CN106969374A - A kind of combined air air preheater - Google Patents
A kind of combined air air preheater Download PDFInfo
- Publication number
- CN106969374A CN106969374A CN201710294539.6A CN201710294539A CN106969374A CN 106969374 A CN106969374 A CN 106969374A CN 201710294539 A CN201710294539 A CN 201710294539A CN 106969374 A CN106969374 A CN 106969374A
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- cast iron
- iron plate
- temperature section
- row
- section cast
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- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 218
- 239000011521 glass Substances 0.000 claims abstract description 72
- 239000003546 flue gas Substances 0.000 claims abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a kind of combined air air preheater, belong to technical field of petrochemical industry.The preheater includes main body frame, high temperature section cast iron plate row, middle-temperature section cast iron plate row, low-temperature zone cast iron plate row, glass tube preheater, heat-insulation layer and deflection plate；High temperature section cast iron plate row, middle-temperature section cast iron plate row, low-temperature zone cast iron plate row and glass tube preheater are vertically installed on main body frame from high to low, and the gap in the gap and glass tube preheater between the perpendicular fin that flue gas is arranged by high temperature section cast iron plate, middle-temperature section cast iron plate row and low-temperature zone cast iron plate are arranged between glass tube is vertically discharged from exhanst gas outlet；Air intake of the air through glass tube preheater enters, and reaches the deflection plate of the other end, and one end that low-temperature zone cast iron plate is arranged is entered after baffling, and middle-temperature section cast iron plate row is folded into after other end outflow, most exports and flows out through high temperature section cast iron plate air-discharging afterwards.The present invention arranges the combination to form multiple temperature sections using the cast iron plate of different temperatures section, realizes the heat exchange of full temperature section.
Description
Technical field
The present invention relates to a kind of air preheater device, and in particular to the Combined air that a kind of petroleum chemical industry is used
Pre-heater apparatus, belongs to technical field of petrochemical industry.
Background technology
Domestic petroleum chemical industry can produce a large amount of flue gases with high-temperature residual heat in production process, in order to reach energy-conservation
Purpose to the waste heat of these flue gases, it is necessary to carry out recycling.Therefore air preheater can be widely applied, existing air is pre-
The structure type of hot device mainly has following several：Beam tube type, heat pipe-type, the combination of board-like, cast iron type or these four modes.More than
There is following several problems in the prolonged application of chemical products production field in the heat exchanger of several ways：
1st, the heat exchange of full temperature section (600-110 DEG C) can not be realized；
2nd, the low temperature dew condensation phenomenon that can not effectively avoid air preheater fume side from occurring；
3rd, because condensation is combined generation sour water with flue gas sulfide to metallic material corrosion problem；
4th, the metal surface dust scale problems to internal low-temperature zone can not be eliminated effectively；
5th, the service life cycle is short, generally 3-5, and maintenance and local repair are not easily accomplished after product failure；
6th, heat exchanger replacement frequency is high, and operating cost is high, increases entreprise cost and burden.
The content of the invention
In view of this, the invention provides a kind of combined air air preheater, shape is arranged using the cast iron plate of different temperatures section
Into the combination of multiple temperature sections, the heat exchange of full temperature section is realized.
A kind of combined air air preheater, the preheater includes main body frame, high temperature section cast iron plate row, middle-temperature section cast iron plate
Row, low-temperature zone cast iron plate row, glass tube preheater, heat-insulation layer and deflection plate；
The high temperature section cast iron plate row, the rectangular housing of middle-temperature section cast iron plate row and low-temperature zone cast iron plate the row insertion for before and after
Structure, its outer surface has perpendicular fin vertically, and shell structure is internally formed air duct；High temperature section cast iron plate arrange and
The inner surface of middle-temperature section cast iron plate row has the horizontal fin piece of horizontal direction, during the density for the horizontal fin piece that high temperature section cast iron plate is arranged is more than
Temperature section cast iron plate is arranged, the inner surface non-finned of low-temperature zone cast iron plate row；The high temperature section cast iron plate is arranged, middle-temperature section cast iron plate is arranged,
Low-temperature zone cast iron plate is arranged and glass tube preheater is vertically installed on main body frame from high to low, high temperature section cast iron plate row, middle temperature
The side filling heat insulating wall of section cast iron plate row, low-temperature zone cast iron plate row and glass tube preheater, the deflection plate are arranged on two-by-two
At the air duct of adjacent component, one end of glass tube preheater is air intake, other end correspondence deflection plate, glass tube preheating
The lower section of device is exhanst gas outlet, one end correspondence deflection plate of the high temperature section cast iron plate row, and the other end is air outlet slit, high temperature section
The top of cast iron plate row is smoke inlet, and flue gas is arranged by high temperature section cast iron plate, middle-temperature section cast iron plate is arranged and low-temperature zone cast iron plate
Vertically discharged from exhanst gas outlet in gap in gap and glass tube preheater between the perpendicular fin of row between glass tube；It is empty
Air intake of the gas through glass tube preheater enters, and reaches the deflection plate of the other end, and low-temperature zone cast iron plate is entered after baffling and is arranged
One end, middle-temperature section cast iron plate row is folded into after other end outflow, most exports and flows out through high temperature section cast iron plate air-discharging afterwards.
Further, controllable temperature rise is realized in combination the need for different temperature section cast iron plates are arranged according to control metal wall surface temperature
Change.
Further, for the ease of the cleaning to glass tube exterior surface laying dust in glass tube preheater, in glass tube preheating
Wash tub pipe is installed between device and low-temperature zone cast iron plate row.
Further, the high temperature section cast iron plate row, middle-temperature section cast iron plate row and low-temperature zone cast iron plate row are respectively by two groups
Constituted in the high temperature section cast iron plate, middle-temperature section cast iron plate and low-temperature zone cast iron plate of specular, the high temperature section cast iron plate, middle temperature
The lateral surface of section cast iron plate and low-temperature zone cast iron plate is machined with perpendicular fin vertically；High temperature section cast iron plate, middle-temperature section
The density of horizontal fin piece is more than middle-temperature section cast iron on the horizontal fin piece of the inner surface processing of cast iron plate in the horizontal direction, high temperature section cast iron plate
Plate；The two ends of high temperature section cast iron plate, middle-temperature section cast iron plate and low-temperature zone cast iron plate are machined with seal groove, corresponding joint face
Connecting hole is processed, high temperature section cast iron plate, middle-temperature section cast iron plate and low-temperature zone cast iron plate form two after being docked two-by-two by connecting hole
Hold in the seal groove that closing is formed on open rectangular configuration component, rectangular configuration component, seal groove and load sealing strip to realize
The sealing of air duct and exhaust gases passes；Two rectangular configuration components form high respectively after being fixedly connected by the connecting hole at two ends
Temperature section cast iron plate row, middle-temperature section cast iron plate row and low-temperature zone cast iron plate row.
Further, the sealing strip uses ceramic fibre bar.
Further, the glass tube preheater includes installing plate, sealing plate, sealing ring and glass tube；The installing plate
It is fixed together with sealing plate, the glass tube realizes sealing peace by the mounting hole on sealing ring and installing plate and sealing plate
Dress so that do not produce gas leakage when the flue gas with pressure is by glass pipe outer wall.
Beneficial effect：
1st, the present invention is using the combining form of cast iron plate and glass tube preheater, the cast iron changed by three kinds of dissimilar tooth forms
Plate row and the combination of glass pipeline section preheater of plate, can effectively control the wall for each rank temperature section temperature change that air flows through
Temperature；Realize the metal wall temperature-controllable heat exchange of the full temperature section of heat exchanger.
2nd, the application that the present invention is combined by cast iron plate with glass tube causes heat exchanger heat exchange efficiency to greatly improve, flue gas temperature
Degree is controllable lower, reduces temperature loss, improves energy conversion effect, reduce energy waste.
3rd, the low-temperature zone that the present invention is flowed through in flue gas employs glass tube and instead of traditional metal materials, through-flow in flue gas
During, the problem of effectively avoiding causing material corrosion because of the low temperature condensation that temperature change occurs greatly inside preheater.
4th, present invention utilizes the smooth inner side fin consistent with flow of flue gas direction of cast iron plate and glass pipe surface light
The sliding characteristic for being difficult adhesive dust, when realizing inside smoke and flowing through each temperature section, cast iron plate smooth inner side fin and glass tube
Outer surface can effectively be removed to dust fouling.
5th, the application that the present invention is combined by cast iron plate with glass tube, service life is significantly prolonged than other traditional heat exchangers
It is long, and significantly alleviate the gross weight of heat exchanger.
6th, the application that the present invention is combined by cast iron plate with glass tube, passes through cast iron plate high temperature section, cast iron plate middle-temperature section, casting
Iron plate low-temperature zone, the different of the multiple temperature sections of glass tube low temp section install combination, and structure type installs simple, and preheater is not volatile
Effect, easily realizes local repair and the system overhaul in later stage；Product repairing and local repair is set easily to realize.
7th, the present invention is used as filling of the sealing strip to cast iron plate joint gap effectively by the use of ceramic fibre bar, it is ensured that cast iron plate
Between the gap that connects it is sufficiently sealed, in the case where ensureing that flue gas and air loop are completely airtight, can absorb because of temperature change
Any small expansion and contraction between the continuous cast iron plate row caused, absorb the thermal expansion between metallic plate, it is to avoid preheater
What inside was produced is difficult to stress and the gap of adjustment control, it is ensured that heat exchanger reliably working and can reach efficient heat exchange.
Brief description of the drawings
Fig. 1 is overall structure diagram (front view+left view) of the invention；
Fig. 2 arranges scheme of installation for the high temperature section cast iron plate of the present invention；
Fig. 3 arranges scheme of installation for the middle-temperature section cast iron plate of the present invention；
Fig. 4 arranges scheme of installation for the low-temperature zone cast iron plate of the present invention；
Fig. 5 is glass pipeline section scheme of installation of the invention；
Fig. 6 is high temperature section cast iron plate part drawing of the invention；
Fig. 7 is middle-temperature section cast iron plate part drawing of the invention；
Fig. 8 is low-temperature zone cast iron plate part drawing of the invention；
Wherein, 1- high temperature sections cast iron plate is arranged；2- middle-temperature sections cast iron plate is arranged；3- low-temperature zones cast iron plate is arranged；4- glass tubes are preheated
Device；5- main body frames；6- heat-insulation layers；7- deflection plates；8- smoke inlet interfaces；9- air air-out interfaces；10- wash tub pipes；11-
Air air intake interface；12- exhanst gas outlet interfaces；13- high temperature section cast iron plates；14- connecting bolts；15- nuts；16- packing rings；17-
Sealing strip；18- middle-temperature section cast iron plates；19- low-temperature zone cast iron plates；20- glass tube installing plates；21- glass tubes；22- sealing rings；
23- sealing plates；24- horizontal fin pieces；25- erects fin；26- seal grooves；27- reinforcements, 28- connecting holes.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the invention provides a kind of combined air air preheater, the preheater includes main body frame 5, height
Temperature section cast iron plate row 1, middle-temperature section cast iron plate row 2, low-temperature zone cast iron plate row 3, glass tube preheater 4, heat-insulation layer 6, the and of deflection plate 7
Wash tub pipe 10；
High temperature section cast iron plate row 1, middle-temperature section cast iron plate row 2, low-temperature zone cast iron plate row 3 and glass tube preheater 4 by height to
Low to be vertically installed on main body frame 5, wash tub pipe 10 is arranged between glass tube preheater 4 and low-temperature zone cast iron plate row 3, high
Temperature section cast iron plate row 1, middle-temperature section cast iron plate arrange the side filling heat insulating wall of 2, low-temperature zone cast iron plate row 3 and glass tube preheater 4
6, deflection plate 7 is arranged at the air duct of adjacent component two-by-two, and one end of glass tube preheater 4 is air intake, is connected with
Air air intake interface 11, other end correspondence deflection plate 7, the lower section of glass tube preheater is exhanst gas outlet, is connected with exhanst gas outlet
Interface, one end another piece of deflection plate 7 of correspondence of high temperature section cast iron plate row 1, the other end is air outlet slit, is connected with air air-out and connects
Mouth 9, the top of high temperature section cast iron plate row 1 is smoke inlet, is connected with smoke inlet interface 8, flue gas passes through high temperature section cast iron plate
Row 1, middle-temperature section cast iron plate row 2 and low-temperature zone cast iron plate row 3 perpendicular fin between gap and glass tube preheater 4 in glass tube it
Between gap vertically from exhanst gas outlet discharge；Air intake of the air through glass tube preheater 4 enters, and reaches the other end
Deflection plate 7, one end that low-temperature zone cast iron plate arranges 3 is entered after baffling, middle-temperature section cast iron plate row is folded into after other end outflow
2, most arrange the outflow of 1 air outlet slit through high temperature section cast iron plate afterwards.
As shown in accompanying drawing 2,3 and 4, before high temperature section cast iron plate row 1, middle-temperature section cast iron plate row 2 and low-temperature zone cast iron plate row 3 are
The rectangular case structure of insertion afterwards, its outer surface has perpendicular fin 25 vertically, and shell structure is internally formed air and led to
Road；The inner surface that high temperature section cast iron plate is arranged and middle-temperature section cast iron plate is arranged has the horizontal fin piece 24 of horizontal direction, high temperature section cast iron plate
The density of the horizontal fin piece 24 of row 1 is more than middle-temperature section cast iron plate row 2, the inner surface non-finned of low-temperature zone cast iron plate row 4.
As shown in accompanying drawing 6,7 and 8, high temperature section cast iron plate row 1, middle-temperature section cast iron plate row 2 and low-temperature zone cast iron plate row 3 distinguish
Constituted by two groups in high temperature section cast iron plate 13, middle-temperature section cast iron plate 18 and the low-temperature zone cast iron plate 19 of specular, high temperature section casting
The lateral surface of iron plate, middle-temperature section cast iron plate and low-temperature zone cast iron plate is machined with perpendicular fin 25 vertically；High temperature section is cast
Iron plate, the inner surface of middle-temperature section cast iron plate process the density of horizontal fin piece on horizontal fin piece 24 in the horizontal direction, high temperature section cast iron plate
More than middle-temperature section cast iron plate；The two ends of high temperature section cast iron plate, middle-temperature section cast iron plate and low-temperature zone cast iron plate are machined with seal groove
26, connecting hole 28,19 liang of high temperature section cast iron plate 13, middle-temperature section cast iron plate 18 and low-temperature zone cast iron plate are processed on corresponding joint face
The rectangular configuration component of both ends open is formed after two docking, passes through connecting hole 28 and connecting bolt 14, nut 15 and packing ring 16
It is fixed together, is formed on rectangular configuration component in the seal groove 26 of closing, seal groove and load sealing strip to realize air
The sealing of passage and exhaust gases passes；Connecting hole 28 and connecting bolt 14, nut 15 that two rectangular configuration components pass through two ends
High temperature section cast iron plate row 1, middle-temperature section cast iron plate row 2 and low-temperature zone cast iron plate row 3 are formed after being fixedly connected with packing ring 16 respectively.
In order to increase bonding strength, high temperature section cast iron plate 13, middle-temperature section cast iron plate 18 and low-temperature zone cast iron plate 19 are in length
The reinforcement 27 of triangle is cast with the connecting portion in direction.
As shown in Figure 5, glass tube preheater 4 includes installing plate 20, sealing plate 23, sealing ring 22 and glass tube 21；It is close
The material of shrouding 23 uses polytetrafluoroethylene (PTFE).
After installing plate 20 and sealing plate 23 are fixed with pulling rivet, hold successfully hole installing plate 20 alignd with sealing plate 23 after, general
The perforate of sealing plate 23；By sealing ring 22 through and be loaded and be fixed on the installing plate 20 of mirror image each other and sealing plate 23；By glass
Glass pipe 21 passes through the sealing ring 22 of both sides, reach the sealing rings 22 of glass tube 21 and both sides, sealing ring 22 and sealing plate 23,
Close contact between sealing plate 23 and installing plate 21 reaches integral sealing；So that the flue gas with certain pressure passes through glass tube
Gas leakage is not produced during 21 outer wall；The both ends of glass tube 21 are connected with air duct.
Exchange heat operation principle：High-temperature flue gas is flowed into the smoke inlet interface 8 being attached thereto by flue and enters originally compound
Formula preheater, high-temperature flue gas flow through vertically downward, successively high temperature section cast iron plate row 1 each cast iron plate perpendicular fin 25 in wing wall,
The fume side of each cast iron plate of middle-temperature section cast iron plate row 2 erects wing wall in fin 25, the cigarette of each cast iron plate of low-temperature zone cast iron plate row 3
In the perpendicular fin in gas side after wing wall, the pipe outer wall of each glass tube 21 of glass pipeline section preheater 4, flowed out by exhanst gas outlet interface 12,
Further processing is treated after into low-temperature flue gas pipeline.The perpendicular fin 25 of the cast iron plate of high temperature section cast iron plate row 1 will absorb high temperature cigarette
The heat of gas is transmitted to the horizontal fin piece 24 in outside, realizes in the air that outside is conducted heat under maximum heat transfer area simultaneously
The air for flowing through horizontal fin piece 24 is heated；The perpendicular fin 25 of the cast iron plate of middle-temperature section cast iron plate row 2 will be absorbed by high temperature section casting
The heat of flue gas after the cooling of iron plate row 1 is transmitted to the horizontal fin piece 24 of air side, realizes heat under maximum heat transfer area
It is transmitted in the air in outside and heats the air for flowing through horizontal fin piece 24；The perpendicular fin of the cast iron plate of low-temperature zone cast iron plate row 3
The flue gas heat absorbed after middle-temperature section cast iron plate arranges 2 coolings is transmitted to horizontal fin piece 24 by 25, is realized in maximum heat-transfer area
Conducted heat under product in the air in outside and heat the air for flowing through horizontal fin piece 24；Dropped by low-temperature zone cast iron plate row 3
Flue-gas temperature after temperature is close to dew-point temperature, and waste heat is transmitted to glass tube 21 by low-temperature flue gas after flowing through glass pipeline section preheater 4
In the air of interior survey, the air for flowing through glass tube 21 is continued to heat, the temperature-fall period of high-temperature flue gas is completed.By three drops
The flue-gas temperature of temperature is controlled in claimed range, to greatest extent by waste heat recovery, reduces the loss of energy.
Cryogenic air after flowing into air air intake interface 11, flows through glass tube preheater 4 successively by air inlet pipeline
Flowed out after each inwall of glass tube 21,3 air inlet side is arranged into low-temperature zone cast iron plate, flow through the nothing of low-temperature zone cast iron plate row 3
The air flow channel of fin, the outlet side for arranging 3 by low-temperature zone cast iron plate flows out, by entering middle-temperature section cast iron after the baffling of deflection plate 7
After the air inlet side of plate row 2, the horizontal fin piece 24 for each cast iron plate for flowing through middle-temperature section cast iron plate row 2,3 are arranged by middle-temperature section cast iron plate
Outlet side, the air inlet side of high temperature section cast iron plate row 1 is entered by deflection plate 7, each casting of high temperature section cast iron plate row 1 is flowed through
The air side horizontal fin piece 24 of iron plate, the high temperature air pipeline of outside is entered through air air-out interface 9.
Flow through the air temperature variations situation of composite pre-heater：
The temperature change of air is with cooling high-temperature fume on the contrary, flowing through the air of the glass inside pipe wall of glass tube preheater 4
Enter after being heated after low-temperature zone cast iron plate row 3, flowed through the air side plate heating of the cast iron plate after the flue gas of low-temperature zone；
Air after being heated enters middle-temperature section cast iron plate row 2 along air duct；Flowed through the cast iron after the flue gas of middle-temperature section
The horizontal fin piece 24 of plate continues to heat；Air after being heated continues into high temperature section cast iron plate row 1 along air duct, continues quilt
The horizontal fin piece 24 of high temperature section cast iron plate 13 is heated, and enters high temperature air through air air-out interface 9 by the high temperature air of heating for multiple times
Pipeline, completes the heated process of Cryogenic air.By to cast iron plate high temperature section, cast iron plate middle-temperature section, cast iron plate low-temperature zone,
The size control of horizontal fin density, realizes and completes full temperature on the various combination and cast iron plate of the multiple temperature sections of glass tube low temp section
The heat exchange of section.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of combined air air preheater, it is characterised in that the preheater include main body frame, high temperature section cast iron plate row, in
Temperature section cast iron plate row, low-temperature zone cast iron plate row, glass tube preheater, heat-insulation layer and deflection plate；
The high temperature section cast iron plate row, the rectangular housing knot of middle-temperature section cast iron plate row and low-temperature zone cast iron plate the row insertion for before and after
Structure, its outer surface has perpendicular fin vertically, and shell structure is internally formed air duct；High temperature section cast iron plate is arranged with
The inner surface of temperature section cast iron plate row has the horizontal fin piece of horizontal direction, and the density of the horizontal fin piece of high temperature section cast iron plate row is more than middle temperature
Section cast iron plate row, the inner surface non-finned of low-temperature zone cast iron plate row；The high temperature section cast iron plate is arranged, middle-temperature section cast iron plate is arranged, low
Temperature section cast iron plate is arranged and glass tube preheater is vertically installed on main body frame from high to low, high temperature section cast iron plate row, middle-temperature section
The side filling heat insulating wall of cast iron plate row, low-temperature zone cast iron plate row and glass tube preheater, the deflection plate are arranged on two two-phases
At the air duct of adjacent part, one end of glass tube preheater is air intake, other end correspondence deflection plate, glass tube preheater
Lower section be exhanst gas outlet, one end correspondence deflection plate of high temperature section cast iron plate row, the other end is air outlet slit, high temperature section casting
The top of iron plate row is smoke inlet, and flue gas is arranged by high temperature section cast iron plate, middle-temperature section cast iron plate row and low-temperature zone cast iron plate arrange
Perpendicular fin between gap and glass tube preheater in gap between glass tube vertically discharged from exhanst gas outlet；Air
Air intake through glass tube preheater enters, and reaches the deflection plate of the other end, enters what low-temperature zone cast iron plate was arranged after baffling
One end, folds into middle-temperature section cast iron plate row after other end outflow, most exports and flows out through high temperature section cast iron plate air-discharging afterwards.
2. a kind of combined air air preheater as claimed in claim 1, it is characterised in that different temperature section cast iron plate rows are according to control
Controllable temperature rise change is realized in combination the need for metal wall surface temperature processed.
3. a kind of combined air air preheater as claimed in claim 1 or 2, it is characterised in that in glass tube preheater and low
Wash tub pipe is installed between temperature section cast iron plate row.
4. a kind of combined air air preheater as claimed in claim 1, it is characterised in that the high temperature section cast iron plate row, in
Temperature section cast iron plate is arranged and low-temperature zone cast iron plate arrange respectively by two groups in the high temperature section cast iron plate of specular, middle-temperature section cast iron plate and
Low-temperature zone cast iron plate is constituted, and the lateral surface of the high temperature section cast iron plate, middle-temperature section cast iron plate and low-temperature zone cast iron plate is machined with
Perpendicular fin vertically；High temperature section cast iron plate, the inner surface of middle-temperature section cast iron plate process horizontal fin piece in the horizontal direction, high
The density of horizontal fin piece is more than middle-temperature section cast iron plate on temperature section cast iron plate；High temperature section cast iron plate, middle-temperature section cast iron plate and low-temperature zone casting
The two ends of iron plate, which are machined with seal groove, corresponding joint face, processes connecting hole, high temperature section cast iron plate, middle-temperature section cast iron plate and
Low-temperature zone cast iron plate is formed after being docked two-by-two by connecting hole to be formed on the rectangular configuration component of both ends open, rectangular configuration component
Load sealing strip in the seal groove of closing, seal groove to realize the sealing of air duct and exhaust gases passes；Two rectangular configuration groups
Part forms high temperature section cast iron plate row, middle-temperature section cast iron plate row and low-temperature zone cast iron respectively after being fixedly connected by the connecting hole at two ends
Plate is arranged.
5. a kind of combined air air preheater as claimed in claim 4, it is characterised in that the sealing strip uses ceramic fibre
Bar.
6. a kind of combined air air preheater as claimed in claim 5, it is characterised in that the glass tube preheater includes peace
Fill plate, sealing plate, sealing ring and glass tube；The installing plate and sealing plate are fixed together, and the glass tube passes through sealing ring
Realize that sealing is installed with the mounting hole on installing plate and sealing plate so that do not produced when the flue gas with pressure is by glass pipe outer wall
Raw gas leakage.
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| CN201710294539.6A CN106969374A (en) | 2017-04-28 | 2017-04-28 | A kind of combined air air preheater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710294539.6A CN106969374A (en) | 2017-04-28 | 2017-04-28 | A kind of combined air air preheater |
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| CN106969374A true CN106969374A (en) | 2017-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779359A (en) * | 2019-11-29 | 2020-02-11 | 天津健威泽节能环保科技股份有限公司 | High-temperature ultrahigh-dust carbon dioxide gas cooling and purifying device and implementation method |
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Application publication date: 20170721 |