CN108057343A - A kind of heat accumulating type selective reduction denitration device and denitrating technique - Google Patents
A kind of heat accumulating type selective reduction denitration device and denitrating technique Download PDFInfo
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- CN108057343A CN108057343A CN201610973372.1A CN201610973372A CN108057343A CN 108057343 A CN108057343 A CN 108057343A CN 201610973372 A CN201610973372 A CN 201610973372A CN 108057343 A CN108057343 A CN 108057343A
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- 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
- B01D53/90—Injecting reactants
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- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- 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
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
A kind of heat accumulating type selective reduction denitration device and technique that the present invention designs, belong to technical field of waste gas treatment.Including the first heat storage tank group described in the first heat storage tank group, the second heat storage tank group, unicom and the burner hearth of the second heat storage tank group and SCR reactors, the first heat storage tank group and the second heat storage tank group include at least two heat storage tanks respectively, and at least three switching valves are provided on the connecting line between the heat storage tank.The equipment and related process, which take full advantage of RTO technologies, the combination of two kinds of technologies of SCR or RTO technologies, the combination of tri- kinds of technologies of SCR, SNCR, reduces cost of investment, is conducive to energy efficiency, improves denitration efficiency, and can remove the VOCs in removing exhaust gas simultaneously.
Description
Technical field
The present invention relates to exhaust-gas treatment process field more particularly to a kind of heat accumulating type selective reduction denitration device and denitrations
Technique is combined the side of processing exhaust gas in particular to a kind of RTO waste gas pollution control and treatments means with selective reduction denitration device and technique
Method.
Background technology
Selective catalytic reduction (Selective Catalytic Reduction, SCR) refers in catalyst action
Under, nitrogen oxides is selectively reduced into nitrogen by reducing agent ammonia at 290 ~ 400 DEG C, and the oxygen of ammonia and oxygen hardly occurs
Change reaction, so as to improve the selectivity of nitrogen, reduce the consumption of ammonia.
Selective non-catalytic reduction（Selective non-catalytic reduction, SNCR）Refer to no catalyst
Under the action of, reducing agent is sprayed into 850 ~ 1100 DEG C of region, the nitrogen oxides in flue gas is reduced to harmless nitrogen and water,
Reaction of nitrogen oxides in reducing agent and flue gas, does not react generally with oxygen, which does not use catalyst, it is therefore necessary in height
Warm area is added into.
RTO (Regenerative Thermal Oxidizer, RTO) is a kind of efficient VOCs treatment equipment,
Principle is that organic exhaust gas is heated to 760 DEG C or more, makes the VOCs in exhaust gas（Volatile organic compounds, are waved
Hair property organic matter）In oxygenolysis into carbon dioxide and water, but it does not possess the ability of decomposition and processing nitrogen oxides.
The reaction temperature of both SNCR and SCR requirement is all higher, and since exhaust gas temperature is very high, it is chiefly used in
Steam generator system, but it is directed to occasion of the exhaust gas temperature of nitrogen-containing oxide for room temperature or lower temperature, it is necessary to it is heated, and
RTO just has the pyroreaction burner hearth for being suitble to SNCR, and with the middle-temperature section of suitable SCR, therefore they are effectively combined, it can
To play efficient process and energy saving advantage.
Existing RTO combination Ss CR technologies are two in RTO（It is or multiple）SCR region block has been loaded between heat storage tank respectively,
It is such the result is that wind direction always upper and lower switching, ammonia-gas spraying device be also interruption interaction operation, SCR region domain temperature not
Stablize, denitration effect is influenced, simultaneously as there are 2（It is or multiple）SCR region block, adds equipment investment.
Also have in medium temperature（290-400℃）The prior art for being combined SCR reactors with heat storage tank under environment such as authorizes
Notification number is that the Chinese utility model patent of CN 2757903Y discloses a kind of heat accumulating type SCR denitration and dioxin eliminating equipment,
It is connected two heat storage tanks by heating chamber, by changing waste gas stream always accumulation of heat/heat release exchange function, so as to
The energy is saved, but it goes back in addition to being limited with above-mentioned denitration effect and investing the defects of big since heating room temperature is relatively low
Function without VOCs in removing exhaust gas, the scope of application are small.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of group technology, can use RTO high-temperature regions and
Recuperation layer segmentation method sets SNCR blocks in hearth region, and a SCR region block is only set in heat storage tank, makes their organic knots
Altogether, ensure that denitration efficiency is stablized.
To achieve the above object, a kind of heat accumulating type selective reduction denitration device that the present invention designs, including the first accumulation of heat
Slot group, the second heat storage tank group, connection the first heat storage tank group and the burner hearth of the second heat storage tank group and SCR reactors,
The first heat storage tank group and the second heat storage tank group include at least two heat storage tanks respectively, the company between the heat storage tank
It takes over road and is provided at least three switching valves, the switching valve is circulated by converting exhaust gas in following two lines road：
Exhaust gas is flowed into from the first heat storage tank group, by burner hearth, into the second heat storage tank group after flow out, wherein the SCR is anti-
Device is answered to be located in the glide path of the second heat storage tank group or, another circuit, exhaust gas is from the second heat storage tank group stream
Enter, by burner hearth, into the first heat storage tank group after flow out, wherein the SCR reactors are located at the first heat storage tank group
Glide path on.
The switching valve can be four-way rotary valve or play double stop valves of similar effect.
As the preferred of above-mentioned technical proposal, SNCR reducing agent spray equipments are provided in the burner hearth.
As the preferred of above-mentioned technical proposal, it is provided with SCR reducing agents spray equipment in the SCR reactors and SCR is urged
Change medium.
As the preferred of above-mentioned technical proposal, SCR catalysis media are provided in the SCR reactors, are reduced not comprising SCR
Agent spray equipment.
The medium temperature section that the high temperature of SNCR needs and SCR need is solved, is made simultaneously using SNCR facilities in burner hearth simultaneously
It is that heat storage tank can play with handoff technique SCR region block to be made to keep the wind direction of stabilization and temperature, another benefit so set
Certain mixed effect in addition in the case where denitration rate is of less demanding, may be employed and only arrange a set of injection in SNCR regions
Module, SCR region domain carry out catalytic reaction using SNCR regions end reacting ammonia, reduce investment outlay.
As the preferred of above-mentioned technical proposal, there are two the first heat storage tank group and the second heat storage tank group are respectively provided with
Heat storage tank, the quantity of the switching valve is three；Two circulation circuits of exhaust gas are respectively at this time：Exhaust gas is from first accumulation of heat
Slot group flows into, by burner hearth, into the second heat storage tank group after flow out, stored wherein the SCR reactors are located at described second
Between the glide path of two heat storage tanks of heat channel group or, another circuit, exhaust gas are flowed into from the second heat storage tank group, are passed through
Burner hearth, into the first heat storage tank group after flow out, wherein the SCR reactors are located at described first heat storage tank group, two accumulation of heats
Between the glide path of slot.
As the preferred of above-mentioned technical proposal, ceramic heat storage body is filled in the heat storage tank.
As the preferred of above-mentioned technical proposal, the SCR catalysis medium is board-like, cellular or corrugated plate dst.
Exhaust gas is cycled into the heat storage tank group of the first heat storage tank group/second after absorbing heat in heat storage tank by switching valve
Another heat storage tank is switched into, is absorbed successively after heat into burner hearth, 850 DEG C or so are warming up in hearth region, while with
The SNCR reducing agent spray equipments being arranged in burner hearth（Spray ammonia, urea or amino acid）The reduzate of ejection is reacted, and is made
Big portion's nitrogen oxides is reduced to nitrogen herein, and then exhaust gas is returned into the heat storage tank group of the second heat storage tank group/first by heat storage tank
A part of heat is received, temperature is down to 350 DEG C or so, and into SCR reactors, remaining nitrogen oxides is gone back with remaining in this region
Catalytic reaction occurs for the original, decomposes most nitrogen oxides, so as to ensure tail gas qualified discharge, is come out from SCR reactors
Gas be discharged into chimney after the further recycling heat of the heat storage tank of hypomere.
A kind of heat accumulating type selective reduces denitrating technique, includes the following steps：
1. being passed through exhaust gas to the first heat storage tank group, switching valve is adjusted so that exhaust gas passes sequentially through the first heat storage tank group-burner hearth-the
It is flowed out after two heat storage tank groups, SCR reactors are located in the glide path of the second heat storage tank group at this time；
2. being passed through exhaust gas to the second heat storage tank group, switching valve is adjusted so that exhaust gas passes sequentially through the second heat storage tank group-burner hearth-the
It is flowed out after one heat storage tank group, SCR reactors are located in the glide path of the first heat storage tank group at this time；
3. repeat step 1. ~ 2..
As the preferred of above-mentioned technical proposal, the heating temperature in the burner hearth is 850 ~ 1150 DEG C.
As the preferred of above-mentioned technical proposal, the temperature when exhaust gas enters the SCR reactors is 290 ~ 400 DEG C.
Compared with prior art, the present invention haing the following advantages and advantageous effect：
（1）Heat accumulating type selective reduction denitration device and denitrating technique of the present invention take full advantage of RTO technologies, SCR two
The combination of kind technology or RTO technologies, the combination of tri- kinds of technologies of SCR, SNCR reduce cost of investment, are conducive to energy efficiency；
（2）Heat accumulating type selective reduction denitration device and denitrating technique of the present invention dexterously ensure that using switching valve
The gas temperature of the gas flow of SCR reactors remains stable, is not necessarily interrupted the spray of reducing agent, is conducive to improve de-
Nitre efficiency ensure that the stability of denitration effect；
（3）Heat accumulating type selective reduction denitration device and denitrating technique of the present invention only with a SCR reactor and are worked as
When SNCR reducing agent spray equipments are provided in burner hearth, it can also cancel the spray equipment of SCR reactors, cost is greatly saved；
（4）The nitrogen oxide removal efficiency of heat accumulating type selective reduction denitration device and denitrating technique of the present invention is up to 98%
More than, and the VOCs in removing exhaust gas can be removed simultaneously.
Description of the drawings
Fig. 1 be exhaust gas described in 1 ~ embodiment of embodiment 3 from the first heat storage tank flows into when device structure and fluid flow to show
It is intended to.
Fig. 2 be converted Vavle switching described in 1 ~ embodiment of embodiment 3 after exhaust gas from the second heat storage tank flow into when equipment knot
Structure and fluid flow to schematic diagram.
Fig. 3 be exhaust gas described in embodiment 4 from the first heat storage tank flow into when device structure and fluid flow to schematic diagram, wherein
For the diagram of triple valve using unfilled triangle as part is opened, the triangle of filling is closing part.
Fig. 4 be embodiment 4 described in after threeway Vavle switching exhaust gas from the second heat storage tank flow into when device structure and fluid
Schematic diagram is flowed to, wherein for the diagram of triple valve using unfilled triangle as part is opened, the triangle of filling is closing
Part.
Fig. 5 be exhaust gas described in embodiment 5 from the first heat storage tank flow into when device structure and fluid flow to schematic diagram, wherein
For the diagram of two-way valve using unfilled triangle as part is opened, the triangle of filling is closing part.
Fig. 6 be embodiment 5 described in after two-way valve switches exhaust gas from the second heat storage tank flow into when device structure and fluid
Schematic diagram is flowed to, wherein for the diagram of two-way valve using unfilled triangle as part is opened, the triangle of filling is closing
Part.
In figure：First heat storage tank group 1, the second heat storage tank group 2, burner hearth 3, SNCR reducing agents spray equipment 31, SCR reactors
4th, SCR reducing agents spray equipment 41, SCR catalysis medium 42, switching valve 5.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments, and following embodiments are to include two
It illustrates, does not limit the invention exemplified by the heat storage tank group of a heat storage tank, it is more the present disclosure applies equally to include
The heat storage tank group of a heat storage tank：
Wherein 1 ~ embodiment of embodiment 3 is the specific example of three switching valves, and the switching valve of embodiment 4 and embodiment 5 is respectively
Triple valve and two-way valve, and quantity is respectively six and ten.
Embodiment 1：With reference to figure 1 and Fig. 2, a kind of heat accumulating type selective reduces denitration device, including the first heat storage tank group 1,
The burner hearth 3 and SCR reactors 4 of first heat storage tank group 1 described in second heat storage tank group 2, unicom and the second heat storage tank group 2,
The first heat storage tank group 1 and the second heat storage tank group 2 are included respectively there are two heat storage tank, and the heat storage tank is interior to be filled with pottery
Porcelain heat storage, sets that there are three switching valves 5 on the connecting line between the heat storage tank；It is provided in the SCR reactors 4
SCR reducing agents spray equipment 41 and SCR catalysis media 42, the SCR catalysis media 42 are board-like.
Positive air inlet：
Exhaust gas is heated for the first time by the heat storage tank that a switching valve 5 is accessed in the first heat storage tank group 1, obtained hot gas
It is accessed successively through other two switching valve 5 after another heat storage tank in the first heat storage tank group 1 further heats and enters burner hearth 3,
Hot gas is heated to 850 DEG C or more in burner hearth 3, carries out oxygenolysis.High-temperature gas after reaction enters the second heat storage tank group 2
350 DEG C or so are cooled in one heat storage tank, enters through a switching valve 5 in SCR reactors 4 and carries out denitration, it is useless after denitration
Gas is cooled to room temperature in another heat storage tank using the second heat storage tank group 2, then through a switching valve 5, is connected to floss hole row
It puts.
Reversed air inlet：
Exhaust gas is heated for the first time by the heat storage tank that a switching valve 5 is accessed in the second heat storage tank group 2, obtained hot gas
It is accessed successively through other two switching valve 5 after another heat storage tank in the second heat storage tank group 2 further heats and enters burner hearth 3,
Hot gas is heated to 850 DEG C or more in burner hearth 3, carries out oxygenolysis.High-temperature gas after reaction enters the first heat storage tank group 1
350 DEG C or so are cooled in one heat storage tank, enters through a switching valve 5 in SCR reactors 4 and carries out denitration, it is useless after denitration
Gas is cooled to room temperature in another heat storage tank using the first heat storage tank group 1, then through a switching valve 5, is connected to floss hole row
It puts.
During positive air inlet, the heat of heat storage tank in the first heat storage tank group 1 of waste gas absorption is the second heat storage tank group
Heat storage tank in 2 stores heat.During reversed air inlet, the heat of heat storage tank in the second heat storage tank group 2 of waste gas absorption,
Heat is stored for the heat storage tank in the first heat storage tank group 1.The switching system being made up of switching valve and controller, storage heater
Accumulation of heat, heat release can be replaced, take full advantage of the heat in system.Moreover, keep SCR reactors in gas flow it is constant always,
Temperature stabilization can improve denitration efficiency.
Embodiment 2：With reference to figure 1 and Fig. 2, with embodiment 1 the difference is that：SNCR is provided in the burner hearth 3 also
Former agent spray equipment 31, the SCR catalysis media 42 are honeycomb fashion.
Embodiment 3：With reference to figure 1 and Fig. 2, with embodiment 2 the difference is that：Ripple is provided in the SCR reactors 4
The SCR catalysis media 42 of line formula, not comprising SCR reducing agents spray equipment 41.
Embodiment 4：With reference to figure 3 and Fig. 4, with embodiment 1 the difference is that：The switching valve 5 is triple valve, is counted
It measures as six.
Embodiment 5：With reference to figure 5 and Fig. 6, with embodiment 3 the difference is that：The switching valve 5 is two-way valve, is counted
It measures as ten.
Embodiment 6：With reference to 1 ~ Fig. 6 of figure, a kind of heat accumulating type selective reduces denitrating technique, includes the following steps：
1. being passed through exhaust gas to the first heat storage tank group 1, switching valve 5 is adjusted so that exhaust gas passes sequentially through the first heat storage tank group 1- burner hearths
It is flowed out after the second heat storage tanks of 3- group 2, SCR reactors 4 are located in the glide path of the second heat storage tank group 2 at this time；
2. being passed through exhaust gas to the second heat storage tank group 2, switching valve 5 is adjusted so that exhaust gas passes sequentially through the second heat storage tank group 2- burner hearths
It is flowed out after the first heat storage tanks of 3- group 1, SCR reactors 4 are located in the glide path of the first heat storage tank group 1 at this time；
1., 2. the heating temperature of middle burner hearth is 850-1000 DEG C to step, and temperature when exhaust gas enters the SCR reactors 4 is
290-330℃。
3. repeat step 1. ~ 2..
Embodiment 7：With reference to 1 ~ Fig. 6 of figure, a kind of heat accumulating type selective reduces denitrating technique, includes the following steps：
1. being passed through exhaust gas to the first heat storage tank group 1, switching valve 5 is adjusted so that exhaust gas passes sequentially through the first heat storage tank group 1- burner hearths
It is flowed out after the second heat storage tanks of 3- group 2, SCR reactors 4 are located in the glide path of the second heat storage tank group 2 at this time；
2. being passed through exhaust gas to the second heat storage tank group 2, switching valve 5 is adjusted so that exhaust gas passes sequentially through the second heat storage tank group 2- burner hearths
It is flowed out after the first heat storage tanks of 3- group 1, SCR reactors 4 are located in the glide path of the first heat storage tank group 1 at this time；
1., 2. the heating temperature of middle burner hearth is 950-1150 DEG C to step, and temperature when exhaust gas enters the SCR reactors 4 is
320-400℃。
3. repeat step 1. ~ 2..
Claims (10)
1. a kind of heat accumulating type selective reduces denitration device, it is characterised in that：Including the first heat storage tank group（1）, the second heat storage tank
Group（2）, connection the first heat storage tank group（1）With the second heat storage tank group（2）Burner hearth（3）And SCR reactors（4）,
The first heat storage tank group（1）With the second heat storage tank group（2）Include at least two heat storage tanks respectively, the heat storage tank it
Between connecting line on be provided at least three switching valves（5）, the switching valve（5）By converting exhaust gas at following two
It circulates in circuit：Exhaust gas is from the first heat storage tank group（1）It flows into, by burner hearth（3）, into the second heat storage tank group（2）
After flow out, wherein the SCR reactors（4）Positioned at the second heat storage tank group（2）Glide path on or, another circuit,
Exhaust gas is from the second heat storage tank group（2）It flows into, by burner hearth（3）, into the first heat storage tank group（1）After flow out, wherein
The SCR reactors（4）Positioned at the first heat storage tank group（1）Glide path on.
2. a kind of heat accumulating type selective reduction denitration device according to claim 1, it is characterised in that：The burner hearth（3）It is interior
It is provided with SNCR reducing agent spray equipments（31）.
3. a kind of heat accumulating type selective reduction denitration device according to claim 1, it is characterised in that：The SCR reactors
（4）Inside it is provided with SCR reducing agent spray equipments（41）Medium is catalyzed with SCR（42）.
4. a kind of heat accumulating type selective reduction denitration device according to claim 2, it is characterised in that：The SCR reactors
（4）Inside it is provided with SCR catalysis media（42）, not comprising SCR reducing agent spray equipments（41）.
5. a kind of heat accumulating type selective reduction denitration device according to claim 1, it is characterised in that：First heat storage tank
Group（1）With the second heat storage tank group（2）Heat storage tank there are two being respectively provided with, the switching valve（5）Quantity be three；It gives up at this time
Two of gas circulation circuits are respectively：Exhaust gas is from the first heat storage tank group（1）It flows into, by burner hearth（3）, into described second
Heat storage tank group（2）After flow out, wherein the SCR reactors（4）Positioned at the second heat storage tank group（2）The flowing of two heat storage tanks
Between route or, another circuit, exhaust gas is from the second heat storage tank group（2）It flows into, by burner hearth（3）, into described first
Heat storage tank group（1）After flow out, wherein the SCR reactors（4）Positioned at the first heat storage tank group（1）The flowing of two heat storage tanks
Between route.
6. a kind of heat accumulating type selective reduction denitration device according to any bar in claim 1-5, it is characterised in that：It is described
Ceramic heat storage body is filled in heat storage tank.
7. a kind of heat accumulating type selective reduction denitration device according to any bar in claim 3 or 4, it is characterised in that：Institute
State SCR catalysis media（42）For board-like, cellular or corrugated plate dst.
8. a kind of heat accumulating type selective of the heat accumulating type selective reduction denitration device in usage right requirement 1-7 described in any bar
Reduce denitrating technique, which is characterized in that include the following steps：
1. to the first heat storage tank group（1）Exhaust gas is passed through, adjusts switching valve（5）So that exhaust gas passes sequentially through the first heat storage tank group
（1）- burner hearth（3）- the second heat storage tank group（2）After flow out, SCR reactors at this time（4）Positioned at the second heat storage tank group（2）Stream
On dynamic route；
2. to the second heat storage tank group（2）Exhaust gas is passed through, adjusts switching valve（5）So that exhaust gas passes sequentially through the second heat storage tank group
（2）- burner hearth（3）- the first heat storage tank group（1）After flow out, SCR reactors at this time（4）Positioned at the first heat storage tank group（1）Stream
On dynamic route；
3. repeat step 1. ~ 2..
9. a kind of heat accumulating type selective reduction denitrating technique according to claim 8, it is characterised in that：The burner hearth（3）It is interior
Heating temperature be 850 ~ 1150 DEG C.
10. a kind of heat accumulating type selective reduction denitrating technique according to claim 8, it is characterised in that：The exhaust gas enters
The SCR reactors（4）When temperature be 290 ~ 400 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111842457A (en) * | 2020-06-24 | 2020-10-30 | 永清环保股份有限公司 | Ectopic thermal desorption method and device for oil sludge or organic contaminated soil |
| CN112370962A (en) * | 2020-10-16 | 2021-02-19 | 山东德曦环境科技有限公司 | SNCR or SCR denitration and VOCs collaborative pyrolysis treatment device and process |
| CN112774432A (en) * | 2020-12-30 | 2021-05-11 | 阳新鹏富矿业有限公司 | Heat exchange system and process for SCR-RTO outlet flue gas |
| CN115253634A (en) * | 2022-08-12 | 2022-11-01 | 山东建筑大学 | Flue gas reduction denitration device and method coupling SNCR and SCR |
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