CN204042872U - Low nitrogen burning and SNCR denitration device - Google Patents
Low nitrogen burning and SNCR denitration device Download PDFInfo
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- CN204042872U CN204042872U CN201420469202.6U CN201420469202U CN204042872U CN 204042872 U CN204042872 U CN 204042872U CN 201420469202 U CN201420469202 U CN 201420469202U CN 204042872 U CN204042872 U CN 204042872U
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Abstract
The utility model discloses a kind of low nitrogen burning and SNCR denitration device, comprise low NO, multiple spray gun, reducing agent distributor, atomizing air distributor, spray gun cooling-air distributor, compressed air source and reducer feeding device, wherein low NO extend in the furnace chamber of boiler, and multiple spray gun extend in boiler furnace chamber, and reducing agent distributor is connected with multiple spray gun.Atomizing air distributor is connected with multiple spray gun.Spray gun cooling-air distributor is connected with multiple spray gun.Compressed air source is connected with spray gun cooling-air distributor with atomizing air distributor respectively, and reducer feeding device is connected with reducing agent distributor.According to low nitrogen burning of the present utility model and SNCR denitration device, utilize low nitrogen burning denitration technology and the denitration of SNCR method simultaneously, organically in conjunction with two kinds of denitrations, improve denitration efficiency.
Description
Technical field
The utility model relates to environmental technology field, relates to a kind of low nitrogen burning and SNCR denitration device particularly.
Background technology
Along with the raising of China's " atmosphere pollutants emission standards ", the requirement for fume emission is more and more stricter.At present, the medium and small coal-powder boiler denitrating flue gas of China exists that denitration efficiency is low, floor space large, investment and operating cost high, the requirement of fume emission cannot be met.Therefore, there are the needs improved.
In correlation technique, denitrating flue gas adopts single low nitrogen burning denitration technology or SNCR method (SNCR) denitration technology usually, although these two kinds of technology can the generation of control NOx effectively, denitration efficiency can only reach 40%-60%.Therefore, single low-NO_x combustion technology or SNCR technology can not meet denitration requirement all.Given this, the utility model people of the application proposes a kind of technology of effectively carrying out denitration in conjunction with low-NO_x combustion technology and SNCR technology, utilize this denitration technology, denitration efficiency can be improved significantly and denitration device floor space gap, investment and operating cost low.
For this reason, an object of the present utility model is to propose a kind of low nitrogen burning and SNCR denitration device, this denitration device utilizes low nitrogen burning denitration technology and the denitration of SNCR method simultaneously, organically in conjunction with two kinds of denitrations, improves denitration efficiency.
According to low nitrogen burning of the present utility model and SNCR denitration device, comprise low NO, multiple spray gun, reducing agent distributor, atomizing air distributor, spray gun cooling-air distributor, compressed air source and reducer feeding device, wherein said low NO extend in the furnace chamber of boiler, multiple described spray gun extend in described boiler furnace chamber, described reducing agent distributor is connected with multiple described spray gun, for supplying reducing agent to described spray gun, described atomizing air distributor is connected with multiple described spray gun, for supplying the atomizing air for being atomized described reducing agent in described spray gun, described spray gun cooling-air distributor is connected with multiple described spray gun, for the cooling-air to the described spray gun of described spray gun supply cooling, described compressed air source is connected with described spray gun cooling-air distributor with described atomizing air distributor respectively, described reducer feeding device is connected with described reducing agent distributor, for supplying reducing agent to described reducing agent distributor.
According to low nitrogen burning of the present utility model and SNCR denitration device, by being provided with low NO and the spray gun for spraying into reducing agent in furnace chamber, therefore this out of stock equipment utilizes low nitrogen burning denitration technology and the denitration of SNCR method simultaneously, organically in conjunction with two kinds of denitrations, improve denitration efficiency.
In embodiments more of the present utility model, described reducer feeding device is urea supply device and comprises: deionized water source; Dilution water softening tank, described dilution water softening tank is connected with described reducing agent distributor with described deionized water source; Dilution water pump, described dilution water pump is connected between described dilution water softening tank and described reducing agent distributor; Holding vessel, described holding vessel is connected with described reducing agent distributor; Reducing agent conveying jet pump, described reducing agent conveying jet pump is connected between described holding vessel and described reducing agent distributor; Dissolving tank, is provided with agitator in described dissolving tank, and described dissolving tank is connected with described deionized water source with urea granules measuring chute, described holding vessel respectively, and is provided with urea shifting pump between described dissolving tank and described holding vessel; And vapour source, described vapour source is connected with described dissolving tank with described holding vessel respectively.
Further, described reducer feeding device also comprises: urea granules loading hopper and for the urea granules in described urea granules loading hopper being transported to the urea granules bucket elevator in described urea granules measuring chute.
Preferably, described reducing agent conveying injection delivery side of pump is connected between described dilution water delivery side of pump and described reducing agent distributor.
According to specific embodiments more of the present utility model, described compressed air source comprises air accumulator and compressed air cylinder, described compressed air cylinder is connected with described air accumulator, and described compressed air cylinder is connected with described spray gun cooling-air distributor with described atomizing air distributor respectively.
In other embodiments of the present utility model, described reducer feeding device is ammoniacal liquor feedway or liquefied ammonia feedway.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Utility model content
The utility model is made following problem and true understanding and discovery based on utility model people.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of low nitrogen burning according to the utility model embodiment and SNCR denitration device.
Reference numeral:
Boiler 100, low NO 1, spray gun 2, reducing agent distributor 3, atomizing air distributor 4, spray gun cooling-air distributor 5, compressed air cylinder 6, air accumulator 7, dilution water softening tank 8, dilution water pump 9, deionized water source 10, holding vessel 11, reducing agent conveying jet pump 12, dissolving tank 13, agitator 14, urea shifting pump 15, vapour source 16, urea granules measuring chute 17, urea granules bucket elevator 18, urea granules loading hopper 19
Detailed description of the invention
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
Below with reference to Fig. 1 detailed description according to the low nitrogen burning of the utility model embodiment and SNCR denitration device, this low nitrogen burning and SNCR denitration device are used for carrying out out of stock to flue gas.
As shown in Figure 1, according to low nitrogen burning and the SNCR denitration device of the utility model embodiment, comprise low NO 1, multiple spray gun 2, reducing agent distributor 3, atomizing air distributor 4, spray gun cooling-air distributor 5, compressed air source and reducer feeding device, wherein low NO 1 extend in the furnace chamber of boiler 100, multiple spray gun 2 extend in the furnace chamber of boiler 100, and reducing agent distributor 3 is connected with multiple spray gun 2, for supplying reducing agent to spray gun 2.
Atomizing air distributor 4 is connected with multiple spray gun 2, for supplying the atomizing air for being atomized reducing agent in spray gun 2, spray gun cooling-air distributor 5 is connected with multiple spray gun 2, for supplying the cooling-air of cooling spray gun 2 to spray gun 2, compressed air source is connected with spray gun cooling-air distributor 5 with atomizing air distributor 4 respectively, reducer feeding device is connected with reducing agent distributor 3, for supplying reducing agent to reducing agent distributor 3.In concrete example of the present utility model, reducer feeding device can be urea supply device, ammoniacal liquor feedway or liquefied ammonia feedway.
Particularly, low NO 1 is generally that First air is divided into deep or light two strands, and concentrated phase is interior, and closer to flame kernel, light phase outside, presses close to the furnace wall of boiler 100.Concentrated phase is when interior catching fire, and flame temperature is relatively high, but oxygen is more less than relatively, therefore the probability of the nitrogen oxide generated reduces relatively, outside, oxygen is than relatively large for light phase, but because distance flame high-temperature area is comparatively far away, temperature is relatively low, therefore the generation of nitrogen oxide also can not be a lot.That is, the low nitrogen burning of the utility model embodiment and SNCR denitration device, by being provided with low NO 1 with the formation adopting the out of stock technology of low nitrogen burning to reduce nitrogen oxide.In brief, the out of stock technology of low nitrogen burning is exactly concentration by regulating ignition temperature, oxygen in flue gas, flue gas suppresses the generation of nitrogen oxide in the method such as time of staying of high-temperature region or destroy the nitrogen oxide generated.
In furnace chamber, spraying into reducing agent by being provided with spray gun 2 simultaneously, therefore also adopting the out of stock technology of SNCR method to carry out out of stock to flue gas according to the low nitrogen burning of the utility model embodiment and SNCR denitration device simultaneously.
During according to the low nitrogen burning of the utility model embodiment and the work of SNCR denitration device, flue gas is passed in the furnace chamber of boiler 100, low NO 1 works to adopt the out of stock technology of low nitrogen burning to reduce the generation of nitrogen oxide, and the temperature in the effect lower hearth of low NO 1 rises.
Reducer feeding device supplies reducing agent to reducing agent distributor 3 simultaneously, and reducing agent is supplied in multiple spray gun 2 by reducing agent distributor 3.
Atomizing air is supplied in atomizing air distributor 4 by compressed air source, atomizing air is supplied in multiple spray gun 2 by atomizing air distributor 4, reducing agent in each spray gun 2 is atomized and is ejected into from spray gun 2 in the furnace chamber of boiler 100 under the effect of atomizing air, under hot environment in burner hearth, be injected to the reducing agent in furnace chamber and selection chemical reaction occurs the nitrogen oxide in flue gas (mainly nitric oxide and nitrogen dioxide), generate nitrogen and water, thus reduce the nitrogen oxide in flue gas.Wherein employing atomizing air distributor 4 supplies the atomizing air for being atomized reducing agent in each spray gun 2, thus makes reducing agent be injected in furnace chamber with the form be atomized, and can increase the contact area of reducing agent and flue gas.
Wherein in the process of spray gun 2 work, compressed air source supplies cooling-air to spray gun cooling-air distributor 5, and cooling-air is sprayed to each spray gun 2 by spray gun cooling-air distributor 5, to reduce the temperature of spray gun 2, thus extends the service life of spray gun 2.Need to be described, the environment in the furnace chamber of air impact boiler 100 sprayed from spray gun cooling-air distributor 5, spray gun cooling-air distributor 5 should be sprayed to by cooling-air in the part being positioned at outside furnace chamber of each spray gun 2.
According to low nitrogen burning and the SNCR denitration device of the utility model embodiment, by being provided with low NO 1 and the spray gun 2 for spraying into reducing agent in furnace chamber, therefore this out of stock equipment utilizes low nitrogen burning denitration technology and the denitration of SNCR method simultaneously, organically in conjunction with two kinds of denitrations, improve denitration efficiency.
Below with reference to Fig. 1 detailed description according to the low nitrogen burning of the utility model specific embodiment and SNCR denitration device, wherein reducer feeding device is urea supply device.
As shown in Figure 1, according to low nitrogen burning and the SNCR denitration device of the utility model embodiment, comprise three boilers, 100, three low NOs, 1, reducer feeding device and a compressed air source, three boilers 100 respectively with three low NO 1 one_to_one corresponding.Each low NO 1 extend in the furnace chamber of corresponding boiler 100.Be understandable that, the quantity of boiler 100 is not limited thereto, and can arrange the quantity of boiler 100 according to the actual requirements, as long as ensure to carry out low nitrogen burning denitration and the denitration of SNCR method in each boiler 100 simultaneously.
All stretch into multiple spray gun 2 for reducing agent being injected to furnace chamber in the furnace chamber of each boiler 100, multiple spray guns 2 of each boiler 100 correspondence are connected with a spray gun cooling-air distributor 5 with an atomizing air distributor 4, reducing agent distributor 3 respectively.
Three atomizing air distributors 4 are connected with compressed air source respectively with three spray gun cooling-air distributors 5, and three reducing agent distributors 3 are connected with reducer feeding device respectively.
Reducer feeding device comprises deionized water source 10, dilution water softening tank 8, dilution water pump 9, holding vessel 11, reducing agent conveying jet pump 12, dissolving tank 13 and vapour source 16, and wherein, dilution water softening tank 8 is connected with reducing agent distributor 3 with deionized water source 10.Dilution water pump 9 is connected between dilution water softening tank 8 and reducing agent distributor 3.Holding vessel 11 is connected with reducing agent distributor 3.Reducing agent conveying jet pump 12 is connected between holding vessel 11 and reducing agent distributor 3.As shown in Figure 1, the outlet of reducing agent conveying jet pump 12 is connected between the dilution outlet of water pump 9 and reducing agent distributor 3.Thus make the structure of low nitrogen burning and SNCR denitration device simple.Wherein be understandable that, because reducing agent distributor 3 is three, therefore reducing agent conveying jet pump 12 be also three and with three reducing agent distributor 3 one_to_one corresponding, dilution water pump 9 be three and with three reducing agent distributor 3 one_to_one corresponding.
Be provided with agitator 14 in dissolving tank 13, dissolving tank 13 is connected with deionized water source 10 with urea granules measuring chute 17, holding vessel 11 respectively, and is provided with urea shifting pump 15 between dissolving tank 13 and holding vessel 11.Vapour source 16 is connected with dissolving tank 13 with holding vessel 11 respectively.
Particularly, urea granules is contained with in urea granules measuring chute 17, urea granules measuring chute 17 supplies urea granules in dissolving tank 13, deionized water is supplied in dissolving tank 13 by deionized water source 10, and urea granules and deionized water fully mix that in dissolving tank 13 urea granules is dissolved in deionized water to form urea liquid under the effect of agitator 14.
Urea liquid is transferred in holding vessel 11 and is stored under the effect of urea shifting pump 15, and wherein in the process of urea granules dissolving, vapour source 16 can provide steam to ensure that urea granules can fully dissolve in dissolving tank 13.Vapour source 16 can also supply steam to ensure that the humidity in holding vessel 11 is separated out to avoid urea granules in holding vessel 11.
Urea liquid in holding vessel 11 is transported in reducing agent distributor 3 under the effect of reducing agent conveying jet pump 12.Urea liquid is delivered in multiple spray gun 2 by reducing agent distributor 3.
Wherein deionized water source 10 supplies deionized water in dilution water softening tank 8, deionized water in dilution water softening tank 8 to be delivered in reducing agent distributor 3 dilute the urea liquid in reducing agent distributor 3 under the effect of dilution water pump 9, avoids urea liquid blocking reducing agent distributor 3.
As shown in Figure 1, reducer feeding device also comprises: urea granules loading hopper 19 and for the urea granules in urea granules loading hopper 19 being transported to the urea granules bucket elevator 18 in urea granules measuring chute 17.That is, urea granules is delivered in urea granules measuring chute 17 by urea granules bucket elevator 18 from urea granules loading hopper 19, thus can improve the automaticity of reducer feeding device.Wherein it should be noted that, the structure of bucket elevator and operation principle etc. are prior art, are just not described in detail here.
Compressed air source comprises air accumulator 7 and compressed air cylinder 6, and compressed air cylinder 6 is connected with air accumulator 7, and compressed air cylinder 6 is connected with spray gun cooling-air distributor 5 with atomizing air distributor 4 respectively.Thus make the structure of compressed air source simple.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (6)
1. a low nitrogen burning and SNCR denitration device, it is characterized in that, comprise low NO, multiple spray gun, reducing agent distributor, atomizing air distributor, spray gun cooling-air distributor, compressed air source and reducer feeding device, wherein said low NO extend in the furnace chamber of boiler, multiple described spray gun extend in described boiler furnace chamber, described reducing agent distributor is connected with multiple described spray gun, for supplying reducing agent to described spray gun, described atomizing air distributor is connected with multiple described spray gun, for supplying the atomizing air for being atomized described reducing agent in described spray gun, described spray gun cooling-air distributor is connected with multiple described spray gun, for the cooling-air to the described spray gun of described spray gun supply cooling, described compressed air source is connected with described spray gun cooling-air distributor with described atomizing air distributor respectively, described reducer feeding device is connected with described reducing agent distributor, for supplying reducing agent to described reducing agent distributor.
2. low nitrogen burning according to claim 1 and SNCR denitration device, is characterized in that, described reducer feeding device is urea supply device and comprises:
Deionized water source;
Dilution water softening tank, described dilution water softening tank is connected with described reducing agent distributor with described deionized water source;
Dilution water pump, described dilution water pump is connected between described dilution water softening tank and described reducing agent distributor;
Holding vessel, described holding vessel is connected with described reducing agent distributor;
Reducing agent conveying jet pump, described reducing agent conveying jet pump is connected between described holding vessel and described reducing agent distributor;
Dissolving tank, is provided with agitator in described dissolving tank, and described dissolving tank is connected with described deionized water source with urea granules measuring chute, described holding vessel respectively, and is provided with urea shifting pump between described dissolving tank and described holding vessel; With
Vapour source, described vapour source is connected with described dissolving tank with described holding vessel respectively.
3. low nitrogen burning according to claim 2 and SNCR denitration device, it is characterized in that, described reducer feeding device also comprises: urea granules loading hopper and for the urea granules in described urea granules loading hopper being transported to the urea granules bucket elevator in described urea granules measuring chute.
4. low nitrogen burning according to claim 2 and SNCR denitration device, is characterized in that, described reducing agent conveying is sprayed delivery side of pump and is connected between described dilution water delivery side of pump and described reducing agent distributor.
5. low nitrogen burning according to claim 1 and SNCR denitration device, it is characterized in that, described compressed air source comprises air accumulator and compressed air cylinder, described compressed air cylinder is connected with described air accumulator, and described compressed air cylinder is connected with described spray gun cooling-air distributor with described atomizing air distributor respectively.
6. low nitrogen burning according to claim 1 and SNCR denitration device, is characterized in that, described reducer feeding device is ammoniacal liquor feedway or liquefied ammonia feedway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469202.6U CN204042872U (en) | 2014-08-19 | 2014-08-19 | Low nitrogen burning and SNCR denitration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469202.6U CN204042872U (en) | 2014-08-19 | 2014-08-19 | Low nitrogen burning and SNCR denitration device |
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| CN204042872U true CN204042872U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420469202.6U Expired - Fee Related CN204042872U (en) | 2014-08-19 | 2014-08-19 | Low nitrogen burning and SNCR denitration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833682A (en) * | 2016-04-21 | 2016-08-10 | 成都华西堂环保科技有限公司 | Boiler air graded low-nitrogen combustion and denitration process |
| CN105944545A (en) * | 2016-06-23 | 2016-09-21 | 北京禹泰环保工程有限公司 | SNCR (Selective Non Catalytic Reduction) denitration device and denitration method thereof |
-
2014
- 2014-08-19 CN CN201420469202.6U patent/CN204042872U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833682A (en) * | 2016-04-21 | 2016-08-10 | 成都华西堂环保科技有限公司 | Boiler air graded low-nitrogen combustion and denitration process |
| CN105833682B (en) * | 2016-04-21 | 2018-07-27 | 成都华西堂环保科技有限公司 | A kind of boiler air classification low nitrogen burning and denitrating technique |
| CN105944545A (en) * | 2016-06-23 | 2016-09-21 | 北京禹泰环保工程有限公司 | SNCR (Selective Non Catalytic Reduction) denitration device and denitration method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |