CN206919058U - A kind of combined air air preheater with denitration function - Google Patents
A kind of combined air air preheater with denitration function Download PDFInfo
- Publication number
- CN206919058U CN206919058U CN201720464785.7U CN201720464785U CN206919058U CN 206919058 U CN206919058 U CN 206919058U CN 201720464785 U CN201720464785 U CN 201720464785U CN 206919058 U CN206919058 U CN 206919058U
- Authority
- CN
- China
- Prior art keywords
- iron plate
- cast iron
- temperature section
- air
- row
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 229
- 239000011521 glass Substances 0.000 claims abstract description 66
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000003546 flue gas Substances 0.000 claims abstract description 42
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 20
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 7
- 239000003517 fume Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000012546 transfer Methods 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000011109 contamination Methods 0.000 claims abstract description 3
- 230000000149 penetrating effect Effects 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 16
- 239000000779 smoke Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 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
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000007767 bonding agent Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 235000000396 iron Nutrition 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000008859 change Effects 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 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
- 238000005530 etching Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007769 metal material Substances 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
- 210000003205 muscle Anatomy 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses a kind of combined air air preheater with denitration function, belong to technical field of petrochemical industry.The preheater controls wall temperature to realize the heat exchange purpose between air and flue gas using the coefficient of heat transfer of cast iron plate row's control hot and cold gas both sides of three kinds of different air side fins closenesses to reach；Exchanged heat in the low-temperature zone that the uncontrollable acid dew of cast iron plate fin is formed using glass tube preheater；The surface of the fume side of cast iron plate row is provided with denitrating catalyst, is mixed in flue by spraying ammonia pipeline penetrating ammonia with flue gas, the oxynitrides and ammonia in mixed flue gas produce reaction in the presence of catalyst, generate to the free of contamination nitrogen of air and water.The preheater can remove the oxynitrides in flue gas, and arrange to form the combinations of multiple temperature sections using the cast iron plate of different temperatures section, realize the heat exchange of full temperature section.
Description
Technical field
The recovery of petrochemical industry waste heat of flue gas of heating furnace and oxynitrides removing sulfuldioxide field are the utility model is related to, especially
It is related to a kind of collection heat exchange, the combined air air preheater of denitration multifunctional all.
Background technology
With the continuous attention that Petrochemical Enterprises work energy-saving and emission-reduction, the waste heat recovery of high-temperature flue gas turns into the important of energy-conservation
Measure, and it is also more and more lower to reclaim the smog discharge temperature after heat energy, flue gas low-temperature acid dew etching problem also increasingly highlights.It is conventional
Board-like, tubular preheater often restricted in the low-temperature heat exchange section of flue gas by its acid dew point, when heat exchange wall temperature be less than cigarette
Generation acid solution can be condensed during gas acid dew-point temperature on wall, preheater metal parts can be corroded, substantially reduces the longevity of preheater
Life, and improve industrial production cost；The oxynitrides being discharged into air is the primary pollution source for causing haze and acid rain
One of, it is more and more stricter to the discharge index of oxynitrides with continuous reinforcement of the country to air contaminant treatment dynamics, because
This reduces the correlative study of oxynitride concentration in discharge flue gas and measure has obtained increasing concern.
Utility model content
In view of this, the utility model provides a kind of combined air air preheater with denitration function, the preheater
It can remove the oxynitrides in flue gas, and arrange to form the combinations of multiple temperature sections using the cast iron plate of different temperatures section, it is real
The now heat exchange of full temperature section.
One kind has denitration function and service regenerative air heater, and the preheater uses three kinds of different air side fins closenesses
Cast iron plate row's control hot and cold gas both sides the coefficient of heat transfer, realize heat exchange mesh between air and flue gas to reach control wall temperature
's；Exchanged heat in the low-temperature zone that the uncontrollable acid dew of cast iron plate fin is formed using glass tube preheater；The cigarette of cast iron plate row
The surface of gas side is provided with denitrating catalyst, is mixed in flue by spraying ammonia pipeline penetrating ammonia with flue gas, in mixed flue gas
Oxynitrides and ammonia reaction is produced in the presence of catalyst, generate to the free of contamination nitrogen of air and water.
Further, the cast iron plate row of described three kinds different air side fins closenesses be respectively high temperature section cast iron plate row,
Middle-temperature section cast iron plate is arranged and low-temperature zone cast iron plate row, preheater also include main body frame, 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 have 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 of the horizontal fin piece of high temperature section cast iron plate row 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, medium 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, and the other end corresponds to deflection plate, glass tube preheating
The lower section of device is exhanst gas outlet, and one end of high temperature section cast iron plate row corresponds to deflection plate, 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, the quantity of high temperature section cast iron plate row, middle-temperature section cast iron plate row and low-temperature zone cast iron plate row according to
Heat exchange needs to select the denitrating catalyst of the fireside surface a group or more of, cast iron plate is arranged from top to bottom continuously to set.
Further, different temperature section cast iron plate rows combine according to the needs of control metal wall surface temperature realizes controllable temperature rise
Change.
Further, the denitrating catalyst is bonded in the surface of cast iron plate smoke discharging side by bonding agent, uses bonding
Denitrating catalyst efficiently can be bonded on heat exchanger plates by agent.
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
Formed 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, medium 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 inner surface processing horizontal fin piece in the horizontal direction of cast iron plate, the density of horizontal fin piece is more than middle-temperature section cast iron on high temperature section cast iron plate
Plate；The both 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, on 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
Open rectangular configuration component is held, the seal groove of closing is formed on rectangular configuration component, loads sealing strip in seal groove 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 both 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 the flue gas with pressure during glass pipe outer wall by not producing gas leakage.
Beneficial effect：
1st, the utility model is changed using the combining form of cast iron plate and glass tube preheater by three kinds of dissimilar tooth forms
Plate row and the combination of glass pipeline section preheater of cast iron plate, it can effectively control each rank temperature section temperature change that air flows through
Wall temperature, realize the metal wall temperature-controllable heat exchange of the full temperature section of heat exchanger；It is provided with the surface of the fume side of cast iron plate row
Denitrating catalyst, by spraying into ammonia into smoke-intake pipe road, the denitration process to flue gas is realized, significantly reduces flue gas to big
The pollution of gas.
2nd, the application heat exchanger heat exchange efficiency that the utility model is combined by cast iron plate with glass tube greatly improves, cigarette
Temperature degree is controllable lower, reduces temperature loss, improves energy conversion effect, reduces energy waste.
3rd, the utility model employs glass tube in the low-temperature zone that flue gas flows through and instead of traditional metal materials, leads in flue gas
During stream, can effectively it avoid inside preheater because the low temperature condensation that temperature change is big and occurs causes asking for material corrosion
Topic.
4th, the utility model inner side fin and glass tube table that to make use of cast iron plate smooth consistent with flow of flue gas direction
The smooth characteristic for being not easy adhesive dust in face, when realizing inside smoke and flowing through each temperature section, cast iron plate smooth inner side fin and glass
Glass tube outer surface can be removed effectively to dust fouling.
5th, the application that the utility model is combined by cast iron plate with glass tube, service life are bigger than other traditional heat exchangers
Width extends, and significantly alleviates the gross weight of heat exchanger.
6th, the application that the utility model is combined by cast iron plate with glass tube, cast iron plate high temperature section, cast iron plate medium temperature are passed through
The different installation combinations of section, cast iron plate low-temperature zone, the multiple temperature sections of glass tube low temp section, structure type installation is simple, preheater
It is not easy to fail, easily realizes local repair and the system overhaul in later stage；Product repairing and local repair is set easily to realize.
7th, the utility model is effectively filled by the use of ceramic fibre bar as sealing strip to cast iron plate joint gap, ensures casting
The gap connected between iron plate is sufficiently sealed, in the case where ensureing that flue gas and air loop are completely airtight, can absorb because of temperature
Any small expansion and contraction between continuous cast iron plate row caused by change, absorb the thermal expansion between metallic plate, avoid pre-
Be difficult to stress and the gap of adjustment control caused by inside hot device, ensure heat exchanger can reliably working and reaching efficiently change
Heat.
Brief description of the drawings
Fig. 1,2 are overall structure diagram of the present utility model (front view+left view)；
Fig. 3 is that high temperature section cast iron plate of the present utility model arranges scheme of installation；
Fig. 4 is that middle-temperature section cast iron plate of the present utility model arranges scheme of installation；
Fig. 5 is that low-temperature zone cast iron plate of the present utility model arranges scheme of installation；
Fig. 6 is glass pipeline section scheme of installation of the present utility model；
Fig. 7,8 are high temperature section cast iron plate part drawing of the present utility model；
Fig. 9,10 are middle-temperature section cast iron plate part drawing of the present utility model；
Figure 11,12 are low-temperature zone cast iron plate part drawing of the present utility model；
Wherein, 1- smoke-intake pipes road, 2- smoke pipelines；5- wash tub pipes；6- glass tube preheaters；7- main body frames；8- is protected
Warm layer；9- high temperature sections cast iron plate is arranged；10- middle-temperature sections cast iron plate is arranged；11- low-temperature zones cast iron plate is arranged；13- high temperature section cast iron plates；14-
Connecting bolt；15- nuts；16- packing rings；17- sealing strips；18- middle-temperature section cast iron plates；19- low-temperature zone cast iron plates；20- glass tubes
Installing plate；21- glass tubes；22- sealing rings；23- sealing plates；24- horizontal fin pieces；25- erects fin；26- seal grooves；27- strengthens
Muscle, 28- connecting holes；31- air inlet lines, 32- air outlet manifolds；35- deflection plates；41- sprays ammonia pipeline；42- sprays ammonia lattice
Grid.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
As shown in figure 1 and 2, the utility model provides a kind of combined air air preheater, and the preheater is included into cigarette
Pipeline 1, smoke pipeline 2, main body frame 5, high temperature section cast iron plate row 9, middle-temperature section cast iron plate row 10, low-temperature zone cast iron plate row 11,
Glass tube preheater 6, heat-insulation layer 8, deflection plate 35 and wash tub pipe 5；
Two groups of high temperature section cast iron plates arrange 9, two groups of middle-temperature section cast iron plates and arrange 10, one groups of low-temperature zone cast iron plate rows 11 and glass
Pipe preheater 4 is vertically installed on main body frame 5 from high to low, and wash tub pipe 5 is arranged on glass tube preheater 6 and low-temperature zone is cast
Between iron plate row 11, in two groups of high temperature section cast iron plate rows 9 and middle-temperature section cast iron plate row 10, above one group is arranged in cast iron plate
The surface of fume side be provided with denitrating catalyst；
High temperature section cast iron plate row 9, middle-temperature section cast iron plate arrange the side of 10, low-temperature zone cast iron plate row 11 and glass tube preheater 6
Face filling heat insulating wall 8, deflection plate 35 are arranged on two-by-two at the air duct of adjacent component, and one end of glass tube preheater 6 is sky
Gas entrance, air inlet line 31 being connected with, the other end corresponds to deflection plate 35, and the lower section of glass tube preheater 6 is exhanst gas outlet,
Smoke pipeline 2 is connected with, one end of high temperature section cast iron plate row 9 corresponds to another piece of deflection plate 7, and the other end is air outlet slit, connection
There is air scoop pipeline 32, the top of high temperature section cast iron plate row 9 is smoke inlet, is connected with smoke-intake pipe road 1, smoke-intake pipe road 1 enters
Mouth end installation spray ammonia pipeline 41 and ammonia-spraying grid 42, flue gas pass through high temperature section cast iron plate row 9, middle-temperature section cast iron plate row 10 and low temperature
Gap in gap and glass tube preheater 6 between the perpendicular fin of section cast iron plate row 11 between glass tube is vertically from smoke
Pipeline 2 is discharged；Air intake of the air through glass tube preheater 6 enters, and reaches the deflection plate 35 of the other end, enters after baffling
One end of low-temperature zone cast iron plate row 11, middle-temperature section cast iron plate row 2 is folded into after other end outflow, is most arranged afterwards through high temperature section cast iron plate
9 flow out from air scoop pipeline 32.
As shown in accompanying drawing 2,3 and 4, high temperature section cast iron plate row 9, middle-temperature section cast iron plate row 10 and low-temperature zone cast iron plate row 11 are
The rectangular case structure of front and rear insertion, its outer surface have perpendicular fin 25 vertically, and shell structure is internally formed air
Passage；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
The density of the horizontal fin piece 24 of plate row 9 is more than middle-temperature section cast iron plate row 10, the inner surface non-finned of low-temperature zone cast iron plate row 11.
As shown in accompanying drawing 7,8,9,10,11 and 12, high temperature section cast iron plate row 9, middle-temperature section cast iron plate row 10 and low-temperature zone casting
Iron plate row 11 is respectively by two groups of 19 groups of high temperature section cast iron plate 13, middle-temperature section cast iron plate 18 and low-temperature zone cast iron plates in specular
Into the lateral surface of 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
25；The inner surface processing horizontal fin piece 24 in the horizontal direction of high temperature section cast iron plate, middle-temperature section cast iron plate, it is horizontal on high temperature section cast iron plate
The density of fin is more than middle-temperature section cast iron plate；The both ends of high temperature section cast iron plate, middle-temperature section cast iron plate and low-temperature zone cast iron plate add
Work has seal groove 26, and connecting hole 28, high temperature section cast iron plate 13, middle-temperature section cast iron plate 18 and low temperature are processed on corresponding joint face
Section cast iron plate 19 forms the rectangular configuration component of both ends open after docking two-by-two, pass through connecting hole 28 and connecting bolt 14, spiral shell
Mother 15 and packing ring 16 are fixed together, and the seal groove 26 of closing is formed on rectangular configuration component, loads sealing in seal groove
Bar realizes the sealing of air duct and exhaust gases passes；The connecting hole 28 and connection spiral shell that two rectangular configuration components pass through both ends
Bolt 14, nut 15 form high temperature section cast iron plate row 1, middle-temperature section cast iron plate row 2 and low-temperature zone respectively after being fixedly connected with packing ring 16
Cast iron plate row 3.
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 6, glass tube preheater 6 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, reaches the sealing ring 22, sealing ring 22 and sealing plate of glass tube 21 and both sides
23rd, the close contact between sealing plate 23 and installing plate 21 reaches integral sealing；So that the flue gas with certain pressure passes through glass
Gas leakage is not produced during glass 21 outer wall of pipe；The both ends of glass tube 21 are connected with air duct.
Exchange heat operation principle：High-temperature flue gas by smoke-intake pipe road 1 enter this combined type preheater, high-temperature flue gas vertically downward,
Wing wall in the perpendicular fin 25 of each cast iron plate of high temperature section cast iron plate row 9, each cast iron plate of middle-temperature section cast iron plate row 10 are flowed through successively
Fume side erect fin 25 in wing wall, low-temperature zone cast iron plate row 11 each cast iron plate fume side erect fin in wing wall, glass tube
Section preheater 6 each glass tube 21 pipe outer wall after, flowed out by smoke pipeline 2, into low-temperature flue gas pipeline after treat further to locate
Reason.The heat for absorbing high-temperature flue gas is transmitted to the horizontal fin piece 24 in outside by the perpendicular fin 25 of the cast iron plate of high temperature section cast iron plate row 9,
Realize in the air that outside is conducted heat under the heat transfer area of maximum and heat the air for flowing through horizontal fin piece 24；Medium temperature
The perpendicular fin 25 of the cast iron plate of section cast iron plate row 10 conducts the heat for absorbing the flue gas after the cooling of high temperature section cast iron plate row 1
To the horizontal fin piece 24 of air side, realize in the air that outside is conducted heat under the heat transfer area of maximum and horizontal fin will be flowed through
The air heating of piece 24；The perpendicular fin 25 of the cast iron plate of low-temperature zone cast iron plate row 11 will be absorbed by middle-temperature section cast iron plate row 10
Flue gas heat after cooling is transmitted to horizontal fin piece 24, realizes and is conducted heat under the heat transfer area of maximum in the air in outside
And the air for flowing through horizontal fin piece 24 is heated；Flue-gas temperature after the cooling of low-temperature zone cast iron plate row 11 close to dew-point temperature,
Waste heat is transmitted in the air surveyed in glass tube 21 by low-temperature flue gas after flowing through glass pipeline section preheater 6, to flowing through glass tube 21
Air continue to heat, complete the temperature-fall period of high-temperature flue gas.Controlled by the flue-gas temperature to cool three times in claimed range
It is interior, to greatest extent by waste heat recovery, reduce the loss of energy.
Cryogenic air flows out after flowing through the inwall of each glass tube 21 of glass tube preheater 6 successively by air inlet line 31,
Into the air inlet side of low-temperature zone cast iron plate row 11, the air flow channel that low-temperature zone cast iron plate arranges 11 non-finned is flowed through, by low
The outlet side outflow of temperature section cast iron plate row 11, by the air intake for entering middle-temperature section cast iron plate row 10 after the baffling of deflection plate 35
Side, flow through middle-temperature section cast iron plate plate row 10 each cast iron plate horizontal fin piece 24 after, by middle-temperature section cast iron plate plate row 10 outlet side,
Enter the air inlet side of high temperature section cast iron plate row 9 by deflection plate 35, flow through each cast iron plate of high temperature section cast iron plate plate row 9
Air side horizontal fin piece 24, the high temperature air pipeline of outside is entered through air outlet manifold 32.
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 6
After entering low-temperature zone cast iron plate row 11 after being heated, the air side plate for being flowed through the cast iron plate after the flue gas of low-temperature zone adds
Heat；Air after being heated enters middle-temperature section cast iron plate row 10 along air duct；After the flue gas for being flowed through middle-temperature section
The horizontal fin piece 24 of cast iron plate continues to heat；Air after being heated continues into high temperature section cast iron plate row 9 along air duct, after
It is continuous to be heated by the horizontal fin piece 24 of high temperature section cast iron plate 13, high temperature is entered through air outlet manifold 32 by the high temperature air of heating for multiple times
Air duct, complete the heated process of Cryogenic air.By low to cast iron plate high temperature section, cast iron plate middle-temperature section, cast iron plate
Temperature section, the multiple temperature sections of glass tube low temp section various combination and cast iron plate on horizontal fin density size control, realized
Help the heat exchange of temperature section.
Denitration principle：Ammonia uniformly sprays into smoke-intake pipe road 1 by ammonia-spraying grid 42, the oxynitrides in mixed flue gas
Fully contacted with ammonia, by changing into nitrogen after high temperature section cast iron plate row 9 and middle-temperature section cast iron plate row 10 provided with denitrating catalyst
Gas and water.Wherein, the high activity of catalyst reaction temperature section coated on high temperature section denitration cast iron fin is 200-450 respectively
℃；The high activity of catalyst reaction temperature section coated on middle-temperature section denitration cast iron fin is 160-200 DEG C respectively.By denitration
And the flue gas after heat exchange is discharged by smoke pipeline 2, the air by heat exchange is discharged by air outlet manifold 32.
In summary, preferred embodiment of the present utility model is these are only, is not intended to limit of the present utility model
Protection domain.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc., all should be wrapped
It is contained within the scope of protection of the utility model.
Claims (8)
1. a kind of combined air air preheater with denitration function, it is characterised in that the preheater uses three kinds of different air
The coefficient of heat transfer of cast iron plate row's control hot and cold gas both sides of side fin closeness, air and flue gas are realized to reach control wall temperature
Between heat exchange purpose；Exchanged heat in the low-temperature zone that the uncontrollable acid dew of cast iron plate fin is formed using glass tube preheater；Casting
The surface of the fume side of iron plate row is provided with denitrating catalyst, is mixed in flue by spraying ammonia pipeline penetrating ammonia with flue gas,
Oxynitrides and ammonia in mixed flue gas produce reaction in the presence of catalyst, generate to the free of contamination nitrogen of air and
Water.
2. there is the combined air air preheater of denitration function as claimed in claim 1, it is characterised in that three kinds of differences
The cast iron plate row of air side fins closeness is respectively high temperature section cast iron plate row, middle-temperature section cast iron plate row and low-temperature zone cast iron plate
Row, preheater also include main body frame, 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 have 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 medium 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 row, middle-temperature section cast iron plate are arranged, are 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, and the other end corresponds to deflection plate, glass tube preheater
Lower section be exhanst gas outlet, one end of high temperature section cast iron plate row correspond to deflection plate, and the other end is air outlet slit, and high temperature section is cast
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 low-temperature zone cast iron plate row's 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.
3. there is the combined air air preheater of denitration function as claimed in claim 2, it is characterised in that the high temperature section casting
The quantity of iron plate row, middle-temperature section cast iron plate row and low-temperature zone cast iron plate row need to select a group or more of, casting according to heat exchange
The denitrating catalyst of the fireside surface of iron plate row is from top to bottom continuously set.
4. there is the combined air air preheater of denitration function as claimed in claim 1, it is characterised in that different temperature section cast irons
Plate row combines according to the needs of control metal wall surface temperature and realizes that controllable temperature rise changes.
5. there is the combined air air preheater of denitration function as claimed in claim 4, it is characterised in that the denitration catalyst
Agent is bonded in the surface of cast iron plate smoke discharging side by bonding agent, efficiently can be solidificated in denitrating catalyst using adhesive
On heat exchanger plates.
6. there is the combined air air preheater of denitration function as claimed in claim 2, it is characterised in that the high temperature section casting
Iron plate row, middle-temperature section cast iron plate row and low-temperature zone cast iron plate row are respectively by two groups in the high temperature section cast iron plate of specular, medium temperature
Section cast iron plate and low-temperature zone cast iron plate composition, the outside of the high temperature section cast iron plate, middle-temperature section cast iron plate and low-temperature zone cast iron plate
Face is machined with perpendicular fin vertically；High temperature section cast iron plate, the inner surface of middle-temperature section cast iron plate are processed in the horizontal direction
Horizontal fin piece, the density of horizontal fin piece is more than middle-temperature section cast iron plate on high temperature section cast iron plate；High temperature section cast iron plate, middle-temperature section cast iron plate
Seal groove is machined with the both ends of low-temperature zone cast iron plate, connecting hole, high temperature section cast iron plate, medium temperature are processed on corresponding joint face
Section cast iron plate and low-temperature zone cast iron plate form the rectangular configuration component of both ends open, rectangular configuration after being docked two-by-two by connecting hole
The seal groove of closing is formed on component, loads sealing strip in seal groove to realize the sealing of air duct and exhaust gases passes；Two
Rectangular configuration component formed respectively after being fixedly connected by the connecting hole at both ends high temperature section cast iron plate row, middle-temperature section cast iron plate row and
Low-temperature zone cast iron plate is arranged.
7. there is the combined air air preheater of denitration function as claimed in claim 6, it is characterised in that the sealing strip is adopted
With ceramic fibre bar.
8. there is the combined air air preheater of denitration function as claimed in claim 1, it is characterised in that the glass tube is pre-
Hot device includes installing plate, sealing plate, sealing ring and glass tube；The installing plate and sealing plate are fixed together, the glass tube
Sealing installation is realized by the mounting hole on sealing ring and installing plate and sealing plate so that the flue gas with pressure passes through glass tube
Gas leakage is not produced during outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720464785.7U CN206919058U (en) | 2017-04-28 | 2017-04-28 | A kind of combined air air preheater with denitration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720464785.7U CN206919058U (en) | 2017-04-28 | 2017-04-28 | A kind of combined air air preheater with denitration function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206919058U true CN206919058U (en) | 2018-01-23 |
Family
ID=61306432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720464785.7U Active CN206919058U (en) | 2017-04-28 | 2017-04-28 | A kind of combined air air preheater with denitration function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206919058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979535A (en) * | 2017-04-28 | 2017-07-25 | 北京拓首工业炉股份有限公司 | A kind of combined air air preheater with denitration function |
-
2017
- 2017-04-28 CN CN201720464785.7U patent/CN206919058U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979535A (en) * | 2017-04-28 | 2017-07-25 | 北京拓首工业炉股份有限公司 | A kind of combined air air preheater with denitration function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106979535A (en) | A kind of combined air air preheater with denitration function | |
| CN206739348U (en) | A kind of combined air air preheater | |
| CN201032440Y (en) | Snake structure separated heat pipe heat exchange system | |
| CN206919058U (en) | A kind of combined air air preheater with denitration function | |
| CN102297510A (en) | Indirect hot blast furnace | |
| CN203928789U (en) | A kind of boiler combined condenser | |
| CN104296383A (en) | A high-efficiency condensing heat exchanger | |
| CN201218681Y (en) | Fluctuation heat pipe module and thermal energy reclaiming equipment equipped with the same | |
| CN106090973B (en) | Smoke processing system and method | |
| CN208382948U (en) | A kind of novel plant waste heat recycling heating device | |
| CN105318750B (en) | Cellular heat transfer unit (HTU) and application thereof | |
| CN106969374A (en) | A kind of combined air air preheater | |
| CN206496367U (en) | Helical finned tube type steam air heater | |
| CN109269331A (en) | A kind of two-period form heat pipe rotational flow heat exchanger | |
| CN209326442U (en) | Heat exchange fin is used in a kind of recycling of boiler afterheat | |
| CN206474013U (en) | A kind of smoke processing system of energy-conservation | |
| CN201159600Y (en) | Roasting furnace waste heat recovery device | |
| CN201764862U (en) | High temperature heat exchanger | |
| CN206919710U (en) | Energy-saving heat exchanger | |
| CN206321090U (en) | A kind of wave-fin heat exchange of heat pipe | |
| CN206160783U (en) | Split type air heater | |
| CN205747490U (en) | Utilize the production technique for fertilizer warm-air supply system of fume afterheat | |
| CN211953743U (en) | A heating furnace flue gas waste heat recovery system | |
| CN201593801U (en) | Air preheater with horizontal flow of flue gas from high temperature to low temperature | |
| CN113654033B (en) | Low-pressure water-medium heat exchanger for recovering flue gas waste heat, anti-blocking and anti-corrosion method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 102299 C2327 2, 16 building, No. 37 Chao Yuan Road, Changping District science and Technology Park, Beijing. Patentee after: Beijing pioneer energy Polytron Technologies Inc Address before: 100107 11th floor, 7th floor, Tianjuyuan, Olympic Media Village, Chaoyang District, Beijing Patentee before: Beijing Pioneer Industrial Furnace Co., Ltd. |