CN206281687U - The sample collection device of SO3 in a kind of flue gas - Google Patents
The sample collection device of SO3 in a kind of flue gas Download PDFInfo
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- CN206281687U CN206281687U CN201621273650.4U CN201621273650U CN206281687U CN 206281687 U CN206281687 U CN 206281687U CN 201621273650 U CN201621273650 U CN 201621273650U CN 206281687 U CN206281687 U CN 206281687U
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Abstract
SO in a kind of flue gas3Sample collection device, belong to flue gas sampling technical field.Technical scheme includes tail gas flue, sampling gun, smoke filter, SO3Absorber, SO2Absorber etc.；The front end of sampling gun is fixedly connected with the thief hole of tail gas flue；The end of sampling gun is connected with the import of smoke filter；The outlet of smoke filter and SO3The import of absorber is connected through breather line；SO3The outlet of absorber and SO2The import connection of absorber；SO2The outlet of absorber is connected with the import of drier；The outlet of drier is connected with the import of gas flowmeter；The outlet of gas flowmeter is connected with the import of vavuum pump through breather line；Thermometer and pressure gauge are located on the breather line between gas flowmeter and vavuum pump.The utility model has easy to operate, measuring accuracy high, can avoid SO2Influence to measuring accuracy；Avoid the advantage of the etching problem to the controls such as sampling apparatus follow-up equipment vavuum pump and gas flowmeter, measurement monitoring equipment.
Description
Technical field
The utility model belongs to flue gas sampling technical field, and in particular to SO in a kind of flue gas3Sample collection device.
Background technology
SO3It is a small amount of a kind of pollutant for existing in coal fired power plant flue gas, but its presence not only can be normally steady to power station
Fixed operation produces potential threat, also can produce severe contamination to atmospheric environment, and it is the arch-criminal of power plant's blue smoke, tobacco.SO3
Toxicity be SO2Ten times, easily combine to form H with water2SO4Acid mist, this acid mist can produce heavy damage to human respiratory,
It is also the direct sources of acid rain.Additionally, SO in flue gas3Concentration increases, and the corrosion of the equipment such as air downstream preheater can be caused to ask
Topic, it is also possible to and NH3Reaction generation NH42SO4And NH4HSO4, cause inactivation of SCR denitration etc..
At present, China has respective standard to define the emission limit of sulfuric acid mist, but for SO in coal-fired plant flue gas3Discharge
Standard there is no to require, SO in research flue gas3Sample collection and measuring technology be targetedly to take efficient SO3Control measure
Premise.SO at this stage3Sampling techniques mainly have condensation method and an absorption process, wherein condensation method needs accurate control condensation process
In temperature, difficulty is big for control, error is high；Absorption process is in SO high2When area tests, it is impossible to be prevented effectively from SO2To sampling follow-up equipment
The etching problem for bringing, device service life is limited.Therefore research and development are a kind of easy to operate, and measuring accuracy is high, it is to avoid SO2It is right
Measuring accuracy influences, can be in high temperature, dust high, SO high2Under the conditions of to SO3Sample collection is carried out, and avoids corroding follow-up equipment
Flue gas SO3Sample collection device is significant.
Utility model content
The purpose of this utility model is directed to SO in current flue gas3Sampling apparatus control difficulty it is big, test error is high, essence
Degree is low, in SO high2When area tests, it is impossible to be prevented effectively from SO2To the etching problem of follow-up equipment of sampling, device service life is limited
The problems such as and SO in a kind of flue gas is provided3Sample collection device.
In order to solve the above technical problems, the technical scheme that is used of the utility model for：SO in a kind of flue gas3Sampling receive
Acquisition means, wherein：Including tail gas flue, sampling gun, smoke filter, SO3Absorber, SO2Absorber, drier, gas flow
Meter, thermometer, pressure gauge and vavuum pump；The front end of described sampling gun is fixedly connected with the thief hole of tail gas flue through flange；
The end of described sampling gun is connected with the import of smoke filter through breather line；The outlet of described smoke filter with
SO3The import of absorber is connected through breather line；Described SO3The outlet of absorber and SO2The import of absorber is through breather line
Connection；Described SO2The outlet of absorber is connected with the import of drier through breather line；The outlet of described drier and gas
The import of flowmeter body is connected through breather line；The outlet of described gas flowmeter connects with the import of vavuum pump through breather line
Connect；Described thermometer and pressure gauge is arranged on the breather line between gas flowmeter and vavuum pump by breather line.
Further preferred scheme, described sampling gun is filtered and heat tracing function to carry, and can as needed to heat tracing temperature
Degree is adjusted sampling gun.
Compared with prior art, the utility model has easy to operate, measuring accuracy high, can avoid SO2To measuring accuracy
Influence；When device is in high temperature, dust high or SO high2Under the conditions of to SO3When carrying out sample collection, can also avoid to sampling apparatus
The advantages of control such as follow-up equipment vavuum pump and gas flowmeter, etching problem of measurement monitoring equipment.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
As shown in figure 1, SO in a kind of flue gas of the present embodiment3Sample collection device, wherein：Including tail gas flue 1, sampling
Rifle 2, smoke filter 3, SO3Absorber 4, SO2Absorber 5, drier 6, gas flowmeter 7, thermometer 8, pressure gauge 9 and true
Empty pump 10；The front end of described sampling gun 2 is fixedly connected with the thief hole of tail gas flue 1 through flange；The end of described sampling gun 2
End is connected with the import of smoke filter 3 through breather line；The outlet of described smoke filter 3 and SO3The import of absorber 4
Connected through breather line；Described SO3The outlet of absorber 4 and SO2The import of absorber 5 is connected through breather line；Described
SO2The outlet of absorber 5 is connected with the import of drier 6 through breather line；The outlet of described drier 6 and gas flowmeter
7 import is connected through breather line；The outlet of described gas flowmeter 7 is connected with the import of vavuum pump 10 through breather line；
Described thermometer 8 and pressure gauge 9 is arranged on the breather line between gas flowmeter 7 and vavuum pump 10 by breather line
On.
Sampling gun 2 described in the present embodiment can enter to heat tracing temperature as needed to carry filtering and heat tracing function
Row adjustment sampling gun.
SO in a kind of flue gas described in the present embodiment3Sample collection device in sample collection process be：By sampling gun 2
Front end is fixedly connected with the thieff hatch of tail gas flue 1, and package unit is sequentially connected fixes；Vavuum pump 10 is opened, is passed through
The suction force of vavuum pump 10, the flue gas of tail gas flue 1 through smoke filter 3 by removing dust, cigarette again after the pretreatment of sampling gun 2
Gas is by SO3Absorber 4 is by SO in flue gas3Collect, by SO2Absorber 5 is by SO2Collect, last flue gas is dried through drier 6
Moisture, gas flowmeter 7, thermometer 8 and pressure gauge 9 record sampling exhaust gas volumn, temperature and pressure are removed, SO in flue gas is completed3
Sample collection.
Claims (2)
1. SO in a kind of flue gas3Sample collection device, it is characterized in that：Including tail gas flue (1), sampling gun (2), filtrating smoke dust
Device (3), SO3Absorber (4), SO2Absorber (5), drier (6), gas flowmeter (7), thermometer (8), pressure gauge (9) and
Vavuum pump (10)；The front end of described sampling gun (2) is fixedly connected with the thief hole of tail gas flue (1) through flange；Described adopts
The end of sample rifle (2) is connected with the import of smoke filter (3) through breather line；The outlet of described smoke filter (3) with
SO3The import of absorber (4) is connected through breather line；Described SO3The outlet of absorber (4) and SO2The import of absorber (5)
Connected through breather line；Described SO2The outlet of absorber (5) is connected with the import of drier (6) through breather line；Described
The outlet of drier (6) is connected with the import of gas flowmeter (7) through breather line；The outlet of described gas flowmeter (7)
Import with vavuum pump (10) is connected through breather line；Described thermometer (8) and pressure gauge (9) is arranged on by breather line
On breather line between gas flowmeter (7) and vavuum pump (10).
2. SO in a kind of flue gas according to claim 13Sample collection device, it is characterized in that：Described sampling gun (2)
To carry filtering and heat tracing function, and sampling gun can be adjusted to heat tracing temperature as needed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621273650.4U CN206281687U (en) | 2016-11-24 | 2016-11-24 | The sample collection device of SO3 in a kind of flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621273650.4U CN206281687U (en) | 2016-11-24 | 2016-11-24 | The sample collection device of SO3 in a kind of flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206281687U true CN206281687U (en) | 2017-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621273650.4U Active CN206281687U (en) | 2016-11-24 | 2016-11-24 | The sample collection device of SO3 in a kind of flue gas |
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| CN (1) | CN206281687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303293A (en) * | 2018-02-09 | 2018-07-20 | 华能国际电力股份有限公司 | The sampling of sulfur trioxide and detecting system and method in a kind of fire coal boiler fume |
-
2016
- 2016-11-24 CN CN201621273650.4U patent/CN206281687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303293A (en) * | 2018-02-09 | 2018-07-20 | 华能国际电力股份有限公司 | The sampling of sulfur trioxide and detecting system and method in a kind of fire coal boiler fume |
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