CN206935076U - Dry method desulfuration system for biomass incinerator - Google Patents
Dry method desulfuration system for biomass incinerator Download PDFInfo
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- CN206935076U CN206935076U CN201720860313.3U CN201720860313U CN206935076U CN 206935076 U CN206935076 U CN 206935076U CN 201720860313 U CN201720860313 U CN 201720860313U CN 206935076 U CN206935076 U CN 206935076U
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Abstract
The utility model provides a kind of dry method desulfuration system for biomass incinerator, the system includes circulation ash silo, lime silo, pipe chain machine, discharging spiral, blower fan, steam heater, steam pipework, powder carry pipeline, spray gun and Venturi tube, and the combination ash formed after the ash mixing circulated in ash silo and the lime silo mixes after the pipe chain machine, the discharging spiral, the powder carry pipeline and the spray gun with by the flue gas of the Venturi tube successively.According to the utility model, the sulfide ＜ 50mg/Nm in flue gas caused by biomass burning can be reached3Emission request.
Description
Technical field
It the utility model is related to biomass and burn field, in particular to a kind of for the efficiently dry of biomass incinerator
Method desulphurization system.
Background technology
Contain in flue gas caused by biomass burning process substantial amounts of pollutant (such as nitrogen oxides, flue dust, sulfide,
Metal etc.) there is different degrees of harm to environment.The sulfur dioxide being discharged in air there are about half and be transformed into sulfuric acid and sulfuric acid
Salt, it is drifted or is deposited in cloud and mist in atmosphere with the aerosol form of sulfuric acid mist, runs into the weather of rainfall, and sulfuric acid is rushed
Wash in descent and reform into the acid rain containing sulfuric acid.Production and living influence of the acid rain on us is very huge, in order to
Ensure that the concentration of emission of sulfur dioxide in flue gas meets discharging standards, it is necessary to which flue gas caused by biomass burning process is entered
Row desulfurization process.Biomass incineration flue gas desulfurization process prevailing technology is dry method+bag-type dust at present, and the system can meet national standard
Emission request.
In terms of biomass incineration flue gas discharge, the standard of European Union 2010 is that flue gas desulfurization effect requirements reach SO2＜
50mg/Nm3, currently used dry method+bag-type dust removal system can not meet the requirement.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of dry method desulfuration system for biomass incinerator,
The system includes circulation ash silo, lime silo, pipe chain machine, discharging spiral, blower fan, steam heater, steam pipework, powder carry
Pipeline, spray gun and Venturi tube, the combination ash formed after the ash mixing circulated in ash silo and the lime silo are passed through successively
With passing through the flue gas of the Venturi tube after the pipe chain machine, the discharging spiral, the powder carry pipeline and the spray gun
Mixing.
In one example, the ash in the circulation ash silo is the dedusting ash do not reacted completely under deduster.
In one example, the ash in the lime silo is calcium hydroxide.
In one example, it is defeated to enter the powder after steam heater heating for the air of the fan outlet
Pipeline is sent, to improve the activity of the combination ash in the powder carry pipeline.
In one example, spraying into steam to the spray gun by the steam pipework makes the mixing fogged and in institute
The surface for stating combination ash forms wet film, to strengthen the diffusion effect of the combination ash.
In one example, the flue gas comes from the biomass incinerator, and the biomass incinerator is updraft type gas
Change stove.
According to the utility model, the sulfide ＜ 50mg/Nm in flue gas caused by biomass burning can be reached3Discharge
It is required that.
Brief description of the drawings
Drawings below of the present utility model is used to understand the utility model in this as a part of the present utility model.Accompanying drawing
In show embodiment of the present utility model and its description, for explaining principle of the present utility model.
In accompanying drawing：
Fig. 1 is the signal according to the dry method desulfuration system for biomass incinerator of the utility model exemplary embodiment
Figure.
Embodiment
In the following description, a large amount of concrete details are given more thoroughly to manage the utility model to provide
Solution.It is, however, obvious to a person skilled in the art that the utility model can be without one or more of these thin
Save and be carried out.In other examples, in order to avoid obscuring with the utility model, for more well known in the art
Technical characteristic is not described.
In order to thoroughly understand the utility model, detailed method and step and/or structure will be proposed in following description.It is aobvious
So, execution of the present utility model is not limited to specific details appreciated by those skilled in the art.It is of the present utility model compared with
Good embodiment is described in detail as follows, but in addition to these detailed descriptions, the utility model can also have other embodiment.
It should be appreciated that the utility model can be implemented in different forms, and should not be construed as being limited to carry here
The embodiment gone out.On the contrary, providing these embodiments disclosure will be made thoroughly and complete and the scope of the utility model is complete
Ground passes to those skilled in the art.In the accompanying drawings, for clarity, the size and relative size in Ceng He areas may be exaggerated.
Same reference numerals represent identical element from beginning to end.
It should be appreciated that when using term "comprising" and/or " comprising " in this manual, it is indicated described in presence
Feature, entirety, step, operation, element and/or component, but do not preclude the presence or addition of other one or more features, entirety,
Step, operation, element, component and/or combinations thereof." one " of singulative, "one" and " described/should " be also intended to include
Plural form, unless context is expressly noted that other mode.
Contain in flue gas caused by biomass burning process substantial amounts of pollutant (such as nitrogen oxides, flue dust, sulfide,
Metal etc.) there is different degrees of harm to environment.The sulfur dioxide being discharged in air there are about half and be transformed into sulfuric acid and sulfuric acid
Salt, it is drifted or is deposited in cloud and mist in atmosphere with the aerosol form of sulfuric acid mist, runs into the weather of rainfall, and sulfuric acid is rushed
Wash in descent and reform into the acid rain containing sulfuric acid.Production and living influence of the acid rain on us is very huge, in order to
Ensure that the concentration of emission of sulfur dioxide in flue gas meets discharging standards, it is necessary to which flue gas caused by biomass burning process is entered
Row desulfurization process.Biomass incineration flue gas desulfurization process prevailing technology is dry method+bag-type dust at present, and the system can meet national standard
Emission request.
In terms of biomass incineration flue gas discharge, the standard of European Union 2010 is that flue gas desulfurization effect requirements reach SO2＜
50mg/Nm3, currently used dry method+bag-type dust removal system can not meet the requirement.Burning power plant is using semidry method+dry
Method+cloth bag can realize the i.e. SO of discharge standard of European Union 20102＜ 50mg/Nm3Standard, but due to biomass incinerator export temperature
(130 DEG C~160 DEG C) are spent close to acid dew-point temperature, it is impossible to the semidry method of burning power plant are used for reference, to avoid lower temperature
Corrosion of the flue gas to equipment.
In order to solve the above-mentioned technical problem, the utility model proposes a kind of efficient dry desulfurization for biomass incinerator
System, the sulfide ＜ 50mg/Nm in flue gas caused by biomass burning can be reached3Emission request.
[exemplary embodiment]
Reference picture 1, it illustrates the dry method for biomass incinerator according to the utility model exemplary embodiment to take off
The schematic diagram of sulphur system.
As shown in figure 1, the utility model proposes the dry method desulfuration system for biomass incinerator by circulation ash silo 1,
Lime silo 2, pipe chain machine 3, discharging spiral 4, blower fan 5, steam heater 6, steam pipework 7, powder carry pipeline 8, spray gun 9, text
The grade of venturi 10 forms.
When the dry method desulfuration system work for biomass incinerator, the ash circulated in ash silo 1 is not complete under deduster
Calcium hydroxide in the dedusting ash and lime silo 2 of full response enters powder delivering pipe road 8 after pipe chain machine 3 is delivered to discharging spiral 4.
The air that blower fan 5 exports enters powder delivering pipe road 8 after steam heater 6 is heated to certain temperature, blows from discharging spiral shell
The combination ash (i.e. dedusting ash and calcium hydroxide) of rotation 4 out enters spray gun 9, and spray gun 9 sprays combination ash to Venturi tube 10 so that
Combination ash is reacted with the flue gas Jing Guo Venturi tube 10.To improve reaction efficiency, sprayed into by steam pipework 7 to spray gun 9
One steam to mix fogged and forms one layer of wet film on surface, to strengthen the diffusion effect of combination ash, so as to carry significantly
High desulfurization efficiency.
The utility model proposes the dry method desulfuration system for biomass incinerator there is advantages below：
(1) air that blower fan 5 exports is heated using steam heater 6, can improve the combination ash in powder carry pipeline 8
Activity；
(2) one steam mixing fogged is sprayed into spray gun 9 by steam pipework 7 and forms wet film on surface, with
Strengthen the diffusion effect of combination ash, so as to greatly improve desulfuration efficiency；
(3) Venturi tube structure is set on rear side of the entrance of spray gun 9 so that is sprayed into by the flue gas of Venturi tube 10 with spray gun 9
Combination ash more uniformly mixes；
(4) the combination ash desulfurization of the dedusting ash do not reacted completely under deduster and calcium hydroxide mixing composition is used, reduces thing
Material consumption.
Biomass incinerator is come from by the flue gas of Venturi tube 10, biomass material (such as stalk, wood chip etc.) enters
After the feed hopper of biomass incinerator, the top side from the bottom of feed hopper by material-pulling device via biomass incinerator
Charging aperture enter body of heater, it is preferable that the material-pulling device is using spiral feeding manner by the biomass material from feed hopper
It is sent into body of heater.
The preferred uniflow gas stove of biomass incinerator, with contain in flue gas caused by guarantee enough small molecule hydro carbons and
Tar.Gasifying medium uses air, and gasifying medium air enters body of heater by the air inlet of biomass incinerator bottom.Biomass is burnt
Burn the bed of material accumulated in stove and be from top to bottom divided into four regions：Dry section, cracking zone, reducing zone and zoneofoxidation.In zoneofoxidation, gas
Change medium air and oxidation reaction occurs with biomass material, generate CO2、CO、H2O etc., while release heat.In reducing zone, come from
Oxygen in air is depleted, and due to oxygen supply deficiency, the burning of biomass material is insufficient, produces CO, and release heat；Together
When, the CO from zoneofoxidation2Reduction reaction occurs with the C in biomass material, generates CO, CH4、CmHn、H2、H2O etc., herein mistake
Cheng Zhong, heated biomass material also crack, and fuel gas therein is that volatile component separates out from raw material, turns into combustion
A part for gas, the raw material in reducing zone under Action of Gravity Field because falling into zoneofoxidation.In cracking zone, biomass material is by from reducing zone
The hot gas heating to come up, occurs cracking reaction, in this reaction, most of volatile component in biomass is volatilized, and is split
The product of solution preocess has charcoal, tar, H2、CO、CO2、CH4With vapor etc., the process needs to absorb heat, and is remained caused by cracking zone
Thing is because Action of Gravity Field enters reducing zone, and caused hot gas enters dry section.In dry section, biomass material is carried out autothermic cracking
The hot gas heating in area, moisture evaporation therein is vapor, and so as to be able to drying, dried material enters because of Action of Gravity Field
Cracking zone, and hot gas is brought out gasification furnace as combustion gas (gasify gas) and used.Lime-ash positioned at bed of material bottom is via rotation
Turn ash disposal fire grate discharge body of heater.
The utility model is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is
For the purpose illustrated and illustrated, and it is not intended to the utility model being limited in described scope of embodiments.In addition ability
Field technique personnel are it is understood that the utility model is not limited to above-described embodiment, according to teaching of the present utility model also
More kinds of variants and modifications can be made, these variants and modifications all fall within the utility model scope claimed with
It is interior.The scope of protection of the utility model is defined by the appended claims and its equivalent scope.
Claims (6)
1. a kind of dry method desulfuration system for biomass incinerator, it is characterised in that the system includes circulation ash silo, lime
Storehouse, pipe chain machine, discharging spiral, blower fan, steam heater, steam pipework, powder carry pipeline, spray gun and Venturi tube, it is described
After ash mixing in circulation ash silo and the lime silo combination ash that is formed successively by the pipe chain machine, the discharging spiral,
Mixed after the powder carry pipeline and the spray gun with by the flue gas of the Venturi tube.
2. system according to claim 1, it is characterised in that the ash in the circulation ash silo is completely not anti-under deduster
The dedusting ash answered.
3. system according to claim 1, it is characterised in that the ash in the lime silo is calcium hydroxide.
4. system according to claim 1, it is characterised in that the air of the fan outlet passes through the steam heater
Enter the powder carry pipeline after heating, to improve the activity of the combination ash in the powder carry pipeline.
5. system according to claim 1, it is characterised in that spraying into steam to the spray gun by the steam pipework makes
It is described to mix fogged and form wet film on the surface of the combination ash, to strengthen the diffusion effect of the combination ash.
6. according to the system described in one of claim 1-5, it is characterised in that the flue gas comes from the biomass incinerator,
The biomass incinerator is uniflow gas stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720860313.3U CN206935076U (en) | 2017-07-14 | 2017-07-14 | Dry method desulfuration system for biomass incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720860313.3U CN206935076U (en) | 2017-07-14 | 2017-07-14 | Dry method desulfuration system for biomass incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206935076U true CN206935076U (en) | 2018-01-30 |
Family
ID=61368100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720860313.3U Active CN206935076U (en) | 2017-07-14 | 2017-07-14 | Dry method desulfuration system for biomass incinerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206935076U (en) |
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2017
- 2017-07-14 CN CN201720860313.3U patent/CN206935076U/en active Active
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