CN206038382U - Sulfur trioxide's automatic sampling device in flue gas - Google Patents
Sulfur trioxide's automatic sampling device in flue gas Download PDFInfo
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- CN206038382U CN206038382U CN201620945587.8U CN201620945587U CN206038382U CN 206038382 U CN206038382 U CN 206038382U CN 201620945587 U CN201620945587 U CN 201620945587U CN 206038382 U CN206038382 U CN 206038382U
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- flue gas
- bottle
- sulfur trioxide
- absorption bottle
- sampling
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Abstract
The utility model discloses a sulfur trioxide's automatic sampling device in flue gas, including flue gas sampling module, flue gas transport and collection module and observing and controlling module, does flue gas sampling module include gas recovery pipe (1 1 )With the pressure test pipe (1 rather than being connected 2 ) is the flue gas carried and collection module includes thermostated container (0 1 ), absorption bottle, stock solution bottle (7 1 ), stock solution bottle two (7 2 ), air pump (10 2 )With liquid conveying pump (10 1 ). The utility model discloses can realize functions such as automatic sampling, absorption bottle wash, pipeline washing, reduce artifical repeated work by a wide margin, improve the accuracy of sampling.
Description
Technical field
This utility model belongs to Pollution Source Monitoring field, the automatic sampling apparatus of sulfur trioxide in specifically a kind of flue gas.
Background technology
Sulfur trioxide (SO3) pollution is very important problem in industrial process with coal-burning power plant as representative, its formation
Sulfuric acid vapor wall temperature less than acid dew point heating surface on condense, heavy corrosion phenomenon can be caused, therefore, monitoring flue gas in three
The content of sulfur oxide has vital meaning.
The moisture that can be absorbed rapidly due to sulfur trioxide in flue gas generates fumes of sulphuric acid, can condense and adhere to sampling test
On the transmission pipeline of instrument, cause sampling error and instrument corrosion, therefore, the sampling method of sulfur trioxide is to flue gas inspection result
Degree of accuracy affect it is great.Existing flue gas monitoring equipment or complex structure, monitoring cost are high, or sampling effect is poor, easily causes and takes
Sample error, impact analysis test result.Additionally, analysis test job is numerous and diverse under line, a large amount of manpowers and time is taken.
Utility model content
For solving the above problems, this utility model provides a kind of automatic sampling apparatus of sulfur trioxide in flue gas, this dress
Put and sample convenient, high degree of automation, realize the automatic data collection of sample, concrete technical scheme is as follows：
The automatic sampling apparatus of sulfur trioxide in a kind of flue gas, including flue gas sampling module, flue gas conveying and acquisition module
And control module；
Flue gas sampling module includes air collecting pipe and coupled stress test pipe；
Flue gas is conveyed and acquisition module includes that calorstat, absorption bottle, liquid containing bottle one, liquid containing bottle two, air pump and liquid are defeated
Send pump；Absorption bottle is arranged in calorstat, and liquid containing bottle one is connected with absorption bottle bottom installed in constant temperature lower box part, and liquid containing bottle two is pacified
It is mounted in constant temperature upper box part to be connected with the top of absorption bottle by liquid delivery pump, air pump is arranged on the right side of calorstat and absorption bottle phase
Even；
Control module includes mass flow controller, is separately mounted to what air pump and liquid delivery pump were connected with absorption bottle
In pipeline.
Further, heat-insulation layer is coated outside the calorstat, critesistor, cold plate and thermometric are installed on the inside of tank wall and are visited
Head.
Further, the flue gas conveying and acquisition module include the absorption bottle of multiple series connection, install porous in absorption bottle
Glass plate.
Further, the flue gas conveying and acquisition module include anti-suck before the pump between absorption bottle and air pump
And dry component, component includes concatenating anti-suck bottle and exsiccator.
Further, flue gas sampling module includes attemperating unit.
Further, before the pump, on anti-suck and dry component, emergent gas circuit in parallel is used for protecting air pump.
The beneficial effects of the utility model are：
1. flue gas sampling module is furnished with particulate matter fore filter and temperature control component, with prevent sulfur trioxide condense in advance and
The blocking of flue gas pipeline.
2. temperature automatically controlled calorstat, maintains the sampling environment of low temperature to be beneficial to the condensation and collection of sulfur trioxide gas.
3. flue gas conveying and acquisition module in the bottom-up porous glass plate by bubble absorption bottle of flue gas, enter one
Step reduces the possibility of airway blockage.
4. device is provided with anti-suck and dry component, and reserved emergency bypass, reply sampling accident that can be good, extends dress
Put the life-span.
5. device is capable of achieving the function such as sampling, absorption bottle flushing, pipeline-cleaning automatically, and artificial repeatability labor is greatly lowered
It is dynamic, improve the accuracy of sampling.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Alternative forms of the Fig. 2 for this utility model air collecting pipe；
Fig. 3 is sampled flow chart automatically for this utility model.
Specific embodiment
The principle and feature of utility model are described below in conjunction with accompanying drawing, example is served only for explaining that this practicality is new
Type, is not intended to limit scope of the present utility model.
Such as Fig. 1, the automatic sampling apparatus of sulfur trioxide in a kind of flue gas, convey and adopt including flue gas sampling module, flue gas
Collection module, control module and automatic control panel 11.
Flue gas sampling module includes air collecting pipe 1-1 and coupled stress test pipe 1-2；Air collecting pipe 1-1 can use Fig. 2
Middle air collecting pipe 1-4 replaces.Air collecting pipe 1-1 front ends are provided with particulate matter fore filter, and the material of filter is quartzy, and filter is filled out
Glass fibre filter pulp is filled, to filter ash in flue gas.The flue gas flow direction of flue gas sampling module collection is contrary with flue gas flow direction to be measured
Or be mutually perpendicular to, to reduce ash collection, prevent the stifled ash of flue gas sampling module.Install on air collecting pipe 1-1 according to actual needs
Attemperating unit 1-3, maintains flue-gas temperature to be measured in more than 130 degrees Celsius, and in preventing flue gas, sulfur trioxide is condensed in flue gas conveying
And in the pipeline before acquisition module, reduce sampling error.When flue gas to be measured is high-temperature flue gas, attemperating unit 1-3 can not be installed.
The pipeline 2-3 that flue gas sampling module is conveyed with flue gas and acquisition module is connected is provided with valve 3-2.
Flue gas is conveyed and acquisition module includes calorstat 0-1, absorption bottle, one 7-1 of liquid containing bottle, two 7-2 of liquid containing bottle, air pump
10-2 and liquid delivery pump 10-1.Porous glass plate (glass sieve plate), the bubble of three series connection are installed in bubble absorption bottle
Absorption bottle (absorption bottle 6-1, absorption bottle 6-2, absorption bottle 6-3) forms absorption bottle group and is arranged in calorstat.One 7-1 of liquid containing bottle pacifies
It is mounted in constant temperature lower box part to be connected with each absorption bottle bottom, two 7-2 of liquid containing bottle is arranged on constant temperature upper box part and passes through liquid delivery pump
10-1 is connected with the top of each absorption bottle, and air pump 10-2 is arranged on the right side of calorstat and is connected with absorption bottle 6-3, before middle installation pump
Anti-suck and dry component, component include concatenating anti-suck bottle 8-1,8-2 and exsiccator 9-1,9-2, mass flow controller 4-5
It is connected with anti-suck before air pump 10-2 and pump and dry component respectively.Heat-insulation layer is coated outside calorstat, to maintain sampling ring
Border temperature.Critesistor (not shown), cold plate 0-4 and temperature probe 0-3, during operation, calorstat are installed on the inside of tank wall
It is internal to load the deionized water for not having cold plate 0-4, and by the temperature control panel 0-2 and internal temperature detecting head outside calorstat
0-3, controls box interior temperature for 0～5 degree Celsius.In sampling process, flue gas is via flue gas sampling module, be flexible coupling pipeline 2-
3rd, flue gas conveying and acquisition module entrance pipe 2-21 are in the absorption bottle group in calorstat 0-1.Absorption bottle group is using series connection
Connection, in absorption bottle entrance gas circuit end glass sieve plate immersion absorbing liquid, to fully absorb the sulfur trioxide in flue gas.
Control module includes mass flow controller, is separately mounted to air pump 10-2 and liquid delivery pump 10-1 and absorption
In the pipeline of bottle connection.
Automatic control panel 11 is used for controlling all valves in sampling apparatuses, air pump 10-2, liquid delivery pump 10-1
And mass flow controller.
The power of sampling process is provided by air pump 10-2.By device outlet flue gas via gas circuit 2-22 or gas circuit 2-
23, sampling flow is controlled by mass flow controller 4-5 and is stable at per minute 0.5 particular value being raised between 2.0 liters, to adopt
The flue gas of collection certain volume.Gas circuit 2-22 (gas circuit 2-23) is anti-suck, dry-run protection gas circuit before pump, comprising top stop valve 3-
7 (stop valve 3-8), anti-suck bottle 8-1 (anti-suck bottle 8-2), discoloration silica gel drier 9-1 (discoloration silica gel drier 9-2) and
End stop valve 3-9 (stop valve 3-10), two gas circuit the using and the reserved, in order to the timely replacing of component.In an embodiment
In, emergent gas circuit 2-24 is set in valve 3-7 and 3-8 rear ends, if necessary, by closing valve 3-7 (valve 3-8) opening valve
Door 3-13 is opening emergent gas circuit to protect air pump 10-2.
The pipeline switching of the automatic sampling apparatus of sulfur trioxide has four kinds of patterns：Absorbing liquid supply model, gas sampling mould
Formula, gas circuit cleaning model and compressed air purging pattern.
Before sampling, automatic sampling apparatus switch to absorbing liquid supply model, and absorbing liquid is via liquid delivery pump 10-1 from storage
Two 7-2 Jing valves 3-12 of liquid bottle and mass flow controller 4-4 control total quantities, by mass flow controller 4-1,4-2,4-3 and
Valve 5-1,5-2,3-11 are averagely delivered in absorption bottle group.Isopropanol of the solution for concentration 80vol.% in two 7-2 of liquid containing bottle
Solution, the optional scope of absorbing liquid cumulative volume are 100～200 milliliters.
During sampling, automatic sampling apparatus switch to gas sampling pattern.Flue gas is via flue gas sampling module, be flexible coupling pipeline
2-3, valve 3-2, pipeline 2-21 in the absorption bottle group in calorstat 0-1, by by gas circuit 2-22 or gas circuit 2-23 (by valve
Door 3-7,3-8,3-9 and 3-10 control), sampling flow is controlled by mass flow controller 4-5.Sampling flow be stable at per point
Clock 0.5 is raised to the particular value between 2.0 liters, to gather the flue gas of certain volume.
At the end of sampling, in automatic sampling apparatus control absorption bottle, solution passes through valve 3-4, valve 3-5 and valve respectively
Converge after 3-6,2-16 is imported in one 7-1 of liquid containing bottle by the road, and (part of this pattern connection includes inhaling by gas circuit cleaning model
All pipelines and accessory in liquid supply model is received, and includes pipeline 2-11 and valve 3-11) absorption bottle and gas circuit is rinsed, collect residual
Stay solution.Absorption bottle is rinsed 3～5 times, same to import in one 7-1 of liquid containing bottle, and by the gas circuit cleaning model (portion of this pattern connection
Part includes all pipelines in absorbing liquid supply model, with the sulfur trioxide remained on collection vessel wall, to reduce sampling error.
In sample preparation process, pipeline switches between gas circuit cleaning model and compressed air purging pattern.Compression is empty
Module is swept in air-blowing includes compressed air gas source and valve 3-3, and which is accessed in pipeline 2-21 purging gas circuit.During solution conduct
Discharging of waste liquid.
In flue gas, the control module of the automatic sampling apparatus of sulfur trioxide passes through mass flow controller and temperature probe is anti-
The information such as the gas/liquid flow rate of feedback, temperature conditionss, with reference to the sampling routine operation phase, control gas in each valve situation and pipeline
Or fluid flow, to realize the automatic switchover of pipeline, to realize the automatic sampling of device.
Fig. 3 describes the flow chart that sulfur trioxide sampling apparatuses are performed according to this paper embodiments.In step I, absorb
Bottle group receives the isopropanol absorbing liquid of known volume, concentration for 80vol.%, to absorb sulfur trioxide gas, and suppresses titanium dioxide
The absorption of sulfur.In this step, shutoff valve 3-12,3-11 is opened, three-way valve 5-1,5-2 open left channel in Fig. 1, its
Remaining valve is in closure state.
In step II, flue gas to be measured by flue gas sampling module samples, by air pump 10-2 and mass flow controller 4-5
Control flue gas flow and sampling time, the absorption bottle group into series connection absorb.In sampling process, will be inhaled by temperature control panel 0-2
Receive bottle local environment temperature and be maintained at 5 DEG C.During this, only valve 3-2,3-7 and 3-9 (or valve 3-2,3-8 and 3-10) is opened
Open, remaining valve is in closure state.
Collection of the step III for absorbing liquid.After completing sampling operation, the absorption of sulfur trioxide absorption is completed in absorption bottle group
Liquid is collected with one 7-1 of liquid containing bottle by valve 3-4,3-5 and 3-6.Hereafter, above-mentioned valve, opening stop valve door 3-1,3- are closed
11st, 3-12 and three-way valve 5-1 and 5-2, after rinsing absorption bottle group and flue gas gas circuit, equally collect washing liquid.Rinsing step repeats 2-3
It is secondary, to collect the absorbing liquid of residual.For deriving solution in absorption bottle completely, compressed air by reserve on pipeline 2-21 gas circuit and
Valve 3-3 enters absorption bottle, and absorbing liquid is pressed into liquid containing bottle.
Step IV is used alternatingly absorbing liquid and compressed air cleaning absorption bottle and flue gas gas circuit.With the operation that absorbing liquid is cleaned
It is consistent with the flushing operation in step III, and when being cleaned with compressed air, compressed air enters pipeline 2-21 by valve 3-3,
Purging rear portion gas circuit.
In this flue gas, the automatic sampling apparatus of sulfur trioxide are provided with emergency bypass 2-24 in anti-suck bottle and exsiccator front end,
When there is the emergency such as suck-back, can Open valve 3-13, facilitate subsequent treatment.
This device simplifies the operation containing sulfur trioxide gas sampler body, realizes adopting automatically containing sulfur trioxide fume sample
Collection, saves sampling manpower, improves sampling accuracy, is that the analysis containing sulfur trioxide flue gas is provided convenience condition.
The foregoing is only preferable combination implementation example of the present utility model, not to limit this utility model, it is all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc. should be included in this practicality new
Within the protection domain of type.
Claims (6)
1. in a kind of flue gas sulfur trioxide automatic sampling apparatus, it is characterised in that including flue gas sampling module, flue gas conveying and
Acquisition module and control module；
Flue gas sampling module includes air collecting pipe (1-1) and coupled stress test pipe (1-2)；
Flue gas is conveyed and acquisition module includes calorstat (0-1), absorption bottle, liquid containing bottle one (7-1), liquid containing bottle two (7-2), air
Pump (10-2) and liquid delivery pump (10-1)；Absorption bottle is arranged in calorstat, and liquid containing bottle one is arranged on constant temperature lower box part and suction
The connection of bottom of bottle portion is received, liquid containing bottle two is connected with the top of absorption bottle by liquid delivery pump (10-1) installed in constant temperature upper box part, empty
Air pump (10-2) is arranged on the right side of calorstat and is connected with absorption bottle；
Control module includes mass flow controller, is separately mounted to air pump (10-2) and liquid delivery pump (10-1) and absorbs
In the pipeline of bottle connection.
2. in flue gas as claimed in claim 1 sulfur trioxide automatic sampling apparatus, it is characterised in that outside the calorstat
Cladding heat-insulation layer, installs critesistor, cold plate and temperature probe on the inside of tank wall.
3. in flue gas as claimed in claim 1 sulfur trioxide automatic sampling apparatus, it is characterised in that flue gas conveying and
Acquisition module includes installing porous glass plate in the absorption bottle of multiple series connection, absorption bottle.
4. in flue gas as claimed in claim 1 sulfur trioxide automatic sampling apparatus, it is characterised in that flue gas conveying and
Anti-suck and dry component before the pump that acquisition module includes between absorption bottle and air pump, component include concatenating anti-suck
Bottle and exsiccator.
5. in flue gas as claimed in claim 1 sulfur trioxide automatic sampling apparatus, it is characterised in that flue gas sampling module bag
Include attemperating unit (1-3).
6. in flue gas as claimed in claim 4 sulfur trioxide automatic sampling apparatus, it is characterised in that it is anti-down before the pump
Inhaling the emergent gas circuit in parallel with dry component is used for protecting air pump (10-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945587.8U CN206038382U (en) | 2016-08-25 | 2016-08-25 | Sulfur trioxide's automatic sampling device in flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945587.8U CN206038382U (en) | 2016-08-25 | 2016-08-25 | Sulfur trioxide's automatic sampling device in flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206038382U true CN206038382U (en) | 2017-03-22 |
Family
ID=58304927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620945587.8U Active CN206038382U (en) | 2016-08-25 | 2016-08-25 | Sulfur trioxide's automatic sampling device in flue gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN206038382U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389389A (en) * | 2017-07-10 | 2017-11-24 | 北京清新环境技术股份有限公司 | A kind of portable sulfur trioxide sampling instrument |
| CN108303293A (en) * | 2018-02-09 | 2018-07-20 | 华能国际电力股份有限公司 | System and method for sampling and detecting sulfur trioxide in coal-fired boiler flue gas |
| CN110243638A (en) * | 2019-05-17 | 2019-09-17 | 华电电力科学研究院有限公司 | A kind of smoke collecting apparatus and method for SCR denitration device |
-
2016
- 2016-08-25 CN CN201620945587.8U patent/CN206038382U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389389A (en) * | 2017-07-10 | 2017-11-24 | 北京清新环境技术股份有限公司 | A kind of portable sulfur trioxide sampling instrument |
| CN108303293A (en) * | 2018-02-09 | 2018-07-20 | 华能国际电力股份有限公司 | System and method for sampling and detecting sulfur trioxide in coal-fired boiler flue gas |
| CN110243638A (en) * | 2019-05-17 | 2019-09-17 | 华电电力科学研究院有限公司 | A kind of smoke collecting apparatus and method for SCR denitration device |
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