CN106289883A - Based on the portable sulfur trioxide sampling apparatus and the method that control condensation method - Google Patents
Based on the portable sulfur trioxide sampling apparatus and the method that control condensation method Download PDFInfo
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- CN106289883A CN106289883A CN201610626045.9A CN201610626045A CN106289883A CN 106289883 A CN106289883 A CN 106289883A CN 201610626045 A CN201610626045 A CN 201610626045A CN 106289883 A CN106289883 A CN 106289883A
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- absorbing liquid
- electromagnetic valve
- sulfur trioxide
- liquid
- sample
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- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000009833 condensation Methods 0.000 title claims abstract description 31
- 230000005494 condensation Effects 0.000 title claims abstract description 31
- 238000005070 sampling Methods 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 106
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims abstract description 41
- 238000003860 storage Methods 0.000 claims abstract description 8
- 230000000740 bleeding effect Effects 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 21
- 238000004458 analytical method Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 210000003437 trachea Anatomy 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 239000003546 flue gas Substances 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
Abstract
The present invention relates to a kind of based on the portable sulfur trioxide sampling apparatus and the method that control condensation method.The serpentine condenser of this device is arranged in temperature-controlled box, and upper end is connected with air inlet pipe, and lower end is connected with gas-liquid separator；Gas-liquid separator is connected with sample liquid blowdown pump and exhaust tube the most respectively；Absorbing liquid tube at one end is positioned at absorbing liquid storage, and the other end is connected to serpentine condenser upper end, absorbing liquid conduit be additionally provided with absorbing liquid transfer pump；Exhaust tube electromagnetic valve and electronic flowmeter are separately positioned on exhaust tube；Electronic flowmeter, air inlet pipe electromagnetic valve, electromagnetic valve of bleeding, sample liquid excavationg pump and absorbing liquid transfer pump are connected with single-chip microcomputer respectively.Automaticity of the present invention is high, certainty of measurement is high.
Description
Technical field
The present invention relates to sulfur trioxide sampling field, a kind of portable sulfur trioxide based on control condensation method is adopted
Sampling device and method.
Background technology
China will not occur substantial with coal for main energy sources supply pattern within the following quite a long time
Change, substantial amounts of polluter can be produced such as during consumption of coal: oxysulfide, nitrogen oxides, dust etc., cause acid
The diastrous weather such as rain, haze takes place frequently, and sulfur trioxide is brought in recent years direct, indirect hazard are gradually weighed by insider
Depending on.Abroad put into effect relevant sulfur trioxide discharge standard.The constructive ways of coal-burning power plant's sulfur trioxide mainly has: coal combustion process
Middle sulphur-containing substance is oxidized and sulfur dioxide in flue gas is changed into sulfur trioxide by SCR denitration device catalyst.
In coal-fired flue-gas, the main harm of sulfur trioxide is summarized as following 4 points:
Form " Lan Yu " phenomenon, increase smoke evacuation opacity.
Running on the lower load SCR denitration device entrance flue gas temperature is less than the minimum continuous running temperature requirement of catalyst, flue gas
The ammonia that middle sulfur trioxide and denitrification apparatus spray into reacts generation ammonium hydrogen sulfate, and this electrodeposition substance, in catalyst pores, causes catalysis
Agent inactivates, and catalyst uses cycle time to increase production cost.In order to avoid the ammonium hydrogen sulfate impact on catalyst, cause SCR
Denitrification apparatus is out of service, makes electric power enterprise face huge environmental protection pressure.
Generate ammonium hydrogen sulfate to block and corrosion air preheater, cause exhaust gas temperature rising, boiler thermal output to reduce, air inducing
Exert oneself increase, operating cost of machine raises, even affects unit high load capacity stable operation.
Flue gas is formed H2SO4Steam causes cold end corrosion, causes air and gas system air-tightness to reduce.SO3Discharge and control are just
Gradually paid attention to, SO in studying coal-fired power-plant flue gas3Distribution and emission behaviour paid attention to it is thus desirable to one by industry and expert
Plant sulfur trioxide accurate, efficient test device.
The method of sampling of domestic and foreign current mainly has: control condensation method and solution absorption method.Controlling its principle of condensation method is
The centrifugal force that sample gas produces in flowing through water-bath coil or serpentine pipe, under the influence of centrifugal force by the sulfur trioxide of droplet shape
And sulphuric acid is attached to serpentine pipe internal face, application absorbing liquid is dissolved sulfur trioxide and the sulfuric acid droplets of serpentine condenser inwall, is adopted
Collection treats subsequent analysis to sulfur trioxide sample.Its principle of solution absorption method is that sample gas passes through directly to absorb with absorbent in ice bath
Sulfur trioxide in flue gas, absorbent can effectively prevent sulfur dioxide oxidized, and the sample gas after absorption is washed by dioxygen
Other equipment are entered after gas cylinder.
Control condensation method to be widely applied, but in application process, expose some shortcomings, affect its test essence
Degree, controls condensation method shortcoming and is summarized as follows:
1, water bath with thermostatic control is not easy to execute-in-place, there is scald and electrical short-circuit risk；
2, the interim glass apparatus assembled easily damaged, air-tightness is difficult to ensure that；
3, system integration, automaticity are low, require higher to operator.
Summary of the invention
One of the technical problem to be solved be to provide a kind of portable construction, easily operated, be capable of automatically
The portable sulfur trioxide sampling apparatus based on control condensation method controlled.
It is as follows that the present invention solves the technical scheme that above-mentioned technical problem used:
Portable sulfur trioxide sampling apparatus based on control condensation method, including air inlet pipe electromagnetic valve, air inlet pipe, temperature control
Case, serpentine condenser, gas-liquid separator, sample liquid excavationg pump, exhaust tube electromagnetic valve, absorbing liquid storage, absorbing liquid transfer pump, take out
Trachea, absorbing liquid conduit, electronic flowmeter and single-chip microcomputer；Serpentine condenser is arranged in temperature-controlled box, and upper end is with air inlet pipe even
Connecing, lower end is connected with gas-liquid separator；Gas-liquid separator is connected with sample liquid blowdown pump and exhaust tube the most respectively；Absorbing liquid conduit one
End is positioned at absorbing liquid storage, and the other end is connected to serpentine condenser upper end, absorbing liquid conduit be additionally provided with absorbing liquid supply
Pump；Exhaust tube electromagnetic valve and electronic flowmeter are separately positioned on exhaust tube；Electronic flowmeter, air inlet pipe electromagnetic valve, electricity of bleeding
Magnet valve, sample liquid excavationg pump and absorbing liquid transfer pump are connected with single-chip microcomputer respectively.
This device uses temperature-controlled box to provide the temperature environment being suitable for sulfur trioxide condensation, coordinates serpentine condenser ensure that
The condensation effect of sulfur trioxide.
As preferably, serpentine condenser is vertically arranged.Have an advantage in that, it is simple to condensed example enrichment, and be conducive to
In absorbing liquid flushing process, absorbing liquid from up to down flows.
As preferably, the arbitrary isoperibol that can provide in the range of 60-110 DEG C of temperature-controlled box.Have an advantage in that, at this
In temperature range, sulfur trioxide can condense fully in serpentine condenser.
The two of the technical problem to be solved be to provide a kind of sample effect good, realize automatically control based on control
The portable sulfur trioxide method of sampling of condensation method processed.
It is as follows that the present invention solves the technical scheme that above-mentioned technical problem used:
The portable sulfur trioxide method of sampling based on control condensation method, comprises the steps:
S1. instrument POST；
S2. open air inlet pipe electromagnetic valve (sample gas side) and exhaust tube electromagnetic valve, close sample liquid excavationg pump and absorbing liquid supply
Pump, start electronic flowmeter, sample gas through serpentine condenser condensation sample gas in sulfur trioxide and sulfuric acid droplets；
S3. sample gas extraction closes air inlet pipe electromagnetic valve, exhaust tube electromagnetic valve, sample liquid excavationg pump and electronic flow after terminating
Meter, sample gas bulk transport to single-chip microcomputer, is opened absorbing liquid transfer pump, absorbing liquid flushing serpentine condenser, is filled by electronic flowmeter
Divide the sulfur trioxide and condensation of sulfuric acid liquid dissolved in serpentine condenser, open sample liquid excavationg pump, collect sample liquid and treat subsequent analysis；
S4. after absorbing liquid rinses serpentine condenser, close absorbing liquid transfer pump and sample liquid excavationg pump, start air inlet pipe electromagnetism
Valve (air side), exhaust tube electromagnetic valve and electronic flowmeter, temperature-controlled box remains that operating temperature is constant therebetween, by suction sky
Absorbing liquid in serpentine condenser is got rid of by gas, treats that in serpentine condenser, absorbing liquid is all discharged；
S5. repeat step S2 to S4 and continue sampling.
This method uses and controls condensation method, and by serpentine condenser is arranged in temperature-controlled box, so that three oxidations
Sulfur can condense in serpentine condenser fully, and then improves sample effect.
As preferably, in step S1, self-inspection project include electric short circuit, electronic flowmeter is demarcated, inspection system
Air-tightness and each device are the most properly functioning.Have an advantage in that, it is to avoid be short-circuited in sampling process, the problem such as leakage,
Ensure that being smoothed out of sampling process, improve the accuracy of sampling.
The present invention compared with the existing technology has the following advantages and effect:
1, it is suitable for, owing to the present invention uses temperature-controlled box to provide, the temperature environment that sulfur trioxide condenses, is on the one hand easy to on-the-spot behaviour
Make, on the other hand the most there is not scald and electrical short-circuit risk.
2, higher due to integration degree of the present invention, it is possible to realize automatically controlling, it is to avoid glass instrument in traditional sampling method
Device is fragile, device air-tightness is relatively low and heating in water bath operates the factor impacts such as complicated, dangerous, it is possible to realize accurately, efficiently
Sulfur trioxide sampling operation.
3, apply the serpentine condenser of vertically layout to be easy to condensed example enrichment due to the present invention, and be conducive to absorbing
In liquid flushing process, absorbing liquid from up to down flows.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is assembly of the invention structural representation.
Label declaration:
1, air inlet pipe 101, air inlet pipe electromagnetic valve
2, temperature-controlled box 3, serpentine condenser
4, gas-liquid separator 5, sample liquid excavationg pump
6, exhaust tube electromagnetic valve 7, electronic flowmeter
8, absorbing liquid storage 9, absorbing liquid transfer pump
10, single-chip microcomputer 11, exhaust tube
12, absorbing liquid conduit
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, following example be explanation of the invention and
The invention is not limited in following example.
Embodiment 1:
As it is shown in figure 1, the portable sulfur trioxide sampling apparatus based on control condensation method of the present embodiment includes air inlet pipe
1, temperature-controlled box 2, serpentine condenser 3, gas-liquid separator 4, sample liquid excavationg pump 5, exhaust tube 11, electromagnetic valve 6, absorbing liquid storage 8,
Absorbing liquid transfer pump 9, absorbing liquid conduit 12, single-chip microcomputer 10 and be provided with the electronic flowmeter 7 of vacuum pump.
Air inlet pipe 1 is provided with air inlet pipe electromagnetic valve 101, and air inlet pipe electromagnetic valve 101 is three-way valve, it is possible to switching sample gas, sky
Gas and closedown gas circuit.
Single-chip microcomputer 10 respectively with electronic flowmeter 7, air inlet pipe electromagnetic valve 101, electromagnetic valve of bleeding, sample liquid excavationg pump 5 and inhale
Receive liquid transfer pump 9 to connect, thus realize automatically controlling.So that the present embodiment integration degree is higher, it is possible to realize automatically
Control, it is to avoid in traditional sampling method, glass apparatus damages, device air-tightness is relatively low and heating in water bath operation is complicated, dangerous etc.
Factor affects, it is achieved sulfur trioxide sampling operation accurate, efficient.
Serpentine condenser 3 is vertically disposed in temperature-controlled box 2, and sample gas from up to down flows；And serpentine condenser 3 upper end with enter
Trachea 1 connects, and lower end is connected with gas-liquid separator 4.Serpentine condenser 3 length should ensure that sample gas temperature be down to acid dew-point temperature,
And ensure that sulfur trioxide has enough condensation distances.
Gas-liquid separator 4 connects with being connected sample liquid excavationg pump 5.Gas-liquid separator 4 can be collected the most unadsorbed snakelike
Sulfur trioxide base sulfuric acid droplets in condensing tube 3, separates gas simultaneously and discharges.
Exhaust tube 11 is provided with exhaust tube electromagnetic valve 6 and electronic flowmeter 7, exhaust tube electromagnetic valve 6 one end and gas-liquid separation
Device 4 connects, and the other end passes through to be connected with electronic flowmeter 7.Electronic flowmeter 7 can set flow, it is achieved constant flow rate is sampled, and
Automatically record, transmission sample information to single-chip microcomputer 10, and then improve the accuracy of this device sampling.Gas-liquid separator 4 is also arranged
In temperature-controlled box 2.
Absorbing liquid conduit 12 one end is positioned at absorbing liquid storage 8, and the other end is connected to serpentine condenser 3 upper end, absorbs
Absorbing liquid transfer pump 9 it is additionally provided with on fluid catheter 12.Absorbing liquid transfer pump 9 is exerted oneself and be should ensure that absorbing liquid can fully absorb and be condensate in
Serpentine condenser 3 inwall sulfur trioxide and sulfuric acid droplets.
Temperature-controlled box 2 can be according to the isoperibol in the range of test demand offer 60-110 DEG C.
The portable sulfur trioxide method of sampling based on control condensation method of the present embodiment, comprises the steps:
S1. instrument POST；
S2. open air inlet pipe electromagnetic valve 101 (sample gas side) and exhaust tube electromagnetic valve 6, close sample liquid excavationg pump 5 and absorbing liquid
Transfer pump 9, starts electronic flowmeter 7, and sample gas condenses the sulfur trioxide in sample gas and sulfuric acid droplets through serpentine condenser 3；
S3. sample gas extraction closes air inlet pipe electromagnetic valve 101, exhaust tube electromagnetic valve 6, sample liquid excavationg pump 5 and electronics after terminating
Effusion meter 7, sample gas bulk transport to single-chip microcomputer 10, opened absorbing liquid transfer pump 9 by electronic flowmeter 7, and absorbing liquid is rinsed snakelike
Condensing tube 3, fully dissolves the sulfur trioxide in serpentine condenser 3 and condensation of sulfuric acid liquid, opens sample liquid excavationg pump 5, collect sample liquid
Treat subsequent analysis；
S4. after absorbing liquid rinses serpentine condenser 3, close absorbing liquid transfer pump 9 and sample liquid excavationg pump 5, start air inlet pipe
Electromagnetic valve 101 (air side), exhaust tube electromagnetic valve 6 and electronic flowmeter 7, temperature-controlled box 2 remains that operating temperature is constant therebetween,
By suction air, the absorbing liquid in serpentine condenser 3 is got rid of, treat that in serpentine condenser 3, absorbing liquid is all discharged；
S5. repeat step S2 to S4 and continue sampling, until sampling terminates.
In above-mentioned step S1, self-inspection project include electric short circuit, electronic flowmeter is demarcated, inspection system airtight
Property and each device are the most properly functioning.Device is primarily referred to as temperature-controlled box 2, sample liquid excavationg pump 5, absorbing liquid transfer pump 9, air inlet pipe
Electromagnetic valve 101 and exhaust tube electromagnetic valve 6.
Sulfur trioxide in flue gas is all condensed to be attached to serpentine condenser 3 inwall by controlling condensation method by the present invention
On, and sulfur trioxide and the sulfuric acid droplets of condensation is fully absorbed by absorbing liquid, treat that subsequent analysis obtains sulfur trioxide content.Enter
Gas solenoid 101 is three-way valve, can lead to sample gas, air or close gas circuit.Use single-chip microcomputer 10 technology without manual operation,
System integration degree is high, it is only necessary to periodically samples, is greatly improved the automatic operating degree of system, in combination with liquid crystal display skill
Art obtains associated sample data in real time.Instant invention overcomes traditional method system structure complexity, complex operation, system stability low
Shortcoming, it is achieved that sulfur trioxide sampling portable, high-efficient homework, sulfur trioxide concentration in the flue gas of studying coal-fired equipment is had
There is realistic meaning.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, the shape of its parts and components, it is named
Titles etc. can be different.All equivalences done according to structure, feature and the principle described in inventional idea of the present invention or simple change, all wrap
Include in the protection domain of patent of the present invention.Described can be embodied as by those skilled in the art
Example is made various amendment or supplements or use similar mode to substitute, without departing from the structure of the present invention or surmount this
Scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (5)
1. a portable sulfur trioxide sampling apparatus based on control condensation method, is characterized in that: include air inlet pipe electromagnetic valve, enter
Trachea, temperature-controlled box, serpentine condenser, gas-liquid separator, sample liquid excavationg pump, exhaust tube electromagnetic valve, absorbing liquid storage, absorbing liquid
Transfer pump, exhaust tube, absorbing liquid conduit, electronic flowmeter and single-chip microcomputer；Described serpentine condenser is arranged in temperature-controlled box, and
Upper end is connected with air inlet pipe, and lower end is connected with gas-liquid separator；Described gas-liquid separator the most respectively with sample liquid blowdown pump and taking out
Trachea connects；Described absorbing liquid tube at one end is positioned at absorbing liquid storage, and the other end is connected to serpentine condenser upper end, inhales
Receive and be additionally provided with absorbing liquid transfer pump on fluid catheter；Described exhaust tube electromagnetic valve and electronic flowmeter are separately positioned on exhaust tube
On；Described electronic flowmeter, air inlet pipe electromagnetic valve, electromagnetic valve of bleeding, sample liquid excavationg pump and absorbing liquid transfer pump respectively with list
Sheet machine connects.
Portable sulfur trioxide sampling apparatus based on control condensation method the most according to claim 1, is characterized in that: described
Serpentine condenser vertically arrange.
Portable sulfur trioxide sampling apparatus based on control condensation method the most according to claim 1, is characterized in that: described
Temperature-controlled box the arbitrary isoperibol in the range of 60-110 DEG C can be provided.
4. a portable sulfur trioxide method of sampling based on control condensation method, is characterized in that: appoint based on claims 1 to 3
One described portable sulfur trioxide sampling apparatus based on control condensation method, comprises the steps:
S1. instrument POST；
S2. open air inlet pipe electromagnetic valve (sample gas side) and exhaust tube electromagnetic valve, close sample liquid excavationg pump and absorbing liquid transfer pump, open
Dynamic electronic flowmeter, sample gas sulfur trioxide in serpentine condenser condensation sample gas and sulfuric acid droplets；
S3. air inlet pipe electromagnetic valve, exhaust tube electromagnetic valve, sample liquid excavationg pump and electronic flowmeter, electricity are closed in sample gas extraction after terminating
Sample gas bulk transport to single-chip microcomputer, is opened absorbing liquid transfer pump by subflow gauge, and absorbing liquid rinses serpentine condenser, fully dissolves
Sulfur trioxide in serpentine condenser and condensation of sulfuric acid liquid, open sample liquid excavationg pump, collects sample liquid and treats subsequent analysis；
S4. after absorbing liquid rinses serpentine condenser, close absorbing liquid transfer pump and sample liquid excavationg pump, start air inlet pipe electromagnetic valve
(air side), exhaust tube electromagnetic valve and electronic flowmeter, temperature-controlled box remains that operating temperature is constant therebetween, by suction air
Absorbing liquid in serpentine condenser is got rid of, treats that in serpentine condenser, absorbing liquid is all discharged；
S5. repeat step S2 to S4 and continue sampling.
The portable sulfur trioxide method of sampling based on control condensation method the most according to claim 4, is characterized in that: described
Step S1 in, self-inspection project includes electric short circuit, demarcates electronic flowmeter, checks system air-tightness and each device
The most properly functioning.
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| CN106813954A (en) * | 2017-01-23 | 2017-06-09 | 浙江菲达环保科技股份有限公司 | A kind of sampling system suitable for the sampling of low concentration sulfur trioxide |
| CN109141992A (en) * | 2018-10-16 | 2019-01-04 | 华北电力大学（保定） | Hydrogen sulfate ammonia sampling apparatus and method based on control condensation method |
| WO2023010634A1 (en) * | 2021-08-06 | 2023-02-09 | 西安热工研究院有限公司 | Quick-response online continuous measurement system for sulfur trioxide and method therefor |
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| CN206020115U (en) * | 2016-08-02 | 2017-03-15 | 华电电力科学研究院 | A kind of portable sulfur trioxide sampling apparatuses based on control condensation method |
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| CN106813954A (en) * | 2017-01-23 | 2017-06-09 | 浙江菲达环保科技股份有限公司 | A kind of sampling system suitable for the sampling of low concentration sulfur trioxide |
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