CN207334762U - Denitrating technique system - Google Patents
Denitrating technique system Download PDFInfo
- Publication number
- CN207334762U CN207334762U CN201720469705.7U CN201720469705U CN207334762U CN 207334762 U CN207334762 U CN 207334762U CN 201720469705 U CN201720469705 U CN 201720469705U CN 207334762 U CN207334762 U CN 207334762U
- Authority
- CN
- China
- Prior art keywords
- denitrating technique
- outlet
- technique system
- pipe
- smoke discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a kind of denitrating technique system, it includes：Boiler furnace, reactor assembly and pipe-line system；The pipe-line system includes heat exchange pipeline and burner hearth smoke discharge tube road, the heat exchange pipeline is equipped with inlet tube, the heat exchanger tube and outlet of connection inlet tube that air feed enters, the heat exchanger tube is located in boiler furnace, inlet tube and outlet are respectively extended from the outside of boiler furnace, which is connected to reactor assembly；Above-mentioned burner hearth smoke discharge tube road one end connects above-mentioned boiler furnace, and the other end connects the reactor assembly；The denitrating technique system further comprises there is the quenching system for being connected to outlet, which is equipped with regulating valve, and temperature adjustment is carried out to being passed through the in-house high-temperature gas of pyrolysis with the amount adjusted into outlet cold wind.Compared with the prior art, be conducive to improve and adjust powder dust precipitation blocking pipeline and can easily be accommodated temperature, keep flue gas denitrification system long period to be in steady-working state, reduce consumption.
Description
【Technical field】
It the utility model is related to a kind of denitrating technique system of coal-burning power plant, more particularly to a kind of out of stock denitration work
Process system.
【Background technology】
Nitrogen oxides (NOx) in coal-fired plant flue gas is one of main atmosphere pollution, at present main application selection
Property catalytic reduction technique (SCR) administer flue gas in nitrogen oxides discharge, i.e., using reducing agent selectively with flue gas
Reaction of nitrogen oxides, and generate nontoxic and pollution-free nitrogen (N2) and water (H2O), denitration environmental protection is achieveed the purpose that.Denitrating system
Common reducing agent has liquefied ammonia, ammonium hydroxide and a urea liquid, selects urea to be used as reducing agent, with it is safe, derive from a wealth of sources, easily
In the transport and storage the features such as, it is widely used in field of environment protection, its action principle is that urea liquid is passed through pyrolysis
Device is pyrolyzed into ammonia, is sent into SCR reactors, then chemical reduction reaction occurs, and realizes the purpose of denitration environmental protection.
Refer in Chinese utility model patent disclosed in 11 days Mays in 2016 the 201520986907.xth, it is disclosed
A kind of flue-gas denitration process system, it includes boiler, pyrolysis oven, SCR reactors, and flue connects boiler and pyrolysis oven
It is connected together, high-temperature flue gas is introduced directly out of boiler by flue in pyrolysis oven, since boiler smoke dust is higher,
Requirement to pyrolysis oven is very high, and to prevent the systems such as pyrolysis oven by dust blocking, it is necessary to irregularly clear up it, from
And manual maintenance cost is added, and influence the use of denitrating technique system.
Those skilled in the art may consider heat exchanger being substituted for the above-mentioned technology for being introduced directly into high-temperature flue gas, but lead to
The gas temperature crossed after heat exchanger technology heat exchange is difficult to control, and is influenced whether follow-up pyrolysis and reaction effect, can not be realized
Sufficient denitration effect；Simple method can be connected the inlet tube of heat exchanger tube to adjust outlet with outlet by another pipeline
The gas temperature of pipe, since inlet tube and another pipeline for reconciling temperature of the gas converting heat are to connect same conveyance conduit to convey
Gas, is thus a value by the gas flow of the conveyance conduit, so operating personnel are difficult balance control inlet tube and tune
The gas distribution amount of another pipeline of temperature between the two is solved to control outlet to enter the gas temperature of pyrolysis system.
Thus, it is desirable to a kind of creative technique of design is simple, reduced investment, operating cost is low, service life is long, maintenance
Few denitrating technique system meets the market requirement.
【Utility model content】
In order to solve the above technical problems, the utility model provides a kind of reduction powder dust and is easy to the denitrating technique system of temperature adjustment
System.
The utility model is to be achieved through the following technical solutions：A kind of denitrating technique system, it includes：It is boiler furnace, anti-
Answer device system and pipe-line system；The pipe-line system includes heat exchange pipeline and burner hearth smoke discharge tube road, the heat exchange pipeline are equipped with
The inlet tube of supplied gas entrance, the heat exchanger tube and outlet for connecting inlet tube, the heat exchanger tube are located in boiler furnace, inlet tube
And outlet is respectively extended from the outside of boiler furnace, which is connected to reactor assembly；Above-mentioned burner hearth smoke discharge tube road
One end connects above-mentioned boiler furnace, and the other end connects the reactor assembly；The denitrating technique system further comprises having solely
The quenching system put and be connected on outlet is erected, which is equipped with regulating valve, to adjust into outlet cold wind
Amount carries out temperature adjustment to being passed through the in-house high-temperature gas of pyrolysis.
Further improvement project has：The denitrating technique system further comprises once wind system, the primary air system
With the air duct for being respectively connected to inlet tube and boiler furnace.
Further improvement project has：The denitrating technique system further comprises the deduster for connecting the outlet, should
Deduster is equipped with ash discharge dirt mouth.
Further improvement project has：The denitrating technique system further comprises there is air preheater, and pipe-line system has
Dust discharge pipeline and smoke discharge tube road, described dust discharge pipeline one end connect the ash discharge dirt mouth of the deduster, and the other end is connected to cigarette
Gas discharge line, smoke discharge tube road connection air preheater and reactor assembly.
Further improvement project has：The reactor assembly includes pyrolysis mechanism and SCR reactors, the pipe-line system bag
Include connection pyrolysis mechanism and the wind pipe of SCR reactors, the above-mentioned outlet of pyrolysis mechanism connection, burner hearth smoke discharge tube road
It is connected to SCR reactors.
Further improvement project has：The reactor assembly includes pyrolysis mechanism and SCR reactors, the pipe-line system tool
There is wind pipe, wind pipe one end connection pyrolysis mechanism, the other end is connected in burner hearth smoke discharge tube road, the pyrolysis machine
Structure connects above-mentioned outlet, and burner hearth smoke discharge tube road is connected to SCR reactors.
Further improvement project has：The denitrating technique system further comprises being connected to the exhausting supercharging on wind pipe
Mechanism.
Further improvement project has：The denitrating technique system further comprises being connected to the exhausting supercharging on wind pipe
Mechanism.
Further improvement project has：The denitrating technique system further comprises there is air preheater, and above-mentioned air duct connects
The air preheater is connected to, the pipe-line system has the smoke discharge tube road of connection air preheater and reactor assembly.
Further improvement project has：The denitrating technique system further comprises there is air valve, which is connected to outlet.
The beneficial effects of the utility model are as follows：It is put into by using heat exchanger tube in boiler furnace and carries out recuperated gas, and
Outlet is equipped with to the quenching system for adjusting temperature, can be to transport reactor system with the amount adjusted into the cold wind of outlet
Interior high-temperature gas carries out temperature adjustment, and compared with the prior art, the quenching system being separately provided, which is conducive to improve, adjusts the blocking of powder dust
Pipeline and temperature is can easily be accommodated, keep flue gas denitrification system long period to be in steady-working state, and reduce consumption.
【Brief description of the drawings】
Fig. 1 is the schematic diagram of the utility model denitrating technique system embodiment.
【Embodiment】
As shown in Figure 1, a kind of denitrating technique system embodiment being related to for utility model, it include boiler furnace 1,
Reactor assembly, deduster 4, exhausting booster body 5, air preheater 6, multiple valves 71, quenching system 8 and pipe-line system；
The boiler furnace 1 is the equipment for generating high-temperature flue gas.
The pipe-line system includes heat exchange pipeline 91, burner hearth smoke discharge tube road 92, dust discharge pipeline 96, smoke discharge tube road
97 and wind pipe 98；The heat exchange pipeline 91 is equipped with the inlet tube 93 of supplied gas entrance, connects the heat exchanger tube 94 of inlet tube and go out
Mouth pipe 95, the heat exchanger tube are located in boiler furnace, and inlet tube 93 and outlet 95 respectively extend from the outside of boiler furnace 1, should
Outlet is connected to reactor assembly；Above-mentioned 92 one end of burner hearth smoke discharge tube road connects above-mentioned boiler furnace 1, other end connection
The reactor assembly；The burner hearth smoke discharge tube road 92 is the bottom for being connected to boiler furnace, or is interpreted as burner hearth pipeline
11 lower end of economizer in 92 connection boiler furnace smoke discharge tube roads, by boiler combustion flue gas send in above-mentioned reactor assembly into
Row denitration process, is attached in SCR reactors in present embodiment, is detailed later.Above-mentioned heat exchanger tube 94 is located at above-mentioned boiler
At the upper end of burner hearth 1, or it is interpreted as heat exchange pipeline 91 and connects temperature at boiler furnace that more than 450 degree of region can be up to, by
This, the gas after the boiler furnace 1 heat exchange, which is transported in the reactor assembly, directly occurs pyrolytic reaction.
In present embodiment, the reactor assembly includes pyrolysis mechanism 2 and SCR reactors 3, above-mentioned wind pipe 98 connect
Logical pyrolysis mechanism 2 and SCR reactors 3, the above-mentioned outlet 95 of the pyrolysis mechanism connection, burner hearth smoke discharge tube road 92 is connected to
SCR reactors 3.
Above-mentioned deduster 4 is connected to outlet 95, and described 96 one end of dust discharge pipeline connects the dust-exhausting port of the deduster 4,
The other end is connected to smoke discharge tube road 97, and the gas of First air is first done except dust processing, prevents the dust in First air
Pipeline or system subsequent process equipment are blocked, while also reduces dust and enters pyrolysis mechanism 2, prevents from blocking, and in dust discharge pipeline
96 are equipped with the valve 71 of neighbouring 4 lower end of deduster, facilitate the maintenance of system.
The denitrating technique system further comprises once wind system 61, the primary air system include be respectively connected into
The air duct 62 of mouth pipe 93 and boiler furnace 1, the air duct 62 are connected to above-mentioned air preheater 6, above-mentioned smoke discharge tube road
97 connection air preheaters 6 and SCR reactors 3.The usual primary air system can with transporting cold wind, also can heat air delivery, such as exist
In the case that the temperature of air preheater is higher, it can realize heat transfer effect by the gas of the air preheater 6, lift air duct
Gas temperature in 62；Alternatively, in the case that boiler hearth temperature is not high, also can direct heating wind.
In the present embodiment, the quenching system 8 is independently arranged and is connected on outlet 95, passes through adjusting switch
81, in-house high-temperature gas progress temperature adjustment can be pyrolyzed to conveying with the amount adjusted into the cold wind of outlet (can usually reconcile
Temperature control is 450 DEG C to 600 DEG C), prevent the gas transport of excessive temperature to being pyrolyzed in mechanism 2.I.e. described quenching system 8 can
With between the valve 71 and the deduster 4 or between deduster 4 and pyrolysis mechanism 2.The utility model passes through
It is put into using heat exchanger tube 91 in boiler furnace 1 and carries out recuperated gas, and outlet 95 is equipped with to the quenching system for adjusting temperature
8, temperature adjustment can be carried out to the high-temperature gas in transport reactor system with the amount adjusted into the cold wind of outlet 95, it is relatively existing
There is technology, which, which is conducive to improve, adjusts powder dust blocking pipeline and can easily be accommodated temperature, keeps cigarette
Gas denitrating system long period is in steady-working state, and reduces consumption.
The wind pipe 98 is connected between the pyrolysis mechanism 2 and the SCR reactors 3, and the exhausting is pressurized
Mechanism 5 is connected between pyrolysis mechanism 2 and SCR reactors 3, i.e., the exhausting booster body 5 is connected on wind pipe 98, so that
The high-temperature gas pressure extracted from pyrolysis mechanism 2 is more than the pressure in SCR reactors 3, the high-temperature gas component after pyrolysis
High temperature pyrolysis gas containing 5% or so ammonia.Compared with the prior art, exhausting booster body 5 is arranged on pyrolysis by the utility model
The lower end of mechanism 2, is conducive to improve the excessive defect of temperature of exhausting booster body, influences the service life of system, and in outlet air
Pipeline 98 is equipped with valve 71, facilitates the maintenance of system.
In the present embodiment, the exhausting booster body 5 is jet pump, which is equipped with wind pipe 98
Nozzles with injector and connection wind pipe 98 on gas access, the entrance of nozzles with injector is connected with injection source of the gas, injection source of the gas
Pressure higher than the high-temperature gas pressure in wind pipe, the gas of injection source of the gas forms high-speed flow spray after flowing through nozzles with injector
Go out, injection pressurization is played to high-temperature gas, so that the high-temperature gas after through being pyrolyzed mechanism 2 smoothly flows to SCR reactions
Device 3.The jet pump 5 is simple and reliable for structure, the high temperature that can be reliably resistant to for a long time between 320 DEG C~400 DEG C.
Above-mentioned smoke discharge tube road 97 connects air preheater 6 with SCR reactors 3, and the air duct 62 is by the sky
Air preheater 6 is connected to the bottom of boiler furnace 1, has to boiler furnace oxygenation, combustion-supporting and other effects, the air preheater 6
Downside is equipped with introduction pipe 99, which has been sequentially communicated except dust mechanism 63, desulfurizing tower 64 and chimney 65, to pass through
The flue gas of SCR reactors passes through except dust, desulfurization process, final qualified discharge, prevents pollution environment.
Certainly, above-mentioned wind pipe 98 also may be connected directly on burner hearth smoke discharge tube road 92, by the gas after pyrolysis
It is sufficiently mixed with the high-temperature flue gas in burner hearth smoke discharge tube road 92 and is uniformly transported to again in SCR reactors, it is fully anti-to carry out
Should, lower loss and prevent not sufficiently reactive pernicious gas from entering in air, that is, be pyrolyzed the above-mentioned outlet of mechanism connection, burner hearth
Smoke discharge tube road 92 is connected to SCR reactors, and wind pipe one end connection pyrolysis mechanism, the other end is connected to burner hearth flue gas
In discharge line.
Claims (10)
1. a kind of denitrating technique system, it includes：Boiler furnace (1), reactor assembly and pipe-line system；It is characterized in that：Institute
Stating pipe-line system includes heat exchange pipeline (91) and burner hearth smoke discharge tube road (92), which enters equipped with supplied gas
Inlet tube (93), connect the heat exchanger tube (94) and outlet (95) of inlet tube, the heat exchanger tube is located in boiler furnace, entrance
Pipe (93) and outlet (95) are respectively extended from the outside of boiler furnace (1), which is connected to reactor assembly；Above-mentioned burner hearth
Smoke discharge tube road (92) one end connects above-mentioned boiler furnace (1), and the other end connects the reactor assembly；The denitrating technique
System further comprises there is the quenching system (8) being independently arranged and be connected on outlet (95), which, which is equipped with, is adjusted
Valve (81), temperature adjustment is carried out with the amount adjusted into outlet (95) cold wind to being passed through the in-house high-temperature gas of pyrolysis.
2. denitrating technique system as claimed in claim 1, it is characterised in that：The denitrating technique system further comprises thering is one
Secondary wind system (61), the primary air system have the air duct (62) for being respectively connected to inlet tube (93) and boiler furnace (1).
3. denitrating technique system as claimed in claim 1, it is characterised in that：The denitrating technique system further comprises connecting
The deduster (4) of the outlet (95), the deduster are equipped with ash discharge dirt mouth.
4. denitrating technique system as claimed in claim 3, it is characterised in that：The denitrating technique system further comprises having time
Air preheater (6), pipe-line system have dust discharge pipeline (96) and smoke discharge tube road (97), and dust discharge pipeline one end connection should
The ash discharge dirt mouth of deduster (4), the other end are connected to smoke discharge tube road, the smoke discharge tube road (97) connection air preheater
With reactor assembly.
5. denitrating technique system according to any one of claims 1 to 4, it is characterised in that：The reactor assembly includes
Mechanism (2) and SCR reactors (3) are pyrolyzed, the pipe-line system includes connection pyrolysis mechanism and the wind pipe of SCR reactors
(98), the above-mentioned outlet of pyrolysis mechanism connection, burner hearth smoke discharge tube road are connected to SCR reactors.
6. denitrating technique system according to any one of claims 1 to 4, it is characterised in that：The reactor assembly includes
Mechanism (2) and SCR reactors (3) are pyrolyzed, the pipe-line system has wind pipe (98), wind pipe one end connection pyrolysis
Mechanism, the other end are connected in burner hearth smoke discharge tube road, the above-mentioned outlet of pyrolysis mechanism connection, burner hearth smoke discharge tube road
It is connected to SCR reactors.
7. denitrating technique system as claimed in claim 5, it is characterised in that：The denitrating technique system further comprises connecting
Exhausting booster body (5) on wind pipe.
8. denitrating technique system as claimed in claim 6, it is characterised in that：The denitrating technique system further comprises connecting
Exhausting booster body (5) on wind pipe.
9. denitrating technique system as claimed in claim 2, it is characterised in that：The denitrating technique system further comprises having time
Air preheater (6), above-mentioned air duct (62) are connected to the air preheater, and the pipe-line system has connection air preheater
(6) with the smoke discharge tube road (97) of reactor assembly.
10. denitrating technique system as claimed in claim 1, it is characterised in that：The denitrating technique system further comprises having
Air valve (71), the air valve are connected to outlet (95).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720469705.7U CN207334762U (en) | 2017-04-28 | 2017-04-28 | Denitrating technique system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720469705.7U CN207334762U (en) | 2017-04-28 | 2017-04-28 | Denitrating technique system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207334762U true CN207334762U (en) | 2018-05-08 |
Family
ID=62376258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720469705.7U Active CN207334762U (en) | 2017-04-28 | 2017-04-28 | Denitrating technique system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207334762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170248A (en) * | 2019-02-02 | 2019-08-27 | 昆山市三维换热器有限公司 | Natural wind heats denitrating system |
-
2017
- 2017-04-28 CN CN201720469705.7U patent/CN207334762U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170248A (en) * | 2019-02-02 | 2019-08-27 | 昆山市三维换热器有限公司 | Natural wind heats denitrating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102179171B (en) | Multi-stage themolysis coupled denitration method using front flow field uniformizing device and device thereof | |
| CN204699575U (en) | The flue gas combined denitrating system of a kind of cement kiln SNCR-SCR | |
| CN107213771A (en) | The biomass direct-fired device that flue gas recirculation and SNCR are combined | |
| CN108905590A (en) | A kind of denitrating system and method for station boiler low NO collaboration high temperature spray ammonia | |
| CN203316010U (en) | Flue gas denitration system with SCR and SNCR coupled | |
| CN202527063U (en) | Combined type flue gas denitrification device based on urea solution or ammonia water | |
| CN207334762U (en) | Denitrating technique system | |
| CN106807193A (en) | A kind of flue-gas denitration process system | |
| CN205216547U (en) | Flue gas denitration process systems | |
| CN212523654U (en) | System for be used for independent heat source grinding system tail gas denitration | |
| CN211502750U (en) | Combustion device convenient for reducing NOx by directly spraying coal water slurry into low-oxygen flame | |
| CN206424766U (en) | A kind of wide load urea direct-injection pyrolysis smoke denitrating system of boiler | |
| CN207237700U (en) | Flue-gas denitration process system | |
| CN207786296U (en) | Denitration in Boiler system | |
| CN207237701U (en) | Flue gas denitrification system | |
| CN111686570A (en) | System and method for tail gas denitration of independent heat source grinding system | |
| CN207073831U (en) | Flue gas denitrification system | |
| CN111550772A (en) | SNCR (selective non-catalytic reduction) denitration system and method for pulverized coal industrial boiler | |
| CN208878272U (en) | A kind of denitrating system of station boiler low NO collaboration high temperature spray ammonia | |
| CN108731011A (en) | Flue gas denitrification system | |
| CN207430006U (en) | Denitration of boiler smoke equipment | |
| CN108970390A (en) | Flue gas denitrification system | |
| CN206130962U (en) | A SNCR and gas recirculation coupling deNOx systems for chain furnace | |
| CN205717280U (en) | Denitration of boiler smoke process system | |
| CN202087235U (en) | Multi-level thermolysis coupling denitrification device with pre-flow field equalizing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |