CN107152674A - A kind of My heat recovery - Google Patents
A kind of My heat recovery Download PDFInfo
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- CN107152674A CN107152674A CN201710485174.5A CN201710485174A CN107152674A CN 107152674 A CN107152674 A CN 107152674A CN 201710485174 A CN201710485174 A CN 201710485174A CN 107152674 A CN107152674 A CN 107152674A
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- recover
- coiled pipe
- heat recovery
- flow velocity
- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
- F22D1/08—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having fins, ribs, gills, corrugations, or the like on their outer surfaces, e.g. in vertical arrangement
- F22D1/10—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having fins, ribs, gills, corrugations, or the like on their outer surfaces, e.g. in vertical arrangement in horizontal arrangement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/04—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a surface receptive to ink or other liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/0036—Dispositions against condensation of combustion products
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
- F28F13/125—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation by stirring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2245/00—Coatings; Surface treatments
- F28F2245/02—Coatings; Surface treatments hydrophilic
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of My heat recovery, including recover body, the recover body is the shell structure of both-side opening, air inlet pipe flange and outlet pipe flange are provided with the opening of recover both sides, multilayer coiled pipe is provided with inside recover, every layer of coiled pipe is staggered, and the coiled pipe, which is externally provided with, subtracts flow velocity component, described to subtract the flow velocity that flow velocity component is used to slow down boiler smoke.The present invention can effectively utilize the latent heat in flue gas, exhaust gas temperature is down to 50 DEG C or so by 180 DEG C or so, fuel thermal energy utilization rate can improve 8 ~ 15%, effectively increase boiler thermal output, save the energy, reduce operating cost.
Description
Technical field
The invention belongs to energy recovery technical field, more particularly to a kind of My heat recovery.
Background technology
With China's West-East National Gas Transmission Project and the Expedite the application of other gas engineerings, it is contemplated that natural gas is in industrial pot
Application on stove will have one than larger development.The content of vapor is than other fuel in the flue gas that combustion of natural gas is produced
It is much higher.There is substantial amounts of heat to discharge during Water vapor condensation, that is, discharge the latent heat of vaporization.Gas fired-boiler exactly make use of day
This feature of right gas, will condense heat exchange of the condensation heat transfer principle applied to heated surface at the end of boiler.By carrying out exhaust gas temperature
With condensation number, the relation of boiler efficiency and condensate liquid to material corrosion speed, cigarette resistance and the experimental studies, maximum limit such as back pressure of burning
Degree ground improves the heat exchange efficiency of boiler, improves the thermal efficiency of boiler, saves the energy.
The equipment that heat recovery is carried out with coiled pipe is a lot, but in the prior art mostly using the snakelike tubular construction of individual layer come
Heat energy in absorption band hot fluid, such as Chinese invention patent (CN201611073037.2) disclose a kind of flue smoke-exhausting type cigarette
Waste heat recycling system, including water pump are coagulated in air cooling, and the water outlet of water pump installs the first pipeline, and the first pipeline is connected to energy-conservation
The import of device, the energy-saving appliance includes the coiled pipe in the exhaust gases passes being installed on support, the exhaust gases passes, described snakelike
Annular shape is provided with pipe removes smoked sheet, staggering setting except smoked sheet on adjacent coiled pipe.And for example Chinese invention patent
(CN201110051127.2) a kind of flue gas waste heat recovery energy-saving appliance of boiler wet method desulphurization system, including a flue shell are disclosed
Body and the heat-transfer pipe being located in flue housing.The two sides of flue housing set gas approach and exhanst gas outlet respectively；Heat-transfer pipe
For a series of coiled pipes in parallel, each coiled pipe includes many abreast and is spaced the straight tube as one man arranged and Duo Gen points
It is not connected to the bend pipe of same one end of adjacent two straight tubes stragglyly；The water inlet of the heat-transfer pipe is located at one close to exhanst gas outlet
End, and delivery port is located at one end close to gas approach, and make water inlet and delivery port from flue housing and gas approach
The one side vertical with exhanst gas outlet is drawn ....These prior arts are all to be set using one layer of coiled pipe as cooling or heat absorption
Standby, endothermic effect is limited, and fluid flows through the speed of coiled pipe soon, and the time of heat exchange is short, and heat recovery efficiency is not high (especially
It is that pressure is higher, the faster fluid of flow velocity), the fluid after coiled pipe still carries substantial amounts of heat, causes the wave of resource
Take.
The content of the invention
To solve the shortcoming and defect of prior art, it is an object of the present invention to provide a kind of residual heat from boiler fume is returned
Receive device so that flue gas residence time in recover is longer, and the heat exchange of flue gas and recover is more abundant, the heat of flue gas is returned
Yield is improved.
To achieve the above object, the technical solution adopted by the present invention is：A kind of My heat recovery, including reclaim
Device body, the recover body is the shell structure of both-side opening, at the opening of recover both sides provided with air inlet pipe flange and
Multilayer coiled pipe is provided with inside outlet pipe flange, recover, every layer of coiled pipe is staggered, and the coiled pipe, which is externally provided with, subtracts flow velocity
Component, it is described to subtract the flow velocity that flow velocity component is used to slow down boiler smoke.
Further, the coiled pipe is provided with 6 layers, and the straightway of coiled pipe is located in the recover body cavity, snakelike
The arc section of pipe is stretched out outside the recover.
Further, it is described to subtract the coiled pipe pipeline section outer surface that flow velocity component is coated in recover body cavity.
Further, the flow velocity component that subtracts is stratiform fin structure, and fin face is tilted, the master of fin face and flow of flue gas
Direction is in 10~15 ° of angles.
Further, the flow velocity component that subtracts is including roller and rotor, and the roller is spherical particle, snakelike pipe outer wall and
Slot rolling is equipped with the inwall of rotor, roller is located in the slot rolling between coiled pipe and rotor, the roller is solid by retainer
Fixed, the rotor includes annular portion, and the annular portion is provided with blade, and blade side is plane, and opposite side is arc-shaped.
Further, the blade is provided with 12, is distributed by axis annular array of coiled pipe center line.
Further, the flow velocity component that subtracts is to be machined with the fixed baffle plate for being located at snakelike tube outer surface, the baffle plate
Through hole, the through hole bearing of trend is tilted.
Further, the flow velocity component that subtracts is made of high thermal conductivity materials, preferably aluminium alloy or copper alloy, described to subtract
The outer surface of flow velocity component is coated with adsorption layer, and the adsorption layer is by zeolite powder, CaCO3, kaolin, CMC and SBR it is compound and
Into the zeolite powder, CaCO3, kaolin, CMC and SBR mass ratio be 10:3~5:3~5:0.5:3.
Further, the painting method of the adsorption layer is：
1) by zeolite powder, CaCO3Mixed in mass ratio with kaolin, mixture is through ball-milling treatment；
2) mixed powder after ball milling is crossed to the sieve of 1500 mesh, the powder after sieving is standby；
3) CMC, SBR are dissolved in water obtained slurries according to mass ratio so that SBR mass fraction is 10%~15%；
4) powder after the sieving is poured into and stirred in the slurries, mixed liquor is coated in hairbrush and described subtracts stream
The surface of fast component, calcines more than 2h in the range of 400~600 DEG C.
Further, it is provided near condensating water outlet tube, the outlet pipe flange and is provided with the downside of the recover body
Thermocouple.
The beneficial effects of the invention are as follows：
1. recover disclosed by the invention uses multi-layer intercrossed coiled pipe, contact of the flue gas with recover is substantially increased
Area so that contact of the flue gas with coiled pipe is more abundant；And alternating expression coiled pipe plays one to the air flow in recover
Fixed inhibition so that the heat exchanger time extension of flue gas and coiled pipe.
2. the present invention subtracts flow velocity component by being installed in snakelike pipe surface so that flue gas flowing velocity in recover drops
While low, produce substantial amounts of vortex, the fluid of the vortex motion path in recover is long, and easily diffusion full of entirely reclaiming
Device inner chamber body so that flow through that flue-gas temperature after cavity is considerably lower, heat recovery efficiency is significantly improved.
3. the present invention in the outer surface for subtracting flow velocity component by coating adsorption layer so that the partial volume of vapor ten in flue gas
Easily absorption forms drop in the outer surface for subtracting flow velocity component, while discharging condensation latent heat to coiled pipe, passes through the cigarette after recover
Gas water content declines, and heat recovery efficiency increases.
Brief description of the drawings
Fig. 1 is the main view direction structure schematic diagram of My heat recovery；
Fig. 2 is the overlook direction structural representation of recover；
Fig. 3 is the left view structural representation of recover (wherein air inlet pipe flange only depicts half)；
Fig. 4 is the fin structure schematic diagram；
Fig. 5 is the structural representation for subtracting flow velocity component described in embodiment 2；
Fig. 6 is the structural representation for subtracting flow velocity component described in embodiment 3.
Embodiment
Embodiment 1
As shown in Figures 1 to 3, a kind of My heat recovery, including recover body 1, recover body 1 are both-side opening
Shell structure, air inlet pipe flange 2 and outlet pipe flange 6 are provided with the opening of recover both sides.Multilayer is provided with inside recover
Coiled pipe 8, coiled pipe 8 is provided with 6 layers, and every layer of coiled pipe 8 is staggered.The straightway of coiled pipe 8 is located at the chamber of recover body 1
Interior, the arc section of coiled pipe 8 is stretched out outside the recover.Coiled pipe 8, which is externally provided with, subtracts flow velocity component 9, subtracts flow velocity component 9 and is coated on
Positioned at the pipeline section outer surface of coiled pipe 8 of the intracavitary of recover body 1, subtract the flow velocity that flow velocity component 9 is used to slow down boiler smoke.
Subtract flow velocity component 9 for the structure of stratiform fin 12, as shown in figure 4, fin face is tilted, the master of fin face and flow of flue gas
Direction is in 10~15 ° of angles.
Fin 12 is made of the aluminium alloy of high thermal conductivity, and the outer surface of fin is coated with adsorption layer, the adsorption layer by
Zeolite powder, CaCO3, kaolin, CMC and SBR be composited, the zeolite powder, CaCO3, kaolin, CMC and SBR mass ratio
For 10:3:3:0.5:3.
The painting method of adsorption layer is：
1) by zeolite powder, CaCO3Mixed in mass ratio with kaolin, mixture is through ball-milling treatment；
2) mixed powder after ball milling is crossed to the sieve of 1500 mesh, the powder after sieving is standby；
3) CMC, SBR are dissolved in water obtained slurries according to mass ratio so that SBR mass fraction is 10%；
4) powder after the sieving is poured into and stirred in the slurries, mixed liquor is coated in hairbrush and described subtracts stream
The surface of fast component, calcines more than 2h in the range of 400~600 DEG C.
The downside of recover body 1 is provided with condensed water collecting box 10, and the water drops flows down condensed in recover to condensed water is received
Discharged together from condensating water outlet tube 11 in header 10.Thermocouple 5 is installed near outlet pipe flange, passes through heat for detecting
The temperature value of flue gas body after recovery.
The coiled pipe two ends are water inlet 3 and delivery port 4, and as shown in Figures 1 to 3, water inlet 3 and delivery port 4 connect respectively
Boiler feedwater pipeline and boiler water supply entrance, to save production cost and space, the two ends of every layer of coiled pipe are pooled together altogether
With a set of water inlet 3 and delivery port 4.
The application method of recover described in the present embodiment is：
1. recover is arranged on into boiler nozzle, the air inlet pipe flange 2 of recover is connected with the flange of boiler nozzle so that
Boiler smoke is discharged into recover；
2. the cooling water intake 3 of recover is connect into boiler feedwater pipeline, delivery port 4 connects boiler water supply entrance, made in coiled pipe
Keep flow of cooling water；
3. the recovered device inlet end of boiler export flue gas enters in recover, make flue gas transversal flow band fin coiled pipe, flue gas
Flowing velocity declines after the stop of stratiform coiled pipe and fin, and changing flow direction by fin surface produces a large amount of whirlpools
Stream, due to the conductive force of fin so that the water in coiled pipe fully absorbs water temperature in fume afterheat, coiled pipe and raises and add
In boiler, boiler feed temperature is improved, boiler efficiency is improved, save fuel, so as to reach Mist heat recovering, save energy
Source；Meanwhile, the steam contained in flue gas is condensed into drop on the adsorption layer of fin surface, and is slipped in condensed water collecting box
Discharged together from condensating water outlet tube.
The flue-gas temperature that outlet pipe flange 6 is nearby provided with the measurement recover of thermocouple 5 outlet side is located at, temperature value is passed
It is defeated to showing in display, its temperature reading value is as shown in table 1.The humidity value of recover outlet side gas is detected simultaneously,
Its moisture readings is as shown in table 1.
Embodiment 2
As shown in Figures 1 to 3, a kind of My heat recovery, including recover body 1, recover body 1 are both-side opening
Shell structure, air inlet pipe flange 2 and outlet pipe flange 6 are provided with the opening of recover both sides.Multilayer is provided with inside recover
Coiled pipe 8, coiled pipe 8 is provided with 6 layers, and every layer of coiled pipe 8 is staggered.The straightway of coiled pipe 8 is located at the chamber of recover body 1
Interior, the arc section of coiled pipe 8 is stretched out outside the recover.Coiled pipe 8, which is externally provided with, subtracts flow velocity component 9, subtracts flow velocity component 9 and is coated on
Positioned at the pipeline section outer surface of coiled pipe 8 of the intracavitary of recover body 1, subtract the flow velocity that flow velocity component 9 is used to slow down boiler smoke.
Subtracting flow velocity component 9 includes roller 13 and rotor, as shown in Figure 5.Roller 13 be spherical particle, the outer wall of coiled pipe 8 and
Slot rolling is equipped with the inwall of rotor, roller 13 is located in the slot rolling between coiled pipe 8 and rotor, roller is solid by retainer
It is fixed.The rotor includes annular portion, and the annular portion is provided with blade, and blade side is plane 91, and opposite side is arc-shaped
92.Blade is provided with 12, is distributed by axis annular array of coiled pipe center line.
Blade is made of the copper alloy of high thermal conductivity, and the outer surface of blade is coated with adsorption layer, and the adsorption layer is by boiling
Stone flour, CaCO3, kaolin, CMC and SBR be composited, the zeolite powder, CaCO3, kaolin, CMC and SBR mass ratio be
10:5:5:0.5:3。
The painting method of adsorption layer is：
1) by zeolite powder, CaCO3Mixed in mass ratio with kaolin, mixture is through ball-milling treatment；
2) mixed powder after ball milling is crossed to the sieve of 1500 mesh, the powder after sieving is standby；
3) CMC, SBR are dissolved in water obtained slurries according to mass ratio so that SBR mass fraction is 15%；
4) powder after the sieving is poured into and stirred in the slurries, mixed liquor is coated in hairbrush and described subtracts stream
The surface of fast component, calcines more than 2h in the range of 400~600 DEG C.
The downside of recover body 1 is provided with condensed water collecting box 10, and the water drops flows down condensed in recover to condensed water is received
Discharged together from condensating water outlet tube 11 in header 10.Thermocouple 5 is installed near outlet pipe flange, passes through heat for detecting
The temperature value of flue gas body after recovery.
The coiled pipe two ends are water inlet 3 and delivery port 4, and as shown in Figures 1 to 3, water inlet 3 and delivery port 4 connect respectively
Boiler feedwater pipeline and boiler water supply entrance, to save production cost and space, the two ends of every layer of coiled pipe are pooled together altogether
With a set of water inlet 3 and delivery port 4.
The application method of recover described in the present embodiment is：
1. recover is arranged on into boiler nozzle, the air inlet pipe flange 2 of recover is connected with the flange of boiler nozzle so that
Boiler smoke is discharged into recover；
2. the cooling water intake 3 of recover is connect into boiler feedwater pipeline, delivery port 4 connects boiler water supply entrance, made in coiled pipe
Keep flow of cooling water；
3. the recovered device inlet end of boiler export flue gas enters in recover, flue gas is after stratiform coiled pipe under flowing velocity
Drop, meanwhile, sweep of gases blade make it that subtracting flow velocity component 9 starts rotation, and flue gas is produced in vortex, coiled pipe in recover
Water fully absorbs water temperature in fume afterheat, coiled pipe and raises and add in boiler, improves boiler feed temperature, puies forward boiler efficiency
Height, saves fuel, so as to reach Mist heat recovering, saves the energy；Meanwhile, suction of the steam contained in flue gas in blade surface
Drop is condensed on attached layer, and is slipped in condensed water collecting box together from condensating water outlet tube discharge.
The flue-gas temperature that outlet pipe flange 6 is nearby provided with the measurement recover of thermocouple 5 outlet side is located at, temperature value is passed
It is defeated to showing in display, its temperature reading value is as shown in table 1.The humidity value of recover outlet side gas is detected simultaneously,
Its moisture readings is as shown in table 1.
Embodiment 3
As shown in Figures 1 to 3, a kind of My heat recovery, including recover body 1, recover body 1 are both-side opening
Shell structure, air inlet pipe flange 2 and outlet pipe flange 6 are provided with the opening of recover both sides.Multilayer is provided with inside recover
Coiled pipe 8, coiled pipe 8 is provided with 6 layers, and every layer of coiled pipe 8 is staggered.The straightway of coiled pipe 8 is located at the chamber of recover body 1
Interior, the arc section of coiled pipe 8 is stretched out outside the recover.Coiled pipe 8, which is externally provided with, subtracts flow velocity component 9, subtracts flow velocity component 9 and is coated on
Positioned at the pipeline section outer surface of coiled pipe 8 of the intracavitary of recover body 1, subtract the flow velocity that flow velocity component 9 is used to slow down boiler smoke.
It is to be machined with through hole 7, the side of extension of through hole 7 on the fixed baffle plate for being located at snakelike tube outer surface, baffle plate to subtract flow velocity component 9
To inclination, as shown in Figure 6.
Baffle plate is made of the Cu alloy material of high thermal conductivity, and the outer surface of baffle plate is coated with adsorption layer, the adsorption layer
By zeolite powder, CaCO3, kaolin, CMC and SBR be composited, the zeolite powder, CaCO3, kaolin, CMC and SBR quality
Than for 10:3.7:3.7:0.5:3.
The painting method of adsorption layer is：
1) by zeolite powder, CaCO3Mixed in mass ratio with kaolin, mixture is through ball-milling treatment；
2) mixed powder after ball milling is crossed to the sieve of 1500 mesh, the powder after sieving is standby；
3) CMC, SBR are dissolved in water obtained slurries according to mass ratio so that SBR mass fraction is 15%；
4) powder after the sieving is poured into and stirred in the slurries, mixed liquor is coated in hairbrush and described subtracts stream
The surface of fast component, calcines more than 2h in the range of 400~600 DEG C.
The downside of recover body 1 is provided with condensed water collecting box 10, and the water drops flows down condensed in recover to condensed water is received
Discharged together from condensating water outlet tube 11 in header 10.Thermocouple 5 is installed near outlet pipe flange, passes through heat for detecting
The temperature value of flue gas body after recovery.
The coiled pipe two ends are water inlet 3 and delivery port 4, and as shown in Figures 1 to 3, water inlet 3 and delivery port 4 connect respectively
Boiler feedwater pipeline and boiler water supply entrance, to save production cost and space, the two ends of every layer of coiled pipe are pooled together altogether
With a set of water inlet 3 and delivery port 4.
The application method of recover described in the present embodiment is：
1. recover is arranged on into boiler nozzle, the air inlet pipe flange 2 of recover is connected with the flange of boiler nozzle so that
Boiler smoke is discharged into recover；
2. the cooling water intake 3 of recover is connect into boiler feedwater pipeline, delivery port 4 connects boiler water supply entrance, made in coiled pipe
Keep flow of cooling water；
3. the recovered device inlet end of boiler export flue gas enters in recover, flue gas passes through the stop of stratiform coiled pipe and baffle plate
Flowing velocity declines after effect, meanwhile, flue gas is produced in recover after through hole 7 and is vortexed, and the water in coiled pipe is fully inhaled
Receive water temperature in fume afterheat, coiled pipe to raise and add in boiler, improve boiler feed temperature, improve boiler efficiency, save
Fuel, so as to reach Mist heat recovering, saves the energy；Meanwhile, the steam contained in flue gas is on the adsorption layer of blade surface
Drop is condensed into, and is slipped in condensed water collecting box together from condensating water outlet tube discharge.
The flue-gas temperature that outlet pipe flange 6 is nearby provided with the measurement recover of thermocouple 5 outlet side is located at, temperature value is passed
It is defeated to showing in display, its temperature reading value is as shown in table 1.The humidity value of recover outlet side gas is detected simultaneously,
Its moisture readings is as shown in table 1.
Comparative example 1
A kind of My heat recovery, its structure and application method are same as Example 1, and it is differed only in, coiled pipe
Surface is not installed by fin (subtracting flow velocity component 9).Adsorption layer is coated in snakelike pipe surface in the same way.Similarly, by this
Recover shown in comparative example carries out flue gas heat recovery according to the application method of embodiment 1, and measures the cigarette nearby of air pipe flange 6
The temperature and humidity value of gas, its reading is as shown in table 1.
Comparative example 2
A kind of My heat recovery, its structure and application method are same as Example 1, and it is differed only in, fin
Outer surface is not coated by adsorption layer, also not comprising any coating.Similarly, by recover shown in this comparative example according to embodiment 1
Application method carries out flue gas heat recovery, and measures the temperature and humidity value of flue gas near air pipe flange 6, its reading such as table 1
It is shown.
Table 1
As seen from table, flow velocity component is subtracted by being installed in snakelike pipe surface so that flue gas flowing velocity in recover is reduced
Meanwhile, produce substantial amounts of vortex, the fluid of the vortex motion path in recover is long, and easily diffusion is full of in whole recover
Cavity so that flow through that flue-gas temperature after cavity is considerably lower, heat recovery efficiency is significantly improved.
Adsorption layer is coated in the outer surface for subtracting flow velocity component so that the vapor in flue gas, which is extremely readily adsorbed in, subtracts flow velocity
The outer surface of component forms drop, while discharge condensation latent heat to coiled pipe, passes through flue gas water content after recover (i.e. humidity
Value) it is detailed decline, heat recovery efficiency increases.
Claims (10)
1. a kind of My heat recovery, including recover body, the recover body are the housing knot of both-side opening
Air inlet pipe flange and outlet pipe flange are provided with structure, the opening of recover both sides, it is characterised in that multilayer is provided with inside recover
Coiled pipe, every layer of coiled pipe is staggered, and the coiled pipe, which is externally provided with, subtracts flow velocity component, and the flow velocity component that subtracts is used to slow down pot
The flow velocity of kiln gas.
2. a kind of My heat recovery according to claim 1, it is characterised in that the coiled pipe is provided with 6 layers,
The straightway of coiled pipe is located in the recover body cavity, and the arc section of coiled pipe is stretched out outside the recover.
3. a kind of My heat recovery according to claim 1, it is characterised in that described to subtract flow velocity component cladding
In the coiled pipe pipeline section outer surface in recover body cavity.
4. a kind of My heat recovery according to any one of claims 1 to 3, it is characterised in that described to subtract stream
Fast component is stratiform fin structure, and fin face is tilted, and the principal direction of fin face and flow of flue gas is in 10~15 ° of angles.
5. a kind of My heat recovery according to any one of claims 1 to 3, it is characterised in that described to subtract stream
Fast component includes roller and rotor, and the roller is to be equipped with slot rolling on spherical particle, the inwall of snakelike pipe outer wall and rotor, is rolled
Son is located in the slot rolling between coiled pipe and rotor, and the roller is fixed by retainer, and the rotor includes annular portion, described
Annular portion is provided with blade, and blade side is plane, and opposite side is arc-shaped.
6. a kind of My heat recovery according to claim 5, it is characterised in that the blade is provided with 12,
It is distributed by axis annular array of coiled pipe center line.
7. a kind of My heat recovery according to any one of claims 1 to 3, it is characterised in that described to subtract stream
Fast component is that through hole is machined with the fixed baffle plate for being located at snakelike tube outer surface, the baffle plate, and the through hole bearing of trend is tilted.
8. a kind of My heat recovery according to claims 1 to 3,6 any one, it is characterised in that described to subtract
Flow velocity component is made of high thermal conductivity materials, preferably aluminium alloy or copper alloy, and the outer surface for subtracting flow velocity component is coated with
Adsorption layer, the adsorption layer is by zeolite powder, CaCO3, kaolin, CMC and SBR be composited, the zeolite powder, CaCO3, kaolinite
The mass ratio of soil, CMC and SBR is 10:3~5:3~5:0.5:3.
9. a kind of My heat recovery according to claim 8, it is characterised in that the coating side of the adsorption layer
Method is：
1) by zeolite powder, CaCO3Mixed in mass ratio with kaolin, mixture is through ball-milling treatment；
2) mixed powder after ball milling is crossed to the sieve of 1500 mesh, the powder after sieving is standby；
3) CMC, SBR are dissolved in water obtained slurries according to mass ratio so that SBR mass fraction is 10%~15%；
4) powder after the sieving is poured into and stirred in the slurries, mixed liquor is coated in hairbrush and described subtracts stream
The surface of fast component, calcines more than 2h in the range of 400~600 DEG C.
10. a kind of My heat recovery according to any one of claims 1 to 3, it is characterised in that the recovery
It is provided with the downside of device body near condensating water outlet tube, the outlet pipe flange and thermocouple is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710485174.5A CN107152674B (en) | 2017-06-23 | 2017-06-23 | Boiler flue gas waste heat recoverer |
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| CN201710485174.5A CN107152674B (en) | 2017-06-23 | 2017-06-23 | Boiler flue gas waste heat recoverer |
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| CN107152674B CN107152674B (en) | 2022-11-29 |
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| CN109974303A (en) * | 2019-04-16 | 2019-07-05 | 廊坊一萍锅炉保养工程有限公司 | A kind of gas-fired water heating boiler energy-saving appliance |
| CN111520903A (en) * | 2020-05-19 | 2020-08-11 | 杭州中荷智慧城市科技有限公司 | Waste heat recovery type household wall-mounted furnace |
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|---|---|
| CN107152674B (en) | 2022-11-29 |
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