CN208990563U - A kind of heat exchanger plates are coated with the denitration heat exchanger of catalyst layer - Google Patents
A kind of heat exchanger plates are coated with the denitration heat exchanger of catalyst layer Download PDFInfo
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- CN208990563U CN208990563U CN201821696575.1U CN201821696575U CN208990563U CN 208990563 U CN208990563 U CN 208990563U CN 201821696575 U CN201821696575 U CN 201821696575U CN 208990563 U CN208990563 U CN 208990563U
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Abstract
The utility model discloses the denitration heat exchanger that a kind of heat exchanger plates are coated with catalyst layer, including side frame and heat exchange core body, the side frame is located at the heat exchange core body two opposite sides, the quadrangle of the heat exchange core body is fixed by the corresponding positioning of corner post, the heat exchange core body includes several heat exchanger plates, spoiler between adjacent heat exchanger plates, side coupling bar connected components, angle coupling bar connected components and side sealing strip, the arbitrary neighborhood heat exchanger plates of several heat exchanger plates form the exhaust gases passes and cold fluid pass of right-angled intersection, and exhaust gases passes and cold fluid pass are not connected, the exhaust gases passes include gas inlet and exhanst gas outlet setting up and down, the cold fluid pass includes the cold fluid inlet and cold fluid outlet that front and back is arranged, the heat exchange plate surface is additionally provided with catalyst coat.The utility model is structurally reasonable, it is easily manufactured, while Mist heat recovering have the function of denitration, it is heat-exchange integrated to realize denitration, has saved space occupied.
Description
Technical field
The utility model relates to the denitration heat exchangers that a kind of heat exchanger plates are coated with catalyst layer.
Background technique
Industrial furnace belongs to energy consumption and disposal of pollutants rich and influential family in all trades and professions, typically constitutes from full factory's energy consumption
50% ~ 70%, the source that almost all atmosphere pollutions generate.
The energy-saving and emission-reduction of industrial furnace are extremely important.
In common denitration technology, according to the formation mechenism of nitrogen oxides, the technical measures for dropping nitrogen emission reduction can be divided into two
Major class:
One kind is administered from source.NOx is generated in control combustion process.Its technical measures: 1. low NO；2. firing
Burner ladder arrangement, layer and section burning, controls ignition temperature；3. flue gas recirculation etc..
Another kind of is from end treatment.The NOx discharged in control flue gas, technical measures: 1. " fractional combustion+SNCR "；
2. selective non-catalytic reduction method (SNCR)；3. selective catalytic reduction (SCR)；3. SNCR/SCR combined denitration technology；④
Oxidant (e.g., ozone, hydrogen peroxide or other oxidants) oxidation and denitration technology；5. biological denitrification technology.
Using low nitrogen and (or) super low NO, NOx concentration in the industrial kiln gas of fuel fuel gas can be made to reduce
To 50 ~ 100mg/Nm3。
But low nitrogen or super low NO are higher to the stability requirement of fuel component, once component occurs big
Fluctuation, denitrification effect decline therewith, it is easy to so that NOx emission is exceeded.And some industries, e.g., petrochemical industry industry
The fuel used generally self-produced fuel of furnace, with the variation of its raw material sources and component, the component variation of byproduct fuel gas is very
Greatly, calorific value variation range is 30% or so.
With the increase of environmentally friendly dynamics, be used alone low NO come denitration measure be not able to satisfy it is more and more harsh
Environment protection emission index requirement.
This just needs to carry out denitration using the mode of end treatment, that is, meets emission request using the method for denitrating flue gas.
SCR technology (SCR) is most mature gas denitrifying technology at present, it is denitration side after a kind of furnace
Method.Comercial operation is completed in the later period 60 ~ seventies 20th century by Japan earliest, is to be urged using reducing agent (NH3, urea) in metal
Under agent effect, is selectively reacted with NOx and generate N2And H2O, rather than by O2Oxidation, therefore it is known as " selectivity ".The world at present
The SCR technique of upper prevalence is broadly divided into ammonia process SCR and urea method SCR2 kind.This 2 kinds of methods are all the reduction function using ammonia to NOx
Can, NOx (mainly NO) is reduced to be not much atmosphere the N of influence under the effect of the catalyst2And water, reducing agent are
NH3。
SCR method denitration technology is the method for the removal NOx of mainstream in the world, and this method can be in existing industrial furnace system
Denitrification apparatus is added in system, under an oxygen-containing atmosphere, the limited catalytic process reacted with NO in exhaust gas of reducing agent is known as selectivity and urges
Change reduction.
SCR method denitrating system application temperature is generally at 200 ~ 450 DEG C.
SCR catalyst is the core of SCR denitration system, is generally divided into flat, cellular and three kinds of corrugated plate dst.
In order to meet discharge standard requirement, industrial furnace carry out increase denitrating system transformation or newly-built industrial furnace system
Denitrating system is set in system.Installation denitrating system must be separately provided in the suitable temperature range section of industrial furnace system.It occupies
Industrial furnace system limited space.
Present industrial furnace system is provided with flue gas waste heat recovery system, is used for recovered flue gas waste heat, improves industrial furnace heat
Efficiency reduces fuel consumption.
Main exhaust heat recovering method is to improve combustion air come preheated burning air using fume afterheat and enter furnace temperature
Degree reduces exhaust gas temperature, reaches energy-efficient purpose.
Denitrating catalyst reactor and air preheater belong to two sets of equipment, respectively occupy the space and position respectively needed
It sets.
General industry furnace enters the flue-gas temperature range before air preheater between 250 ~ 450 DEG C.In most of cigarettes
In qi exhaustion denox catalyst reaction temperature section.
For the occupancy for reducing space, the especially limitation of existing equipment transformation space, denitration catalyst reactor and air are solved
Preheater respectively independently occupies the confined space and has become urgent problem to be solved instantly.
Utility model content
The purpose of this utility model is to provide it is a kind of it is structurally reasonable, easily manufactured, have while Mist heat recovering
There is denitration function, realize that denitration is heat-exchange integrated, the heat exchanger plates for having saved space occupied are coated with the denitration heat exchange of catalyst layer
Device.
The technical solution of the utility model is that a kind of heat exchanger plates are coated with the denitration heat exchanger of catalyst layer, including side frame
And heat exchange core body, the side frame are located at the heat exchange core body two opposite sides, the quadrangle of the heat exchange core body is corresponding by corner post
Positioning is fixed, and the heat exchange core body includes that spoiler between several heat exchanger plates, adjacent heat exchanger plates, side coupling bar connected components, angle connect
Bolt component and side sealing strip are connect, the arbitrary neighborhood heat exchanger plates of several heat exchanger plates form the exhaust gases passes and cold fluid of right-angled intersection
Channel, and exhaust gases passes and cold fluid pass are not connected, the exhaust gases passes include gas inlet and flue gas setting up and down
Outlet, the cold fluid pass include that the cold fluid inlet that front and back is arranged and cold fluid outlet, the heat exchange plate surface are also set up
There is catalyst coat.
In one preferred embodiment of the utility model, it is provided on the contact surface of heat exchanger plates where the exhaust gases passes
Catalyst coat.
In one preferred embodiment of the utility model, the spoiler between the adjacent heat exchanger plates is in a strip shape or column or item
Column combination.
In one preferred embodiment of the utility model, between adjacent heat exchanger plates using riveting or be bolted or
Bolt riveting combination connection, and be coated with heat-proof corrosion resistant in heat exchanger plates contact surface and lose inorganic or organic sealant sealing.
In one preferred embodiment of the utility model, using welded connecting between adjacent heat exchanger plates.
In one preferred embodiment of the utility model, adjacent heat exchanger plates are welded by the sealing strip between heat exchanger plates to be connected
It connects.
In one preferred embodiment of the utility model, the heat exchanger plates are bolted with corner post or riveting, and
It is coated with heat-proof corrosion resistant in the two contact surface and loses inorganic or organic sealant sealing.
In one preferred embodiment of the utility model, the heat exchanger plates and corner post are using welded connecting.
The denitration heat exchanger described in the utility model that catalyst layer is coated with for a kind of heat exchanger plates, the utility model structure are closed
Reason, it is easily manufactured, while Mist heat recovering have the function of denitration, it is heat-exchange integrated to realize denitration, has saved land occupation
Space.
Detailed description of the invention
Fig. 1 is that a kind of heat exchanger plates of the utility model are coated with the explosion in one preferred embodiment of denitration heat exchanger of catalyst layer
Figure；
Fig. 2 is that a kind of heat exchanger plates of the utility model are coated with the solid in one preferred embodiment of denitration heat exchanger of catalyst layer
Figure.
Specific embodiment
The preferred embodiment of the utility model is described in detail below, so that the advantages of the utility model and feature energy
It is easier to be readily appreciated by one skilled in the art, to be more clearly defined the protection scope of the utility model.
The denitration heat exchanger described in the utility model that catalyst layer is coated with for a kind of heat exchanger plates, as shown in Figure 1 with Figure 2,
Including side frame 1 and heat exchange core body, the side frame 1 is located at the heat exchange core body two opposite sides, the quadrangle of the heat exchange core body
It is fixed by the corresponding positioning of corner post 2, the heat exchange core body includes spoiler 4 between several heat exchanger plates 3, adjacent heat exchanger plates 3, Bian Lian
Connecing bolt component, angle coupling bar connected components and side sealing strip, side sealing strip includes flue gas side sealing strip 8 and air side seals
Item 9, the arbitrary neighborhood heat exchanger plates 3 of several heat exchanger plates 3 form the exhaust gases passes 5 and cold fluid pass 6 of right-angled intersection, and flue gas is logical
Road 5 and cold fluid pass 6 are not connected, and the exhaust gases passes 5 include gas inlet and exhanst gas outlet setting up and down, described cold
Fluid channel 6 includes the cold fluid inlet and cold fluid outlet of front and back setting, and 3 surface of heat exchanger plates is additionally provided with catalyst painting
Layer 7.
Catalyst coat 7 is provided on the contact surface of the 5 place heat exchanger plates 3 of exhaust gases passes.
Spoiler 4 between the adjacent heat exchanger plates 3 is in a strip shape or column or column combination.
Between adjacent heat exchanger plates 3 using riveting or be bolted or bolt riveting combination connection, and heat exchanger plates 3 connect
Contact surface is coated with heat-proof corrosion resistant and loses inorganic or organic sealant sealing.
Using welded connecting between adjacent heat exchanger plates 3.
Adjacent heat exchanger plates 3 are welded to connect by the sealing strip between heat exchanger plates 3.
The heat exchanger plates 3 are bolted with corner post 2 or riveting, and are coated with heat-proof corrosion resistant in the two contact surface
Lose inorganic or organic sealant sealing.
The heat exchanger plates 3 are with corner post 2 using welded connecting.
The cold fluid includes air or liquid and/or gas cold medium.
The smoke inlet side assembling of denitration heat exchanger is provided with denitration air preheater, in denitration air preheater entrance cigarette
Denitrfying agent distribution nozzle system is suitably provided on road, the denitrfying agent outside system enters through piping and metering device is
System is reacted with the NOx in flue gas under the action of catalyst by nozzle ejection, achievees the purpose that remove NOx.Denitrfying agent point
Cloth nozzle system also can be set between the emptying of industrial furnace convection provided pipe；Also the cigarette at the top of convection current and convection current can be set
At transition flue duct between road.
Denitrfying agent can be ammonia, ammonium hydroxide, chemical fertilizer hydrolysis or pyrolysis ammonia or other kinds of denitrfying agent.
All types of industries furnace, boiler denitrating flue gas and residual neat recovering system in, assembled with the heat-exchange integrated core of denitration
Integral denitration air preheater can be used for high temperature, in mild low temperature denitrating flue gas and waste heat exhausting section.
Its denitration efficiency is related with coated catalyst performance, general up to 90% or more.It is fired equipped with low nitrogen or ultralow nitrogen
It is applied on the industrial furnace of burner, NOx emission concentration can be made steadily to drop to 20mg/Nm3Below.
The catalyst of heat exchanging plate of heat exchanger fireside surface coating is according to flue-gas temperature gradient in heat exchanger and heat exchanger plates table
Face temperature gradient fills high temperature, medium temperature, low temperature and/or ultralow temperature catalyst respectively, so that catalyst is constantly in it in heat exchanger
In temperature window.Guarantee denitration efficiency.
Because the catalyst layer thickness of heat exchanger plates coating is smaller, and catalyst Main Components are metal oxide, to heat transfer
Influence very little.Its heat exchange efficiency is suitable compared with the heat exchanger of no catalyst coat.
It is reserved with space in the smoke inlet upstream of integrated denitration preheater, for by calculating or equipment operation end
Phase is not able to satisfy denitration requirement using denitration air preheat one denitration preheater or denitration effect declines, in this preheater
Have on smoke inlet and simple denitrating catalyst bed is set, to reach denitration effect.
Heat exchanger plates material can be carbon steel, ND steel, stainless steel or non-according to use occasion temperature range and particular/special requirement
The combination of metal material or various material.
Heat exchanger plates can be plate, and various shape turbulent is arranged between adjacent panels, on the one hand plays spacing and support is made
With one side plays augmentation of heat transfer.
Heat exchanger plates can be the flanging plate of surrounding flanging and the contrary quadrangle corner cut of adjacent both sides flanging, and in phase
Various shape turbulent is set between adjacent plate, on the one hand plays spacing and supporting role, on the one hand plays augmentation of heat transfer.
Heat exchanger plates can be surrounding flanging and the contrary quadrangle corner cut of adjacent both sides flanging, and has among plate and pass through
Shaping jig equipment (punching press, molding etc.) molding corrugated plating, ripple at staggeredly or linear arrangement.Corrugated shape can be bowl
Type, butterfly, dome-type, semiellipse ball-type, droplet-shaped, fairing, hyperbolic-type, diamond shape, waveform, S type.
Heat exchanger plates are also possible to through shaping jig equipment (punching press, molding etc.) molding corrugated plating, ripple at staggeredly or
Linear arrangement.Corrugated shape can be bowl-type, butterfly, dome-type, semiellipse ball-type, droplet-shaped, fairing, hyperbolic-type, water chestnut
Shape, waveform, S type.
Heat exchanger plates can be surrounding flanging and the contrary plate quadrangle of adjacent both sides flanging has without corner cut, and among plate
By shaping jig equipment (punching press, molding etc.) molding corrugated plating, ripple is at staggeredly or linear arrangement.
Corrugated shape can be bowl-type, butterfly, dome-type, semiellipse ball-type, droplet-shaped, fairing, hyperbolic-type, water chestnut
Shape, waveform, S type.
Side sealing strip section is rectangular or rectangle.
Side sealing strip section is also possible to " u "-shaped, " oval " shape, shuttle shape, the U-typed with seal groove, the side with seal groove
Shape or rectangle.
The heat exchanger plates of surrounding flanging can not set side sealing strip.
Turbulent can be solid or hollow cylindricality (round, oval, oval, rectangle, polygon, diamond shape, hyperbolic-type, water
The various shapes such as drop type, streamlined), cylindricality can be straight, waveform, S type, Z-type, Π type, Σ type etc..
Turbulent can be solid or hollow bar shaped, and section can be round, ellipse, ellipsoid, rectangle, polygon
The various shapes such as shape, diamond shape, droplet-shaped, streamlined, waveform, H-type, drum, S type, Z-type, Π type, Σ type), bar shaped can be
Straight, waveform, c-type, S type etc..
According to locating temperature range and corrosive environment, material can be metal or nonmetallic or surface to be had again turbulent
Close the metal or nonmetallic of layer.
The denitration heat exchanger described in the utility model that catalyst layer is coated with for a kind of heat exchanger plates, the utility model structure are closed
Reason, it is easily manufactured, while Mist heat recovering have the function of denitration, it is heat-exchange integrated to realize denitration, has saved land occupation
Space.
The foregoing is merely specific embodiment of the present utility model, but the protection scope of the utility model is not limited to
This, anyone skilled in the art, can be without creative work in the technical scope disclosed by the utility model
The change or replacement expected, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model
It should be determined by the scope of protection defined in the claims.
Claims (8)
1. a kind of heat exchanger plates are coated with the denitration heat exchanger of catalyst layer, including side frame and heat exchange core body, the side frame is located at
The quadrangle of the heat exchange core body two opposite sides, the heat exchange core body is fixed by the corresponding positioning of corner post, and the heat exchange core body includes
Spoiler between several heat exchanger plates, adjacent heat exchanger plates, while coupling bar connected components, angle coupling bar connected components and while sealing strip, it is special
Sign is: the arbitrary neighborhood heat exchanger plates of several heat exchanger plates form the exhaust gases passes and cold fluid pass of right-angled intersection, and flue gas is logical
Road and cold fluid pass are not connected, and the exhaust gases passes include gas inlet and exhanst gas outlet setting up and down, the cold flow
Body channel includes that the cold fluid inlet that front and back is arranged and cold fluid outlet, the heat exchange plate surface are additionally provided with catalyst coat.
2. the denitration heat exchanger that heat exchanger plates according to claim 1 are coated with catalyst layer, it is characterised in that: the flue gas is logical
Catalyst coat is provided on the contact surface of heat exchanger plates where road.
3. the denitration heat exchanger that heat exchanger plates according to claim 1 are coated with catalyst layer, it is characterised in that: changed described in adjacent
Spoiler between hot plate is in a strip shape or column or column combination.
4. the denitration heat exchanger that heat exchanger plates according to claim 1 are coated with catalyst layer, it is characterised in that: adjacent heat exchanger plates
Between using riveting or be bolted or bolt riveting combination connection, and heat exchanger plates contact surface be coated with heat-proof corrosion resistant erosion
Inorganic or organic sealant sealing.
5. the denitration heat exchanger that heat exchanger plates according to claim 1 are coated with catalyst layer, it is characterised in that: adjacent heat exchanger plates
Between using be welded to connect.
6. the denitration heat exchanger that heat exchanger plates according to claim 1 are coated with catalyst layer, it is characterised in that: adjacent heat exchanger plates
It is welded to connect by the sealing strip between heat exchanger plates.
7. the denitration heat exchanger that heat exchanger plates according to claim 1 are coated with catalyst layer, it is characterised in that: the heat exchanger plates
It is bolted with corner post or riveting, and is coated in the two contact surface that heat-proof corrosion resistant erosion is inorganic or organic sealant is close
Envelope.
8. the denitration heat exchanger that heat exchanger plates according to claim 1 are coated with catalyst layer, it is characterised in that: the heat exchanger plates
With corner post using welded connecting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821696575.1U CN208990563U (en) | 2018-10-19 | 2018-10-19 | A kind of heat exchanger plates are coated with the denitration heat exchanger of catalyst layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821696575.1U CN208990563U (en) | 2018-10-19 | 2018-10-19 | A kind of heat exchanger plates are coated with the denitration heat exchanger of catalyst layer |
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| CN208990563U true CN208990563U (en) | 2019-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115790217A (en) * | 2022-12-23 | 2023-03-14 | 宁波连通设备集团有限公司 | Plastic plate modularized series-parallel combined heat exchanger |
-
2018
- 2018-10-19 CN CN201821696575.1U patent/CN208990563U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115790217A (en) * | 2022-12-23 | 2023-03-14 | 宁波连通设备集团有限公司 | Plastic plate modularized series-parallel combined heat exchanger |
| CN115790217B (en) * | 2022-12-23 | 2023-09-12 | 宁波连通设备集团有限公司 | Plastic plate modularized serial-parallel combined heat exchanger |
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