CN116818021A - Petrochemical production emission dynamic monitoring equipment and monitoring method - Google Patents
Petrochemical production emission dynamic monitoring equipment and monitoring method Download PDFInfo
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- CN116818021A CN116818021A CN202310863105.9A CN202310863105A CN116818021A CN 116818021 A CN116818021 A CN 116818021A CN 202310863105 A CN202310863105 A CN 202310863105A CN 116818021 A CN116818021 A CN 116818021A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 133
- 239000000779 smoke Substances 0.000 claims abstract description 53
- 239000007789 gas Substances 0.000 claims abstract description 48
- 239000000428 dust Substances 0.000 claims abstract description 13
- 238000012806 monitoring device Methods 0.000 claims abstract description 11
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 239000003517 fume Substances 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 8
- 239000003570 air Substances 0.000 description 48
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000012080 ambient air Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 230000036541 health Effects 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a dynamic monitoring device and a monitoring method for petrochemical production emissions, and relates to the technical field of petrochemical emission monitoring. In the invention, the following components are added: the monitoring assembly is further provided with an ambient temperature module for monitoring ambient temperature and an infrared temperature detection module for upwardly monitoring the temperature of the exhaust smoke region, wherein the monitoring assembly is positioned in a lower region of the downstream boundary of the exhaust smoke region. The negative pressure detection equipment is provided with a vertically through air inlet wide-mouth, a sinking channel, a detection air cavity and a drainage channel from top to bottom, wherein the annular side of the detection air cavity is provided with a plurality of gas detection assemblies, the gas detection assemblies are provided with PH sensors and dust concentration sensors, and the periphery of each gas detection assembly is communicated with a negative pressure driving device. The invention can complete the accurate parameter detection and analysis of the concentration of each component of the waste gas more stably, reliably and conveniently, and avoid the phenomenon that the waste gas cannot be monitored by the monitoring equipment caused by the escape of the discharged smoke in the monitoring area.
Description
Technical Field
The invention relates to the technical field of petrochemical emission monitoring, in particular to petrochemical production emission dynamic monitoring equipment and a monitoring method.
Background
The petrochemical industry is an important industrial sector, but it is also an important source of environmental pollution. The following are some of the pollutant gas emissions that may be produced in the petrochemical industry: carbon dioxide (CO) 2 ) This gas is one of the most common emissions in petroleum processing because it is the product of many petroleum processing processes. Sulfur dioxide (SO) 2 ) A gas which may be generated during combustion in the petrochemical industry and which may lead to acid rainHas harm to the environment and human health. Nitrogen Oxides (NO) X ) In the petrochemical industry, NO X Is a common gas produced by the combustion of fuel and is also one of the main sources of air pollution. Volatile Organic Compounds (VOCs) -chemicals and fuels used in the petrochemical industry may contain volatile organic compounds that can cause air pollution and even affect human health. Suspended Particulate Matter (PM), which may be harmful to human health and the environment, may be contained in exhaust gases and waste water from processes in the petrochemical industry.
In the petrochemical waste gas emission process, the molecular weight and density of main pollution components of waste gas are generally larger than those of normal-temperature air, after the waste gas is discharged from a cooling discharge tower, the temperature of the waste gas is gradually reduced, and the temperature of discharged smoke is gradually reduced due to the influence of external wind, temperature and the like. Therefore, the dynamic detection of the emission of petrochemical related enterprises becomes an important way for effectively supervising the environmental protection production of petrochemical enterprises.
In the existing mode, the mode of monitoring the exhaust gas of petrochemical enterprises generally is to directly set up a gas detection device around the enterprises, but when the exhaust gas is discharged, the influence of various factors such as external temperature, wind direction and wind speed is great, and the gas detection device at a fixed position often cannot monitor the exhaust gas of the petrochemical enterprises more accurately.
Disclosure of Invention
The invention aims to solve the technical problem of providing the dynamic monitoring equipment and the monitoring method for the petrochemical production emissions, so that the accurate parameter detection and analysis of the concentration of each component of the exhaust gas are stably, reliably and conveniently completed, and the phenomenon that the monitoring equipment cannot monitor the exhaust gas due to the fact that the exhaust gas escapes from a monitoring area is avoided.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a dynamic monitoring device for petrochemical production emissions, which comprises a plurality of negative pressure detection devices, wherein the negative pressure detection devices are distributed on the downstream side of the cooling emission tower in petrochemical production, and a monitoring component is independently arranged between each negative pressure detection device and the cooling emission tower. The monitoring assembly is provided with a wind direction assembly for monitoring wind direction and wind speed, and is also provided with an ambient temperature module for monitoring ambient temperature and an infrared temperature detection module for upwardly monitoring the temperature of the exhaust smoke region, wherein the monitoring assembly is positioned in the region below the downstream boundary of the exhaust smoke region. The negative pressure detection equipment is provided with a vertically through air inlet wide-mouth, a sinking channel, a detection air cavity and a drainage channel from top to bottom, wherein the annular side of the detection air cavity is provided with a plurality of gas detection assemblies, the gas detection assemblies are provided with PH sensors and dust concentration sensors, and the periphery of each gas detection assembly is communicated with a negative pressure driving device.
As a preferable technical scheme of the monitoring device of the invention: a fixed frame is arranged below the monitoring component, and a rotating piece which is matched with the upper end of the fixed frame is arranged at the bottom side of the wind direction component.
As a preferable technical scheme of the monitoring device of the invention: the bottom of the detection air cavity is provided with a liquid flow slope matched with the drainage channel.
As a preferable technical scheme of the monitoring device of the invention: a circle of protective fence is arranged on the periphery of the negative pressure detection equipment, and a net cover is arranged on the top of the protective fence.
The invention relates to a petrochemical production emission dynamic monitoring method, which comprises the following steps:
step one, starting a monitoring component: when the cooling emission tower emits flue gas, each wind direction component monitors real-time wind direction and wind speed, and according to the wind direction, the control system starts negative pressure detection equipment of corresponding zone positions, and starts an environment temperature module and an infrared temperature detection module which are in the same zone positions with the negative pressure detection equipment.
Step two, starting negative pressure detection equipment: the control system acquires the ambient temperature sensed and monitored by the ambient temperature module and records the ambient temperature as Wa. The control system acquires the temperature of the exhaust smoke area detected upwards by the infrared temperature detection module and records the temperature as Wb, and the smoke temperature difference DeltaW=Wb-Wa. Control system driveThe total suction power of the air flow of the dynamic negative pressure detection device, denoted as Pz, f (P Z ) C f (ΔW). All negative pressure driving devices in the negative pressure detection equipment are synchronously started, and if the number of the negative pressure driving devices is n, the output power of each negative pressure driving device is PZ/n
Step three, starting a gas detection assembly: the negative pressure detection device is characterized in that the sucked air flow passes through the air inlet wide opening, the sinking channel and the detection air cavity, the PH and dust concentration of the air are detected by the air detection assembly, and the detected air is released by the negative pressure driving device.
Step four, regulating and controlling the air flow suction power: the wind speed information detected by the wind direction component in real time sensing is controlled to be obtained and recorded as V, and then the total air suction power f (P) Z )∝f(V)。
Step five, detecting smoke parameters: in the process that the negative pressure detection equipment sucks air flow, the air inlet wide-mouth part of the negative pressure detection equipment forms a peripheral cyclone area sucked, and the horizontal area of the peripheral cyclone area is recorded as Sz. In the peripheral cyclone surface, there is a smoke sinking surface area where the discharged smoke is attracted by the negative pressure detecting device, and the area of the smoke sinking surface area is denoted as Sy, f (S) z )∝f(V)，f(S y ) And c, f (V), the specific gravity of the smoke is lambda=Sy/Sz after the negative pressure detection device sucks the airflow. And if the PH value of the gas detected by the gas detection assembly is M, the PH value of the actual flue gas is M/lambda. If the gas dust concentration detected by the gas detection assembly is phi, the gas dust concentration of the actual flue gas is phi/lambda.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the negative pressure detection equipment is arranged at a plurality of positions on the downstream of the prevailing wind of the cooling discharge tower, the monitoring of wind direction, wind power, ambient temperature and smoke temperature is completed through the monitoring component, the forced negative pressure sinking absorption is carried out on the discharged smoke in an adaptive manner through the matching regulation and control of the real-time power of the negative pressure detection equipment, the operation energy consumption of the negative pressure detection equipment is reduced to a certain extent, the relationship between the peripheral cyclone area and the smoke sinking area is analyzed, the accurate parameter detection and analysis of the concentration of each component of the waste gas are completed according to the corresponding proportional relationship, and the phenomenon that the waste gas cannot be monitored by the monitoring equipment caused by the 'escape' monitoring area of the discharged smoke (caused by external factors) is avoided.
Drawings
Fig. 1 is a schematic diagram of the negative pressure detection device for carrying out forced negative pressure absorption on discharged smoke.
Fig. 2 is a schematic diagram of the negative pressure detection device for carrying out forced negative pressure absorption state change on the discharged smoke when the wind power is increased in the invention.
Fig. 3 is a schematic diagram of a smoke sinking area and a surrounding cyclone area formed when the negative pressure detection device performs forced negative pressure absorption on discharged smoke.
Fig. 4 is a schematic diagram of the negative pressure detecting device, the protective fence and the monitoring component in the invention.
FIG. 5 is a schematic diagram of the distribution of the monitoring assembly and the negative pressure detection device in the downstream position of the cooling exhaust tower.
Wherein: 1-cooling a discharge tower; 2-fixing frames; 3-monitoring components, 301-rotating parts, 302-wind direction components, 303-environment temperature modules and 304-infrared temperature detection modules; 4-protective fence, 401-mesh enclosure; 5-negative pressure detection equipment, 501-an air inlet wide port, 502-a sinking channel, 503-a detection air cavity, 504-a liquid flow slope, 505-a gas detection component, 506-a negative pressure driving device and 507-a drainage channel; 6-peripheral cyclonic area; 7-smoke sinking area.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The first embodiment of the invention relates to a petrochemical production emission dynamic monitoring device, which mainly comprises the following components:
first, regarding prevailing wind: the prevailing wind generally has a plurality of orientations, and each prevailing wind orientation is provided with a negative pressure detection device. The prevailing wind is also called the most wind direction, and refers to the wind or wind direction with the most frequency in a certain period of time in a region. The prevailing wind direction of the corresponding period is usually found statistically according to the period of day, month, season and year. The downwind area of the prevailing wind is most affected by pollution. The method is very significant for studying weather forecast, city planning, environmental pollution and the like by knowing the prevailing wind direction of a region. It should be noted that in plants built with atmospheric pollution: 1. should be trimmed down to the prevailing wind direction; 2. should be repaired in suburbs with vertical prevailing winds; 3. should be trimmed up to the minimum wind frequency.
Referring to fig. 1, 2 and 5, a plurality of negative pressure detecting devices 5 are distributed on the downstream side of the cooling and discharging tower 1 in petrochemical production where wind is prevailing, and a monitoring assembly 3 is located upstream of the negative pressure detecting devices 5 and downstream of the cooling and discharging tower 1.
The monitoring assembly 3 is located in the area below the downstream boundary of the region where flue gases are emitted. The descending boundary is the lowest point of a smoke flow area in a vertical direction in the process of inclining and sinking the discharged smoke under the influence of external prevailing wind when the cooling discharge tower 1 discharges the smoke. In the invention, the position of the monitoring component 3 is arranged in the area below the downlink boundary of the smoke discharge area, the first is to measure the wind direction and the wind speed more accurately, and the second is to measure the external ambient temperature of the non-smoke area.
Referring to fig. 3, when the negative pressure detecting device 5 performs air suction, on the same horizontal plane, a peripheral cyclone area 6 with a larger area is formed, and a smoke sinking area 7 sucked from the smoke discharge area is formed in the peripheral cyclone area 6.
Referring to fig. 4, the monitoring assembly 3 is configured with a wind direction assembly 302, an ambient temperature module 303, and an infrared temperature detection module 304, wherein the wind direction assembly 302 is used for monitoring the wind direction and the wind speed, the ambient temperature module 303 is used for monitoring the ambient temperature of the ambient temperature module 303, and the infrared temperature detection module 304 is used for monitoring the temperature of the exhaust smoke area.
A fixed frame 2 is arranged below the monitoring component 3, a rotating piece 301 which is matched with the upper end of the fixed frame 2 is arranged at the bottom side of the wind direction component 302, and when the wind direction component 302 detects the wind direction and the wind speed, the wind direction component 302 is rotationally matched with the real-time wind direction through the rotating piece 301.
A circle of protective fence 4 is arranged on the periphery of the negative pressure detection equipment 5, and a net cover 401 is arranged on the top of the protective fence 4. Wherein, the protective fence 4 is installed to prevent irrelevant personnel from contacting the negative pressure detection equipment 5, and the negative pressure detection equipment 5 is operated or generates great suction, and the situation that some people or children without safety consciousness are close to the negative pressure detection equipment 5 when playing nearby is avoided, and the net cover is just in order to prevent external sundries from being sucked into the negative pressure detection equipment 5.
The negative pressure detection equipment 5 is provided with a vertically through air inlet wide opening 501, a sinking channel 502, a detection air cavity 503 and a drainage channel 507 from top to bottom, and the bottom of the detection air cavity 503 is provided with a liquid flow slope 504 matched with the drainage channel 507.
The ring side of the detecting air cavity 503 is provided with a plurality of air detecting components 505 and a negative pressure driving device 506, the air detecting components 505 are provided with a PH sensor and a dust concentration sensor, the negative pressure driving device 506 is located at the periphery of the air detecting components 505, and the negative pressure driving device 506 can adopt a negative pressure pump or other devices capable of generating negative pressure power.
Referring to fig. 5, a plurality of monitoring assemblies 3 and negative pressure detecting devices 5 are arranged at the downstream position of the cooling and discharging tower 1 where wind is prevailing, and when the corresponding monitoring assemblies 3 and negative pressure detecting devices 5 operate at the downstream position of the wind direction, operations such as temperature monitoring, negative pressure suction and the like are performed on the discharged flue gas.
The second embodiment of the invention relates to a petrochemical production emission dynamic monitoring method, which mainly comprises the following steps:
first, the monitoring component is started. When the cooling and discharging tower 1 discharges smoke, each wind direction component 302 monitors real-time wind direction and wind speed, and according to the wind direction, the control system starts the negative pressure detection device 5 at the corresponding position, and starts the environment temperature module 303 and the infrared temperature detection module 304 at the same position as the negative pressure detection device 5.
And secondly, starting the negative pressure detection equipment. The control system obtains the ambient temperature sensed by the ambient temperature module 303, denoted Wa. The control system acquires the temperature of the region of the discharged smoke detected upwards by the infrared temperature detection module 304 and records the temperature as Wb, and the smoke is thenTemperature difference Δw=wb-Wa. The control system drives the air flow of the negative pressure detection device 5 to suck the total power, denoted as Pz, f (P Z ) C f (ΔW). The larger the temperature difference of the smoke is, the larger the rising trend of the smoke is, and the larger the total power of the suction of the smoke gas flow with the large rising trend is required to be sucked, and the negative pressure detection device 5 needs to suck the gas flow.
Third, the gas detection assembly is activated. The air flow sucked by the negative pressure detection device 5 passes through the air inlet wide opening 501, the sinking channel 502 and the detection air cavity 503, and passes through the air detection component 505 to detect the air PH and the air dust concentration, and the detected air is released by the negative pressure driving device 506.
Fourth, regulate and control the air current suction power. The larger the real-time wind speed V is, the lower the downlink boundary of the smoke discharge area is, the larger the vertical distance H between the negative pressure detection equipment 5 and the smoke discharge area is, and the negative pressure detection equipment 5 needs to output larger power to suck the smoke above the negative pressure detection equipment into the negative pressure detection equipment 5. The control acquires the wind speed information sensed and monitored by the wind direction component 302 in real time and is marked as V, and then the total air suction power f (P) of the negative pressure detection device 5 is calculated Z )∝f(V)。
Fifthly, detecting flue gas parameters. When the negative pressure detection device 5 sucks air under negative pressure, the flue gas above the negative pressure detection device is sucked, the ambient air is sucked, the sucked strength of the flue gas and the sucked strength of the ambient air are directly related to the output power of the negative pressure detection device 5, the larger the output power of the negative pressure detection device 5 is, the larger the sucked strength of the ambient air is, the larger the formed peripheral cyclone area 6 is, and the longer the area expansion rate of the flue gas is compared with the area expansion change rate of the ambient air of the negative pressure detection device 5, the slower the area expansion rate of the flue gas is discharged. That is, the larger the output power of the negative pressure detecting device 5, the more the peripheral cyclone area 6 expands relative to the smoke sinking area 7, for example, the output power of the negative pressure detecting device 5 has a value of P1 increased to P2, P2> P1, the area of the peripheral cyclone area 6 has a value of Sz1 increased to Sz2, the area of the smoke sinking area 7 has a value of Sy1 increased to Sy2, and Sz2/Sz1> Sy2/Sy1.
In the process of sucking air flow by the negative pressure detection equipment 5, the air inlet wide-mouth part of the negative pressure detection equipment 5 is shapedThe horizontal area of the peripheral cyclonic area 6 is denoted Sz, which is drawn into the peripheral cyclonic area 6. In the peripheral cyclone area 6, there is a smoke sinking area 7 in which the discharged smoke is attracted by the negative pressure detecting device 5, the area of the smoke sinking area 7 is denoted as Sy, f (S) z )∝f(V)，f(S y ) And c f (V), the smoke specific gravity is λ=sy/Sz after the negative pressure detecting device 5 sucks the airflow.
Assuming that the PH of the gas detected by the gas detection module 505 is M, the PH of the actual flue gas is M/λ. Let the gas dust concentration detected by the gas detection module 505 be phi, the gas dust concentration of the actual flue gas be phi/lambda. When the flue gas flow and the ambient air are just sucked by the negative pressure detection device 5, the flow is concentrated and compressed into the sinking channel 502, the flow speed of the air in the sinking channel 502 is accelerated, but after the air enters the detection air cavity 503 with increased volume, the air is split by the plurality of air detection assemblies 505 and the negative pressure driving device 506, and the flow speed of the split air is reduced again.
In addition, in the invention, all the negative pressure driving devices 506 in the negative pressure detection equipment 5 are synchronously started, the number of the negative pressure driving devices 506 is set to be n, the output power of each negative pressure driving device 506 is PZ/n, the rated power of all the negative pressure driving devices 506 in the negative pressure detection equipment 5 is the same, when the total output power of the negative pressure detection equipment 5 is small, the number of the negative pressure driving devices 506 is small, and when the total output power of the negative pressure detection equipment 5 needs to be increased, the number of the negative pressure driving devices 506 is large, so that after the air flow enters the negative pressure detection equipment 5, the air flow can uniformly enter each air detection assembly 505, and in order to improve the detection accuracy, various parameter value analysis modes in the mathematical statistics can be utilized to obtain more accurate parameters.
In addition, in the present invention, the gas detection module 505 is not directly installed at the high altitude because the installation at the high altitude is two ways, namely, the installation at the high altitude of the gas detection module 505 through a very high tower. Another is to fly to the high altitude with the gas detection assembly 505 using an unmanned aerial vehicle. Through the fixed tower, the bottom of the tower occupies a larger land area, the height of the high-altitude tower needs to be very high to reach the height of the discharged flue gas, and the gas detection assembly 505 is not beneficial to the normal maintenance of maintenance personnel at high altitude. Through unmanned aerial vehicle, the high-altitude unstable factor is more, and mostly needs the manual control unmanned aerial vehicle moreover. According to the invention, through the 'low position' negative pressure detection equipment 5, the 'energy-saving' adaptive 'forced' absorption and emission of smoke are realized, and the device is stable, reliable and convenient.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. A petrochemical production emissions dynamic monitoring device, characterized by:
the monitoring equipment comprises a plurality of negative pressure detection equipment (5), the negative pressure detection equipment (5) are distributed on the downstream side of the cooling and discharging tower (1) in petrochemical production, and a monitoring component (3) is independently arranged between each negative pressure detection equipment (5) and the cooling and discharging tower (1);
the monitoring assembly (3) is provided with a wind direction assembly (302) for monitoring wind direction and wind speed, and the monitoring assembly (3) is also provided with an ambient temperature module (303) for monitoring ambient temperature and an infrared temperature detection module (304) for upwardly monitoring the temperature of the exhaust smoke area;
wherein the monitoring component (3) is positioned in the area below the downlink boundary of the fume emission area;
the negative pressure detection equipment (5) is provided with a vertically-through air inlet wide opening (501), a sinking channel (502), a detection air cavity (503) and a drainage channel (507) from top to bottom, wherein a plurality of gas detection assemblies (505) are arranged on the annular side of the detection air cavity (503), a PH sensor and a dust concentration sensor are arranged on the gas detection assemblies (505), and a negative pressure driving device (506) is communicated with the periphery of each gas detection assembly (505).
2. A petrochemical production emissions dynamic monitoring device according to claim 1, wherein:
a fixed frame (2) is arranged below the monitoring component (3), and a rotating piece (301) which is matched with the upper end of the fixed frame (2) is arranged at the bottom side of the wind direction component (302).
3. A petrochemical production emissions dynamic monitoring device according to claim 1, wherein:
the bottom of the detection air cavity (503) is provided with a liquid flow slope (504) matched with the drainage channel (507).
4. A petrochemical production emissions dynamic monitoring device according to claim 1, wherein:
the periphery of the negative pressure detection equipment (5) is provided with a circle of protective fence (4), and the top of the protective fence (4) is provided with a net cover (401).
5. A petrochemical production emission dynamic monitoring method, characterized in that the petrochemical production emission dynamic monitoring device according to any one of claims 1 to 4 is adopted, comprising the following steps:
step one, starting a monitoring assembly
When the cooling exhaust tower (1) exhausts flue gas, each wind direction component (302) monitors real-time wind direction and wind speed, and according to the wind direction, the control system starts the negative pressure detection equipment (5) at the corresponding position, and starts the environmental temperature module (303) and the infrared temperature detection module (304) at the same position as the negative pressure detection equipment (5);
step two, starting negative pressure detection equipment
The control system acquires the ambient temperature sensed and monitored by the ambient temperature module (303), and records the ambient temperature as Wa;
the control system acquires the temperature of the exhaust smoke area detected upwards by the infrared temperature detection module (304), and records the temperature as Wb, and the smoke temperature difference DeltaW=Wb-Wa;
the control system drives the air flow of the negative pressure detection device (5) to suck the total power, denoted as Pz, f (P) Z )∝f(ΔW)；
Step three, starting a gas detection assembly
The negative pressure detection equipment (5) sucks air flow, passes through an air inlet wide port (501), a sinking channel (502) and a detection air cavity (503), passes through a gas detection assembly (505) to detect the PH and dust concentration of the air, and releases the detected air through a negative pressure driving device (506);
step four, air flow suction power regulation and control
The wind direction component (302) is controlled to acquire the wind speed information monitored by real-time sensing, and the wind speed information is recorded as V;
the total power f (P) of the suction of the air flow of the negative pressure detecting device (5) Z )∝f(V)；
Step five, flue gas parameter detection
In the process that the negative pressure detection equipment (5) sucks air flow, a suction surrounding cyclone area (6) is formed at the air inlet wide opening of the negative pressure detection equipment (5), and the horizontal area of the surrounding cyclone area (6) is recorded as Sz;
in the peripheral cyclone area (6), a smoke sinking area (7) formed by sucking discharged smoke by the negative pressure detection equipment (5) exists, and the area of the smoke sinking area (7) is denoted as Sy;
f (S) z )∝f(V)，f(S y )∝f(V)；
The specific gravity of the smoke is lambda=Sy/Sz after the negative pressure detection device (5) sucks the airflow;
setting the PH value of the gas detected by the gas detection component (505) as M, and setting the PH value of the actual flue gas as M/lambda;
if the gas dust concentration detected by the gas detection component (505) is phi, the gas dust concentration of the actual flue gas is phi/lambda.
6. A petrochemical production emissions dynamic monitoring method according to claim 5, wherein:
all negative pressure driving devices (506) in the negative pressure detection equipment (5) are synchronously started, and if the number of the negative pressure driving devices (506) is n, the output power of each negative pressure driving device (506) is PZ/n.
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