CN107559877A - Multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver - Google Patents
Multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver Download PDFInfo
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- CN107559877A CN107559877A CN201710952485.8A CN201710952485A CN107559877A CN 107559877 A CN107559877 A CN 107559877A CN 201710952485 A CN201710952485 A CN 201710952485A CN 107559877 A CN107559877 A CN 107559877A
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
A kind of multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver of the present invention includes Regenerative Combustion System and surplus heat treatment system, Regenerative Combustion System includes the first reversal valve, heat storage, burner and combustion chamber, first reversal valve connects the first import and offgas outlet respectively, and any switching laws between the first import and the offgas outlet, the heat storage is connected with the first reversal valve, burner is connected with heat storage, and combustion chamber is connected with burner；Surplus heat treatment system includes the second reversal valve, current divider, heat storage and interflow device, the second reversal valve and connects the second import, and the second reversal valve is connected with current divider, and one end of heat storage is connected with current divider, and the other end is connected with interflow device.The device can effectively utilize fume afterheat, improve the stability of burner flame.The multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver is simple in construction simultaneously, and easily transformation, related phase-change material can be changed according to different operating modes.
Description
Technical field
The invention belongs to combustion energy saving technical field, more particularly to a kind of multipurpose modular multistage phase-change heat-storage high temperature
Air burning energy saver.
Background technology
In recent years, as national governments are to the pay attention to day by day of efforts at environmental protection, all risen in worldwide pollution administration,
The motion of environmental protection.New green technology and product continues to bring out, while is also constantly be generated new problem.Coal dust firing exists
Critical role, and the always emphasis and difficult point of pollution administration are accounted in disposal of pollutants.
Boiler thermal output how is improved, saves the energy, reduces soot emissions, is effective solution China's energy and environmental problem
Important step.And in this link, it is key point to improve efficiency of combustion.To solve the above problems, using third generation heat accumulating type
Combustion technology is undoubtedly a selection well.
Regenerative combustion technology is the combustion technology of latest generation, is third generation combustion technology.For the first generation and second
For the low situation of the burner hearth heat utilization efficiency of combustion technology, third generation heat accumulating type high temperature air combustion technology is various anti-with that can improve
The advantages of answering the heat utilization efficiency and reaction temperature, the quality and grade of reduction fuel of device, is advantageously implemented low oxygen and low nitrogen burning, together
When can reduce the generation of atmospheric haze.The burner hearth heat utilization efficiency of third generation regenerative combustion technology is up to 86%, systematic heat utilization
Rate is up to more than 94%.
The key of third generation regenerative combustion technology is the utilization of heat storage.The heat storage of existing regenerative combustion technology
It with the materials such as refractory brick, these heat-storing materials is to store heat by material sensible heat to be.Because sensible heat accumulation of heat has energy
The shortcomings that density is small, range of temperature is big so that third generation regenerative combustion technology exist reversal valve commutation frequently, burner combustion
Burn the shortcomings that unstable.
The content of the invention
In order to solve the above problems, the invention provides a kind of combustion of multipurpose modular multistage phase-change heat-storage high temperature air
Energy saver is burnt, described device includes：Regenerative Combustion System and surplus heat treatment system,
The Regenerative Combustion System includes the first reversal valve, heat storage, burner and combustion chamber, first reversal valve point
The first import and offgas outlet, and any switching laws between first import and the offgas outlet are not connected, pass through described
One import flows into normal temperature air, and the heat storage is connected with first reversal valve, and the burner is connected with the heat storage, institute
Combustion chamber is stated to be connected with the burner；The surplus heat treatment system includes the second reversal valve, current divider, heat storage and interflow
Device, second reversal valve connect the second import, flow into normal temperature air or normal-temperature water by second import, described second changes
It is connected to valve with the current divider, one end of the heat storage is connected with the current divider, and the other end is connected with the interflow device,
S-shaped heat exchange pipeline is provided with the heat storage.
Further, the heat storage includes the first heat storage and the second heat storage, and first heat storage passes through described
First reversal valve is connected with first import or the offgas outlet；Second heat storage by first reversal valve with
The offgas outlet or first import connection.
Further, the burner includes the first burner and the second burner, first burner and first heat storage
Connection；Second burner is connected with second heat storage；First burner and second burner are connected to oil
Air cock.
Further, the current divider includes one-level current divider and two level current divider, the one-level current divider and described the
Two reversal valves are connected, and one end of the two level current divider is connected with the one-level current divider, and the other end is connected with the heat storage.
Further, the interflow device includes one-level interflow device, two level interflow device and three-level and collaborates device, and the three-level is closed
One end of stream device is connected with the heat storage, and the other end is connected with two level interflow device, the one-level interflow device and described two
The device connection of level interflow.
Preferably, the heat storage is multi-level phase change heat storage.
Further, the multi-level phase change heat storage includes multiple thermal storage units, and the thermal storage unit includes high-temperature heat accumulation
Unit, medium temperature regenerator unit, low-temperature heat accumulating unit.
Further, the high-temperature heat accumulation unit is equipped with high temperature phase change material (pcm), and the medium temperature regenerator unit is equipped with medium temperature phase
Becoming material, the low-temperature heat accumulating unit is made equipped with low-temperature phase-change material, the high-temperature heat accumulation unit,
Medium temperature regenerator unit and low-temperature heat accumulating unit in the multi-level phase change heat storage according to along flow of flue gas direction,
Temperature sequence is arranged in order.
Preferably, the thermal storage unit is bulk, and inside offers duct, the area of section in the duct and the accumulation of heat
The area of section ratio of unit is 0.2-0.5.
Further, it is provided with one in the high-temperature heat accumulation unit, medium temperature regenerator unit and low-temperature heat accumulating unit
The S-shaped heat exchange pipeline, three S-shaped heat exchange pipeline connections connect, in S-shaped heat exchange pipeline in medium flow direction and thermal storage unit
Flue gas flow direction is opposite.
A kind of the advantages of multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver of the present invention, is：
1. the device of the present invention is a kind of more efficient regenerative combustion system using fume afterheat.
2. using multistage latent-heat storage body in the device of the present invention, phase change heat storage material can be changed according to actual conditions,
Temperature control is more flexible, and pre-heated gas temperature is more steady.
3. the phase-change material that heat storage uses in the present invention is cheap for fuse salt solid-liquid sizing phase-change material, cost
It is low.
4. the phase-change material storage density in the multistage latent-heat storage body used in the present invention is big, heat accumulation time length, commutation
Valve need not frequently commutate.
5. the phase-change material in the present invention has the characteristics of phase transition temperature is constant, it is ensured that the temperature of preheated air compared with
Relative constancy in the long time, so that the flame of burner is more steady.
6. unnecessary waste heat can be used for heating air or water in the present invention, the needs for daily life.
7. the waste heat life in the present invention is laid out during utilizing using the S-shaped heat exchange of high efficient heat exchanging.
8. mode of the waste heat life using process using classified utilization waste heat after heat exchange in the present invention.
Brief description of the drawings
Fig. 1 is that multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver waste heat interflow of the present invention utilizes
Schematic diagram.
Fig. 2 is multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver waste heat classified utilization of the present invention
Schematic diagram.
Fig. 3 is the structural representation of multipurpose multi-level phase change thermal storage unit of the present invention.
The imports of 1- first, the reversal valves of 2- first, the heat storages of 3- first, 4- oil and gas switch, the burners of 5- first, 6- combustion chambers,
The burners of 7- second, the heat storages of 8- second, 9- offgas outlets, the imports of 10- second, the reversal valves of 11- second, 12- one-levels current divider,
13- two levels current divider, 14- three-levels interflow device, 15- two levels interflow device, 16- one-levels interflow device, 17- heat exchange pipelines, 18- high temperature store
Hot cell, 19- medium temperature regenerators unit, 20- low-temperature heat accumulatings unit, 161- air outlet slits.
Embodiment
Below with reference to accompanying drawing, dress is saved to the multipurpose modular multistage phase-change heat-storage high-temperature air burning of the present invention
Put and be described further.
More than multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver of the invention according to Fig. 1
The schematic diagram of heat seal fluently, the inventive system comprises：Regenerative Combustion System and surplus heat treatment system.The heat-accumulation combustion system
System includes the first reversal valve 2, heat storage, burner and combustion chamber 6, and first reversal valve 2 connects the first import 1 and tail gas goes out
Mouth 9, and any switching laws between first import 1 and the offgas outlet 9, the heat storage connect with first reversal valve 2
Connect, the burner is connected with the heat storage, and the combustion chamber 6 is connected with the burner；The surplus heat treatment system includes the
Two reversal valves 11, current divider, heat storage and interflow device, second reversal valve 11 connect the second import 10, and described second changes
It is connected to valve 11 with the current divider, one end of the heat storage is connected with the current divider, and the other end connects with the interflow device
Connect.
According to an embodiment of the invention, the heat storage includes the first heat storage 3 and the second heat storage 8, and described first stores
Hot body 3 is connected by first reversal valve 2 with first import 1 or the offgas outlet 9；Second heat storage 8 is logical
First reversal valve 2 is crossed to be connected with the offgas outlet 9 or first import 1.
According to an embodiment of the invention, the burner includes the first burner 5 and the second burner 7, first burner 5 and institute
The first heat storage 3 is stated to connect；Second burner 7 is connected with second heat storage 8；
First burner 5 and second burner 7 are connected to oil and gas switch 4.
According to an embodiment of the invention, the current divider includes one-level current divider 12 and two level current divider 13, the one-level
Current divider 12 is connected with second reversal valve 11, and one end of the two level current divider 13 is connected with the one-level current divider 12,
The other end is connected with the heat storage.
According to an embodiment of the invention, the interflow device includes one-level interflow device 16, two level interflow device 15 and three-level conjunction
Device 14 is flowed, one end of three-level interflow device 14 is connected with the heat storage, and the other end is connected with two level interflow device 15, institute
One-level interflow device 16 is stated to be connected with two level interflow device 15.
To be multiple, i.e., the first heat storage 3 is multiple side by side is horizontally disposed with the number of the heat storage in the present invention, the
Two heat storages 8 are multiple side by side to be horizontally disposed with.
According to an embodiment of the invention, the heat storage is multi-level phase change heat storage.The heat storage includes multiple accumulation of heats
Unit, the thermal storage unit include high-temperature heat accumulation unit 18, medium temperature regenerator unit 19, low-temperature heat accumulating unit 20.The high temperature stores
Hot cell 18 is equipped with high temperature phase change material (pcm), and the medium temperature regenerator unit 19 is equipped with medium temperature phase-change material, the low-temperature heat accumulating unit
20 are equipped with low-temperature phase-change material, and the high-temperature heat accumulation unit 18, medium temperature regenerator unit 19 and low-temperature heat accumulating unit 20 are described
It is arranged in order in heat storage according to along flow of flue gas direction, temperature sequence.After storage has heat in heat storage phase-change material,
There are a variety of sizing phase-change materials in heat storage, phase-change material is arranged in order from high to low according to phase transition temperature, due to traditional phase
It is the low inorganic salt materials of thermal conductivity factor to become material, therefore each row phase-change material is staggered to improve the heat exchange of heat storage
Effect.
According to an embodiment of the invention, the high-temperature heat accumulation unit 18, medium temperature regenerator unit 19 and low-temperature heat accumulating unit
A S-shaped heat exchange pipeline, three S-shaped heat exchange pipeline connection connections are provided with 20.
More than Fig. 2 multipurpose modular multistage phase-change heat-storage high-temperature air burning energy savers of the present invention of the invention
For the schematic diagram of hot classified utilization, the hot-air/water for exchanging heat out during waste heat life utilizes no longer collaborates, but point
Air/water is connected for high, medium and low three stocks step and utilizes device, and heat exchange is further improved by way of waste heat classified utilization
The utilization ratio of heat out.
The structural representation of multipurpose multi-level phase change thermal storage unit of the invention according to Fig. 3, the thermal storage unit
For bulk, inside offers duct, and the area of section ratio of the area of section in the duct and the thermal storage unit is 0.2-0.5,
That is this direction area of section ratio of the radial section area in duct and the thermal storage unit at place is 0.2-0.5.Certainly, this hair
Duct shape inside thermal storage unit in bright can also make S-shaped, when heat exchanging fluid flows through from heat exchange pipeline 17, lead to
Cross heat exchange pipeline to be exchanged heat with phase-change material, heat exchanging fluid is heated.Water (flow) direction in S-shaped heat exchange pipeline 17 is with flue gas stream
Dynamic is in opposite direction.Because sizing phase-change material makes simply, its size can be made according to actual conditions.Growth can be made
The ratio of width to height is 2:1:1 cuboid.
It is an object of the invention to propose a kind of multipurpose modular multistage phase-change heat-storage high-temperature air burning energy-conservation dress
Put, the device can effectively utilize fume afterheat, improve the stability of burner flame.The heat-exchanger rig is simple in construction simultaneously, holds
Easily transformation, related phase-change material can be changed according to different operating modes.Because phase-change material just has, storage density is big, phase alternating temperature
Spend the advantages that constant, phase transformation Volume Changes are small so that the heat-accumulating burner solves the Air Temperature of gas commutation frequently, after preheating
Spend excursion greatly caused burner flame combustion instability the problem of.
A kind of heat-accumulation combustion of multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver of the present invention
The running of system is：Normal temperature air enters the first reversal valve 2 by the first import 1, and now, first reversal valve 2 is pressed
Solid line is commutated in Fig. 1.Enter the multistage gap of first heat storage 3 in right side after normal temperature air, now multistage first heat storage 3
Latent heat storage material in store and have a heat, gas at normal temperature enters the first burner 5 by heated after first heat storage of multistage 3.
Now, the oil and gas switch 4 positioned at right side is open-minded, and the oil and gas import 4 positioned at left side is closed, and fuel oil or combustion gas then pass through right side oil gas
Switch 4 enters in the first burner 5 of right side, mixes with heated gas and is burnt in combustion chamber 6.Tail gas after burning then leads to
The second burner 7 of left side is crossed to enter in multistage second heat storage 8 in left side.Now, waste heat from tail gas is stored in left side multistage second and stored
In hot body 8.Tail gas after being cooled enters in the first reversal valve 2 after being come out from multistage second heat storage 8, through the row of offgas outlet 9
Go out.
Combustion air heating process：Until the heat release of latent heat heat accumulating finishes in the first heat storage 3 of multistage of right side
Afterwards, the reversal valve 2 is then commutated as shown in phantom in Figure 1, and now, normal temperature air is changed by the first import 1 into first
Into valve 2, afterwards into multistage second heat storage 8 in left side, now second heat storage of multistage 8 has stored heat, and normal
Warm air is then entering in the second burner of left side 7 after second heat storage of multistage 8 is preheated.Now, left side oil and gas switch 4 is opened
Logical, fuel oil or combustion gas are then entered in the second burner 7 of left side by left side oil and gas switch 4, are mixed and are being fired with heated gas
Burn in room 6 and burn.Gas after burning is then entered in multistage first heat storage 3 in right side by the first burner of right side 5.Now, tail
Gas waste heat is stored in multistage first heat storage 3 in right side, and reciprocation cycle uses as stated above.
According to an embodiment of the invention, by controlling the oil and gas switch 4 of the left and right sides, correspondingly heat storage can be controlled
Working condition.The first heretofore described heat storage 3 and the second heat storage 8 can also be to the normal temperature into multiple combustion chambers 6
Air is preheated.
A kind of surplus heat treatment system of multipurpose multi-level phase change heat accumulating type high-temperature air burning energy saver of the present invention
Running is：Normal temperature air passes through the second reversal valve 11 by the second import 10, and second reversal valve 11 presses solid line in figure
Commutated, afterwards into the inside middle pipeline of the first heat storage of right side 3, air with after phase-change material heat exchange heating from right side the
One heat storage 3 comes out, and is flowed out after collaborating device from the air outlet slit 161 of interflow device.Now, the air after heating can be used for work
Industry or daily life.
Until in the first heat storage of right side 3 after the heat release of latent heat heat accumulating, the second reversal valve is then as in figure
Commutated shown in dotted line, now, normal temperature air eats dishes without rice or wine 10 into the second reversal valve 11 by second, afterwards into left side second
The heat storage inside middle pipeline of heat storage 8, air after phase-change material heat exchange heating from the second heat storage of left side 8 with coming out, warp
Flowed out after crossing interflow device from the air outlet slit 161 on the device of interflow.Now, the air after heating can be used for industrial or daily life
It is living, and so on circulate.Certain above-mentioned normal temperature air can replace with other fluids, such as normal-temperature water etc. as needed.
High temperature phase change material (pcm) in the present invention is the sizing solid-liquid phase-change material that phase transition temperature is 600-900 DEG C.Such as：
61Na2SO4- 39MgO, phase transition temperature are 884 DEG C；62Na2SO4-38SiO2, phase transition temperature is 858 DEG C；54LiF-46MgO, phase transformation
Temperature is 849 DEG C；24Na2CO3-26BaCO3- 50MgO, phase transition temperature are 686 DEG C；54MgCl2-48SiO2, phase transition temperature 714
℃；45NaF-15MgF-40MgO, phase transition temperature are 832 DEG C；40LiF-20MgF2- 40MgO, phase transition temperature are 746 DEG C.
Medium temperature phase-change material in the present invention is the sizing solid-liquid phase-change material of 300-600 DEG C of phase transition temperature.Such as：
53Li2SO4- 47MgO, phase transition temperature are 577 DEG C；63KOH-37SiO2, phase transition temperature is 400 DEG C；33.6Na2CO3-
26.4Li2CO3- 40MgO, phase transition temperature are 496 DEG C；33MgCl2- 12.24KCl-11.76NaCl-40MgO, phase transition temperature are
380℃；18.15NaCl-13.2KCl-23.65LiCl-45MgO, phase transition temperature are 346 DEG C；24.44BaCl2-13.2KCl-
15.95CaCl2- 48MgO, phase transition temperature are 551 DEG C；MgCl2- NaCl, phase transition temperature are 435 DEG C.
Low-temperature phase-change material in the present invention is the sizing solid-liquid phase-change material of 100-300 DEG C of phase transition temperature.Such as：
41.8KCl-19.2ZnCl2- 40MgO, phase transition temperature are 235 DEG C；29NaNO3-29KNO3- 42MgO, phase transition temperature are 220 DEG C；
40LiNO3-60 diatomite, phase transition temperature are 250 DEG C；55ZnCl-45MgO, phase transition temperature are 280 DEG C；52AlCl3- 48MgO,
Phase transition temperature is 190 DEG C.
Because sizing phase-change material makes simply, its size can be made according to actual conditions.
Hereinafter, the behaviour in service of corresponding phase-change material under different reaction temperatures will be illustrated by two embodiments.
Embodiment one
1. high-temperature shaping phase-change material is 24Na used by the present embodiment2CO3-26BaCO3- 50MgO, medium temperature sizing phase
Change material is 33.6Na2CO3-26.4Li2CO3- 40MgO, low-temperature shaped phase-change material are 29NaNO3-29KNO3-42MgO。
2. combustion gas (methane) and the air preheated by the first heat storage 3 are entered into the first burner 5 and fired in combustion chamber 6
Burn.
3. the tail gas after burning enters the second heat storage 8, waste heat is stored into the phase of the second heat storage 8 with heat accumulating heat exchange
Become in material.
4. when the exhaust temperature come out from the second heat storage 8 is higher than 200 DEG C, change the first reversal valve 2, while open the
Two burners 7；Now the phase-change material in normal temperature air and the second heat storage 8 carries out heat exchange heating, is being burnt with combustion gas (methane)
Burnt in room 6；
5. the tail gas after burning enters the phase transformation material that the first heat storage 3 is stored into the first heat storage 3 with heat accumulating heat exchange
In material.
6. when the exhaust temperature come out from the first heat storage 3 is higher than 200 DEG C, change the first reversal valve 2.
Reciprocating operation as stated above.
Embodiment two
1. high-temperature shaping phase-change material is 45NaF-15MgF-40MgO used by the present embodiment, medium temperature sizing phase transformation material
Expect for 33MgCl2- 12.24KCl-11.76NaCl-40MgO, low-temperature shaped phase-change material are 52AlCl3-48MgO。
2. combustion gas (methane) and the air preheated by the first heat storage 3 are entered into the first burner 5 and fired in combustion chamber 6
Burn.
3. the tail gas after burning enters the second heat storage 8, waste heat is stored into the phase of the second heat storage 8 with heat accumulating heat exchange
Become in material.
4. when the exhaust temperature come out from the second heat storage 8 is higher than 150 DEG C, change the first reversal valve 2, while open the
Two burners 7；Now the phase-change material in normal temperature air and the second heat storage 8 carries out heat exchange heating, is being burnt with combustion gas (methane)
Burnt in room 6；
5. the tail gas after burning enters the phase transformation material that the first heat storage 3 is stored into the first heat storage 3 with heat accumulating heat exchange
In material.
6. when the exhaust temperature come out from the first heat storage 3 is higher than 150 DEG C, change the first reversal valve 2.
Reciprocating operation as stated above.
The embodiment one and embodiment two provided in the present invention, employs different phase-change materials and carries out heat exchange accumulation of heat, enter
And reflect for different waste heat supply temperatures, it is necessary to which applying working condition could be met using different phase-change materials.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be any
Combined in an appropriate manner in individual or multiple embodiments or example.In addition, in the case of not conflicting, the technology of this area
Different embodiments or example and the feature of different embodiments or example described in this specification can be combined by personnel
And combination.
Claims (10)
1. a kind of multi-level phase change heat storing type energy-saving device, it is characterised in that described device includes：At Regenerative Combustion System and waste heat
Reason system,
The Regenerative Combustion System includes the first reversal valve, heat storage, burner and combustion chamber, and first reversal valve connects respectively
The first import and offgas outlet, and any switching laws between first import and the offgas outlet are connect, are entered by described first
Mouth flows into normal temperature air, and the heat storage is connected with first reversal valve, and the burner is connected with the heat storage, the combustion
Room is burnt to be connected with the burner；
The surplus heat treatment system includes the second reversal valve, current divider, heat storage and interflow device, the second reversal valve connection
Second import, normal temperature air is flowed into by second import or normal-temperature water, second reversal valve are connected with the current divider,
One end of the heat storage is connected with the current divider, and the other end is connected with the interflow device；
S-shaped heat exchange pipeline is provided with the heat storage.
2. multi-level phase change heat storing type energy-saving device according to claim 1, it is characterised in that the heat storage includes first
Heat storage and the second heat storage,
First heat storage is connected by first reversal valve with first import or the offgas outlet；
Second heat storage is connected by first reversal valve with the offgas outlet or first import.
3. multi-level phase change heat storing type energy-saving device according to claim 2, it is characterised in that the burner includes first and burnt
Mouth and the second burner,
First burner is connected with first heat storage；
Second burner is connected with second heat storage；
First burner and second burner are connected to oil and gas switch.
4. multi-level phase change heat storing type energy-saving device according to claim 1, it is characterised in that the current divider includes one-level
Current divider and two level current divider,
The one-level current divider is connected with second reversal valve, and one end of the two level current divider connects with the one-level current divider
Connect, the other end is connected with the heat storage.
5. multi-level phase change heat storing type energy-saving device according to claim 1, it is characterised in that the interflow device includes one-level
Collaborate device, two level interflow device and three-level interflow device,
One end of three-level interflow device is connected with the heat storage, and the other end is connected with two level interflow device, the one-level
Interflow device is connected with two level interflow device.
6. multi-level phase change heat storing type energy-saving device according to claim 5, it is characterised in that the heat storage is multistage phase
Become heat storage.
7. multi-level phase change heat storing type energy-saving device according to claim 6, it is characterised in that the multi-level phase change heat storage
Including multiple thermal storage units,
The thermal storage unit includes high-temperature heat accumulation unit, medium temperature regenerator unit, low-temperature heat accumulating unit.
8. multi-level phase change heat storing type energy-saving device according to claim 7, it is characterised in that
The high-temperature heat accumulation unit is equipped with high temperature phase change material (pcm),
The medium temperature regenerator unit is equipped with medium temperature phase-change material,
The low-temperature heat accumulating unit is equipped with low-temperature phase-change material,
The high-temperature heat accumulation unit, medium temperature regenerator unit and low-temperature heat accumulating unit are in the multi-level phase change heat storage according to edge
Flow of flue gas direction, temperature sequence are arranged in order.
9. multi-level phase change heat storing type energy-saving device according to claim 7, it is characterised in that the thermal storage unit is block
Shape, inside offer duct,
The area of section ratio of the area of section in the duct and the thermal storage unit is 0.2-0.5.
10. multi-level phase change heat storing type energy-saving device according to claim 7, it is characterised in that the high-temperature heat accumulation unit,
A S-shaped heat exchange pipeline, three S-shaped heat exchange pipelines are provided with medium temperature regenerator unit and low-temperature heat accumulating unit
Connection connects, and medium flow direction is opposite with flue gas flow direction in thermal storage unit in S-shaped heat exchange pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952485.8A CN107559877A (en) | 2017-10-13 | 2017-10-13 | Multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952485.8A CN107559877A (en) | 2017-10-13 | 2017-10-13 | Multipurpose modular multistage phase-change heat-storage high-temperature air burning energy saver |
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| Publication Number | Publication Date |
|---|---|
| CN107559877A true CN107559877A (en) | 2018-01-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764734A (en) * | 2019-02-14 | 2019-05-17 | 西安交通大学 | A kind of complementary regenerative apparatus of multistage and method |
| CN112212356A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Multichannel heat accumulation formula air heater |
| CN115420131A (en) * | 2022-09-21 | 2022-12-02 | 西安电子科技大学 | Center difference type heat exchanger and heat exchange performance detection device thereof |
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2017
- 2017-10-13 CN CN201710952485.8A patent/CN107559877A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764734A (en) * | 2019-02-14 | 2019-05-17 | 西安交通大学 | A kind of complementary regenerative apparatus of multistage and method |
| CN109764734B (en) * | 2019-02-14 | 2024-04-16 | 西安交通大学 | Multistage complementary heat storage device and method |
| CN112212356A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Multichannel heat accumulation formula air heater |
| CN115420131A (en) * | 2022-09-21 | 2022-12-02 | 西安电子科技大学 | Center difference type heat exchanger and heat exchange performance detection device thereof |
| CN115420131B (en) * | 2022-09-21 | 2024-04-19 | 西安电子科技大学 | Center differential heat exchanger and heat exchange performance detection device thereof |
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