CN204679877U - Pollution source VOC concentration and total emission volumn real-time monitoring system - Google Patents
Pollution source VOC concentration and total emission volumn real-time monitoring system Download PDFInfo
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- CN204679877U CN204679877U CN201520426720.4U CN201520426720U CN204679877U CN 204679877 U CN204679877 U CN 204679877U CN 201520426720 U CN201520426720 U CN 201520426720U CN 204679877 U CN204679877 U CN 204679877U
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Abstract
The utility model relates to a kind of pollution source VOC concentration and total emission volumn real-time monitoring system, comprises waste gas sampling unit, waste gas pretreatment unit, VOC detecting unit, exhaust gas parameters measuring unit, data processing unit, blowback unit, alignment unit, communication unit and centralized control unit etc.; The output of waste gas sampling unit connects VOC detecting unit through waste gas pretreatment unit, the output of exhaust gas parameters measuring unit and VOC detecting unit connects data processing unit altogether, the output of data processing unit connects communication unit, blowback unit and alignment unit, and communication unit carries out data transmission by wireless or wired mode and centralized control unit.The utility model adopts photoionization detector to detect concentration and the total amount of the characteristic contamination of blowdown enterprise discharge, and then monitors in real time VOC concentration and total emission volumn.Detection comprises the multiple compounds such as aromatics, ketone, aldehydes, alcohols, ammonia and amine, halogenated hydrocarbon, sulfo-hydro carbons, unsaturated hydro carbons.
Description
Technical field
The utility model relates to a kind of pollution monitor system, specifically a kind of pollution source VOC concentration and total emission volumn real-time monitoring system.
Background technology
VOC is the english abbreviation of volatile organic compounds (volatile organic compounds), VOC on common meaning refers to volatile organic matter, and the VOC on environment protection significance refers to an active class volatile organic matter, that class volatile organic matter of harm namely can be produced.
VOC(and volatile organic compounds) there is tremendous influence to health.When the VOC in room reaches certain density time, people just there will be headache, Nausea and vomiting, the symptom such as weak at short notice, also can twitch or go into a coma time serious.VOC can hurt the liver of people, kidney, brain and nervous system, causes the serious consequences such as failure of memory.
VOC is the important sources forming PM2.5 simultaneously, and it is estimated, China VOC discharge capacity is greatly about about 2000 to 3,000 ten thousand tons, and therefore, in order to environmental protect quality, the discharge of control VOC has been an imperative job.But a still weak link in the discharge work of current controls VOC.
A large amount of VOC gas is discharged in China's industrial processes, it is very important and necessary for carrying out detection and control to such gas purging concentration and total amount, and conventional detection method is that spot sampling adds laboratory assays, the method needs artificial sample, lab analysis, the monitoring frequency of VOC being discharged to enterprise is low, and detection data need can obtain for a long time, can not accomplish real-time monitoring to the VOC discharge of enterprise.
In addition, an effective VOC checkout equipment needs to possess the ability analyzing tens of kinds of compound effective constituents, to tackle the user demand of different detected objects, therefore, its price often in 1,000,000 yuan, and if this higher-priced checkout equipment sets up an office that layout detects in the blowdown of each pollutant enterprise, be inconceivable, also do not accomplish, this also just causes the concentration of the characteristic contamination of pollution source and the Real-Time Monitoring of total emission volumn is not attainable substantially at all.
Utility model content
The purpose of this utility model is just to provide a kind of pollution source VOC concentration and total emission volumn real-time monitoring system, to solve conventional sense mode can not accomplish monitoring in real time problem to the VOC discharge of enterprise.
The utility model is achieved in that a kind of pollution source VOC concentration and total emission volumn real-time monitoring system, includes:
Waste gas sampling unit, connects with waste gas pretreatment unit and blowback unit respectively, samples for the waste gas discharged measured point, filter and heats;
Waste gas pretreatment unit, connects with described waste gas sampling unit, VOC detecting unit and alignment unit respectively, for carrying out dehumidification by condensation process to the waste gas sample gathered;
VOC detecting unit, connects with described waste gas pretreatment unit and data processing unit respectively, for detecting the VOC concentration in waste gas sample after treatment, and detection data is outputted to data processing unit;
Exhaust gas parameters measuring unit, connects with data processing unit and blowback unit respectively, and the waste gas for discharging measured point carries out the detection of temperature, pressure, flow and humidity, and detection data are outputted to data processing unit;
Data processing unit, connect with described VOC detecting unit, described exhaust gas parameters measuring unit, blowback unit and communication unit respectively, for regularly starting the action of blowback unit, and data processing being carried out to the detection data of input, then data message being sent to centralized control unit;
Blowback unit, connect with described data processing unit, described waste gas sampling unit and described exhaust gas parameters measuring unit respectively, point two-way carries out regular blowback cleaning respectively to the surveying instrument in the sampling gas circuit in described waste gas sampling unit and described exhaust gas parameters measuring unit;
Communication unit, connects with described data processing unit, and is connected with centralized control unit by wired or wireless mode, and the data message for being exported by described data processing unit is long-range is sent to centralized control unit; And
Centralized control unit, is connected with described communication unit by wired or wireless mode, for receiving the data message exported by data processing unit, to realize the concentration of VOC in measured point institute discharging waste gas and the real-time monitoring of total emission volumn.
The utility model also includes:
Alignment unit, connects with described waste gas pretreatment unit, for carrying out regular calibration by described waste gas pretreatment unit to the surveying instrument in described VOC detecting unit.
In described waste gas sampling unit, be provided with heating arrangement, filtration unit and cooling and dehumidifying device, described heating arrangement heats the waste gas sample gathered, and described cooling and dehumidifying device carries out cooling and dehumidifying process to the waste gas sample after heating.
Described VOC detecting unit uses photoionization detector to monitor the VOC in gathered waste gas, detects and comprise aromatics, ketone, aldehydes, ammonia and amine, halogenated hydrocarbon, sulfo-hydro carbons, unsaturated hydro carbons and alcohols etc.; Wherein, aromatics is the series compound containing phenyl ring, as benzene, toluene, naphthalene etc.; Ketone and aldehydes are the compounds containing C=O key, as acetone etc.; Ammonia and amine are the hydrocarbons containing N, as dimethyl amine etc.; Unsaturated hydro carbons is as alkene etc.
Described centralized control unit gathers received data message, analyze and overload alarm, and the concentration of VOC wherein and total emission volumn can be converted into the concentration of the characteristic contamination that measured point (i.e. blowdown enterprise) is discharged and total amount is recorded and shows.
Although detected by the VOC detecting unit in the present invention is organic total amount, but the organism discharged due to certain pollution source of each blowdown enterprise is specific, thus, the concentration of the VOC detected by VOC detecting unit detects and total emission volumn, actual is exactly concentration and the total emission volumn of the characteristic contamination that this specific source discharges, like this, the present invention just need not configure the main equipment differentiated various Organic Pollutants in VOC detecting unit, only retain the Concentration Testing of VOC and the function of measuring of total emission volumn, in conjunction with the concrete constituent analysis in advance to the tested gas of each measured point, just can clearly draw the concentration of this measured point characteristic contamination and total emission volumn actual be exactly Concentration Testing and the total emission volumn of the VOC that VOC detecting unit detects.Like this, the present invention just can utilize only has the photoionization detector of thousands of first price can complete the concentration of characteristic contamination and the monitoring work of total emission volumn, makes to become possibility to the concentration of the characteristic contamination of pollution source and the Real-Time Monitoring of total emission volumn.Key of the present invention is just this.
Feature of the present utility model is:
1, waste gas sampling unit can carry out whole process heating to gathered waste gas, thus the particle effectively removed in gas and moisture are to the interference of follow-up measurement, is conducive to improving accuracy of detection, reduces measuring error;
2, exhaust gas parameters measuring unit synchronously can detect temperature, pressure, the parameter such as humidity and flow velocity of waste gas, and then monitors in real time the total emission volumn of VOC;
3, alignment unit is set, online real time calibration can be carried out to the surveying instrument in exhaust gas parameters measuring unit, ensure the accuracy detecting data;
4, VOC detecting unit uses photoionization detector to detect organic gas, and detect kind many, detection sensitivity is high;
5, according to user's request, replaceable fid detector.
The utility model adopts condensation method to measure flue gas/exhaust gas humidity, and measuring accuracy is high, and user's maintenance maintenance is easy, and equipment set operation cost is low, can show minute mean value of Monitoring Data in real time, Monitoring Data can be derived Excel document; Oxygen measurement uses zirconia sensor, data stabilization, and accuracy is high, and the life-span is long; PID UV-DOAS the VOC monitoring mode user of FTIR optional, monitor object according to user and functional requirement is selected; Adopt subcompact board computer, dynamic display gas absorption curve.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present utility model.
Fig. 2 is the system architecture diagram of the utility model embodiment.
Fig. 3 is the partial structurtes schematic diagram of field layout of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises: the parts such as waste gas sampling unit, waste gas pretreatment unit, VOC detecting unit, exhaust gas parameters measuring unit, data processing unit, blowback unit, alignment unit, communication unit and centralized control unit; Wherein, the output termination waste gas pretreatment unit of waste gas sampling unit, the output termination VOC of waste gas pretreatment unit detects single; The output terminal of exhaust gas parameters measuring unit and VOC detecting unit receives the data input pin of data processing unit altogether, and the data output end of data processing unit connects communication unit; The two path control signal output terminal of data processing unit, a road connects blowback unit, and another road connects alignment unit; Blowback unit has two-way to export, and wherein a road connects waste gas sampling unit, and another road connects exhaust gas parameters measuring unit; The output of alignment unit connects waste gas pretreatment unit; Communication unit carries out data transmission by wireless or wired mode and centralized control unit.
Waste gas sampling unit includes heating arrangement, filtration unit, cooling and dehumidifying device and complex samples pipeline (also known as " heat tracing pipe "), heating arrangement heats the waste gas sample gathered by measured point, filtration unit filters waste gas sample, and cooling and dehumidifying device carries out cooling and dehumidifying process to waste gas sample.Also heating arrangement and filtration unit can be combined with the sampling head in waste gas sampling unit, form a kind of heating and filtering sampling head, to simplify structure.
In waste gas pretreatment unit, be provided with flue gas condensing filtration unit, with to collection the waste gas sample be heat treatment carries out dehumidification by condensation process.
VOC detecting unit comprises a photoionization detector (being called for short PID).Photoionization detector is that employing uviol lamp carrys out ionization of sample gas, thus detects its concentration.When sample molecule absorbs high ultraviolet energy, molecule is ionized to the ion of band positive and negative charge, and these ions are received by charge sensor sense, forms current signal.The just sub-fraction VOC molecule of ultraviolet ionization, therefore after ionization, they can also be combined into complete molecule, to be further analyzed sample.VOC detecting unit in the present invention can detect the multiple compounds such as aromatics, ketone, aldehydes, ammonia and amine, halogenated hydrocarbon, sulfo-hydro carbons, unsaturated hydro carbons and alcohols.
Exhaust gas parameters measuring unit comprises exhaust gas temperature analyzer, exhaust gas pressure analyzer, exhaust gas flow analyzer and waste gas humidity measuring instrument etc., the detection of temperature, pressure, flow and humidity can be carried out the waste gas of measured point discharge, and detection data are transported to data processing unit.
Data processing unit is used for carrying out data processing respectively to the detection data from exhaust gas parameters measuring unit and the input of VOC detecting unit, and the data message after process is sent to centralized control unit by communication unit is long-range.
Communication unit is long-distance radio communication module, can set up wired or wireless communication contact with centralized control unit, is sent to centralized control unit so that the data message exported by data processing unit is long-range.
Blowback unit includes two independently blowback systems, for carrying out regular blowback cleaning to the sampling gas circuit in waste gas sampling unit and the surveying instrument in exhaust gas parameters measuring unit.
Alignment unit is the Calibration System of a gas detecting instrument, for carrying out regular calibration to PID.Calibration unit is communicated to VOC detecting unit by waste gas pretreatment unit by the utility model, so just after the error component being superimposed with waste gas pretreatment unit, can carry out calibration again to PID, thus makes calibration more objective, makes the calibration of PID more accurate.
Centralized control unit receives the data message exported by data processing unit by communication unit, and the data message received is gathered, analyzed and overload alarm, and the VOC concentration wherein detected and total emission volumn can be converted into concentration and the total amount of the characteristic contamination of measured point discharge, to realize the concentration of characteristic contamination in institute of blowdown enterprise discharging waste gas and the Real-Time Monitoring of total emission volumn.
Embodiment
As shown in Figure 2, a kind of specific implementation of the present utility model is as follows:
Gaseous contaminant sampling unit, as waste gas sampling unit, is arranged on the exhaust opening of blowdown enterprise, carries out the sampling of flue gas.Flue gas pretreatment unit, as waste gas pretreatment unit, filters and dehumidification by condensation process the fume sample that gaseous contaminant sampling unit gathers.Flue gas flow controller is arranged on the output terminal of flue gas pretreatment unit, carries out flow control, fume sample is transported to the input end of the VOC detector as VOC detecting unit afterwards again to the fume sample gathered.The output terminal of VOC detector is connected on the data input pin as the Data Acquisition and Conversion System (DACS) of data processing unit.
Exhaust gas parameters measuring unit in the present embodiment comprises four work branch: the first via is the work branch that exhaust gas temperature transmitter and exhaust gas temperature analyzer form, second tunnel is the work branch that exhaust gas pressure transmitter and exhaust gas pressure analyzer form, 3rd tunnel is the work branch that exhaust gas flow transmitter and exhaust gas flow measuring instrument form, and the 4th tunnel is the work branch that waste gas humidity transmitter and waste gas humidity analyzer form; The detection data output end of four work branch is all connected on the data message input end of Data Acquisition and Conversion System (DACS).The data message output terminal connecting communication unit of Data Acquisition and Conversion System (DACS), the two path control signal output terminal of Data Acquisition and Conversion System (DACS) is switched on two control ends of blowback unit.The output of the two-way high-pressure gas circuit of blowback unit, a road connects gaseous contaminant sampling unit, carries out regular blowback cleaning to the sampling gas circuit in gaseous contaminant sampling unit; Another road connects exhaust gas pressure transmitter, carries out regular blowback cleaning through exhaust gas pressure transmitter to exhaust gas pressure analyzer.
The data signal output of Data Acquisition and Conversion System (DACS) connects the telecommunication system as communication unit, and the data message wireless (or wired) after process is uploaded to the pollution source monitoring system as centralized control unit by telecommunication system.Pollution source monitoring system at blowdown enterprise exhaust opening Site Detection and the detection data message passed back gather, analyze, using the VOC concentration that detects and total emission volumn as the concentration of the characteristic contamination of discharge and total amount, to blowdown enterprise discharge the concentration of the characteristic contamination in flue gas and total emission volumn carries out Real-Time Monitoring, and can the data message of monitoring be shown and be printed, also can send audible alarm when Monitoring Data transfinites.Environment hosts department adopts instrument by number and connects telecommunication system, to Monitoring Data information, analyzes and gathers.
The partial structurtes of the present embodiment field layout as shown in Figure 3, sampling probe 2 is installed to (measured point) on the chimney 1 of contaminating enterprises, one termination sampling probe 2 of heat-mixing pipe 3, the input end of another termination VOC detecting unit 9, heat-mixing pipe 3 is connected to the first switch valve 5; Second blowback unit be connected to communicating pipe on heat-mixing pipe 3, the communicating pipe of the second blowback unit is connected to second switch valve 4, second switch valve 4 is normally closed solenoid valve, its control end connection data data acquisition and controlling system, the unlatching of second switch valve 4 is controlled by Data Acquisition and Conversion System (DACS), namely gases at high pressure in high-pressure air source carry out high pressure blowback, with periodic cleaning heat-mixing pipe 3 by communicating pipe to heat-mixing pipe 3.The connecting line of the output terminal of VOC detecting unit 9 is connected to the 3rd switch valve 6,3rd switch valve 6 is normally open solenoid valve, connecting line is connected to flue gas sampling pump, for follow-up waste gas pretreatment unit and exhaust gas parameters measuring unit (not shown) provide gathered flue gas.The flue gas gathered send exhaust gas parameters measuring unit after the condensation, filtration treatment of waste gas pretreatment unit, carries out the detection of temperature, pressure, flow and humidity, and detection data are outputted to Data Acquisition and Conversion System (DACS).Finally, the flue gas of collection is discharged to outdoor through evacuated tube.
Gas inlet pipe for connecting alignment unit is also connected to and gas goes out pipe at VOC detecting unit 9, gas inlet pipe is connected to the 4th switch valve 8, goes out on pipe to be connected to the 5th switch valve 7 at gas, 4th switch valve 8 and the 5th switch valve 7 are normally closed solenoid valve, alignment unit provides calibrating gas, VOC detecting unit 9 carries out regular calibration accordingly, to reduce metrical error.
Principle of work of the present utility model is, after waste gas gathers through waste gas sampling unit and filters, through the transmission of the Heat preservation of heat-mixing pipe, enter waste gas pretreatment unit, carry out after condensation dewaters at waste gas pretreatment unit, enter VOC detecting unit, the VOC data detected are sent to Data Acquisition and Conversion System (DACS) by VOC detecting unit, after the data processing of Data Acquisition and Conversion System (DACS), then show to pollution source monitoring system through wireless communication networks or internet transmission; Meanwhile, exhaust gas parameters measuring unit measures the parameters such as the temperature of waste gas, pressure, humidity and flow velocity in real time, detects data after Data Acquisition and Conversion System (DACS) process, teletransmission to pollution source monitoring system, to calculate the discharge amount of exhaust gas of measured point.Two blowback unit regularly clean sample lines automatically, and alignment unit carries out periodic calibration to surveying instrument, to ensure the accuracy of measurement data.
The key technical indexes of real-time monitoring system of the present invention is as follows:
。
Claims (5)
1. pollution source VOC concentration and a total emission volumn real-time monitoring system, is characterized in that, include:
Waste gas sampling unit, connects with waste gas pretreatment unit and blowback unit respectively, samples for the waste gas discharged measured point, filter and heats;
Waste gas pretreatment unit, connects with described waste gas sampling unit, VOC detecting unit and alignment unit respectively, for carrying out dehumidification by condensation process to the waste gas sample gathered;
VOC detecting unit, connects with described waste gas pretreatment unit and data processing unit respectively, for detecting the VOC concentration in waste gas sample after treatment, and detection data is outputted to data processing unit;
Exhaust gas parameters measuring unit, connects with data processing unit and blowback unit respectively, and the waste gas for discharging measured point carries out the detection of temperature, pressure, flow and humidity, and detection data are outputted to data processing unit;
Data processing unit, connect with described VOC detecting unit, described exhaust gas parameters measuring unit, blowback unit and communication unit respectively, for regularly starting the action of blowback unit, and data processing being carried out to the detection data of input, then data message being sent to centralized control unit;
Blowback unit, connect with described data processing unit, described waste gas sampling unit and described exhaust gas parameters measuring unit respectively, point two-way carries out regular blowback cleaning respectively to the surveying instrument in the sampling gas circuit in described waste gas sampling unit and described exhaust gas parameters measuring unit;
Communication unit, connects with described data processing unit, and is connected with centralized control unit by wired or wireless mode, and the data message for being exported by described data processing unit is long-range is sent to centralized control unit; And
Centralized control unit, is connected with described communication unit by wired or wireless mode, for receiving the data message exported by data processing unit, to realize the concentration of VOC in measured point institute discharging waste gas and the real-time monitoring of total emission volumn.
2. pollution source VOC concentration according to claim 1 and total emission volumn real-time monitoring system, is characterized in that, also include:
Alignment unit, connects with described waste gas pretreatment unit, for carrying out regular calibration by described waste gas pretreatment unit to the surveying instrument in described VOC detecting unit.
3. pollution source VOC concentration according to claim 1 and 2 and total emission volumn real-time monitoring system, it is characterized in that, heating arrangement, filtration unit and cooling and dehumidifying device is provided with in described waste gas sampling unit, described heating arrangement heats the waste gas sample gathered, and described cooling and dehumidifying device carries out cooling and dehumidifying process to the waste gas sample after heating.
4. pollution source VOC concentration according to claim 1 and 2 and total emission volumn real-time monitoring system, it is characterized in that, described VOC detecting unit uses photoionization detector to monitor the VOC in gathered waste gas, detects and comprise aromatics, ketone, aldehydes, ammonia and amine, halogenated hydrocarbon, sulfo-hydro carbons, unsaturated hydro carbons and alcohols.
5. pollution source VOC concentration according to claim 1 and 2 and total emission volumn real-time monitoring system, it is characterized in that, described centralized control unit gathers received data message, analyze and overload alarm, and the concentration of VOC wherein and total emission volumn can be converted into the concentration of the characteristic contamination of measured point discharge and total amount is recorded and shows.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898719A (en) * | 2015-06-19 | 2015-09-09 | 王晓利 | Pollution VOC concentration and total discharge amount real-time monitoring system |
| CN108226384A (en) * | 2016-12-14 | 2018-06-29 | 盟立自动化股份有限公司 | Detection apparatus and organic compound detector |
| CN114926963A (en) * | 2022-05-17 | 2022-08-19 | 西安赢润环保科技集团有限公司 | Point type carbon monoxide detection device and detection method |
-
2015
- 2015-06-19 CN CN201520426720.4U patent/CN204679877U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898719A (en) * | 2015-06-19 | 2015-09-09 | 王晓利 | Pollution VOC concentration and total discharge amount real-time monitoring system |
| CN104898719B (en) * | 2015-06-19 | 2017-11-14 | 邓静秋 | Pollution sources VOC concentration and total emission volumn real-time monitoring system |
| CN108226384A (en) * | 2016-12-14 | 2018-06-29 | 盟立自动化股份有限公司 | Detection apparatus and organic compound detector |
| CN114926963A (en) * | 2022-05-17 | 2022-08-19 | 西安赢润环保科技集团有限公司 | Point type carbon monoxide detection device and detection method |
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Effective date of registration: 20160928 Address after: 050031 Hebei environmental emergency and heavy pollution weather early warning center, No. 30 Ya Qing Street, Yuhua, Hebei, Shijiazhuang Patentee after: Deng Jingqiu Address before: 050031 Hebei environmental emergency and heavy pollution weather early warning center, No. 30 Ya Qing Street, Yuhua, Hebei, Shijiazhuang Patentee before: Wang Xiaoli Patentee before: Deng Jingqiu |
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Effective date of registration: 20170613 Address after: 100000 Beijing city Haidian District Road No. 22 Hing Building E block 9 layer F Patentee after: BEIJING EVERISE TECHNOLOGY LTD. Address before: 050031 Hebei environmental emergency and heavy pollution weather early warning center, No. 30 Ya Qing Street, Yuhua, Hebei, Shijiazhuang Patentee before: Deng Jingqiu |