CN103399057A - Flue gas treatment system and dry-wet oxygen measurement apparatus thereof - Google Patents
Flue gas treatment system and dry-wet oxygen measurement apparatus thereof Download PDFInfo
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- CN103399057A CN103399057A CN2013103598050A CN201310359805A CN103399057A CN 103399057 A CN103399057 A CN 103399057A CN 2013103598050 A CN2013103598050 A CN 2013103598050A CN 201310359805 A CN201310359805 A CN 201310359805A CN 103399057 A CN103399057 A CN 103399057A
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- wet oxygen
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Abstract
The present invention discloses a dry-wet oxygen measurement apparatus for a flue gas treatment system. The dry-wet oxygen measurement apparatus comprises a wet oxygen measurement instrument and a dry oxygen measurement instrument, wherein gas paths of the wet oxygen measurement instrument and the dry oxygen measurement instrument are arranged in a side-by-side manner, an inlet of the wet oxygen measurement instrument is communicated with a flue channel through a pipeline, and an inlet of the dry oxygen measurement instrument is communicated with an outlet of a pretreatment device. During online monitoring, flue gas in the flue channel concurrently enters the gas path of the wet oxygen measurement instrument and the gas path of the dry oxygen measurement instrument, the wet oxygen measurement instrument detects wet oxygen content of the initial flue gas in the flue channel, and the dry oxygen measurement instrument detects dry oxygen content of the flue gas treated through the pretreatment device so as to calculate to obtain humidity of the flue gas, such that concurrent wet oxygen content and dry oxygen content measurement is achieved, delayed quantity between the two measurement values is reduced, and measurement precision of the flue gas humidity is improved. The present invention further discloses a flue gas treatment system comprising the dry-wet oxygen measurement apparatus.
Description
Technical field
The present invention relates to the fume treatment auxiliary technical field, particularly relate to a kind of dried wet oxygen measurement mechanism for smoke processing system.The invention still further relates to a kind of smoke processing system that comprises above-mentioned dried wet oxygen measurement mechanism.
Background technology
Along with improving constantly of people's environmental consciousness, various gaseous contamination accidents have obtained national great attention, contamination accident be the hazards of destroying ecologic environment, threatening human health; Based on the present Environmental Pollution of China, research and develop high performance smoke processing system, promote environment risk identification, assessment, prevention, emergency disposal level extremely urgent.
The moisture measurement of high-temperature flue gas is one of important indicator of measuring of flue gas, at present, and the humidity by dried wet oxygen measurement mechanism detection high-temperature flue gas how.In " technical requirement of fixed pollution source smoke discharge continuous monitor system and detection method " (HJ/T76-2007 standard) that State Environmental Protection Administration formulates; can measure the forward and backward oxygen content of flue gas dehumidifying by the lambda sensor of CEMS configuration and calculate flue gas moisture content; namely measure the oxygen amount in dried wet flue gas, by calculating, obtain moisture content of flue gas adopting.Traditional dried wet oxygen measurement mechanism comprises wet oxygen measurement mechanism and dried oxygen measurement device, wherein, the wet oxygen measurement mechanism is direct insertion zirconia monitor, this direct insertion zirconia monitor is directly installed in flue to measure wet oxygen by the through hole of offering on flue, after dried oxygen measurement device is arranged on pretreatment system, when being monitored gaseous contaminant, the dry flue gas of pretreatment system discharge carries out dried oxygenation measurement.
but, because the wet oxygen measurement mechanism in traditional dried wet oxygen measurement mechanism directly is inserted in flue, and after dried oxygen measurement device is arranged on pretreatment system, like this, in the course of the work, at first flue gas passes through the wet oxygen measurement mechanism, then through pretreatment system, carry out a series of processing, final treated flue gas can enter dried oxygen measurement device and carry out dried oxygenation measurement, this just causes wet oxygen to be measured and dried oxygenation measurement is on same gas circuit, and both is distant, easily producing measured value lags behind, and the drift direction of dried oxygen measurement device and wet oxygen measurement mechanism is inconsistent, cause the humidity that calculates deviation larger.
Therefore, how to dwindle the hysteresis of wet oxygen measurement and dried oxygenation measurement, reduce the deviation that smoke moisture is measured, improve the measuring accuracy of smoke moisture, need the problem of solution with regard to becoming those skilled in the art badly.
Summary of the invention
The purpose of this invention is to provide a kind of dried wet oxygen measurement mechanism for smoke processing system, it has realized when wet oxygen is measured with dried oxygenation measurement measuring, make the hysteresis of both measured values less, thereby reduced the deviation that smoke moisture is measured, improved the measuring accuracy of smoke moisture.Another object of the present invention is to provide a kind of smoke processing system that comprises above-mentioned dried wet oxygen measurement mechanism.
For solving the problems of the technologies described above, the invention provides a kind of dried wet oxygen measurement mechanism for smoke processing system, comprise wet oxygen measuring instrument and dried oxygen measuring device, the gas circuit of described wet oxygen measuring instrument and described dried oxygen measuring device is in parallel, the import of described wet oxygen measuring instrument is communicated with flue by pipeline, and the import of described dried oxygen measuring device is communicated with outlet treating apparatus with described smoke processing system.
Preferably, also comprise ejector, the first import of described ejector is communicated with compressed air gas source, and the second import of described ejector is communicated with the outlet of described wet oxygen measuring instrument.
Preferably, also comprise vacuum filter, described vacuum filter is series at the gas circuit between described ejector and described compressed air gas source.
Preferably, described wet oxygen measuring instrument is dynamic oxidation zirconium sensor.
Preferably, described dried oxygen measuring device is dynamic oxidation zirconium sensor.
Preferably, described wet oxygen measuring instrument and described dried oxygen measuring device all are arranged in the instrument cabinet of described smoke processing system.
Preferably, be provided with blow device on described wet oxygen measuring instrument and pipeline that described flue is communicated with.
The present invention also provides a kind of smoke processing system, comprises instrument cabinet, is arranged at the pretreatment unit in described instrument cabinet, and be arranged at the dried wet oxygen measurement mechanism in described instrument cabinet, and described dried wet oxygen measurement mechanism is dried wet oxygen measurement mechanism as above.
Dried wet oxygen measurement mechanism provided by the present invention is used for smoke processing system, this dried wet oxygen measurement mechanism comprises wet oxygen measuring instrument and dried oxygen measuring device, described wet oxygen measuring instrument and described dried oxygen measuring device all are arranged in the instrument cabinet of described smoke processing system, and both gas circuits are set up in parallel, the import of described wet oxygen measuring instrument is communicated with flue by pipeline, and the import of described dried oxygen measuring device is communicated with the outlet of the pretreatment unit of described smoke processing system; During on-line monitoring, flue gas in flue enters the gas circuit at wet oxygen measuring instrument place and the gas circuit in dried oxygen measuring device place simultaneously, the wet oxygen measuring instrument detects the wet oxygen content of initial flue gas in flue, dried oxygen measuring device detects the dried oxygen content of the flue gas of processing through pretreatment unit, then through calculating the humidity of flue gas.Like this, realize measuring substantially simultaneously of wet oxygen content and dried oxygen content, reduced the hysteresis between both measured values, improved the measuring accuracy of smoke moisture.
In a kind of embodiment, dried wet oxygen measurement mechanism provided by the present invention also comprises ejector, and the first import of described ejector is communicated with compressed air gas source, and the second import of described ejector is communicated with the outlet of described wet oxygen measuring instrument; Extracting high-temperature flue gas under ejector dependence pressurized air produces in ejector suction function, to improve the work efficiency of wet oxygen measuring instrument.
In another kind of embodiment, dried wet oxygen measurement mechanism provided by the present invention also comprises vacuum filter, and described vacuum filter is series at the gas circuit between described ejector and described compressed air gas source; Like this, in observation process, can regulate by the top hole pressure of regulating vacuum filter the flow of the high-temperature flue gas of extraction, to guarantee the wet oxygen measuring instrument, remain at preferably under duty.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of dried wet oxygen measurement mechanism provided by the present invention.
Embodiment
Core of the present invention is to provide a kind of dried wet oxygen measurement mechanism for smoke processing system, it has realized when wet oxygen is measured with dried oxygenation measurement measuring, make the hysteresis of both measured values less, thereby reduced the deviation that smoke moisture is measured, improved the measuring accuracy of smoke moisture.Another core of the present invention is to provide a kind of smoke processing system that comprises above-mentioned dried wet oxygen measurement mechanism.
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of dried wet oxygen measurement mechanism provided by the present invention.
In a kind of embodiment, dried wet oxygen measurement mechanism provided by the present invention is used for smoke processing system, this dried wet oxygen measurement mechanism comprises wet oxygen measuring instrument 1 and dried oxygen measuring device 2, described wet oxygen measuring instrument 1 and described dried oxygen measuring device 2 all are arranged in the instrument cabinet 7 of described smoke processing system, and both gas circuits are set up in parallel, the import of described wet oxygen measuring instrument 1 is communicated with flue by pipeline, and the import of described dried oxygen measuring device 2 is communicated with the outlet of the pretreatment unit of described smoke processing system 4; During on-line monitoring, flue gas in flue enters the gas circuit at wet oxygen measuring instrument 1 place and the gas circuit in dried oxygen measuring device 2 places simultaneously, wet oxygen measuring instrument 1 detects the wet oxygen content of initial flue gas in flue, dried oxygen measuring device 2 detects the dried oxygen content of the flue gas of processing through pretreatment unit 4, then through calculating the humidity of flue gas.Like this, realize measuring substantially simultaneously of wet oxygen content and dried oxygen content, reduced the hysteresis between both measured values, improved the measuring accuracy of smoke moisture.
In order to prevent the condensation of steam in flue gas, the gas circuit from the high-temperature flue gas of the sampling pipeline shunting of accompanying heat to wet oxygen measuring instrument 1 this section need to add the heating tape insulation.
In the side near flue, the purging element can be set, use air to purge wet oxygen measuring instrument 1, in order to extend the serviceable life of wet oxygen measuring instrument 1.
Dried wet oxygen measurement mechanism also comprises ejector 5, and the first import of described ejector 5 is communicated with compressed air gas source, and the second import of described ejector 5 is communicated with the outlet of described wet oxygen measuring instrument 1; Ejector 5 relies on pressurized air extracting high-temperature flue gas under the suction function of ejector 5 interior generations, to improve the work efficiency of wet oxygen measuring instrument 1.
Above-mentioned dried wet oxygen measurement mechanism also comprises vacuum filter 6, and described vacuum filter 6 is series at the gas circuit between described ejector 5 and described compressed air gas source; Like this, in observation process, can regulate by the top hole pressure of regulating vacuum filter 6 flow of the high-temperature flue gas of extraction, to guarantee wet oxygen measuring instrument 1, remain at preferably under duty.
Preferably, wet oxygen measuring instrument 1 provided by the present invention and dried oxygen measuring device 2 can be dynamic oxidation zirconium sensor, the sensor of same type is used in wet oxygen monitoring, the monitoring of dried oxygen, and regularly with air or same calibrating gas, calibrate, can avoid two lambda sensor drift directions inconsistent, improve the measuring accuracy of dried wet oxygen measurement mechanism.
From theory, also wet oxygen measuring instrument 1 and dried oxygen measuring device 2 can be designed to dynamic oxidation zirconium sensor at the one in both, another one is designed to the sensor of the conventional other types of using in this area, such as the direct plugging-in zirconia sensor etc.
It is pointed out that ordinal numbers such as " first, second " described in literary composition only in order to distinguish the different structure of same names, do not represent certain order, more should not be construed as any restriction.
Except above-mentioned dried wet oxygen measurement mechanism, the present invention also provides a kind of smoke processing system that comprises above-mentioned dried wet oxygen measurement mechanism, and other each several part structures of this smoke processing system please refer to prior art, do not repeat them here.
Above a kind of smoke processing system provided by the present invention and dried wet oxygen measurement mechanism thereof are described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (8)
1. dried wet oxygen measurement mechanism that is used for smoke processing system, comprise wet oxygen measuring instrument (1) and dried oxygen measuring device (2), it is characterized in that, the gas circuit of described wet oxygen measuring instrument (1) and described dried oxygen measuring device (2) is in parallel, the import of described wet oxygen measuring instrument (1) is communicated with flue by pipeline, and the import of described dried oxygen measuring device (2) is communicated with the outlet of the pretreatment unit (4) of described smoke processing system.
2. dried wet oxygen measurement mechanism according to claim 1, it is characterized in that, also comprise ejector (5), the first import of described ejector (5) is communicated with compressed air gas source, and the second import of described ejector (5) is communicated with the outlet of described wet oxygen measuring instrument (1).
3. dried wet oxygen measurement mechanism according to claim 2, is characterized in that, also comprises vacuum filter (6), and described vacuum filter (6) is series at the gas circuit between described ejector (5) and described compressed air gas source.
4. the described dried wet oxygen measurement mechanism of according to claim 1 to 3 any one, is characterized in that, described wet oxygen measuring instrument (1) is dynamic oxidation zirconium sensor.
5. the described dried wet oxygen measurement mechanism of according to claim 1 to 3 any one, is characterized in that, described dried oxygen measuring device (2) is dynamic oxidation zirconium sensor.
6. the described dried wet oxygen measurement mechanism of according to claim 1 to 3 any one, is characterized in that, described wet oxygen measuring instrument (1) and described dried oxygen measuring device (2) all are arranged in the instrument cabinet (7) of described smoke processing system.
7. the described dried wet oxygen measurement mechanism of according to claim 1 to 3 any one, is characterized in that, is provided with blow device on described wet oxygen measuring instrument (1) and pipeline that described flue is communicated with.
8. smoke processing system, comprise instrument cabinet (7), be arranged at the pretreatment unit (4) in described instrument cabinet (7), and be arranged at dried wet oxygen measurement mechanism in described instrument cabinet (7), it is characterized in that, described dried wet oxygen measurement mechanism is dried wet oxygen measurement mechanism as described in claim 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103598050A CN103399057A (en) | 2013-08-16 | 2013-08-16 | Flue gas treatment system and dry-wet oxygen measurement apparatus thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103598050A CN103399057A (en) | 2013-08-16 | 2013-08-16 | Flue gas treatment system and dry-wet oxygen measurement apparatus thereof |
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| CN103399057A true CN103399057A (en) | 2013-11-20 |
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| CN2013103598050A Pending CN103399057A (en) | 2013-08-16 | 2013-08-16 | Flue gas treatment system and dry-wet oxygen measurement apparatus thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911118A (en) * | 2016-06-30 | 2016-08-31 | 重庆川然节能技术有限公司 | Intelligent detection system and method for smoke components |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57149954A (en) * | 1981-03-11 | 1982-09-16 | Sumitomo Cement Co Ltd | Measuring method for moisture content in waste gas |
| CN1885008A (en) * | 2006-07-04 | 2006-12-27 | 王健 | Method and system for monitoring continuous exhaust of smoke |
| CN201993336U (en) * | 2011-01-28 | 2011-09-28 | 青岛佳明测控仪器有限公司 | Flue gas humidity monitoring device with single zirconia probe |
| CN202814943U (en) * | 2012-08-06 | 2013-03-20 | 智谱特环境科技（北京）有限公司 | Device with two oxygen sensors for online monitoring of flue gas humidity |
-
2013
- 2013-08-16 CN CN2013103598050A patent/CN103399057A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57149954A (en) * | 1981-03-11 | 1982-09-16 | Sumitomo Cement Co Ltd | Measuring method for moisture content in waste gas |
| CN1885008A (en) * | 2006-07-04 | 2006-12-27 | 王健 | Method and system for monitoring continuous exhaust of smoke |
| CN201993336U (en) * | 2011-01-28 | 2011-09-28 | 青岛佳明测控仪器有限公司 | Flue gas humidity monitoring device with single zirconia probe |
| CN202814943U (en) * | 2012-08-06 | 2013-03-20 | 智谱特环境科技（北京）有限公司 | Device with two oxygen sensors for online monitoring of flue gas humidity |
Non-Patent Citations (1)
| Title |
|---|
| 秦宇 等: "浅谈烟气分析仪的在线校准", 《安全与环境工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911118A (en) * | 2016-06-30 | 2016-08-31 | 重庆川然节能技术有限公司 | Intelligent detection system and method for smoke components |
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Application publication date: 20131120 |