CN109078495A - 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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- CN109078495A CN109078495A CN201811219683.4A CN201811219683A CN109078495A CN 109078495 A CN109078495 A CN 109078495A CN 201811219683 A CN201811219683 A CN 201811219683A CN 109078495 A CN109078495 A CN 109078495A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 129
- 239000003517 fume Substances 0.000 title claims abstract description 28
- 238000011068 loading method Methods 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000011049 filling Methods 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 29
- 239000003546 flue gas Substances 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000003595 mist Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 9
- 238000000465 moulding Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000002779 inactivation Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 230000003416 augmentation Effects 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001083492 Trapa Species 0.000 description 1
- 235000014364 Trapa natans Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003863 metallic catalyst Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Present invention 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.Structure of the invention is 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 present invention 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. 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 skill
Art；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.
Summary of the invention
The purpose of the present invention is to provide a kind of structurally reasonable, easily manufactured, have while Mist heat recovering de-
Nitre function, it is heat-exchange integrated to realize denitration, has saved space occupied, and the catalyst loading and unloading side loaded in exhaust gases passes
Just, after catalyst inactivation, decaying catalyst need to only be drawn off, recharges the catalyst of raw catelyst or regeneration activation
Load the integrated fume denitrification apparatus of denitrating catalyst and catalyst coat.
The technical scheme is that the integrated fume denitration dress of a kind of filling denitrating catalyst and catalyst coat
It sets, 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
It 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, the arbitrary neighborhood heat exchanger plates of several heat exchanger plates form the flue gas of right-angled intersection
Channel and cold fluid pass, and exhaust gases passes and cold fluid pass are not connected, the exhaust gases passes include cigarette setting up and down
Gas import and exhanst gas outlet, the cold fluid pass include the cold fluid inlet and cold fluid outlet that front and back is arranged, the flue gas
Filling is provided with denitrating catalyst in channel, and the heat exchange plate surface coating is provided with catalyst coat.
In a preferred embodiment of the present invention, the denitrating catalyst includes preformed catalyst and bulk catalyst, institute
State " herring-bone form " or rectangle that preformed catalyst is corrugated plate shape or S shape or polyline shaped or forms flue gas circulation passage with heat exchanger plates
Square honeycomb or hexagonal honeycomb shape or other the irregular shape catalyst or above-mentioned of flue gas circulation passage is formed with heat exchanger plates
The combination of structure, the corrugated plate shape catalyst are to be packed into folder plate catalyst structure or dress among dual damascene plate or S shape
Fill into the structure for thering is the spacing of metal or non-metallic material to support among dual damascene plate or S shape；The bulk catalyst is
Column and/or sphere and/or various shape body granular or of various shapes are capable of forming the composite structure in gap and space.
In a preferred embodiment of the present invention, the various shape of several regular arrangements is provided on the preformed catalyst
Regular and/or irregular hole.
In a preferred embodiment of the present invention, it using riveting or is bolted or bolt riveting between adjacent heat exchanger plates
Combination connection, and be coated with heat-proof corrosion resistant in heat exchanger plates contact surface and lose inorganic or organic sealant sealing.
In a preferred embodiment of the present invention, using welded connecting between adjacent heat exchanger plates.
In a preferred embodiment of the present invention, adjacent heat exchanger plates are welded to connect by the sealing strip between heat exchanger plates.
In a preferred embodiment of the present invention, the heat exchanger plates and corner post are bolted or riveting, and in the two
It is coated with heat-proof corrosion resistant in contact surface and loses inorganic or organic sealant sealing.
In a preferred embodiment of the present invention, the heat exchanger plates and corner post are using welded connecting.
In a preferred embodiment of the present invention, the support that the denitrating catalyst passes through among exhaust gases passes and exit
Part support setting.
In a preferred embodiment of the present invention, the heat exchange plate surface coating of the exhaust gases passes side is provided with catalyst
Coating.
Integrated fume denitrification apparatus of the present invention for a kind of filling denitrating catalyst and catalyst coat, the present invention
It is structurally reasonable, easily manufactured, have the function of denitration while Mist heat recovering, it is heat-exchange integrated to realize denitration, saves
Space occupied, and the catalyst loading and unloading loaded in exhaust gases passes is convenient, after catalyst inactivation, decaying catalyst need to only be unloaded
Out, the catalyst of raw catelyst or regeneration activation is recharged.
Detailed description of the invention
Fig. 1 is that the integrated fume denitrification apparatus one of a kind of filling denitrating catalyst and catalyst coat of the invention is preferably real
Apply the explosive view in example；
Fig. 2 is a kind of one preferred embodiment of integrated fume denitrification apparatus for loading denitrating catalyst and catalyst coat of the present invention
In the perspective view for being filled with single layer corrugated plating catalyst；
Fig. 3 is a kind of one preferred embodiment of integrated fume denitrification apparatus for loading denitrating catalyst and catalyst coat of the present invention
In the perspective view for being filled with the intermediate double-deck corrugated plating catalyst for being plate catalyst；
Fig. 4 is a kind of one preferred embodiment of integrated fume denitrification apparatus for loading denitrating catalyst and catalyst coat of the present invention
In the perspective view for being filled with herring-bone form catalyst；
Fig. 5 is a kind of one preferred embodiment of integrated fume denitrification apparatus for loading denitrating catalyst and catalyst coat of the present invention
In the perspective view for being filled with rectangular or square honeycombed catalyst；
The structural schematic diagram of heat exchanger plates, catalyst coat and desulphurization catalyst that Fig. 6 is Fig. 5；
Fig. 7 is a kind of one preferred embodiment of integrated fume denitrification apparatus for loading denitrating catalyst and catalyst coat of the present invention
In the perspective view for being filled with hexagonal honeycomb shape catalyst.
Specific embodiment
The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
Integrated fume denitrification apparatus of the present invention for a kind of filling denitrating catalyst and catalyst coat, such as Fig. 1
In conjunction with shown in 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, institute
The quadrangle for stating 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 exchanger plates
Between spoiler 4, while coupling bar connected components, angle coupling bar connected components and while sealing strip, the side sealing strip includes adjacent heat exchange
Flue gas side sealing strip 5 and air side sealing strip 6 between plate 3, the arbitrary neighborhood heat exchanger plates of several heat exchanger plates 3 form cross and hand over
The exhaust gases passes 7 and cold fluid pass 8 of fork, and exhaust gases passes 7 and cold fluid pass 8 are not connected, the exhaust gases passes 7 include
Gas inlet and exhanst gas outlet setting up and down, the cold fluid pass 8 include the cold fluid inlet and cold fluid of front and back setting
Outlet, the interior filling of the exhaust gases passes 7 are provided with denitrating catalyst 9, and the denitrating catalyst 9 is by exhaust gases passes centre and goes out
Supports support setting at mouthful, 3 surface of the heat exchanger plates coating of 7 side of exhaust gases passes are provided with catalyst and apply 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 of the present invention for a kind of filling denitrating catalyst and catalyst coat, the present invention
It is structurally reasonable, easily manufactured, have the function of denitration while Mist heat recovering, it is heat-exchange integrated to realize denitration, saves
Space occupied, and the catalyst loading and unloading loaded in exhaust gases passes is convenient, after catalyst inactivation, decaying catalyst need to only be unloaded
Out, the catalyst of raw catelyst or regeneration activation is recharged.
The foregoing is merely a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, any
Those skilled in the art within the technical scope disclosed by the invention, can without the variation that creative work is expected or
Replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Subject to fixed protection scope.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811219683.4A CN109078495A (en) | 2018-10-19 | 2018-10-19 | A kind of integrated fume denitrification apparatus loading denitrating catalyst and catalyst coat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811219683.4A CN109078495A (en) | 2018-10-19 | 2018-10-19 | A kind of integrated fume denitrification apparatus loading denitrating catalyst and catalyst coat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109078495A true CN109078495A (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811219683.4A Withdrawn CN109078495A (en) | 2018-10-19 | 2018-10-19 | A kind of integrated fume denitrification apparatus loading denitrating catalyst and catalyst coat |
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| Country | Link |
|---|---|
| CN (1) | CN109078495A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764695A (en) * | 2018-12-18 | 2019-05-17 | 西安交通大学 | A kind of condensing heat exchanger and method for gas fired-boiler denitrating flue gas |
| CN114887484A (en) * | 2022-05-30 | 2022-08-12 | 山东道简环保科技有限公司 | Circulating waste heat coupling type SCR denitration system |
-
2018
- 2018-10-19 CN CN201811219683.4A patent/CN109078495A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764695A (en) * | 2018-12-18 | 2019-05-17 | 西安交通大学 | A kind of condensing heat exchanger and method for gas fired-boiler denitrating flue gas |
| CN109764695B (en) * | 2018-12-18 | 2021-01-19 | 西安交通大学 | Condensing heat exchanger and method for denitration of flue gas of gas-fired boiler |
| CN114887484A (en) * | 2022-05-30 | 2022-08-12 | 山东道简环保科技有限公司 | Circulating waste heat coupling type SCR denitration system |
| CN114887484B (en) * | 2022-05-30 | 2023-12-08 | 浙江三维联合热电有限公司 | Circulating waste heat coupling type SCR denitration system |
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Application publication date: 20181225 |
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