CN101644643A - Sample air pretreatment device for coke furnace inorganization emission source and method thereof - Google Patents
Sample air pretreatment device for coke furnace inorganization emission source and method thereof Download PDFInfo
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- CN101644643A CN101644643A CN200910189817A CN200910189817A CN101644643A CN 101644643 A CN101644643 A CN 101644643A CN 200910189817 A CN200910189817 A CN 200910189817A CN 200910189817 A CN200910189817 A CN 200910189817A CN 101644643 A CN101644643 A CN 101644643A
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Abstract
The invention discloses a sample air pretreatment device for coke furnace inorganization emission source, comprising a sampling probe, an air trace pipe connected with the sampling probe and a filterdrying assembly connected with the air trace pipe and an analysis treatment unit. The filter drying assembly comprises an air water separator connected with the air trace pipe, an SO3 air fog catcherconnected with the air water separator, a diaphragm air pump connected with the SO3 air fog catcher, an electronic refrigerator connected with the diaphragm air pump and a film penetration dryer connected with the electronic refrigerator. The invention also discloses an air sample pretreatment method; by using four-stage refrigeration for water removal, the invention guarantees the long periodicalstable operation of the analysis system, and causes the air sample to infinitely close to original property and characteristic; meanwhile, the filter element is utilized to effectively get rid of interfering components, thereby facilitating the analysis data to be more accurate. In addition, the sampling probe can be cleaned regularly.
Description
Technical field
The present invention relates to a kind of gas sampling pretreatment unit and method thereof, specifically be meant a kind of sample gas pretreatment unit and method thereof that is used for coke oven uncontrollable discharge source.
Background technology
It is that the different specific questions of polluting with general atmosphere of Domestic Environment pollution exist that coking is polluted always.It is not only organized to the high altitude discharge flue dust by chimney in process of production, cause atmospheric pollution, influence atmospheric environment, and because the operation of coalingging, discharge of the coke under the open environment, a large amount of loss and leakage have also been formed, make and do uncontrollable discharge, not only directly the workman of coke-oven plant and near resident physical and mental health are worked the mischief, and be the main cause that causes people's visual pollution and area image to pollute.
At present China is for the management of mechanization coke oven uncontrollable discharge, and the checkout equipment of Environmental Impact Assessment of Construction Items, design, final acceptance of construction and monitoring means are still in the starting stage.Because the uncontrollable discharge pollution source disperse, height of release is low, discharge capacity is little, without the abundant characteristics that just enter the ground breathing zone, therefore, pre-service to collection sample gas, make sample gas keep its original attribute and feature as far as possible, discharge interfering component simultaneously, make sampling representative, the reflection actual conditions are to carry out the primary difficult point problem that solves of sample analysis.
Summary of the invention
The objective of the invention is to provides a kind of sample gas pretreatment unit that is used for coke oven uncontrollable discharge source for overcoming the deficiencies in the prior art.
The technology contents of the present invention's pretreatment unit is: the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source, it is characterized in that gas trace pipe that comprises sampling probe, connects with sampling probe and the filtration drying assembly that connects with the gas trace pipe, the output terminal of described filtration drying assembly connects with the analysis and processing unit of outside.
Its further technology contents is: described filtration drying assembly comprises the moisture trap that connects with the gas trace pipe, the SO that connects with moisture trap
3Aerosol catcher and SO
3The barrier film aspiration pump that the aerosol catcher connects, with every touching electronic refrigerator that aspiration pump connects and the film permeation exsiccator that connects with electronic refrigerator; Described film permeation exsiccator is provided with the output terminal that connects with the external analysis processing unit.
Its further technology contents is: also comprise the instrument blowback wind unit that connects with filtration drying assembly input end, output terminal; Described instrument blowback wind unit comprises instrument general mood source, the front end efferent duct of purge gas is provided and the rear end efferent duct of span gas is provided for instrument for sampling probe.
Its further technology contents is: also comprise the demarcation unit that connects with filtration drying assembly input end, output terminal.
Its further technology contents is: described demarcation unit comprises demarcates source of the gas and power gas source; Described demarcation source of the gas comprises NOx gas, SO
2Gas and N
2Gas.
Its further technology contents is: described filtration drying assembly also is connected with the constant voltage parts that are used to regulate the shunt valve of flow and are used to discharge condensate water and waste gas; Be provided with between the freeing port of described constant voltage parts and moisture trap and can prevent the safety component that flows backwards; Described condensate water comprises moisture trap condensate water and electronic refrigerator condensate water.
Its further technology contents is: also have additional membrane filter between described electronic refrigerator and the film permeation exsiccator.
Its further technology contents is: described electronic refrigerator comprises one-level electronic refrigerator and secondary electrons refrigerator.
Its further technology contents is: described filtration drying assembly also is provided with the output interface that connects with oxygen analyser.
The technology contents of preprocess method of the present invention is: be used for the sample gas preprocess method in coke oven uncontrollable discharge source, it is characterized in that sample gas is carried out pre-service be may further comprise the steps: a. sampling probe is collected the contaminated sample gas that the uncontrollable discharge source emission comes out; B. after sample gas heats through the gas trace pipe, enter moisture trap; C. hot sample gas is cooled to room temperature or near room temperature, separates out condensate water and discharge in moisture trap; D. sample gas enters SO again
3The aerosol catcher, removing in the sample gas influences SO
2The SO that measures
3And dust; E. again through barrier film bleed, after the dry third class de-watering of electronic cooling and film permeation, sample gas enters analysis and processing unit; Also comprise the blowback wind process that acquisition probe is regularly cleaned, this blowback elegance source of the gas shared with instrument wind, this source of the gas is provided by instrument blowback wind unit; Also comprise the calibration process of the instruments such as analysis and processing unit of postorder being carried out zero point, range calibration, described calibration process is finished by demarcating the unit.Electronic cooling process wherein comprises one-level electronic cooling and secondary electrons refrigeration; Carry out the membrane filtration process earlier after the electronic cooling, enter the film permeation dry run again.
The present invention's beneficial effect compared with prior art is: the present invention has adopted the gas trace pipe, thus can dewfall in pipeline thereafter, thus avoid H
2S and SO
2Be dissolved in water and influence measuring accuracy.Dewater by the level Four refrigeration, make the water dewfall point in the flue gas reach below-30 ℃, guarantee the long-period stable operation of analytic system, make sample gas be infinitely close to original attribute and feature, adopted filtering element simultaneously, effectively get rid of interfering component, made the analysis data more accurate, had more representativeness.The instrument blowback wind unit of employing of the present invention in addition and the shared source of the gas of instrument wind can regularly clean acquisition probe.Also be provided with the demarcation unit, can demarcate analysis and processing unit very easily.This installs each parts and adopts anti-corrosion materials such as stainless steel and teflon in addition, and the anticorrosive of system improved widely.In a word, the present invention can carry out pre-service effectively to the sample gas in uncontrollable discharge source, and the energy long-term work, and the life-span is long; And the function that can demarcate the analysis and processing unit of postorder.
Below in conjunction with the drawings and specific embodiments the present invention is further described.
Description of drawings
Fig. 1 is used for the frame structure synoptic diagram of the sample gas pretreatment unit specific embodiment in coke oven uncontrollable discharge source for the present invention;
Fig. 2 is used for the planar structure synoptic diagram of the sample gas pretreatment unit specific embodiment in coke oven uncontrollable discharge source for the present invention.
Description of reference numerals
1 sampling probe, 2 gas trace pipes
3 moisture traps, 4 SO
3The aerosol catcher
5 barrier film aspiration pumps, 6 one-level electronic refrigerators
7 grades of electronic refrigerator 8 membrane filters
9 film permeation exsiccators, 10 analysis and processing unit
The unit is demarcated in 11 instrument blowback wind unit 12
13 safety components, 14 constant voltage parts
15 run-down pipes, 16 off-gas lines
17 shunt valves, 18 oxygen analysers
Embodiment
In order to more fully understand technology contents of the present invention, below in conjunction with specific embodiment technical scheme of the present invention is further introduced and explanation, but be not limited to this.
As depicted in figs. 1 and 2, a kind of sample gas pretreatment unit that is used for coke oven uncontrollable discharge source of the present invention, comprise sampling probe 1, the gas trace pipe 2 that connects with sampling probe 1 and the filtration drying assembly that connects with gas trace pipe 2, the output terminal of filtration drying assembly connects with the analysis and processing unit 10 of outside.The filtration drying assembly comprises the moisture trap 3 that connects with gas trace pipe 2, the SO that connects with moisture trap 3
3Aerosol catcher 4 and SO
3The barrier film aspiration pump 5 that aerosol catcher 4 connects, with every touching electronic refrigerator (electronic refrigerator comprises one-level electronic refrigerator 6 and secondary electrons refrigerator 7), membrane filter 8 that connects with electronic refrigerator that aspiration pump 5 connects and the film permeation exsiccator 9 that connects with membrane filter 8; Film permeation exsiccator 9 is provided with the output terminal that connects with external analysis processing unit 10.Also comprise the instrument blowback wind unit 11 that connects with filtration drying assembly input end, output terminal; Instrument blowback wind unit 11 comprises instrument general mood source, the front end efferent duct of purge gas is provided and the rear end efferent duct (not shown) of span gas is provided for instrument for sampling probe.Also comprise the demarcation unit 12 that connects with filtration drying assembly input end, output terminal.Demarcate unit 12 and comprise demarcation source of the gas and power gas source; Demarcate source of the gas and comprise NOx gas, SO
2Gas and N
2Gas.
The filtration drying assembly also is connected with shunt valve 17 (being connected to the front end of electronic refrigerator) that is used to regulate flow and the constant voltage parts 14 that are used to discharge condensate water (condensate water that comprises electronic refrigerator and moisture trap) and waste gas; Be provided with the safety component 13 (a kind of filter screen structure that prevents that liquid from flowing backwards) that can prevent refluence (condensate water) between the freeing port of constant voltage parts 14 and moisture trap 3.The filtration drying assembly also is provided with the output interface that connects with oxygen analyser, and (as shown in Figure 2, this output interface is connected between membrane filter 8 and the film permeation exsiccator 9.
Be used for the sample gas preprocess method in coke oven uncontrollable discharge source, it may further comprise the steps:
A. sampling probe is collected the contaminated sample gas that the uncontrollable discharge source emission comes out;
B. after sample gas heats through the gas trace pipe, enter moisture trap;
C. hot sample gas is cooled to room temperature or near room temperature, separates out condensate water and discharge in moisture trap;
D. sample gas enters SO again
3The aerosol catcher, removing in the sample gas influences SO
2The SO that measures
3And dust;
E. again through barrier film bleed, after the dry third class de-watering of electronic cooling and film permeation, sample gas enters analysis and processing unit;
Also comprise the blowback wind process that acquisition probe is regularly cleaned, this blowback elegance source of the gas shared with instrument wind, this source of the gas is provided by instrument blowback wind unit; Also comprise the calibration process of the instruments such as analysis and processing unit of postorder being carried out zero point, range calibration, described calibration process is finished by demarcating the unit.Electronic cooling process wherein comprises one-level electronic cooling and secondary electrons refrigeration; Carry out the membrane filtration process earlier after the electronic cooling, enter the film permeation dry run again.
Some technical descriptioons when below being concrete enforcement:
Sampling probe 1 can be regularly carries out blowback cleaning (air of blowback wind is from instrument blowback wind unit) by system's automatic or manual (realizing manually control or control automatically by valve) to the dust stratification of its cartridge surface, guarantees that sample gas gathers unobstructed.Because gas sampling and gas delivery all adopt controlled companion's hot mode, because of the pipeline that can avoid to greatest extent causing owing to dewfall pollutes, stops up.The use of anti-corrosion material such as stainless steel and teflon improves the anticorrosive of system greatly.
Sample gas under the synergy of gas trace pipe 2, at first enters moisture trap 3 (YX-QS-TH02-03 type) from sampling probe 1.Moisture trap 3 is made by stainless steel, it is outer survey have cooling fan, hot sample gas enter the back rapidly cooling reach room temperature or, separate out moisture near room temperature.So can dewfall in pipeline thereafter, thereby avoid H
2S and SO
2Be dissolved in water and influence measuring accuracy.
Sample gas is again by SO3 catcher 4 (YX-SO3-TL04-III type), and removing influences SO
2The SO that measures
3, dust, pass through barrier film aspiration pump 5, electronic refrigerator 6 and 7, film permeation exsiccator 9 third class de-waterings again.Barrier film aspiration pump 5 maximum rates of air sucked in required are about 10L/min.Sample gas is divided into two-way before entering electronic refrigerator 6,7, one the road and condensate water enter constant voltage well 14 together, another road enters electronic refrigerator 6,7 through behind strainer tube, is cooled to 2 ℃, and then after membrane filter 8 further dryings, dedusting, enter analysis and processing unit 10.Each monitoring factor is measured by analysis and processing unit 10 independently, eliminates the phase mutual interference between the monitoring factor.
The process of refrigeration dehydration: air blast cooling → one-level electronic cooling 6 → secondary electrons refrigeration (protection) 7 → film permeation exsiccator 9.Electronic refrigerator adopts the semi-conducting material manufacturing (peltier effect) of energy-conserving and environment-protective.
Air blast cooling: temperature drop is rapid, and dehydrating effect is good, SO
2Loss amount is low, favorable anti-corrosion effect.Mainly utilize gas flow can take away the principle of heat, use special stainless steel material, can prevent corrosion, this process is the main process of refrigeration, and the temperature of gas is reduced near room temperature, accounts for more than 90% of whole refrigeration dehydration basically.This process is a quick separating process of gas-liquid, and condensate water can prevent H well from reentering safety component 13 (being called escape pit again)
2S and SO
2Be dissolved in water, whole process SO
2Loss amount can be below 0.01%.
The one-level electronic cooling: the refrigeration after the air blast cooling mainly is water, the reduction gas temperature of further removing in the sample gas, makes its optimum working temperature that reaches analysis and processing unit (4 ℃).Principal feature be fast, water removal effect is complete, the dew point of flue gas can drop to below 0 ℃ after this process.
The secondary electrons refrigeration: the secondary refrigeration has protective effect each other, and after the previous stage electronic cooling lost efficacy, back one-level electronic cooling can effectively be worked, and avoids dehydration to lose efficacy and causes corrosion for preprocessing process and analysis and processing unit.
Film permeation exsiccator 9: further dry sample gas, the dewfall of sample gas point reaches below-30 ℃ after this process, can be good at protecting analysis and processing unit not to be subjected to the corrosion of sample gas.Can filter out simultaneously the suspended particle (gaseous state and liquid state) in the sample gas, avoid particle shading influence to cause the measured value deviation.
Dewater by the level Four refrigeration, make that the water dewfall point in the flue gas reaches below-30 ℃, guarantee the long-period stable operation of analytic system, make sample gas be infinitely close to original attribute and feature, simultaneously effectively get rid of the analysis interfering component, made the analysis data more accurate, had more representativeness.
Instrument blowback wind unit 11: the span gas that provides blowback source of the gas and oxygen analyser to demarcate.
Demarcate unit 12: instrument is carried out zero point, range calibration.
Safety component (escape pit) 13: the aqueous reflux that prevents the constant voltage well enters the gas gas circuit and analysis and processing unit is worked the mischief.
Constant voltage parts (constant voltage well) 14: the discharge of waste water, waste gas keeps constant flow velocity, pressure to gathering local sample gas.
Run-down pipe 15: discharge condensate water.
Off-gas line 16 (outdoor exhaust): the sample gas more than needed that will gather is outdoor through discharging after the water filtration, in order to avoid cause the objectionable impurities in the sample gas to be stranded in the monitoring station, and the maintainer is worked the mischief.
Bypass 17: flow is regulated, unnecessary gas is discharged from other pipelines.
Oxygen analyser 18: the oxygen level in the sample gas is measured.
More than can solenoid valve or hand valve be set according to actual needs in the duct coupling between each unit and each parts, to realize control system it is controlled automatically, or can carry out manually opened when safeguarding or close.
In sum, the present invention has adopted the gas trace pipe, thus can dewfall in pipeline thereafter, thus avoid H
2S and SO
2Be dissolved in water and influence measuring accuracy.Dewater by the level Four refrigeration, make the water dewfall point in the flue gas reach below-30 ℃, guarantee the long-period stable operation of analytic system, make sample gas be infinitely close to original attribute and feature, adopted filtering element simultaneously, effectively get rid of interfering component, made the analysis data more accurate, had more representativeness.The instrument blowback wind unit of employing of the present invention in addition and the shared source of the gas of instrument wind can regularly clean acquisition probe.Also be provided with the demarcation unit, can demarcate analysis and processing unit very easily.This installs each parts and adopts anti-corrosion materials such as stainless steel and teflon in addition, and the anticorrosive of system improved widely.In a word, the present invention can carry out pre-service effectively to the sample gas in uncontrollable discharge source, and the energy long-term work, and the life-span is long; And the function that can demarcate the analysis and processing unit of postorder.
The above only further specifies technology contents of the present invention with embodiment, so that the reader is more readily understood, but does not represent embodiments of the present invention to only limit to this, anyly extends or recreation according to the technology that the present invention did, and all is subjected to protection of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source, it is characterized in that gas trace pipe that comprises sampling probe, connects with sampling probe and the filtration drying assembly that connects with the gas trace pipe, the output terminal of described filtration drying assembly connects with the analysis and processing unit of outside.
2. the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source according to claim 1 is characterized in that described filtration drying assembly comprises the moisture trap that connects with the gas trace pipe, the SO that connects with moisture trap
3Aerosol catcher and SO
3The barrier film aspiration pump that the aerosol catcher connects, with every touching electronic refrigerator that aspiration pump connects and the film permeation exsiccator that connects with electronic refrigerator; Described film permeation exsiccator is provided with the output terminal that connects with the external analysis processing unit.
3. the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source according to claim 2 is characterized in that also comprising the instrument blowback wind unit that connects with filtration drying assembly input end, output terminal; Described instrument blowback wind unit comprises instrument general mood source, the front end efferent duct of purge gas is provided and the rear end efferent duct of span gas is provided for instrument for sampling probe.
4. the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source according to claim 3 is characterized in that also comprising the demarcation unit that connects with filtration drying assembly input end, output terminal.
5. the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source according to claim 4 is characterized in that described demarcation unit comprises demarcation source of the gas and power gas source; Described demarcation source of the gas comprises NOx gas, SO
2Gas and N
2Gas.
6. the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source according to claim 5 is characterized in that described filtration drying assembly also is connected with the constant voltage parts that are used to regulate the shunt valve of flow and are used to discharge condensate water and waste gas; Be provided with between the freeing port of described constant voltage parts and moisture trap and can prevent the safety component that flows backwards; Described condensate water comprises moisture trap condensate water and electronic refrigerator condensate water.
7. the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source according to claim 6 is characterized in that also having additional membrane filter between described electronic refrigerator and the film permeation exsiccator; Described electronic refrigerator comprises one-level electronic refrigerator and secondary electrons refrigerator.
8. the sample gas pretreatment unit that is used for coke oven uncontrollable discharge source according to claim 7 is characterized in that described filtration drying assembly also is provided with the output interface that connects with oxygen analyser.
9. the sample gas preprocess method that is used for coke oven uncontrollable discharge source is characterized in that sample gas is carried out pre-service be may further comprise the steps:
A. sampling probe is collected the contaminated sample gas that the uncontrollable discharge source emission comes out;
B. after sample gas heats through the gas trace pipe, enter moisture trap;
C. hot sample gas is cooled to room temperature or near room temperature, separates out condensate water and discharge in moisture trap;
D. sample gas enters SO again
3The aerosol catcher, removing in the sample gas influences SO
2The SO that measures
3And dust;
E. again through barrier film bleed, after the dry third class de-watering of electronic cooling and film permeation, sample gas enters analysis and processing unit;
Also comprise the blowback wind process that acquisition probe is regularly cleaned, this blowback elegance source of the gas shared with instrument wind, this source of the gas is provided by instrument blowback wind unit; Also comprise the calibration process of the instruments such as analysis and processing unit of postorder being carried out zero point, range calibration, described calibration process is finished by demarcating the unit.
10. the sample gas preprocess method that is used for coke oven uncontrollable discharge source according to claim 9 is characterized in that described electronic cooling process comprises one-level electronic cooling and secondary electrons refrigeration; Carry out the membrane filtration process earlier after the electronic cooling, enter the film permeation dry run again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910189817A CN101644643A (en) | 2009-08-29 | 2009-08-29 | Sample air pretreatment device for coke furnace inorganization emission source and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910189817A CN101644643A (en) | 2009-08-29 | 2009-08-29 | Sample air pretreatment device for coke furnace inorganization emission source and method thereof |
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| CN101644643A true CN101644643A (en) | 2010-02-10 |
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|---|---|---|---|
| CN200910189817A Pending CN101644643A (en) | 2009-08-29 | 2009-08-29 | Sample air pretreatment device for coke furnace inorganization emission source and method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915687A (en) * | 2010-08-04 | 2010-12-15 | 聚光科技(杭州)股份有限公司 | Gas preprocessing method and device applied to analytical instruments |
| CN102778518A (en) * | 2012-07-17 | 2012-11-14 | 东南大学 | Method and device for measuring SOx in fire coal fume |
| CN103123308A (en) * | 2011-11-18 | 2013-05-29 | 佛山市南华仪器股份有限公司 | Preposed sample gas treatment device of hot-air heating type diesel vehicle discharged sewage analyzer |
| CN104390836A (en) * | 2014-11-24 | 2015-03-04 | 中国科学院沈阳自动化研究所 | Copper smelting smoke analysis and sample injection processing system and method |
| CN105738579A (en) * | 2016-05-03 | 2016-07-06 | 北京英视睿达科技有限公司 | Treatment method for improving atmospheric particulate measurement precision |
| CN106769269A (en) * | 2017-01-23 | 2017-05-31 | 宇星科技发展(深圳)有限公司 | A kind of sampling of VOCs on-line monitorings and pretreatment system |
| CN107153022A (en) * | 2017-07-06 | 2017-09-12 | 湖南千盟智能信息技术有限公司 | A kind of online coke oven flue gas analytical instrument pretreatment system |
| CN109060466A (en) * | 2018-10-30 | 2018-12-21 | 中国气象局气象探测中心 | Sample gas processing method and device for greenhouse gases background online observation |
| CN109884246A (en) * | 2019-01-10 | 2019-06-14 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Measure SO in anode furnace2, CO content device and smelting control method |
| CN110044676A (en) * | 2019-04-24 | 2019-07-23 | 上海汉克威自动化科技有限公司 | One kind being used for acrylonitrile installation oxygen analyzer sample gas pretreatment system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915687A (en) * | 2010-08-04 | 2010-12-15 | 聚光科技(杭州)股份有限公司 | Gas preprocessing method and device applied to analytical instruments |
| CN101915687B (en) * | 2010-08-04 | 2012-03-28 | 聚光科技(杭州)股份有限公司 | Gas preprocessing method and device applied to analytical instruments |
| CN103123308A (en) * | 2011-11-18 | 2013-05-29 | 佛山市南华仪器股份有限公司 | Preposed sample gas treatment device of hot-air heating type diesel vehicle discharged sewage analyzer |
| CN103123308B (en) * | 2011-11-18 | 2015-04-01 | 佛山市南华仪器股份有限公司 | Preposed sample gas treatment device of hot-air heating type diesel vehicle discharged sewage analyzer |
| CN102778518A (en) * | 2012-07-17 | 2012-11-14 | 东南大学 | Method and device for measuring SOx in fire coal fume |
| CN104390836A (en) * | 2014-11-24 | 2015-03-04 | 中国科学院沈阳自动化研究所 | Copper smelting smoke analysis and sample injection processing system and method |
| CN105738579A (en) * | 2016-05-03 | 2016-07-06 | 北京英视睿达科技有限公司 | Treatment method for improving atmospheric particulate measurement precision |
| CN106769269A (en) * | 2017-01-23 | 2017-05-31 | 宇星科技发展(深圳)有限公司 | A kind of sampling of VOCs on-line monitorings and pretreatment system |
| CN107153022A (en) * | 2017-07-06 | 2017-09-12 | 湖南千盟智能信息技术有限公司 | A kind of online coke oven flue gas analytical instrument pretreatment system |
| CN109060466A (en) * | 2018-10-30 | 2018-12-21 | 中国气象局气象探测中心 | Sample gas processing method and device for greenhouse gases background online observation |
| CN109884246A (en) * | 2019-01-10 | 2019-06-14 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Measure SO in anode furnace2, CO content device and smelting control method |
| CN110044676A (en) * | 2019-04-24 | 2019-07-23 | 上海汉克威自动化科技有限公司 | One kind being used for acrylonitrile installation oxygen analyzer sample gas pretreatment system and method |
| CN110044676B (en) * | 2019-04-24 | 2022-01-14 | 上海汉克威自动化科技有限公司 | Sample gas pretreatment system and method for acrylonitrile device oxygen analyzer |
| CN113295504A (en) * | 2021-05-31 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Composition method on-line monitoring system for metallurgical byproduct gas |
| CN113295504B (en) * | 2021-05-31 | 2023-03-03 | 马鞍山钢铁股份有限公司 | Composition method on-line monitoring system for metallurgical byproduct gas |
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Application publication date: 20100210 |