CN210720142U - Online monitoring system for concentration of condensable particles in flue gas - Google Patents
Online monitoring system for concentration of condensable particles in flue gas Download PDFInfo
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- CN210720142U CN210720142U CN201921385517.1U CN201921385517U CN210720142U CN 210720142 U CN210720142 U CN 210720142U CN 201921385517 U CN201921385517 U CN 201921385517U CN 210720142 U CN210720142 U CN 210720142U
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Abstract
The utility model relates to a flue gas can condense online monitoring system of particulate matter concentration relates to environmental monitoring technical field, because current flue gas can condense the unable online monitoring that realizes of particulate matter concentration, leads to follow-up data analysis to have great limitation. The scheme comprises an ion concentration detection device and a suspended matter concentration detection device, wherein the suspended matter concentration detection device is connected to the rear end of the ion concentration detection device; the device also comprises an air exhaust mechanism, a flue gas flow detection piece, a condensation mechanism, an ultrafine particle capturing mechanism and a collected liquid flow metering device, wherein the air exhaust mechanism is sequentially connected to the front end of the ion concentration detection device along the flow direction of flue gas; the suspended matter concentration detection device comprises a detection channel and a suspended matter concentration detection piece arranged on the detection channel. The scheme can realize on-line real-time monitoring of the concentration of condensable particles, thereby being beneficial to subsequent data analysis.
Description
Technical Field
The utility model belongs to the technical field of the environmental monitoring technique and specifically relates to an online monitoring system of particulate matter concentration can condense to flue gas is related to.
Background
Condensable particles refer to a type of particles which are in a gaseous state at a sampling position (a flue gas channel) in exhaust gas of a fixed pollution source and are condensed into a liquid state or a solid state within seconds of temperature reduction under the environmental condition after leaving a flue. The condensable particles are in a gaseous state in the flue, so that corresponding dust removal equipment (electrostatic or bag-type dust remover) has no effect on the gas, and the gas can penetrate through a filter medium used in the traditional particle monitoring method.
Therefore, the on-line detection of the condensable particles is very difficult, and the existing detection method of the condensable particles is also in a sampling detection mode, so that the on-line real-time monitoring cannot be realized, and the subsequent data analysis has great limitation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an online monitoring system of particulate matter concentration can condense to flue gas can realize the concentration of particulate matter can condense to flue gas in the online real-time supervision flue gas to do benefit to subsequent data analysis.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
an on-line monitoring system for the concentration of condensable particulate matters in flue gas comprises an ion concentration detection device and a suspended matter concentration detection device, wherein the suspended matter concentration detection device is connected to the rear end of the ion concentration detection device; the device also comprises an air exhaust mechanism, a flue gas flow detection piece, a condensation mechanism, an ultrafine particle capturing mechanism and a collected liquid flow metering device, wherein the air exhaust mechanism is sequentially connected to the front end of the ion concentration detection device along the flow direction of flue gas; the suspended matter concentration detection device comprises a detection channel and a suspended matter concentration detection piece arranged on the detection channel.
By adopting the technical scheme, the particle coagulable material has the following characteristics: the gas state is at the sampling position (flue gas channel), and the gas state can be condensed into liquid state or solid state within seconds after leaving the flue and reducing the temperature under the environmental condition; therefore, according to the scheme, the flue gas is condensed to obtain the collecting liquid mixed with the solid insoluble matters, the collecting liquid is subjected to detection of two data, namely collecting liquid flow rate B and collecting liquid ion concentration C, and the detected flue gas flow rate A before collection, so that the soluble matter concentration D1 in the collecting liquid can be calculated, and the concentration of the soluble matters in the condensed particulate matters can be obtained; then, the suspended matter concentration E in the collected liquid can be detected through a suspended matter concentration detection mechanism, and the concentration D2 of insoluble matters in the collected liquid can be calculated by combining the data flue gas flow A and the collected liquid flow B before the data flue gas flow A and the collected liquid flow B, namely the concentration of the insoluble matters in the condensed particulate matters; finally, the soluble matter concentration D1 and the insoluble matter concentration D2 are added to obtain the total condensable particle concentration.
And because whole monitoring process is on-line monitoring, then can be more accurate, real-time understanding can condense the concentration of particulate matter to do benefit to subsequent data analysis.
Preferably: suspended solid concentration detection mechanism still carries out clear ultrasonic cleaning subassembly including being used for carrying out the suspended solid concentration detection piece, and the ultrasonic cleaning subassembly is including connecting in the ultrasonic vibrator of test channel, the ultrasonic vibrator that is connected with ultrasonic vibrator.
Through adopting above-mentioned technical scheme, the clean subassembly of ultrasonic wave can regularly clean suspended solid concentration detection spare to improve and detect the accuracy.
Preferably: and a condensation secondary mechanism is connected between the superfine particle capturing mechanism and the collecting liquid flow metering device.
Through adopting above-mentioned technical scheme, condensation secondary mechanism can catch mechanism exhaust flue gas and collect once more to the particulate matter that can condense is gone out in more abundant condensation, improves collection efficiency.
Preferably: the ion concentration detection device comprises an ultrasonic cleaning assembly for cleaning the ion concentration detection device
Through adopting above-mentioned technical scheme, this ultrasonic cleaning subassembly can carry out periodic cleaning to ion concentration detection device.
To sum up, the utility model discloses a beneficial technological effect does:
1. according to the scheme, according to the characteristics of condensable particles, firstly condensing and capturing the flue gas to collect a collection liquid containing soluble matters and insoluble matters, and then respectively detecting and calculating to obtain the total concentration of the condensable particles; the scheme can realize on-line real-time monitoring of the concentration of condensable particles in the flue gas, thereby facilitating subsequent data analysis;
2. in this scheme, the clean subassembly of ultrasonic wave can regularly clean suspended solid concentration detection spare, ion concentration detection device to improve and detect the accuracy.
Drawings
Fig. 1 is a schematic diagram of a connection relationship in the first embodiment of the present invention.
Fig. 2 is a schematic view of a suspended matter concentration detection mechanism according to a first embodiment of the present invention.
Fig. 3 is a schematic view of a suspended matter concentration detection mechanism according to a second embodiment of the present invention.
In the figure, 1, an air exhaust mechanism; 2. a flue gas flow rate detection member; 3. a condensing mechanism; 4. an ultrafine particulate matter trapping mechanism; 5. A condensing secondary mechanism; 6. an ion concentration detection device; 61. a collected liquid flow metering device; 7. a suspended matter concentration detection mechanism; 71. a suspended matter concentration detection member; 72. a detection channel; 73. an ultrasonic cleaning assembly; 731. an ultrasonic vibrator; 732. an ultrasonic vibrator; 8. a flue gas channel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows: referring to fig. 1, the system for monitoring the concentration of condensable particles in flue gas disclosed by the present invention includes an ion concentration detection device 6 and a suspended matter concentration detection device 7, wherein the suspended matter concentration detection device 7 is connected to the rear end of the ion concentration detection device 6; the device also comprises an air exhaust mechanism 1, a flue gas flow detection part 2, a condensation mechanism 3, an ultrafine particle capturing mechanism 4, a condensation secondary mechanism 5, a waste gas discharge mechanism and a collected liquid flow metering device 61, wherein the air exhaust mechanism 1 is sequentially connected to the front end of the ion concentration detection device 6 along the flue gas flowing direction;
the gas extraction mechanism 1 can extract part of the flue gas in the flue gas channel 8, the gas extraction mechanism 1 is a sampling pump, the input port of the sampling pump is connected with a sampling probe, and the sampling probe extends into the flue gas channel 8; the flue gas output from the air exhaust mechanism 1 can be guided into the condensing mechanism 3 through a pipeline, and the flue gas flow detection piece 2 is a flue gas flowmeter and is used for detecting the flue gas flow A; the detected smoke is discharged into a condensing mechanism 3, and the condensing mechanism 3 can condense the smoke, so that condensable particles are condensed into a mixture of liquid and solid; the liquid and solid mixture enters the superfine particle catching mechanism 4 and is caught to form flowing collecting liquid; the collection liquid enters the secondary condensing mechanism 5 along with the flue gas, and the secondary condensing mechanism 5 can further condense the flue gas so as to collect condensable particles more fully; the collected liquid is accompanied with the flue gas and then enters the waste gas discharge mechanism to realize the discharge of the flue gas, and only the collected liquid is left; the collected liquid sequentially passes through a collected liquid flow metering device 61, an ion concentration detection device 6 and a suspended matter concentration detection device 7 through a pipeline, the collected liquid flow metering device 61 and the ion concentration detection device 6 are respectively a solution micro-flow meter and an ion concentration meter, so that the collected liquid flow B and the collected liquid ion concentration C can be detected, and the soluble matter concentration D1 in the collected liquid can be calculated according to a formula D1= C B/A; the suspended matter concentration E in the collected liquid can be detected by the suspended matter concentration detection mechanism 7, and the insoluble matter concentration D2 in the collected liquid can be calculated according to a formula D2= E B/A; finally, the total concentration of condensable particles D3 can be calculated according to the formula D3= D1+ D2.
The condensing mechanism 3 can be a heat exchanger or other equipment capable of cooling the flue gas in the pipeline.
The ultrafine particle capturing mechanism 4 comprises a conductive sleeve, a conductive mesh cylinder arranged in the conductive sleeve in a penetrating manner, and a power supply used for enabling the conductive sleeve to be positively charged and enabling the conductive mesh cylinder to be negatively charged, the conductive mesh cylinder is connected to the outlet of the condensing mechanism 3, and the conductive sleeve is connected to the inlet of the condensing secondary mechanism 5.
After the power supply is switched on, a strong electric field can be formed between the conductive sleeve and the conductive mesh cylinder to release negative ions, and the condensable particles introduced into the conductive mesh cylinder can approach the conductive sleeve along with the negative ions, so that the more the condensable particles gather on the inner wall of the conductive sleeve, the more the condensable particles are finally introduced into the condensation secondary mechanism 5 to capture the condensable particles in a solid-liquid mixed state.
The secondary condensing mechanism 5 can be a heat exchanger or other equipment capable of cooling the flue gas in the pipeline.
The waste gas discharge mechanism comprises a gas-liquid separator, and the flue gas can be directly discharged from the waste gas discharge port.
Referring to fig. 1 and 2, the suspended matter concentration detection means 7 includes: the suspended matter concentration detection device comprises a detection channel 72 and a suspended matter concentration detection piece 71 arranged on the detection channel 72, wherein the suspended matter concentration detection piece 71 can be an online spectrophotometer; the suspended matter concentration detecting member 71 detects the insoluble matter concentration D2 in the collection liquid in the detection passage 72.
The implementation principle of the embodiment is as follows: the condensable particles have the following characteristics: the gas state is at the sampling position (the flue gas channel 8), and the gas state can be condensed into liquid state or solid state within seconds of the temperature reduction of the environmental condition after leaving the flue; therefore, according to the scheme, the flue gas is condensed to obtain the collecting liquid mixed with the solid insoluble matters, the collecting liquid is subjected to detection of two data, namely collecting liquid flow rate B and collecting liquid ion concentration C, and the detected flue gas flow rate A before collection, so that the soluble matter concentration D1 in the collecting liquid can be calculated, namely the concentration of the condensable particulate matters condensed into liquid can be calculated; the concentration D2 of insoluble matter in the collected liquid, i.e., the concentration of condensable particulate matter condensed into a solid state, can then be detected by the suspended matter concentration detection means 7; finally, the soluble matter concentration D1 and the insoluble matter concentration D2 are added to obtain the total condensable particle concentration.
And because whole monitoring process is on-line monitoring, then can be more accurate, real-time understanding can condense the concentration of particulate matter to do benefit to subsequent data analysis.
Example two: referring to fig. 2, the present embodiment differs from the first embodiment only in that the suspended matter concentration detection mechanism 7 further includes an ultrasonic cleaning assembly 73, and the ultrasonic cleaning assembly 73 includes: an ultrasonic vibrator 731 connected to the detection channel 72, an ultrasonic vibrator 732 connected to the ultrasonic vibrator 731; the ultrasonic cleaning assembly 73 may periodically clean the probe 712, thereby improving inspection accuracy.
It is worth to be noted that the ion concentration detection device 6 also includes an ultrasonic cleaning component, an ultrasonic vibrator of the ultrasonic cleaning component is located near the ion concentration meter, and an ultrasonic vibrator of the ultrasonic cleaning component is connected with the ultrasonic vibrator. The ultrasonic cleaning assembly can periodically clean the ion concentration detection device.
The implementation principle of the embodiment is as follows: the same as the first embodiment.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (4)
1. The utility model provides an on-line monitoring system of particulate matter concentration that flue gas can condense which characterized in that: comprises an ion concentration detection device (6) and a suspended matter concentration detection device (7), wherein the suspended matter concentration detection device (7) is connected to the rear end of the ion concentration detection device (6); the device is characterized by also comprising an air exhaust mechanism (1) which is sequentially connected to the front end of the ion concentration detection device (6) along the flow direction of flue gas, a flue gas flow detection piece (2) for detecting the flow of flue gas, a condensation mechanism (3) for condensing out collection liquid, an ultrafine particle capturing mechanism (4) for capturing ultrafine particles which are not collected after condensation, and a collection liquid flow metering device (61); the suspended matter concentration detection device (7) comprises a detection channel (72) and a suspended matter concentration detection piece (71) arranged on the detection channel (72).
2. The on-line monitoring system for the concentration of the condensable particulate matters in the flue gas as claimed in claim 1, wherein: the suspended matter concentration detection device (7) further comprises an ultrasonic cleaning component (73) used for cleaning the suspended matter concentration detection piece (71), wherein the ultrasonic cleaning component (73) comprises an ultrasonic vibrator (731) connected to the detection channel (72) and an ultrasonic vibrator (732) connected with the ultrasonic vibrator (731).
3. The on-line monitoring system for the concentration of the condensable particulate matters in the flue gas as claimed in claim 1, wherein: and a condensation secondary mechanism (5) is connected between the superfine particle capturing mechanism (4) and the collecting liquid flow metering device (61).
4. The on-line monitoring system for the concentration of the condensable particulate matters in the flue gas as claimed in claim 1, wherein: the ion concentration detection device (6) comprises an ultrasonic cleaning component for cleaning the ion concentration detection device (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385517.1U CN210720142U (en) | 2019-08-24 | 2019-08-24 | Online monitoring system for concentration of condensable particles in flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385517.1U CN210720142U (en) | 2019-08-24 | 2019-08-24 | Online monitoring system for concentration of condensable particles in flue gas |
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| CN210720142U true CN210720142U (en) | 2020-06-09 |
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| CN201921385517.1U Active CN210720142U (en) | 2019-08-24 | 2019-08-24 | Online monitoring system for concentration of condensable particles in flue gas |
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