CN205506789U - Survey device of sulphate in atmospheric particulates - Google Patents
Survey device of sulphate in atmospheric particulates Download PDFInfo
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- CN205506789U CN205506789U CN201620139929.7U CN201620139929U CN205506789U CN 205506789 U CN205506789 U CN 205506789U CN 201620139929 U CN201620139929 U CN 201620139929U CN 205506789 U CN205506789 U CN 205506789U
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- sulfate
- determinator
- atmospheric particulates
- detector
- branch road
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Abstract
The utility model belongs to the technical field of the environmental monitoring, concretely relates to survey device of sulphate in atmospheric particulates, the device include the main line and set up particulate matter cutterbar on the main line, with the help of parallelly connected survey system and the stable system who sets up of tee bend, survey system the sulphate reborner, third particle filter, flow sensor and the SO2 detector that connect gradually including two parallelly connected branch roads of connecting gradually, with the branch road export to two branch road both ends that ally oneself with are provided with the one or three solenoid valve and the two or three solenoid valve respectively, and two branch roads are provided with second particle filter and ventilation pipe respectively, stable system is including the flowmeter and the vacuum pump that set gradually, the survey system still includes the control unit. The measuring equipment that the device chooseed for use is with low costs, operation environment and low to operating personnel's technical requirement, and the facilitate promotion is used.
Description
Technical field
The invention belongs to environmental monitoring technology field, be specifically related to the mensuration of sulfate in Atmospheric particulates
Device.
Background technology
Air is one of material base of depending on for existence of the mankind, air pollution not only to atmospheric visibility and
Natural environment produces baneful influence, and threatens health, and the situation of China's air pollution in recent years is different
Chang Yanjun, fine particle (PM2.5) become the primary pollutant in many cities, the composition of fine particle
More complicated, containing multiple things such as heavy metal, DIC, organic carbon, sulfate, nitrate and ammonium salts
Matter, wherein sulfate, nitrate and the ammonium salt mass ratio in fine particle has reached more than 25-30%,
When fine particle concentration is higher than 70 μ g/m3Time, three's proportion sum is more than 70%, is particulate matter
The principal element that concentration raises.Sulfate in fine particle is anti-by Atmospheric Chemistry to a great extent
Should be formed, SO2Can be with the NH in air3Reaction, generates ammonium sulfate or ammonium hydrogen sulfate, and the two is also
Can decompose and regenerate SO2And NH3.In monitoring fine particle, the content of sulfate is for resolving
Fine particle is originated and understands that its formation mechanism has very important significance.
In prior art, main employing chromatograph carries out the mensuration of composition in Atmospheric particulates, and this sets
Standby the most relatively costly, and the technology of operating environment and operator is required higher, it is unfavorable for
These field promotion and implementation.
Summary of the invention
For the defect overcoming above-mentioned prior art to exist, the invention provides in a kind of Atmospheric particulates
The determinator of sulfate and assay method, this sensing equipment low cost, operating environment and to operator
The technology of member requires low, it is simple to uses and promotes.
The present invention can be achieved through the following technical solutions: the survey of sulfate in a kind of Atmospheric particulates
Determine device, it is important to: include main line and the cutter for particles being arranged on main line, threeway,
The mensuration system being arranged in parallel by threeway and stabilisation systems,
Described mensuration system includes that be arranged in parallel successively two branch roads are sequentially connected with a way outlet
Sulfate conversion stove, the 3rd particle filter, flow transducer and SO2Detector, in parallel two
Branch road two ends are respectively arranged with the first three-way valve and the second three-way valve, and wherein a branch road is provided with
Second particle filter, another branch road is provided with ventilation duct；
Described stabilisation systems includes effusion meter and the vacuum pump set gradually；
Mensuration system also includes control unit, effusion meter, vacuum pump, the first three-way valve, the two or three
Logical valve, flow transducer and SO2Detector is connected with control unit respectively.
Interference gas filtering device it is provided with, in stabilisation systems between described cutter for particles and threeway
Branch road is provided with the first particle filter.
Described cutter for particles is aerodynamic particle thing sickle, is used for cutting PM1To PM10
Between granule, interference gas filtering device be annular denuder.
Described annular denuder uses the Na of 2%-4%2CO3Solution carries out coating process.
The first described three-way valve and the second three-way valve are electromagnetic valve.
Described SO2Detector is ultraviolet fluorescence method SO2Detector.
The structure of described sulfate conversion stove includes the reburner heat-preservation cotton of bridge-type structure, resistance wire, spiral shell
The boiler tube of rotation shape and thermocouple, two reburner heat-preservation cotton are symmetrical arranged the hollow posts of composition square-outside and round-inside
Body structure, resistance wire genesis analysis is in the endosexine of reburner heat-preservation cotton, and boiler tube is arranged on reburner and protects
The hollow region that temperature is cotton, is provided with catalyst in boiler tube, thermocouple is arranged on the center of boiler tube.
Beneficial effects of the present invention:
In this determinator, each ingredient attachment structure is simple, and cost is relatively low, the most square during operation
Just, operator be there is no higher technology requirement, and the requirement to environment in use of this device
Low, can use in any occasion, greatly facilitate the mensuration of Atmospheric particulates sulfate concentration,
The control of operation it is circulated by control unit, thus more smart by calculating of multi-group data
Accurate air particle sulfate concentration.Additionally, compared with conventional Ion Chromatographic Method, this
Invention can not only monitor water miscible Sulfate, moreover it is possible to monitoring water insoluble component；
The aerodynamic particle thing sickle that cutter for particles is selected can carry out PM1To PM10?
Grain cutting, filters out the air of the granule containing PM2.5 by choosing the cutting head of PM2.5；
Interference gas filtering device is annular denuder, it is preferred to use the Na of 2%2CO3Solution carries out coating
Process, effectively filter out interference gas, mainly include SO2And H2S；
Sulfate conversion stove is for being converted into gaseous sulphide in air sample and Sulfate
SO2, catalyst used during conversion is rustless steel, and catalytic temperature is 900-1000 DEG C；
Stabilisation systems is for ensureing that total sampling flow of whole determinator meets aerodynamic particle thing
The design discharge requirement of cutting head in sickle, deducts flow by the design discharge of cutter for particles and passes
The real time measure of sensor is worth to a calculated flow rate value, and sets this calculated flow rate value to effusion meter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the longitudinal section figure of sulfate conversion stove in Fig. 1.
Fig. 3 is the cross-sectional view of sulfate conversion stove in Fig. 1.
In accompanying drawing, 1 is cutter for particles, and 2 is interference gas filtering device, and 3 is threeway, and 4 are
First particle filter, 5 is effusion meter, and 6 is vacuum pump, and 7 is the first three-way valve, and 8 is second
Particle filter, 9 is the second three-way valve, and 10 is sulfate conversion stove, and 11 is the 3rd particulate filter
Device, 12 is flow transducer, and 13 is SO2Detector, 14 is control unit, and 15 is reburner insulation
Cotton, 16 is resistance wire, and 17 is boiler tube, and 18 is thermocouple.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
Specific embodiment, as it is shown in figure 1, the determinator of sulfate in a kind of Atmospheric particulates, bag
Including main line and the cutter for particles 1 being arranged on main line, cutter for particles 1 moves for air
Mechanics cutter for particles, can carry out PM1To PM10Granule cutting, main line particulate matter cut
Device 1 rear end is connected with interference gas filtering device 2, and interference gas filtering device 2 is annular corrosion
Device, it is preferred to use 2%-4% or Na2CO3Carry out coating process, in interference gas filtering device 2 rear end
Connecting and have threeway 3, threeway 3 is connected with main line, mensuration system, stabilisation systems respectively.
The sulfate of two branch roads and two way outlet connections that mensuration system is sequentially provided with parallel connection turns
Change stove the 10, the 3rd particle filter 11, flow transducer 12 and SO2Detector 13, in parallel two
Article branch road two ends are connected with the one or three energising including a1 port, b1 port, c1 port respectively
Magnet valve 7 and include the second three-way magnetic valve 9 of a2 port, b2 port, c2 port, a1 port with
On main line, an outlet of threeway 3 connects, and a2 port is connected with the entrance of sulfate conversion stove 10, and two
The entrance of bar branch road is connected with b1 port, c1 port respectively, outlet respectively with b2 port, c2 port
Connect, wherein, between b1 port and b2 port, be provided with the second particle filter 8, c1 port with
It is provided with ventilation duct between c2 port.
Stabilisation systems is connected with another outlet of threeway on main line 3, is disposed with the first particle mistake
Filter 4, effusion meter 5 and vacuum pump 6.
Determinator is additionally provided with control unit 14, effusion meter 5, vacuum pump the 6, first threeway electromagnetism
Valve the 7, second three-way magnetic valve 9, flow transducer 12 and SO2Detector 13 respectively with control unit
14 connect.
Above three-way valve is preferably three-way magnetic valve, SO2Detector 13 is ultraviolet fluorescence method SO2Detection
Device.
As shown in Figures 2 and 3, sulfate conversion stove 10 includes reburner heat-preservation cotton 15, resistance wire
16, boiler tube 17 and thermocouple 18, reburner heat-preservation cotton 15 is bridge-type structure, two reburner insulations
The cotton 15 symmetrical hollow cylinder structures connecting composition square-outside and round-inside, resistance wire 16 genesis analysis is converting
The endosexine of stove heat-preservation cotton 15, boiler tube 17 is for helical structure and is arranged in reburner heat-preservation cotton 15
Dummy section, is provided with catalyst in boiler tube 17, thermocouple 18 inserts the center of boiler tube 17.
Using this determinator to carry out the assay method of sulfate in Atmospheric particulates, step is as follows:
A, the preparation of air sample
Cutter for particles 1 is aerodynamic particle thing sickle, chooses PM2.5Cutting head, treat
Survey air and filter out PM after treatment2.5Particle, then will be dry by interference gas filtering device 2
Disturb gas and (mainly include SO2And H2S) filter, obtain air sample；
B, detection gaseous sulphide and the concentration of Sulfate
The a1 port of the first three-way magnetic valve 7, c 1 port open, b1 port shutdown, the second threeway
The a2 port of electromagnetic valve 9, c2 port open, b2 port shutdown, pass through SO2Detector 13 is by sky
Gas sample product extract, containing PM2.5The air sample of granule is directly entered sulfate by way of ventilation duct and turns
Changing stove 10, gaseous sulphide and Sulfate are converted into SO by sulfate conversion stove 102, the 3rd
Particle filter 11 filters remaining particulate matter in air sample, and flow transducer 12 records air stream
Amount Q1, finally enter SO2Detector 13, records the concentration of gaseous sulphide and Sulfate；
C, the concentration of detection gaseous sulphide
The a1 port of the first three-way magnetic valve 7, b1 port open, c1 port shutdown, the second threeway
The a2 port of electromagnetic valve 9, b2 port open, c2 port shutdown, pass through SO2Detector 13 is by sky
Gas sample product extract, containing PM2.5The air sample of granule is by way of the second particle filter 8, by sky
Particulate matter in gas sample product all filters out, the most again by sulfate conversion stove 10, and sulfate conversion
Gaseous sulphide is converted into SO by stove 102, the 3rd particle filter 11 filters in air sample remaining
Particulate matter, flow transducer 12 records air mass flow Q2, finally enter SO2Detector 13, records gas
The concentration of state sulfide；
D, the concentration of calculating Sulfate
The concentration of the gaseous sulphide in step b and Sulfate is deducted gaseous sulfur in step c
The concentration of compound, finally gives the concentration of Sulfate in air to be measured.
In step b and step c, sulfate conversion stove 10 for by gaseous sulphide in air sample and
Sulfate is converted into SO2, catalyst used during conversion is rustless steel, and catalytic temperature is
950 DEG C, wherein gaseous sulphide includes sulfur dioxide SO2, hydrogen sulfide H2S, mercaptan and thioether etc.,
Grain state sulfate includes ammonium sulfate (NH4)2SO4, ammonium hydrogen sulfate NH4HSO4, sodium sulfate Na2SO4, sulphuric acid
Potassium K2SO4, magnesium sulfate MgSO4, calcium sulfate CaSO4；SO2Ultraviolet fluorescence method SO selected by detector 132
Detector.
In this device, it is also possible to control the first three-way magnetic valve 7 and the second threeway by control unit 14
Electromagnetic valve 9 state switching, at interval of 20 minutes switching valve state, carry out respectively step b,
The operation of step c, after a cycle period terminates, it is possible to obtain one group of concentration data for carrying out d
The calculating of the Sulfate concentration in step, can effectively reduce the error of testing result.
Claims (7)
1. the determinator of sulfate in Atmospheric particulates, it is characterised in that: include main line with
And be arranged on main line cutter for particles (1), threeway (3) and in parallel by threeway (3)
The mensuration system arranged and stabilisation systems,
Described mensuration system includes that be arranged in parallel successively two branch roads are sequentially connected with a way outlet
Sulfate conversion stove (10), the 3rd particle filter (11), flow transducer (12) and SO2
Detector (13), two branch road two ends in parallel are respectively arranged with the first three-way valve (7) and second
Three-way valve (9), wherein a branch road is provided with the second particle filter (8), and another branch road sets
It is equipped with ventilation duct；
Described stabilisation systems includes effusion meter (5) and the vacuum pump (6) set gradually；
Mensuration system also includes control unit (14), effusion meter (5), vacuum pump (6), the first threeway
Valve (7), the second three-way valve (9), flow transducer (12) and SO2Detector (13) is respectively
It is connected with control unit (14).
The determinator of sulfate in a kind of Atmospheric particulates the most according to claim 1, its
It is characterised by: be provided with interference gas between described cutter for particles (1) and threeway (3) and filter
Device (2), is provided with the first particle filter (4) at stabilisation systems branch road.
The determinator of sulfate in a kind of Atmospheric particulates the most according to claim 2, its
It is characterised by: described cutter for particles (1) is aerodynamic particle thing sickle, is used for cutting
Cut PM1To PM10Between granule, interference gas filtering device (2) be annular denuder.
The determinator of sulfate in a kind of Atmospheric particulates the most according to claim 3, its
It is characterised by: described annular denuder uses the Na of 2%-4%2CO3Solution carries out coating process.
The determinator of sulfate in a kind of Atmospheric particulates the most according to claim 1, its
It is characterised by: described the first three-way valve (7) and the second three-way valve (9) are electromagnetic valve.
The determinator of sulfate in a kind of Atmospheric particulates the most according to claim 1, its
It is characterised by: described SO2Detector (13) is ultraviolet fluorescence method SO2Detector.
The determinator of sulfate in a kind of Atmospheric particulates the most according to claim 1, its
It is characterised by: the structure of described sulfate conversion stove (10) includes the reburner heat-preservation cotton of bridge-type structure
(15), resistance wire (16), spiral helicine boiler tube (17) and thermocouple (18), two reburners guarantors
Temperature cotton (15) is symmetrical arranged the hollow cylinder structure of composition square-outside and round-inside, and resistance wire (16) longitudinally divides
Cloth is in the endosexine of reburner heat-preservation cotton (15), and boiler tube (17) is arranged on reburner heat-preservation cotton (15)
Hollow region, be provided with catalyst in boiler tube (17), thermocouple (18) is arranged on boiler tube (17)
Center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139929.7U CN205506789U (en) | 2016-02-25 | 2016-02-25 | Survey device of sulphate in atmospheric particulates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139929.7U CN205506789U (en) | 2016-02-25 | 2016-02-25 | Survey device of sulphate in atmospheric particulates |
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| Publication Number | Publication Date |
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| CN205506789U true CN205506789U (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620139929.7U Active CN205506789U (en) | 2016-02-25 | 2016-02-25 | Survey device of sulphate in atmospheric particulates |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548507A (en) * | 2016-02-25 | 2016-05-04 | 河北先河环保科技股份有限公司 | Device and method for measuring sulfate in atmospheric particulates |
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2016
- 2016-02-25 CN CN201620139929.7U patent/CN205506789U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548507A (en) * | 2016-02-25 | 2016-05-04 | 河北先河环保科技股份有限公司 | Device and method for measuring sulfate in atmospheric particulates |
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| GR01 | Patent grant |