CN106501034B - High-temperature high-dust flue gas sampling and monitoring device - Google Patents
High-temperature high-dust flue gas sampling and monitoring device Download PDFInfo
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- CN106501034B CN106501034B CN201611195211.0A CN201611195211A CN106501034B CN 106501034 B CN106501034 B CN 106501034B CN 201611195211 A CN201611195211 A CN 201611195211A CN 106501034 B CN106501034 B CN 106501034B
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- 238000005070 sampling Methods 0.000 title claims abstract description 238
- 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 77
- 239000000428 dust Substances 0.000 title claims abstract description 40
- 238000012806 monitoring device Methods 0.000 title description 4
- 238000012544 monitoring process Methods 0.000 claims abstract description 74
- 239000000779 smoke Substances 0.000 claims abstract description 65
- 239000000523 sample Substances 0.000 claims abstract description 64
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000000746 purification Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 59
- 238000007664 blowing Methods 0.000 claims description 36
- 238000010926 purge Methods 0.000 claims description 34
- 239000002245 particle Substances 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000010431 corundum Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000004868 gas analysis Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a device for sampling and monitoring high-temperature and high-dust flue gas, which comprises: the device comprises a sampling probe assembly, a sampling tube assembly, a monitoring system and a power assembly, wherein one end of the sampling probe assembly stretches into a smoke pipeline to extract smoke, and the other end of the sampling probe assembly is connected with one end of the sampling tube assembly; the other end of the sampling tube component, which is far away from the sampling probe component, is connected with the monitoring system; the power assembly is connected with the outlet section of the monitoring system in parallel so as to drive the sampling smoke to flow, wherein the sampling probe assembly is used for extracting the smoke, and the smoke is provided for the sampling tube assembly after being subjected to primary cooling and purification; the sampling tube assembly is used for conveying the sampled flue gas to the monitoring system after the sampled flue gas is subjected to secondary cooling and purification; the monitoring system is used for monitoring the transmitted sampling smoke in real time. The technical scheme of the invention aims to provide the sampling smoke for cooling and purifying for sampling and monitoring the smoke with high temperature and high dust.
Description
Technical Field
The invention relates to the field of high-temperature flue gas sampling and monitoring, in particular to a device for sampling and monitoring high-temperature and high-dust flue gas.
Background
The pollution paths of the air mainly comprise arbitrary emission of factory waste gas and combustion of a large amount of fuel, wherein harmful gases comprise carbon monoxide, nitrogen dioxide, sulfur dioxide and the like, greenhouse gases comprise carbon dioxide, methane, nitrous oxide and the like, and how to study the source emission gas to control the emission of the harmful gases is urgent. However, in practical industrial production, the exhaust smoke is generally high in temperature and accompanied by a large amount of dust, and if accurate gas analysis is to be performed, the smoke must be purified and dedusted, which has high requirements on a smoke sampling system.
In the prior art, a large number of flue gas sampling technologies exist, but the technologies for sampling and monitoring the high-temperature and high-dust flue gas are not more, and the technologies for cooling, purifying and sampling the high-temperature and high-dust flue gas are fewer. The current temperature reduction purification sampling technology for the high-temperature high-dust flue gas also has the following phenomena: the dust removal and cooling effects on the flue gas are poor, and the dust removal and cooling device cannot be applied to high-dust flue gas with the temperature exceeding 1000 ℃.
Disclosure of Invention
The invention mainly aims to provide a device for sampling and monitoring high-temperature and high-dust smoke, which aims to provide sampling smoke after cooling and purifying treatment for sampling and monitoring the high-temperature and high-dust smoke.
In order to achieve the above object, the present invention provides a device for sampling and monitoring high-temperature and high-dust flue gas, comprising: the device comprises a sampling probe assembly, a sampling tube assembly, a monitoring system and a power assembly, wherein one end of the sampling probe assembly stretches into a smoke pipeline to extract smoke, and the other end of the sampling probe assembly is connected with one end of the sampling tube assembly; the sampling tube assembly is connected with the sampling probe assembly and the monitoring system; the power assembly is connected in parallel to the outlet section of the monitoring system so as to drive the sampling smoke to flow, wherein the sampling probe assembly is used for extracting the smoke, and the smoke is provided for the sampling tube assembly after being subjected to primary cooling and purification; the sampling tube assembly is used for conveying the sampled flue gas to the monitoring system after the sampled flue gas is subjected to secondary cooling and purification; the monitoring system is used for monitoring the transmitted sampling smoke in real time.
Preferably, the sampling probe assembly comprises a high-temperature sampling tube, a refrigerating unit and a sampling probe, wherein an air inlet of the high-temperature sampling tube extends into the flue gas pipeline, an air outlet of the high-temperature sampling tube is connected with a hot air inlet of the refrigerating unit, a cold air outlet of the refrigerating unit is connected with a sampling end of the sampling probe, and a sampling end of the sampling probe is connected with one end of the sampling tube assembly.
Preferably, the refrigeration unit is a cyclone cold trap device, the cyclone cold trap device comprises a vortex coil, an outer sleeve and a control valve, a hot gas inlet of the vortex coil is communicated with a gas outlet of the high-temperature sampling tube, a cold gas outlet of the vortex coil is communicated with a sampling end of the sampling probe, the outer sleeve is provided with three opening sections, a first opening section of the outer sleeve transversely surrounds the high-temperature sampling tube to form a jacket tube structure, a lower opening of the first opening section extends to the flue gas pipeline and is communicated with an inner cavity of the flue gas pipeline, and an upper opening of the first opening section is communicated with a lower opening of a second opening section of the outer sleeve; the second opening section of the outer sleeve transversely surrounds the vortex coil pipe to form a sleeve clamping structure, and the upper opening of the second opening section extends to a position flush with the cold air outlet of the vortex coil pipe and is in sealing connection with the sampling end of the sampling probe; the third opening section of the outer sleeve is transversely arranged on the pipe wall close to the upper opening of the second opening section, and an extension part extends outwards along the transverse direction; the control valve is provided in the extension to control the supply of the cryogenic compressed gas.
Preferably, the high temperature sampling tube is made of corundum material.
Preferably, the sampling probe is provided with a particle filter, and a filter element of the material sub-filter adopts a high-temperature resistant silicon carbide filter element.
Preferably, the sampling tube assembly comprises a sampling tube, a sampling control valve, a filtering pressure reducing valve and a filter, wherein the sampling tube is connected with the sampling probe and the monitoring system, and the sampling control valve, the filtering pressure reducing valve and the filter are sequentially arranged on the sampling tube along the connection direction.
Preferably, the sampling tube adopts a radiating tube.
Preferably, the power assembly comprises a jet pump, a jet control valve, a jet pressure reducing valve and a power pipeline, wherein the power pipeline is connected with the outlet section of the monitoring system in parallel, and the jet pump, the jet control valve and the jet pressure reducing valve are sequentially arranged from the parallel connection part of the power pipeline and the monitoring system to the outlet/inlet of the power pipeline.
Preferably, the back-blowing control box comprises an inner back-blowing pipe, an outer back-blowing pipe and a back-blowing gas pipeline, and the inner back-blowing pipe and the outer back-blowing pipe are connected in parallel; one end of the inner back-blowing pipe is connected with the sampling pipe, and the other end of the inner back-blowing pipe is connected with the back-blowing gas pipeline; one end of the external blowback pipe is connected with the blowback port, and the other end of the external blowback pipe is communicated with the blowback gas pipeline, wherein the blowback gas pipeline is used for providing purge gas.
Preferably, the blowback control box further includes: the internal back-flushing control valve is arranged on the internal back-flushing pipe to control the flow of the purge gas in the internal back-flushing pipe; the external back-blowing control valve is arranged on the external back-blowing pipe to control the flow of the purge gas in the external back-blowing pipe; the purging pressure reducing valve is arranged on a connecting section of the inner back-blowing pipe, the outer back-blowing pipe and the back-blowing gas pipeline, so as to control the gas flow pressure of purging gas in the back-blowing gas pipeline.
According to the technical scheme, the sampling probe assembly and the sampling tube assembly are used for carrying out secondary cooling and purifying treatment on the high-temperature and high-dust flue gas, so that the high-purity sampling flue gas is conveyed to a monitoring system, and the accuracy of monitoring analysis is improved. The device has the advantages of simple structure, energy conservation, environmental protection, safe and reliable operation, and provides a real-time monitoring device capable of cooling and purifying for sampling and monitoring the high-temperature and high-dust flue gas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of a device for sampling and monitoring high temperature and high dust flue gas;
FIG. 2 is a schematic cross-sectional view of the spin-air trap apparatus of FIG. 1;
FIG. 3 is a schematic view of another embodiment of the apparatus for sampling and monitoring high temperature and high dust smoke,
reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Sampling probe assembly | 20 | Sampling tube assembly |
| 30 | Monitoring system | 11 | High-temperature sampling tube |
| 12 | Refrigerating unit | 13 | Sampling probe |
| 12 | Cyclone cooling trap device | 121 | Vortex coil pipe |
| 122 | Outer sleeve | 123 | Control valve |
| 1221 | A first opening section | 1222 | A second opening section |
| 1223 | A third opening section | 21 | Sampling tube |
| 22 | Sampling control valve | 23 | Filtering pressure reducing valve |
| 24 | Filter device | 40 | Power assembly |
| 41 | Jet pump | 42 | Jet control valve |
| 43 | Jet flow pressure reducing valve | 44 | Power pipeline |
| 50 | Back-flushing control box | 51 | Inner back-flushing pipe |
| 52 | External back-flushing pipe | 53 | Blowback gas pipeline |
| 54 | Internal back flushing control valve | 55 | External back-blowing controlValve making |
| 56 | Purging pressure reducing valve | 57 | Reverse blowing port |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, 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 invention, 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 invention.
The invention provides a device for sampling and monitoring high-temperature and high-dust smoke, and aims to provide sampling smoke after cooling and purifying treatment for sampling and monitoring high-temperature and high-dust smoke.
As shown in fig. 1, the present invention provides a device for sampling and monitoring high-temperature and high-dust flue gas, which comprises: the device comprises a sampling probe assembly 10, a sampling tube assembly 20, a monitoring system 30 and a power assembly 40, wherein one end of the sampling probe assembly 10 extends into a smoke pipeline to extract smoke, and the other end of the sampling probe assembly is connected with one end of the sampling tube assembly 20; the other end of the sampling tube assembly 20 is connected with the monitoring system 30, and the power assembly 40 is connected in parallel with the outlet section of the monitoring system 30 to drive the sampled smoke to flow, wherein the sampling probe assembly 10 is used for extracting the smoke, cooling and purifying the smoke once, and providing the smoke to the sampling tube assembly 20; the sampling tube assembly 20 is used for conveying the sampled flue gas to the monitoring system 30 after the sampled flue gas is subjected to secondary cooling and purification; the monitoring system 30 is used for monitoring the transmitted sampled smoke in real time.
In this embodiment, the power assembly 40 is used to drive the sampling probe assembly 10 to extract the sampled flue gas from the flue gas pipe, and then the sampled flue gas flows to the monitoring system 30 through the sampling pipe assembly 20 for real-time monitoring. Here, the sampling probe assembly 10 is not only used for detecting sampling smoke, but also for performing first cooling purification on high-temperature and high-dust smoke; the sampling tube assembly 20 is not only used for conveying sampled smoke, but also for carrying out secondary cooling purification on sampled high-temperature and high-dust smoke. It should be understood that the term "secondary" as used herein shall be taken to mean that the high temperature and high dust flue gas is subjected to a plurality of cooling and purifying treatments throughout the path of the sampled flue gas to the monitoring system 30, and is not limited to a specific "secondary". It should be noted that the monitoring system 30 should be understood in a broad sense to refer broadly to a device capable of performing a series of monitoring on sampled smoke, and is not limited to: a measuring range calibration device, a flowmeter and a gas analysis chamber. The power assembly 40 is disposed at the outlet section of the monitoring system 30 and connected in parallel to provide sufficient driving force to drive the sampled flue gas to flow, thereby assisting in real-time monitoring of the sampled flue gas. The device has the advantages of simple structure, energy conservation, environmental protection, safe and reliable operation, and provides a real-time monitoring device for sampling and monitoring the high-temperature and high-dust flue gas.
Further, the sampling probe assembly 10 includes a high temperature sampling tube 11, a refrigerating unit 12 and a sampling probe 13, the air inlet of the high temperature sampling tube 11 extends into the flue gas pipeline, the air outlet of the high temperature sampling tube 11 is connected with the hot air inlet of the refrigerating unit 12, the cold air outlet of the refrigerating unit 12 is connected with the sampling end of the sampling probe 13, and the sampling end of the sampling probe 13 is connected with one end of the sampling tube assembly 20.
In this embodiment, the structure of the sampling probe assembly 10 in an embodiment is specifically described, under the driving of the power assembly 40, the sampling flue gas is extracted from the flue gas pipeline and enters the high-temperature sampling tube 11, and after the temperature is reduced by the high-temperature sampling tube 11 flowing to the refrigerating unit 12, the sampling flue gas flows into the sampling end of the sampling probe 13, flows out from the sampling end of the sampling probe, and the first cooling and purifying of the sampling flue gas by the sampling probe assembly 10 are completed. The high-temperature sampling tube 11 stretches into a flue gas pipeline to be sampled, an air inlet port of the high-temperature sampling tube 11 stretching into the flue gas pipeline is provided with an air inlet bevel, and the inclined surface of the air inlet bevel faces the opposite direction of flue gas flow so as to facilitate sampling; the refrigerating unit 12 is connected with the air outlet of the high-temperature sampling tube 11 and is used for carrying out first cooling on the sampled high-temperature and high-dust flue gas; the sampling probe 13 is connected with the cold air outlet of the refrigerating unit 12, and the sampling flue gas after the first cooling is purified for the first time and then is sent to one end of the sampling tube assembly 20 connected with the sampling probe.
Referring to fig. 2, further, in this embodiment, the refrigeration unit 12 employs a cyclone cooling trap device 12, the cyclone cooling trap device 12 includes a vortex coil 121, an outer sleeve 122, and a control valve 123, a hot gas inlet of the vortex coil 121 is communicated with a gas outlet of the high temperature sampling tube 11, a cold gas outlet of the vortex coil 121 is communicated with a sampling end of the sampling probe 13, the outer sleeve 122 is provided with three opening sections, a first opening section 1221 of the outer sleeve 122 transversely surrounds the high temperature sampling tube 11 to form a jacket tube structure, a lower opening of the first opening section 1221 extends to the flue gas pipe and is communicated with an inner cavity of the flue gas pipe, and an upper opening of the first opening section 1221 is communicated with a lower opening of a second opening section 1222 of the outer sleeve 122; a second opening section 1222 of the outer sleeve 122 transversely surrounds the vortex coil 121 to form a jacket tube structure, and an upper opening of the opening section extends to a position flush with a cold air outlet of the vortex coil 121 and is in sealing connection with a sampling end of the sampling probe 13; the third opening 1223 of the outer sleeve 122 is transversely disposed on the tube wall near the upper opening of the second opening 1222, and extends out an extension part along the transverse direction; a control valve 123 is provided in the extension to control the supply of the cryogenic compressed gas.
In this embodiment, the structure of the refrigeration unit 12 is specifically described, the refrigeration unit 12 adopts a jacketed cyclone cold trap device, the temperature of the high-temperature sampling smoke can be reduced to below 300 ℃ through the structure of the cyclone cold trap device, and the principle of cyclone cold trap refrigeration is as follows: compressed gas is injected into the second opening section 1222 of the outer sleeve 122 along the tangential direction of the outer wall of the vortex coil pipe through the third opening 1223 section of the outer sleeve 122 to form free vortex, and flows through the lower opening of the second opening section 1222 of the outer sleeve 122 along the outer wall of the vortex coil pipe 121 in the second opening section 1222 of the outer sleeve 122, and flows into the flue gas pipeline from the lower opening of the first opening section 1221 of the outer sleeve 122 through the upper opening of the first opening section 1221 communicated with the second opening section 1222 of the outer sleeve 122. In this process, because the rotational angular velocity of the free vortex is different, friction is generated between the layers of the free vortex, and as a result, energy is transferred to the air flow with lower angular velocity in the outer layer portion, the temperature of the air flow in the outer layer portion increases, the air flow in the central layer portion loses energy, the temperature decreases, meanwhile, the air flow in the central layer portion continuously absorbs the heat of the high-temperature sampling smoke in the vortex coil 121 from the wall of the vortex coil 121 and transfers the heat to the air flow in the outer layer portion, the high-temperature air flow in the vortex coil 121 exchanges heat with the low-temperature air flow in the central layer portion, the high-temperature air in the vortex coil 121 is rapidly cooled, and flows out from the cool air outlet of the vortex coil 121. And the temperature of the airflow at the outer layer part of the vortex is increased to form hot airflow which flows out of the flue gas pipeline. Although the temperature of the air flow flowing out of the flue gas pipeline after heat exchange is improved, compared with the temperature of the flue gas in the flue gas pipeline, the air flow is relatively low-temperature air flow, so that the low-temperature compressed air flow flowing out of the flue gas pipeline further exchanges heat with the sampled flue gas of the flue gas pipeline, and the initial cooling of the sampled flue gas is completed.
It should be noted that, when the supplied low-temperature compressed gas flows out of the flue gas pipeline, the pressure a will be generated for the high-temperature sampling pipe 11, and when the sampled flue gas is extracted from the flue gas pipeline with a certain airflow velocity, the pressure B will be generated for the high-temperature sampling pipe 11, in order to balance the pressure difference between the pressure a and the pressure B, a control valve is arranged in a position where the third opening 1223 section extends outwards, and by controlling the supply of the low-temperature compressed gas, the pressure difference between the pressure a and the pressure B is balanced, so that the scouring of the flue gas in the flue gas pipeline to the high-temperature sampling pipe 11 is slowed down, and the service life of the high-temperature sampling pipe 11 is prolonged.
Further, the high temperature sampling tube 11 is made of corundum material.
In this embodiment, in order to further reduce the erosion of the high temperature sampling tube 11 by the flue gas in the flue gas pipe, the high temperature sampling tube 11 is made of corundum material, so that the erosion of the high temperature sampling tube 11 by the flue gas is effectively resisted.
Further, a particle filter is disposed in the sampling probe 13, and a filter core of the particle filter adopts a high temperature resistant silicon carbide filter core.
In this embodiment, the sampling probe 13 is of an integrated design, and includes a protective cover type housing, a temperature control element disposed in an inner cavity of the protective cover type housing, a sampling tube extending into the inner cavity of the protective cover type housing, and a particle filter connected to the sampling tube, where the particle filter extends longitudinally to an output port of the protective cover type housing. The flow channel of the sampling smoke in the sampling probe is as follows: under the action of the power component, sampling smoke flows into the sampling end of the sampling tube from the vortex coil pipe, then enters the inner cavity of the protective cover type shell from the sampling tube, and flows out from the output port of the protective cover type shell through the particle filter. Therefore, the sampling end of the sampling tube is the sampling end of the sampling probe, and the output port of the protective cover type shell is the sampling end of the sampling probe; the temperature control piece is arranged in the inner cavity of the shell, the specific position of the temperature control piece is not limited, and the temperature control piece is in the conventional configuration of the sampling probe so as to ensure that the water vapor in the sampled smoke is not condensed into a liquid state, and effectively prevent the filter hole of the particle filter element from being blocked; the filter element of the particle filter adopts a high-temperature resistant silicon carbide filter element, the precision of the filter element is less than or equal to 2 mu m, liquid or solid particles below 2 mu m in sampled smoke can be filtered out of the filter element, and the protective cover type shell effectively gathers the filtered particles in the cavity of the protective cover type shell; the silicon carbide filter core is high in temperature resistance, sulfur resistance and corrosion resistance, high in filtration permeability, small in resistance to sampling smoke and strong in pressure bearing capacity.
Further, the sampling tube assembly 20 includes a sampling tube 21, a sampling control valve 22, a filter pressure reducing valve 23 and a filter 24, the sampling tube 21 connects the sampling probe 13 and the monitoring system 30, and the sampling control valve 22, the filter pressure reducing valve 23 and the filter 24 are sequentially disposed on the sampling tube 21 along the connection direction.
Further, the sampling tube 21 is a radiating tube.
In this embodiment, the sampling tube assembly 20 is not only a bridge connecting the sampling probe assembly 10 and the monitoring system 30, but also performs secondary cooling and purification on the high-temperature and high-dust sampling flue gas. The sampling tube assembly 20 controls the supply of sampling smoke through the sampling control valve 22, cools the sampling smoke through the heat dissipation characteristic of the sampling tube 21, and filters the sampling smoke through the cooperation of the filtering pressure reducing valve 23 and the filter 24. The sampling tube 21 adopts a radiating tube, which is not limited to the following three types: steel pipes, stainless steel pipes and copper pipes, in this example stainless pipes with a thickness of 8mm are used. Through tests, even if the section of stainless steel pipe is exposed in the air, the temperature of the sampled flue gas can be further reduced to below 50 ℃ or normal temperature. The filter 24 adopts a precise filter 24, the filter element precision of the filter 24 is less than or equal to 1 mu m, fine dust can be further filtered, and the purity of sampled smoke is ensured.
Referring to fig. 1 or 3, further, the power assembly 40 includes a jet pump 41, a jet control valve 42, a jet pressure reducing valve 43, and a power pipe 44, the power pipe 44 is connected in parallel to the outlet section of the monitoring system 30, and the jet pump 41, the jet control valve 42, and the jet pressure reducing valve 43 are sequentially disposed from the parallel connection of the power pipe 44 and the monitoring system 30 to the outlet/inlet of the power pipe 44.
In the present embodiment, in order to provide a sufficient driving force for the sampled flue gas, the jet pump 41 is turned on by the jet control valve 42, the sampled flue gas is pumped out to the output port of the monitoring system 30 by using the super-strong pumping capability of the jet pump 41, then compressed air is introduced into the power pipeline 44 as driving gas, and the pumped sampled flue gas is discharged, and the jet pressure reducing valve 43 is used for balancing the pressure between the compressed air and the sampled flue gas, so as to improve the service life of the power assembly 40.
In another preferred embodiment of the present invention, the present invention further provides a second device for sampling and monitoring high temperature and high dust, which includes the blowback control box 50 and the blowback port 57 provided at the output end of the protective cover type housing, besides the above device for sampling and monitoring high temperature and high dust, and the specific structure of the device for sampling and monitoring high temperature and high dust refers to the above embodiment. Wherein, the blowback control box 50 is an integrated box body and comprises an inner blowback pipe 51, an outer blowback pipe 52 and a blowback gas pipeline 53, wherein the inner blowback pipe 51 and the outer blowback pipe 52 are connected in parallel; one end of the inner blowback pipe 51 is connected with the sampling pipe 21, and the other end thereof is connected with the blowback gas pipeline 53; one end of the external blowback pipe 52 is connected to the blowback port 57, and the other end thereof is communicated with the blowback gas pipe 53, wherein the blowback gas pipe 53 is used for supplying purge gas.
In another preferred embodiment of the present invention, the purge of the sampling probe 13 from inside to outside is accomplished by adding a blowback control box 50. Specifically, the blowback control box 50 provides purge gas to the inner blowback pipe 51 through a blowback gas pipeline 53, so that the sampling smoke particles of the particle filter staying in the filter element are purged out of the filter element and are collected in the inner cavity of the protective cover type shell; the blowback control box 50 provides purge gas to the external blowback pipe 52 through a blowback gas pipeline 53, so as to blow out filtered particles in the inner cavity of the protective cover type shell along the reverse direction of the flow direction of the sampling smoke, and finally blow into the smoke pipeline. The blowback gas pipeline 44 is provided with a purge pressure reducing valve 56, and the purge pressure reducing valve 56 controls the purge strength of the inner blowback pipe 51 and/or the outer blowback pipe 52 by controlling the purge gas pressure. It should be noted that, in this embodiment, one end of the sampling tube 21 is connected to a connection point of the horizontal section and a connection point of the second vertical section of the inner blowback tube 51, and the other end thereof is connected to the monitoring system 30.
Further, the blowback control box further includes: an inner blowback control valve 54, an outer blowback control valve 55, and a purge relief valve 56, the inner blowback control valve 54 being provided on the inner blowback pipe 51 to control the flow rate of the purge gas in the inner blowback pipe 51; the external blowback control valve 55 is provided on the external blowback pipe 52 to control the flow rate of the purge gas in the external blowback pipe 52; the purge relief valve 56 is provided on the connection section of the parallel connection node of the inner blowback pipe 51 and the outer blowback pipe 52 and the blowback gas pipe 53 to control the flow pressure of the purge gas in the blowback gas pipe 53.
In the present embodiment, purging of the sampling probe 13 is achieved by the intermittent operation of the inner blowback control valve 54, the outer blowback control valve 55, and the purge relief valve 56. The actual operation of the interval operation is as follows: when purging is needed, the purging pressure reducing valve 56 is opened firstly, then the inner back-flushing control valve 54 is opened for purging, after purging for a certain time, the purging pressure reducing valve is closed, then the outer back-flushing control valve 55 is opened for purging, after purging for a certain time, the purging task is completed.
The device of the invention is adopted to sample and monitor the sampling smoke as a better experimental result: at least the gas with normal temperature and high purity can be obtained; from the site use condition, the device can be used for controlling the temperature of 1400 ℃ and 80-200 g/nm 3 And (3) sampling and monitoring the high-temperature and high-dust flue gas.
According to the technical scheme, the sampling probe assembly 10 is used for carrying out primary cooling purification on the sampled smoke; the sampling tube assembly 20 is used for carrying out secondary cooling purification on the sampled smoke, and the sampled smoke after cooling purification is provided for the monitoring system 30 for monitoring.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
1. The utility model provides a device of flue gas sampling monitoring of high temperature high dust which characterized in that includes: the device comprises a sampling probe assembly, a sampling tube assembly, a monitoring system and a power assembly, wherein one end of the sampling probe assembly stretches into a smoke pipeline to extract smoke, and the other end of the sampling probe assembly is connected with one end of the sampling tube assembly; the sampling tube assembly is connected with the sampling probe assembly and the monitoring system; the power assembly is connected in parallel to the outlet section of the monitoring system so as to drive the sampling smoke to flow, wherein the sampling probe assembly is used for extracting the smoke, and the smoke is provided for the sampling tube assembly after being subjected to primary cooling and purification; the sampling tube assembly is used for conveying the sampled flue gas to the monitoring system after the sampled flue gas is subjected to secondary cooling and purification; the monitoring system is used for monitoring the transmitted sampling smoke in real time;
the sampling probe assembly comprises a high-temperature sampling tube, a refrigerating unit and a sampling probe, wherein an air inlet of the high-temperature sampling tube extends into a flue gas pipeline, an air outlet of the high-temperature sampling tube is connected with a hot air inlet of the refrigerating unit, a cold air outlet of the refrigerating unit is connected with a sampling end of the sampling probe, and a sampling end of the sampling probe is connected with one end of the sampling tube assembly;
the sampling tube assembly comprises a sampling tube, a sampling control valve, a filtering pressure reducing valve and a filter, wherein the sampling tube is connected with the sampling probe and the monitoring system, and the sampling control valve, the filtering pressure reducing valve and the filter are sequentially arranged on the sampling tube along the connection direction;
the sampling tube adopts a radiating tube.
2. The device for sampling and monitoring high-temperature and high-dust smoke as set forth in claim 1, wherein the refrigerating unit is a cyclone cold trap device, the cyclone cold trap device comprises a vortex coil, an outer sleeve and a control valve, a hot gas inlet of the vortex coil is communicated with a gas outlet of the high-temperature sampling tube, a cold gas outlet of the vortex coil is communicated with a sampling end of the sampling probe, the outer sleeve is provided with three opening sections, a first opening section of the outer sleeve transversely surrounds the high-temperature sampling tube to form a jacket tube structure, a lower opening of the first opening section extends to a smoke pipeline and is communicated with an inner cavity of the smoke pipeline, and an upper opening of the first opening section is communicated with a lower opening of a second opening section of the outer sleeve; the second opening section of the outer sleeve transversely surrounds the vortex coil pipe to form a sleeve clamping structure, and the upper opening of the second opening section extends to a position flush with the cold air outlet of the vortex coil pipe and is in sealing connection with the sampling end of the sampling probe; the third opening section of the outer sleeve is transversely arranged on the pipe wall close to the upper opening of the second opening section, and an extension part extends outwards along the transverse direction; the control valve is provided in the extension to control the supply of the cryogenic compressed gas.
3. The apparatus for sampling and monitoring high temperature and high dust flue gas according to claim 1, wherein the high temperature sampling tube is made of corundum material.
4. The apparatus for sampling and monitoring high temperature and high dust flue gas according to claim 1, wherein the sampling probe is provided with a particle filter, and a filter element of the particle filter adopts a high temperature resistant silicon carbide filter element.
5. The device for sampling and monitoring high-temperature and high-dust smoke according to claim 1, wherein the power assembly comprises a jet pump, a jet control valve, a jet pressure reducing valve and a power pipeline, the power pipeline is connected with an outlet section of the monitoring system in parallel, and the jet pump, the jet control valve and the jet pressure reducing valve are sequentially arranged from the parallel connection position of the power pipeline and the monitoring system to the outlet/inlet of the power pipeline.
6. The device for sampling and monitoring high-temperature and high-dust smoke according to any one of claims 1 to 5, further comprising a back-blowing control box and a back-blowing port arranged at the output end of the protective cover type shell, wherein the back-blowing control box comprises an inner back-blowing pipe, an outer back-blowing pipe and a back-blowing gas pipeline, and the inner back-blowing pipe and the outer back-blowing pipe are connected in parallel; one end of the inner back-blowing pipe is connected with the sampling pipe, and the other end of the inner back-blowing pipe is connected with the back-blowing gas pipeline; one end of the external blowback pipe is connected with the blowback port, and the other end of the external blowback pipe is communicated with the blowback gas pipeline, wherein the blowback gas pipeline is used for providing purge gas.
7. The apparatus for sampling and monitoring high temperature and high dust flue gas according to claim 6, wherein the blowback control box further comprises: the internal back-flushing control valve is arranged on the internal back-flushing pipe to control the flow of the purge gas in the internal back-flushing pipe; the external back-blowing control valve is arranged on the external back-blowing pipe to control the flow of the purge gas in the external back-blowing pipe; the purging pressure reducing valve is arranged on the joint parallel connection point of the inner back-blowing pipe and the outer back-blowing pipe and the connecting section of the back-blowing gas pipeline so as to control the gas flow pressure of purging gas in the back-blowing gas pipeline.
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| CN106969951B (en) * | 2017-05-11 | 2024-01-26 | 邯郸学院 | Anti-blocking dehumidifying sampling equipment in continuous automatic flue gas monitoring system |
| CN107389865B (en) * | 2017-07-19 | 2023-12-12 | 苏州曼德克光电有限公司 | Smoke and dust and smoke flow field simulator in flue |
| CN108760407B (en) * | 2018-05-25 | 2023-06-23 | 安徽工业大学 | Heat pipe phase-change heat exchange constant temperature sampling gun |
| CN108548701A (en) * | 2018-06-12 | 2018-09-18 | 北京首仪华强电子设备有限公司 | A kind of device for taking gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5413001A (en) * | 1992-07-21 | 1995-05-09 | Fls Automation A/S | Method and apparatus for sampling gas from a hot dust-filled gas stream |
| CN102507269A (en) * | 2011-10-29 | 2012-06-20 | 重庆川仪分析仪器有限公司 | Maintenance-free high-temperature gas sampling probe |
| CN203011744U (en) * | 2012-11-20 | 2013-06-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Online cooling sampling device of zirconium oxide analyzer |
| CN203443939U (en) * | 2013-09-12 | 2014-02-19 | 苏州威阳环保科技有限公司 | Sampling and analyzing device for volatile organic materials in air |
| CN206450479U (en) * | 2016-12-20 | 2017-08-29 | 北京光科博冶科技有限责任公司 | A kind of device of the smoke sampling monitoring of high temperature with high dust |
-
2016
- 2016-12-20 CN CN201611195211.0A patent/CN106501034B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5413001A (en) * | 1992-07-21 | 1995-05-09 | Fls Automation A/S | Method and apparatus for sampling gas from a hot dust-filled gas stream |
| CN102507269A (en) * | 2011-10-29 | 2012-06-20 | 重庆川仪分析仪器有限公司 | Maintenance-free high-temperature gas sampling probe |
| CN203011744U (en) * | 2012-11-20 | 2013-06-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Online cooling sampling device of zirconium oxide analyzer |
| CN203443939U (en) * | 2013-09-12 | 2014-02-19 | 苏州威阳环保科技有限公司 | Sampling and analyzing device for volatile organic materials in air |
| CN206450479U (en) * | 2016-12-20 | 2017-08-29 | 北京光科博冶科技有限责任公司 | A kind of device of the smoke sampling monitoring of high temperature with high dust |
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