CN208449035U - A kind of SNCR denitration system - Google Patents
A kind of SNCR denitration system Download PDFInfo
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- CN208449035U CN208449035U CN201820904525.1U CN201820904525U CN208449035U CN 208449035 U CN208449035 U CN 208449035U CN 201820904525 U CN201820904525 U CN 201820904525U CN 208449035 U CN208449035 U CN 208449035U
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Abstract
The utility model discloses a kind of SNCR denitration systems, including middle control center, reducing agent filling unit, reducing agent storage element, reducing agent supply unit, dilution water supply unit, metering allocation unit, injection unit；The reducing agent filling unit, which enters reducing agent filling, is delivered to metering allocation unit by reducing agent supply unit after reducing agent storage element；Demineralized water solution is pumped to the metering allocation unit by the dilution water supply unit simultaneously；Distribution to the injection unit sprays into denitration reaction furnace chamber after the metering allocation unit quantifies reductant metering；Compared with prior art, have the advantage that automatic controlling level height, it is systemic strong, reducing agent filling and stocking system security performance are high, and desalination aqueous solution realizes dual use, effectively saving cleaning charge, improve pipeline maintenance efficiency, increase pipeline life, injection unit spray gun denitration efficiency is high, and injection coverage rate is high.
Description
Technical field
The utility model relates to denitration method for flue gas field more particularly to a kind of SNCR denitration systems.
Background technique
Nitrogen oxides includes multiple compounds, but main component is nitric oxide and nitrogen dioxide.Human activity discharge
Oxynitrides is mainly as caused by fuel combustion and chemical industry production, such as thermal power plant, chemical plant, steel mill
Etc. the mobile occurring source such as fixation occurring source and motor vehicle for having fuel combustion.In addition, industrial processes and resident living also can
Generate a small amount of oxynitrides.Oxynitrides not only has a very strong toxic action to human body and animals and plants, or formed acid rain,
The main reason for haze and photochemical fog, also participates in the destruction of ozone layer.Control and the pollution for administering nitrogen oxides are always
The research hotspot in International Environmental Protection field, current nitrogen oxides control method reported in the literature mainly selective catalytic reduction method,
Absorption method and absorption process etc..
Selective non-catalytic reduction SNCR system is the gas denitrifying technology after a kind of burning, by thermal power generation pot
Furnace, the appropriate location of refuse burner, cement kiln or other Industrial Boilers spray into suitable reducing agent to remove the chemistry of NOx
Reaction process.SNCR denitration equipment generally with the canned truck transport of certain density reducing agent, is stored in tank with liquid form
In, reducing agent is assigned to every spray gun by measuring distribution module, is sprayed into furnace by spray gun and carries out selective reaction with NOx, no
Different from SCR technique with catalyst, the fuel types such as coal, biomass and rubbish influence very little to SNCR performance.
Existing SNCR denitration system is poor in the presence of systematicness, and reducing agent filling intelligent control degree is low, and system is whole
Body plans poor disadvantage.
Utility model content
Purpose of utility model: In order to solve the problems of in the prior art, the utility model proposes a kind of SNCR
Denitrating system, denitration efficiency with higher and high denitration effect under the high temperature conditions, and environmental protection is practical.
Technical solution: to achieve these objectives, the utility model takes following technical scheme: a kind of SNCR denitration system, packet
Include middle control center, reducing agent filling unit, reducing agent storage element, reducing agent supply unit, dilution water supply unit, metering point
With unit, injection unit；The reducing agent filling unit enters reducing agent filling defeated by reducing agent after reducing agent storage element
Send unit transportation to measuring allocation unit；Demineralized water solution is pumped to the metering and distributed by the dilution water supply unit simultaneously
Unit；Distribution to the injection unit sprays into denitration reaction furnace chamber after the metering allocation unit quantifies reductant metering；
The reducing agent filling unit includes groove tank car and centrifugal pump；The reducing agent storage element include holding vessel,
Fluid level transmitter and tank deck liquid level spill-over leak protection set on holding vessel bottom sides switch；
The reducing agent supply unit is set near the holding vessel, including the first centrifugal multistage pump multiple centrifugal pump；
The dilution water supply unit includes desalination water store tank and the second centrifugal multistage pump multiple centrifugal pump；
The metering allocation unit include the soft water flux metering units being connect with the dilution water supply unit, with it is described
The reducing agent flow measurement cell of reducing agent supply unit connection；Metering is connected in turn after the reducing agent flow measurement cell
Distribute static mixer and spray distribution flow measurement cell；Soft water flux metering units rear end is set there are two pipeline,
It is connected to metering distribution static mixer all the way；Another way is connected to soft water cleaning injection pipe by-pass unit；
It include multiple atomizing lances with independent control unit in the injection unit.
More preferably, reducing agent storage element side is additionally provided with safety shower unit.
More preferably, groove tank car tank top gas returns at the top of groove tank car from tank top, forms closure filling.
More preferably, the soft water flux metering units, reducing agent flow measurement cell and spray distribution flowmeter
Amount unit respectively includes a flowmeter and a regulating valve.
More preferably, the holding vessel is prepared using 304 stainless steel materials, and design capacity meets 3 line 7 days
Maximum continuous condition storage.
More preferably, first centrifugal multistage pump multiple centrifugal pump and second centrifugal multistage pump multiple centrifugal pump are two stage centrifugal pump, wherein
Level-one is spare centrifugal pump.
More preferably, the independent control unit of the multiple atomizing lance include flow sensor, pressure gauge and
Injection cock.
Further, the atomizing lance is compressed air two-phase atomizing lance, and spray gun pipette tips use heat resistant and wear resistant
SS310 material stretches out water-cooling wall 50-100mm.
The utility model has the advantages that a kind of SNCR denitration system provided by the utility model has following excellent compared with prior art
Point: automatic controlling level is high, and systematicness is strong, and reducing agent filling and stocking system security performance are high, and desalination aqueous solution is realized double
At reuse, effectively saving cleaning charge, raising pipeline maintenance efficiency increase pipeline life, and injection unit spray gun denitration efficiency is high,
It is high to spray coverage rate.
Detailed description of the invention
Fig. 1 is specific embodiment of the present invention SNCR denitration system structural schematic diagram.
Specific embodiment
Embodiment 1:
The utility model discloses a kind of SNCR denitration systems, including middle control center, reducing agent filling unit 1, reducing agent
Storage element 2, reducing agent supply unit 3, dilution water supply unit 4, metering allocation unit 5, injection unit 6 and safety shower
Unit 7.
Denitrating system is divided into three tunnels: it is single that the first via is that reducing agent filling is entered reducing agent storage by reducing agent filling unit 1
Metering allocation unit 5 is delivered to by reducing agent supply unit 3 after member 2；
Second tunnel, which is dilution water supply unit 4, is pumped to the metering point for the demineralized water solution from live waste heat boiler
With unit 5；
The reducing agent that the first via and the second tunnel convey and the desalination aqueous solution as dilution water are in metering allocation unit 5
Distribution to injection unit 6 sprays into denitration reaction furnace chamber after metered amount；
The safety shower unit 7 that third road is mounted to 2 side of reducing agent storage element can will in case of emergency come from
The tap water of tap water pipe line is used as the desalinization of soil by flooding or leaching and spray reaches security control.
The middle control center carries out the job control of each unit by the way that IP65 control cabinet is arranged in each unit.
The reducing agent filling unit 1 includes groove tank car 11 and centrifugal pump 12；The reducing agent filling unit 1 works
When, the reducing agent in groove tank car 11 is sent into reducing agent storage element 2 by centrifugal pump 12；The 11 tank top gas of groove tank car from
Tank top returns to 11 top of groove tank car, forms closure filling.
The reducing agent storage element 2 include holding vessel 21, set on 21 bottom sides of holding vessel fluid level transmitter 22 with
And tank deck liquid level spill-over leak protection switch 23；Reducing agent enters in the holding vessel 21 of reducing agent storage element 2, is become by liquid level
It send device 22 and tank deck liquid level spill-over leak protection switch 23 to realize pump start-up and shut-down control interlocking, prevents spill-over；The holding vessel 21
It is prepared using 304 stainless steel materials, design capacity meets 3 lines, 7 days maximum continuous condition storages.
The reducing agent supply unit 3 is set near the holding vessel 21, including the first centrifugal multistage pump multiple centrifugal pump 31；The dilution
Water supply unit 4 includes desalination water store tank 41 and the second centrifugal multistage pump multiple centrifugal pump 42；The metering allocation unit 5 include with it is described
The soft water flux metering units 51 of the connection of dilution water supply unit 4, the reduction agent flux being connect with the reducing agent supply unit 3
Metering units 52；It is connected with metering distribution static mixer 53 and injection after the reducing agent flow measurement cell 52 in turn
Distribute flow measurement cell 54；51 rear end of soft water flux metering units is set there are two pipeline, is connected to metering distribution all the way
Static mixer 53；Another way is connected to soft water cleaning injection pipe by-pass unit 55；The soft water flux metering units 51 are gone back
Former agent flux metering units 52 and spray distribution flow measurement cell 54 respectively include a flowmeter and a regulating valve.Institute
Stating the first centrifugal multistage pump multiple centrifugal pump 31 and second centrifugal multistage pump multiple centrifugal pump 42 is two stage centrifugal pump, and wherein level-one is spare centrifugal pump.
Reducing agent is delivered to metering point from the first centrifugal multistage pump multiple centrifugal pump 31 passed through in reducing agent supply unit 3 in holding vessel 21
Metering distribution static mixer is delivered to after reducing agent flow measurement cell 52 carries out metering and flow is adjusted again with unit 5
53；The dilution water supply unit 4 is pumped the demineralized water solution in desalination water store tank 21 by the second centrifugal multistage pump multiple centrifugal pump 42
It is divided into two-way after to metering allocation unit 5, is delivered to after soft water flux metering units 51 carry out metering and flow is adjusted all the way
Output valve injection unit after being mixed with reducing agent in metering distribution static mixer 53 to required concentration；Middle control center is automatic
According to the initial NO of boilerXConcentration calculate simultaneously accurate measurement by making reducing agent and dilution water mixed on demand
System spurts into the reducing agent solution of burner hearth；Another way desalination aqueous solution enters soft water cleaning injection pipe by-pass unit 55 each
The cleaning of injection pipe bypass is carried out after reducing agent stop-spraying.
It include multiple atomizing lances with independent control unit in the injection unit 6；The multiple atomizing lance
Independent control unit include flow sensor, pressure gauge and injection cock；Injection cock control reduction agent flux, control
Atomization and compressed air；Each unit is equipped with a flow sensor and pressure gauge individually to monitor the reduction of each spray gun in real time
Agent situation.The atomizing lance is compressed air two-phase atomizing lance, and spray gun pipette tips use heat resistant and wear resistant SS310 material, stretch
Water-cooling wall 50-100mm out.
A kind of SNCR denitration system provided by the utility model has the advantage that automation control compared with prior art
Processing procedure degree is high, and systematicness is strong, and reducing agent filling and stocking system security performance are high, and desalination aqueous solution realizes dual use, effectively
Cleaning charge is saved, pipeline maintenance efficiency is improved, increases pipeline life, injection unit spray gun denitration efficiency is high, sprays coverage rate
It is high.
It should be pointed out that for those skilled in the art, before not departing from the utility model principle
It puts, can also make several improvements, these improvement also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of SNCR denitration system, it is characterised in that single including middle control center, reducing agent filling unit (1), reducing agent storage
First (2), reducing agent supply unit (3), dilution water supply unit (4), metering allocation unit (5), injection unit (6)；It is described to go back
Reducing agent filling is entered reducing agent storage element (2) and is delivered to meter by reducing agent supply unit (3) afterwards by former agent filling unit (1)
It measures allocation unit (5)；Demineralized water solution is pumped to the metering allocation unit (5) by the dilution water supply unit (4) simultaneously；
Distribution to the injection unit (6) spray into denitration reaction furnace chamber after the metering allocation unit (5) quantifies reductant metering；
The reducing agent filling unit (1) includes groove tank car (11) and centrifugal pump (12)；Reducing agent storage element (2) packet
Holding vessel (21), the fluid level transmitter (22) set on holding vessel (21) bottom sides and tank deck liquid level spill-over leak protection is included to open
It closes (23)；
The reducing agent supply unit (3) is set near the holding vessel (21), including the first centrifugal multistage pump multiple centrifugal pump (31)；
The dilution water supply unit (4) includes desalination water store tank (41) and the second centrifugal multistage pump multiple centrifugal pump (42)；
Metering allocation unit (5) include the soft water flux metering units (51) being connect with the dilution water supply unit (4),
The reducing agent flow measurement cell (52) being connect with the reducing agent supply unit (3)；The reducing agent flow measurement cell
(52) metering distribution static mixer (53) and spray distribution flow measurement cell (54) are connected with after in turn；The soft water stream
Amount metering units (51) rear end is set there are two pipeline, is connected to metering distribution static mixer (53) all the way；Another way is connected to
Soft water cleans injection pipe by-pass unit (55)；
It include multiple atomizing lances with independent control unit in the injection unit (6).
2. SNCR denitration system according to claim 1, it is characterised in that: reducing agent storage element (2) side is also
Equipped with safety shower unit (7).
3. SNCR denitration system according to claim 1, it is characterised in that: groove tank car (11) the tank top gas is from tank
Top returns at the top of groove tank car (11), forms closure filling.
4. SNCR denitration system according to claim 1, it is characterised in that: the soft water flux metering units (51) are gone back
Former agent flux metering units (52) and spray distribution flow measurement cell (54) respectively include a flowmeter and an adjusting
Valve.
5. SNCR denitration system according to claim 1, it is characterised in that: the holding vessel (21) uses 304 stainless steels
Material is prepared, and design capacity meets 3 lines, 7 days maximum continuous condition storages.
6. SNCR denitration system according to claim 1, it is characterised in that: first centrifugal multistage pump multiple centrifugal pump (31) and described
Second centrifugal multistage pump multiple centrifugal pump (42) is two stage centrifugal pump, and wherein level-one is spare centrifugal pump.
7. SNCR denitration system according to claim 1, it is characterised in that: the independent control of the multiple atomizing lance
Unit includes flow sensor, pressure gauge and injection cock.
8. SNCR denitration system according to claim 7, it is characterised in that: the atomizing lance is compressed air two-phase mist
Change spray gun, spray gun pipette tips use heat resistant and wear resistant SS310 material, stretch out water-cooling wall 50-100mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820904525.1U CN208449035U (en) | 2018-06-12 | 2018-06-12 | A kind of SNCR denitration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820904525.1U CN208449035U (en) | 2018-06-12 | 2018-06-12 | A kind of SNCR denitration system |
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| CN208449035U true CN208449035U (en) | 2019-02-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479362A (en) * | 2018-06-12 | 2018-09-04 | 江苏华本环境科技有限公司 | A kind of SNCR denitration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479362A (en) * | 2018-06-12 | 2018-09-04 | 江苏华本环境科技有限公司 | A kind of SNCR denitration system |
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