CN206853451U - A kind of oxidation and denitration device - Google Patents
A kind of oxidation and denitration device Download PDFInfo
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- CN206853451U CN206853451U CN201720622890.9U CN201720622890U CN206853451U CN 206853451 U CN206853451 U CN 206853451U CN 201720622890 U CN201720622890 U CN 201720622890U CN 206853451 U CN206853451 U CN 206853451U
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- oxidation
- denitration
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Abstract
The utility model provides a kind of oxidation and denitration device, including NaClO2NaClO solution transfer pumps, desalination water pump, oxidant prepare storehouse, oxidant delivery pump, oxidation and denitration tower and lime white liquid pump, spray gun one and spray gun two and are separately positioned on bottom and top in oxidation and denitration tower, and unloading valve is arranged on oxidation and denitration tower bottom, NaClO2NaClO delivery pumps and desalination water pump are connected by pipeline with the charging aperture one and charging aperture two in oxidant preparation storehouse respectively, the outlet that oxidant prepares storehouse is connected by pipeline with oxidant conveying pump intake, the outlet of oxidant delivery pump is connected with spray gun one, and the outlet of lime white liquid pump is connected by pipeline with spray gun two.Oxidation and denitration device described in the utility model, oxidation and denitration are coupled in an oxidation and denitration tower, simplify flow, easily operated, cost is low.
Description
Technical field
It the utility model is related to denitration applied technical field, more particularly to a kind of oxidation and denitration device.
Background technology
Gas denitrifying technology is a cigarette of the industrial circles such as electric power, cement, boiler applied to more NO_x formations
Gas purification techniques.Denitration technology mainly has at present：Low-NO_x combustion technology, SNCR technology SNCR, selectivity are urged
Change reduction technique SCR and oxidation and denitration technology.Oxidation and denitration technology before absorption tower more using strong oxidizer is sprayed into, in catalyst
In the presence of the NO for being not easy to absorb is oxidized to easily by the NOx of alkali liquor absorption, then in absorption tower, inhaled using alkali lye
Receive.Conventional strong oxidizer is ozone in the market, and the principle of ozone denitration is that ozone can will be insoluble in the NO oxygen of water
It is melted into NO soluble in water2、N2O3、N2O5, then by alkaline solution absorbed the NOx in flue gas, but it is big cost of investment to be present, fortune
The problems such as row is costly.
Utility model content
The defects of in order to make up prior art, the purpose of this utility model are to provide a kind of oxidation and denitration device, the dress
Put that simple in construction, operating cost is low.
The technical solution adopted in the utility model is：
A kind of oxidation and denitration device, including NaClO2- NaClO solution transfer pumps, desalination water pump, oxidant prepare storehouse, oxygen
Agent delivery pump, oxidation and denitration tower and lime white liquid pump, the oxidation and denitration tower include spray gun one, spray gun two, unloading valve, flue gas
Entrance and exhanst gas outlet, the spray gun one and the spray gun two are separately positioned on bottom and top in the oxidation and denitration tower, institute
State unloading valve and be arranged on the oxidation and denitration tower bottom, smoke inlet and exhanst gas outlet are separately positioned on the oxidation and denitration tower side
Wall bottom and top, the NaClO2- NaClO delivery pumps and the desalination water pump are prepared by pipeline and the oxidant respectively
The charging aperture one in storehouse is connected with charging aperture two, and the outlet that the oxidant prepares storehouse is pumped into by pipeline and oxidant conveying
Mouthful connection, the outlet of the oxidant delivery pump is connected with the spray gun one, the outlet of the lime white liquid pump by pipeline and
The spray gun two connects.
Oxidation and denitration device described in the utility model, wherein, the top that the denitrfying agent prepares storehouse is provided with return port, institute
State return port and pass through the pipeline communication between pipeline and the oxidant delivery pump and the oxidation and denitration tower.
Oxidation and denitration device described in the utility model, wherein, the denitrfying agent prepares and is additionally provided with steam vent at the top of storehouse.
The key reaction principle of oxidation and denitration device described in the utility model is：Using hardening agent NaClO2- NaClO is molten
Liquid uses lime slurry, utilizes the NaClO of penetrating as denitration oxidant, alkaline absorbent2In-NaClO solution and flue gas
NO is reacted, and NO is changed into NOx, recycle the lime slurry of top of tower penetrating to absorb NOx, ultimately generate Ca (NO3)2, it is real
Existing denitrating flue gas；Its main chemical reactions is：
NaClO2+2NO→2NO2+NaCl (1)
NaClO+NO→NO2+NaCl (2)
Ca(OH)2+2NO2+1/2O2→Ca(NO3)2+H2O (3)
Oxidant NaClO primarily serves oxidation in reaction (2), and reacts Ca (OH) in (3)2To NO2Absorbed.
The utility model beneficial effect：
Oxidation and denitration device described in the utility model, oxidation and denitration are coupled in an oxidation and denitration tower, simplified
Flow, easily operated, cost is low.
Brief description of the drawings
Fig. 1 is the structural representation of oxidation and denitration device described in the utility model.
Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail.
Embodiment
As shown in figure 1, a kind of oxidation and denitration device, including NaClO2- NaClO solution transfer pumps 1, desalination water pump 2, oxidation
Agent prepares storehouse 3, oxidant delivery pump 4, oxidation and denitration tower 5 and lime white liquid pump 6, and oxidation and denitration tower 5 includes spray gun 1, spray gun
2 52, unloading valve 53, smoke inlet 54 and exhanst gas outlet 55, spray gun 1 and spray gun 2 52 are separately positioned on oxidation and denitration tower 5
Interior bottom and top, unloading valve 53 are arranged on the bottom of oxidation and denitration tower 5, and smoke inlet 54 and exhanst gas outlet 55 are separately positioned on oxygen
Change the lower sidewall of denitrating tower 5 and top, NaClO2- NaClO delivery pumps 1 and desalination water pump 2 pass through pipeline and oxidant system respectively
The charging aperture 1 in standby storehouse 3 connects with charging aperture 2 32, and the outlet that oxidant prepares storehouse 3 passes through pipeline and oxidant delivery pump 4
Entrance is connected, and the outlet of oxidant delivery pump 4 is connected with spray gun 1, and the outlet of lime white liquid pump 6 passes through pipeline and spray gun two
52 connections；The top that denitrfying agent prepares storehouse 3 is provided with return port 33, unnecessary denitrfying agent is returned oxidant and prepares storehouse 3, return port 31
By the pipeline communication between pipeline and oxidant delivery pump 4 and oxidation and denitration tower 5, the top that denitrfying agent prepares storehouse 3 is additionally provided with
Steam vent 34.
The method of denitration of oxidation and denitration device described in the present embodiment, comprises the following steps：
(a) NaClO is passed through2- NaClO solution transfer pumps 1 are by 5~12wt% of available chlorine content NaClO2- NaClO is mixed
Solution is sent into oxidant and prepares storehouse 3, the NaClO2In-NaClO mixed solutions, NaClO2Mass ratio with NaClO is 1:3；
(b) demineralized water is sent into oxidant and prepares storehouse 3 by desalination water pump 2, by 5~12wt% of available chlorine content NaClO2-
NaClO mixed solutions are diluted to 1~5wt% of available chlorine content NaClO2- NaClO mixed solutions；
(c) oxidant delivery pump 4 is by 1~5wt% of available chlorine content NaClO2- NaClO mixed solutions pass through spray gun one
51 spray into oxidation and denitration tower 5；
(d) flue gas from boiler enters oxidation and denitration tower 5 from smoke inlet 54, with NaClO2- NaClO mixed solutions mix
Close, the NO in flue gas is oxidized to NOx；
(e) lime white liquid pump 6 sprays into 20wt% lime slurry in oxidation and denitration tower 5 by spray gun 2 52, sprays into institute
State the NaClO of 1~5wt% of available chlorine content in oxidation and denitration tower2The addition of-NaClO mixed solutions be 50~
1000ppm；
(f) boiler smoke is in the bottom of oxidation and denitration tower 5 and NaClO2After the mixing of-NaClO mixed solutions, in tower oxidation and denitration
The middle part of tower 5 and top mix with the lime slurry, the NOx in the flue gas and lime slurry reaction generation calcium nitrate,
The calcium nitrate is deposited to the bottom of oxidation and denitration tower 5, is discharged by unloading valve 53 outside tower.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New scope is defined, and on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this
The various modifications and improvement that the technical scheme of utility model is made, the protection of the utility model claims book determination all should be fallen into
In the range of.
Claims (3)
- A kind of 1. oxidation and denitration device, it is characterised in that：Including NaClO2- NaClO solution transfer pumps (1), desalination water pump (2), oxygen Agent prepares storehouse (3), oxidant delivery pump (4), oxidation and denitration tower (5) and lime white liquid pump (6), the oxidation and denitration tower (5) Including spray gun one (51), spray gun two (52), unloading valve (53), smoke inlet (54) and exhanst gas outlet (55), the spray gun one (51) and the spray gun two (52) is separately positioned on the interior bottom of the oxidation and denitration tower (5) and top, and the unloading valve (53) sets Put and be separately positioned on the oxidation and denitration tower in oxidation and denitration tower (5) bottom, smoke inlet (54) and exhanst gas outlet (55) (5) lower sidewall and top, the NaClO2- NaClO delivery pumps (1) and the desalination water pump (2) pass through pipeline and institute respectively The charging aperture one (31) for stating oxidant preparation storehouse (3) connects with charging aperture two (32), and the outlet that the oxidant prepares storehouse (3) leads to Piping connects with oxidant delivery pump (4) entrance, outlet and the spray gun one (51) of the oxidant delivery pump (4) Connection, the outlet of the lime white liquid pump (6) is connected by pipeline with the spray gun two (52).
- 2. oxidation and denitration device according to claim 1, it is characterised in that：Prepared by the denitrfying agent sets at the top of storehouse (3) Have a return port (33), the return port (33) by pipeline and the oxidant delivery pump (4) and the oxidation and denitration tower (5) it Between pipeline communication.
- 3. oxidation and denitration device according to claim 1 or 2, it is characterised in that：The denitrfying agent prepares the top of storehouse (3) It is additionally provided with steam vent (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622890.9U CN206853451U (en) | 2017-05-31 | 2017-05-31 | A kind of oxidation and denitration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622890.9U CN206853451U (en) | 2017-05-31 | 2017-05-31 | A kind of oxidation and denitration device |
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| Publication Number | Publication Date |
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| CN206853451U true CN206853451U (en) | 2018-01-09 |
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| CN201720622890.9U Active CN206853451U (en) | 2017-05-31 | 2017-05-31 | A kind of oxidation and denitration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243243A (en) * | 2017-05-31 | 2017-10-13 | 安徽国祯生态科技股份有限公司 | A kind of oxidation and denitration device and its method of denitration |
| CN115025602A (en) * | 2022-07-18 | 2022-09-09 | 上海蕲黄节能设备有限公司 | Biomass boiler flue gas denitration treatment equipment |
-
2017
- 2017-05-31 CN CN201720622890.9U patent/CN206853451U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243243A (en) * | 2017-05-31 | 2017-10-13 | 安徽国祯生态科技股份有限公司 | A kind of oxidation and denitration device and its method of denitration |
| CN115025602A (en) * | 2022-07-18 | 2022-09-09 | 上海蕲黄节能设备有限公司 | Biomass boiler flue gas denitration treatment equipment |
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