CN117030952A - Flue gas monitoring device - Google Patents
Flue gas monitoring device Download PDFInfo
- Publication number
- CN117030952A CN117030952A CN202311303723.4A CN202311303723A CN117030952A CN 117030952 A CN117030952 A CN 117030952A CN 202311303723 A CN202311303723 A CN 202311303723A CN 117030952 A CN117030952 A CN 117030952A
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- Prior art keywords
- bin
- detection
- smoke
- flue gas
- monitoring device
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Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000003546 flue gas Substances 0.000 title claims abstract description 78
- 238000012806 monitoring device Methods 0.000 title claims abstract description 31
- 239000000779 smoke Substances 0.000 claims abstract description 133
- 238000001514 detection method Methods 0.000 claims abstract description 106
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 11
- 230000023556 desulfurization Effects 0.000 claims abstract description 11
- 238000000746 purification Methods 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 33
- 238000004140 cleaning Methods 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 36
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 13
- 238000009826 distribution Methods 0.000 description 5
- 235000019504 cigarettes Nutrition 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Classifications
-
- 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
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0037—Specially adapted to detect a particular component for NOx
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The application relates to the technical field of environmental monitoring of thermal power plants, in particular to a smoke monitoring device. The monitoring device includes: the detection chambers are used for detecting the NOx concentration of the flue gas entering the detection chambers and discharging the flue gas to the purification chamber or the atmosphere; the purification bin is used for adjusting the concentration of NOx in the flue gas from the detection bin to be below a threshold value and then discharging the flue gas to the atmosphere; the collecting and distributing device is used for collecting the flue gas exhausted by the desulfurization equipment and distributing the collected flue gas to the detection bin according to a preset rule; the preset rules comprise: acquiring the intra-bin pressure value of the detection bin in real time; judging the corresponding detection bin as a receivable bin or an unreceivable bin based on the bin pressure value of the detection bin; and distributing the flue gas to the receivable bins until the receivable bins become non-receivable bins. The monitoring device provided by the application can avoid the environmental pollution caused by the emission of out-of-standard nitrogen oxides into the atmosphere.
Description
Technical Field
The application relates to the technical field of environmental monitoring of thermal power plants, in particular to a smoke monitoring device.
Background
The power generation of the thermal power plant can lead the burnt coal to generate a large amount of sulfur and nitrate flue gas, and the flue gas is discharged into the atmosphere to generate pollution to form acid rain, so the generated flue gas needs to be desulfurized and denitrated, and the flue gas desulfurization and denitration technology is a boiler flue gas purification technology applied to the chemical industry for generating multiple nitrogen oxides and sulfur oxides. Nitrogen oxides, sulfur oxides are one of the major sources of air pollution. Known flue gas desulfurization and denitrification technologies include PAFP, ACFP, pyrolusite method, electron beam ammonia method, pulse corona method, gypsum wet method, catalytic oxidation method, microbial degradation method and the like.
For the flue gas after desulfurization and denitrification, the flue gas is usually directly discharged into the atmosphere, or is subjected to simple sampling inspection, and the flue gas cannot be subjected to full inspection. Therefore, the flue gas can still store out-of-standard nitrogen oxides after denitration and desulfurization, and the out-of-standard nitrogen oxides are discharged, so that the environment is polluted.
Disclosure of Invention
The embodiment of the application aims to provide a smoke monitoring device for avoiding the emission of out-of-standard nitrogen oxides into the atmosphere to cause environmental pollution.
In order to achieve the above object, the present application provides a smoke monitoring device, including: the detection chambers are used for detecting the NOx concentration of the flue gas entering the detection chambers and discharging the flue gas to the purification chamber or the atmosphere; the purification bin is used for adjusting the concentration of NOx in the flue gas from the detection bin to be below a threshold value and then discharging the flue gas to the atmosphere; the collecting and distributing device is used for collecting the flue gas exhausted by the desulfurization equipment and distributing the collected flue gas to the detection bin according to a preset rule; wherein the detection bin comprises a receivable bin and an unreceivable bin; the preset rule comprises the following steps: acquiring the intra-bin pressure value of the detection bin in real time; judging the corresponding detection bin as a receivable bin or an unreceivable bin based on the bin pressure value of the detection bin; distributing the flue gas to the receivable bins until the receivable bins become non-receivable bins; the receivable bin is a detection bin with the pressure value in the bin being lower than a preset value, and the non-receivable bin is a detection bin with the pressure value in the bin being not lower than the preset value.
In some embodiments of the application, the detection cartridge comprises: a bin body; and the detection device is arranged in the bin body and is used for detecting the concentration of NOx in the flue gas entering the bin body.
In some embodiments of the present application, a bin body of the detection bin is provided with a smoke inlet and a smoke outlet, and the detection bin further includes: the first opening and closing mechanism is arranged at the smoke inlet and is used for opening or closing the smoke inlet; the second opening and closing mechanism is arranged at the smoke outlet and is used for opening or closing the smoke outlet; the monitoring device further includes: and a controller for acquiring the NOx concentration detection value from the detection device and controlling the first opening and closing mechanism and the second opening and closing mechanism to operate according to the NOx concentration detection value.
In some embodiments of the application, a smoke outlet is arranged on the bin body of the detection bin, and a smoke inlet is arranged on the purification bin; the monitoring device further includes: the first pipeline is used for communicating the smoke outlet and the smoke inlet; the suction fan is communicated with the pipeline of the first pipeline and is used for sucking the flue gas in the bin body into the purifying bin; the third opening and closing mechanism is arranged at the smoke outlet and used for opening or closing the smoke outlet; the controller is further configured to: controlling the third opening and closing mechanism to act; and when the NOx concentration detection value obtained from the detection device is larger than the threshold value, controlling the starting of the suction fan to suck the smoke out of the smoke outlet and send the smoke to the smoke inlet until the NOx concentration detection value obtained from the detection device is recovered below the threshold value, and controlling the closing of the suction fan.
In some embodiments of the present application, the cut surface of the smoke inlet is circular, and the first opening and closing mechanism includes: the plugging rod is matched with the size of the smoke inlet and is arranged at the smoke inlet; the first electric push rod is provided with a telescopic end and a fixed end, is fixed in the bin body of the detection bin through the fixed end, and drives the plugging rod to plug the smoke inlet through the telescopic end; the controller is also used for controlling the first electric push rod to act.
In some embodiments of the application, the first opening and closing mechanism further includes: the spring is sleeved outside the plugging rod, two ends of the spring are respectively fixed with one end of the plugging rod and the inner wall of the bin body of the detection bin, and the other end of the plugging rod is arranged facing the smoke inlet.
In some embodiments of the application, the third opening and closing mechanism includes: the cover plate is arranged at the smoke outlet and is connected with the outer side wall of the bin body of the detection bin through a torsion spring; the second electric push rod is provided with a telescopic end and a fixed end, the fixed end of the second electric push rod is fixed in the bin body of the detection bin, and the cover plate is driven to open or close the smoke outlet through the telescopic end; the controller is also used for controlling the second electric push rod to act.
In some embodiments of the present application, the first electric putter and the second electric putter are the same electric putter; the smoke outlet and the smoke inlet are positioned on the same side wall of the bin body, and the smoke outlet is positioned right above the smoke inlet; the third opening and closing mechanism further includes: the pushing strip is arranged in the bin body of the detection bin, one end of the pushing strip is close to the smoke outlet, and the other end of the pushing strip is close to the smoke inlet; one end of the spring connected with the plugging rod is abutted with the pushing strip; the telescopic end of the first electric push rod is connected with the pushing strip; the pushing block, one end and the pushing strip fixed connection of pushing block, the other end is used for promoting the apron and opens the exhaust port, the longest diagonal or the footpath length of pushing block's cross section is less than the shortest side or the footpath length of exhaust port.
In some embodiments of the present application, the bin body is further provided with: the annular cleaning plate is matched with the bin body and used for cleaning the inner side wall of the bin body; the telescopic end of the lifting rod is connected with the annular cleaning plate, the other end of the lifting rod is fixedly connected with the bottom wall of the bin body, and the lifting rod is used for driving the annular cleaning plate to ascend or descend through telescopic action; the lifting rod is connected with the controller, and the controller is also used for controlling the lifting rod to execute telescopic action.
In some embodiments of the application, the monitoring device further comprises: the alarm is connected with the controller; the controller is also used for controlling the alarm to send out an alarm signal when the NOx concentration detection value obtained from the detection device is larger than a threshold value.
The application has at least the following beneficial effects:
according to the application, whether the flue gas exhausted by the desulfurization equipment accords with the emission standard (whether the concentration of NOx in the flue gas is greater than a threshold value) is detected through traversing of the detection bin (a plurality of detection bins can be used for simultaneous detection), and the flue gas is limited in the relatively closed space of the detection bin, so that the flue gas which does not accord with the emission standard due to uneven gas flow can be prevented from being exhausted. The concentration value of NOx detected by the detection bin is closer to the average value, so that the emission of out-of-standard nitrogen oxides into the atmosphere and the environmental pollution can be avoided.
Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:
fig. 1 schematically shows a schematic block diagram of a monitoring device according to an embodiment of the present application;
fig. 2 schematically shows a schematic structural view of the interior of the cartridge body of the detection cartridge.
Description of the reference numerals
1-a detection bin; 11-a smoke inlet; 12-a smoke outlet; 13-a plugging rod; 14-a spring; 15-pushing the strip; 16-an electric push rod; 17-a smoke outlet; 18-pushing blocks; 2-detecting means; 3-a controller; 4-an alarm; 5-purifying bin; 51-a suction fan; 6-cover plate; 61-torsion spring; 7-an annular cleaning plate; 8-a stepper motor; 9-a threaded rod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it should be understood that the detailed description described herein is merely for illustrating and explaining the embodiments of the present application, and is not intended to limit the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, if directional indications (such as up, down, left, right, front, rear, etc.) are involved in the embodiment of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Example 1
As shown in fig. 1, the present embodiment provides a smoke monitoring device, including: a plurality of detecting chambers 1 for detecting the NOx concentration of the flue gas entering the detecting chambers 1 and discharging the flue gas to a purifying chamber 5 or to the atmosphere; the purifying bin 5 is used for adjusting the concentration of NOx in the flue gas from the detecting bin 1 to be below a threshold value and then discharging the flue gas to the atmosphere; the collecting and distributing device is used for collecting the flue gas exhausted by the desulfurization equipment and distributing the collected flue gas to the detection bin 1 according to a preset rule; wherein the detection bin 1 comprises a receivable bin and an unreceivable bin; the preset rule comprises the following steps: acquiring the intra-bin pressure value of the detection bin 1 in real time; judging the corresponding detection bin 1 as a receivable bin or an unreceivable bin based on the bin pressure value of the detection bin 1; distributing the flue gas to the receivable bins until the receivable bins become non-receivable bins; the receivable bin is a detection bin 1 with a bin internal pressure value lower than a preset value, and the non-receivable bin is a detection bin 1 with a bin internal pressure value not lower than the preset value.
Specifically, the detection bin 1 includes: the bin body is used for temporarily accommodating the flue gas exhausted by the desulfurization equipment; the detection device 2 is arranged in the bin body and used for detecting the concentration of NOx in the flue gas. Wherein, the storehouse body can be the rectangle storehouse, is equipped with into cigarette mouth 11 and play cigarette mouth 12 on the storehouse body, and the position that is close to the bottom on the lateral wall of the storehouse body is set up into cigarette mouth 11, and play cigarette mouth 12 sets up on the roof of the storehouse body. The detection bin 1 further comprises: a first opening and closing mechanism for controlling the opening or closing of the smoke inlet 11; and a second opening and closing mechanism for controlling the opening or closing of the smoke outlet 12.
If the smoke inlet 11 is circular, the first opening and closing mechanism includes: a plugging rod 13 which is matched with the size of the smoke inlet and is used for plugging the smoke inlet 11; the first electric push rod is fixed in the bin body and used for controlling the plugging rod 13 to plug the smoke inlet 11; the first electric push rod is electrically connected with the controller 3. The plugging rod 13 can be directly connected with the telescopic end of the first electric push rod, and the opening and closing of the smoke inlet 11 can be controlled by controlling the telescopic of the first electric push rod. Further, the plugging rod 13 may not be fixedly connected with the first electric push rod. Specifically, a spring 14 can be sleeved outside the plugging rod 13, one end of the spring 14 is fixedly connected with one end of the plugging rod 13, and the other end of the spring 14 faces the smoke inlet 11 and is fixedly connected with the inner wall of the bin body. Under the condition that the spring 14 is not stressed, the plugging rod 13 is positioned in the spring 14, the smoke inlet 11 is in an open state, when the spring 14 is stressed by the first electric push rod, the length is shortened, a part of the plugging rod 13 is extruded out of the spring 14, the extruded part is opposite to the smoke inlet 11, and the smoke inlet 11 is in a closed state at the moment. In addition, the second opening and closing mechanism may be a mechanism similar to the first opening and closing mechanism or other electric opening and closing valve, and will not be described here.
In order to control the opening and closing of the smoke inlet 11 or the smoke outlet 12, the monitoring device further comprises: the controller 3, the first opening and closing mechanism, the second opening and closing mechanism, and the detecting device 2 are electrically connected to the controller 3, respectively.
Further, a smoke outlet 17 is formed in the bin body, and a smoke inlet is formed in the purifying bin 5; the monitoring device further includes: a first pipe for communicating the smoke outlet 17 and the smoke inlet; a suction fan 51, which is communicated with the first pipeline and is used for sucking the flue gas with the concentration of NOx being greater than a threshold value out of the smoke outlet 17 and sending the flue gas to the smoke inlet; a third opening and closing mechanism for controlling the opening or closing of the smoke outlet 17; the third opening and closing mechanism and the suction fan 51 are electrically connected to the controller 3, respectively. Wherein the third opening and closing mechanism includes: the cover plate 6 is connected with the inner wall of the bin body through a torsion spring 61 and is used for opening or closing the smoke outlet 17; the second electric push rod is fixed in the bin body and is used for driving the cover plate 6 to open or close the smoke outlet 17. If the first electric push rod and the second electric push rod are simultaneously placed in the bin body, the space in the bin body is obviously occupied, and the detection efficiency of smoke is affected, so that the fact that the smoke inlet 11 and the smoke outlet 17 are simultaneously controlled to be opened and closed through the same electric push rod is considered in the embodiment. In this embodiment, the smoke inlet 11 needs to be controlled to be closed and the smoke outlet 17 needs to be controlled to be opened at the same time, and when the smoke inlet 11 is opened, the smoke outlet 17 needs to be closed. Illustratively, the following structures and arrangements may be employed to meet the above requirements:
the smoke outlet 17 and the smoke inlet 11 are positioned on the same side wall of the bin body, and the smoke outlet 17 is positioned right above the smoke inlet 11; the first opening and closing mechanism or the third opening and closing mechanism further includes: the pushing strip 15 is arranged in the bin body, one end of the pushing strip 15 is close to the smoke outlet 17, and the other end of the pushing strip is close to the smoke inlet 11; one end of the spring 14 connected with the plugging rod 13 is abutted with the pushing strip 15; the telescopic end of the first electric push rod is connected with the push bar 15; the pushing block 18, one end of the pushing block 18 is fixedly connected with the pushing strip 15, the other end is used for pushing the cover plate 6 to open the smoke outlet 17, and the longest diagonal or the radial length of the cross section of the pushing block 18 is smaller than the shortest edge or the radial length of the smoke outlet 17; when the plugging rod 13 passes through the smoke inlet 11 to plug the smoke inlet 11, the pushing block 18 passes through the smoke outlet 17 to push the cover plate 6 to open the smoke outlet 17; when the plugging rod 13 leaves the smoke inlet 11 and is completely placed in the detection bin 1, the pushing block 18 also leaves the smoke outlet 17 and is completely placed in the detection bin 1, and the cover plate 6 rebounds to seal the smoke outlet 17 through the torsion spring 61.
In addition, regarding the detection device 2, the detection device 2 can be fixed inside the bin body, the detection device 2 is fixed at one end of the bin body far away from the ground, the detection device 2 is electrically connected with the controller 3, the electric push rod 16 is electrically connected with the controller 3, the alarm 4 is electrically connected with the controller 3, when the desulfurized flue gas enters from the flue inlet 11, the detection device 2 monitors the flue gas, if the content of nitrogen oxides in the flue gas is higher, the detection device 2 transmits a signal to the controller 3, the controller 3 transmits the signal to the alarm 4, the alarm 4 emits sound, so that the attention of an operator is brought, meanwhile, the controller 3 transmits the signal to the electric push rod 16, so that the telescopic end of the electric push rod 16 moves, the pushing bar 15 slides in the horizontal direction, the pushing bar 15 pushes the plugging bar 13 until the plugging bar 13 plugs the flue gas into the flue inlet 11, and the desulfurized flue gas is blocked from continuing to enter the bin body.
The suction fan 51 is fixed in the position of the bin body where the smoke outlet 17 is formed, the suction fan 51 is communicated with the bin body, the smoke outlet 17 is aligned to the suction inlet of the suction fan 51, one end of the suction fan 51, which is far away from the bin body, is communicated with the purifying bin 5 through the first pipeline, the purifying bin 5 is communicated with the suction fan 51, when the condition that the content of nitrogen oxides in smoke entering the bin body is high is monitored, the suction fan 51 is started, and the smoke is sucked into the purifying bin 5 for treatment, so that the environment is prevented from being polluted.
Because the emission of flue gas is great, if all put into a detection storehouse 1 (storehouse body), still there is the inhomogeneous or the low problem of mixing efficiency of misce bene, and then easily influence the accuracy of sensor detection or have the low problem of detection efficiency. Preferably, the present embodiment solves the above problem by providing a plurality of detecting chambers 1, and the volume of the detecting chamber 1 may not be too large, so as to ensure the accuracy and the efficiency of the detection. When a plurality of detection bins 1 exist, the problem of distribution of the flue gas is solved, so that the flue gas is uniformly collected and then uniformly distributed according to a preset rule by additionally arranging the collection and distribution device.
In the case that the volume of the detecting bin 1 is known, the pressure in the detecting bin 1 can intuitively reflect the amount of smoke in the bin, so in this embodiment, the detecting bin 1 is divided into a receivable bin and an unreceivable bin (the receivable bin and the unreceivable bin belong to a real-time state and dynamically change with time and are not changed) based on whether the pressure in the bin exceeds a threshold value, and the receivable bin indicates that the pressure value in the detecting bin 1 has not reached the threshold value, and the smoke can be continuously received (the unreceivable bin is the opposite). If the pressure in the detecting chambers 1 needs to be detected in real time, it means that pressure sensors are also required to be respectively arranged in each detecting chamber 1, and then the pressure values obtained by the pressure sensors judge whether each detecting chamber 1 is a receivable chamber or an unreceivable chamber in real time.
The specific distribution flow of the collecting and distributing device is as follows: the pressure values in the detection bins 1 (in the bin bodies) are respectively obtained, whether the corresponding detection bin 1 is a receivable bin or not is respectively judged based on the bin pressure values, the collecting and distributing device distributes the flue gas to the receivable bin until the receivable bin becomes an unreceivable bin (the bin pressure reaches or exceeds a threshold value), and for the unreceivable bin, the flue gas in the bin is required to be discharged into the atmosphere after the detection is completed or is sent to the purification bin 5 (the bin pressure becomes low and is converted into the receivable bin) after the unreceivable bin is required to be waited for the completion of detection, and then the flue gas is distributed.
The number of the detection bins 1, the configuration volume and the configuration volume of the collection and distribution device can be comprehensively considered in advance based on the flow rate of the flue gas, the single detection time of the detection bins 1 and other factors, so that the situation that all the detection bins 1 are in an unacceptable state when the flue gas capacity in the collection and distribution device reaches the upper limit of the capacity is avoided.
Example 2
In this embodiment, the bin body is further provided with: an annular cleaning plate 7 (in this embodiment, the bin body is rectangular, so the corresponding annular cleaning plate 7 is also rectangular ring, as shown in fig. 2), and the annular cleaning plate 7 is adapted to the bin body for cleaning the inner side wall of the bin body; the telescopic end of the lifting rod is connected with the annular cleaning plate 7, and the other end of the lifting rod is fixedly connected with the bottom wall of the bin body and used for controlling the annular cleaning plate 7 to ascend or descend. Specifically, the lifter includes threaded rod 9 and step motor 8, and wherein the one end and the annular cleaning plate 7 of threaded rod 9 are connected, and the other end is connected with step motor 8's pivot, and step motor 8 is connected with controller 3, and the lift of annular cleaning plate 7 can be controlled to brake through controlling step motor 8 positive and negative rotation, and annular cleaning plate 7 can scratch the inner wall of the storehouse body and clear up at the lift in-process. Specifically, can fix step motor 8 in the roof inboard of the storehouse body, step motor 8 pivot sets up towards ground, step motor 8 pivot's length direction is the same with the length direction of the storehouse body, be fixed with threaded rod 9 in the step motor 8 pivot, threaded rod 9's length direction is the same with the length direction of step motor 8 pivot, threaded rod 9 keeps away from step motor 8 one end and is close to inlet 11, annular cleaning plate 7 is provided with to the ring cover on threaded rod 9, annular cleaning plate 7 and threaded rod 9 threaded connection, annular cleaning plate 7 is complete with the internal wall butt in storehouse, annular cleaning plate 7 and the internal wall sliding connection in storehouse, sliding direction sets up along the internal wall sliding connection in storehouse, the slag notch has been seted up to storehouse body bottom, when need clear up the internal wall in storehouse, start step motor 8, step motor 8 pivot rotates, thereby threaded rod 9 rotates, annular cleaning plate 7 slides, thereby clear up the internal wall in the storehouse, the sediment that will clear up the production is discharged from the slag notch.
Example 3
Specifically, the monitoring device further includes: and the alarm 4 is connected with the controller 3, and the controller 3 is further used for controlling the alarm 4 to send an alarm signal to prompt staff when the NOx concentration detection value obtained from the detection device 2 is greater than a threshold value. The flue gas generated by desulfurization enters the detection bin 1 from the flue gas inlet 11, the detection device 2 is contacted with the flue gas, signals are transmitted to the controller 3, if the flue gas still contains out-of-standard nitrogen oxides, the alarm 4 gives an alarm, the flue gas inlet 11 is closed, and the flue gas is continuously sent into the purification bin 5 for treatment; if the content of nitrogen oxides in the flue gas accords with the standard, the flue gas outlet 12 is opened, the flue gas is discharged, and the existence of the alarm 4 is convenient for monitoring the effect of the flue gas discharge condition.
In this embodiment, the implementation principle of the monitoring device is as follows: when the desulfurized flue gas enters the bin body, the content of nitrogen oxides in the flue gas is higher, the detection device 2 transmits signals to the controller 3, the controller 3 transmits signals to the alarm 4, the alarm 4 gives out an alarm, the controller 3 transmits signals to the electric push rod 16, the electric push rod 16 is started, the pushing strip 15 slides until the plugging rod 13 plugs the flue inlet 11, the pushing block 18 pushes the cover plate 6 open, the smoke outlet 17 is opened, the suction fan 51 is started again, the suction fan 51 sucks the flue gas into the purifying bin 5 until the treatment is completed, the electric push rod 16 is started again, the plugging rod 13 and the pushing block 18 slide back into the bin body, when the bin body needs to be cleaned, the stepping motor 8 rotates through the rotating shaft of the stepping motor 8, and the annular cleaning plate 7 slides to clean the inner wall of the bin body.
In addition, since the smoke vent 17 needs the pushing block 18 to push the cover plate 6 through the smoke vent 17 to open, it is necessary to ensure that the longest diagonal or the radial length of the pushing block 18 is smaller than the shortest side or the radial length of the smoke vent 17, i.e. can pass through the smoke vent 17 without blocking the smoke vent, and the longest diagonal or the radial length of the pushing block 18 is preferably smaller than 1/3 of the shortest side or the radial length of the smoke vent 17.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (10)
1. A smoke monitoring device, characterized in that the monitoring device comprises:
a plurality of detection bins (1) for detecting the NOx concentration of the flue gas entering the detection bins (1) and discharging the flue gas to a purification bin (5) or into the atmosphere;
the purifying bin (5) is used for adjusting the concentration of NOx in the flue gas from the detecting bin (1) to be below a threshold value and then discharging the flue gas into the atmosphere;
the collecting and distributing device is used for collecting the flue gas exhausted by the desulfurization equipment and distributing the collected flue gas to the detection bin (1) according to a preset rule; wherein,
the detection bin (1) comprises a receivable bin and an unreceivable bin; the preset rule comprises the following steps:
acquiring a bin pressure value of a detection bin (1) in real time;
judging the corresponding detection bin (1) as a receivable bin or an unreceivable bin based on the bin pressure value of the detection bin (1);
distributing the flue gas to the receivable bins until the receivable bins become non-receivable bins;
the receivable bin is a detection bin (1) with the pressure value in the bin being lower than a preset value, and the non-receivable bin is a detection bin (1) with the pressure value in the bin being not lower than the preset value.
2. The smoke monitoring device according to claim 1, wherein said detection cartridge (1) comprises:
a bin body;
and the detection device (2) is arranged in the bin body and is used for detecting the concentration of NOx in the flue gas entering the bin body.
3. The smoke monitoring device according to claim 2, characterized in that the bin body of the detection bin (1) is provided with a smoke inlet (11) and a smoke outlet (12);
the detection bin (1) further comprises:
the first opening and closing mechanism is arranged at the smoke inlet (11) and is used for opening or closing the smoke inlet (11);
the second opening and closing mechanism is arranged at the smoke outlet (12) and is used for opening or closing the smoke outlet (12);
the monitoring device further includes:
and a controller (3) for acquiring the NOx concentration detection value from the detection device (2), and controlling the first opening and closing mechanism and the second opening and closing mechanism to operate according to the NOx concentration detection value.
4. A smoke monitoring device according to claim 3, characterized in that the bin body of the detection bin (1) is provided with a smoke outlet (17), and the purification bin (5) is provided with a smoke inlet; the monitoring device further includes:
the first pipeline is used for communicating the smoke outlet (17) and the smoke inlet;
the suction fan (51) is communicated with a pipeline of the first pipeline and is used for sucking the flue gas in the bin body into the purifying bin (5);
the third opening and closing mechanism is arranged at the smoke outlet (17) and is used for opening or closing the smoke outlet (17);
the controller (3) is further configured to:
controlling the third opening and closing mechanism to act; and
when the detected value of the NOx concentration obtained from the detection device (2) is larger than the threshold value, the suction fan (51) is controlled to be started to suck the smoke out of the smoke outlet (17) and send the smoke to the smoke inlet until the detected value of the NOx concentration obtained from the detection device (2) is recovered to be below the threshold value, and the suction fan (51) is controlled to be stopped.
5. The smoke monitoring device according to claim 4, wherein the cut surface of the smoke inlet (11) is circular, and the first opening and closing mechanism comprises:
the plugging rod (13) is matched with the size of the smoke inlet (11) and is arranged at the smoke inlet (11);
the first electric push rod is provided with a telescopic end and a fixed end, is fixed in the bin body of the detection bin (1) through the fixed end, and drives the plugging rod (13) to plug the smoke inlet (11) through the telescopic end;
the controller (3) is also used for controlling the first electric push rod to act.
6. The smoke monitoring device of claim 5, wherein said first opening and closing mechanism further comprises:
the spring (14) is sleeved outside the plugging rod (13), two ends of the spring (14) are respectively fixed with one end of the plugging rod (13) and the inner wall of the bin body of the detection bin (1), and the other end of the plugging rod (13) is arranged facing the smoke inlet (11).
7. The smoke monitoring device of claim 6, wherein said third opening and closing mechanism comprises:
the cover plate (6) is arranged at the smoke outlet (17) and is connected with the outer side wall of the bin body of the detection bin (1) through a torsion spring (61);
the second electric push rod is provided with a telescopic end and a fixed end, the fixed end of the second electric push rod is fixed in the bin body of the detection bin (1), and the cover plate (6) is driven by the telescopic end to open or close the smoke outlet (17);
the controller (3) is also used for controlling the second electric push rod to act.
8. The smoke monitoring device of claim 7, wherein said first and second electric pushers are the same electric pushers; the smoke outlet (17) and the smoke inlet (11) are positioned on the same side wall of the bin body, and the smoke outlet (17) is positioned right above the smoke inlet (11);
the third opening and closing mechanism further includes:
the pushing strip (15) is arranged in the bin body of the detection bin (1), one end of the pushing strip (15) is close to the smoke outlet (17), and the other end of the pushing strip is close to the smoke inlet (11); one end of the spring (14) connected with the plugging rod (13) is abutted with the pushing strip (15); the telescopic end of the first electric push rod is connected with a push bar (15);
the pushing block (18), one end and the pushing strip (15) fixed connection of pushing block (18), the other end is used for promoting apron (6) and opens exhaust port (17), the longest diagonal or the footpath length of the cross section of pushing block (18) is less than the shortest side or the footpath length of exhaust port (17).
9. A smoke monitoring device according to claim 3, wherein the cartridge body is further provided with:
the annular cleaning plate (7) is matched with the bin body and used for cleaning the inner side wall of the bin body;
the telescopic end of the lifting rod is connected with the annular cleaning plate (7), the other end of the lifting rod is fixedly connected with the bottom wall of the bin body, and the lifting rod is used for driving the annular cleaning plate (7) to ascend or descend through telescopic action; the lifting rod is connected with the controller, and the controller (3) is also used for controlling the lifting rod to execute telescopic action.
10. A smoke monitoring device according to claim 3, wherein the monitoring device further comprises:
the alarm (4) is connected with the controller (3);
the controller (3) is further used for controlling the alarm (4) to send out an alarm signal when the NOx concentration detection value acquired from the detection device (2) is larger than a threshold value.
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| CN202311303723.4A CN117030952B (en) | 2023-10-10 | 2023-10-10 | Flue gas monitoring device |
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