CN109884242A - A kind of test device and evaluation method based on catalyst load filtrate denitration effect - Google Patents
A kind of test device and evaluation method based on catalyst load filtrate denitration effect Download PDFInfo
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- CN109884242A CN109884242A CN201910215838.5A CN201910215838A CN109884242A CN 109884242 A CN109884242 A CN 109884242A CN 201910215838 A CN201910215838 A CN 201910215838A CN 109884242 A CN109884242 A CN 109884242A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The present invention relates to denitrating catalyst detection technique field, in particular to a kind of test device and evaluation method based on catalyst load filtrate denitration effect.Including flue gas bottle, reducing agent gas bottle, gas mixer chamber, denitration reaction room, the high-temperature resistant glass tube of the denitration reaction room being internally provided with for placing denitrating catalyst load filtrate, it is connected separately with first gas concentration sensor and second gas concentration sensor in the rear and front end of denitration reaction room, by detection pollution gas by the denitration effect of you can get it denitrating catalyst the loads filtrate of the nitrous oxides concentration before and after denitration reaction room.The configuration of the present invention is simple, it is easy to use, the denitrification apparatus of filtrate is loaded by being placed with catalyst, accurately detects catalyst load filtrate to the denitration effect of the flue gas containing nitrogen oxides.
Description
Technical field
It is the present invention relates to denitrating catalyst detection technique field, in particular to a kind of based on catalyst load filtrate denitration effect
The test device and evaluation method of fruit.
Background technique
As the productivity of human society is constantly progressive, industry is also with rapid development, but the following problems
Also start to highlight, environmental problem is one of them.Since various exhaust gas, waste water, waste residue can be generated in industrial processes, this
A little industrial production waste discharges can undoubtedly cause damages to environment into natural environment, and with advances in technology, people gradually anticipate
Know influence of the discharge of industrial waste gas to environment to be the largest, it is therein toxic in addition to particulate matters such as the dust that wherein contains
Pernicious gas ingredient can also impact human health.And different enterprises operating condition is different, ingredient in the flue gas of discharge
Different, gas cleaning is not only that the gas dust content of discharge is made to be up to state standards, it is often more important that removes nitrogen oxidation
The pernicious gases ingredient such as object.
SCR technology (SCR) is a kind of common technology for handling pernicious gas in discharge flue gas.So-called SCR
Technology is to be carried on carrier by catalyst, with NH3For reducing agent, nitrogen oxides is reduced to nitrogen under the action of catalyst
Reach a kind of technology of denitration purpose with water.In the art, the NH in flue gas3And NOx(nitrogen oxides) and oxygen occur
Reaction.NH3The chemical reaction mainly occurred during SCR denitration is as follows:
4NH3+4NO+O2 =4N2+6H2O ；4NH3+2NO2+O2 =3N2+6H2O
The harmful oxides of nitrogen gas such as nitric oxide, nitrogen dioxide flow through load have the carrier of catalyst after, how many nitrogen oxygen
Compound be decomposed i.e. denitration effect how, denitration effect is evaluated there are many method at present, basic principle is identical, that is, allowing has
Evil gas flows through carrier, calculates denitrification rate, but the ways and means implemented according to amount of nitrogen oxides variation before and after carrier
It is different.
Patent CN102103047A discloses a kind of method and apparatus for fume denitration catalyst activity detection,
This method accurately controls the Main Components of simulated flue gas, and simulated flue gas completes denitration after entering the reactor equipped with catalyst to be measured
Reaction process detects reactor front and back flue gas NO concentration situation of change by flue gas analyzer, to obtain the work of catalyst
Property.
In above-mentioned patent, apparatus system is simple, and state modulator is accurate, but the test device be for independent catalyst into
Capable denitration effect evaluation.For the purifying step for simplifying flue gas, it is often necessary to which dedusting denitrification integral has denitration to urge load
The high temperature resistance filtration material of agent, practical denitration and filtering are synchronous progress, can not evaluate denitration effect with above-mentioned apparatus.
Summary of the invention
In view of the deficienciess of the prior art, the technical problem to be solved by the invention is to provide one kind to be based on catalyst
The test device and evaluation method for loading filtrate denitration effect load the denitration evaluating apparatus of filtrate by being placed with catalyst,
Denitration is carried out to the flue gas containing nitrogen oxides, and detects the denitration effect of catalyst load filtrate.
The present invention to achieve the above object the technical solution adopted is that: it is a kind of based on catalyst load filtrate denitration effect
Test device including several flue gas bottles for smoke components in simulated atmosphere for filling gas with various, and fills reduction
Agent NH3Reducing agent gas bottle, the flue gas bottle and reducing agent gas bottle by pipeline be used for mixed flue gas and reduction
Agent NH3Gas mixer chamber connection, denitration reaction room is connected in the outlet end of gas mixer chamber, in the outlet of denitration reaction room
End is connected with chamber cleaning gas, and the gas after denitration reaction is discharged after chamber cleaning gas is handled, before and after denitration reaction room
Both ends are connected separately with first gas concentration sensor and second gas concentration sensor for detection gas ingredient and concentration,
The denitrating catalyst loads filtrate using high-temperature fibre as Nomex filtrate made of raw material, and equal on high-temperature fibre surface
Even load has granular MnO2Denitrating catalyst.
Further, the denitration reaction chamber interior is provided with the high temperature resistant glass for placing denitrating catalyst load filtrate
One end of glass pipe, the high-temperature resistant glass tube is connect by pipeline with gas mixer chamber, and the other end passes through pipeline and gas purification
Room connection.
Further, the flue gas includes oxygen, nitrogen and nitrogen oxides, and the nitrogen oxides includes NO, NO2。
Further, the high-temperature fibre includes polyphenylene sulfide fibre, polyimide fiber, polytetrafluoroethylene fibre,
The Nomex filtrate is that one layer is added among two layers of non-woven cloth made of high-temperature fibre made of high-temperature fibre
Base fabric, by way of pinprick reinforcement made of felted non-woven fabric material, the MnO2The grain diameter of denitrating catalyst is
500~800nm, the denitrating catalyst load filtrate size shape is identical as the cross section of high-temperature resistant glass tube, the denitration
Catalyst load filtrate with a thickness of 2.5~4.5mm.
Further, the temperature controller for controlling denitration reaction room temperature, institute are provided on the denitration reaction room
Denitration reaction chamber interior is stated to be provided with for improving flue gas and reducing agent NH3The heater of temperature.
Further, the exit of the flue gas bottle and reducing agent gas bottle is provided with the flow of control gas flow
Meter.
The invention also discloses a kind of evaluation methods based on catalyst load filtrate denitration effect, include the following steps:
(1) NH in flue gas difference component and reducing agent gas bottle being contained in different flue gas bottles3Pass through flowmeter control
The ratio and flow velocity of controlling inflow gas mixing chamber, and be sufficiently mixed in gas mixer chamber；
(2) mixed gas is put after first gas concentration sensor detects the wherein concentration of nitrogen oxides by pipeline inflow
It is placed in the indoor high-temperature resistant glass tube of denitration reaction, and progress denitration is anti-during flowing through denitrating catalyst load filtrate
It answers, denitration reaction room need to be preheated to 80 DEG C~220 DEG C in advance；
(3) mixed gas after denitration reaction flows through second gas concentration sensor, and detects nitrogen oxides after denitration reaction
Concentration is discharged after then being handled by chamber cleaning gas；
(4) it by comparing the concentration of nitrogen oxides in first gas concentration sensor and second gas concentration sensor, calculates
The denitration efficiency of denitrating catalyst load filtrate is 40%~95% out, and following formula is the calculation formula of out of stock efficiency (η):
η=(C1-C2)/C1*100%
In formula, C1For the nitrous oxides concentration of first gas concentration sensor detection；C2For the detection of second gas concentration sensor
Nitrous oxides concentration.
Further, the content of the nitrogen oxides in effluent is 0.03%~0.07%, the reducing agent NH3With nitrogen oxidation
The molar ratio of object is 0.8~1.5:1.
Further, the flue gas and reducing agent NH3Overall flow rate be 140~150 mL/min.
Beneficial effect the present invention is based on the test device of catalyst load filtrate denitration effect and evaluation method is:
By adjusting the flowmeter of gas bottle, the mixed proportion of gas with various can adjust, gas mixer chamber can be sufficiently mixed by gas
Conjunction is reacted again, and the temperature controller and heater on denitration reaction room can monitor the temperature of denitration reaction room in real time, make it
The dosage for stablizing the denitrating catalyst load filtrate in the temperature for being suitble to denitration reaction, denitration reaction room can be according to the actual situation
The content of middle nitrogen oxides is adjusted, the first gas concentration sensor and being connected to before and after denitration reaction room by comparing
Two gas concentration sensors nitrous oxides concentration detected can obtain the denitration effect of denitrating catalyst load filtrate.
Denitrating catalyst load filtrate is made complete with the size shape of denitration reaction room high-temperature resistant glass tube cross section
Unanimously, it and is vertically arranged in high-temperature resistant glass tube, can make all pass through denitration by all gas of denitration reaction room
It after catalyst loads filtrate, can just flow out, and then all pernicious gases is made all to load filtrate by denitrating catalyst
It is filtered, gas mixer chamber mixes complete gas and flowed into thicker high-temperature resistant glass tube through piping, makes gas and takes off
The contact that denox catalyst loads filtrate is more uniform, and denitration effect is more preferable, and the denitration efficiency measured is more accurate.
The reducing agent NH being passed through3N can be generated with reaction of nitrogen oxides2And water, wherein working as NH3With the molar ratio of nitrogen oxides
When being worth lower, denitration reaction cannot be carried out sufficiently；Work as NH3When higher with the molar ratio of nitrogen oxides, denitration efficiency is improved, but
NH may occur3Escape, causes atmosphere secondary pollution, therefore by NH30.8~1.5:1 is set as with the molar ratio of nitrogen oxides.
The configuration of the present invention is simple, it is easy to use, the denitrification apparatus of filtrate is loaded by being placed with catalyst, it is accurate to detect
Denitration effect of the catalyst load filtrate to the flue gas containing nitrogen oxides out.
Detailed description of the invention
Fig. 1 is test device structure chart of the invention；
Fig. 2 is the enlarged drawing that denitrating catalyst loads filtrate in test device；
Fig. 3 is the scanning electron microscope (SEM) photograph that denitrating catalyst loads filtrate.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described in further details the present invention；
Embodiment 1:
As shown in Figure 1, 2, 3, a kind of test device based on catalyst load filtrate denitration effect, including several fill different gas
The flue gas bottle 1 for smoke components in simulated atmosphere of body, and fill reducing agent NH3Reducing agent gas bottle 2, the cigarette
The exit of gas gas bottle 1 and reducing agent gas bottle 2 is provided with the flowmeter 3 of control gas flow, and passes through pipeline and be used for
Mixed flue gas and reducing agent NH3Gas mixer chamber 4 connect, be connected with denitration reaction room 5 in the outlet end of gas mixer chamber 4,
The denitration reaction room 5 is internally provided with the resistance to height of cylinder that the diameter for placing denitrating catalyst load filtrate 8 is 10cm
Warm glass tube 14, denitrating catalyst load 8 diameter of filtrate is 10cm, and the denitrating catalyst load filtrate 8 uses resistance to height
Polyphenylene sulfide fibre in warm fiber 9 is Nomex filtrate made of raw material, and is had in polyphenylene sulfide fibre surface uniform load
The MnO of irregular particle shape2Denitrating catalyst 10, the MnO2The grain diameter of denitrating catalyst 10 is 500nm, the denitration
Catalyst load filtrate 8 with a thickness of 3mm, the Nomex filtrate is in two layers of non-woven cloth made of polyphenylene sulfide fibre
Between be added one layer of base fabric made of polyphenylene sulfide fibre, by way of pinprick reinforcement made of felted non-woven fabric material,
One end of the high-temperature resistant glass tube 14 is connect by pipeline with gas mixer chamber 4, and the other end passes through pipeline and chamber cleaning gas
13 connections, are provided with the temperature controller 6 for adjusting denitration reaction room temperature, in denitration reaction room 5 on denitration reaction room 5
It is internally provided with for improving flue gas and reducing agent NH3The heater 7 of temperature connects respectively in the rear and front end of denitration reaction room 5
It is connected to first gas concentration sensor 11 and the second gas concentration sensor 12 for detection gas ingredient and concentration, in denitration
The exit of reaction chamber 5 is connected with chamber cleaning gas 13 by pipeline, and the gas after denitration reaction is handled through chamber cleaning gas 13
After be discharged.
The invention also discloses a kind of evaluation methods based on catalyst load filtrate denitration effect, include the following steps:
(1) NO in different flue gas bottles 1,02, N2And the NH in reducing agent gas bottle 23It is controlled by flowmeter 3 and flows into gas
The ratio and flow velocity of body mixing chamber, wherein in flue gas, the content of each component is N2It is 94.95%, 02For 5%, NO 0.05%, institute
State reducing agent NH3With NO molar ratio be 1:1, flue gas and NH3Overall flow rate be 130 mL/min；
(2) gas after gas mixer chamber 4 is sufficiently mixed, the concentration for detecting wherein NO through first gas concentration sensor 11 are
200mg/m3, the cylindrical high-temperature resistant glass tube inside denitration reaction room 5 is then flowed by pipeline, is hung down in high-temperature resistant glass tube
It is directly placed with the denitrating catalyst that diameter is 10cm and loads filtrate 8, denitration reaction room 5 need to be preheated to 200 DEG C in advance；
(3) mixed gas after denitration reaction flows through second gas concentration sensor 12, and detects the concentration of NO after denitration reaction
For 60mg/m3, it is discharged after then being handled by chamber cleaning gas 13；
(4) by comparing the concentration of NO in first gas concentration sensor 11 and second gas concentration sensor 12, denitration is obtained
The denitrification rate that catalyst loads filtrate 8 is 70%.
Embodiment 2:
As shown in Figure 1, 2, 3, a kind of test device based on catalyst load filtrate denitration effect, including several fill different gas
The flue gas bottle 1 for smoke components in simulated atmosphere of body, and fill reducing agent NH3Reducing agent gas bottle 2, the cigarette
The exit of gas gas bottle 1 and reducing agent gas bottle 2 is provided with the flowmeter 3 of control gas flow, and passes through pipeline and be used for
Mixed flue gas and reducing agent NH3Gas mixer chamber 4 connect, be connected with denitration reaction room 5 in the outlet end of gas mixer chamber 4,
The denitration reaction room 5 is internally provided with the resistance to height of cylinder that the diameter for placing denitrating catalyst load filtrate 8 is 10cm
Warm glass tube 14, denitrating catalyst load 8 diameter of filtrate is 10cm, and the denitrating catalyst load filtrate 8 uses resistance to height
Polyphenylene sulfide fibre in warm fiber 9 is Nomex filtrate made of raw material, and is had in polyphenylene sulfide fibre surface uniform load
The MnO of irregular particle shape2Denitrating catalyst 10, the MnO2The grain diameter of denitrating catalyst 10 is 600nm, the denitration
Catalyst load filtrate 8 with a thickness of 2.5mm, the Nomex filtrate is two layers of non-woven cloth made of polyphenylene sulfide fibre
Centre be added one layer of base fabric made of polyphenylene sulfide fibre, by way of pinprick reinforcement made of felted non-woven cloth material
One end of material, the high-temperature resistant glass tube 14 is connect by pipeline with gas mixer chamber 4, and the other end passes through pipeline and gas purification
Room 13 connects, and the temperature controller 6 for adjusting denitration reaction room temperature is provided on denitration reaction room 5, in denitration reaction
Room 5 is internally provided with for improving flue gas and reducing agent NH3The heater 7 of temperature is distinguished in the rear and front end of denitration reaction room 5
It is connected with first gas concentration sensor 11 and the second gas concentration sensor 12 for detection gas ingredient and concentration, de-
The exit of nitre reaction chamber 5 is connected with chamber cleaning gas 13 by pipeline, the gas after denitration reaction through chamber cleaning gas 13 at
It is discharged after reason.
The invention also discloses a kind of evaluation methods based on catalyst load filtrate denitration effect, include the following steps:
(1) NO in different flue gas bottles 12, 02, N2And the NH in reducing agent gas bottle 23It is controlled by flowmeter and flows into gas
The ratio and flow velocity of body mixing chamber, wherein in flue gas, the content of each component is N2It is 96.97%, 02For 3%, NO2It is 0.03%,
The reducing agent NH3With NO2Molar ratio is 0.8:1, flue gas and NH3Overall flow rate be 140mL/min；
(2) gas after gas mixer chamber 5 is sufficiently mixed detects wherein NO through first gas concentration sensor 112Concentration
For 150mg/m3, the cylindrical high-temperature resistant glass tube inside denitration reaction room 5 is then flowed by pipeline, in high-temperature resistant glass tube
It is vertically placed with the denitrating catalyst that diameter is 10cm and loads filtrate 8, denitration reaction room 5 need to be preheated to 80 DEG C in advance；
(3) mixed gas after denitration reaction flows through second gas concentration sensor 12, and detects NO after denitration reaction2Concentration
For 90mg/m3, it is discharged after then being handled by chamber cleaning gas 13；
(4) by comparing NO in first gas concentration sensor 11 and second gas concentration sensor 122Concentration, obtain denitration
The denitrification rate that catalyst loads filtrate 8 is 40%.
Embodiment 3:
As shown in Figure 1, 2, 3, a kind of test device based on catalyst load filtrate denitration effect, including several fill different gas
The flue gas bottle 1 for smoke components in simulated atmosphere of body, and fill reducing agent NH3Reducing agent gas bottle 2, the cigarette
The exit of gas gas bottle 1 and reducing agent gas bottle 2 is provided with the flowmeter 3 of control gas flow, and passes through pipeline and be used for
Mixed flue gas and reducing agent NH3Gas mixer chamber 4 connect, be connected with denitration reaction room 5 in the outlet end of gas mixer chamber 4,
The denitration reaction room 5 is internally provided with the resistance to height of cylinder that the diameter for placing denitrating catalyst load filtrate 8 is 10cm
Warm glass tube 14, denitrating catalyst load 8 diameter of filtrate is 10cm, and the denitrating catalyst load filtrate 8 uses resistance to height
Polyphenylene sulfide fibre in warm fiber 9 is Nomex filtrate made of raw material, and is had in polyphenylene sulfide fibre surface uniform load
The MnO of irregular particle shape2Denitrating catalyst 10, the MnO2The grain diameter of denitrating catalyst 10 is 800nm, the denitration
Catalyst load filtrate 8 with a thickness of 4.5mm, the Nomex filtrate is two layers of non-woven cloth made of polyphenylene sulfide fibre
Centre be added one layer of base fabric made of polyphenylene sulfide fibre, by way of pinprick reinforcement made of felted non-woven cloth material
One end of material, the high-temperature resistant glass tube 14 is connect by pipeline with gas mixer chamber 4, and the other end passes through pipeline and gas purification
Room 13 connects, and the temperature controller 6 for adjusting denitration reaction room temperature is provided on denitration reaction room 5, in denitration reaction
Room 5 is internally provided with for improving flue gas and reducing agent NH3The heater 7 of temperature is distinguished in the rear and front end of denitration reaction room 5
It is connected with first gas concentration sensor 11 and the second gas concentration sensor 12 for detection gas ingredient and concentration, de-
The exit of nitre reaction chamber 5 is connected with chamber cleaning gas 13 by pipeline, the gas after denitration reaction through chamber cleaning gas 13 at
It is discharged after reason.
The invention also discloses a kind of evaluation methods based on catalyst load filtrate denitration effect, include the following steps:
(1) NO in different flue gas bottles 12, 02, N2And the NH in reducing agent gas bottle 23It is controlled by flowmeter and flows into gas
The ratio and flow velocity of body mixing chamber, wherein in flue gas, the content of each component is N2It is 93.93%, 02For 6%, NO2It is 0.07%, institute
State reducing agent NH3With NO2Molar ratio is 1.5:1, flue gas and NH3Overall flow rate be 150 mL/min；
(2) gas after gas mixer chamber 5 is sufficiently mixed detects wherein NO through first gas concentration sensor 112Concentration
For 250mg/m3, the cylindrical high-temperature resistant glass tube inside denitration reaction room 5 is then flowed by pipeline, in high-temperature resistant glass tube
It is vertically placed with the denitrating catalyst that diameter is 10cm and loads filtrate 8, denitration reaction room 5 need to be preheated to 220 DEG C in advance；
(3) mixed gas after denitration reaction flows through second gas concentration sensor 12, and detects NO after denitration reaction2Concentration
For 12.5mg/m3, it is discharged after then being handled by chamber cleaning gas 13；
(4) by comparing NO in first gas concentration sensor 11 and second gas concentration sensor 122Concentration, obtain denitration
The denitrification rate that catalyst loads filtrate 8 is 95%.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment
Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.
Claims (9)
1. a kind of test device based on catalyst load filtrate denitration effect, it is characterised in that: fill different gas including several
The flue gas bottle for smoke components in simulated atmosphere of body, and fill reducing agent NH3Reducing agent gas bottle, the flue gas
Gas bottle and reducing agent gas bottle by pipeline and are used for mixed flue gas and reducing agent NH3Gas mixer chamber connection, in gas
The outlet end of mixing chamber is connected with denitration reaction room, is connected with chamber cleaning gas, denitration reaction in the outlet end of denitration reaction room
Gas afterwards is discharged after chamber cleaning gas is handled, the rear and front end of denitration reaction room be connected separately with for detection gas at
Divide and the first gas concentration sensor and second gas concentration sensor of concentration, the denitrating catalyst load filtrate with resistance to height
Warm fiber is Nomex filtrate made of raw material, and has granular MnO in high-temperature fibre surface uniform load2Denitration catalyst
Agent.
2. the test device according to claim 1 based on catalyst load filtrate denitration effect, it is characterized in that: described de-
Nitre reaction chamber is internally provided with the high-temperature resistant glass tube for placing denitrating catalyst load filtrate, the high-temperature resistant glass tube
One end is connect by pipeline with gas mixer chamber, and the other end is connect by pipeline with chamber cleaning gas.
3. the test device according to claim 1 based on catalyst load filtrate denitration effect, it is characterized in that: the cigarette
Gas bag includes oxygen, nitrogen and nitrogen oxides, and the nitrogen oxides includes NO, NO2。
4. the test device according to claim 1 based on catalyst load filtrate denitration effect, it is characterized in that: described resistance to
High temperature fiber includes polyphenylene sulfide fibre, and polyimide fiber, polytetrafluoroethylene fibre, the Nomex filtrate is two layers by resistance to
One layer of base fabric made of high-temperature fibre, the system by way of pinprick reinforcement are added among non-woven cloth made of high temperature fiber
At felted non-woven fabric material, the MnO2The grain diameter of denitrating catalyst is 500~800nm, the denitrating catalyst
Load that filtrate size shape is identical as the cross section of high-temperature resistant glass tube, denitrating catalyst load filtrate with a thickness of 2.5
~4.5mm.
5. the test device according to claim 1 based on catalyst load filtrate denitration effect, it is characterized in that: described de-
The temperature controller for controlling denitration reaction room temperature is provided on nitre reaction chamber, the denitration reaction chamber interior setting is useful
In raising flue gas and reducing agent NH3The heater of temperature.
6. the test device according to claim 1 based on catalyst load filtrate denitration effect, it is characterized in that: the cigarette
The exit of gas gas bottle and reducing agent gas bottle is provided with the flowmeter of control gas flow.
7. a kind of evaluation method based on catalyst load filtrate denitration effect, uses claim 1~6 any claim institute
The test device based on catalyst load filtrate denitration effect stated, which is characterized in that the step of evaluation method is as follows:
(1) NH in flue gas difference component and reducing agent gas bottle being contained in different flue gas bottles3It is controlled by flowmeter
The ratio and flow velocity of inflow gas mixing chamber, and be sufficiently mixed in gas mixer chamber；
(2) mixed gas is put after first gas concentration sensor detects the wherein concentration of nitrogen oxides by pipeline inflow
It is placed in the indoor high-temperature resistant glass tube of denitration reaction, and progress denitration is anti-during flowing through denitrating catalyst load filtrate
It answers, denitration reaction room need to be preheated to 80 DEG C~220 DEG C in advance；
(3) mixed gas after denitration reaction flows through second gas concentration sensor, and detects nitrogen oxides after denitration reaction
Concentration is discharged after then being handled by chamber cleaning gas；
(4) it by comparing the concentration of nitrogen oxides in first gas concentration sensor and second gas concentration sensor, calculates
The denitration efficiency of denitrating catalyst load filtrate is 40%~95% out.
8. the evaluation method according to claim 7 based on catalyst load filtrate denitration effect, it is characterized in that: the cigarette
The content of nitrogen oxides is 0.03%~0.07% in gas, the reducing agent NH3Molar ratio with nitrogen oxides is 0.8~1.5:1.
9. the evaluation method according to claim 7 based on catalyst load filtrate denitration effect, it is characterized in that: the cigarette
Gas and reducing agent NH3Overall flow rate be 140~150 mL/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660225A (en) * | 2022-03-18 | 2022-06-24 | 合肥丰德科技股份有限公司 | Detection system for denitration efficiency of ceramic filter element catalyst |
| CN115327024A (en) * | 2022-08-04 | 2022-11-11 | 中国恩菲工程技术有限公司 | Denitration catalysis filter material capability test device |
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