CN209117529U - A kind of VOCs on-line monitoring system - Google Patents
A kind of VOCs on-line monitoring system Download PDFInfo
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- CN209117529U CN209117529U CN201821767899.XU CN201821767899U CN209117529U CN 209117529 U CN209117529 U CN 209117529U CN 201821767899 U CN201821767899 U CN 201821767899U CN 209117529 U CN209117529 U CN 209117529U
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- vocs
- flue gas
- dust
- dehumidifier
- monitoring system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model belongs to gas monitoring techniques field, more particularly to a kind of VOCs on-line monitoring system, including dust-filtering unit, dehumidifier, VOCs analyzer, display equipment and sampling pump, the gas outlet of dust-filtering unit is connected to the air inlet of dehumidifier, the gas outlet of dehumidifier is connected to the air inlet of VOCs analyzer, the outlet pipe of VOCs analyzer is equipped with sampling pump, and VOCs analyzer is connect with display equipment；It further include mixing chamber, several probe tubes for detecting the flow detector of flue gas flow in flue gas exhausting pipe line and for acquiring flue gas, the front end of each probe tube is located in flue gas exhausting pipe line, and end is located at outside flue gas exhausting pipe line；The end of each probe tube is connected to mixing chamber, and mixing chamber is connected to the air inlet of dust-filtering unit.VOCs on-line monitoring system provided by the utility model improves the accuracy of detection, by VOCs content and flue gas flow in flue gas, handles flue gas for subsequent purification and provide data reference by measuring after multi-point sampling mixing.
Description
Technical field
The utility model belongs to gas monitoring techniques field, and in particular to a kind of VOCs on-line monitoring system.
Background technique
VOCs (volatile organic compounds) is a kind of volatile organic compounds, is referred under normal condition
(20 DEG C, 101.3kPa), vapour pressure is in 13.3Pa or more, and boiling point is in 260 DEG C of organic chemicals below.VOCs in atmosphere
Including hydro carbons, oxygen hydro carbons, contain halohydrocarbon, nitrogen hydrocarbon and sulphur hydro carbons, low-boiling multiring aromatic hydrocarbon etc., main source has Industry Waste
Gas, vehicle exhaust etc..Many substances that VOCs includes have carcinogenic, teratogenesis, mutagenicity, have genetoxic, to the danger of human body
Greatly, furthermore there is most of VOCs compounds evil Atmospheric Chemistry to react activity, often engage in condition situation appropriate
Photochemical smog pollution reaction, generates the secondary pollutions such as a large amount of ozone, high mars free radical, aldehyde, ketone, acid, environmentally safe
It causes to seriously threaten.
The VOCs flue gas of usual plant emissions is being discharged into all before being handled for atmosphere, this is just needed to factory
The VOCs content of discharge is detected.Due to including the easily absorption such as methane, non-methane total hydrocarbons and benzene homologues in VOCs flue gas and molten
In the component of water, sampling process easily causes loss, also influences testing result between meeting, while the flue gas in flue gas exhausting pipe line contains
There are an a large amount of impurity such as dust, aqueous vapor etc., aqueous vapor condenses in pipeline will cause constituent part and be dissolved in water, and measurement component is caused to lose
It loses, measurement result inaccuracy；Existing VOCs detector uses single-point sampled measurements, there is measurement inaccuracy.
Summary of the invention
In order to overcome the shortcomings of the prior art described above, the purpose of the utility model is to provide a kind of VOCs on-line monitorings
System improves the accuracy of detection by measuring after multi-point sampling mixing.
To achieve the above object, the technical solution of the utility model is a kind of VOCs on-line monitoring system, including dust mistake
Filter unit, dehumidifier, VOCs analyzer, display equipment and sampling pump, the gas outlet of the dust-filtering unit and the dehumidifying
The air inlet of device is connected to, and the gas outlet of the dehumidifier is connected to the air inlet of the VOCs analyzer, the VOCs analyzer
Outlet pipe be equipped with sampling pump, the VOCs analyzer connect with the display equipment；It further include mixing chamber, for detecting
The flow detector of flue gas flow and several probe tubes for acquiring flue gas in flue gas exhausting pipe line, each probe tube
Front end is located in the flue gas exhausting pipe line, and end is located at outside the flue gas exhausting pipe line；The end of each probe tube with
The mixing chamber connection, the mixing chamber are connected to the air inlet of the dust-filtering unit.
Further, the dust-filtering unit include the first dust filter unit and the second dust filter unit, described first
The two sides of dust filter unit are respectively arranged with the first valve and the second valve, and the two sides of second dust filter unit are respectively set
There are third valve and the 4th valve；First valve and the third valve pass through the outlet of pipeline Yu the mixing chamber respectively
Mouth connection, second valve and the 4th valve pass through pipeline respectively and are connected to the air inlet of the dehumidifier.
Further, be equipped in first dust filter unit and second dust filter unit the first filter screen and
Second filter screen, first filter screen are located at close to the side of the mixing chamber, and second filter screen is located at close to described
The side of dehumidifier.
Further, first filter screen is equipped with the first filter hole, and second filter screen is equipped with the second mistake
Filter opening, the aperture of first filter hole are greater than the aperture of second filter hole.
Further, the position of first filter hole and the position of second filter hole mutually stagger.
Further, the air inlet pipeline of the dehumidifier is equipped with particulate matter detector.
Further, the front end of each probe tube is equipped with filtering sponge.
Further, insulating layer is coated on the outside of each probe tube.
Further, the bottom of the dehumidifier is connected to a bottom comb, and the bottom comb is equipped with peristaltic pump.
Further, the pipeline between the dehumidifier and the VOCs analyzer is equipped with flow control valve.
Compared with prior art, the utility model has the beneficial effects that
(1) VOCs on-line monitoring system provided by the utility model is improved by measuring after multi-point sampling mixing
The accuracy of detection；
(2) VOCs on-line monitoring system provided by the utility model detects VOCs content in flue gas by VOCs analyzer,
Flue gas flow in flue gas exhausting pipe line is detected by flow detector, flue gas is handled for subsequent purification and data reference is provided；
(3) VOCs on-line monitoring system provided by the utility model passes through dust before VOCs enters VOCs analyzer
Filter element can effectively filter out the dust in flue gas to be measured, and the humidity of flue gas to be measured is effectively removed by dehumidifier, provides inspection
The accuracy of survey protects VOCs analyzer and prolongs the service life；
(4) the dust-filtering unit of VOCs on-line monitoring system provided by the utility model is using two dust mistakes in parallel
Filter switching uses, it is ensured that VOCs on-line real time monitoring.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structural schematic diagram for the VOCs on-line monitoring system that the utility model embodiment one provides；
Fig. 2 is the structural schematic diagram for the VOCs on-line monitoring system that the utility model embodiment two provides；
In figure: 1, flue gas exhausting pipe line, 2, filtering sponge, 3, probe tube, 4, mixing chamber, the 5, first valve, the 6, first powder
Dirt filter, the 7, second valve, 8, dehumidifier, 9, flow control valve, 10, VOCs analyzer, 11, sampling pump, 12, flow detection
Instrument, 13, peristaltic pump, 14, display equipment, 15, third valve, the 16, second dust filter unit, the 17, the 4th valve, 18, particulate matter
Detector.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Embodiment one
As shown in Figure 1, the utility model embodiment provides a kind of VOCs on-line monitoring system, including dust-filtering unit,
Dehumidifier 8, VOCs analyzer 10, display equipment 14 and sampling pump 11, the gas outlet of the dust-filtering unit and the dehumidifying
The air inlet of device 8 is connected to, and the gas outlet of the dehumidifier 8 is connected to the air inlet of the VOCs analyzer 10, and the VOCs points
The outlet pipe of analyzer 10 is equipped with sampling pump 11, and the VOCs analyzer 10 is connect with the display equipment 14；It further include cigarette
Gas mixing chamber 4, the flow detector 12 for detecting flue gas flow in flue gas exhausting pipe line 1 and for acquiring the several of flue gas
The front end of probe tube 3, each probe tube 3 is located in the flue gas exhausting pipe line 1, and end is located at the flue gas exhausting pipe line 1
Outside；The end of each probe tube 3 is connected to the flue gas mixing-chamber 4, the flue gas mixing-chamber 4 and the dust-filtering list
The air inlet connection of member.VOCs on-line monitoring system provided by the utility model is measured later by multi-point sampling mixing,
Improve the accuracy of detection；VOCs analyzer 10 and flow detector 12 are connect with display equipment 14 in the present embodiment, are led to
Flue gas flow in the VOCs content in the display display flue gas exhausting pipe line 1 of equipment 14 and flue gas exhausting pipe line 1 is crossed, for the later period
Data reference is provided when purified treatment flue gas；It, can be with by dust-filtering unit in addition, before VOCs enters VOCs analyzer
The dust in flue gas to be measured is effectively filtered out, the humidity of flue gas to be measured is effectively removed by dehumidifier, the accuracy of detection is provided, is protected
Shield VOCs analyzer prolongs its service life.
Further, the dust-filtering unit includes the first dust filter unit 6 and the second dust filter unit 16, and described the
The two sides of one dust filter unit 6 are respectively arranged with the first valve 5 and the second valve 7, the two sides of second dust filter unit 16
It is respectively arranged with third valve 15 and the 4th valve 17；First valve 5 and the third valve 15 respectively by pipeline with
The gas outlet of the flue gas mixing-chamber 4 is connected to, and second valve 7 and the 4th valve 17 are removed by pipeline with described respectively
The air inlet of wet device 8 is connected to.Dust-filtering unit switches by using two dust filter units in parallel to be used, it is ensured that
VOCs on-line real time monitoring causes whole system to cannot achieve VOCs on-line real time monitoring to prevent dust filter unit blocking；Pass through
Two changeable dust filter units filter out the particulate matter in flue gas, then remove moisture, protection VOCs analysis by dehumidifier
Instrument prolongs its service life.
Further, be equipped in the first dust filter unit 6 and second dust filter unit 16 first filter screen and
Second filter screen, first filter screen are located at close to the side of the flue gas mixing-chamber 4, and second filter screen is located at close
The side of the dehumidifier 8.By the way that double-filtration net is arranged, further increases dust filter unit and particulate matter in flue gas is gone
It removes；Maintenance door is equipped on first dust filter unit 6 and the second dust filter unit 16, the first filter screen and the second filter screen are removable
That unloads is fixed in the first dust filter unit 6 and the second dust filter unit 16, when on the filter screen of one of dust filter unit
Filter hole when being blocked by particulate matter, switching uses another dust filter unit, opens the maintenance door of the dust filter unit, carries out
Filter screen is replaced, it is easy to operate, and easy access, replaced filter screen can utilize again after being cleaned.Wherein, first
The porosity of filter screen and the second filter screen is 50~80%.
Further, first filter screen is equipped with the first filter hole, and second filter screen is equipped with the second mistake
Filter opening, the aperture of first filter hole are greater than the aperture of second filter hole.The aperture of first filter hole is 1~20 μm,
The aperture of second filter hole is 0.02~0.1 μm.
Further, the position of first filter hole and the position of second filter hole mutually stagger, and in this way may be used
Preferably particulate matter to be trapped on filter screen, filter efficiency is improved.
Further, the air inlet pipeline of the dehumidifier 8 is equipped with particulate matter detector 18.Particulate matter detector 18 is located at
It between dehumidifier 8 and the second valve 7, also is located between dehumidifier 8 and the 4th valve 17, particulate matter detector 18 is for detecting cigarette
Particle concentration when gas enters before dehumidifier can detecte the particle concentration that partial size is greater than 0.01 μm；According to particulate matter
The particle concentration for the flue gas that detector 18 detects uses to carry out the switching of dust filter unit.Particulate matter detector 18 and display
Equipment 14 connects, and the particle concentration of flue gas in flue gas exhausting pipe line 1 is shown by display equipment 14.As a kind of embodiment party
Formula switches dust filter unit when particle concentration is greater than 5% in flue gas.
Further, the front end of each probe tube 3 is equipped with filtering sponge 2.Fall cigarette by filtering 2 primary filtration of sponge
Large particle in gas.
Further, each 3 outside of the probe tube is coated with insulating layer.Between probe tube 3 and VOCs analyzer 10
Pipeline on be equipped with insulating layer, prevent flue gas condensing；It is additionally provided with heating device in mixing chamber 4, guarantees the temperature of flue gas, is prevented
Only flue gas condensing impacts the accuracy of measurement result.
Further, the bottom of the dehumidifier 8 is connected to a bottom comb, and the bottom comb is equipped with peristaltic pump 13, is used
Condensate liquid in discharge dehumidifier 8 in time.
Further, the pipeline between the dehumidifier 8 and the VOCs analyzer 10 is equipped with flow control valve 9, adjusts
Section enters the flue gas flow rate in VOCs analyzer 10, guarantees that flue gas is stablized and enters in VOCs analyzer 10, excludes because of air-flow shakiness
Data fluctuations caused by fixed.
Embodiment two
As shown in Fig. 2, the utility model embodiment provides a kind of VOCs on-line monitoring system, including VOCs analyzer 10,
Show that equipment 14 and sampling pump 11, the outlet pipe of the VOCs analyzer 10 are equipped with sampling pump 11, the VOCs analyzer
10 connect with the display equipment 14；It further include flue gas mixing-chamber 4, the stream for detecting flue gas flow in flue gas exhausting pipe line 1
Amount detector 12, several probe tubes 3 for acquiring flue gas, for remove several dust-filtering units of particulate matter in flue gas with
And several dehumidifiers 8 for removing moisture content in flue gas, the probe tube 3, the dust-filtering unit and the dehumidifier 8 one
One is correspondingly arranged；The front end of each probe tube 3 is located in the flue gas exhausting pipe line 1, and end is located at the smoke discharge pipe
Outside road 1；The end of each probe tube 3 is connected to the air inlet of the corresponding dust-filtering unit respectively, each dust
The gas outlet of filter element is connected to the air inlet of corresponding dehumidifier 8 respectively, and each gas outlet is mixed with the flue gas
Room 4 is connected to, and the flue gas mixing-chamber 4 is connected to the air inlet of the VOCs analyzer 10, the flow detector 12 with it is described
Show that equipment 14 connects.This implementation be first by the flue gas come in each probe tube first pass through dust-filtering unit filter out to
The dust surveyed in flue gas is effectively removed by dehumidifier the humidity of flue gas to be measured, then is mixed, and using multi-point sampling, is improved
The accuracy of testing result.
Further, the dust-filtering unit includes the first dust filter unit 6 and the second dust filter unit 16, and described the
The two sides of one dust filter unit 6 are respectively arranged with the first valve 5 and the second valve 7, the two sides of second dust filter unit 16
It is respectively arranged with third valve 15 and the 4th valve 17；First valve 5 and the third valve 15 respectively by pipeline with
The end of the probe tube 3 is connected to, and second valve 7 and the 4th valve 17 pass through pipeline and the dehumidifier 8 respectively
Air inlet connection.Dust-filtering unit switches by using two dust filter units in parallel to be used, it is ensured that VOCs exists
Line real-time monitoring causes whole system to cannot achieve VOCs on-line real time monitoring to prevent dust filter unit blocking.
Further, be equipped in the first dust filter unit 6 and second dust filter unit 16 first filter screen and
Second filter screen, first filter screen are located at close to the side of the probe tube 3, and second filter screen is located at close to described
The side of dehumidifier 8.
Further, first filter screen is equipped with the first filter hole, and second filter screen is equipped with the second mistake
Filter opening, the aperture of first filter hole are greater than the aperture of second filter hole；The position of first filter hole with it is described
The position of second filter hole mutually staggers.
Further, the air inlet pipeline of the dehumidifier 8 is equipped with particulate matter detector 18.Particulate matter detector 18 is used for
Particle concentration when detection flue gas enters before dehumidifier, according to the particle concentration for the flue gas that particulate matter detector 18 detects
It is used to carry out the switching of dust filter unit.Particulate matter detector 18 is connect with display equipment 14, is shown by display equipment 14
The particle concentration of flue gas in flue gas exhausting pipe line 1.
Further, the front end of each probe tube 3 be equipped with filtering sponge 2 carry out primary filtration；Outside each probe tube 3
Side is coated with insulating layer, prevents flue gas condensing.
Further, the bottom of the dehumidifier 8 is connected to a bottom comb, and the bottom comb is equipped with peristaltic pump 13, row
Condensate liquid out.
Further, the pipeline between the mixing chamber 4 and the VOCs analyzer 10 is equipped with flow control valve 9, adjusts
Save flue gas flow rate.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of VOCs on-line monitoring system, including dust-filtering unit, dehumidifier, VOCs analyzer, display equipment and sampling
Pump, the gas outlet of the dust-filtering unit is connected to the air inlet of the dehumidifier, the gas outlet of the dehumidifier with it is described
The air inlet of VOCs analyzer is connected to, and the outlet pipe of the VOCs analyzer is equipped with sampling pump, the VOCs analyzer with
The display equipment connection；It is characterized by also including mixing chambers, the flow for detecting flue gas flow in flue gas exhausting pipe line
Detector and several probe tubes for acquiring flue gas, the front end of each probe tube are located in the flue gas exhausting pipe line,
End is located at outside the flue gas exhausting pipe line；The end of each probe tube is connected to the mixing chamber, the mixing chamber with
The air inlet of the dust-filtering unit is connected to.
2. a kind of VOCs on-line monitoring system as described in claim 1, it is characterised in that: the dust-filtering unit includes the
The two sides of one dust filter unit and the second dust filter unit, first dust filter unit are respectively arranged with the first valve and second
The two sides of valve, second dust filter unit are respectively arranged with third valve and the 4th valve；First valve and described
Third valve passes through pipeline respectively and is connected to the gas outlet of the mixing chamber, and second valve and the 4th valve lead to respectively
Pipeline is crossed to be connected to the air inlet of the dehumidifier.
3. a kind of VOCs on-line monitoring system as claimed in claim 2, it is characterised in that: first dust filter unit and institute
It states and is equipped with the first filter screen and the second filter screen in the second dust filter unit, first filter screen is located at close to the mixing
The side of room, second filter screen are located at close to the side of the dehumidifier.
4. a kind of VOCs on-line monitoring system as claimed in claim 3, it is characterised in that: first filter screen is equipped with the
One filter hole, second filter screen are equipped with the second filter hole, and the aperture of first filter hole is greater than second filtering
The aperture in hole.
5. a kind of VOCs on-line monitoring system as claimed in claim 4, it is characterised in that: the position of first filter hole with
The position of second filter hole mutually staggers.
6. a kind of VOCs on-line monitoring system as claimed in claim 2, it is characterised in that: on the air inlet pipeline of the dehumidifier
Equipped with particulate matter detector.
7. a kind of VOCs on-line monitoring system as described in claim 1, it is characterised in that: the front end of each probe tube is all provided with
There is filtering sponge.
8. a kind of VOCs on-line monitoring system as described in claim 1, it is characterised in that: coated on the outside of each probe tube
There is insulating layer.
9. a kind of VOCs on-line monitoring system as described in claim 1, it is characterised in that: the bottom of the dehumidifier and a bottom
Comb connection, the bottom comb are equipped with peristaltic pump.
10. a kind of VOCs on-line monitoring system as described in claim 1, it is characterised in that: the dehumidifier and the VOCs
Pipeline between analyzer is equipped with flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821767899.XU CN209117529U (en) | 2018-10-30 | 2018-10-30 | A kind of VOCs on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821767899.XU CN209117529U (en) | 2018-10-30 | 2018-10-30 | A kind of VOCs on-line monitoring system |
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| Publication Number | Publication Date |
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| CN209117529U true CN209117529U (en) | 2019-07-16 |
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ID=67202948
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| CN201821767899.XU Active CN209117529U (en) | 2018-10-30 | 2018-10-30 | A kind of VOCs on-line monitoring system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632261A (en) * | 2019-11-01 | 2019-12-31 | 佛山市鼎科科技发展有限公司 | Industrial VOC on-line monitoring device |
| CN112485071A (en) * | 2020-11-18 | 2021-03-12 | 浙江哈米尔顿环保科技有限公司 | VOCs volatile organic compounds on-line monitoring system |
| CN112540151A (en) * | 2019-09-23 | 2021-03-23 | 中国石油天然气集团有限公司 | Device and method for detecting volatile gas in medium |
| WO2021056657A1 (en) * | 2019-09-25 | 2021-04-01 | 广州禾信仪器股份有限公司 | Device and method for performing continuous online sampling and monitoring of vocs at multiple points |
| CN115591332A (en) * | 2022-11-11 | 2023-01-13 | 陕西陕煤曹家滩矿业有限公司（Cn） | Dust removal assembly, dust remover and dust removal method for ore treatment workshop |
| WO2023077779A1 (en) * | 2021-11-04 | 2023-05-11 | 二重（德阳）重型装备有限公司 | On-line monitoring system and method for high-temperature garbage pyrolysis gas |
-
2018
- 2018-10-30 CN CN201821767899.XU patent/CN209117529U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112540151A (en) * | 2019-09-23 | 2021-03-23 | 中国石油天然气集团有限公司 | Device and method for detecting volatile gas in medium |
| WO2021056657A1 (en) * | 2019-09-25 | 2021-04-01 | 广州禾信仪器股份有限公司 | Device and method for performing continuous online sampling and monitoring of vocs at multiple points |
| CN110632261A (en) * | 2019-11-01 | 2019-12-31 | 佛山市鼎科科技发展有限公司 | Industrial VOC on-line monitoring device |
| CN112485071A (en) * | 2020-11-18 | 2021-03-12 | 浙江哈米尔顿环保科技有限公司 | VOCs volatile organic compounds on-line monitoring system |
| WO2023077779A1 (en) * | 2021-11-04 | 2023-05-11 | 二重（德阳）重型装备有限公司 | On-line monitoring system and method for high-temperature garbage pyrolysis gas |
| CN115591332A (en) * | 2022-11-11 | 2023-01-13 | 陕西陕煤曹家滩矿业有限公司（Cn） | Dust removal assembly, dust remover and dust removal method for ore treatment workshop |
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