CN109738487A - SO in a kind of flue gas3On-line measurement system and method - Google Patents
SO in a kind of flue gas3On-line measurement system and method Download PDFInfo
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- CN109738487A CN109738487A CN201910135495.1A CN201910135495A CN109738487A CN 109738487 A CN109738487 A CN 109738487A CN 201910135495 A CN201910135495 A CN 201910135495A CN 109738487 A CN109738487 A CN 109738487A
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- flue gas
- absorbing liquid
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- flue
- outlet
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- 238000005259 measurement Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 95
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 79
- 238000005070 sampling Methods 0.000 claims abstract description 43
- 238000002848 electrochemical method Methods 0.000 claims abstract description 33
- 238000007664 blowing Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000011897 real-time detection Methods 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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Abstract
The invention discloses SO in a kind of flue gas3On-line measurement system and method, the thief hatch of heat tracing sampling apparatus is inserted in flue, the outlet of heat tracing sampling apparatus is connected with the entrance of electrochemical measurement system, the exhanst gas outlet of electrochemical measurement system is connected through flue gas flow measuring device with the entrance of flue gas suction pump, the outlet of flue gas suction pump is connected with the smoke inlet on flue wall surface, the absorbing liquid outlet of electrochemical measurement system is connected through absorbing liquid flow measurement device with the entrance of absorbing liquid delivery pump, the outlet of absorbing liquid delivery pump is divided into two-way, wherein it is connected all the way with absorbing liquid recyclable device, another way is connected with the entrance of absorbing liquid atomising device；The control terminal of heat tracing sampling apparatus, control terminal, the output end of absorbing liquid flow measurement device and the output end of flue gas flow measuring device for filtering back-blowing device are connected with controller, which can in real time, accurately measure SO in flue gas3Concentration.
Description
Technical field
The invention belongs to flue gas pollutant field of measuring technique, it is related to SO in a kind of flue gas3On-line measurement system and method.
Background technique
With NOx, SO in flue gas2And the implementation of flue dust minimum discharge, SO in flue gas3Emission problem increasingly become coke
Point problem.SO in flue gas3Traditional measurement method first by SO3It collects, then passes through the SO in manual measurement collection liquid3Content reaches
To measurement purpose, however, traditional measurement method timeliness is poor, and the artificial link of traditional measurement method is more, is easy to cause error,
Measurement result repeatability and reproducibility are poor.In addition, SO in flue gas3Content is low, and the test data of each measurement links is surveyed to final
Measuring result influences greatly, to guarantee that precision, measurement process require stringent.Since these objective factors are deposited during actual measurement
In, traditional measurement method it is difficult to ensure that SO in flue gas3The measurement accuracy of concentration.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, SO in a kind of flue gas is provided3On-line measurement system
System and method, the system and method can in real time, accurately measure SO in flue gas3Concentration.
In order to achieve the above objectives, SO in flue gas of the present invention3On-line measurement system includes heat tracing sampling apparatus, electrification
Learn measuring system, through absorbing liquid flow measurement device, flue gas flow measuring device, flue gas suction pump, absorbing liquid delivery pump, absorption
Liquid recyclable device and the absorbing liquid atomising device being set in flue；
The thief hatch of heat tracing sampling apparatus is inserted in flue, the outlet of heat tracing sampling apparatus and electrochemical measurement system
Entrance is connected, and the exhanst gas outlet of electrochemical measurement system is connected through flue gas flow measuring device with the entrance of flue gas suction pump
Logical, the outlet of flue gas suction pump is connected with the smoke inlet on flue wall surface, and the absorbing liquid of electrochemical measurement system exports warp
Absorbing liquid flow measurement device is connected with the entrance of absorbing liquid delivery pump, and the outlet of absorbing liquid delivery pump is divided into two-way, wherein
It is connected all the way with absorbing liquid recyclable device, another way is connected with the entrance of absorbing liquid atomising device；
The control terminal of heat tracing sampling apparatus, the control terminal for filtering back-blowing device, absorbing liquid flow measurement device output end
And the output end of flue gas flow measuring device is connected with controller.
The outlet of heat tracing sampling apparatus is connected through filtering back-blowing device with the entrance of electrochemical measurement system.
Controller is also connected with display device and data communication interface.
It is connected between heat tracing sampling apparatus and filtering back-blowing device by the first sampling pipe, filtering back-blowing device and electrification
It learns and is connected between measuring system by the second sampling pipe.
Heating device for heating is provided on first sampling pipe and the second sampling pipe.
It further include blowback gas source and purge gas pipeline, wherein the outlet of blowback gas source is through purge gas pipeline and mistake
The purge gas entrance of filter back-blowing device is connected.
SO in flue gas of the present invention3On-line Measuring Method the following steps are included:
Heat tracing sampling apparatus acquires the flue gas sample in flue, and the flue gas sample is delivered to electrochemical measurement system
In, electrochemical measurement system is by absorbing liquid to the SO in flue gas3It is absorbed, the absorbing liquid warp of electrochemical measurement system output
Absorbing liquid flow measurement device and absorbing liquid delivery pump are divided into two-way, wherein entered in absorbing liquid recyclable device all the way, it is another
Road is injected in flue through absorbing liquid atomising device；The flue gas sample of electrochemical measurement system output is through flue gas flow measuring device
And flue gas suction pump is delivered in flue, wherein absorbing liquid flow measurement device real-time detection absorbs the SO in flue gas sample3Institute
The flow information of absorbing liquid is consumed, and the SO in flue gas sample will be absorbed3The flow information of consumed absorbing liquid is sent to control
In device, while being sent out by the flow information of flue gas flow measuring device detection flue gas sample, and by the flow information of flue gas sample
It send into controller, controller is according to the SO in the flow information and absorption flue gas sample of flue gas sample3Consumed absorbing liquid
Flow information calculates SO in flue gas sample3Concentration.
The invention has the following advantages:
SO in flue gas of the present invention3On-line measurement system and method pass through heat tracing sampling apparatus when specific operation
Flue gas sample is acquired from flue, and the SO in flue gas sample is absorbed by absorbing liquid flow measurement device real-time detection3It is consumed
The flow information of absorbing liquid, and then SO in flue gas is calculated by controller3Concentration, timeliness and accuracy are higher, and
And it is not necessarily to manpower intervention, save human cost.In addition, the flue gas after being measured is returned into flue, absorb in flue gas
SO3Consumed absorbing liquid is then emitted into flue or is collected by absorbing liquid recyclable device, avoids flue gas after measurement
And the secondary environmental pollution that absorbing liquid generates.
Further, it is connected between heat tracing sampling apparatus and filtering back-blowing device by the first sampling pipe in the present invention, mistake
It is connected between filter back-blowing device and electrochemical measurement system by the second sampling pipe, on the first sampling pipe and the second sampling pipe
It is provided with heating device for heating, avoids sulfureous in flue gas acid vapor from condensing and block pipeline, so as to cause to measurement result
Influence.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 be heat tracing sampling apparatus, 2 be filtering back-blowing device, 3 be electrochemical measurement system, 4 be absorb flow quantity
Measuring device, 5 be absorbing liquid delivery pump, 6 be flue gas flow measuring device, 7 be flue gas suction pump, 8 be controller, 9 be display
Device, 10 be absorbing liquid atomising device, 11 be absorbing liquid recyclable device, 12 be data communication interface.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, SO in flue gas of the present invention3On-line measurement system includes heat tracing sampling apparatus 1, electrochemical measurement
System 3, through absorbing liquid flow measurement device 4, flue gas flow measuring device 6, flue gas suction pump 7, absorbing liquid delivery pump 5, absorb
Liquid recyclable device 11 and the absorbing liquid atomising device 10 being set in flue；The thief hatch of heat tracing sampling apparatus 1 is inserted in flue
Interior, the outlet of heat tracing sampling apparatus 1 is connected with the entrance of electrochemical measurement system 3, the exhanst gas outlet of electrochemical measurement system 3
It is connected through flue gas flow measuring device 6 with the entrance of flue gas suction pump 7, in the outlet of flue gas suction pump 7 and flue wall surface
Smoke inlet is connected, and the absorbing liquid of electrochemical measurement system 3 is exported through absorbing liquid flow measurement device 4 and absorbing liquid delivery pump
5 entrance is connected, and the outlet of absorbing liquid delivery pump 5 is divided into two-way, wherein being connected all the way with absorbing liquid recyclable device 11, separately
It is connected all the way with the entrance of absorbing liquid atomising device 10；The control terminal of heat tracing sampling apparatus 1, the control for filtering back-blowing device 2
The output end at end, the output end of absorbing liquid flow measurement device 4 and flue gas flow measuring device 6 is connected with controller 8.
The outlet of heat tracing sampling apparatus 1 is connected through filtering back-blowing device 2 with the entrance of electrochemical measurement system 3；Control
Device 8 is also connected with display device 9 and data communication interface 12.
Be connected between heat tracing sampling apparatus 1 and filtering back-blowing device 2 by the first sampling pipe, filter back-blowing device 2 and
It is connected between electrochemical measurement system 3 by the second sampling pipe；It is provided with and is used on first sampling pipe and the second sampling pipe
The heating device of heating.
The invention also includes blowback gas source and purge gas pipelines, wherein the outlet of blowback gas source is through purge gas pipe
Road is connected with the purge gas entrance of filtering back-blowing device 2.
SO in flue gas of the present invention3On-line Measuring Method the following steps are included:
Heat tracing sampling apparatus 1 acquires the flue gas sample in flue, and the flue gas sample is delivered to electrochemical measurement system
In system 3, electrochemical measurement system 3 is by absorbing liquid to the SO in flue gas3It is absorbed, the suction that electrochemical measurement system 3 exports
It receives liquid to divide through absorbing liquid flow measurement device 4 and absorbing liquid delivery pump 5 for two-way, wherein entering absorbing liquid recyclable device all the way
In 11, another way is injected in flue through absorbing liquid atomising device 10；The flue gas sample that electrochemical measurement system 3 exports is through flue gas
Flow measurement device 6 and flue gas suction pump 7 are delivered in flue, wherein 4 real-time detection of absorbing liquid flow measurement device absorbs cigarette
SO in gas sample sheet3The flow information of consumed absorbing liquid, and the SO in flue gas sample will be absorbed3The flow of consumed absorbing liquid
Information is sent in controller 8, while the flow information of flue gas sample is detected by flue gas flow measuring device 6, and by flue gas
The flow information of sample is sent in controller 8, and controller 8 is according in the flow information and absorption flue gas sample of flue gas sample
SO3The flow information of consumed absorbing liquid calculates SO in flue gas sample3Concentration.
In addition, passing through 9 real-time display SO of display device3Concentration, and pass through data communication interface 12 for SO3Concentration is sent to
In external equipment.
Claims (7)
1. SO in a kind of flue gas3On-line measurement system, which is characterized in that including heat tracing sampling apparatus (1), electrochemical measurement system
(3), through absorbing liquid flow measurement device (4), flue gas flow measuring device (6), flue gas suction pump (7), absorbing liquid delivery pump
(5), absorbing liquid recyclable device (11) and the absorbing liquid atomising device (10) being set in flue；
The thief hatch of heat tracing sampling apparatus (1) is inserted in flue, the outlet and electrochemical measurement system of heat tracing sampling apparatus (1)
(3) entrance is connected, and the exhanst gas outlet of electrochemical measurement system (3) is through flue gas flow measuring device (6) and flue gas suction pump
(7) entrance is connected, and the outlet of flue gas suction pump (7) is connected with the smoke inlet on flue wall surface, electrochemical measurement system
The absorbing liquid outlet of system (3) is connected through absorbing liquid flow measurement device (4) with the entrance of absorbing liquid delivery pump (5), absorbing liquid
The outlet of delivery pump (5) is divided into two-way, wherein being connected all the way with absorbing liquid recyclable device (11), another way and absorbing liquid are atomized
The entrance of device (10) is connected；
The control terminal of heat tracing sampling apparatus (1), the control terminal for filtering back-blowing device (2), absorbing liquid flow measurement device (4) it is defeated
The output end of outlet and flue gas flow measuring device (6) is connected with controller (8).
2. SO in flue gas according to claim 13On-line measurement system, which is characterized in that heat tracing sampling apparatus (1) goes out
Mouth is connected through filtering back-blowing device (2) with the entrance of electrochemical measurement system (3).
3. SO in flue gas according to claim 13On-line measurement system, which is characterized in that controller (8) is also connected with aobvious
Showing device (9) and data communication interface (12).
4. SO in flue gas according to claim 23On-line measurement system, which is characterized in that heat tracing sampling apparatus (1) and mistake
It is connected between filter back-blowing device (2) by the first sampling pipe, is filtered between back-blowing device (2) and electrochemical measurement system (3)
It is connected by the second sampling pipe.
5. SO in flue gas according to claim 43On-line measurement system, which is characterized in that the first sampling pipe and the second sampling
Heating device for heating is provided on pipe.
6. SO in flue gas according to claim 23On-line measurement system, which is characterized in that further include blowback gas source and anti-
Blowing pipeline, wherein purge gas entrance phase of the outlet of blowback gas source through purge gas pipeline with filtering back-blowing device (2)
Connection.
7. SO in a kind of flue gas3On-line Measuring Method, which is characterized in that based on SO in flue gas described in claim 13It is online to survey
Amount system, comprising the following steps:
Heat tracing sampling apparatus (1) acquires the flue gas sample in flue, and the flue gas sample is delivered to electrochemical measurement system
(3) in, electrochemical measurement system (3) is by absorbing liquid to the SO in flue gas3It is absorbed, electrochemical measurement system (3) output
Absorbing liquid be divided into two-way through absorbing liquid flow measurement device (4) and absorbing liquid delivery pump (5), wherein entering absorbing liquid all the way
In recyclable device (11), another way is injected in flue through absorbing liquid atomising device (10)；Electrochemical measurement system (3) output
Flue gas sample is delivered in flue through flue gas flow measuring device (6) and flue gas suction pump (7), wherein absorbing liquid flow measurement
Device (4) real-time detection absorbs the SO in flue gas sample3The flow information of consumed absorbing liquid, and will absorb in flue gas sample
SO3The flow information of consumed absorbing liquid is sent in controller (8), while detecting cigarette by flue gas flow measuring device (6)
The flow information of gas sample sheet, and the flow information of flue gas sample is sent in controller (8), controller (8) is according to flue gas sample
SO in this flow information and absorption flue gas sample3The flow information of consumed absorbing liquid calculates SO in flue gas sample3It is dense
Degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135495.1A CN109738487A (en) | 2019-02-22 | 2019-02-22 | SO in a kind of flue gas3On-line measurement system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135495.1A CN109738487A (en) | 2019-02-22 | 2019-02-22 | SO in a kind of flue gas3On-line measurement system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109738487A true CN109738487A (en) | 2019-05-10 |
Family
ID=66368103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910135495.1A Pending CN109738487A (en) | 2019-02-22 | 2019-02-22 | SO in a kind of flue gas3On-line measurement system and method |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766341A (en) * | 2020-07-07 | 2020-10-13 | 西安热工研究院有限公司 | Correction method for sulfur trioxide concentration test in industrial waste gas |
| WO2022083174A1 (en) * | 2020-10-21 | 2022-04-28 | 西安西热锅炉环保工程有限公司 | Online measurement system and method for hcl in flue gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027546A1 (en) * | 2013-08-27 | 2015-03-05 | 浙江大学 | Online detection device and method for sulfur trioxide contained in flue gas |
| CN107843464A (en) * | 2017-12-01 | 2018-03-27 | 西安交通大学 | The SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional and method |
| CN109254124A (en) * | 2018-10-31 | 2019-01-22 | 华能国际电力股份有限公司 | A kind of SO3Concentration on-line measuring device and method |
| CN209589905U (en) * | 2019-02-22 | 2019-11-05 | 西安西热锅炉环保工程有限公司 | SO in a kind of flue gas3On-line measurement system |
-
2019
- 2019-02-22 CN CN201910135495.1A patent/CN109738487A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027546A1 (en) * | 2013-08-27 | 2015-03-05 | 浙江大学 | Online detection device and method for sulfur trioxide contained in flue gas |
| CN107843464A (en) * | 2017-12-01 | 2018-03-27 | 西安交通大学 | The SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional and method |
| CN109254124A (en) * | 2018-10-31 | 2019-01-22 | 华能国际电力股份有限公司 | A kind of SO3Concentration on-line measuring device and method |
| CN209589905U (en) * | 2019-02-22 | 2019-11-05 | 西安西热锅炉环保工程有限公司 | SO in a kind of flue gas3On-line measurement system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766341A (en) * | 2020-07-07 | 2020-10-13 | 西安热工研究院有限公司 | Correction method for sulfur trioxide concentration test in industrial waste gas |
| CN111766341B (en) * | 2020-07-07 | 2023-04-25 | 西安热工研究院有限公司 | Correction method for sulfur trioxide concentration test in industrial waste gas |
| WO2022083174A1 (en) * | 2020-10-21 | 2022-04-28 | 西安西热锅炉环保工程有限公司 | Online measurement system and method for hcl in flue gas |
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