CN210603408U - Coal fired power plant carbon emission continuous monitoring analysis system - Google Patents
Coal fired power plant carbon emission continuous monitoring analysis system Download PDFInfo
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- CN210603408U CN210603408U CN201921729286.1U CN201921729286U CN210603408U CN 210603408 U CN210603408 U CN 210603408U CN 201921729286 U CN201921729286 U CN 201921729286U CN 210603408 U CN210603408 U CN 210603408U
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Abstract
The utility model discloses a coal fired power plant carbon emission continuous monitoring and analyzing system, which comprises a sampling unit for collecting flue gas in a flue, a pretreatment unit for mixing and pretreating the flue gas collected by the sampling unit, a data analysis and processing unit for measuring gas concentration of the pretreated flue gas, and a back flushing unit for periodically purging the sampling unit; the sampling unit is electrically connected with the data analysis and processing unit through the air pump and the preprocessing unit; the sampling unit extends into the flue; the back blowing unit extends into the flue and is connected with the sampling unit; utility model's coal fired power plant carbon emission continuous monitoring analytic system detects the precision height, and equipment long service life.
Description
Technical Field
The utility model relates to a carbon emission continuous monitoring analytic system, concretely relates to coal fired power plant carbon emission continuous monitoring analytic system belongs to carbon emission monitoring analytic system technical field.
Background
China is the biggest greenhouse gas emission country in the world, and the emission amount accounts for 1/4 of the total emission amount of the world; the emission of greenhouse gases (mainly carbon dioxide) can produce great negative effects, mainly including glacier ablation, sea level rise, grain yield reduction, species extinction and the like. Coal power is an energy consumption, gas pollutant emission and carbon dioxide emission user, and carbon dioxide emission depends on an accurate carbon emission monitoring system, but the existing carbon emission monitoring system can only monitor a single point and cannot obtain an accurate measurement value. Therefore, in order to solve the above problems, it is necessary to design a continuous monitoring and analyzing system for carbon emission of a coal-fired power plant.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a coal fired power plant carbon emission continuous monitoring analytic system detects the precision height, and equipment long service life.
The utility model discloses a coal fired power plant carbon emission continuous monitoring and analysis system, including the sampling unit that is used for gathering flue gas in the flue, and be used for mixing the flue gas that the sampling unit gathered and carry out the preprocessing unit of preliminary treatment, and be used for carrying out the data analysis processing unit of gas concentration measurement to the flue gas after the preliminary treatment, and be used for regularly sweeping the blowback unit of sampling unit; the sampling unit is electrically connected with the data analysis and processing unit through the air pump and the preprocessing unit; the sampling unit extends into the flue; the back-blowing unit extends into the flue and is connected with the sampling unit, a plurality of sampling probes of the sampling unit respectively collect flue gas at a plurality of points in the flue, and the flue gas is conveyed to the pretreatment unit through the sampling probe and the sampling pipeline by the air pump for pretreatment; the sampling flue gas conveyed by the sampling pipeline is firstly collected and mixed in a mixing header pipe of the pretreatment unit, and then the sampling flue gas is subjected to dehumidification, dust removal and cooling treatment sequentially through a dehumidification mechanism, a dust removal mechanism and a cooling mechanism of the pretreatment unit so as to meet the sampling detection requirement; then, respectively conveying the pretreated flue gas to flue gas transmission branch pipes connected with different sensor monitoring modules through flue gas transmission pipelines by using an air extraction pump; then, the sensor monitoring modules connected with the smoke transmission branch pipes are used for carrying out parameter detection on the sampled smoke in the smoke transmission branch pipes, the detection values are transmitted to a main controller of the data analysis and processing unit, the main controller is used for analyzing and processing the collected detection signals, the detection signals are converted into digital signals, and finally, the numerical value is displayed through a display screen of the main controller;
the sampling unit comprises at least 2 sampling probes and a sampling probe tube connected with the sampling probes; the sampling probe tube and the connection end of the sampling probe extend into the flue, and the other end of the sampling probe tube penetrates through the flue and is fixedly connected with the outer wall of the flue through a fixed seat; one end of the sampling probe tube, which is far away from the sampling probe, is connected with the preprocessing unit through a sampling pipeline, at least 2 sampling probes are installed in the flue, and at least 2 sampling points are distributed on the same section of the flue in order to effectively improve the measurement accuracy of the volume concentration of the carbon dioxide on the section;
the pretreatment unit comprises a mixing main pipe, and a dehumidification mechanism, a dust removal mechanism and a cooling mechanism which are sequentially connected with the mixing main pipe; the temperature reduction mechanism is connected with the data analysis and processing unit through a gas transmission pipeline by a gas extraction pump, and the sampled gas conveyed by the sampling pipeline is collected and mixed in a mixing header pipe of the pretreatment unit and is used for averaging the gas content of different measuring points on the same section in the flue; drying the mixed flue gas by a dehumidification mechanism, removing dust impurities of the dried mixed flue gas by a dust removal mechanism, and cooling the mixed flue gas after dust removal by a cooling mechanism to meet the flue gas measurement requirement; then, the sampled mixed flue gas is transmitted to a plurality of flue gas transmission branch pipes connected with the data analysis processing unit through flue gas transmission pipelines under the suction action of an air suction pump; the dehumidification mechanism is an existing dehumidifier for absorbing moisture in smoke and can be a circulating dehumidifier, desiccant in the dehumidification mechanism can flow in a plurality of conical leaks which are communicated with the upper section and the lower section of the circulating dehumidifier, the moisture in the smoke is absorbed at the upper section of the circulating dehumidifier, wet desiccant is dried by high-temperature smoke to obtain dry desiccant, and the dry desiccant is sent to the upper section of the circulating dehumidifier by a bucket; the dust removal mechanism is the existing dust removal equipment capable of separating dust from flue gas; the cooling mechanism is the existing flue gas cooling equipment capable of cooling the high-temperature flue gas to a set temperature range, and particularly can be a heat exchanger with a heat exchange jacket; therefore, the specific structures and the working principles of the dehumidification mechanism, the dust removal mechanism and the cooling mechanism are not detailed herein, and corresponding equipment can be selected according to actual operation requirements;
the data analysis and processing unit comprises a main controller with a display screen, and a data storage module, a data proofreading module, an air pump control module, a photoelectric alarm module and a plurality of sensor monitoring modules which are electrically connected with the main controller; the air pump control module is electrically connected with the air pump; the air outlet end of the air pump is connected with the sensor monitoring module through the flue gas transmission branch pipe, and the main controller drives the air pump to work through the air pump control module so as to realize the extraction of sampled flue gas; the sensor monitoring module is used for carrying out parameter detection on the sampled smoke in the smoke transmission branch pipe, the detection signal result is transmitted to the main controller for analysis and processing, the main controller is used for analyzing and processing the acquired detection signal, the detection signal is converted into a digital signal and stored in the data storage module, the digital signal is compared with a preset value set in the data correction module, and if the preset value is exceeded, the main controller is used for controlling the photoelectric alarm module to give an alarm; meanwhile, the display screen of the main controller can be used for displaying the numerical value of the detection value;
the back flushing unit comprises a compressed air storage tank and a back flushing pipe connected with the compressed air storage tank; it and the three-way valve that deviates from compressed air storage jar one end of blowback pipe are respectively with sampling probe and sampling pipeline UNICOM, and clear compressed air blows off by the blowback head after carrying to the blowback head through the blowback pipe, sweeps the dust that adheres to the filter screen surface to the flue in, avoids blockking up filter screen and sampling probe because of the dust is excessive to pile up, influences the flue gas sampling of sampling probe.
Further, the plurality of sensor monitoring modules comprise a carbon dioxide monitoring module, a flow monitoring module, a temperature monitoring module and a humidity monitoring module which are electrically connected with the main controller; the air outlet end of the air pump is respectively connected with the carbon dioxide monitoring module and the flow monitoring module through the flue gas transmission branch pipe; the temperature monitoring module and the humidity monitoring module are respectively in communication connection with the cooling mechanism and the dehumidifying mechanism of the preprocessing unit through the main controller, and carbon dioxide concentration and flow monitoring can be performed on the flue gas by utilizing the carbon dioxide sensors and the flowmeters of the carbon dioxide monitoring module and the flow monitoring module respectively; the temperature and the humidity of the cooling mechanism and the dehumidifying mechanism are respectively monitored by the temperature monitoring module and the humidity monitoring module, the monitored temperature and humidity are transmitted to the main controller for analysis and processing, and if the temperature/humidity exceeds a preset value, the main controller controls corresponding temperature/humidity adjusting components in the cooling mechanism/dehumidifying mechanism, so that the temperature and the humidity of the flue gas meet the measurement requirements; the system comprises a carbon dioxide monitoring module, a flow monitoring module, a temperature monitoring module and a humidity monitoring module, wherein the carbon dioxide monitoring module, the flow monitoring module, the temperature monitoring module and the humidity monitoring module are all existing modules; the temperature regulating component and the humidity regulating component in the temperature reducing mechanism and the dehumidifying mechanism are matched according to the used temperature reducing equipment and dehumidifying equipment, and the specific circuit structure and the working principle thereof are not detailed herein.
Further, the main controller is composed of a PLC controller and a minimum control unit thereof.
As the preferred embodiment, the periphery of the sampling probe is fixed with the filter screen with the aperture of 3-6um, so that large-particle dust in the flue gas can be preliminarily filtered, and the influence on flue gas collection caused by the blockage of the probe due to the adhesion of the large-particle dust on the surface of the sampling probe is avoided.
In a preferred embodiment, the sampling probe is an electric heat tracing type sampling probe; the sampling probe, the sampling pipeline and the mixing main pipe are all electric heat tracing type pipelines, and the sampling probe, the sampling pipeline and the mixing main pipe in a sampling electric heat tracing mode stabilize the temperature of the sampled flue gas to be 160 ℃ plus one year, so that the water vapor in the flue gas is prevented from being condensed when being cooled and corroding the sampling probe, the sampling pipeline and the mixing main pipe; and can effectively avoid the measuring result from the carbon dioxide in the condensed water dissolving flue gas generated by the condensation of the water vapor.
As a preferred embodiment, each sampling pipeline is fixed with an electromagnetic switch valve; the electromagnetic switch valve is electrically connected with the main controller through the electromagnetic valve control module, and the flue gas sampled by the sampling probe connected with a single sampling pipeline can be independently detected by starting and stopping the electromagnetic switch valve, so that the carbon emission of a single measuring point can be monitored and analyzed; the electromagnetic valve control module adopts the existing electromagnetic valve driving module capable of realizing independent driving of a plurality of electromagnetic switch valves, and the specific circuit structure and the circuit principle thereof are not detailed herein.
As a preferred embodiment, the outer side of the sampling probe pipe is sleeved with an anti-corrosion protection pipe sleeve, the anti-corrosion protection pipe sleeve can wrap the periphery of the sampling probe pipe and play a role in protecting the sampling probe pipe, corrosion of corrosive substances containing sulfur, nitrogen and the like in a flue to the sampling probe pipe is reduced, and the service life of the sampling probe pipe is prolonged.
In a preferred embodiment, the output end of the flue gas transmission branch pipe is connected to the absorption tower, and the absorption tower is used for absorbing the carbon dioxide discharged from the flue gas transmission branch pipe, so that the detection emission of the carbon dioxide is reduced.
Compared with the prior art, the utility model discloses a coal fired power plant carbon emission continuous monitoring analytic system, 2 at least sampling points of distribution on the same cross-section of flue to improve the measuring accuracy of carbon dioxide volume concentration on the cross-section; the sampled flue gas is subjected to pretreatment such as mixing, dehumidification, dust removal, cooling and the like in sequence, and then is analyzed and detected, and the flue gas at different sampling points is mixed, so that the flue gas content of different measuring points with the same section in a flue is averaged, the influence on the monitoring of carbon emission caused by impurities such as water vapor and dust carried in the flue gas can be avoided, and the detection accuracy is improved; set up the blowback unit, clear compressed air blows off by the blowback head after carrying to the blowback head through the blowback pipe, sweeps the dust that adheres in the filter screen surface to the flue in, avoids blockking up filter screen and sampling probe because of the dust is excessive to pile up, influences the flue gas sampling of sampling probe, still can prolong sampling probe's life.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic view of a sampling unit mounting structure according to embodiment 1 of the present invention.
Fig. 3 is a schematic view of the overall structure of embodiment 2 of the present invention.
The parts in the drawings are marked as follows: 1-flue, 2-sampling unit, 21-sampling probe, 22-sampling probe, 23-sampling pipeline, 3-pretreatment unit, 31-mixing header pipe, 32-dehumidification mechanism, 33-dedusting mechanism, 34-cooling mechanism, 4-data analysis processing unit, 41-main controller, 42-data storage module, 43-data correction module, 44-air pump control module, 45-acousto-optic alarm module, 46-display screen, 47-carbon dioxide monitoring module, 48-flow monitoring module, 49-temperature monitoring module, 40-humidity monitoring module, 410-electromagnetic valve control module, 5-back-blowing unit, 51-compressed air storage tank, 52-back-blowing pipe, 6-air pump, 7-a fixed seat, 8-a flue gas transmission pipeline, 9-a flue gas transmission branch pipe, 10-a three-way valve, 11-a filter screen, 12-an anti-corrosion protection pipe sleeve and 13-an electromagnetic switch valve.
Detailed Description
Example 1:
the coal-fired power plant carbon emission continuous monitoring and analyzing system shown in fig. 1 and fig. 2 comprises a sampling unit 2 for collecting flue gas in a flue 1, a pretreatment unit 3 for mixing and pretreating the flue gas collected by the sampling unit 2, a data analysis and processing unit 4 for measuring gas concentration of the pretreated flue gas, and a back-blowing unit 5 for periodically blowing the sampling unit; the sampling unit 2 is electrically connected with the data analysis and processing unit 4 through the air pump 6 and the preprocessing unit 3; the sampling unit 2 extends into the flue 1; the back blowing unit 5 extends into the flue 1 and is connected with the sampling unit 2;
the sampling unit comprises 2 sampling probes 21 and a sampling probe 22 connected with the sampling probes 21; the connection end of the sampling probe 22 and the sampling probe 21 extends into the flue 1, and the other end of the sampling probe passes through the flue 1 and is fixedly connected with the outer wall of the flue 1 through a fixed seat 7; one end of the sampling probe 22, which is far away from the sampling probe 21, is connected with the preprocessing unit 3 through a sampling pipeline 23;
the pretreatment unit 3 comprises a mixing main pipe 31, and a dehumidification mechanism 32, a dust removal mechanism 33 and a cooling mechanism 34 which are sequentially connected with the mixing main pipe 31; the cooling mechanism 34 is connected with the data analysis and processing unit 4 through the gas transmission pipeline 8 by the air pump 6;
the data analysis processing unit 4 comprises a main controller 41 with a display screen 46, a data storage module 42, a data proofreading module 43, an air pump control module 44, a photoelectric alarm module 45 and a plurality of sensor monitoring modules, wherein the data storage module 42, the data proofreading module 43, the air pump control module 44, the photoelectric alarm module 45 and the plurality of sensor monitoring modules are electrically connected with the main controller 41; the air pump control module 44 is electrically connected with the air pump 6; the air outlet end of the air pump 6 is connected with the sensor monitoring module through a flue gas transmission branch pipe 9;
the blowback unit 5 comprises a compressed air storage tank 51 and a blowback pipe 52 connected with the compressed air storage tank 51; the blowback pipe 52 and the end thereof away from the compressed air storage tank 51 are respectively communicated with the sampling probe 22 and the sampling pipeline 23 through the three-way valve 10.
The plurality of sensor monitoring modules comprise a carbon dioxide monitoring module 47, a flow monitoring module 48, a temperature monitoring module 49 and a humidity monitoring module 40 which are electrically connected with the main controller 41; the air outlet end of the air pump 6 is respectively connected with a carbon dioxide monitoring module 47 and a flow monitoring module 48 through a flue gas transmission branch pipe 9; the temperature monitoring module 49 and the humidity monitoring module 40 are respectively in communication connection with the cooling mechanism 34 and the dehumidifying mechanism 32 of the preprocessing unit 3 through the main controller 41.
The main controller 41 is composed of a PLC controller and its minimum control unit.
And a filter screen 11 with the aperture of 3-6um is fixed on the periphery of the sampling probe 21.
The sampling probe 21 is an electric heat tracing type sampling probe; the sampling probe 22, the sampling pipeline 23 and the mixing main pipe 31 are all electric heat tracing type pipelines.
The sampling probe tube 22 is sleeved with an anti-corrosion protective tube sleeve 12.
The output end of the flue gas transmission branch pipe 9 is connected to the absorption tower.
Example 2:
the continuous monitoring and analyzing system for carbon emission of coal-fired power plant as shown in fig. 3 has a structure substantially the same as that of embodiment 1, wherein each sampling line 23 is fixed with an electromagnetic switch valve 13; the electromagnetic switch valve 13 is electrically connected with the main controller 41 through the electromagnetic valve control module 410.
The utility model discloses a coal fired power plant carbon emission continuous monitoring and analysis system, a plurality of sampling probes of sampling unit gather the flue gas of a plurality of points in the flue respectively, and carry to the preprocessing unit through sampling probe tube and sampling pipeline through the aspiration pump and carry out the preliminary treatment; the sampling flue gas conveyed by the sampling pipeline is firstly collected and mixed in a mixing header pipe of the pretreatment unit, and then the sampling flue gas is subjected to dehumidification, dust removal and cooling treatment sequentially through a dehumidification mechanism, a dust removal mechanism and a cooling mechanism of the pretreatment unit so as to meet the sampling detection requirement; then, respectively conveying the pretreated flue gas to flue gas transmission branch pipes connected with different sensor monitoring modules through flue gas transmission pipelines by using an air extraction pump; and then, the sensor monitoring modules connected to the smoke transmission branch pipes perform parameter detection on the sampled smoke in the smoke transmission branch pipes, detection values are transmitted to a main controller of the data analysis and processing unit, the main controller analyzes and processes the acquired detection signals, the detection signals are converted into digital signals, and finally, the numerical value is displayed through a display screen of the main controller.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (8)
1. The utility model provides a coal fired power plant carbon emission continuous monitoring analytic system which characterized in that: the device comprises a sampling unit for collecting flue gas in a flue, a pretreatment unit for mixing and pretreating the flue gas collected by the sampling unit, a data analysis and processing unit for measuring the gas concentration of the pretreated flue gas, and a back flushing unit for periodically purging the sampling unit; the sampling unit is electrically connected with the data analysis and processing unit through the air pump and the preprocessing unit; the sampling unit extends into the flue; the back blowing unit extends into the flue and is connected with the sampling unit;
the sampling unit comprises at least 2 sampling probes and a sampling probe tube connected with the sampling probes; the sampling probe tube and the connection end of the sampling probe extend into the flue, and the other end of the sampling probe tube penetrates through the flue and is fixedly connected with the outer wall of the flue through a fixed seat; one end of the sampling probe tube, which is far away from the sampling probe, is connected with the preprocessing unit through a sampling pipeline;
the pretreatment unit comprises a mixing main pipe, and a dehumidification mechanism, a dust removal mechanism and a cooling mechanism which are sequentially connected with the mixing main pipe; the cooling mechanism is connected with the data analysis processing unit through a smoke transmission pipeline by an air pump;
the data analysis and processing unit comprises a main controller with a display screen, and a data storage module, a data proofreading module, an air pump control module, a photoelectric alarm module and a plurality of sensor monitoring modules which are electrically connected with the main controller; the air pump control module is electrically connected with the air pump; the air outlet end of the air pump is connected with the sensor monitoring module through a flue gas transmission branch pipe;
the back flushing unit comprises a compressed air storage tank and a back flushing pipe connected with the compressed air storage tank; and the blowback pipe and one end deviating from the compressed air storage tank are respectively communicated with the sampling probe pipe and the sampling pipeline through a three-way valve.
2. The coal fired power plant carbon emission continuous monitoring and analysis system of claim 1, characterized in that: the plurality of sensor monitoring modules comprise a carbon dioxide monitoring module, a flow monitoring module, a temperature monitoring module and a humidity monitoring module which are electrically connected with the main controller; the air outlet end of the air pump is respectively connected with the carbon dioxide monitoring module and the flow monitoring module through the flue gas transmission branch pipe; the temperature monitoring module and the humidity monitoring module are respectively in communication connection with the cooling mechanism and the dehumidifying mechanism of the preprocessing unit through the main controller.
3. The coal fired power plant carbon emission continuous monitoring and analysis system of claim 1, characterized in that: the main controller consists of a PLC controller and a minimum control unit thereof.
4. The coal fired power plant carbon emission continuous monitoring and analysis system of claim 1, characterized in that: and a filter screen with the aperture of 3-6um is fixed on the periphery of the sampling probe.
5. The coal fired power plant carbon emission continuous monitoring and analysis system of claim 1, characterized in that: the sampling probe is an electric heat tracing type sampling probe; the sampling probe tube, the sampling pipeline and the mixing main pipe are all electric heat tracing type pipelines.
6. The coal fired power plant carbon emission continuous monitoring and analysis system of claim 1, characterized in that: an electromagnetic switch valve is fixed on each sampling pipeline; the electromagnetic switch valve is electrically connected with the main controller through the electromagnetic valve control module.
7. The coal fired power plant carbon emission continuous monitoring and analysis system of claim 1, characterized in that: and an anti-corrosion protection pipe sleeve is sleeved on the outer side of the sampling probe pipe.
8. The coal fired power plant carbon emission continuous monitoring and analysis system of claim 1, characterized in that: and the output end of the flue gas transmission branch pipe is connected to the absorption tower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921729286.1U CN210603408U (en) | 2019-10-16 | 2019-10-16 | Coal fired power plant carbon emission continuous monitoring analysis system |
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| CN201921729286.1U CN210603408U (en) | 2019-10-16 | 2019-10-16 | Coal fired power plant carbon emission continuous monitoring analysis system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267392A (en) * | 2021-06-07 | 2021-08-17 | 中国船舶重工集团公司第七一一研究所 | Ship exhaust emission monitoring system and control method thereof |
| 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 |
-
2019
- 2019-10-16 CN CN201921729286.1U patent/CN210603408U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267392A (en) * | 2021-06-07 | 2021-08-17 | 中国船舶重工集团公司第七一一研究所 | Ship exhaust emission monitoring system and control method thereof |
| 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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Address after: 901, block B, China Railway Construction International City, 2666 Olympic West Road, Lixia District, Jinan City, Shandong Province, 250000 Patentee after: Shandong Yahua Low Carbon Technology Group Co.,Ltd. Address before: 901, block B, China Railway Construction International City, 2666 Olympic West Road, Lixia District, Jinan City, Shandong Province, 250000 Patentee before: SHANDONG YAHUA LOW CARBON TECHNOLOGY Co.,Ltd. |
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Address after: 12 / F, block a, Country Garden Phoenix Center, No.77 Shunyi Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee after: Shandong Yahua Low Carbon Technology Group Co.,Ltd. Address before: Room 901, block B, CRCC international city, 2666 Aoti West Road, Lixia District, Jinan City, Shandong Province Patentee before: Shandong Yahua Low Carbon Technology Group Co.,Ltd. |
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Address after: 12 / F, block a, Country Garden Phoenix Center, No.77 Shunyi Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee after: Shandong Carbon Steward Group Co.,Ltd. Address before: 12 / F, block a, Country Garden Phoenix Center, No.77 Shunyi Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee before: Shandong Yahua Low Carbon Technology Group Co.,Ltd. |