CN113587086A - Boiler combustion box waste heat recovery device and recovery method - Google Patents
Boiler combustion box waste heat recovery device and recovery method Download PDFInfo
- Publication number
- CN113587086A CN113587086A CN202110846896.5A CN202110846896A CN113587086A CN 113587086 A CN113587086 A CN 113587086A CN 202110846896 A CN202110846896 A CN 202110846896A CN 113587086 A CN113587086 A CN 113587086A
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- recovery
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- 238000011084 recovery Methods 0.000 title claims abstract description 100
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 62
- 239000002918 waste heat Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 230000000903 blocking effect Effects 0.000 claims abstract description 20
- 238000003780 insertion Methods 0.000 claims description 20
- 230000037431 insertion Effects 0.000 claims description 20
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000010992 reflux Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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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
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
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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 discloses a waste heat recovery device for a boiler combustion box, which comprises a bracket, a boiler arranged on the bracket and a combustion box used for heating the boiler, wherein a heat conduction pipe is arranged on one side of the boiler close to the combustion box, one end of the heat conduction pipe far away from the boiler is communicated with the combustion box, the waste heat recovery device also comprises a recovery component, the recovery component comprises a heating furnace and a recovery pipe, one end of the recovery pipe is communicated with the combustion box, the other end of the recovery pipe is connected with the heating furnace, and a blocking component used for blocking the heat conduction pipe and the recovery pipe is arranged on the top wall of the combustion box. According to the waste heat recovery device for the boiler combustion box, the heat conduction pipe and the recovery pipe are convenient to open and close through the plugging component, so that the heating furnace is convenient to utilize waste heat in the combustion box, and waste of resources is reduced.
Description
Technical Field
The invention relates to the field of fuel equipment, in particular to a boiler combustion box waste heat recovery device and a recovery method.
Background
The air in the wind chamber is used to blow the glowing material layer on the fixed grate or the chain grate into a boiling state, so that the glowing material layer and coal particles roll up and down together to burn.
In the related technology, when a boiler is heated, a blast cap is inserted and embedded in a blast hole of a grate, then an air blower blows air into a boiler layer from the blast hole, stirring and mixing of coal particles and air in the boiler layer are particularly strong, a burning material layer in a boiling state is as high as 1-1.5 m, if limestone is added into the boiling layer, sulfur in fuel can be fully removed through violent stirring, low-temperature corrosion can be avoided, and environmental pollution can be reduced.
In view of the above-mentioned related technologies, the inventor believes that after the boiler is heated, the residual heat will be lost with time due to the residual heat in the boiler layer, which results in waste of resources.
Disclosure of Invention
The invention provides a waste heat recovery device and a waste heat recovery method for a boiler combustion box, which are used for facilitating utilization of residual heat in a boiler layer.
In a first aspect, the invention provides a waste heat recovery device for a boiler combustion box, which adopts the following technical scheme:
the utility model provides a boiler combustion box waste heat recovery device, includes the support, is located boiler on the support and be used for right the burning case of boiler heating, the boiler is close to burning case one side is provided with the heat pipe, the heat pipe is kept away from boiler one end with burning case intercommunication still includes the recovery component, the recovery component includes heating furnace and recovery tube, recovery tube one end with burning case intercommunication, the other end with the heating furnace is connected, it is right to be provided with on the roof of burning case be used for heat pipe and recovery tube carry out the shutoff component of shutoff.
By adopting the technical scheme, when the waste heat in the combustion box is utilized, the plugging member is adjusted to plug the heat conduction pipe, meanwhile, the recovery pipe is communicated with the combustion box, so that the waste heat in the combustion box heats the heating furnace through the recovery pipe, and the waste heat in the combustion box is utilized; the boiler combustion box waste heat recovery device of design through the shutoff component, is convenient for open and the shutoff heat pipe and recovery tube, and then the waste of the waste heat of the heating furnace in to the combustion box of being convenient for utilizes, reduces the resource.
Optionally, the shutoff component includes mount, two jam, two connecting rods and drive the drive assembly of connecting rod motion, two the jam respectively with heat pipe and recovery tube are pegged graft, connecting rod one end with the jam is articulated, drive assembly is located on the mount, the mount is located on the roof of burning box, all seted up the confession on heat pipe and the recovery tube the jack that the jam was pegged graft.
Through adopting above-mentioned technical scheme, when carrying out the shutoff to the heat pipe, adjust drive assembly, drive assembly drives one of them connecting rod motion, and the connecting rod drives the jam motion, makes the jam get into the heat pipe through the jack, carries out the shutoff to the heat pipe, prevents the heat energy in the burning box to the boiler heating, and simultaneously, another connecting rod drives the jam motion, makes the jam through jack motion to recovery tube and burning box intercommunication, and then realizes utilizing the waste heat in the burning box, improves the utilization ratio of fuel.
Optionally, the driving assembly comprises three rotating shafts and four rotating handles, wherein one end of each rotating shaft is rotatably connected with the fixing frame, the other end of each rotating shaft is connected with one of the rotating handles, the two ends of each rotating shaft are connected with the corresponding rotating handle, the rotating handles are far away from one side of each rotating shaft and hinged to the connecting rods, each connecting rod is far away from the corresponding rotating handle, one side of each rotating shaft is hinged to one side of each rotating shaft, and the two connecting rods are respectively located on two sides of each rotating shaft.
Through adopting above-mentioned technical scheme, when the jam needs the motion, rotate the pivot, the pivot drives the turning handle and rotates, and the turning handle drives the connecting rod and rotates, and the connecting rod drives the jam motion, and then realizes the shutoff and the intercommunication of heat pipe and recovery tube, and the shutoff of the heat pipe of being convenient for and the intercommunication of recovery tube go on in step, reduce scattering and disappearing of heat energy.
Optionally, the plug comprises an insertion section and a blocking section, the cross-sectional area of the insertion section is larger than that of the blocking section, and the blocking section is hinged to the connecting rod.
Through adopting above-mentioned technical scheme, the segmentation of jam sets up, and the jam of being convenient for carries out the shutoff at the embedding of heat pipe and recovery tube, and then realizes carrying out the shutoff to heat pipe and recovery tube, simultaneously, reduces the jam and passes through the possibility that spliced eye and heat pipe and recovery tube break away from, and then improves the sealing performance of heat pipe and recovery tube.
Optionally, an embedded groove for embedding the inserting section is formed in the inner wall of one side, away from each other, of the heat conduction pipe and the recovery pipe, and the embedded groove is communicated with the inserting hole.
Through adopting above-mentioned technical scheme, the setting of caulking groove, the zonulae occludens of the section of being convenient for of pegging graft and heat pipe and recovery tube, and then improves the sealing performance of jam to heat pipe and recovery tube, and then improves the security of boiler and heating furnace.
Optionally, a groove for embedding the insertion section is formed in the inner wall of one side, close to each other, of the heat conduction pipe and the recovery pipe, and the groove is communicated with the insertion hole.
Through adopting above-mentioned technical scheme, the setting of recess, when being convenient for heat pipe and recovery tube intercommunication, the embedding of grafting section, and then improve the sealed of grafting section to heat pipe and recovery tube, reduce thermal scattering and disappearing, and then reduce the waste of resource.
Optionally, at least one spring pin is arranged on the side wall of the insertion section, at least two fixing holes are formed in the heat conduction pipe and the recovery pipe, and the fixing holes are communicated with the caulking groove and the groove.
Through adopting above-mentioned technical scheme, the setting of spring catch and fixed orifices improves the stability of blockking up with being connected of heat pipe and recovery tube, reduces the influence of pressure difference to the jam.
Optionally, a backflow component is arranged on the heating furnace, the backflow component comprises a backflow pipe and a pressure pump, one end of the backflow pipe is communicated with the heating furnace, the other end of the backflow pipe is communicated with the boiler, and the pressure pump is located on the backflow pipe.
Through adopting above-mentioned technical scheme, the setting of backward flow component is convenient for carry the hot water in the boiler through the force pump for hot water pours into the boiler into through the back flow into in, and then it is long when reducing the heating of boiler, improves the heating efficiency of boiler.
In a second aspect, the invention provides a method for recovering waste heat of a boiler combustion box, which comprises the following steps: the heat pipe is blocked through the blocking component, heat in the combustion box is prevented from heating the boiler through the heat pipe, then the recovery pipe is communicated with the combustion box, waste heat in the combustion box is heated to the heating furnace through the recovery pipe, and utilization of the waste heat in the combustion box is achieved.
Through adopting above-mentioned technical scheme, carry out the shutoff through the shutoff subassembly to the heat pipe, the heat passes through the heat pipe and heats the boiler in the prevention burning box, then with recovery tube and burning box intercommunication for the waste heat in the burning box passes through the recovery tube and heats the heating furnace, realizes reducing scattering and disappearing of waste heat to the utilization of burning box waste heat, and then improves the utilization ratio of resource.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the designed waste heat recovery device for the boiler combustion box is convenient for opening and plugging the heat conduction pipe and the recovery pipe through the plugging member, so that the heating furnace is convenient for utilizing waste heat in the combustion box, and the waste of resources is reduced;
2. the blocking is arranged in sections, so that the blocking can be conveniently embedded into the heat conduction pipe and the recovery pipe, the heat conduction pipe and the recovery pipe can be blocked, meanwhile, the possibility that the blocking is separated from the heat conduction pipe and the recovery pipe through the inserting holes is reduced, and the sealing performance of the heat conduction pipe and the recovery pipe is improved;
3. the setting of spring catch and fixed orifices improves the stability of blockking up and being connected with heat pipe and recovery tube, reduces the influence of pressure intensity difference to blockking up.
Drawings
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Fig. 3 is a cross-sectional view of an embodiment of the present invention.
Fig. 4 is an enlarged view of a portion B of fig. 3.
Description of reference numerals: 1. a support; 2. a boiler; 3. a combustion box; 4. a heat conducting pipe; 41. a jack; 42. caulking grooves; 43. a groove; 44. a fixing hole; 5. a recovery member; 51. heating furnace; 52. a recovery pipe; 6. a blocking member; 61. a fixed mount; 62. blocking; 621. a plug section; 622. a plugging section; 63. a connecting rod; 64. a drive assembly; 641. a rotating shaft; 642. a handle is rotated; 643. a handle; 7. a spring pin; 8. a reflow member; 81. a return pipe; 82. a pressure pump.
Detailed Description
The invention is described in further detail below with reference to the accompanying figures 1-4.
In a first aspect, the embodiment of the invention discloses a waste heat recovery device for a boiler combustion box. Referring to fig. 1, boiler combustion box waste heat recovery device includes support 1, boiler 2 on the support 1 is fixed in through the bolt, be used for burning box 3 to boiler 2 heating and be used for retrieving the recovery component 5 of waste heat in the burning box 3, on the roof of support 1 welding and burning box 3, be convenient for boiler 2's fixing, and then be convenient for heat boiler 2, boiler 2 is close to 3 one side welding of burning box and has heat pipe 4, 2 one end of boiler and 3 intercommunications of burning box are kept away from to heat pipe 4, heat pipe 4's setting, be convenient for carry boiler 2 with the heat in the burning box 3, the realization heats the water in boiler 2, reduce thermal scattering and disappearing.
Referring to fig. 1, the recovery member 5 includes a heating furnace 51 and a recovery pipe 52, one end of the recovery pipe 52 is communicated with the combustion box 3, the other end is connected with the heating furnace 51, two ends of the recovery pipe 52 are respectively welded with the top wall of the combustion box 3 and the bottom wall of the heating furnace 51, the heating furnace 51 is fixed on the bracket 1 through bolts, a blocking member 6 for blocking the heat pipe 4 and the recovery pipe 52 is arranged on the top wall of the combustion box 3, and further, the blocking of the heat pipe 4 and the communication of the recovery pipe 52 are facilitated, the utilization of the waste heat in the combustion box 3 is facilitated, and the utilization rate of resources is improved.
Referring to fig. 1 and 2, the plugging member 6 includes a fixing frame 61, two plugs 62, two connecting rods 63 and a driving assembly 64 for driving the connecting rods 63 to move, jacks 41 for plugging the plugs 62 are respectively formed in the heat conducting pipes 4 and the recovery pipes 52, the two plugs 62 are respectively plugged with the heat conducting pipes 4 and the recovery pipes 52, one ends of the connecting rods 63 are hinged to the plugs 62, the connecting rods 63 and the plugs 62 are arranged in a one-to-one correspondence manner, the fixing frame 61 is welded on the top wall of the combustion box 3, the plugs 62 and the connecting rods 63 are arranged, synchronous operation is conveniently performed on the plugs of the heat conducting pipes 4 and the communication of the recovery pipes 52, loss of residual heat is reduced, and utilization rate of the residual heat in the combustion box 3 is improved.
Referring to fig. 2, the driving assembly 64 includes three rotating shafts 641 and four rotating handles 642, wherein one end of each of the two rotating shafts 641 is rotatably connected to the fixing frame 61, the other end of each of the two rotating shafts 641 is welded to one of the rotating handles 642, both ends of the remaining rotating shaft 641 are welded to the rotating handles 642, one side of each of the rotating handles 642 away from the rotating shaft 641 is hinged to one of the connecting rods 63, each of the connecting rods 63 is hinged to one side of the adjacent two rotating handles 642 away from the rotating shaft 641, the two connecting rods 63 are respectively located at both sides of the rotating shaft 641, the two connecting rods 63 are axially distributed along the rotating shaft 641, the four rotating handles 642 are axially distributed along the rotating shaft 641, the axes of the three rotating shafts 643 are perpendicular to the axis of the connecting rod 63, and one end of the rotating shaft 641, which extends out of the fixing frame 61, is welded with a handle; the pivot 641 and the stem 642 are configured to drive the movement of the connecting rod 63 and, therefore, the plug 62.
Referring to fig. 3 and 4, the plug 62 includes an insertion section 621 and a blocking section 622 integrally connected, and the cross-sectional area of the insertion section 621 is larger than that of the blocking section 622, and the side of the blocking section 622 away from the insertion section 621 is hinged to the connecting rod 63; the inner walls of the heat conduction pipe 4 and the recovery pipe 52 at the sides far away from each other are provided with caulking grooves 42 for the insertion sections 621 to be inserted into, and the caulking grooves 42 are communicated with the insertion holes 41; the inner walls of the heat conduction pipe 4 and the recovery pipe 52 close to each other are provided with grooves 43 for the insertion sections 621 to be embedded in, and the grooves 43 are communicated with the jacks 41; the setting of caulking groove 42 and recess 43, the embedding of the grafting section 621 of being convenient for, and then realize the shutoff and the intercommunication to heat pipe 4 and recovery tube 52, and then be convenient for utilize waste heat in the burning box 3, reduce the loss of waste heat, reduce the waste of resource.
Referring to fig. 3 and 4, at least one spring pin 7 is disposed on a side wall of the insertion section 621, in this embodiment, two spring pins 7 are welded on each insertion section 621, the two spring pins 7 are located on two opposite side walls of the insertion section 621, at least two fixing holes 44 are disposed on the heat pipe 4 and the recovery pipe 52, in this embodiment, four fixing holes 44 are disposed on the heat pipe 4 and the recovery pipe 52, and the fixing holes 44 are both communicated with the caulking groove 42 and the groove 43; the arrangement of the spring pin 7 and the fixing hole 44 improves the connection tightness between the inserting section 621 and the heat conducting pipe 4 and the recovery pipe 52, so as to improve the sealing performance of the plug 62 and reduce the heat dissipation.
Referring to fig. 1, a reflux member 8 is arranged on a heating furnace 51, the reflux member 8 comprises a reflux pipe 81 and a pressure pump 82, one end of the reflux pipe 81 is communicated with the heating furnace 51, the other end of the reflux pipe is communicated with a boiler 2, one end of the reflux pipe 81 is welded on the top wall of the heating furnace 51, the other end of the reflux pipe is welded on the top wall of the boiler 2, and the pressure pump 82 is fixed on the side wall of the reflux pipe 81 through bolts; the arrangement of the pressure pump 82 and the return pipe 81 is convenient for injecting the water heated in the heating furnace 51 into the boiler 2, thereby improving the heating efficiency of the boiler 2 and simultaneously being convenient for utilizing the residual heat in the combustion box 3.
The implementation principle of the waste heat recovery device of the boiler combustion box provided by the embodiment of the invention is as follows: when waste heat in the combustion box 3 is utilized, firstly, the handle 643 is rotated, the handle 643 drives the rotating shaft 641 to rotate, the rotating shaft 641 drives the rotating handle 642 to rotate, the rotating handle 642 drives the connecting rod 63 to move, one connecting rod 63 drives the plug 62 to move, so that the plug 62 is separated from the embedded groove 43 and is embedded into the embedded groove 42, the heat conducting pipe 4 is plugged, meanwhile, the other connecting rod 63 drives the plug 62 to move, so that the plug 62 is separated from the embedded groove 42 and is embedded into the embedded groove 43, the recovery pipe 52 is communicated with the combustion box 3, so that the waste heat in the combustion box 3 is heated to the heating furnace 51 through the recovery pipe 52, and the waste heat in the combustion box 3 is utilized.
In a second aspect, the invention provides a method for recovering waste heat of a boiler combustion box, which comprises the following steps: firstly, a handle 643 is rotated, the handle 643 drives a rotating shaft 641 to rotate, the rotating shaft 641 drives a rotating handle 642 to rotate, the rotating handle 642 drives a connecting rod 63 to move, one connecting rod 63 drives a plug 62 to move, so that the plug 62 is separated from a groove 43 and is embedded into an embedding groove 42, meanwhile, the plug 62 drives a spring pin 7 to move, so that the spring pin 7 is separated from a fixing hole 44 communicated with the groove 43 and is then embedded into a fixing hole 44 communicated with the embedding groove 42, and the pipe cavity of the heat-conducting pipe 4 is plugged; meanwhile, another connecting rod 63 drives another plug 62 to move, so that the plug 62 is separated from the caulking groove 42 and embedded into the groove 43, meanwhile, the plug 62 drives the spring pin 7 to move, so that the spring pin 7 is separated from the fixing hole 44 communicated with the caulking groove 42 and then embedded into the fixing hole 44 communicated with the groove 43, so that the recovery pipe 52 is communicated with the combustion box 3, and the recovery of waste heat is realized.
The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. The utility model provides a boiler combustion case waste heat recovery device, includes support (1), is located boiler (2) on support (1) and be used for right combustion case (3) of boiler (2) heating, boiler (2) are close to combustion case (3) one side is provided with heat pipe (4), keep away from heat pipe (4) boiler (2) one end with combustion case (3) intercommunication, its characterized in that: still including retrieving component (5), retrieve component (5) including heating furnace (51) and recovery tube (52), recovery tube (52) one end with burning case (3) intercommunication, the other end with heating furnace (51) are connected, be provided with on the roof of burning case (3) and be used for the plug component (6) that carry out the shutoff to heat pipe (4) and recovery tube (52).
2. The waste heat recovery device of the boiler combustion box according to claim 1, characterized in that: the plugging member (6) comprises a fixing frame (61), two plugs (62), two connecting rods (63) and a driving assembly (64) for driving the connecting rods (63) to move, the plugs (62) are respectively connected with the heat-conducting pipes (4) and the recovery pipes (52) in an inserting mode, one end of each connecting rod (63) is hinged to the corresponding plug (62), the driving assembly (64) is located on the fixing frame (61), the fixing frame (61) is located on the top wall of the combustion box (3), and the heat-conducting pipes (4) and the recovery pipes (52) are provided with jacks (41) for the plugs (62) to be connected in an inserting mode.
3. The waste heat recovery device of the boiler combustion box according to claim 2, characterized in that: drive assembly (64) include three pivot (641) and four change handle (642), wherein two pivot (641) one end with mount (61) rotate to be connected, the other end and one the change handle (642) are connected, remain pivot (641) both ends all with change handle (642) are connected, change handle (642) are kept away from pivot (641) one side with connecting rod (63) are articulated, each connecting rod (63) and adjacent two change handle (642) are kept away from pivot (641) one side is articulated, and two connecting rod (63) are located respectively pivot (641) both sides.
4. The waste heat recovery device of the boiler combustion box according to claim 2, characterized in that: the plug (62) comprises an insertion section (621) and a blocking section (622), the cross section area of the insertion section (621) is larger than that of the blocking section (622), and the blocking section (622) is hinged to the connecting rod (63).
5. The waste heat recovery device of the boiler combustion box as claimed in claim 4, characterized in that: the inner wall of one side, away from each other, of the heat conduction pipe (4) and the recovery pipe (52) is provided with an embedded groove (42) for embedding the insertion section (621), and the embedded groove (42) is communicated with the insertion hole (41).
6. The waste heat recovery device of the boiler combustion box as claimed in claim 5, characterized in that: the inner wall of one side, close to each other, of the heat conduction pipe (4) and the recovery pipe (52) is provided with a groove (43) for embedding the insertion section (621), and the groove (43) is communicated with the insertion hole (41).
7. The waste heat recovery device of the boiler combustion box as claimed in claim 6, characterized in that: be provided with at least one spring catch (7) on the lateral wall of grafting section (621), seted up two at least fixed orificess (44) on heat pipe (4) and recovery tube (52), fixed orifices (44) all with caulking groove (42) and recess (43) intercommunication.
8. The waste heat recovery device of the boiler combustion box according to claim 1, characterized in that: the heating furnace (51) is provided with a backflow component (8), the backflow component (8) comprises a backflow pipe (81) and a pressure pump (82), one end of the backflow pipe (81) is communicated with the heating furnace (51), the other end of the backflow pipe is communicated with the boiler (2), and the pressure pump (82) is located on the backflow pipe (81).
9. A method for recovering waste heat of a boiler combustion box, the device for recovering waste heat of the boiler combustion box according to any one of claims 1 to 8, comprising the following steps: the heat-conducting pipes (4) are plugged through the plugging members (6) firstly, so that the heat in the combustion box (3) is prevented from heating the boiler (2) through the heat-conducting pipes (4), then the recovery pipes (52) are communicated with the combustion box (3), the waste heat in the combustion box (3) is enabled to heat the heating furnace (51) through the recovery pipes (52), and the utilization of the waste heat in the combustion box (3) is realized.
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| CN212962196U (en) * | 2020-09-07 | 2021-04-13 | 烟台益通机电设备有限公司 | Vertical boiler energy-saving device |
| CN112628840A (en) * | 2021-01-19 | 2021-04-09 | 永安千禾生物能源有限公司 | High-efficient combined heat and power generation system of living beings |
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