CN208967833U - A kind of triple channel commutation regenerative air preheater - Google Patents
A kind of triple channel commutation regenerative air preheater Download PDFInfo
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- CN208967833U CN208967833U CN201821532217.7U CN201821532217U CN208967833U CN 208967833 U CN208967833 U CN 208967833U CN 201821532217 U CN201821532217 U CN 201821532217U CN 208967833 U CN208967833 U CN 208967833U
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- heat
- reversing valve
- triple channel
- air preheater
- way reversing
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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
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Abstract
The utility model discloses a kind of triple channel commutation regenerative air preheaters, including three heat exchange units, each heat exchange unit contains the top four-way reversing valve (1) set gradually from the top down, a pair of of Heat Room and lower part four-way reversing valve (4), the pair of Heat Room and contains the first Heat Room (2) and the second Heat Room (3) of left and right settings.The triple channel commutates, and regenerative air preheater structure is simple, and in the application that waste heat of flue gas of heating furnace recyclable device is more preferable, safer, the pressure of realization burner combustion air supply is stable, exhaust gas temperature is adjustable, it is high to reduce discharged nitrous oxides, heat exchange efficiency.
Description
Technical field
The utility model relates to flue gas heat recovery apparatus fields, and particularly a kind of triple channel commutation heat accumulating type is empty
Air preheater.
Background technique
Air preheater used by the recuperation of heat of family more than flame heating furnace flue gas, such as heat pipe-type, tubular type, cast-iron plate type, glass
There is certain disadvantage in the conventional pre-heaters such as glass plate formula, such as: be existed by low-temperature dew point corrosion temperature limiting exhaust gas temperature general control
A variety of originals such as more than dew-point temperature, heat exchange element is perishable, fouling efficiency decline in use, deformed element leaks out, medium goes bad
Because causing to fail, heat exchange efficiency is reduced, and plant maintenance maintenance is frequently and cost is larger.
In recent years petroleum chemical heating furnace using upper development although rotation heat accumulating type air preheater efficiency is higher, equipment fortune
Row is steady, but its equipment revolution figure is big, due to taking up a large area, is especially unsuitable for plant modification application, for the sheet of equipment
Body transport causes difficulty；And the movable sealing structure of revolving body is complicated, the dosage and cost of sealing brush are larger；Equipment investment is excessively high；
It is especially only used for the reheat furnace system of 40MW once, is not suitable for and is used with high-power heating furnace.
A kind of phase difference regenerative air preheater occurred recently, by 8 groups of regenerative chambers and 8 four-way valves switch in turn with
Realize approximate Continuous Heat Transfer, but exist: 1, metal consumption is big, collection flue huge structure；2,8 four-way valves being at least arranged
Control, structure is complicated, and vulnerable part is excessive；3, due to design structure defect, it there are problems that the flue gas " quantified " and air mutually mix,
Reduce heat exchange efficiency influences heating furnace oxygen content again.And another kind of phase difference regenerative air preheater, it is pairs of due to needing
Accumulation of heat cabinet and corresponding regenerative combustion system, investment is big, takes up an area bigger.
Utility model content
In order to solve the problems, such as existing air preheater, structure is complicated.The utility model provides a kind of triple channel commutation storage
Hot type air preheater, triple channel commutation regenerative air preheater structure is simple, in waste heat of flue gas of heating furnace recyclable device
More preferably, safer application realizes that the pressure of burner combustion air supply is stable, exhaust gas temperature is adjustable, reduces nitrogen oxides
Discharge, heat exchange efficiency are high.
The utility model solves that technical application used by its technical problem is novel to be: a kind of triple channel commutation heat accumulating type is empty
Air preheater, including three heat exchange units, each heat exchange unit contain the top four-way set gradually from the top down and change
Contain the first Heat Room and second of left and right settings to valve, a pair of of Heat Room and lower part four-way reversing valve, the pair of Heat Room
Heat Room can exchange heat between the indoor gas of the first heat exchange and the second indoor gas of heat exchange, and top four-way reversing valve is under
Portion's four-way reversing valve contains four interfaces up and down, and the left interface of top four-way reversing valve and the entrance of the first Heat Room connect
It is logical, the right interface of top four-way reversing valve and the outlet of the second Heat Room, the left interface of lower part four-way reversing valve and first
The right interface of the outlet of Heat Room, lower part four-way reversing valve is connected to the entrance of the second Heat Room.
First Heat Room and the second Heat Room are upright tubular structure.
Three heat exchange units are arranged successively along the longitudinal direction.
Heat storage is equipped in first Heat Room and the second Heat Room.
Triple channel commutation regenerative air preheater further includes high-temperature flue gas pipeline, the top of each heat exchange unit
The upper interface of four-way reversing valve is connected to high-temperature flue gas pipeline.
Triple channel commutation regenerative air preheater further includes hot air duct, the top four-way of each heat exchange unit
The lower interface of reversal valve is connected to hot air duct.
Triple channel commutation regenerative air preheater further includes cold air duct, the lower part four-way of each heat exchange unit
The upper interface of reversal valve is connected to cold air duct.
Triple channel commutation regenerative air preheater further includes low-temperature flue gas pipeline, the lower part of each heat exchange unit
The lower interface of four-way reversing valve is connected to low-temperature flue gas pipeline.
Triple channel commutation regenerative air preheater further includes steel structure frame, and three heat exchange units are both secured to
In steel structure frame.
Platform ladder is fixed with outside steel structure frame.
The beneficial effects of the utility model are:
1, the supply of burner combustion air is realized in the application more preferable, safer in waste heat of flue gas of heating furnace recyclable device
Pressure is stable, exhaust gas temperature is adjustable, it is high to reduce discharged nitrous oxides, heat exchange efficiency.
2, it using corrosion-resistant Thermal storage ceramic material as heat exchange element, may be implemented for flue-gas temperature to be down to low temperature dew point corruption
Temperature is lost hereinafter, even as low as 60 DEG C are discharged, and adequately using Mist heat recovering, not only recovered flue gas is damp and hot is also recycled
Latent heat, saves fuel, and the heating furnace entirety thermal efficiency increases substantially.
3, accumulation of heat original part uses corrosion resistant Extruded Monolithic Celluar Ceramics, and intension specially develops BDY-100 catalyst, for dropping
Low NOx NOx reduces NOx emission, is the original creation characteristic that the technology is different from other heat recovery technologies.
4, using brush seal form, effectively prevent fume side and air side from altering wind leakage, device efficiency is higher.
5, meet the preheater feature of the industries traditional form such as petrochemical industry, metallurgy, electric power, counter-flow heat exchange, flue gas and air
Channel is fixed, and equipment land occupation is less, and integration of equipments degree is higher, and cost is relatively low, easy to operate.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Fig. 1 is the working principle diagram of triple channel commutation regenerative air preheater described in the utility model.
Fig. 2 is the use state diagram of triple channel commutation regenerative air preheater described in the utility model.
Fig. 3 is the main view of triple channel commutation regenerative air preheater described in the utility model.
Fig. 4 is the left view of triple channel commutation regenerative air preheater described in the utility model.
1, top four-way reversing valve；2, the first Heat Room；3, the second Heat Room；4, lower part four-way reversing valve；5, high temperature cigarette
Feed channel；6, hot air duct；7, cold air duct；8, low-temperature flue gas pipeline；9, steel structure frame；10, platform ladder；
11, heating furnace；12, air blower；13, air filter screen；14, air-introduced machine；15, chimney.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of triple channel commutation regenerative air preheater, including three heat exchange units, each heat exchange unit contain
There are the top four-way reversing valve 1 set gradually from the top down, a pair of of Heat Room and lower part four-way reversing valve 4, the pair of heat exchange
The first Heat Room 2 and the second Heat Room 3 of left and right settings are contained in room, in the gas and the second Heat Room 3 in the first Heat Room 2
It can exchange heat between gas, top four-way reversing valve 1 and lower part four-way reversing valve 4 are containing four interfaces up and down, top
The left interface of four-way reversing valve 1 is connected to the entrance of the first Heat Room 2, the right interface of top four-way reversing valve 1 and the second heat exchange
The outlet of room 3, the outlet of the left interface of lower part four-way reversing valve 4 and the first Heat Room 2, lower part four-way reversing valve 4
Right interface be connected to the entrance of the second Heat Room 3, as shown in Fig. 1 to Fig. 4.
Wherein, top four-way reversing valve 1 and lower part four-way reversing valve 4 are uniformly existing product, 1 He of top four-way reversing valve
The construction of lower part four-way reversing valve 4 is identical, and the effect of top four-way reversing valve 1 and lower part four-way reversing valve 4 is to realize fluid
Commutation conversion.
Specifically, the first circulation status of top four-way reversing valve 1 are as follows: the first fluid is from top four-way reversing valve 1
Upper interface enter and be discharged from the lower interface of top four-way reversing valve 1, second of fluid is from the right side of top four-way reversing valve 1
Interface enters and is discharged from the left interface of top four-way reversing valve 1.Second of circulation status of top four-way reversing valve 1 are as follows: the
A kind of fluid enters from the upper interface of top four-way reversing valve 1 and is discharged from the left interface of top four-way reversing valve 1, second of stream
Body enters from the right interface of top four-way reversing valve 1 and is discharged from the lower interface of top four-way reversing valve 1.Top four-way reversing valve
1 effect is the conversion realized between the first circulation status and second of circulation status.
The first circulation status of lower part four-way reversing valve 4 are as follows: upper interface of the first fluid from lower part four-way reversing valve 4
Into and from lower part four-way reversing valve 4 lower interface discharge, second of fluid from the left interface of lower part four-way reversing valve 4 enter simultaneously
It is discharged from the right interface of lower part four-way reversing valve 4.Second of circulation status of lower part four-way reversing valve 4 are as follows: the first fluid from
The upper interface of lower part four-way reversing valve 4, which enters, to be simultaneously discharged from the right interface of lower part four-way reversing valve 4, and second of fluid is from top four
The left interface of logical reversal valve 1 enters and is discharged from the lower interface of top four-way reversing valve 1.The effect of lower part four-way reversing valve 4 is real
The now conversion between the first circulation status and second of circulation status.
In the present embodiment, the first Heat Room 2 and the second Heat Room 3 are upright tubular structure, in order to facilitate first
The heat exchange between the gas in gas and the second Heat Room 3 in Heat Room 2, the first Heat Room 2 and the second Heat Room 3 share one
One piece of common heat storage is equipped in block side wall, the first Heat Room 2 and the second Heat Room 3.Triple channel commutation regenerative type air
Preheater further includes steel structure frame 9, and three heat exchange units are both secured in steel structure frame 9.It is solid outside steel structure frame 9
Surely there is platform ladder 10.Manhole door is additionally provided on first Heat Room 2 and the second Heat Room 3.
In the present embodiment, three heat exchange units are arranged successively along the longitudinal direction.Triple channel commutation heat accumulating type is empty
Air preheater further includes high-temperature flue gas pipeline 5 and hot air duct 6, the top four-way reversing valve 1 of each heat exchange unit it is upper
Interface is connected to high-temperature flue gas pipeline 5.The lower interface of the top four-way reversing valve 1 of each heat exchange unit is and hot air pipe
Road 6 is connected to.High-temperature flue gas pipeline 5 and about 6 hot air duct are arranged in parallel, and hot air duct 6 is located at 1 He of top four-way reversing valve
Between the pair of Heat Room.
In the present embodiment, triple channel commutation regenerative air preheater further includes cold air duct 7 and low-temperature flue gas pipe
The upper interface in road 8, the lower part four-way reversing valve 4 of each heat exchange unit is connected to cold air duct 7.Each heat exchange is single
The lower interface of the lower part four-way reversing valve 4 of member is connected to low-temperature flue gas pipeline 8.Cold air duct 7 and about 8 low-temperature flue gas pipeline
It is arranged in parallel, cold air duct 7 is between the pair of Heat Room and lower part four-way reversing valve 4, as shown in Figure 3 and Figure 4.
It in order to facilitate understanding and describes, absolute positional relation is used in the utility model and is stated, orientation therein
Word is " preceding " to be indicated perpendicular to the direction on the inside of Fig. 4 paper, " rear " to indicate that, perpendicular to the direction on the outside of Fig. 4 paper, " left side " indicates Fig. 4
Left direction, " right side " indicates the right direction of Fig. 4, and "upper" indicates the upper side direction of Fig. 4, and "lower" indicates the downside direction of Fig. 4.
The observation visual angle that the utility model uses user is described, but the above-mentioned noun of locality cannot understand or be not construed as to this reality
With the restriction of novel protected range.
First Heat Room 2 and the second Heat Room 3 not only have heat storage, and there are also the BDY-100 catalyst for reducing NOx.
The high-temperature flue gas pipeline 5 and hot air duct 6 on top are known as hot end；The cold air duct 7 and low-temperature flue gas pipeline 8 of lower part are referred to as cold
End.A Heat Room walks flue gas in first Heat Room 2 and the second Heat Room 3, another Heat Room walks air, mutual according to the period
Switching.The switching of two media is completed by reversal valve (top four-way reversing valve 1 and lower part four-way reversing valve 4), the drive of reversal valve
Dynamic to use pneumatic cylinder, the mobile friction pair in reversal valve is prevented flue gas, air leakage, is altered pressure using brush seal；Cylinder
Action command is controlled by control cabinet and travel switch etc., and switching cycle is controlled by modular program in control cabinet, works as flue gas heat exchange
When measuring larger, switching cycle is adjusted, frequency is accelerated.
The course of work of triple channel commutation regenerative air preheater is described below.
Wherein, three heat exchange units are followed successively by first heat exchange unit, second heat exchange unit and third heat exchange
Unit.Commutation control sequence are as follows: the top four-way reversing valve 1 and lower part four-way reversing valve 4 of first heat exchange unit start simultaneously
Commutation, after 25S-50S, the top four-way reversing valve 1 and lower part four-way reversing valve 4 of second heat exchange unit start commutation simultaneously,
After 25S-50S, the top four-way reversing valve 1 and lower part four-way reversing valve 4 of third heat exchange unit start commutation simultaneously, so far,
75S-150S is a cycle, and the next period recycles since first group and so on again.Between time between each heat exchange unit
Every and cycle set, according to heating furnace 11 operating load size and smoke evacuation index request, adjusted in control cabinet modular program
And setting.The length in period adjusts setting according to actual needs, when needing exhaust gas temperature low, shortens cycle time, that is, increases
The heat exchange area of unit time, increases heat exchange power；Conversely, increasing cycle time when needing exhaust gas temperature higher.
In fig. 1 and 2, containing heating furnace 11, air blower 12, air filter screen 13, air-introduced machine 14, chimney 15.It is commutating
In regenerative air preheater, by the flow direction of the four-way Vavle switching air and flue gas that use in pairs, distinguish flue gas and air
In turn pass through flue gas heat exchange room and air heat-exchange room；The indoor heat storage that exchanges heat uses ceramic honey comb, increases accumulation of heat
Surface area per unit volume product, high-temperature flue gas passes through heat storage runner and transfers heat to surface of heat accumulator, when the heat storage of high temperature goes to sky
When gas enters, cold air passes through the heat that heat storage runner takes away heat storage.Commutation heat-accumulating air preheating system is shown in schematic diagram:
(heat exchange unit corresponds to two Heat Rooms, and a heat exchange unit is illustrated only in figure, and commutation heat accumulation type preheater is changed by three
Hot cell is constituted, and is detailed in systematic schematic diagram).
The above, only specific embodiment of the utility model cannot limit the range that utility model is implemented, institute with it
With the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection scope and modification, should all still fall within
The scope that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical application
Between novel, technical application it is novel it is novel with technical application between use can be freely combined.
Claims (10)
- A kind of regenerative air preheater 1. triple channel commutates, which is characterized in that triple channel commutation regenerative air preheater Including three heat exchange units, each heat exchange unit contains the top four-way reversing valve (1) set gradually from the top down, one Exchange hot cell and lower part four-way reversing valve (4), the first Heat Room (2) and second that the pair of Heat Room contains left and right settings change Hot cell (3) can exchange heat between the gas in gas and the second Heat Room (3) in the first Heat Room (2), the commutation of top four-way Valve (1) and lower part four-way reversing valve (4) are containing four interfaces up and down, the left interface of top four-way reversing valve (1) and the The entrance of one Heat Room (2) is connected to, the right interface of top four-way reversing valve (1) and the outlet of the second Heat Room (3), lower part The left interface of four-way reversing valve (4) and the outlet of the first Heat Room (2), the right interface of lower part four-way reversing valve (4) and The entrance of two Heat Rooms (3) is connected to.
- The regenerative air preheater 2. triple channel according to claim 1 commutates, which is characterized in that the first Heat Room (2) It is upright tubular structure with the second Heat Room (3).
- The regenerative air preheater 3. triple channel according to claim 1 commutates, which is characterized in that three heat exchange are single Member is arranged successively along the longitudinal direction.
- The regenerative air preheater 4. triple channel according to claim 1 commutates, which is characterized in that the first Heat Room (2) With the second Heat Room (3) in be equipped with heat storage.
- The regenerative air preheater 5. triple channel according to claim 1 commutates, which is characterized in that triple channel commutation stores Hot type air preheater further includes high-temperature flue gas pipeline (5), is connect on the top four-way reversing valve (1) of each heat exchange unit Mouth is connected to high-temperature flue gas pipeline (5).
- The regenerative air preheater 6. triple channel according to claim 1 commutates, which is characterized in that triple channel commutation stores Hot type air preheater further includes hot air duct (6), and the lower interface of the top four-way reversing valve (1) of each heat exchange unit is equal It is connected to hot air duct (6).
- The regenerative air preheater 7. triple channel according to claim 1 commutates, which is characterized in that triple channel commutation stores Hot type air preheater further includes cold air duct (7), and the upper interface of the lower part four-way reversing valve (4) of each heat exchange unit is equal It is connected to cold air duct (7).
- The regenerative air preheater 8. triple channel according to claim 1 commutates, which is characterized in that triple channel commutation stores Hot type air preheater further includes low-temperature flue gas pipeline (8), is connect under the lower part four-way reversing valve (4) of each heat exchange unit Mouth is connected to low-temperature flue gas pipeline (8).
- The regenerative air preheater 9. triple channel according to claim 1 commutates, which is characterized in that triple channel commutation stores Hot type air preheater further includes steel structure frame (9), and three heat exchange units are both secured in steel structure frame (9).
- The regenerative air preheater 10. triple channel according to claim 9 commutates, which is characterized in that steel structure frame (9) It is fixed with platform ladder (10) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821532217.7U CN208967833U (en) | 2018-09-19 | 2018-09-19 | A kind of triple channel commutation regenerative air preheater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821532217.7U CN208967833U (en) | 2018-09-19 | 2018-09-19 | A kind of triple channel commutation regenerative air preheater |
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| CN208967833U true CN208967833U (en) | 2019-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425894A (en) * | 2019-09-03 | 2019-11-08 | 苏州正益诚新能源科技有限公司 | A kind of smoke circulating system |
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2018
- 2018-09-19 CN CN201821532217.7U patent/CN208967833U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425894A (en) * | 2019-09-03 | 2019-11-08 | 苏州正益诚新能源科技有限公司 | A kind of smoke circulating system |
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