CN109107369A - SO in a kind of flue gas3Removing system and method - Google Patents
SO in a kind of flue gas3Removing system and method Download PDFInfo
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- CN109107369A CN109107369A CN201811023627.3A CN201811023627A CN109107369A CN 109107369 A CN109107369 A CN 109107369A CN 201811023627 A CN201811023627 A CN 201811023627A CN 109107369 A CN109107369 A CN 109107369A
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- pipeline
- lye
- fluid reservoir
- liquid
- flue gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses SO in a kind of flue gas3Removing system and method, removing system includes fluid reservoir, and the bosom of fluid reservoir is provided with blender, which further includes lye heating system, alkali liquor circulating system, atomization spray system.The application method of removing system is divided into multiple steps such as liquid, fixed temperature, flow monitoring, atomized spray, purging and backwashes.The present invention has atomization reaction efficiency height, SO3The good advantage of removal effect, is widely portable in flue gas in SO2To SO before removing3Removing；In addition, be provided with alkali liquor circulating system, can effective systems stabilisation pressure, avoid the pressure imbalance caused by system or even damage system, practicability when opening more injection pipes very strong.
Description
Technical field
The present invention relates to SO in a kind of system and method more particularly to a kind of flue gas3Removing system and method.
Background technique
In recent years, with the exacerbation of atmosphere pollution and the fast lifting of whole society's environmental consciousness, SO in flue gas2Discharge
Concentration increasingly causes the attention of government and environmental protection administration, and its removing process has reached its maturity.But current few producers
To SO in flue gas3Removing process carry out Depth Study, also only have individual countries in global range to SO3And SO2It is distinguished
And special discharge standard is formulated, but these standards are also only by SO3The acid gas emissions total amount a small amount of with other carries out
Control, not individually to SO3Discharge standard controlled.In fact, SO3Compare SO2Toxicity it is more than ten times high, and have strong rotten
Corrosion, although SO3Content in flue gas is only SO21-2%, but in view of its influence to human health and air visibility,
People should give great attention, to SO2While carrying out emission reduction with NOx, also to pay attention to SO3Emission reduction.Conventional flue gas is de-
Sulphur technique (such as limestone wet-process) can effectively remove the SO in flue gas2, but to SO3Removal efficiency it is but very low.With environmental pollution
Level-one control emission problem becomes increasingly conspicuous, and reinforces to SO in flue gas3The discharge standard of content limits, and will certainly become environmentally friendly class
New trend in topic.
Summary of the invention
In order to solve shortcoming present in above-mentioned technology, the present invention provides SO in a kind of flue gas3Removing system
And method.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: SO in a kind of flue gas3Removing system,
Including fluid reservoir, the bosom of fluid reservoir is provided with blender, which further includes lye heating system, lye cyclic system
System, atomization spray system；
Lye heating system includes heat medium pipeline, disk still further below after heat medium pipeline is penetrated from the upper end of fluid reservoir
Rotation extends and stretches out from the lower end of fluid reservoir；The input of heat medium pipeline, output end are connected with medium heating device, structure
At soft circulation circuit；
Alkali liquor circulating system includes liquid-transport pipe-line, back liquid pipeline；The front end of liquid-transport pipe-line is communicated with fluid reservoir, and rear end passes through
Two-fluid pipeline is connected with injection apparatus；Variable frequency pump is provided on liquid-transport pipe-line；One end of back liquid pipeline is connected to perfusion tube
The rear end in road, the other end are communicated with fluid reservoir；
Injection apparatus is made of more injection pipes, and multiple two-fluid spray nozzles are provided on every injection pipe；Injection
The input terminal of device is provided with medium-type atomizer, and the output channel of medium-type atomizer issues downwards Liang Tiao branch, and two points
Branch is respectively atomization conduit, purging pipeline；Atomization conduit is connected after extending downwardly with two-fluid pipeline；Purging pipeline prolongs downwards
Directly it is connected with injection apparatus after stretching.
The liquid-transport pipe-line of variable frequency pump front end is connected with Backwash pipeline, and the input terminal of Backwash pipeline is provided with backwash
Device.
The input terminal of heat medium pipeline is provided with No.1 regulating valve.
The input terminal of back liquid pipeline is provided with No. two regulating valves.
High-precision flow is provided on the liquid-transport pipe-line of variable frequency pump rear end, on the back liquid pipeline of No. two regulating valve front ends
Meter.
The inner top side of fluid reservoir, lower end are respectively arranged with liquidometer, densitometer.
The front end of fluid reservoir is provided with mixed flow container, and lye is delivered in fluid reservoir again after the completion of configuration in mixed flow container.
Injection apparatus is set in flue, is fixedly installed SO above injection apparatus, in the flue of lower section3Detector.
Temperature sensor is provided on the inner wall of fluid reservoir.
SO in a kind of flue gas3Removing system application method, operating process are as follows:
A, lye is configured by demineralized water in mixed flow container, lye is delivered in fluid reservoir after configuration is complete；
B, when alkali liquid temperature is lower than setting value, No.1 regulating valve is opened, steam or heat are conveyed into heat medium pipeline
Water；With lye heat exchange can occur for steam or hot water after entering in fluid reservoir, to make lye reach set temperature and prevent
It is crystallized；
C, the lye for reaching temperature requirement controls its amount of injection in liquid-transport pipe-line by variable frequency pump, and by high-precision
It spends flowmeter and carries out flow monitoring；
D, the lye exported from liquid-transport pipe-line, is on the one hand ejected by injection apparatus, with the SO in flue3Gas
On the other hand hybrid reaction is back in fluid reservoir by back liquid pipeline, constitute circulation loop, is opening more injections to stablize
The pressure imbalance caused by system when pipeline；
E, when lye is conveyed by liquid-transport pipe-line into injection apparatus, while medium-type atomizer is opened, makes to be situated between
Matter, into injection apparatus, and lye impingement mix and is dispelled by atomization conduit high speed injection and reaches atomization, to be conducive to
Lye and flue gas are sufficiently mixed, and guarantee lye and SO3Reaction rate；After every subsystem has been run, it can be blown by opening
It sweeps pipeline to purge injection apparatus, avoids lye crystallization and plug nozzle；
F, when system shutdown or generation Crystallization Plugging, pass through Backwash pipeline with clear water and rinse whole system and injection
Device, to release crystallization and prevent lye corrosion caused by pipeline.
The present invention has atomization reaction efficiency height, SO3The good advantage of removal effect, is widely portable in flue gas in SO2It is de-
Except before to SO3Removing；In addition, be provided with alkali liquor circulating system, can effective systems stabilisation pressure, avoid opening more sprays
The pressure imbalance caused by system even damage system, practicability are very strong when penetrating pipeline.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the structural schematic diagram of injection pipe.
In figure: 1, fluid reservoir；2, blender；3, liquidometer；4, densitometer；5, heat medium pipeline；51, No.1 is adjusted
Valve；6, back purge system；7, liquid-transport pipe-line；71, variable frequency pump；72, high precision flow；73, No. two regulating valves；8, liquid back pipe
Road；9, medium-type atomizer；10, atomization conduit；11, pipeline is purged；12, injection apparatus；13, two-fluid spray nozzle；14, two-fluid
Pipeline；15,SO3Detector；16, flue；17, Backwash pipeline；18, temperature sensor.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
SO in a kind of flue gas shown in FIG. 13Removing system, including fluid reservoir 1, the bosom of fluid reservoir 1 be provided with
Blender 2, the inner top side of fluid reservoir 1, lower end are separately provided for the liquidometer 3 of measurement lye capacity, for measuring alkali
The densitometer 4 of liquid concentration.The front end of fluid reservoir 1 is provided with mixed flow container, and lye is delivered to storage after the completion of configuration in mixed flow container again
In flow container 1.
The system further includes lye heating system, alkali liquor circulating system, atomization spray system；
Lye heating system includes heat medium pipeline 5, and the input terminal of heat medium pipeline 5 is provided with No.1 regulating valve
51.Heat medium pipeline 5 spirals still further below after penetrating from the upper end of fluid reservoir 1 to be extended and stretches out from the lower end of fluid reservoir 1；Heating
The input of medium pipeline 5, output end are connected with medium heating device, constitute soft circulation circuit；It is set on the inner wall of fluid reservoir 1
It is equipped with temperature sensor 18.When the alkali liquid temperature in fluid reservoir 1 is lower than setting value, starting lye heating system carries out lye
Heating, prevents lye from crystallizing.
Alkali liquor circulating system includes liquid-transport pipe-line 7, back liquid pipeline 8；The front end of liquid-transport pipe-line 7 is communicated with fluid reservoir 1, rear end
It is connected by two-fluid pipeline 14 with injection apparatus 12；Variable frequency pump 71 is provided on liquid-transport pipe-line 7；One end of back liquid pipeline 8
It is connected to the rear end of liquid-transport pipe-line 7, the other end is communicated with fluid reservoir 1；Alkali liquor circulating system guarantees system by the way of circulation
The stabilization of pressure prevents pressure imbalance caused by impacting because of lye system when opening more injection pipes in succession.
Injection apparatus 12 is made of more injection pipes, and multiple two-fluid spray nozzles 13 are provided on every injection pipe,
As shown in Figure 2；The input terminal of injection apparatus 12 is provided with medium-type atomizer 9, and the output channel of medium-type atomizer 9 is to issuing
Chu Liangtiao branch, Liang Tiao branch are respectively atomization conduit 10, purging pipeline 11；Atomization conduit 10 extends downwardly rear and two-fluid pipe
Road 14 is connected；Purging pipeline 11 is directly connected with injection apparatus 12 after extending downwardly.The medium that medium-type atomizer 9 sprays
The lye sprayed with liquid-transport pipe-line 7 reaches atomization by being sprayed after two-fluid pipeline 14 from two-fluid spray nozzle 13, improve and
SO3Reaction efficiency.
The liquid-transport pipe-line 7 of 71 front end of variable frequency pump is connected with Backwash pipeline 17, the input terminal setting of Backwash pipeline 17
There is back purge system 6.When system shutdown or occur Crystallization Plugging when, by Backwash pipeline 17 with clear water rinse whole system with
And injection apparatus 12, to release crystallization and prevent lye corrosion caused by pipeline.
The input terminal of back liquid pipeline 8 is provided with No. two regulating valves 73.On the liquid-transport pipe-line 7 of 71 rear end of variable frequency pump, No. two tune
It saves and is provided with high precision flow 72 on the back liquid pipeline 8 of 73 front end of valve.
Injection apparatus 12 is set in flue 16, is fixedly installed SO above injection apparatus 12, in the flue of lower section3Inspection
Device 15 is surveyed, for detecting the SO before and after sulphur removal respectively3Content, to compare the using effect of this system.
SO in a kind of flue gas3Removing system application method, operating process are as follows:
A, lye is configured by demineralized water in mixed flow container, lye is delivered in fluid reservoir 1 after configuration is complete；
B, when alkali liquid temperature be lower than setting value when, open No.1 regulating valve 51, into heat medium pipeline 5 convey steam or
Hot water；With lye heat exchange can occur for steam or hot water after entering in fluid reservoir 1, to make lye reach set temperature and prevent
Only it is crystallized；
C, the lye for reaching temperature requirement controls its amount of injection in liquid-transport pipe-line 7 by variable frequency pump 71, and passes through height
Accuracy Flow Meter 72 carries out flow monitoring；
D, on the one hand the lye exported from liquid-transport pipe-line 7 is ejected by injection apparatus 12, in flue 16
SO3Gas mixing reaction, is on the other hand back in fluid reservoir 1 by back liquid pipeline 8, and circulation loop is constituted, and is being opened with stabilization
The pressure imbalance caused by system when opening more injection pipes；
E, when lye is conveyed by liquid-transport pipe-line 7 into injection apparatus 12, while medium-type atomizer 9 is opened,
It sprays medium at a high speed into injection apparatus 12 by atomization conduit 10, and lye impingement mix and is dispelled and reach atomization,
To be conducive to being sufficiently mixed for lye and flue gas, guarantee lye and SO3Reaction rate；After every subsystem has been run, it can lead to
It crosses unlatching purging pipeline 11 to purge injection apparatus 12, avoids lye crystallization and plug nozzle；
F, when system shutdown or generation Crystallization Plugging, pass through Backwash pipeline 17 with clear water and rinse whole system and spray
Injection device 12, to release crystallization and prevent lye corrosion caused by pipeline.
Compared with prior art, the present invention having the advantage that
1) injection apparatus uses medium atomization, can make the SO in lye and flue gas3It is sufficiently mixed uniformly and accelerates reaction effect
Rate reaches SO in removing flue gas3Purpose；
2) it is provided with alkali liquor circulating system, to stablize the stability that system is run when opening more injection pipes, balance
The surge caused by system when increasing flux of alkaline liquor；
3) realize that the flow control of lye facilitates control with systems stabilisation pressure by high precision flow and variable frequency pump
System；
4) lye heating system and blender are provided with, lye can be effectively prevent crystallize due to cooling, improve lye and
SO3Mixed effect and prevent crystallization choke system；
5) it is provided with back purge system, it can be by Backwash pipeline to entire system in system shutdown or generation Crystallization Plugging
System and injection apparatus are rinsed；
6) system structure setting is scientific and reasonable, and succeeded demonstration operation, it was demonstrated that system stability is good, and in flue gas
SO3Removal effect it is good, be suitable for large-scale promotion application.
Above embodiment is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the scope of technical solution of the present invention, also belong to this hair
Bright protection scope.
Claims (10)
1. SO in a kind of flue gas3Removing system, including fluid reservoir (1), the bosom of fluid reservoir (1) be provided with blender
(2), it is characterised in that: further include lye heating system, alkali liquor circulating system, atomization spray system；
The lye heating system includes heat medium pipeline (5), and heat medium pipeline (5) is penetrated from the upper end of fluid reservoir (1)
It spirals still further below afterwards and extends and stretched out from the lower end of fluid reservoir (1)；The input of heat medium pipeline (5), output end are and medium
Heating device is connected, and constitutes soft circulation circuit；
The alkali liquor circulating system includes liquid-transport pipe-line (7), back liquid pipeline (8)；The front end of the liquid-transport pipe-line (7) and fluid reservoir
(1) it communicates, rear end is connected by two-fluid pipeline (14) with injection apparatus (12)；Change is provided on the liquid-transport pipe-line (7)
Frequency pump (71)；One end of the back liquid pipeline (8) is connected to the rear end of liquid-transport pipe-line (7), and the other end is communicated with fluid reservoir (1)；
The injection apparatus (12) is made of more injection pipes, and multiple two-fluid spray nozzles are provided on every injection pipe
(13)；The input terminal of the injection apparatus (12) is provided with medium-type atomizer (9), the output channel of medium-type atomizer (9)
Liang Tiao branch is issued downwards, and Liang Tiao branch is respectively atomization conduit (10), purging pipeline (11)；The atomization conduit (10) is downward
It is connected after extension with two-fluid pipeline (14)；The purging pipeline (11) is directly connected with injection apparatus (12) after extending downwardly
It is logical.
2. SO in flue gas according to claim 13Removing system, it is characterised in that: variable frequency pump (71) front end it is defeated
Liquid pipe road (7) is connected with Backwash pipeline (17), and the input terminal of Backwash pipeline (17) is provided with back purge system (6).
3. SO in flue gas according to claim 23Removing system, it is characterised in that: the heat medium pipeline (5)
Input terminal is provided with No.1 regulating valve (51).
4. SO in flue gas according to claim 33Removing system, it is characterised in that: the input of the back liquid pipeline (8)
End is provided with No. two regulating valves (73).
5. SO in flue gas according to claim 43Removing system, it is characterised in that: variable frequency pump (71) rear end it is defeated
High precision flow (72) are provided on liquid pipe road (7), on the back liquid pipeline (8) of No. two regulating valve (73) front ends.
6. SO in flue gas according to claim 53Removing system, it is characterised in that: on the inside of the fluid reservoir (1)
End, lower end are respectively arranged with liquidometer (3), densitometer (4).
7. SO in flue gas according to claim 63Removing system, it is characterised in that: the front end of the fluid reservoir (1) is set
It is equipped with mixed flow container, lye is delivered in fluid reservoir (1) again after the completion of configuration in mixed flow container.
8. SO in flue gas according to claim 73Removing system, it is characterised in that: the injection apparatus (12) is set to
In flue (16), SO is fixedly installed above injection apparatus (12), in the flue of lower section3Detector (15).
9. SO in flue gas according to claim 83Removing system, it is characterised in that: on the inner wall of the fluid reservoir (1)
It is provided with temperature sensor (18).
10. SO in a kind of flue gas as claimed in claim 93Removing system application method, it is characterised in that: the method
Operating process are as follows:
A, lye is configured by demineralized water in mixed flow container, lye is delivered in fluid reservoir (1) after configuration is complete；
B, when alkali liquid temperature is lower than setting value, No.1 regulating valve (51) are opened, to conveying steam in heat medium pipeline (5) or
Hot water；With lye heat exchange can occur for steam or hot water after entering in fluid reservoir (1), so that lye be made to reach set temperature simultaneously
Prevent its crystallization；
C, the lye for reaching temperature requirement controls its amount of injection in liquid-transport pipe-line (7) by variable frequency pump (71), and passes through height
Accuracy Flow Meter (72) carries out flow monitoring；
D, on the one hand the lye exported from liquid-transport pipe-line (7) is ejected by injection apparatus (12), in flue (16)
SO3Gas mixing reaction, is on the other hand back in fluid reservoir (1) by back liquid pipeline (8), circulation loop is constituted, with stabilization
The pressure imbalance caused by system when opening more injection pipes；
E, when lye is conveyed by liquid-transport pipe-line (7) in injection apparatus (12), while medium-type atomizer is opened
(9), medium is reached, into injection apparatus (12), with lye impingement mix and being dispelled by the injection of atomization conduit (10) high speed
To atomization, to be conducive to being sufficiently mixed for lye and flue gas, guarantee lye and SO3Reaction rate；Every subsystem has run it
Afterwards, injection apparatus (12) can be purged by opening purging pipeline (11), avoids lye crystallization and plug nozzle；
F, when system shutdown or generation Crystallization Plugging, pass through Backwash pipeline (17) with clear water and rinse whole system and injection
Device (12), to release crystallization and prevent lye corrosion caused by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023627.3A CN109107369A (en) | 2018-09-04 | 2018-09-04 | SO in a kind of flue gas3Removing system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023627.3A CN109107369A (en) | 2018-09-04 | 2018-09-04 | SO in a kind of flue gas3Removing system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109107369A true CN109107369A (en) | 2019-01-01 |
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ID=64861873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811023627.3A Pending CN109107369A (en) | 2018-09-04 | 2018-09-04 | SO in a kind of flue gas3Removing system and method |
Country Status (1)
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| CN (1) | CN109107369A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170391A (en) * | 2019-06-26 | 2019-08-27 | 无锡市东方环境工程设计研究所有限公司 | A kind of modified form SDA atomiser system |
| CN114011227A (en) * | 2021-11-09 | 2022-02-08 | 浙江浙能迈领环境科技有限公司 | Efficient anti-blocking ship mixed desulfurization method, system and application |
| CN115738630A (en) * | 2022-11-29 | 2023-03-07 | 重庆凯杰林环保工程有限公司 | Waste gas cooling and desulfurizing system and method |
-
2018
- 2018-09-04 CN CN201811023627.3A patent/CN109107369A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170391A (en) * | 2019-06-26 | 2019-08-27 | 无锡市东方环境工程设计研究所有限公司 | A kind of modified form SDA atomiser system |
| CN114011227A (en) * | 2021-11-09 | 2022-02-08 | 浙江浙能迈领环境科技有限公司 | Efficient anti-blocking ship mixed desulfurization method, system and application |
| CN115738630A (en) * | 2022-11-29 | 2023-03-07 | 重庆凯杰林环保工程有限公司 | Waste gas cooling and desulfurizing system and method |
| CN115738630B (en) * | 2022-11-29 | 2024-05-10 | 重庆凯杰林环保工程有限公司 | System and method for cooling and desulfurizing waste gas |
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Effective date of registration: 20200529 Address after: 013755 Basumu village, liusumu Township, Liangcheng County, Wulanchabu City, Inner Mongolia Autonomous Region Applicant after: INNER MONGOLIA DAIHAI ELECTRIC POWER GENERATION Co.,Ltd. Applicant after: BEIJING HUIFENGRENHE TECHNOLOGY SHARE Co.,Ltd. Applicant after: JIANGSU HUIFENG RENHE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 100055 Beijing Fengtai District Guang'an Road 9 Guotou Fortune 5 Building 318 Applicant before: BEIJING HUIFENGRENHE TECHNOLOGY SHARE Co.,Ltd. Applicant before: JIANGSU HUIFENG RENHE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |