CN212008447U - Fixed pollution source volatile organic compound on-line monitoring system - Google Patents
Fixed pollution source volatile organic compound on-line monitoring system Download PDFInfo
- Publication number
- CN212008447U CN212008447U CN202020264843.3U CN202020264843U CN212008447U CN 212008447 U CN212008447 U CN 212008447U CN 202020264843 U CN202020264843 U CN 202020264843U CN 212008447 U CN212008447 U CN 212008447U
- Authority
- CN
- China
- Prior art keywords
- temperature
- gas
- pipeline
- sampling
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a fixed pollution sources volatile organic compounds on-line monitoring system, including sampling probe, high temperature heat tracing pipeline, pretreatment systems, flue gas monitoring subsystem, gas chromatograph, gas circuit system, PLC control system, industrial computer, data acquisition instrument and blowback system. The sampling pump is a normal temperature pump and is positioned at the downstream of the gas path of the online gas chromatograph. And the electromagnetic valve in the pretreatment system is positioned on a branch of sample gas evacuation and is linked with the sampling and analyzing states of the gas chromatograph. The data acquisition instrument independently acquires temperature, pressure, flow, humidity and concentration signals of the system. The utility model discloses can effectually monitor the waste gas index of emission source to can ensure the accuracy and the authenticity of data.
Description
Technical Field
The utility model relates to a fixed pollution sources exhaust gas on-line monitoring technical field, concretely relates to fixed pollution sources volatile organic compounds on-line monitoring system.
Background
The industrial categories in China are complex, Volatile Organic Compounds (VOCs) are discharged from multiple industries, the coverage rate of monitoring equipment is insufficient, basic information such as the distribution of discharge sources, the discharge intensity and the treatment condition of the VOCs of industrial enterprises is less mastered by the environmental protection department at present, basic data such as VOCs pollution characteristics of regional and national environments are lacked, the discharge condition is unclear, and the actual pollution condition cannot be completely reflected by the existing data. Meanwhile, related laws and regulations, effective toxic and harmful waste gas pollution prevention and supervision systems are still imperfect.
The on-line monitoring of the fixed pollution source VOCs in China is still in the stage of just starting, and in the developed VOCs monitoring work, the adopted method is more diversified, the monitoring data is relatively scattered, and the target compounds are inconsistent. The VOCs monitoring technology which is put out before is mainly an off-line laboratory monitoring technology, and the pollution characteristics and conditions of VOCs in a monitoring area are difficult to effectively and comprehensively reflect in real time. Therefore, it is necessary to use an online volatile organic compound monitoring system for a fixed pollution source of an industrial enterprise to continuously and accurately monitor the concentration of the exhaust gas emitted by the fixed pollution source in real time.
The online volatile organic compound monitoring system in the prior art mainly has the following defects:
1. in the sampling and pretreatment processes, the moisture in the sample gas is removed in a condensation and dehumidification mode to prevent the loss of gas components. However, the sample gas component usually contains a component which is easily soluble in water, and is easily lost in the condensation treatment process, so that the monitoring result is distorted;
2. the sampling pump adopts a high-temperature diaphragm pump with high price and is positioned at the upstream of the gas chromatograph. The pump diaphragm is directly contacted with the sample gas, so that the sample gas components are easily adsorbed, and the diaphragm is easily corroded. Moreover, as the pump works in a high-temperature environment for a long time, the failure rate of the pump is higher, the service life is greatly reduced, and the later-period operation cost is higher;
3. when the gas chromatograph performs sample injection analysis, the sampling pump stops working, and sample gas is not collected. And when the sample is introduced next time, the sampling pump is started to collect the sample gas again and send the sample gas into the gas chromatograph, and the sample gas which is actually collected in the last later period and enters the chromatograph at first is still collected. Leading to real-time lag of monitoring results and distortion of monitoring data.
4. Data transmitted and communicated between the data acquisition instrument and the environment-friendly platform are acquired and read through the industrial personal computer. There is certain risk, and the industrial computer breaks down and will directly lead to the data transmission between data acquisition appearance and the environmental protection platform to be interrupted, causes the data to be lacked.
SUMMERY OF THE UTILITY MODEL
For solving the problem that prior art exists, the utility model provides an online monitoring system of fixed pollution sources volatile organic compounds. The system adopts a negative pressure sample introduction mode, and a sampling pump is designed on a downstream pipeline of a chromatograph. The sampling pump adopts a normal temperature pump, is not directly contacted with waste gas, avoids component adsorption, and reduces the failure rate and the operation cost. The gas circuit electromagnetic valve is linked with the gas chromatograph, so that the sample gas in the gas circuit can be continuously updated in real time, and the timeliness and the authenticity of monitoring data are ensured. The data acquisition instrument independently acquires data from the temperature-pressure flow integrated equipment, the humidity instrument and the gas chromatograph, and system continuity and stability are guaranteed. The specific scheme is as follows:
the utility model provides a fixed pollution sources volatile organic compounds on-line monitoring system, fixed pollution sources volatile organic compounds on-line monitoring system includes sampling probe, high temperature heat tracing pipeline, pretreatment systems, flue gas monitoring subsystem, gas chromatograph, industrial computer, data acquisition appearance, blowback system and PLC control system:
one end of the high-temperature heat tracing pipeline is connected with the discharge pipeline through a sampling probe and is used for collecting sample gas in the discharge pipeline;
the pretreatment system is connected with the other end of the high-temperature heat tracing pipeline and is used for filtering and controlling the flow and the pressure of the sampling gas,
the flue gas monitoring subsystem is connected with the discharge pipeline, is provided with a temperature and pressure flow integrated monitoring device and a humidity detection device and is used for detecting temperature, pressure, flow velocity and humidity,
the gas chromatograph is connected with the pretreatment system and is used for detecting the concentration of the pretreated sample gas;
the industrial personal computer is connected with the gas chromatograph and the flue gas monitoring subsystem and is used for collecting temperature, pressure, flow, humidity and concentration signals and generating reports of various data according to the collected data;
the data acquisition instrument is connected with the gas chromatograph and the flue gas monitoring subsystem, is used for independently acquiring temperature, pressure, flow, humidity and concentration signals of the system and is in data communication with an external monitoring platform;
the back flushing system is connected with the sampling probe and the smoke monitoring subsystem, and dust accumulated in the sampling probe and the warm-pressure flow integrated monitoring equipment is cleaned by compressed air back flushing;
and the PLC control system is connected with the sampling probe, the high-temperature heat tracing pipeline, the pretreatment system, the flue gas monitoring subsystem, the gas chromatograph, the industrial personal computer, the data acquisition instrument and the back flushing system.
Furthermore, the high-temperature heat tracing pipeline is provided with a polytetrafluoroethylene air pipe, a PT100 temperature measuring element and a constant-power heating belt, the polytetrafluoroethylene air pipe, the PT100 temperature measuring element and the constant-power heating belt are wrapped with glass fiber heat insulation layers, polyvinyl chloride layers are wrapped outside the glass fiber heat insulation layers, the PT100 temperature measuring element is connected with a first temperature controller, and the first temperature controller is in communication connection with the PLC control system.
This system adopts the mode of negative pressure advance kind, replaces the high temperature diaphragm pump that the price is expensive with the normal atmospheric temperature pump, avoids the appearance gas to be adsorbed, reduces components and parts fault rate, reduces system's running cost. The gas circuit electromagnetic valve is linked with the gas chromatograph, so that the sample gas in the gas circuit can be updated in real time, and the timeliness and the authenticity of monitoring data are ensured. The data acquisition instrument independently acquires data, and system continuity and stability are guaranteed.
Furthermore, the sampling probe is provided with a filter, a heating module and a back-blowing electromagnetic valve;
the filter has the dust filtering precision of 5 mu m, the heating module is used for heating the collected sample gas and has the heating temperature of 120-180 ℃, the heating module is provided with a PT100 temperature measuring element, the PT100 temperature measuring element is connected with a second temperature controller, the second temperature controller is in communication connection with the PLC control system, and the back-flushing electromagnetic valve is connected with the back-flushing system.
And the gas path system is connected with the gas chromatograph and used for providing a hydrogen gas source, a zero gas source and a nitrogen gas source for the gas chromatograph.
Further, the pretreatment system comprises a sampling pump, a flowmeter, a pressure gauge, an electromagnetic valve and a heating box;
the pretreatment system is provided with a sampling pipeline and an emptying pipeline, a heating box, a flow meter and a sampling pump are sequentially arranged on the sampling pipeline, a gas chromatograph is arranged on the sampling pipeline between the heating box and the flow meter, an air inlet of the heating box is connected with the high-temperature heat tracing pipeline, an air outlet of the heating box is connected with a sample inlet of the gas chromatograph, a mica heating sheet, a PT100 temperature measuring element, a stainless steel air pipe, a high-temperature filter and a ceramic fiber heat insulation layer are arranged in the heating box, the heating temperature of the mica heating sheet is 120-150 ℃, the filtering precision of the high-temperature filter is 2 mu m and the temperature resistance is more than 200 ℃, the PT100 temperature measuring element is connected with a third temperature controller for detecting the temperature in the heating box, and the third temperature controller is in communication connection with,
and a two-way electromagnetic valve and a pressure gauge are sequentially arranged on the emptying pipeline, one end of the emptying pipeline is connected with the high-temperature heat tracing pipeline, and the other end of the emptying pipeline is connected with a sampling pipeline between the sampling pump and the flowmeter.
Compared with the prior art, the utility model has the advantages of as follows:
1. the utility model discloses a mode of whole high temperature heat tracing such as sampling probe heating, high temperature heat tracing pipeline heating and heating cabinet heating guarantees that sample gas gathers from the chimney and comes, detects the analysis in getting into gas chromatograph, and whole journey does not have the condensation point, and the component is lossless to ensure the accuracy and the authenticity of data.
2. The utility model discloses a mode of negative pressure appearance, with the design of sampling pump on the pipeline of chromatograph downstream. The sampling pump adopts a normal temperature pump, is not directly contacted with waste gas, avoids component adsorption, and reduces the failure rate and the operation cost.
3. The utility model discloses a gas circuit solenoid valve and gas chromatograph's sampling, analysis signal linkage, gas chromatograph are advancing kind detection and analysis time, and sample gas is in the continuous quantitative sampling ring who flows in the chromatograph still, and the timeliness and the authenticity of monitoring data are ensured to the sample gas in the real-time update gas circuit.
4. The utility model discloses a data acquisition instrument and industrial computer are independent separately from temperature and pressure flow integrative equipment, hygrograph and gas chromatograph acquisition signal and data, synchronous acquisition data, but independent separately. When the industrial personal computer breaks down, the data communication between the data acquisition instrument and the environment-friendly platform is not influenced, and the continuity and the stability of the system are guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
FIG. 1 is a schematic view of the whole framework of the online volatile organic compound monitoring system for a fixed pollution source of the present invention;
FIG. 2 is a schematic structural view of the main cabinet of the online volatile organic compound monitoring system for a fixed pollution source of the present invention;
FIG. 3 is a schematic view of the gas circuit flow of the fixed pollution source volatile organic compound on-line monitoring system of the present invention;
fig. 4 is the utility model discloses a fixed pollution sources volatile organic compounds on-line monitoring system data acquisition transmission flow schematic diagram.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description so as to explain the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
As shown in fig. 1-2, the utility model provides an online monitoring system of fixed pollution source volatile organic compounds, the online monitoring system of fixed pollution source volatile organic compounds includes sampling probe 101, high temperature heat tracing pipeline 102, pretreatment systems, flue gas monitoring subsystem 109, gas chromatograph 202, industrial computer 201, data acquisition instrument, blowback system and PLC control system 203. The following further description is made with respect to the above components:
one end of the high-temperature heat tracing pipeline 102 is connected with the discharge pipeline through the sampling probe 101 and is used for collecting sample gas in the discharge pipeline;
the pretreatment system is connected with the other end of the high-temperature heat tracing pipeline 102 and is used for filtering, controlling the flow and pressure of the sampling gas,
the flue gas monitoring subsystem 109 is connected with the discharge pipeline, the flue gas monitoring subsystem 109 is provided with a temperature and pressure flow integrated monitoring device 108 and a humidity detection device 107 for detecting temperature, pressure, flow rate and humidity,
the gas chromatograph 202 is connected with the pretreatment system and is used for detecting the concentration of the pretreated sample gas;
the industrial personal computer 201 is connected with the gas chromatograph 202 and the flue gas monitoring subsystem 109 and is used for collecting temperature, pressure, flow, humidity and concentration signals and generating reports of various data according to the collected data;
the data acquisition instrument is connected with the gas chromatograph 202 and the flue gas monitoring subsystem 109, is used for independently acquiring temperature, pressure, flow, humidity and concentration signals of the system, and is in data communication with an external monitoring platform (such as a client DCS106 and an environment-friendly platform 105);
the back flushing system is connected with the sampling probe 101 and the smoke monitoring subsystem 109, and dust accumulated in the sampling probe 101 and the temperature and pressure flow integrated monitoring equipment 108 is cleaned by compressed air back flushing;
and the PLC control system 203 is connected with the sampling probe 101, the high-temperature heat tracing pipeline 102, the pretreatment system, the flue gas monitoring subsystem 109, the gas chromatograph 202, the industrial personal computer 201, the data acquisition instrument and the back flushing system.
The back-blowing system is composed of a back-blowing air source 104 and a back-blowing pipeline 1040, oil-free and water-free compressed air is used, and the PLC control system 203 is used for regularly back-blowing and cleaning dust accumulated in the sampling probe 101 and the temperature-pressure-flow integrated monitoring equipment 108.
The utility model discloses an optional embodiment, high temperature heat tracing pipeline 102 is equipped with polytetrafluoroethylene trachea, PT100 temperature element and constant power heating tape, and polytetrafluoroethylene pipe, PT100 temperature element and the parcel of constant power heating tape have fine heat preservation of glass, and the outside parcel of the fine heat preservation of glass has the polyvinyl chloride layer, and PT100 temperature element is connected with first temperature controller, and first temperature controller is connected with PLC control system 203 communication.
In an optional embodiment of the present invention, the sampling probe 101 is provided with a filter, a heating module and a back-blowing electromagnetic valve; the filter is 5um to the filter fineness of dust, and the heating module is used for heating the sample gas of gathering and heating temperature 120-.
In an optional embodiment of the present invention, the system further comprises a gas path system 103 connected to the gas chromatograph 202 for providing a hydrogen gas source, a zero gas source and a nitrogen gas source for the gas chromatograph 202.
Fig. 2 is a front view of the on-line monitoring main cabinet 100, which includes an industrial personal computer 201, a gas chromatograph 202, a zero gas generator 204, a hydrogen gas generator 205, and a nitrogen gas source 206 from top to bottom. And a PLC control system 203 is arranged on the left side of the online monitoring main cabinet. The right side of the on-line monitoring main cabinet is provided with a pretreatment system 207. A zero gas generator 204, a hydrogen generator 205, and a nitrogen gas source 206 are coupled to the gas chromatograph 202 for providing hydrogen, zero gas, and nitrogen gas to the gas chromatograph 202. The industrial personal computer 201 is connected with the gas chromatograph 202 and the PLC control system 203, and collects and processes temperature, pressure, flow, humidity signals and concentration signals.
As shown in fig. 3, in an alternative embodiment of the present invention, the pretreatment system includes a sampling pump, a flow meter, a pressure gauge, a solenoid valve, and a heating box. The pretreatment system is provided with a sampling pipeline and an emptying pipeline: be equipped with heater box, flowmeter and sampling pump on the sampling pipeline in proper order, gas chromatograph 202 sets up on the sampling pipeline between heater box and flowmeter. And a two-way electromagnetic valve and a pressure gauge are sequentially arranged on the emptying pipeline, one end of the emptying pipeline is connected with the high-temperature heat tracing pipeline 102, and the other end of the emptying pipeline is connected with a sampling pipeline between the sampling pump and the flowmeter.
Preferably, the sampling pump is a room temperature pump, is located on a downstream pipeline of the gas chromatograph 202, is not in direct contact with the collected sample gas, and is connected with the flow meter and the gas chromatograph 202. When the gas chromatograph 202 performs sample injection analysis, the two-way electromagnetic valve is closed, and the sample gas continuously flows into a quantitative sampling ring in the chromatograph, so that the sample gas in the gas path is updated in real time, and the timeliness and the authenticity of monitoring data are ensured. When the gas chromatograph 202 performs pre-sampling, the two-way solenoid valve is opened, the sampling pump keeps working, and most of the sample gas is exhausted from the branch.
An air inlet of the heating box is connected with the high-temperature heat tracing pipeline 102, an air outlet of the heating box is connected with a sample inlet of the gas chromatograph 202, a mica heating plate, a PT100 temperature measuring element, a stainless steel air pipe, a high-temperature filter and a ceramic fiber heat insulation layer are arranged in the heating box, the heating temperature of the mica heating plate is 120-. The PT100 temperature measuring element is connected with a third temperature controller for detecting the temperature in the heating box, and the third temperature controller is in communication connection with the PLC control system 203.
As shown in fig. 4, an industrial personal computer 201 is connected with a gas chromatograph 202 and a PLC control system 203, and can realize data communication with a client DCS by collecting a 4-20mA signal of temperature, pressure, flow and humidity and a concentration RS232 signal through a PLC. The data acquisition instrument is also connected with the gas chromatograph 202 and the PLC control system 203, independently acquires 4-20mA signals of temperature, pressure, flow and humidity and RS232 signals of concentration through the PLC, and can simultaneously realize data communication with the client DCS106 and the environment-friendly platform 105.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (5)
1. The fixed pollution source volatile organic compound on-line monitoring system is characterized by comprising a sampling probe, a high-temperature heat tracing pipeline, a pretreatment system, a smoke monitoring subsystem, a gas chromatograph, an industrial personal computer, a data acquisition instrument, a back flushing system and a PLC (programmable logic controller) control system, wherein the sampling probe is connected with the high-temperature heat tracing pipeline through a pipeline, and the high-temperature heat tracing pipeline is connected with the pretreatment system through a pipeline:
one end of the high-temperature heat tracing pipeline is connected with the discharge pipeline through a sampling probe and is used for collecting sample gas in the discharge pipeline;
the pretreatment system is connected with the other end of the high-temperature heat tracing pipeline and is used for filtering and controlling the flow and the pressure of the sampling gas,
the flue gas monitoring subsystem is connected with the discharge pipeline, is provided with a temperature and pressure flow integrated monitoring device and a humidity detection device and is used for detecting temperature, pressure, flow velocity and humidity,
the gas chromatograph is connected with the pretreatment system and is used for detecting the concentration of the pretreated sample gas;
the industrial personal computer is connected with the gas chromatograph and the flue gas monitoring subsystem and is used for collecting temperature, pressure, flow, humidity and concentration signals and generating reports of various data according to the collected data;
the data acquisition instrument is connected with the gas chromatograph and the flue gas monitoring subsystem, is used for independently acquiring temperature, pressure, flow, humidity and concentration signals of the system and is in data communication with an external monitoring platform;
the back flushing system is connected with the sampling probe and the smoke monitoring subsystem, and dust accumulated in the sampling probe and the warm-pressure flow integrated monitoring equipment is cleaned by compressed air back flushing;
and the PLC control system is connected with the sampling probe, the high-temperature heat tracing pipeline, the pretreatment system, the flue gas monitoring subsystem, the gas chromatograph, the industrial personal computer, the data acquisition instrument and the back flushing system.
2. The fixed pollution source volatile organic compound on-line monitoring system of claim 1, wherein the high temperature heat tracing pipeline is provided with a polytetrafluoroethylene air pipe, a PT100 temperature measuring element and a constant power heating belt, the polytetrafluoroethylene air pipe, the PT100 temperature measuring element and the constant power heating belt are wrapped with a glass fiber insulation layer, a polyvinyl chloride layer is wrapped outside the glass fiber insulation layer, the PT100 temperature measuring element is connected with a first temperature controller, and the first temperature controller is in communication connection with the PLC control system.
3. The fixed pollution source volatile organic compound on-line monitoring system of claim 1, wherein the sampling probe is provided with a filter, a heating module and a back-flushing solenoid valve;
the filter has the dust filtering precision of 5 mu m, the heating module is used for heating the collected sample gas and has the heating temperature of 120-180 ℃, the heating module is provided with a PT100 temperature measuring element, the PT100 temperature measuring element is connected with a second temperature controller, the second temperature controller is in communication connection with the PLC control system, and the back-flushing electromagnetic valve is connected with the back-flushing system.
4. The system for on-line monitoring of fixed-source volatile organic compounds of claim 1, further comprising a gas circuit system coupled to the gas chromatograph for providing a hydrogen gas source, a zero gas source, and a nitrogen gas source to the gas chromatograph.
5. The fixed pollution source volatile organic compound on-line monitoring system of claim 1, wherein the pretreatment system comprises a sampling pump, a flow meter, a pressure gauge, a solenoid valve and a heating box;
the pretreatment system is provided with a sampling pipeline and an emptying pipeline, a heating box, a flow meter and a sampling pump are sequentially arranged on the sampling pipeline, a gas chromatograph is arranged on the sampling pipeline between the heating box and the flow meter, an air inlet of the heating box is connected with the high-temperature heat tracing pipeline, an air outlet of the heating box is connected with a sample inlet of the gas chromatograph, a mica heating sheet, a PT100 temperature measuring element, a stainless steel air pipe, a high-temperature filter and a ceramic fiber heat insulation layer are arranged in the heating box, the heating temperature of the mica heating sheet is 120-150 ℃, the filtering precision of the high-temperature filter is 2 mu m and the temperature resistance is more than 200 ℃, the PT100 temperature measuring element is connected with a third temperature controller for detecting the temperature in the heating box, and the third temperature controller is in communication connection with,
and a two-way electromagnetic valve and a pressure gauge are sequentially arranged on the emptying pipeline, one end of the emptying pipeline is connected with the high-temperature heat tracing pipeline, and the other end of the emptying pipeline is connected with a sampling pipeline between the sampling pump and the flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020264843.3U CN212008447U (en) | 2020-03-06 | 2020-03-06 | Fixed pollution source volatile organic compound on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020264843.3U CN212008447U (en) | 2020-03-06 | 2020-03-06 | Fixed pollution source volatile organic compound on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212008447U true CN212008447U (en) | 2020-11-24 |
Family
ID=73424464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020264843.3U Active CN212008447U (en) | 2020-03-06 | 2020-03-06 | Fixed pollution source volatile organic compound on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212008447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046939A (en) * | 2021-10-28 | 2022-02-15 | 中国地质大学（武汉） | Liquid ammonia leakage detection system and method for low-temperature refrigeration house |
-
2020
- 2020-03-06 CN CN202020264843.3U patent/CN212008447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046939A (en) * | 2021-10-28 | 2022-02-15 | 中国地质大学（武汉） | Liquid ammonia leakage detection system and method for low-temperature refrigeration house |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111289645A (en) | Fixed pollution source volatile organic compound on-line monitoring system | |
| CN201233390Y (en) | Flue gas on-line continuous monitoring apparatus | |
| CN107132318B (en) | Fixed pollution source VOC on-line monitoring system | |
| CN104297020A (en) | Flue gas pollution collection device and method | |
| CN104898719A (en) | Pollution VOC concentration and total discharge amount real-time monitoring system | |
| CN109459513A (en) | A kind of on-line monitoring system applied to pollution sources volatile organic matter | |
| CN212674847U (en) | Pollution sources volatile organic compounds on-line monitoring device | |
| CN103645127A (en) | Back flushing type real-time online monitoring system for smoke pollutants | |
| CN111366519A (en) | Filter material filtering performance evaluation system under simulated smoke thermal state working condition | |
| CN208860147U (en) | Use the energy-saving control system field instrument of the heating furnace of mixed gas | |
| CN212008447U (en) | Fixed pollution source volatile organic compound on-line monitoring system | |
| CN206848241U (en) | A kind of on-line monitoring system of coal fired thermal power plant mercury emissions thing | |
| CN108801718A (en) | A kind of tail gas on-line monitoring system peculiar to vessel | |
| CN203909009U (en) | Continuous online monitoring system for flue gas | |
| CN108872434A (en) | A kind of volatile organic matter on-line monitoring system | |
| CN112540119A (en) | TVOCs organized online monitoring system and working method thereof | |
| CN2914071Y (en) | Continuous fume emission monitoring system | |
| CN204679877U (en) | Pollution source VOC concentration and total emission volumn real-time monitoring system | |
| CN216792012U (en) | Two-channel multi-component smoke emission online monitoring system | |
| CN204142704U (en) | Smoke pollution harvester | |
| CN215493466U (en) | Exhaust emission monitoring system of coking plant | |
| CN107702952A (en) | A kind of dusty gas continuous sampling device | |
| CN212134237U (en) | Synchronous sampling device of condensable particles and sulfur trioxide in coal-fired flue gas | |
| CN209589905U (en) | SO in a kind of flue gas3On-line measurement system | |
| CN207585975U (en) | A kind of polluted gas continuous sampling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |