CN214121926U - Anti-condensation dust meter system - Google Patents
Anti-condensation dust meter system Download PDFInfo
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- CN214121926U CN214121926U CN202022562694.1U CN202022562694U CN214121926U CN 214121926 U CN214121926 U CN 214121926U CN 202022562694 U CN202022562694 U CN 202022562694U CN 214121926 U CN214121926 U CN 214121926U
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- dust meter
- unit
- sampling
- fan
- condensation
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- 239000000428 dust Substances 0.000 title claims abstract description 26
- 238000009833 condensation Methods 0.000 title claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 230000007613 environmental effect Effects 0.000 claims abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003546 flue gas Substances 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 claims description 14
- 238000010790 dilution Methods 0.000 claims description 13
- 239000012895 dilution Substances 0.000 claims description 13
- 239000000779 smoke Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 5
- 238000007865 diluting Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000013618 particulate matter Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 8
- 239000004568 cement Substances 0.000 description 5
- 239000010813 municipal solid waste Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an anti-condensation dust meter system belongs to the environmental monitoring field, can avoid the influence of kiln tail flue gas high humidity, and the emission concentration of the online particulate matter of reaction environmental protection that can be comparatively true satisfies high humidity, the ultralow emission detection requirement of dealing with in coordination in the production technology, and the environmental protection management risk is evaded in accurate production of instructing. The dust meter is installed in the straight section of kiln tail chimney, exports about 30 meters, about the 7 times departments of chimney diameter apart from the tail exhaust fan, and at same hoop position with the monitoring sampling point of environmental protection online device, entire system is monitoring pressure, the temperature in the process pipeline when the sample, and the measurement of assurance system is accurate and stable.
Description
Technical Field
The utility model belongs to the environmental monitoring field especially relates to an anti-condensation dust meter system.
Background
The method for utilizing the cement kiln to dispose the municipal solid waste in coordination in the cement production process accords with the concept of sustainable development and is an effective way for improving the traditional cement industry. The cement kiln is utilized for coprocessing and coprocessing for coprocessing urban domestic garbage, sludge, hazardous waste and the like, the humidity of kiln tail flue gas is basically about 17 percent in the disposal process, even exceeds 20 percent, and the inner wall of a kiln tail chimney always flows downwards. Under the condition that the environmental temperature is lower in winter and spring, the condition is more obvious, the kiln tail chimney is just like a downy rain, so that the dew condensation is formed on the mirror surface of the environment-friendly online dust meter at the kiln tail, the misjudgment is caused by laser detection, the water mist in the smoke is regarded as dust, and the smoke emission data is distorted and exceeds the standard. Through observation and analysis, the instrument is not suitable for the current high-humidity and low-concentration discharge working conditions of the municipal solid waste production process by using a cement kiln for cooperative disposal, has environmental protection management risks, and must be developed for equipment technical innovation as soon as possible.
Disclosure of Invention
The utility model provides an anti-condensation dust meter system can avoid the influence of kiln tail flue gas high humidity, and the emission concentration of the online particulate matter of reaction environmental protection that can be comparatively true satisfies high humidity, the ultralow emission detection requirement of handling in coordination in the production technology, and the environmental protection management risk is evaded in accurate production of instructing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an anti-condensation dust meter system, the dust meter is installed in the straight section of kiln tail chimney, and is about 30 meters, about 7 times department of chimney diameter apart from the export of tail exhaust fan, the dust meter is in same hoop position with environmental protection on-line device monitoring sampling point.
The dust meter comprises a sampling measurement unit, a control unit, a purging unit, a sample gas dilution device, a jet fan and a dilution fan; the sampling measurement unit is connected and installed on the wall of the measuring point flue; the control unit and the blowing unit are arranged on an installation platform beside the sampling measurement unit, and the distance between the control unit and the blowing unit is 3.0 meters; and the dilution fan blows the heated external gas to the front end of the probe rod, the jet flow fan emits negative pressure generated by airflow at the exhaust outlet, the dilution gas and the sample gas are mixed and heated into dry flue gas, the dry flue gas is sucked into the measurement unit, and the measured smoke concentration is obtained through conversion of the dilution ratio. The whole system monitors the pressure and the temperature in the process pipeline while sampling, and the measurement accuracy and the stability of the system are ensured.
Has the advantages that: the utility model provides an anti-condensation dust meter system, the dust meter that adopts is through the smoke and dust appearance of ultralow emission 0-10mg/m environmental protection authentication, adopt the extraction, dilute, dry, the mode that detects the particulate matter in the flue gas, the influence of high humidity has been avoided, can be comparatively real emission concentration of the online particulate matter of reflection environmental protection, can satisfy the high humidity in the cooperation department, the ultralow emission detection requirement, can be comparatively real emission concentration of the online particulate matter of reflection environmental protection.
Drawings
Fig. 1 is a schematic view of the system in the embodiment of the present invention, in which 1 is a heat insulating layer, 2 is a flue wall, 3 is a dust meter, and 4 is an operation platform;
fig. 2 is the connection schematic diagram of the dust meter in the embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments:
as shown in fig. 1, the anti-condensation dust meter system is arranged at a straight section of a kiln tail chimney, is about 30 meters away from an outlet of a tail exhaust fan and about 7 times of the diameter of the chimney, is positioned at the same annular position with a monitoring sampling point of an environment-friendly online device, and meets the 6 th requirement in HJ/T75-2017 fixed pollution source smoke emission continuous monitoring technical specification and the 6 th requirement in HJ/T76-2017 fixed pollution source smoke emission continuous monitoring technical requirement and monitoring method.
As shown in fig. 2, the dust meter includes a sampling measuring unit, a control unit, a purging unit, a sample gas diluting device, a jet fan, and a diluting fan; the sampling measurement unit is connected and installed on the wall of the measuring point flue; the control and blowing unit is arranged on an installation platform beside the sampling measurement unit and is 3.0 meters away from the measurement point; and the dilution fan blows the heated external gas to the front end of the probe rod, the jet flow fan emits negative pressure generated by airflow at the exhaust outlet, the dilution gas and the sample gas are mixed and heated into dry flue gas, the dry flue gas is sucked into the measurement unit, and the measured smoke concentration is obtained through conversion of the dilution ratio. The whole system monitors the pressure and the temperature in the process pipeline while sampling, and the measurement accuracy and the stability of the system are ensured.
Heating a heating mode block of equipment after a system is powered on, heating pipelines in the whole system flow, purging a sampling probe pipe by using air generated by a jet fan as the temperature of the heating mode block does not reach the sampling temperature just after the system is powered on, switching valves after the system monitors that the heating temperature reaches a set temperature (the heating temperature of the system is more than 140 ℃), entering a smoke sampling state, sucking sample gas into the sampling probe rod by using negative pressure generated by a jet pump, rapidly mixing heated dilution air with the sampling smoke at the front end of the probe rod, heating the mixture to dry smoke, entering a subsequent heating pipeline, and finally measuring the dust concentration by using a measuring unit; the system monitors the pressure and the temperature in the process pipeline while sampling, so that the measurement accuracy and the stability of the system are ensured. The system normally samples after reaching the set temperature, and a fixed dilution ratio is set, and meanwhile, the system can constantly sample and analyze the flue gas due to the stable rotating speed of the jet pump.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The anti-condensation dust meter system is characterized in that the dust meter is installed at the straight section of a kiln tail chimney, and the installation position is 30 meters away from the outlet of a tail exhaust fan and is 7 times of the diameter of the chimney.
2. The condensation-preventing dust meter system according to claim 1, wherein the dust meter is located at the same circumferential position as the environmental online device monitoring and sampling point.
3. The condensation-preventing dust meter system according to claim 1 or 2, wherein the dust meter comprises a sampling measuring unit, a control unit, a purging unit, a sample gas diluting device, a jet fan and a diluting fan; the sampling measurement unit is connected and installed on the wall of the measuring point flue; the control unit and the blowing unit are arranged on an installation platform beside the sampling measurement unit, and the distance between the control unit and the blowing unit is 3.0 meters; the dilution fan blows the heated outside air to the front end of the probe rod, the jet fan emits negative pressure generated by airflow at the exhaust outlet, the dilution air and the sample air are mixed and heated into dry flue gas to be sucked into the measurement unit, and the measured smoke concentration is obtained through conversion of the dilution ratio.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202022562694.1U CN214121926U (en) | 2020-11-09 | 2020-11-09 | Anti-condensation dust meter system |
Applications Claiming Priority (1)
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CN202022562694.1U CN214121926U (en) | 2020-11-09 | 2020-11-09 | Anti-condensation dust meter system |
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Publication Number | Publication Date |
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CN214121926U true CN214121926U (en) | 2021-09-03 |
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CN202022562694.1U Active CN214121926U (en) | 2020-11-09 | 2020-11-09 | Anti-condensation dust meter system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118090351A (en) * | 2024-04-29 | 2024-05-28 | 山东中节能天融环保技术有限公司 | A trace exhaust gas monitoring device |
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2020
- 2020-11-09 CN CN202022562694.1U patent/CN214121926U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118090351A (en) * | 2024-04-29 | 2024-05-28 | 山东中节能天融环保技术有限公司 | A trace exhaust gas monitoring device |
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