CN208990569U - A kind of integrated fume denitrification apparatus loading denitrating catalyst and catalyst coat - Google Patents
A kind of integrated fume denitrification apparatus loading denitrating catalyst and catalyst coat Download PDFInfo
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- CN208990569U CN208990569U CN201821696587.4U CN201821696587U CN208990569U CN 208990569 U CN208990569 U CN 208990569U CN 201821696587 U CN201821696587 U CN 201821696587U CN 208990569 U CN208990569 U CN 208990569U
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Abstract
The utility model discloses a kind of integrated fume denitrification apparatus for loading denitrating catalyst and catalyst coat, 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, filling is provided with denitrating catalyst in the exhaust gases passes, the heat exchange plate surface coating is provided with catalyst coat.The utility model is structurally reasonable, easily manufactured, has the function of denitration while Mist heat recovering, and it is heat-exchange integrated to realize denitration, has saved space occupied, and the catalyst loading and unloading loaded in exhaust gases passes is convenient.
Description
Technical field
The utility model relates to a kind of integrated fume denitrification apparatus for loading denitrating catalyst and catalyst coat.
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；Oxidant 4. (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 30 ~ 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 existed using reducing agent (NH3, urea)
It under metallic catalyst effect, is selectively reacted with NOx and generates N2 and H2O, rather than aoxidized by O2, therefore be known as " selectivity ".
The SCR technique of prevalence is broadly divided into ammonia process SCR and two kinds of urea method SCR in the world at present.This both of which is to utilize ammonia pair
The restoring function of NOx, under the effect of the catalyst by NOx (mainly NO) be reduced on atmosphere be not much influence N2 and
Water, reducing agent 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.
The denitration of low-temperature flue gas can also apply ozone (O3) and/or 27% ~ 50% hydrogen peroxide (hydrogen peroxide H2O2) of concentration
Equal strong oxidizers are high-order nitrogen oxides the low order nitrogen oxides in flue gas, reuse alkali under the effect of the catalyst
Property solution and high-order nitrogen oxides occur neutralization reaction, generate NO3-N and NO2-N, reach denitration purpose.
Oxidizing process denitration application temperature window is generally at 90 DEG C ~ 200 DEG C.
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.
General industry furnace goes out the flue-gas temperature range of air preheater between 140 ~ 180 DEG C.The thermal efficiency 90% ~ 93%,
It is relatively low.To improve industrial furnace thermal efficiency, low-temperature air preheater or other heat exchangers are set in existing preheater downstream, make flue gas
Temperature be reduced to 90 DEG C hereinafter, the thermal efficiency is improved to 95% or more.
Oxidizing process denitrating catalyst is loaded in the exhaust gases passes of low-temperature pre-heater, and the mesh of denitration is reached while heat exchange
's.
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 a kind of structurally reasonable, easily manufactured, have while Mist heat recovering
There is denitration function, it is heat-exchange integrated to realize denitration, has saved space occupied, and the catalyst loading and unloading loaded in exhaust gases passes
It is convenient, after catalyst inactivation, decaying catalyst need to only be drawn off, recharge the catalyst of raw catelyst or regeneration activation
Filling denitrating catalyst and catalyst coat integrated fume denitrification apparatus.
The technical solution of the utility model is a kind of integrated fume denitration for loading denitrating catalyst and catalyst coat
Device, including side frame and heat exchange core body, the side frame are located at the heat exchange core body two opposite sides, and the four of the heat exchange core body
Angle 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, side connection
Component, angle coupling bar connected components and side sealing strip are bolted, the arbitrary neighborhood heat exchanger plates of several heat exchanger plates form the cigarette of right-angled intersection
Gas channel and cold fluid pass, and exhaust gases passes and cold fluid pass are not connected, the exhaust gases passes include setting up and down
Gas inlet and exhanst gas outlet, the cold fluid pass include the cold fluid inlet and cold fluid outlet that front and back is arranged, the cigarette
Filling is provided with denitrating catalyst in gas channel, and the heat exchange plate surface coating is provided with catalyst coat.
In one preferred embodiment of the utility model, the denitrating catalyst includes preformed catalyst and catalysis in bulk
Agent, the preformed catalyst are corrugated plate shape or S shape or polyline shaped or are formed with heat exchanger plates " herring-bone form " of flue gas circulation passage
Or the irregular shape catalyst of rectangular or square honeycomb or hexagonal honeycomb shape or other and heat exchanger plates formation flue gas circulation passage
Or the combination of above structure, the corrugated plate shape catalyst are to be packed among dual damascene plate or S shape to press from both sides plate catalyst knot
Structure is packed among dual damascene plate or S shape the structure for having the spacing of metal or non-metallic material to support；The catalysis in bulk
Agent is the combination that graininess or column of various shapes and/or sphere and/or various shape body are capable of forming gap and space
Structure.
In one preferred embodiment of the utility model, the various of several regular arrangements are provided on the preformed catalyst
Regular shape and/or irregular hole.
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.
In one preferred embodiment of the utility model, the denitrating catalyst passes through among exhaust gases passes and exit
Supports support setting.
In one preferred embodiment of the utility model, the heat exchange plate surface coating of the exhaust gases passes side, which is provided with, is urged
Agent coating.
Integrated fume denitrification apparatus described in the utility model for a kind of filling denitrating catalyst and catalyst coat, this
Utility model is structurally reasonable, easily manufactured, has the function of denitration while Mist heat recovering, realizes denitration heat exchange one
Change, saved space occupied, and the catalyst loading and unloading loaded in exhaust gases passes is convenient, it, only need to be inactivation after catalyst inactivation
Catalyst is drawn off, and recharges the catalyst of raw catelyst or regeneration activation.
Detailed description of the invention
Fig. 1 be the utility model it is a kind of filling denitrating catalyst and catalyst coat integrated fume denitrification apparatus one compared with
Explosive view in good embodiment；
Fig. 2 be the utility model it is a kind of filling denitrating catalyst and catalyst coat integrated fume denitrification apparatus one compared with
The perspective view for being filled with single layer corrugated plating catalyst in good embodiment；
Fig. 3 be the utility model it is a kind of filling denitrating catalyst and catalyst coat integrated fume denitrification apparatus one compared with
The perspective view for being filled with the intermediate double-deck corrugated plating catalyst for being plate catalyst in good embodiment；
Fig. 4 be the utility model it is a kind of filling denitrating catalyst and catalyst coat integrated fume denitrification apparatus one compared with
The perspective view for being filled with herring-bone form catalyst in good embodiment；
Fig. 5 be the utility model it is a kind of filling denitrating catalyst and catalyst coat integrated fume denitrification apparatus one compared with
The perspective view for being filled with rectangular or square honeycombed catalyst in good embodiment；
The structural schematic diagram of heat exchanger plates, catalyst coat and desulphurization catalyst that Fig. 6 is Fig. 5；
Fig. 7 be the utility model it is a kind of filling denitrating catalyst and catalyst coat integrated fume denitrification apparatus one compared with
The perspective view for being filled with hexagonal honeycomb shape catalyst in good embodiment.
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.
Integrated fume denitrification apparatus described in the utility model for a kind of filling denitrating catalyst and catalyst coat, such as
Shown in Fig. 1 combination Fig. 2-Fig. 7, including side frame 1 and heat exchange core body, the side frame 1 are 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 2, and the heat exchange core body includes several heat exchanger plates 3, adjacent heat exchange
Spoiler 4 between plate, while coupling bar connected components, angle coupling bar connected components and while sealing strip, the side sealing strip includes adjacent changes
The arbitrary neighborhood heat exchanger plates of flue gas side sealing strip 5 and air side sealing strip 6 between hot plate 3, several heat exchanger plates 3 form cross
The exhaust gases passes 7 and cold fluid pass 8 of intersection, and exhaust gases passes 7 and cold fluid pass 8 are not connected, the exhaust gases passes 7 wrap
Gas inlet and exhanst gas outlet setting up and down are included, the cold fluid pass 8 includes the cold fluid inlet and cold flow of front and back setting
Body outlet, filling is provided with denitrating catalyst 9 in the exhaust gases passes 7, the denitrating catalyst 9 by among exhaust gases passes with
The supports support in exit is arranged, and 3 surface of the heat exchanger plates coating of 7 side of exhaust gases passes is provided with catalyst and applies 10.
The denitrating catalyst 9 includes preformed catalyst and bulk catalyst, and the preformed catalyst is corrugated plate shape or S
Shape or polyline shaped or " herring-bone form " or rectangular or square honeycomb or the hexagon bee that flue gas circulation passage is formed with heat exchanger plates
The combination of nest shape or other and the irregular shape catalyst or above structure of heat exchanger plates formation flue gas circulation passage, the corrugated plate shape are urged
Agent is to be packed among dual damascene plate or S shape to press from both sides plate catalyst structure or be packed among dual damascene plate or S shape to have
The structure of the spacing of metal or non-metallic material support to guarantee that flue gas comes into full contact with catalyst, and enhances flue gas heat exchange effect
Rate, be provided on the preformed catalyst several regular arrangements various shape rule and/or irregular hole, because of flue gas
The catalyst loaded in channel can form flue gas circulation passage with heat exchanger plates, not influence the circulation of flue gas, and can increase cigarette
The disturbance degree of flow of air, it is advantageous to conducting heat, it is especially provided with the preformed catalyst of hole, it is more efficient.
The bulk catalyst is that graininess or column of various shapes and/or sphere and/or various shape body can
Form the composite structure in gap and space.
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, uses and is welded to connect between adjacent heat exchanger plates 3, adjacent heat exchange
Plate 3 is welded to connect by the side 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
Inorganic or organic sealant sealing is lost, the heat exchanger plates 3 are with corner post 2 using welded connecting.
Also corresponding assembling is provided with denitration air preheat at the gas inlet of the exhaust gases passes of integrated fume denitrification apparatus
Device is suitably provided with denitrfying agent distribution nozzle system on pre-heater inlet flue.Denitrfying agent outside system is by pipe
Road and metering device enter system, are ejected under the catalyst action in exhaust gases passes by nozzle and are carried out with the NOx in flue gas
Reaction achievees the purpose that remove NOx.
Denitrfying agent distribution nozzle system also can be set between the emptying of industrial furnace convection provided pipe；Also it can be set
At transition flue duct at the top of convection current and convection current between flue.
Denitrfying agent can be ammonia, ammonium hydroxide, chemical fertilizer hydrolysis or pyrolysis ammonia either ozone or hydrogen peroxide or ozone and dioxygen
The combination of the different proportion of water.
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 institute's loading 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 catalysis of the molding or bulk catalyst loaded in heat exchanger exhaust gases passes and the coating of heat exchanger plates fireside surface
Agent fills high temperature, medium temperature, low temperature and/or ultralow temperature catalyst according to flue-gas temperature gradient and heat exchange plate surface temperature gradient respectively, with
It is constantly in catalyst in heat exchanger in its temperature window, guarantees denitration efficiency.
Its heat exchange efficiency wants high compared with general heat exchanger.
When being filled with preformed catalyst, at smoke inlet end catalyst end be provided with guard catalyst from or reduce cigarette
The guard block or catch net that gas directly washes away.
Inlet and outlet on fume side and cold flow side are provided with diversion component, reduce fluid flow resistance.
Cold fluid can also be other liquid and/or gas cold medium other than being air.
It is reserved with space or additional preparing catalyst layer in the smoke inlet upstream of integrated denitration preheater, is used for
Within the device cycle of operation, denitration efficiency decline has on this preheater flue gas entrance and simple denitrating catalyst bed is arranged,
To reach denitration effect.
Heat exchanger plates material can be carbon steel, ND steel, stainless steel, compound according to use occasion temperature range and particular/special requirement
The combination of plate or non-metallic 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, diamond 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.
Integrated fume denitrification apparatus described in the utility model for a kind of filling denitrating catalyst and catalyst coat, this
Utility model is structurally reasonable, easily manufactured, has the function of denitration while Mist heat recovering, realizes denitration heat exchange one
Change, saved space occupied, and the catalyst loading and unloading loaded in exhaust gases passes is convenient, it, only need to be inactivation after catalyst inactivation
Catalyst is drawn off, and recharges the catalyst of raw catelyst or regeneration activation.
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 (10)
1. a kind of integrated fume denitrification apparatus for loading denitrating catalyst and catalyst coat, including side frame and heat exchange core
Body, the side frame are located at the heat exchange core body two opposite sides, and the quadrangle of the heat exchange core body is fixed by the corresponding positioning of corner post,
The heat exchange core body includes spoiler between several heat exchanger plates, adjacent heat exchanger plates, side coupling bar connected components, angle coupling bar connected components
And side sealing strip, it is characterised in that: the arbitrary neighborhood heat exchanger plates of several heat exchanger plates form the exhaust gases passes and cold flow of right-angled intersection
Body channel, and exhaust gases passes and cold fluid pass are not connected, the exhaust gases passes include gas inlet and cigarette setting up and down
Gas outlet, the cold fluid pass include the cold fluid inlet and cold fluid outlet that front and back is arranged, filling in the exhaust gases passes
It is provided with denitrating catalyst, the heat exchange plate surface coating is provided with catalyst coat.
2. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 1, special
Sign is: the denitrating catalyst includes preformed catalyst and bulk catalyst, and the preformed catalyst is corrugated plate shape or S shape
Or polyline shaped or " herring-bone form " or rectangular or square honeycomb or hexagonal honeycomb that flue gas circulation passage is formed with heat exchanger plates
The combination of shape or other and the irregular shape catalyst or above structure of heat exchanger plates formation flue gas circulation passage, the corrugated plate shape catalysis
Agent is to be packed among dual damascene plate or S shape to press from both sides plate catalyst structure or be packed among dual damascene plate or S shape to have gold
The structure of the spacing of category or non-metallic material support；The bulk catalyst be graininess or column of various shapes and/or
Sphere and/or various shape body are capable of forming the composite structure in gap and space.
3. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 2, special
Sign is: be provided on the preformed catalyst several regular arrangements various shape rule and/or irregular hole.
4. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 1, special
Sign is: using riveting or being bolted or bolt riveting combination connection, and connects between adjacent heat exchanger plates in heat exchanger plates
Contacting surface is coated with heat-proof corrosion resistant and loses inorganic or organic sealant sealing.
5. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 1, special
Sign is: using welded connecting between adjacent heat exchanger plates.
6. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 1, special
Sign is: adjacent heat exchanger plates are welded to connect by the sealing strip between heat exchanger plates.
7. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 1, special
Sign is: the heat exchanger plates are bolted with corner post or riveting, and heat-proof corrosion resistant erosion is coated in the two contact surface
Inorganic or organic sealant sealing.
8. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 1, special
Sign is: the heat exchanger plates and corner post are using welded connecting.
9. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 1, special
Sign is: the denitrating catalyst is arranged by the supports support among exhaust gases passes and exit.
10. the integrated fume denitrification apparatus of filling denitrating catalyst and catalyst coat according to claim 1, special
Sign is: the heat exchange plate surface coating of the exhaust gases passes side is provided with catalyst coat.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230887A (en) * | 2021-04-13 | 2021-08-10 | 河南柴油机重工有限责任公司 | SCR (Selective catalytic reduction) catalytic converter with high catalytic efficiency |
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2018
- 2018-10-19 CN CN201821696587.4U patent/CN208990569U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230887A (en) * | 2021-04-13 | 2021-08-10 | 河南柴油机重工有限责任公司 | SCR (Selective catalytic reduction) catalytic converter with high catalytic efficiency |
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