CN209857956U - Continuous emission monitoring system of flue gas - Google Patents
Continuous emission monitoring system of flue gas Download PDFInfo
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- CN209857956U CN209857956U CN201920756606.6U CN201920756606U CN209857956U CN 209857956 U CN209857956 U CN 209857956U CN 201920756606 U CN201920756606 U CN 201920756606U CN 209857956 U CN209857956 U CN 209857956U
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Abstract
The utility model discloses a continuous emission monitoring system of flue gas, which comprises a sampling probe, a dust meter, a temperature and pressure flow detector, a hygrometer, an air compressor and an analysis cabinet, wherein one end of the sampling probe is communicated with the analysis cabinet through a heat tracing pipeline, the temperature and pressure flow detector and the hygrometer are connected with the analysis cabinet through the heat tracing pipeline, the hygrometer is arranged in the analysis cabinet, one end of the air compressor is connected with the sampling probe and the temperature and pressure flow detector through the heat tracing pipeline, an air chamber of the analysis cabinet is made of stainless steel, the gas chamber is strong and low in cost, the influence of moisture and dust is small, the detector and the gas chamber are connected through optical fibers, the replacement is convenient, the maintenance cost is low, the temperature and pressure flow detector adopts an integrated cabinet, a high-precision micro differential pressure transmitter (low detection lower limit) is automatically zeroed, automatic back flushing, back flushing protection, data uploading, display and the like.
Description
Technical Field
The utility model belongs to the technical field of the fume emission monitoring, specifically be a continuous emission of flue gas monitoring system.
Background
The device for continuously monitoring the concentration and the total emission amount of gaseous pollutants and particulate matters emitted by an atmospheric pollution source and transmitting information to a competent department in real time by the smoke emission continuous monitoring system is called as an 'automatic smoke monitoring system', and can continuously and real-timely track and test the concentration and the emission rate of the particulate matters and the gaseous pollutants in smoke emitted by a fixed pollution source (such as a boiler, a brickyard, an industrial furnace, an incinerator and the like).
However, the currently used smoke emission detection systems have some disadvantages in use, such as: the existing flue gas emission monitoring system is complex in structure, difficult to operate and maintain, poor in stability, high in operation cost and limited to a certain extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the problems of complex structure, difficult operation and maintenance, poor stability and high operation cost of the existing flue gas emission monitoring system, the flue gas continuous emission monitoring system is provided.
The utility model adopts the technical scheme as follows: a continuous emission monitoring system for flue gas comprises a sampling probe, a dust meter, a temperature and pressure flow detector, a humidity meter, an air compressor and an analysis cabinet, wherein one end of the sampling probe is communicated with the analysis cabinet through a heat tracing pipeline, the temperature and pressure flow detector and the humidity meter are both connected with the analysis cabinet through heat tracing pipelines, the humidity meter is arranged in the analysis cabinet, one end of the air compressor is connected with the sampling probe and the temperature and pressure flow detector through heat tracing pipelines, a nitrogen oxide converter is fixedly connected to the bottom of the inside of the analysis cabinet, a standard gas flowmeter is arranged at the center of the inside of the analysis cabinet, an industrial personal computer is fixedly connected to the bottom of the inside of the analysis cabinet, a flue gas analyzer is arranged in the analysis cabinet, and one end of the flue gas analyzer is connected with a standard gas.
The structure of the sampling probe is an electric heating probe, and a ceramic or stainless steel filter element is arranged in the sampling probe.
The internal structure of the temperature and pressure flow detector mainly comprises a micro differential pressure transmitter, a static pressure sensor, a thermal resistor, a pitot tube, a control unit, a back flushing unit, a display unit, a data transmission unit and the like.
The hygrograph adopts a ceramic humidity sensing technology, and the high temperature resistance of the hygrograph is 0-650 ℃.
The dust meter is based on the back scattering principle of smoke particles, and carries out online continuous measurement on the particle pollutants of the fixed pollution source.
The light source of the flue gas analyzer adopts a pulse xenon lamp, the detector of the flue gas analyzer is connected with the gas chamber optical fiber, and the flue gas analyzer adopts an ultraviolet absorption spectrum gas analysis technology and a chemometrics algorithm.
The heat tracing sampling composite pipe is formed by parallelly laying a special self-temperature-limiting electric heating belt and various electric wires by a corrosion-resistant high-performance fluororesin guide pipe, additionally arranging a special glass fiber heat-insulating layer and finally compounding by taking extruded polyethylene or polyvinyl chloride as a protective jacket.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses in, the gaseous room of analysis appearance is formed by the stainless steel processing, and the gaseous room is strong, with low costs, receives the influence of moisture, dust little, and the detector adopts fiber connection with the gaseous room, and it is convenient to change, and the maintenance cost is low, and temperature and pressure flow detector adopts the integration rack, and high-accuracy differential pressure transmitter (detecting the lower limit is low), and automatic zero setting, automatic blowback, blowback protection, data upload and function such as show.
2. The utility model discloses in, be electrical heating probe through the structure with sampling probe, and sampling probe's inside is provided with pottery or stainless steel filter core, is responsible for the flue gas sampling through sampling probe, and built-in pottery or stainless steel filter core are arranged in filtering the dust in the flue gas.
3. The utility model discloses in, through the backscattering principle based on the smoke and dust particle to the dust meter adoption, and the dust meter carries out online continuous measurement to fixed pollution source granule pollutant, applicable monitoring requirement in low concentration emission, the monitoring that also is applicable to the high concentration and discharges.
Drawings
FIG. 1 is a schematic structural view of the detection system of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
fig. 3 is the structural schematic diagram of the middle analysis cabinet of the present invention.
The labels in the figure are: 1. sampling a probe; 2. a dust meter; 3. a warm pressure flow detector; 4. a hygrometer; 5. an air compressor; 6. analyzing the cabinet; 7. a standard gas flowmeter; 8. a nitrogen oxide converter; 9. an industrial personal computer; 10. a flue gas analyzer; 11. and (5) marking gas.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, a continuous flue gas emission monitoring system comprises a sampling probe 1, a dust meter 2, a temperature and pressure flow detector 3, a humidity meter 4, an air compressor 5 and an analysis cabinet 6, wherein one end of the sampling probe 1 is communicated with the analysis cabinet 6 through a heat tracing pipeline, the temperature and pressure flow detector 3 and the humidity meter 4 are both connected with the analysis cabinet 6 through a heat tracing pipeline, the humidity meter 4 is arranged inside the analysis cabinet 6, one end of the air compressor 5 is connected with the sampling probe 1 and the temperature and pressure flow detector 3 through heat tracing pipelines, a nitrogen oxide converter 8 is fixedly connected with the bottom inside the analysis cabinet 6, a standard gas flowmeter 7 is arranged at the center inside of the analysis cabinet 6, an industrial personal computer 9 is fixedly connected with the bottom inside of the analysis cabinet 6, a flue gas analyzer 10 is arranged inside the analysis cabinet 6, one end of the flue gas analyzer 10 is connected with a standard gas 11.
Further, the structure of the sampling probe 1 is an electric heating probe, a ceramic or stainless steel filter element is arranged in the sampling probe 1, the sampling probe 1 is used for sampling flue gas, and the ceramic or stainless steel filter element is arranged in the sampling probe and is used for filtering dust in the flue gas.
Furthermore, the internal structure of the temperature and pressure flow detector 3 mainly comprises a micro differential pressure transmitter, a static pressure sensor, a thermal resistor, a pitot tube, a control unit, a back flushing unit, a display unit, a data transmission unit and the like, and can be used for a flue gas emission monitoring system to perform real-time continuous measurement of flue gas temperature, pressure, flow rate and flow.
Furthermore, the hygrograph 4 adopts a ceramic humidity sensing technology, and the high temperature resistance of the hygrograph 4 is 0-650 ℃, so that the long-term on-line accurate measurement of the gas humidity under the high-temperature and high-humidity environment can be effectively ensured; the device has the characteristics of high temperature resistance, high measurement precision, weak acid resistance, strong anti-interference capability, high response speed, stable and reliable performance and the like.
Further, the dust meter 2 is based on the back scattering principle of the smoke particles, and the dust meter 2 can be used for continuously measuring the particle pollutants of the fixed pollution source on line, and is suitable for monitoring the low-concentration emission and the high-concentration emission.
Further, a light source of the flue gas analyzer 10 adopts a pulse xenon lamp, a detector of the flue gas analyzer 10 is connected with a gas chamber optical fiber, and the flue gas analyzer 10 adopts an ultraviolet absorption spectrum gas analysis technology and a chemometrics algorithm.
Furthermore, the sampling probe 1, the dust meter 2, the temperature and pressure flow detector 3, the hygrograph 4, the air compressor 5 and the analysis cabinet 6 are mutually connected by adopting a heat tracing sampling composite pipe, the heat tracing sampling composite pipe is formed by laying a special self-temperature-limiting electric heating belt and various electric wires in parallel by a corrosion-resistant high-performance fluororesin guide pipe, additionally adding a special glass fiber heat-insulating layer and finally compounding by using extruded polyethylene or polyvinyl chloride as a protective jacket.
The working principle is as follows: when the system is used, sample gas enters a sampling probe 1 through a sampling probe rod, and dust in the sample gas is removed after the sample gas is filtered by a ceramic filter element; the sampling probe 1 is heated to 120-150 ℃ by a heater, so that condensed water is prevented from being generated after the sample gas passes through the sampling probe. Sample gas from a sampling probe 1 passes through a high-temperature heat tracing pipeline, is dedusted by a secondary filter, is dewatered by a two-stage condensing system, and then directly enters a measuring gas chamber in a flue gas analyzer 10, the gas chamber is placed in the flue gas analyzer 10 and is connected to an ultraviolet differential analyzer through an ultraviolet optical fiber to realize measurement of the flue gas, and finally the measured flue gas is evacuated through a sampling pump; the condensed water is drained through a drainage system. The control unit realizes the functions of automatic back flushing, automatic calibration, refrigeration temperature alarm prompt and the like, and displays various working states of the system.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a continuous emission monitoring system of flue gas, includes that sampling probe (1), dust appearance (2), warm and pressure flow detector (3), hygrometer (4), air compressor (5) and analysis rack (6) constitute, its characterized in that: one end of the sampling probe (1) is communicated with the analysis cabinet (6) through a heat tracing pipeline, the temperature and pressure flow detector (3) and the hygronom (4) are connected with the analysis cabinet (6) through heat tracing pipelines, the hygrograph (4) is connected with the analysis cabinet (6), one end of the air compressor (5) is connected with the sampling probe (1) and the temperature-pressure flow detector (3) through a heat tracing pipeline, the bottom of the inside of the analysis cabinet (6) is fixedly connected with a nitrogen oxide converter (8), a standard gas flowmeter (7) is arranged at the central part inside the analysis cabinet (6), the inner bottom of the analysis cabinet (6) is fixedly connected with an industrial personal computer (9), a flue gas analyzer (10) is arranged inside the analysis cabinet (6), and one end of the flue gas analyzer (10) is connected with a standard gas (11).
2. The continuous fume emission monitoring system as claimed in claim 1, wherein: the structure of sampling probe (1) is electrical heating probe, the inside of sampling probe (1) is provided with ceramic or stainless steel filter core.
3. The continuous fume emission monitoring system as claimed in claim 1, wherein: the internal structure of the temperature and pressure flow detector (3) mainly comprises a micro differential pressure transmitter, a static pressure sensor, a thermal resistor, a pitot tube, a control unit, a back flushing unit, a display unit, a data transmission unit and the like.
4. The continuous fume emission monitoring system as claimed in claim 1, wherein: the hygrograph (4) adopts a ceramic humidity sensing technology, and the high temperature resistance of the hygrograph (4) is 0-650 ℃.
5. The continuous fume emission monitoring system as claimed in claim 1, wherein: the dust meter (2) is based on the back scattering principle of smoke dust particles, and the dust meter (2) is used for carrying out online continuous measurement on fixed pollution source particle pollutants.
6. The continuous fume emission monitoring system as claimed in claim 1, wherein: the light source of the flue gas analyzer (10) adopts a pulse xenon lamp, the detector of the flue gas analyzer (10) is connected with the gas chamber optical fiber, and the flue gas analyzer (10) adopts an ultraviolet absorption spectrum gas analysis technology and a chemometrics algorithm.
7. The continuous fume emission monitoring system as claimed in claim 1, wherein: the sampling probe (1), the dust meter (2), the temperature and pressure flow detector (3), the humidity meter (4), the air compressor (5) and the analysis cabinet (6) are mutually connected by adopting a heat tracing sampling composite pipe, the heat tracing sampling composite pipe is formed by parallelly laying a special self-temperature-limiting electric heating belt and various electric wires by a corrosion-resistant high-performance fluororesin guide pipe, additionally arranging a special glass fiber heat-insulating layer and finally compounding the special self-temperature-limiting electric heating belt and various electric wires by using extruded polyethylene or polyvinyl chloride as a protective jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756606.6U CN209857956U (en) | 2019-05-24 | 2019-05-24 | Continuous emission monitoring system of flue gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920756606.6U CN209857956U (en) | 2019-05-24 | 2019-05-24 | Continuous emission monitoring system of flue gas |
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| CN209857956U true CN209857956U (en) | 2019-12-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689791A (en) * | 2020-12-26 | 2022-07-01 | 广东伟创科技开发有限公司 | Automatic maintenance device and method applied to continuous flue gas monitoring system |
| CN115475494A (en) * | 2022-08-09 | 2022-12-16 | 华能国际电力江苏能源开发有限公司 | Environment-friendly dust meter for flue gas emission monitoring system |
-
2019
- 2019-05-24 CN CN201920756606.6U patent/CN209857956U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689791A (en) * | 2020-12-26 | 2022-07-01 | 广东伟创科技开发有限公司 | Automatic maintenance device and method applied to continuous flue gas monitoring system |
| CN115475494A (en) * | 2022-08-09 | 2022-12-16 | 华能国际电力江苏能源开发有限公司 | Environment-friendly dust meter for flue gas emission monitoring system |
| CN115475494B (en) * | 2022-08-09 | 2024-01-26 | 华能国际电力江苏能源开发有限公司 | Dust appearance for environmental protection type fume emission monitoring system |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A continuous flue gas emission monitoring system Effective date of registration: 20220316 Granted publication date: 20191227 Pledgee: Jinan Rural Commercial Bank Co.,Ltd. Huaiyin sub branch Pledgor: Shandong Xinze Instrument Co.,Ltd. Registration number: Y2022980002603 |