CN106769355A - A kind of multicomponent flue gas analyzer interference blanking unit and method - Google Patents
A kind of multicomponent flue gas analyzer interference blanking unit and method Download PDFInfo
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- CN106769355A CN106769355A CN201611041368.8A CN201611041368A CN106769355A CN 106769355 A CN106769355 A CN 106769355A CN 201611041368 A CN201611041368 A CN 201611041368A CN 106769355 A CN106769355 A CN 106769355A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/104—Oxygen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
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Abstract
Include body the invention discloses a kind of flue gas analyzer interference blanking unit and method, mechanism of supplying gas is set gradually on body, air inlet, dust-filtering film, gas splitter, gas pump and gas outlet, body is externally provided with thermostat, described mechanism of supplying gas includes environment temperature sensor, controller and magnetic valve, described environment temperature sensor is used to monitor real time environment temperature and sends controller to, described controller realizes the real-time adjustment of flow of supplying gas according to real time environment temperature control magnetic valve, described dust-filtering film is 100% pyrex tunica fibrosa, described gas splitter is the stainless steel tube molecular sieve and silicagel column of series connection, described gas pump is used to ensure that analyzed gas can pass through gas outlet with given pace and pressure, to ensure the analytical effect of flue gas analyzer.
Description
Technical field
The invention belongs to flue gas analyzer field, more particularly, to a kind of multicomponent flue gas analyzer interference blanking unit and
Method.
Background technology
Flue gas analyzer is mainly used in measuring sulfur dioxide, nitrogen oxides, carbon monoxide in discharge of pollutant sources gas etc.
The concentration of pernicious gas and oxygen, common mainly has constant potentiometric electrolysis, non-dispersion infrared absorption process etc..However, due to gas
The similitude of the physical and chemical performance such as body molecular dimension or electrode potential so that there is cross jamming between under test gas, that is, sense
The response that device is produced to other gases outside object gas, these serious interferences influence the accurate of live flue gas measurement data
Property.Current interference elimination method mainly has selection characteristic electrode material and improves the selectivity of catalyst raising sensor, applies
Plus " biasing " voltage increase sensor, built-in chemical filter with interference gas occur chemically react or by absorption so as to select
Property the removing interference method such as gas.But the above method is mainly the elimination of interference gas or reduces, and can not but realize multigroup
The common detection of point gas, additionally, the increase of " biasing " voltage can also lowering apparatus sensitivity, while consolidating present in flue gas
Body granule foreign meeting severe jamming detection process, causes analysis precision to reduce.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of interference blanking unit of multicomponent flue gas analyzer, leading to
A kind of preposition effective filter and fast gas separator are crossed, the separation to mixed flue gas is realized, so as to really realize many
While planting component flue gas, accurately, efficiently determine, filled up domestic blank.
The complete technical scheme of the present invention includes：
A kind of flue gas analyzer interference blanking unit, including body, set gradually on body air inlet, dust-filtering film,
Gas splitter, gas pump and gas outlet, body are externally provided with thermostat；
Air inlet is also connected with mechanism of supplying gas, and described mechanism of supplying gas includes environment temperature sensor, controller and magnetic valve,
Described environment temperature sensor is used to monitor real time environment temperature and sends controller to, and described controller is according to real-time ring
Temperature control magnetic valve in border is realized supplying gas the real-time adjustment of flow；
Described dust-filtering film is 100% pyrex tunica fibrosa,
Described gas splitter is the stainless steel tube molecular sieve and silicagel column of series connection, and described stainless molecular sieve section is
8mm × 500mm, aperture size is 5A grades, and grain graininess is 80~100 mesh in silicagel column；
Described gas pump is used to ensure that analyzed gas can be with given pace and pressure by gas outlet, to ensure flue gas
The analytical effect of analyzer.
Described dust-filtering film thickness is 0.3mm, and filter opening aperture is 0.7um, and highest can bear 300 DEG C of high temperature, is retained
Molecular weight is 10000, to the rejection more than 90% of impurity.
Described gas splitter is by SO2、NO、NO2、O2Gas is separated successively, gas with various component is sequentially entered successively
Flue gas analyzer is analyzed.
Described thermostat temperature is 40 DEG C.
The flue gas analyzer interference blanking unit is more than 99.9% to the degree of being separated from each other of gas.
Gas interference elimination method is carried out using described device, is comprised the following steps：
(1) mechanism of supplying gas is opened, environment temperature sensor monitoring real time environment temperature simultaneously sends controller to, controller control
Magnetic valve processed is realized supplying gas the real-time adjustment of flow；
(2) gas enters body by air inlet, and 40 DEG C are heated under thermostat, while passing through dust-filtering
Film, will produce the impurities of infringement outside mask work region to gas splitter, and rejection is not less than 90%；
(3) gas is different from polarity according to its molecular weight by entering gas splitter after filter membrane purification, by SO2、
NO、NO2、O2Separated successively Deng gas with various component, sequenced through gas pump, degree of being separated from each other is 99.9%；
(4) gas pump ensures that analyzed gas can be with aspirated pressure 0.1MPa constant pressures by gas outlet, into flue gas analysis
Instrument is analyzed, and realizes the common detection of multicomponent gas.
The present invention is relative to the advantage of prior art：
1. a kind of preposition effective filter and fast gas separator are used, the separation to mixed flue gas is realized, just
While realizing various ingredients flue gas, accurately, efficiently determine.
2. demand is directed to, using rational filtration device structure, filter effect and separative efficiency is improve.
3. using series connection stainless steel tube molecular sieve and silicagel column is as splitter and rationally designs its structure, make point
The SO of analysis2、NO、NO2、O2The through-rate of gas realizes rational difference, it is ensured that the effect of subsequent analysis.
4. thermostat, the setting of mechanism of supplying gas, it is ensured that the interference eradicating efficacy stablized under varying environment, it is ensured that
The referring to property of data.
Brief description of the drawings
Fig. 1 is flue gas analyzer interference blanking unit structural representation of the present invention.
1- air inlets in figure, 2- gas outlets, 3- dust-filtering films, 4- gas splitters, 5- thermostats, 6- gas pumps：
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
A kind of flue gas analyzer interference blanking unit, including body, set gradually air inlet 1, dust-filtering film on body
3rd, gas splitter 4, gas pump 6 and gas outlet 2, body are externally provided with thermostat 5；
Mechanism of supplying gas is also connected with outside air inlet, described mechanism of supplying gas includes environment temperature sensor, controller and electromagnetism
Valve, described environment temperature sensor is used to monitor real time environment temperature and sends controller to, and described controller is according to reality
When environment temperature control magnetic valve realize the real-time adjustment of flow of supplying gas, due to flue gas analyzer interference blanking unit of the invention
Need to realize the interference blanking unit that its is optimal at a constant temperature, and because heat transfer needs the time, gas pushing quantity is excessive or too small, gas
Temperature is high or low, will cause feeding flue gas that constant temperature, influence separating effect or reduction efficiency can not be reached in very short time,
And the environment temperature difference of Various Seasonal and region is larger, the temperature, pressure for thereby resulting in gas to be analyzed has large change, because
And be to ensure optimal interference eradicating efficacy, the method using real-time monitoring is carried out to environment temperature, according to temperature monitoring result
And the flow supplied gas with reference to default programme-control, controller is calculated according to temperature monitoring result, by cutting for air inlet
Area and flow velocity, and feeding gas flow is calculated according to gas temperature pressure formula, to ensure feeding gas under thermostat
40 DEG C of constant temperature can be rapidly reached, it is ensured that separating effect；Above-mentioned environment temperature sensor and magnetic valve can use commercially available commercialization
Product, controller can be using conventional PLC control system.
Described dust-filtering film is a kind of white 100% pyrex tunica fibrosa, and thickness is 0.3mm, filter opening aperture
It is 0.7um, highest can bear 300 DEG C of high temperature, and molecular cut off is 10000, the overwhelming majority can be produced to gas splitter
The impurities of infringement outside mask work region, rejection up to more than 90%,
Gas is that size is the stainless of 8mm × 500mm by entering gas splitter, gas splitter after filter membrane purification
Steel pipe molecular sieve, connects with silicagel column, and grain graininess is 80~100 mesh in silicagel column.Silicagel column can separate CO2Gas, point
The aperture size of son sieve is 5A grades, different from polarity according to its molecular weight, can be by SO2、NO、NO2、O2Separated Deng gas, so that
Reach and separate gas with various component successively, sequentially enter the purpose of analyzer analysis.
Gas pump be used for ensureing analyzed gas can with given pace by the device, while this speed will not it is excessive so that
Filter membrane works overloadingly with splitter.For the device, aspirated pressure is advisable with 0.1MPa.
By the connection of the device gas outlet and flue gas analyzer, multi-component flue gas can be made to pass sequentially through flue gas analysis
Instrument, rather than passing through simultaneously, thus eliminating the need the interference between gas, so as to realize while multicomponent flue gas, goes interference
Determine.
In aspirated pressure 0.1MPa, when thermostat is kept for 40 DEG C, gas by after purifier according to molecular weight successively
Analytical equipment is sequentially sequentially entered from small to large, degree of being separated from each other is 99.9%, both ensure that the complete analysis of gas, while also will
Interference is separated from each other, and realizes the common detection of multicomponent gas.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (6)
1. a kind of flue gas analyzer interference blanking unit, it is characterised in that air inlet, powder are set gradually including body, on body
Dirt filter membrane, gas splitter, gas pump and gas outlet, body are externally provided with thermostat；
Described dust-filtering film is 100% pyrex tunica fibrosa；
Described gas splitter is the stainless steel tube molecular sieve and silicagel column of series connection, and described stainless molecular sieve section is 8mm
× 500mm, aperture size is 5A grades, and grain graininess is 80~100 mesh in silicagel column；
Described gas pump is used to ensure that analyzed gas can be with given pace and pressure by gas outlet, to ensure flue gas analysis
The analytical effect of instrument；
Air inlet is also connected with mechanism of supplying gas, and described mechanism of supplying gas includes environment temperature sensor, controller and magnetic valve, described
Environment temperature sensor be used to monitor real time environment temperature and send controller to, described controller is according to real time environment temperature
Spend the real-time adjustment for controlling magnetic valve realization to supply gas flow.
2. flue gas analyzer interference blanking unit as claimed in claim 1, it is characterised in that described dust-filtering film thickness
It is 0.3mm, filter opening aperture is 0.7um, and highest can bear 300 DEG C of high temperature, and molecular cut off is 10000, to the rejection of impurity
More than 90%.
3. flue gas analyzer interference blanking unit as claimed in claim 1, it is characterised in that described gas splitter will
SO2、NO、NO2、O2Gas is separated successively, gas with various component is sequentially entered flue gas analyzer successively and is analyzed.
4. flue gas analyzer interference blanking unit as claimed in claim 1, it is characterised in that described thermostat temperature is
40℃。
5. flue gas analyzer interference blanking unit as claimed in claim 1, it is characterised in that the flue gas analyzer interference disappears
To the degree of being separated from each other of gas it is more than 99.9% except device.
6. gas interference elimination method is carried out using the device described in claim any one of 1-5, it is characterised in that including such as
Lower step：
(1) mechanism of supplying gas is opened, environment temperature sensor monitoring real time environment temperature simultaneously sends controller to, controller control electricity
Magnet valve realizes the real-time adjustment of flow of supplying gas；
(2) gas enters body by air inlet, and 40 DEG C are heated under thermostat, while by dust-filtering film, will
Produce the impurities of infringement outside mask work region gas splitter, rejection is not less than 90%；
(3) gas is different from polarity according to its molecular weight by entering gas splitter after filter membrane purification, by SO2、NO、NO2、
O2Separated successively Deng gas with various component, sequenced through gas pump, degree of being separated from each other is 99.9%；
(4) gas pump ensures that analyzed gas can be with aspirated pressure 0.1MPa constant pressures by gas outlet, into flue gas analyzer point
Analysis, realizes the common detection of multicomponent gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611041368.8A CN106769355A (en) | 2016-11-24 | 2016-11-24 | A kind of multicomponent flue gas analyzer interference blanking unit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611041368.8A CN106769355A (en) | 2016-11-24 | 2016-11-24 | A kind of multicomponent flue gas analyzer interference blanking unit and method |
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| Publication Number | Publication Date |
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| CN106769355A true CN106769355A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611041368.8A Pending CN106769355A (en) | 2016-11-24 | 2016-11-24 | A kind of multicomponent flue gas analyzer interference blanking unit and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960250A (en) * | 2021-09-27 | 2022-01-21 | 山东大学 | Mixed gas detection system and method for shield tunnel |
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| CN101952035A (en) * | 2008-01-14 | 2011-01-19 | 3M创新有限公司 | Multi-functional oxidation catalyst and preparation method |
| CN204964281U (en) * | 2015-09-23 | 2016-01-13 | 汇众翔环保科技河北有限公司 | Flue gas analysis's pretreatment systems |
| CN105259291A (en) * | 2015-11-11 | 2016-01-20 | 中国核动力研究设计院 | Analysis method of fission gas |
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2016
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Patent Citations (5)
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| CN1924573A (en) * | 2005-09-02 | 2007-03-07 | 山东华鲁恒升化工股份有限公司 | Gas chromatograph apparatus for detecting gas component with single and double columns switch mode in series |
| CN101952035A (en) * | 2008-01-14 | 2011-01-19 | 3M创新有限公司 | Multi-functional oxidation catalyst and preparation method |
| CN204964281U (en) * | 2015-09-23 | 2016-01-13 | 汇众翔环保科技河北有限公司 | Flue gas analysis's pretreatment systems |
| CN105259291A (en) * | 2015-11-11 | 2016-01-20 | 中国核动力研究设计院 | Analysis method of fission gas |
| CN105675777A (en) * | 2016-01-13 | 2016-06-15 | 国家电网公司 | Flow self-adaptation method and system of gas chromatography apparatus based on multidimensional air passage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113960250A (en) * | 2021-09-27 | 2022-01-21 | 山东大学 | Mixed gas detection system and method for shield tunnel |
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