporates water into steam for power generation through a waste heat boiler, and the temperature in the flue gas can not be effectively utilized through one-time utilization, so that the discharged flue gas still has higher temperature and contains more smoke dust.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, the single utilization efficiency is low, and smoke dust in smoke cannot be reduced in the waste heat utilization process, and provides a waste heat recovery system capable of utilizing in a grading manner and efficient in energy conservation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the efficient and energy-saving waste heat recovery system comprises an installation frame, a filter box and a steam furnace which are fixed on the ground, wherein a chimney, a first connecting pipe, a second connecting pipe and a third connecting pipe are sequentially installed on the installation frame from left to right, the first connecting pipe, the second connecting pipe and the third connecting pipe are sequentially connected in a sealing manner, an air inlet pipe is installed at the upper end of the chimney, an ash discharge pipe is installed at the lower end of the chimney, the first connecting pipe is installed on the side wall of the ash discharge pipe, a plurality of series-connected temperature difference power generation sheets are installed on the side wall of the chimney, a direct current electrostatic generator is installed at the upper end of the first connecting pipe, a plurality of temperature difference power generation sheets are electrically connected with the direct current electrostatic generator, two electrostatic dust collection plates are symmetrically embedded in the inner wall of the first connecting pipe, two corona rods are inserted in the inner side wall of the first connecting pipe, a plurality of dust collection holes are formed in each electrostatic dust collection plate, a dust collection cover is arranged on the outer wall of the first connecting pipe, and a dust collection pipe is installed at the lower end of the dust collection cover;
the dust removal device comprises a filter box, a steam furnace, a first connecting pipe, a second connecting pipe, a dust removal pipe, a steam furnace, a throttling valve, a water inlet pipe, a steam pipe, a fixing plate, a spiral heat pipe and a spiral heat pipe, wherein the filter element is arranged in the middle of the inner wall of the filter box, a return pipe and a blow-off pipe are respectively arranged on the side wall of the filter box, the lower end of the dust removal pipe extends to the lower part of the filter element, a partition plate is arranged between the steam furnace and the second connecting pipe, a plurality of superconducting heat pipes are arranged in the steam furnace, the upper ends of the superconducting heat pipes extend into the second connecting pipe, the dust removal pipe is arranged on the steam furnace, the other end of the dust removal pipe is arranged on the filter box, the throttling valve is arranged on the dust removal pipe, the steam furnace is respectively provided with a water inlet pipe and a steam pipe, the lower end of the third connecting pipe is provided with the fixing plate, the spiral heat pipe is arranged in the third connecting pipe, the spiral heat pipe comprises a water inlet end and a water outlet end, and a water inlet end and a water outlet end both extend to the lower end of the fixing plate;
the plurality of series-connected temperature difference power generation pieces generate electric energy through the temperature difference between the inside and the outside of the chimney, and the electric energy is output to the direct current electrostatic generator for dust removal after being connected in series and pressurized, so that extra electric power input is not required, and the utilization rate of system waste heat is increased;
smoke dust on the electrostatic dust collecting plate is discharged into the dust removing cover through the dust removing holes by the aid of the smoke pressure in the first connecting pipe, the electrostatic dust collecting plate does not need to be cleaned manually, and working efficiency of the system is improved;
the medium-temperature flue gas in the second connecting pipe is used for heating water through the steam boiler and the superconducting heat pipe to generate steam for utilization, so that the utilization rate of the system on waste heat is further increased;
the low-temperature flue gas in the third connecting pipe heats cold water flowing through the spiral heat pipe, so that the utilization rate of the system on waste heat is further increased;
the throttle valve can effectively control the discharge of steam and reduce the loss of the steam.
Preferably, the dc electrostatic generator is electrically connected to the two electrostatic collecting plates and the two corona rods, respectively, and the two corona rods are located between the two electrostatic collecting plates;
the direct current electrostatic generator makes the smoke and dust in the flue gas electrified through the discharge of corona rod, then adsorbs the surface of electrostatic precipitator board with the smoke and dust through electrostatic precipitator board, and the smoke and dust in the flue gas of getting rid of reduces and discharges the pollution for the exhaust hot-air is cleaner gas.
Preferably, the return pipe is positioned above the filter element, and the sewage discharge pipe is positioned at the lowest part of the side wall of the filter box;
the return pipe can be with in the leading-in furnace of boiler of hotter dustless air, maintain higher temperature in the boiler for the fuel can ignite fast and make the heat loss of fuel reduce, increases the thermal efficiency of boiler, has improved the utilization ratio of system's waste heat promptly.
Preferably, the dust falling pipe is positioned below the filter element and higher than the lower end of the dust removing pipe;
the dust fall pipe is through discharging the steam of steam boiler output to the rose box in, steam and the gaseous collision of dust removal pipe exhaust dust-laden in the rose box have detached the smoke and dust for gas that gets into in the furnace from the back flow is clean gas, avoids influencing combustion efficiency.
The invention has the following beneficial effects:
1. the thermoelectric generation piece through a plurality of series connections carries out the one-level utilization to the gas temperature, produces the electric energy and supplies direct current electrostatic generator to use, carries out the second grade through steam boiler and superconductive heat pipe to the gas temperature and utilizes, produces high temperature steam and uses, carries out tertiary utilization to the gas temperature through spiral heat pipe, and the rivers in the spiral heat pipe are flowed through in the heating, effectively utilizes through a lot of to the gas temperature, does not waste the heat in the flue gas, increases system waste heat utilization's efficiency.
2. Make the smoke and dust on the electrostatic precipitator board blow in the dust excluding hood fast through the dust removal hole through the pressure of flue gas in first connecting tube, need not the smoke and dust on the manual cleaning electrostatic precipitator board, reduce the labour, and can increase the utilization ratio of system to the flue gas.
3. The clean high-temperature flue gas is returned to the hearth through the return pipe, the temperature of the hearth is maintained, the heat loss is reduced, and the dust-containing flue gas blown out from the dust hood in the dust removal pipe is filtered through the filter box and the filter element, so that less smoke dust is contained in the flue gas, insufficient combustion caused by excessive smoke dust content in the flue gas is avoided, and the utilization rate of the system to the flue gas waste heat is further increased.
4. Steam boiler passes through superconducting heat pipe heat conduction and produces steam, and steam lets in the rose box through the dust fall pipe in, and the dust-laden flue gas in the rose box further filters under the washing away of steam, increases the cleanliness factor of backward flow flue gas, and the discharge of choke valve on the dust fall pipe can effective control steam, reduces the loss of steam, has increased the utilization ratio of system to the flue gas waste heat.
In conclusion, the invention increases the utilization efficiency of the system on the waste heat of the flue gas by utilizing the flue gas at high temperature, medium temperature and low temperature in a grading way, reduces the heat loss and improves the combustion efficiency by the dedusting and refluxing of the filter box, further increases the utilization efficiency of the system on the waste heat of the flue gas and reduces the pollution of smoke dust emission.
Drawings
FIG. 1 is a schematic structural diagram of a high-efficiency energy-saving waste heat recovery system with hierarchical utilization according to the present invention;
FIG. 2 is an enlarged view of a part of a filter box of the high-efficiency energy-saving waste heat recovery system for classified utilization, which is provided by the invention;
fig. 3 is an enlarged view of a portion of an electrostatic dust collecting plate of the waste heat recovery system with high efficiency and energy saving in a grading manner.
In the figure: the device comprises a mounting frame 1, a chimney 2, an air inlet pipe 21, an ash discharge pipe 22, a temperature difference power generation sheet 201, a first connecting pipe 3, a dust removal cover 31, a dust removal pipe 311, an electrostatic dust collection plate 32, a dust removal hole 321, a corona rod 33, a direct current electrostatic generator 301, a second connecting pipe 4, a separation plate 41, a third connecting pipe 5, a fixing plate 51, a filter box 6, a return pipe 61, a sewage discharge pipe 62, a filter element 63, a steam oven 7, a water inlet pipe 71, a steam pipe 72, a dust removal pipe 73, a throttle valve 731, a superconductive heat pipe 701, a spiral heat pipe 8, a water inlet end 81 and a water outlet end 82.
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.
Referring to fig. 1-3, a high-efficiency energy-saving waste heat recovery system utilizing in stages comprises an installation frame 1 fixed on the ground, a filter box 6 and a steam oven 7, wherein a chimney 2, a first connection pipe 3, a second connection pipe 4 and a third connection pipe 5 are sequentially installed on the installation frame 1 from left to right, the first connection pipe 3, the second connection pipe 4 and the third connection pipe 5 are sequentially and hermetically connected, an air inlet pipe 21 is installed at the upper end of the chimney 2, an ash discharge pipe 22 is installed at the lower end of the chimney 2, the first connection pipe 3 is installed on the side wall of the ash discharge pipe 22, a plurality of thermoelectric generation sheets 201 connected in series are installed on the side wall of the chimney 2, a direct current electrostatic generator 301 is installed at the upper end of the first connection pipe 3, the plurality of thermoelectric generation sheets 201 are electrically connected with the direct current electrostatic generator 301, two electrostatic collection plates 32 are symmetrically embedded on the inner wall of the first connection pipe 3, two corona rods 33 are inserted on the inner side wall of the first connection pipe 3, a plurality of dust collection holes 321 are formed in each electrostatic collection plate 32, a dust collection cover 31 is arranged on the outer wall of the first connection pipe 3, and a dust collection pipe 31 is installed on the lower end of the dust collection pipe 311;
a filter element 63 is installed in the middle of the inner wall of the filter box 6, a return pipe 61 and a sewage discharge pipe 62 are installed on the side wall of the filter box 6 respectively, the lower end of a dust removal pipe 311 extends to the lower side of the filter element 63, a partition plate 41 is installed between the steam oven 7 and the second connecting pipe 4, a plurality of superconducting heat pipes 701 are installed in the steam oven 7, the upper ends of the superconducting heat pipes 701 extend into the second connecting pipe 4, a dust removal pipe 73 is installed on the steam oven 7, the other end of the dust removal pipe 73 is installed on the filter box 6, a throttle valve 731 is installed on the dust removal pipe 73, a water inlet pipe 71 and a steam pipe 72 are installed on the steam oven 7 respectively, a fixing plate 51 is installed at the lower end of the third connecting pipe 5, a spiral heat pipe 8 is installed in the third connecting pipe 5, the spiral heat pipe 8 comprises a water inlet end 81 and a water outlet end 82, and both the water inlet end 81 and the water outlet end 82 extend to the lower end of the fixing plate 51;
the plurality of series-connected thermoelectric generation pieces 201 generate electric energy through the temperature difference between the inside and the outside of the chimney 2, and the electric energy is output to the direct current electrostatic generator 301 for dust removal after being connected in series and pressurized, so that extra electric power input is not required, and the utilization rate of system waste heat is increased;
the smoke pressure in the first connecting pipe 3 enables the smoke on the electrostatic dust collecting plate 32 to be discharged into the dust removing cover 31 through the dust removing holes 321, manual cleaning of the electrostatic dust collecting plate 32 is not needed, and the working efficiency of the system is improved;
the medium-temperature flue gas in the second connecting pipe 4 is heated by the steam boiler 7 and the superconducting heat pipe 701 to generate steam for utilization, so that the utilization rate of the system on waste heat is further increased;
the low-temperature flue gas in the third connecting pipe 5 heats cold water flowing through the spiral heat pipe 8, and the utilization rate of the system on waste heat is further increased;
the throttle valve 731 can effectively control the discharge of steam, reducing the loss of steam.
The dc electrostatic generator 301 is electrically connected to the two electrostatic dust collecting plates 32 and the two corona rods 33, respectively, and the two corona rods 33 are located between the two electrostatic dust collecting plates 32;
the direct current electrostatic generator 301 makes the smoke and dust in the flue gas electrified through the discharge of corona rod 33, then adsorbs the surface of electrostatic precipitator board 32 with the smoke and dust through electrostatic precipitator board 32, and the smoke and dust in the flue gas of getting rid of reduces and discharges the pollution for the exhaust hot-air is cleaner gas.
The return pipe 61 is positioned above the filter element 63, and the drain pipe 62 is positioned at the lowest part of the side wall of the filter box 6;
the return pipe 61 can guide hot dust-free air into the furnace of the boiler, maintain high temperature in the boiler, enable the fuel to be ignited quickly, reduce heat loss of the fuel, increase heat efficiency of the boiler, and improve utilization rate of system waste heat.
The dust falling pipe 73 is positioned below the filter element 63 and is higher than the lower end of the dust removing pipe 311;
When the high-temperature dust-containing flue gas heat recovery device is used, high-temperature dust-containing flue gas enters from the air inlet pipe 21 and then passes through the chimney 2, when the chimney 2 is used, electric energy is generated through the plurality of temperature difference power generation sheets 201 connected in series and is supplied to the direct-current electrostatic generator 301, partial heat of the high-temperature dust-containing flue gas is converted into the electric energy for use, and the electric energy is discharged from the first connecting pipe 3 after the ash is preliminarily discharged from the ash discharge pipe 22;
the medium-temperature dusty flue gas entering the first connecting pipe 3 is ionized by the direct current electrostatic generator 301 through the corona rod 33 to be charged, then the charged flue gas is adsorbed on the surface through the electrostatic dust collecting plate 32, the pressure of the medium-temperature flue gas blows the flue gas attached to the electrostatic dust collecting plate 32 into the dust hood 31 from the dust removing hole 321, then the flue gas flows into the filter box 6 through the dust removing pipe 311, the dusty medium-temperature flue gas is filtered by the filter element 63 and then is discharged into a furnace chamber (the existing flue gas generating structure is not shown) from the return pipe 61, the high temperature in the furnace chamber is maintained, the heat loss of the fuel is reduced, the combustion efficiency is increased, namely, the waste heat utilization rate of the system is increased;
the medium-temperature dust-free flue gas is subjected to heat exchange by the superconducting heat pipe 701 through the second connecting pipe 4, so that steam is heated in the steam furnace 7 to be utilized, the utilization rate of waste heat is further increased, part of the steam enters the filter box 6 through the dust falling pipe 73, the throttle valve 731 controls the steam flow in the dust falling pipe 73, the use amount of the steam is saved, the steam settles the smoke dust in the dust-containing flue gas in the filter box 6 and is discharged along with the sewage discharge pipe 62, the temperature of the dust-containing flue gas is prevented from being reduced by the high-temperature steam, the filtered effect of the dust-containing flue gas is increased, and the utilization rate of the waste heat by the system is further increased;
in the low temperature flue gas after the heat transfer of second connecting pipe 4 got into third connecting pipe 5, cold water flowed to play water end 82 from intaking 81, and the cold water heating that the low temperature flue gas will flow through in the spiral heat pipe 8 through the heat transfer uses, further increases the utilization ratio of system to the waste heat, and the low temperature flue gas passes through to discharge after the heat transfer third connecting pipe 5 accords with low temperature low dust emission standard, reduces the pollution of system to the 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 (2)
1. An efficient and energy-saving waste heat recovery system for graded utilization comprises a mounting rack (1) fixed on the ground, a filter box (6) and a steam boiler (7), it is characterized in that a chimney (2), a first connecting pipe (3), a second connecting pipe (4) and a third connecting pipe (5) are sequentially arranged on the mounting rack (1) from left to right, the first connecting pipe (3), the second connecting pipe (4) and the third connecting pipe (5) are sequentially connected in a sealing way, the lower end of the chimney (2) is provided with an ash discharge pipe (22), the first connecting pipe (3) is arranged on the side wall of the ash discharge pipe (22), a plurality of thermoelectric generation pieces (201) which are connected in series are arranged on the side wall of the chimney (2), the upper end of the first connecting pipe (3) is provided with a direct current electrostatic generator (301), and the plurality of thermoelectric generation pieces (201) are electrically connected with the direct current electrostatic generator (301), two electrostatic dust collecting plates (32) are symmetrically embedded on the inner wall of the first connecting pipe (3), two corona rods (33) are inserted on the inner side wall of the first connecting pipe (3), a plurality of dust removing holes (321) are formed on each electrostatic dust collecting plate (32), a dust hood (31) is covered on the outer wall of the first connecting pipe (3), the lower end of the dust removing cover (31) is provided with a dust removing pipe (311);
the utility model discloses a dust-settling device, including rose box (6), filter core (63) is installed to the inner wall mid-mounting of rose box (6), install back flow (61) and blow off pipe (62) on the lateral wall of rose box (6) respectively, back flow (61) can be with the leading-in furnace to the boiler in, the lower extreme of dust removal pipe (311) extends to the below of filter core (63), install division board (41) between steam boiler (7) and second connecting pipe (4), install a plurality of superconductive heat pipes (701) in steam boiler (7), and the upper end of a plurality of superconductive heat pipes (701) extends to in second connecting pipe (4), install dust-settling pipe (73) on steam boiler (7), and install on rose box (6) the other end of dust-settling pipe (73), install choke valve (731) on dust-settling pipe (73), fixed plate (51) is installed to the lower extreme of third connecting pipe (5), install spiral heat pipe (8) in third connecting pipe (5), spiral heat pipe (8) are including intake end (81) and outlet end (82), and intake end (81) and all extend to the lower extreme of filter core (82) and the lower extreme of filter core (61) is located the fixed plate (51), filter core (61), the lower extreme of filter core (61) is located the lower extreme of dust-settling pipe (61), the dust falling pipe (73) is positioned below the filter element (63) and is higher than the lower end of the dust removing pipe (311); the medium-temperature dust-containing smoke entering the first connecting pipe (3), the smoke is ionized by the corona rod (33) through the direct current electrostatic generator (301) to be charged, then the charged smoke is adsorbed on the surface through the electrostatic dust collecting plate (32), the smoke attached to the electrostatic dust collecting plate (32) is blown into the dust removing cover (31) from the dust removing holes (321) by the pressure of the medium-temperature smoke, then the smoke flows into the filter box (6) through the dust removing pipe (311) along with the smoke, and the medium-temperature dust-containing smoke is filtered by the filter element (63) and then is discharged to a hearth from the return pipe (61); the medium-temperature dustless flue gas is subjected to heat exchange by the superconducting heat pipe (701) through the second connecting pipe (4), so that water in the steam boiler (7) is heated to generate steam, part of the steam enters the filter box (6) through the dust falling pipe (73), and the steam settles the smoke dust in the dusty flue gas in the filter box (6) and is discharged along with the blow-off pipe (62).
2. The system for recycling waste heat with high efficiency and energy saving in a grading manner according to claim 1, wherein the DC electrostatic generator (301) is electrically connected with two electrostatic dust collecting plates (32) and two corona rods (33), respectively, and the two corona rods (33) are located between the two electrostatic dust collecting plates (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010764056.XA CN111947122B (en) | 2020-08-01 | 2020-08-01 | Energy-efficient waste heat recovery system of hierarchical utilization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010764056.XA CN111947122B (en) | 2020-08-01 | 2020-08-01 | Energy-efficient waste heat recovery system of hierarchical utilization |
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| CN111947122A CN111947122A (en) | 2020-11-17 |
| CN111947122B true CN111947122B (en) | 2022-10-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072641A (en) * | 2010-12-22 | 2011-05-25 | 中国科学院广州能源研究所 | Generating system using surface residual heat of dry cement rotary kiln |
| CN104638979A (en) * | 2013-11-13 | 2015-05-20 | 西安上尚机电有限公司 | Waste heat power generation device of rotary cement kiln body |
| CN103604116A (en) * | 2013-11-22 | 2014-02-26 | 张建存 | Device and method for reducing oxynitrides smoke product of circulating fluidized bed boiler |
| CN106480251A (en) * | 2015-09-01 | 2017-03-08 | 丁玉峰 | A kind of heat storage type converter exhaust heat recovering method and device |
| CN107774453A (en) * | 2016-08-25 | 2018-03-09 | 宁波方太厨具有限公司 | A kind of collecting plate |
| CN206469712U (en) * | 2016-12-22 | 2017-09-05 | 江西省瑞金化工机械有限责任公司 | A kind of energy-conservation smoke evacuation system of mineral hot furnace |
| CN207170010U (en) * | 2017-09-25 | 2018-04-03 | 云南曲靖呈钢钢铁（集团）有限公司 | A kind of pneumatic steelmaking electrostatic precipitation system |
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