CN208824264U - A kind of device of selectivity heatable catalytic processing exhaust gas - Google Patents
A kind of device of selectivity heatable catalytic processing exhaust gas Download PDFInfo
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- CN208824264U CN208824264U CN201820834961.6U CN201820834961U CN208824264U CN 208824264 U CN208824264 U CN 208824264U CN 201820834961 U CN201820834961 U CN 201820834961U CN 208824264 U CN208824264 U CN 208824264U
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- exhaust gas
- heatable catalytic
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Abstract
The utility model provides a kind of device of selective heatable catalytic processing exhaust gas, it includes heatable catalytic processing module, the heatable catalytic processing module includes several processing units interconnected arranged side by side, and the processing unit is equipped with the microtubules passed through for gas；The tube wall of the microtubules, which is negative, is loaded with the catalyst carrier of catalyst, and the catalyst carrier is Fe or Fe alloy/Al2O3Or Fe or Fe alloy/ZrO2Composite material；The heatable catalytic processing module is equipped with electric heating connector, and the electric heating connector is electrically connected with Fe the or Fe alloy of catalyst carrier, and the internal diameter of the microtubules is no more than 1000 μm.Using the technical solution of the utility model, heatable catalytic is carried out just for the pernicious gas in exhaust gas, energy consumption is greatly reduced, improves catalytic efficiency.
Description
Technical field
The utility model relates to a kind of emission-control equipment more particularly to a kind of dresses of selective heatable catalytic processing exhaust gas
It sets.
Background technique
The initiation temperature of catalysis burning is a key factor for influencing catalytic effect, after exhaust gas enters catalysis system,
The initiation temperature of catalysis burning used must be reached, catalysis reaction just can be carried out.In general, exhaust gas is needed in relatively high temperature
The lower active material generation that could be coated with carrier surface of degree is sufficiently reacted, when the temperature of exhaust gas or carrier is too low, Wu Fada
To the initiation temperature of catalysis burning, can clean-up effect be greatly reduced.Existing exhaust fume catalytic Processing tecchnics are especially low dense
The catalysis treatment technique of exhaust gas is spent, generally contains three big separate functional blocks, as shown in Figure 1, it may be assumed that exhaust gas concentration → heating → catalysis
Processing.Wherein exhaust gas concentration module includes the cyclic process of adsorbent absorption exhaust gas desorption again.Therefore, a whole set of exhaust fume catalytic is controlled
Reason device volume is quite huge and energy consumption is very high.Although the prior art can save " exhaust gas concentration " step, " heating " process
In currently used catalytic reaction system be before exhaust gas enters catalytic reactor to exhaust gas carry out heat temperature raising, so that exhaust gas is heated up
The initiation temperature required to catalysis reaction, and by this heat transfer to catalytic converter.Therefore for lower than initiation temperature into
Gas, it is necessary to preheating section is set before carrying out catalysis reaction and is preheated, temperature needed for making exhaust gas reach catalysis reaction.
The waste treatment device of the prior art is primarily present following obvious technical problem and defect:
It, generally need to be with m 1. device volume is huge3For unit computing device volume.
2. energy consumption is high.Exhaust gas is handled using the above method, needs that preheating device is arranged before catalyst reaction, increases and urge
Change complexity and the reaction time of reaction system, and preheating device is all to heat the exhaust gas of all discharges, but simultaneously
The exhaust gas of not all discharge, which is involved in, is catalyzed reaction, and the discharge that only accounts for that catalysis is reacted occurs with catalyst surface active substance and gives up
The sub-fraction of gas, therefore heating all waste gases certainly will will cause unnecessary energy consumption.Furthermore if exhaust gas first passes through concentration
Processing, technique be usually need constantly to carry out heating up again through elevated temperature desorption after cryogenic absorption → cooling → heat up → drop
The process of temperature ..., certainly will will cause a large amount of energy consumption.
3. exhaust fume catalytic regulation effect is bad.Gas after heating is when entering carrier since there are heat loss to lead to gas
Temperature reduces, thus temperature needed for being unable to reach catalysis reaction；If gas to be heated to excessively high temperature, it is also possible to cause
The temperature of active material is excessively high to reduce catalytic effect on carrier, even results in catalyst failure.Therefore pre-add hot gas is used
Body handles exhaust gas, and technology controlling and process is bad to be difficult to reach optimal clean-up effect.
Utility model content
Against the above technical problems, the utility model discloses a kind of devices of selective heatable catalytic processing exhaust gas, only
Heatable catalytic is carried out for the pernicious gas in exhaust gas, greatly reduces energy consumption, while improving at catalytic efficiency and catalysis
Reason ability.
In this regard, the technical solution of the utility model are as follows:
A kind of device of selectivity heatable catalytic processing exhaust gas comprising heatable catalytic processing module, the heatable catalytic
Processing module includes several processing units interconnected arranged side by side, and the processing unit is small equipped with passing through for gas
Pipe；The tube wall of the microtubules, which is negative, is loaded with the catalyst carrier of catalyst, the catalyst carrier be Fe or Fe alloy/
Al2O3Or Fe or Fe alloy/ZrO2Composite material, the Al in the composite material2O3Or ZrO2Material layer with by microtubules
Gas contacts and adsorbs harmful components；The heatable catalytic processing module be equipped with electric heating connector, the electric heating connector with urge
Fe the or Fe alloy of agent carrier is electrically connected, and the internal diameter of the microtubules is no more than 1000 μm.Wherein, the microtubules
Tube wall, which is negative, is loaded with the catalyst carrier of catalyst, and microtubules can be microtubules made of catalyst carrier, then catalyst
Carrier can be in the inside and outside wall of microtubules；The inner wall for being also possible to microtubules is catalyst carrier.Microtubules can be straight tube,
Or the pipe of curved other shapes.The active constituent of the catalyst is platinum, palladium, rare earth element etc..The catalyst
Dosage it is identical as conventional method；Preferably 1-10mg/cm3。
In above scheme, the processing unit is equipped with the microtubules passed through for gas, and gas to be processed is single from processing
One end entrance of member enters, i.e., enters from one end of microtubules, after catalyst carrier selective absorption catalytic treatment, from
The other end for managing unit exports discharge, i.e., is discharged from the other end of microtubules.
It adopting this technical solution, exhaust gas is during passing through microtubules, so that exhaust gas is before heatable catalytic, harmful components
(VOCs) it after first being adsorbed by catalyst choice, is heated, released after catalytic treatment again carrying intracorporal gas after absorption,
It is discharged from microtubules；And be discharged if accounting for most harmless components (such as oxygen, nitrogen etc.) in exhaust gas by microtubules, it will not be by
Absorption heating is also not involved in catalysis reaction, greatly reduces energy consumption, improve catalytic efficiency and catalytic treatment ability.It is described
Exhaust gas is not necessarily to preparatory concentration, and the catalyst that exhaust gas directly passes through heating is reacted by catalysis.
In addition, the Al used2O3And ZrO2For ceramic-like materials, there is good thermal insulation property, Fe or Fe alloy is by leading
Electric heating transfers heat to the intrapore sky in catalyst carrier and catalyst carrier by heat radiation and heat transfer
Between, so that the intrapore harmful components temperature being attracted in catalytic carrier increases, and completes under the effect of the catalyst
Decomposition reaction；Because of Al2O3And ZrO2Heat for the insulation effect of ceramic-like materials, carrier inside can be maintained at load well
The inside of body material comes out without having a large amount of heat；And the most of harmless components of exhaust gas were accounted for originally and were being reacted
In the process without being heated, so that the temperature for the ingredient not being adsorbed by other of microtubules is influenced very little in this way, rise in this way
To heat preferably is utilized, heat utilization ratio is improved, while energy consumption greatly reduces.
Wherein, Fe the or Fe alloy/Al2O3Or Fe or Fe alloy/ZrO2Composite material is using Al2O3Or ZrO2It is molten
Liquid is coated on Fe or Fe alloy and obtains after drying.Fe or Fe alloy/Al of the prior art can also be used2O3Or Fe or Fe
Alloy/ZrO2The preparation method of composite material.
The microtubules are set side by side in axial as a further improvement of the utility model, the internal diameter of the microtubules
It is 420~840 μm.It adopts this technical solution, can have better choice adsoption catalysis effect.
The Al2O3 or ZrO as a further improvement of the utility model,2Material layer with a thickness of 20-200 μm.Into one
Step is preferred, the Al2O3、ZrO2Material layer with a thickness of 50-150 μm.
The Fe alloy is Fe-Zn, Fe-Cr or Fe-Ni alloy/C as a further improvement of the utility model,.
As a further improvement of the utility model, Fe the or Fe alloy material layer with a thickness of 100-700 μm.
The hole density of the microtubules of the processing unit is 400-900cpsi as a further improvement of the utility model,.
The length of the processing unit is not less than 40mm as a further improvement of the utility model,.
The length of the processing unit is 50-120mm as a further improvement of the utility model,.
It adopts this technical solution, in the case where considering cost, there is better catalytic treatment effect and lower discharge
Temperature.
Further, the altitude range 10-40cm of the heatable catalytic processing module.
The microtubules are using Fe or Fe alloy/Al as a further improvement of the utility model,2O3Or Fe or Fe
Alloy/ZrO2Composite material is rolled into corrugated ribbon, then the cylindrical body rolled into after being turned around obtains.
Compared with prior art, the utility model has the following beneficial effects:
First, waste gas purification is reduced due to not having to setting gas preheating unit using the technical solution of the utility model
The step of, and metallic carrier can be realized and be rapidly heated, and can reach required temperature in a short time when in use, work as exhaust gas
Catalysis reaction can occur when passing through carrier, improve purification efficiency.
Second, catalyst carrier be it is with suction-operated and can electrically heated metallic catalyst carrier, using Fe or
Fe alloy/Al2O3Or Fe or Fe alloy/ZrO2Composite material directly designs on a catalyst support as carrier material inner core
Electric heating connector connects to power supply, Fe or Fe alloy/Al2O3Or Fe or Fe alloy/ZrO2It is negative that composite material serves not only as carrier
The active material of carried catalyst, while Fe or Fe alloy is used as electric heater unit directly to carry out heat temperature raising, while Al again2O3、
ZrO2Material layer also has good insulation effect, due to be not heating all waste gases, only in exhaust gas by Catalyst Adsorption
Harmful components carry out catalysis burning processing, make gas heat and catalysis reaction have selectivity and specific aim, avoid consuming
More energy, energy conservation 30~70%, faster reaches stable emissions, and exhaust temperature is greatly reduced；Catalysis is improved simultaneously
Efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the device of the heatable catalytic processing exhaust gas of the prior art.
Fig. 2 is a kind of axial, cross-sectional view of the device of selective heatable catalytic processing exhaust gas of the utility model.
Fig. 3 is a kind of front view of the device of selective heatable catalytic processing exhaust gas of the utility model.
Fig. 4 is the preparation flow figure of the microtubules of the utility model heatable catalytic processing module.
Appended drawing reference includes: 1- heatable catalytic processing module, the small pipe unit of 2-, 3- electric heating connector.
Specific embodiment
With reference to the accompanying drawing, the preferably embodiment of the utility model is described in further detail.
Embodiment 1
A kind of device of selectivity heatable catalytic processing exhaust gas, as shown in Figures 2 and 3 comprising heatable catalytic handles mould
Block 1, the heatable catalytic processing module 1 include that small pipe unit 2 interconnected is set side by side in several axial directions, and is located at two
The air inlet and air outlet of side, the small pipe unit 2 are equipped with the microtubules passed through for gas；The small pipe unit 2 is
Load has the catalyst carrier of catalyst, Fe alloy/Al of the catalyst carrier material prior art2O3Composite material,
Middle Al2O3Material layer is located at the inner wall of microtubules, contacts with gas；The middle section of the heatable catalytic processing module 1 is equipped with electric heating
Connector 3, the electric heating connector 3 are electrically connected with the Fe alloy of catalyst carrier, and the internal diameter of the microtubules is 420~840 μm.
The hole density of the small pipe unit is 400~900cpsi；The length of the small pipe unit 2 is 80mm or so.
As shown in figure 4, the microtubules of the heatable catalytic processing module 1 are first by Fe alloy/Al2O3Composite material is logical
It crosses meshing gear and is rolled into corrugated ribbon, then turned around, the cylindrical body rolled into after turning around is as shown in figure 3, make Al2O3Layer is located at
The inner wall of microtubules, contacts with gas.
When carrying out the processing of exhaust gas using the device of above-mentioned selective heatable catalytic processing exhaust gas, by electric heating connector and electricity
Source connection is powered, and when there is exhaust gas to pass through, carrier is heated up after opening power supply with the heating rate of 30 DEG C/min, respectively in air inlet
The concentration and temperature that exhaust gas is nearby detected with gas outlet, evaluate the net of this method with the concentration of emission of benzene, temperature and transformation efficiency
Change effect.
Comparative example 1
Comparative example 1 by metal preheating device and coats activity using a kind of method of preheating gas formula catalysting processing waste gas
The catalyst carrier of substance is connected, carrier using ceramic material (size Φ 98mm × 83mm, the 400cpsi of catalyst carrier,
Surface is applied coated with Pt active material as main component), when work, exhaust gas same as Example 1 passes through metal first and preheats
Device is heated, then by ceramic carrier material catalytic treatment (Fig. 1), detects exhaust gas near air inlet and air outlet respectively
Concentration and temperature, the clean-up effect of this method is evaluated with the concentration of emission of benzene, temperature and transformation efficiency.
Embodiment 1 and comparative example 1 obtain to the results are shown in Table 1.
The Comparative result table of table 1 embodiment 1 and comparative example 1
From table 1 the results show that the benzene that the method for this case is implemented be emitted on 7 minutes it is i.e. stable, be far below comparative example 1
Discharges in 15 minutes stablize, conversion ratio is far better than comparative example 1.Using the emission-control equipment of the utility model, the place of gas
Reason conversion ratio significantly improves.It is not heating all waste gases, only in exhaust gas because being heated just for the gas after absorption
Catalysis burning processing is carried out by the harmful components of Catalyst Adsorption, compared with comparative example 1,5 minutes concentration of emissions are rapidly reached
Very low value, and exhaust temperature is lower than the gas temperature of comparative example 1；Just reach steady within the 10 minutes very short time
Fixed discharge, and the pollutant concentration of stable emissions, well below prior art comparative example, stable emissions temperature is also much low
In prior art comparative example, conversion ratio is improved, and reaches 98% or more.
The specific embodiment of the above is the better embodiment of the utility model, and it is practical new not to limit this with this
The specific implementation range of type, the scope of the utility model includes being not limited to present embodiment, all according to the utility model
Shape, structure made by equivalence changes it is within the protection scope of the present utility model.
Claims (8)
1. a kind of device of selectivity heatable catalytic processing exhaust gas, it is characterised in that: it includes heatable catalytic processing module, described
Heatable catalytic processing module includes several processing units interconnected arranged side by side, and the processing unit is equipped with to be passed through for gas
Microtubules；The tube wall of the microtubules, which is negative, is loaded with the catalyst carrier of catalyst, and the catalyst carrier is that Fe or Fe is closed
Gold/Al2O3Or Fe or Fe alloy/ZrO2Composite material；The heatable catalytic processing module is equipped with electric heating connector, and the electricity adds
Hot joint is electrically connected with Fe the or Fe alloy of catalyst carrier, and the internal diameter of the microtubules is no more than 1000 μm.
2. the device of selectivity heatable catalytic processing exhaust gas according to claim 1, it is characterised in that: the microtubules are in
It is axially set side by side, the internal diameter of the microtubules is 420 ~ 840 μm.
3. the device of selectivity heatable catalytic processing exhaust gas according to claim 1, it is characterised in that: the Al2O3Or
ZrO2Material layer with a thickness of 20-200 μm.
4. the device of selectivity heatable catalytic processing exhaust gas according to claim 3, it is characterised in that: the Fe alloy is
Fe-Zn, Fe-Cr or Fe-Ni alloy/C, Fe the or Fe alloy material layer with a thickness of 100-700 μm.
5. the device of selectivity heatable catalytic processing exhaust gas according to claim 3, it is characterised in that: the processing unit
Microtubules hole density be 400-900cpsi.
6. the device of selectivity heatable catalytic processing exhaust gas according to claim 5, it is characterised in that: the processing unit
Length be not less than 40mm.
7. the device of selectivity heatable catalytic processing exhaust gas according to claim 6, it is characterised in that: the processing unit
Length be 50-120mm.
8. the device of selectivity heatable catalytic processing exhaust gas according to claim 1, it is characterised in that: the microtubules are
Using Fe or Fe alloy/Al2O3Or Fe or Fe alloy/ZrO2Composite material is rolled into corrugated ribbon, then rolls into after being turned around
Cylindrical body obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820834961.6U CN208824264U (en) | 2018-05-31 | 2018-05-31 | A kind of device of selectivity heatable catalytic processing exhaust gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820834961.6U CN208824264U (en) | 2018-05-31 | 2018-05-31 | A kind of device of selectivity heatable catalytic processing exhaust gas |
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| CN208824264U true CN208824264U (en) | 2019-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479386A (en) * | 2018-05-31 | 2018-09-04 | 深圳市中金岭南科技有限公司 | A kind of device and processing method of selectivity heatable catalytic processing exhaust gas |
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2018
- 2018-05-31 CN CN201820834961.6U patent/CN208824264U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479386A (en) * | 2018-05-31 | 2018-09-04 | 深圳市中金岭南科技有限公司 | A kind of device and processing method of selectivity heatable catalytic processing exhaust gas |
| CN108479386B (en) * | 2018-05-31 | 2023-12-19 | 深圳市中金岭南科技有限公司 | Device and method for selectively heating and catalyzing waste gas |
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