CN107702108A - Garbage burning boiler returns the method that spray garbage leachate reduces NOx emission - Google Patents
Garbage burning boiler returns the method that spray garbage leachate reduces NOx emission Download PDFInfo
- Publication number
- CN107702108A CN107702108A CN201710965838.8A CN201710965838A CN107702108A CN 107702108 A CN107702108 A CN 107702108A CN 201710965838 A CN201710965838 A CN 201710965838A CN 107702108 A CN107702108 A CN 107702108A
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- CN
- China
- Prior art keywords
- spray
- leachate site
- garbage
- leachate
- burning boiler
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/54402—Injecting fluid waste into incinerator
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a kind of method that garbage burning boiler returns spray garbage leachate reduction NOx emission, including：Collecting pit is provided with garbage pool bottom, collects Leachate site caused by rubbish fermentation；The Leachate site is transported into buffer pool by immersible pump to be precipitated；Leachate site in buffer pool is returned to the burner hearth for being sprayed onto garbage burning boiler using Leachate site time spray apparatus.The present invention utilizes contains substantial amounts of ammonia nitrogen composition in Leachate site, and spray apparatus is returned by Leachate site, and carrying out Leachate site in burner hearth returns spray, reduce flue gas of garbage furnace NOx emission, urea liquid dosage is reduced, while reduces leachate treatment amount, ensure that the discharge of incinerator smoke is more cleaned, take full advantage of existing resource, simple in construction, expense is relatively low, works as fully automatic operation, operation operation simplifies, and repair and maintenance workload is small.
Description
Technical field
The present invention relates to the technical field of garbage burning boiler structure, and in particular to a kind of garbage burning boiler returns spray rubbish and oozed
Drip the method that liquid reduces NOx emission.
Background technology
With the fast development of economy and the raising of environmental protection consciousness, the processing of house refuse is that countries in the world are faced
An important and urgent environmental issue.Garbage disposal at present mainly using sanitary landfills, compost and burns three kinds of methods, rubbish
What heat caused by rubbish burning was available with, if by consumer waste filling and embedding compost and sanitary landfills, not only waste of resource, goes back
Pollute the environment.Burned in the boiler using house refuse, have minimizing, recycling and it is innoxious the advantages of, caused steaming
Vapour can be used for generating electricity and steam supply, has the social benefit saved the energy, reduced environmental pollution, also there is good economic benefit.
The garbage burning boiler control flue gas nitrogen oxide of waste incineration enterprise（NOx）Discharge, is sprayed in incinerator
The methods of entering urea liquid or ammoniacal liquor is controlled, referred to as SNCR control methods.Such control method longtime running can only be by cigarette
Gas NOx is controlled in 150mg/m3 or so；A part of enterprise can increase SCR system to reduce NOx emission in smoke processing system,
By flue gas NOx emission control in 75mg/m3 or so；But SCR system construction cost, operation cost are all very high.
The content of the invention
The technical problem to be solved in the present invention is：
Overcome the defects of above-mentioned existing processing flue gas nitrogen oxide cost is high, treatment effeciency is low and stability is poor, there is provided one
Kind garbage burning boiler returns the method that spray garbage leachate reduces NOx emission, and this method processing cost is low, effectively reduction flue gas nitrogen
NOx content in oxide.
To achieve the above object, the present invention provides following technical scheme：
The invention provides a kind of method that garbage burning boiler returns spray garbage leachate reduction NOx emission, including：
Collecting pit is provided with garbage pool bottom, collects Leachate site caused by rubbish fermentation；
The Leachate site is transported to by buffer pool by immersible pump, precipitated；
Leachate site in buffer pool is returned to the burner hearth for being sprayed onto garbage burning boiler using Leachate site time spray apparatus.
Further, the Leachate site returns spray apparatus and included：Return spray pump, conveyance conduit and spray gun；Described time spray pump is collected
Leachate site in buffer pool, and the Leachate site is delivered to the entrance of the conveyance conduit, the outlet of the conveyance conduit with
The entrance of the spray gun is connected, and is provided with the burner hearth of garbage burning boiler into pore, and the spray gun enters pore described in will
The Leachate site is sprayed onto the burner hearth of garbage burning boiler.
Further, the outlet of described time spray pump is provided with filter, filters the impurity in Leachate site.
Further, the shower nozzle is provided with nozzle, and the nozzle makes Leachate site be produced under 0.6MP pressure by spray gun
Fog, spray into burner hearth.
Further, the conveyance conduit uses stainless steel tube.
Further, the Leachate site returns spray apparatus and is provided with 8 spray guns；Wherein, 2 spray guns are arranged on garbage burning boiler
On first layer, the urea rifle on the first layer and garbage burning boiler is in same layer；6 spray guns are arranged on waste incineration
The second layer on boiler, the second layer is in the top of the first layer.
As shown from the above technical solution, garbage burning boiler provided by the invention, which returns spray garbage leachate, reduces NOx emission
Method, using containing substantial amounts of ammonia nitrogen composition in Leachate site, spray apparatus is returned by Leachate site, carrying out Leachate site in burner hearth returns
Spray, flue gas of garbage furnace NOx emission is reduced, reduce urea liquid dosage, while reduce leachate treatment amount, ensure that burning
The discharge of kiln gas is more cleaned, and takes full advantage of existing resource, and simple in construction, expense is relatively low, is worked as fully automatic operation, fortune
Row operation simplifies, and repair and maintenance workload is small.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is that garbage burning boiler provided in an embodiment of the present invention returns the method that spray garbage leachate reduces NOx emission
Schematic flow sheet；
Fig. 2 is that garbage burning boiler provided in an embodiment of the present invention returns urea in the method for spraying garbage leachate reduction NOx emission
Spray gun schematic view of the mounting position；
Fig. 3 is that garbage burning boiler provided in an embodiment of the present invention is returned first in the method for spraying garbage leachate reduction NOx emission
Layer spray gun schematic view of the mounting position；
Fig. 4 is that garbage burning boiler provided in an embodiment of the present invention is returned first in the method for spraying garbage leachate reduction NOx emission
Layer spray gun schematic view of the mounting position.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The following embodiments of the present invention, which propose a kind of garbage burning boiler, which returns spray garbage leachate, reduces the side of NOx emission
Method, referring to Fig. 1, this method specifically comprises the following steps：
S101：Collecting pit is provided with garbage pool bottom, collects Leachate site caused by rubbish fermentation；
In this step, garbage pool bottom is provided with collecting pit, collects Leachate site caused by rubbish fermentation, Leachate site is in collecting pit
Carry out preliminary sedimentation.
S102：The Leachate site is transported into buffer pool by immersible pump to be precipitated；
In this step, after Leachate site carries out preliminary sedimentation in collecting pit, drip will be oozed by two immersible pumps in cage
Liquid is transported in buffer pool from collecting pit, is further precipitated.
S103：Leachate site in buffer pool is returned to the burner hearth for being sprayed onto garbage burning boiler using Leachate site time spray apparatus.
It was found from foregoing description, the garbage burning boiler that the present embodiment provides returns spray garbage leachate reduction NOx emission
Method, using substantial amounts of ammonia nitrogen composition is contained in Leachate site, by the way of Leachate site in stove returns spray, make in burning inner flue gas of the stove
NOx emission substantially reduce, ensure that the discharge of incinerator smoke is more cleaned；Waste incinerator sprays into Leachate site, can reduce spray
The urea liquid or ammonia vol entered, it is cost-effective；Leachate treatment process is relatively difficult, and cost is higher, is sprayed into incinerator
Leachate site, the processing pressure of Leachate site system can be reduced.
The Leachate site in further above-described embodiment, which returns spray apparatus, to be included：Return spray pump, conveyance conduit and spray gun；Institute
The Leachate site in spray pump collection buffer pool is stated back, and the Leachate site is delivered to the entrance of the conveyance conduit, the conveying
The outlet of pipeline is connected with the entrance of the spray gun, is provided with the burner hearth of garbage burning boiler into pore, the spray gun passes through
It is described enter pore the Leachate site is sprayed onto to the burner hearth of garbage burning boiler.
In the specific implementation, spray pump is returned in 1MP using two rated pressures, the Leachate site in buffer pool is passed through into conveying
Pipeline and spray gun, which return, is sprayed onto burner hearth.Two Leachate sites of normal condition return spray pump the using and the reserved, and the outlet that spray pump is returned in Leachate site is set
There is filter, periodically cleaned, ensure that Leachate site does not have too many impurity.
Further, Leachate site spray gun is arranged on burner hearth high-temperature region periphery, and the exit of spray gun is provided with special high temperature-proof
Nozzle, the nozzle make Leachate site produce atomization by spray gun under 0.6MP pressure, spray into burner hearth.Make the ammonia nitrogen in Leachate site
Fully reflect with NOx in burner hearth, further reduce NOx yield.
Using substantial amounts of ammonia nitrogen composition is contained in Leachate site, spray system is returned by Leachate site, entered above the flame of burner hearth
The comprehensive Leachate site of row returns spray, flue gas NOx discharge is have decreased to 100mg/m3 or so by 150mg/m3.
It is strong to the corrosivity of pipeline because Leachate site chemical analysis is complicated, the conveyance conduit that whole Leachate site is returned in spray apparatus
Employ corrosion resistant stainless steel tube.In order to facilitate operation, a whole set of Leachate site returns spray apparatus and also uses distant place DCS operations system
System, realize preferably operation and remote monitoring.
The urea liquid blent is sprayed into burner hearth, to reach control NOx by garbage burning boiler by urea injection system
Purpose.Urea injection system includes：Urea box, urea pump and urea spray gun equipment composition.Referring to Fig. 2, urea spray gun installation
In the top of burner hearth front wall flame, 4 urea spray guns are shared, are once arranged.
Garbage burning boiler returns spray system by Leachate site and spray Leachate site is returned into burner hearth, and Leachate site, which returns spray system, to be included：
Buffer pool, Leachate site jet pump, filter, Leachate site spray gun.Leachate site spray gun installs 8 additional altogether, divides two layers and is arranged on burner hearth
Left side wall, right-side wall, rear wall.Referring to Fig. 3,2 spray guns in 8 Leachate site spray guns are arranged on first on garbage burning boiler
Layer, the first layer are in same layer with the urea rifle on garbage burning boiler；Referring to Fig. 4,6 spray guns are arranged on waste incineration
The second layer on boiler, the second layer is in the top of the first layer.
By the comprehensive penetrating burner hearth of two layers of Leachate site, filled the ammonia nitrogen in NOx and Leachate site in flue gas
Divide reaction, control NOx well.
By foregoing description, garbage burning boiler provided by the invention, which returns spray garbage leachate, reduces NOx emission
Method waste incinerator is while penetrating urea liquid or ammoniacal liquor etc. are controlled；Spray system, increase spray are returned by Leachate site
Enter Leachate site, the Leachate site containing a large amount of ammonia nitrogen compositions is returned and is sprayed onto burner hearth, flue gas DS NOx Est can be controlled left in 100mg/m3
It is right；Flue gas of garbage furnace DS NOx Est is reduced, reduces urea liquid dosage and consumption, while reduce leachate treatment amount.And
With simple in construction, expense is relatively low, works and simplifies for fully automatic operation, operation operation, repair and maintenance workload is small.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.Term " on ", " under " etc. refers to
The orientation or position relationship shown is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies
Description, rather than the device or element of instruction or hint meaning must have specific orientation, with specific azimuth configuration and behaviour
Make, therefore be not considered as limiting the invention.Unless otherwise clearly defined and limited, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
In the specification of the present invention, numerous specific details are set forth.Although it is understood that embodiments of the invention can
To be put into practice in the case of these no details.In some instances, known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this description.Similarly, it will be appreciated that disclose in order to simplify the present invention and helps to understand respectively
One or more of individual inventive aspect, in the description to the exemplary embodiment of the present invention above, each spy of the invention
Sign is grouped together into single embodiment, figure or descriptions thereof sometimes.However, should not be by the method solution of the disclosure
Release and be intended in reflection is following：I.e. the present invention for required protection requirement is than the feature that is expressly recited in each claim more
More features.More precisely, as the following claims reflect, inventive aspect is to be less than single reality disclosed above
Apply all features of example.Therefore, it then follows thus claims of embodiment are expressly incorporated in the embodiment,
Wherein each claim is in itself as separate embodiments of the invention.It should be noted that in the case where not conflicting, this
The feature in embodiment and embodiment in application can be mutually combined.The invention is not limited in any single aspect,
Any single embodiment is not limited to, is also not limited to any combination and/or the displacement of these aspects and/or embodiment.And
And can be used alone the present invention each aspect and/or embodiment or with other one or more aspects and/or its implementation
Example is used in combination.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it all should cover among the claim of the present invention and the scope of specification.
Claims (6)
1. a kind of garbage burning boiler returns the method that spray garbage leachate reduces NOx emission, it is characterised in that methods described bag
Include：
Collecting pit is provided with garbage pool bottom, collects Leachate site caused by rubbish fermentation；
The Leachate site is transported into buffer pool by immersible pump to be precipitated；
Leachate site in buffer pool is returned to the burner hearth for being sprayed onto garbage burning boiler using Leachate site time spray apparatus.
2. according to the method for claim 1, it is characterised in that the Leachate site, which returns spray apparatus, to be included：Return spray pump, delivery pipe
Road and spray gun；Described time spray pump collects the Leachate site in buffer pool, and the Leachate site is delivered into entering for the conveyance conduit
Mouthful, the outlet of the conveyance conduit is connected with the entrance of the spray gun, is provided with the burner hearth of garbage burning boiler into pore, institute
State spray gun and enter the burner hearth that the Leachate site is sprayed onto garbage burning boiler by pore described in.
3. according to the method for claim 2, it is characterised in that the outlet of described time spray pump is provided with filter, and drip is oozed in filtering
Impurity in liquid.
4. according to the method for claim 3, it is characterised in that the shower nozzle is provided with nozzle, and the nozzle makes Leachate site
Atomization is produced by spray gun under 0.6MP pressure, sprays into burner hearth.
5. according to the method for claim 4, it is characterised in that the conveyance conduit uses stainless steel tube.
6. according to the method for claim 2, it is characterised in that the Leachate site returns spray apparatus and is provided with 8 spray guns；Wherein, 2
Individual spray gun is arranged on the first layer on garbage burning boiler, and the first layer is in same with the urea rifle on garbage burning boiler
Layer；6 spray guns are arranged on the second layer on garbage burning boiler, and the second layer is in the top of the first layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965838.8A CN107702108A (en) | 2017-10-17 | 2017-10-17 | Garbage burning boiler returns the method that spray garbage leachate reduces NOx emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965838.8A CN107702108A (en) | 2017-10-17 | 2017-10-17 | Garbage burning boiler returns the method that spray garbage leachate reduces NOx emission |
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| Publication Number | Publication Date |
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| CN107702108A true CN107702108A (en) | 2018-02-16 |
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| CN201710965838.8A Pending CN107702108A (en) | 2017-10-17 | 2017-10-17 | Garbage burning boiler returns the method that spray garbage leachate reduces NOx emission |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092040A (en) * | 2018-10-09 | 2018-12-28 | 北京高安屯垃圾焚烧有限公司 | The method that garbage burning boiler Leachate site returns spray system and reduces NOx content |
| CN110454802A (en) * | 2019-09-05 | 2019-11-15 | 成都市兴蓉再生能源有限公司 | The concentrate for reducing nitrous oxides concentration in furnace enters furnace and returns spray system and return spray method |
| CN112146101A (en) * | 2020-09-27 | 2020-12-29 | 广东通德电力工程有限公司 | Be used for rubbish power plant concentrate to spout furnace device again |
| CN114014457A (en) * | 2021-10-20 | 2022-02-08 | 江苏梵坤环保科技发展股份有限公司 | Leachate back-spraying system of waste incineration boiler and reduction of NOxMethod of content |
| CN116440698A (en) * | 2023-06-14 | 2023-07-18 | 北京华宇辉煌生态环保科技股份有限公司 | Dedusting and denitration equipment, and smoke and odor cooperative treatment system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109092040A (en) * | 2018-10-09 | 2018-12-28 | 北京高安屯垃圾焚烧有限公司 | The method that garbage burning boiler Leachate site returns spray system and reduces NOx content |
| CN110454802A (en) * | 2019-09-05 | 2019-11-15 | 成都市兴蓉再生能源有限公司 | The concentrate for reducing nitrous oxides concentration in furnace enters furnace and returns spray system and return spray method |
| CN112146101A (en) * | 2020-09-27 | 2020-12-29 | 广东通德电力工程有限公司 | Be used for rubbish power plant concentrate to spout furnace device again |
| CN114014457A (en) * | 2021-10-20 | 2022-02-08 | 江苏梵坤环保科技发展股份有限公司 | Leachate back-spraying system of waste incineration boiler and reduction of NOxMethod of content |
| CN116440698A (en) * | 2023-06-14 | 2023-07-18 | 北京华宇辉煌生态环保科技股份有限公司 | Dedusting and denitration equipment, and smoke and odor cooperative treatment system and method |
| CN116440698B (en) * | 2023-06-14 | 2023-09-08 | 北京华宇辉煌生态环保科技股份有限公司 | Dedusting and denitration equipment, and smoke and odor cooperative treatment system and method |
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Application publication date: 20180216 |