CN111103401A - Continuous monitoring system for smoke emission - Google Patents
Continuous monitoring system for smoke emission Download PDFInfo
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- CN111103401A CN111103401A CN201911303187.1A CN201911303187A CN111103401A CN 111103401 A CN111103401 A CN 111103401A CN 201911303187 A CN201911303187 A CN 201911303187A CN 111103401 A CN111103401 A CN 111103401A
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- storage chamber
- gas storage
- monitoring system
- flue gas
- vacuum pump
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
Abstract
The invention provides a continuous monitoring system for smoke emission, which comprises: the device comprises a sampling tube, a flue gas purification module, a gas storage chamber, a vacuum pump and a measuring device; one end of the sampling tube is used for communicating with a flue gas discharge pipeline, a sampling valve is arranged on the sampling tube, and two ends of the flue gas purification module are respectively connected with the sampling tube and the gas storage chamber; the measuring device is connected with the gas storage chamber and is used for measuring the gas components and the concentration in the gas storage chamber; the vacuum pump is arranged on the gas storage chamber and is used for vacuumizing the gas storage chamber; the gas storage chamber is also provided with an inflation valve for connecting with the external environment. According to the continuous monitoring system for the smoke emission, provided by the invention, the smoke can be continuously sampled and monitored by regularly vacuumizing the gas storage chamber. In addition, when the flue gas monitoring is finished, the gas storage chamber can be filled with air only by closing the sampling valve, vacuumizing the gas storage chamber and opening the inflation valve, so that the gas storage chamber is cleaned and protected.
Description
Technical Field
The invention relates to the technical field of environment and gas detection, in particular to a continuous monitoring system for smoke emission.
Background
In order to effectively monitor the pollutant emission condition of the pollution source, at present, a continuous flue gas emission monitoring system (CEMS) is mostly adopted to measure parameters such as the concentration of harmful gas in a flue, the flow rate of flue gas, the humidity of flue gas and the like, and the measured parameters are sent to an environmental protection monitoring department so as to take corresponding countermeasures according to the measured parameters.
In the existing detection system, when power is suddenly cut off in the working process, residual gas can be left in the gas chamber, and the residual gas is not heated by the electric heating device, so that the temperature is reduced; the water vapor in the residual gas is condensed, and some acid gases in the gas are dissolved in condensed water, such as sulfur dioxide and nitrogen oxides, thereby forming strong corrosive acid to corrode and damage devices such as gas chambers and gas pipelines. There are also substances in the residual gas which are gaseous at high temperatures and solid or liquid at low temperatures, such as sulphur vapours, tars, which evolve at reduced temperatures, contaminating the gas chamber or plugging the gas lines.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a continuous monitoring system for smoke emission.
The invention provides a continuous monitoring system for smoke emission, which comprises: the device comprises a sampling tube, a flue gas purification module, a gas storage chamber, a vacuum pump and a measuring device;
one end of the sampling tube is used for communicating with a flue gas discharge pipeline, a sampling valve is arranged on the sampling tube, and two ends of the flue gas purification module are respectively connected with the sampling tube and the gas storage chamber; the measuring device is connected with the gas storage chamber and is used for measuring the gas components and the concentration in the gas storage chamber;
the vacuum pump is arranged on the gas storage chamber and is used for vacuumizing the gas storage chamber; the gas storage chamber is also provided with an inflation valve for connecting with the external environment.
Preferably, the device also comprises a sample discharge pipe, and two ends of the sample discharge pipe are respectively connected with a vacuum pump and a smoke discharge pipeline; and the flue gas in the flue gas discharge pipeline flows through the sampling pipe and the sample discharge pipe in sequence.
Preferably, the inflation valve is closed in a power-on state and opened in a power-off state.
Preferably, the device also comprises a control module, wherein the control module is used for controlling the vacuum pump to work discontinuously, and the interval time between every two adjacent work of the vacuum pump is a preset threshold value in the control module; the control module is also connected with a sampling valve and is used for controlling the sampling valve to stop when the vacuum pump works.
Preferably, the device further comprises a data processing module, wherein the data processing module is connected with the measuring device and used for acquiring, processing and outputting the measuring data of the measuring device.
Preferably, the data processing module is further connected with a control module, the control module is used for delaying a preset first time to send a data acquisition instruction to the data processing module after the vacuum pump stops working each time, the data processing module is used for acquiring instantaneous data of the measuring device according to the data acquisition instruction and calculating a measurement result by integrating the acquired data for n times, and n is more than or equal to 3 and less than or equal to 10.
Preferably, the data processing module acquires the measurement data acquired last n times as a calculation object every time the data processing module acquires the measurement data; and the data processing module obtains a measurement result by averaging the n calculation objects.
Preferably, the data processing module does not collect n times of measurement data, and obtains the maximum value of each detected component from the n times of measurement data to form a measurement result.
Preferably, the data processing module is further configured to send the measurement result to the monitoring center through a wireless network.
According to the continuous monitoring system for the smoke emission, provided by the invention, the smoke can be continuously sampled and monitored by regularly vacuumizing the gas storage chamber. In addition, when the flue gas monitoring is finished, the gas storage chamber can be filled with air only by closing the sampling valve, vacuumizing the gas storage chamber and opening the inflation valve, so that the gas storage chamber is cleaned and protected.
In the invention, after the vacuum pump works for a period of time, the next work is carried out at a preset threshold interval, namely, the vacuum pump has an interval between two adjacent times of vacuum pumping. So, in the inoperative time of vacuum pump, the flue gas in the flue gas discharge pipeline has sufficient time to flow in gas storage chamber and make and reach atmospheric pressure balanced in the gas storage chamber to guarantee that measuring device has sufficient measuring time, guarantee measured data's accuracy.
Drawings
Fig. 1 is a structural diagram of a continuous monitoring system for smoke emission according to the present invention.
The figure is as follows: the device comprises a sampling pipe 1, a flue gas purification module 2, a gas storage chamber 3, a vacuum pump 4, a measuring device 5, a sampling valve 6, an inflation valve 7, a sample discharge pipe 8 and a flue gas discharge pipeline A.
Detailed Description
Referring to fig. 1, the present invention provides a continuous monitoring system for flue gas emission, which includes: sampling tube 1, flue gas purification module 2, gas storage chamber 3, vacuum pump 4 and measuring device 5.
One end of the sampling tube 1 is used for communicating with a flue gas discharge pipeline A, and a sampling valve 6 is arranged on the sampling tube 1. The two ends of the flue gas purification module 2 are respectively connected with the sampling tube 1 and the gas storage chamber 3. The measuring device 5 is connected to the gas storage chamber 3 for measuring the composition and concentration of the gas in the gas storage chamber 3. In specific implementation, the measuring device 5 may be an ultraviolet lamp or may be composed of a plurality of concentration sensors corresponding to different gas components.
A vacuum pump 4 is installed on the gas storage chamber 3 for evacuating the gas storage chamber 3. The gas storage chamber 3 is also provided with an inflation valve 7 for connection to the external environment. Specifically, the charging valve 7 is cut off in the power-on state and opened in the power-off state, so that the gas storage chamber 3 is communicated with the external environment in the power-off state, and the gas storage chamber 3 is prevented from being corroded by smoke through the air cleaning gas storage chamber 3.
The system in this embodiment, at work, at first close sample valve 6 and inflation valve 7, then open vacuum pump 4 and with 3 evacuation in the gas reservoir, take out the back, close vacuum pump 4 and open sample valve 6 for flue gas reposition of redundant personnel in the flue gas emission pipeline A gets into sampling tube 1, then enters gas reservoir 3 after the purification of gas cleaning module 2 and carries out composition and concentration detection.
In this embodiment, the continuous sampling and monitoring of the flue gas can be realized by regularly vacuumizing the gas storage chamber 3. In addition, in the embodiment, when the flue gas monitoring is completed, the gas storage chamber 3 is vacuumized after the sampling valve 6 is closed, and then the inflation valve 7 is opened, so that the gas storage chamber 3 can be filled with air, and the gas storage chamber 3 is cleaned and protected.
The continuous monitoring system for the smoke discharge in the embodiment further comprises a sample discharge pipe 8, and two ends of the sample discharge pipe 8 are respectively connected with the vacuum pump 4 and the smoke discharge pipeline A. Therefore, the detected gas flows back to the smoke discharge pipeline A through the sample discharge pipe 8, is mixed with the smoke, and is directionally discharged after being purified. Therefore, environmental hazards caused by the non-directional emission of the smoke for detection can be avoided. And the flue gas in the flue gas discharge pipeline A flows through the sampling pipe 1 and the sample discharge pipe 8 in sequence. Therefore, the sampling tube 1 can sample the original smoke, and the accuracy of a detection result is ensured.
The continuous monitoring system for smoke emission in the embodiment further comprises a control module, wherein the control module is used for controlling the vacuum pump 4 to work discontinuously, and the interval time between every two adjacent times of work of the vacuum pump 4 is a preset threshold value in the control module. The control module is also connected with a sampling valve 6 and is used for controlling the sampling valve 6 to be cut off when the vacuum pump 4 works. In the embodiment, the vacuum pump 4 and the sampling valve 6 are controlled by the control module to automatically work, so that the timed sampling and monitoring of the smoke are realized. Meanwhile, in the present embodiment, after the vacuum pump 4 operates for a period of time, the next operation is performed at a preset threshold interval, that is, the vacuum pump 4 performs the preset threshold interval between two adjacent vacuum extractions. Therefore, in the non-working time of the vacuum pump 4, the flue gas in the flue gas discharge pipeline A has enough time to flow into the gas storage chamber 3 and make the gas pressure in the gas storage chamber 3 reach the balance, thereby ensuring that the measuring device 5 has enough measuring time and ensuring the accuracy of measured data.
The continuous monitoring system for flue gas emission in the embodiment further comprises a data processing module, wherein the data processing module is connected with the measuring device 5 and used for acquiring the measuring data of the measuring device 5, processing and outputting the data. Specifically, the data processing module is further connected with a control module, the control module is used for delaying a preset first time to send a data acquisition instruction to the data processing module after the vacuum pump 4 stops working each time, the data processing module is used for acquiring instantaneous data of the measuring device according to the data acquisition instruction and calculating a measurement result by integrating the acquired data for n times, and n is more than or equal to 3 and less than or equal to 10.
In this embodiment, each time the data processing module acquires measurement data, the measurement data acquired last n times is acquired as a calculation target. And the data processing module obtains a measurement result by averaging the n calculation objects. For example, in one embodiment, the concentrations of sulfur monoxide and carbon monoxide are detected, and it is assumed that the concentrations of sulfur monoxide are X1 and X2 … … Xn, and the concentrations of carbon monoxide are Y1 and Y2 … … Yn, respectively, in n times of measurement data. The measurement result is then: the concentration of the sulfur monoxide is X, the concentration of the carbon monoxide is Y,
in specific implementation, it may also be set that, every time the data processing module collects n times of measurement data, the maximum value of each detected component is obtained from the n times of measurement data to form a measurement result.
In this embodiment, after obtaining the measurement result, the data processing module sends the measurement result to the monitoring center through the wireless network.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (9)
1. A continuous monitoring system for flue gas emissions, comprising: the device comprises a sampling tube (1), a flue gas purification module (2), a gas storage chamber (3), a vacuum pump (4) and a measuring device (5);
one end of the sampling tube (1) is communicated with the flue gas discharge pipeline (A), a sampling valve (6) is installed on the sampling tube (1), and two ends of the flue gas purification module (2) are respectively connected with the sampling tube (1) and the gas storage chamber (3); the measuring device (5) is connected with the gas storage chamber (3) and is used for measuring the gas components and the concentration in the gas storage chamber (3);
the vacuum pump (4) is arranged on the gas storage chamber (3) and is used for vacuumizing the gas storage chamber (3); the gas storage chamber (3) is also provided with an inflation valve (7) for connecting with the external environment.
2. The continuous monitoring system of fume emission according to claim 1, characterized in that it further comprises a sample discharge pipe (8), the two ends of the sample discharge pipe (8) are respectively connected with a vacuum pump (4) and a fume discharge pipeline (A); and the smoke in the smoke discharge pipeline (A) flows through the sampling pipe (1) and the sample discharge pipe (8) in sequence.
3. The continuous monitoring system of flue gas emissions according to claim 1, characterized in that the charging valve (7) is closed in the power-on state and open in the power-off state.
4. The fume emission continuous monitoring system according to claim 1, further comprising a control module for controlling the vacuum pump (4) to work intermittently, wherein the interval time between every two adjacent works of the vacuum pump (4) is a preset threshold value in the control module; the control module is also connected with a sampling valve (6) and is used for controlling the sampling valve (6) to be cut off when the vacuum pump (4) works.
5. The continuous monitoring system for flue gas emissions according to claim 4, further comprising a data processing module connected to the measuring device (5) for acquiring, processing and outputting the measurement data of the measuring device (5).
6. The continuous monitoring system for flue gas emission according to claim 5, wherein the data processing module is further connected with the control module, the control module is used for sending a data acquisition command to the data processing module in a time-delayed preset first time after the vacuum pump (4) stops working each time, the data processing module is used for acquiring instantaneous data of the measuring device according to the data acquisition command and calculating a measurement result by integrating n times of acquired data, and n is greater than or equal to 3 and less than or equal to 10.
7. The continuous monitoring system for flue gas emission according to claim 6, wherein the data processing module acquires the latest n times of acquired measurement data as a calculation object every time the measurement data is acquired; and the data processing module obtains a measurement result by averaging the n calculation objects.
8. The continuous fume emission monitoring system according to claim 6, wherein the data processing module does not collect n times of measurement data, and obtains the maximum value composition measurement result of each detected component from the n times of measurement data.
9. The continuous monitoring system of flue gas emissions according to claim 5, wherein the data processing module is further configured to send the measurement results to a monitoring center via a wireless network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911303187.1A CN111103401A (en) | 2019-12-17 | 2019-12-17 | Continuous monitoring system for smoke emission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911303187.1A CN111103401A (en) | 2019-12-17 | 2019-12-17 | Continuous monitoring system for smoke emission |
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| CN111103401A true CN111103401A (en) | 2020-05-05 |
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| CN201911303187.1A Pending CN111103401A (en) | 2019-12-17 | 2019-12-17 | Continuous monitoring system for smoke emission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345527A (en) * | 2020-10-23 | 2021-02-09 | 济宁学院 | Coal pyrolysis waste gas detection equipment and working method |
| CN115791547A (en) * | 2023-02-09 | 2023-03-14 | 合肥金星智控科技股份有限公司 | Powder material particle size online monitoring system and method |
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| CN101387603A (en) * | 2008-10-09 | 2009-03-18 | 聚光科技（杭州）有限公司 | Fume emission continuous monitoring method and system |
| CN104655177A (en) * | 2013-11-21 | 2015-05-27 | 徐世铭 | Continuous emission monitoring system |
| CN204758353U (en) * | 2015-04-15 | 2015-11-11 | 广东科立恩环保科技有限公司 | Portable gas sampling device |
| CN108627202A (en) * | 2018-08-06 | 2018-10-09 | 深圳智达机械技术有限公司 | Industrial smoke intelligent monitoring device |
| CN209055370U (en) * | 2018-11-02 | 2019-07-02 | 杭州环研科技有限公司 | A kind of novel malodor sampling device |
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2019
- 2019-12-17 CN CN201911303187.1A patent/CN111103401A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN101387603A (en) * | 2008-10-09 | 2009-03-18 | 聚光科技（杭州）有限公司 | Fume emission continuous monitoring method and system |
| CN104655177A (en) * | 2013-11-21 | 2015-05-27 | 徐世铭 | Continuous emission monitoring system |
| CN204758353U (en) * | 2015-04-15 | 2015-11-11 | 广东科立恩环保科技有限公司 | Portable gas sampling device |
| CN108627202A (en) * | 2018-08-06 | 2018-10-09 | 深圳智达机械技术有限公司 | Industrial smoke intelligent monitoring device |
| CN209055370U (en) * | 2018-11-02 | 2019-07-02 | 杭州环研科技有限公司 | A kind of novel malodor sampling device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345527A (en) * | 2020-10-23 | 2021-02-09 | 济宁学院 | Coal pyrolysis waste gas detection equipment and working method |
| CN115791547A (en) * | 2023-02-09 | 2023-03-14 | 合肥金星智控科技股份有限公司 | Powder material particle size online monitoring system and method |
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Application publication date: 20200505 |