CN106769978A - Fermentation tank tail gas in-line analyzer - Google Patents
Fermentation tank tail gas in-line analyzer Download PDFInfo
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- CN106769978A CN106769978A CN201710054885.7A CN201710054885A CN106769978A CN 106769978 A CN106769978 A CN 106769978A CN 201710054885 A CN201710054885 A CN 201710054885A CN 106769978 A CN106769978 A CN 106769978A
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- gas
- sensor
- circuit
- fermentation tank
- tail gas
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- 238000000855 fermentation Methods 0.000 title claims abstract description 87
- 230000004151 fermentation Effects 0.000 title claims abstract description 87
- 239000007789 gas Substances 0.000 claims abstract description 179
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 12
- 230000005518 electrochemistry Effects 0.000 claims description 11
- 230000002503 metabolic effect Effects 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 11
- 210000005056 cell body Anatomy 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000007781 pre-processing Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 238000012517 data analytics Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000002028 Biomass Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 229910001868 water Inorganic materials 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000003745 diagnosis Methods 0.000 description 5
- 230000004060 metabolic process Effects 0.000 description 5
- 244000005700 microbiome Species 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 150000002475 indoles Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000010563 solid-state fermentation Methods 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- HRKQOINLCJTGBK-UHFFFAOYSA-N dihydroxidosulfur Chemical compound OSO HRKQOINLCJTGBK-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 238000011169 microbiological contamination Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000037358 bacterial metabolism Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SIKJAQJRHWYJAI-UHFFFAOYSA-N benzopyrrole Natural products C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 230000019522 cellular metabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 238000006911 enzymatic reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 1
- -1 indole heterocyclic compounds Chemical class 0.000 description 1
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine Natural products C1=CC=C2CC=NC2=C1 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
Abstract
The invention discloses a kind of fermentation tank tail gas in-line analyzer, including shell, shell is provided with display screen, shell is provided with air inlet and gas outlet, breather pipe is connected between air inlet and gas outlet, detecting system is provided with shell, circuit control system, sampling system and master system are connected outside shell respectively, detecting system is located on breather pipe, sampling system connecting detection system, detecting system connects circuit control system, circuit control system connects master system, the fermentation tank tail gas of sampling system collection determine the electric signal for obtaining various gases by detecting system, electric signal is sent to master system after being processed by circuit control system.Multifunctional fermentation Tail gas measuring analyzer small volume of the invention, low in energy consumption, reliability is high, cheap, can realize on-line measurement, can realize portable design, it is easy to the advantages of promoting and use on a large scale.
Description
Technical field
The present invention relates to a kind of automatic Zymolysis Equipment and technology controlling and process on-line measuring device, a kind of fermentation is related in particular to
Tank tail gas in-line analyzer.
Background technology
Metabolism（metalsolism）It is the general name of the various chemical reactions of intracellular generation, by catabolism
(catabolism) constituted with two processes of anabolism (anabolism).Catabolism refers to that macromolecular substances drop in cell
Solution produces the process of energy in this process into small-molecule substance.Anabolism refers to that cell utilizes simple small molecule
The process of the complicated macromolecular of material synthesis, wants consumed energy in this process.Either catabolism or anabolism, generation
Thank to approach to be all made up of a series of continuous enzymatic reactions, either aerobic microbiological or anaerobe can all produce
CO2, so CO in microorganism exhaled gas2 The change of content can reflect the change of bacterial metabolism, have in fermentating metabolism regulation and control
Very important meaning.In addition, assimilation of the aerobic microbiological to substrate can be surveyed by its respiratory activity
It is fixed.Can be with the respiratory activity of direct measurement microorganism with oxygen electrode.The principle of measurement is essentially all with suitable microorganism electricity
Pole constitutes with oxygen electrode, using the assimilation oxygen consumption of microorganism, oxygen is measured by measuring the variable quantity of oxygen electrode electric current
Decrement, so as to reach measurement concentration of substrate purpose.
Microorganism during growth metabolism, O2Consumption, CO2Generation can be easier detection, but most of micro- lifes
Thing fermentation after produce gas frowzy, most of these gases with stink be some volatile aldehydes, acids, alcohols,
Esters, amine, thio-alcohol, phenols, thiazole, indoles and furans heterocycles etc..General simple fermentative smell is by several
Ten kinds of above-claimed cpd compositions, complicated fermentative smell is made up of hundreds of kinds of above-claimed cpds.The different main body gas for presenting of concentration
Taste is different, such as the indoles of low concentration shows fragrance, and the indoles of high concentration shows the foul smell of excrement.With using in the market
Environmental gas analyzer（Can only typically determine oxygen, carbon dioxide, carbon monoxide, hydrogen sulfide, formaldehyde, sulfur dioxide etc. 8 ~
10 kinds）Or automobile exhaust analyzer（Survey carbon monoxide, hydrocarbon and oxynitrides composition in exhaust）It is to carry out
Detection.
The useful gas chromatograph-mass spectrometer of fermentation tank of laboratory research（GC-MS）Determine the report of fermentation tail gas composition, but gas
Matter combined instrument is expensive, and needs special sampling device, and its detection process is complicated, the time is more long, it is impossible to sent out for industry
In ferment production on-line checking.At present, fermentation industry automatic control level is low, for example glutamic acid fermentation, and most factories are basic
Detection control parameter has：On-line checking broth temperature, pressure inside the tank, ventilation, extraction flow, continuous stream ammonification water-carrying capacity
Deng.The acidity of offline inspection zymotic fluid, cell concentration, sugared concentration, aminoglutaric acid concentration.People's industry control is carried out according to these parameter values
System, can produce, but process is unstable, and situation is less bright and not in time, and production is mean level.Some factories automatically control
Broth temperature, pressure inside the tank, enter ullage throughput, make these parameter stabilities, improve the level of production.Some factories increase online
Detection parameter, applying electronic computer all obtains gratifying achievement, but to realize that optimized control also has a segment distance.Micro- life
CO will be produced while thing fermentation generation product2With volatile flavor composition, CO is produced2Amount and volatile flavor composition
Amount is closely related with cell metabolism, therefore, the composition and concentration that on-line continuous detection is recorded in fermentation exhaust are critically important and very
It is significant.Metabolic regulation can be carried out to fermentation process by detection, accomplish that " situation is bright, process is steady, production to fermentation process
It is excellent ".
In recent years, Electronic Nose Technology is gradually applied in the quick detection of fermentation process.Electronic Nose Technology has quick, lossless
Advantage, but research is confined to using the detection fermentation of the traditional sensors such as metal oxide sensor, it is difficult to distinguish homologue
Matter, and to the sensitive of humidity in environment, easily cause the deviation of testing result, it is low to gas sensitivities such as mercaptan, amine, and
These gases are often the corrupt characteristic gas of fermentation, and mainly model is relied between metal-oxide gas transducer and reactant
Moral China attraction, this molecular force is intermolecular pole weak force, and sensitivity is poor, and metal oxide gas are passed
Sensor is high in temperature, and after working long hours, response a reference value is susceptible to skew.
The gas sensor array monitoring technology that infrared ray sensor and new gas sensitive are made not only make use of intermolecular
The low force such as Van der Waals force, and metallic bond, polar bond are introduced, with stronger chemical reaction, and by air humidity
Influence is small.The gas sensitive used in the gas sensor array monitoring that new gas sensitive is made has molecular recognition sexual function,
This method sensitivity is high, can distinguish the extremely similar material of chemical property, overcomes the difficult differentiation homologue of common sensor
The shortcoming of matter, can detect the micro change of gas in fermentation process, thus relatively accurately monitoring fermentation process in state and
The change of internal component.The microbial physiology metabolizing parameters obtained by emission data, process optimization has been carried out to fermentation process.
Microbial fermentation ferments and solid state fermentation from form upper liquid separating body, and it is the purebred hair of single bacterium kind that liquid fermentation is most
Ferment, solid state fermentation both can be single bacterium kind pure-blood ferment, can be again multiple bacteria compound fermentation.Its fermentation tail gas feature is not
Together, solid state fermentation tail gas high humidity, may be with solid particles such as dust, thalline spores in tail gas；Liquid fermentation tail gas humidity
Also it is big, but solid particle is not had in tail gas.
The content of the invention
It is high present invention is generally directed to fermentation tank tail gas complicated component, humidity, common Tail gas measuring analyzer and Electronic Nose
Real-time monitoring difficult to realize, proposes that the gas sensor being made based on various infrared ray sensors and new gas sensitive constitutes battle array
The online Tail gas measuring analyzer of fermentation process that row are combined.
To achieve the above object, the present invention uses following technical scheme：Fermentation tank tail gas in-line analyzer, including shell,
Shell is provided with display screen, and shell is provided with air inlet and gas outlet, breather pipe is connected between air inlet and gas outlet, in shell
Detecting system, circuit control system are provided with, sampling system and master system is connected outside shell respectively, detecting system is located at ventilation
Guan Shang, sampling system connecting detection system, detecting system connection circuit control system, circuit control system connection host computer system
System, the fermentation tank tail gas of sampling system collection determine the electric signal for obtaining various gases by detecting system, and electric signal is by circuit
Master system is sent to after control system treatment.
The sampling system includes multiple tail gas sample feeding pipes, and each tail gas sample feeding pipe is all connected with breather pipe, and each tail gas enters
Sample pipe and breather pipe junction are provided with electrical control switching valve.
The detecting system includes infrared C O2Sensor, electrochemistry O2Sensor and Array Semiconductor gas sensing
Device, is sequentially provided with moisture trap, dust filter, silica gel, air pump, flow stabilizing valve, gas flowmeter and triple valve on breather pipe,
Triple valve distinguishes connecting line one and pipeline two, and series connection is provided with infrared C O on pipeline one2Sensor and electrochemistry O2Sensor,
Pipeline two is provided with Array Semiconductor gas sensor, and pipeline one and pipeline two are all connected with gas outlet, being set on moisture trap
There is drainpipe, flow stabilizing valve is provided with blast pipe.
The detecting system includes array infrared gas sensor, Array Semiconductor gas sensor and electrochemistry
O2Sensor, is sequentially provided with moisture trap, array infrared gas sensor, Array Semiconductor gas and passes on breather pipe
Sensor, electrochemistry O2Sensor, flow sensor, temperature sensor, flow regulator and air pump, moisture trap are provided with row
Water pipe.
The Array Semiconductor gas sensor has air chamber structure, and air chamber structure includes gas chamber shell, gas sensing
Lid, sensor array circuitry plate on device, air chamber bottom, air chamber, gas chamber shell connected and covered on air chamber respectively by bolt or screw
Sealing gasket is provided between being covered with air chamber bottom, on gas chamber shell and air chamber, gas chamber shell one end is provided with air inlet pipe joint, the other end
Outlet pipe joint is provided with, gas chamber shell is rectangle structure, cell body is provided with gas chamber shell, cell body two ends are taper, cell body
The uniform aperture offered for installing gas sensor on inside groove bottom surface, sensor array circuitry plate is fixed by fixed screw
In gas chamber shell bottom, gas sensor is welded on sensor array circuitry plate, by close between gas sensor and aperture
Seal is sealed, and the gas production cover of gas sensor is protruded from outside the aperture of sensor.
The array infrared gas sensor has air chamber structure, and air chamber structure includes infrared light supply, variable wavelength
Filter, air inlet, gas outlet, inner chamber plated film air chamber, Temperature Humidity Sensor, optical filter and Infrared Detectors, inner chamber plated film gas
Chamber interior one end is provided with variable wavelength filter, and variable wavelength filter front end is provided with infrared light supply, and the other end is provided with infrared spy
Device is surveyed, Infrared Detectors front end is provided with optical filter, and variable wavelength filter and Infrared Detectors are all between the plated film air chamber of inner chamber
Sealed by O-ring seal, inner chamber plated film air chamber is provided with air inlet and gas outlet, Temperature Humidity Sensor is provided with air inlet.
The circuit control system includes signal pre-processing circuit, microprocessor and communication interface circuit, Signal Pretreatment
Circuit is connected with detecting system, and microprocessor connects display circuit, key circuit, power circuit, clock circuit, storage electricity respectively
Road and communication interface circuit, the output end of signal pre-processing circuit are connected with microprocessor, the input and Wei Chu of display circuit
Reason I/O mouthful of device is connected, and key circuit output end is connected with I/O mouthfuls of microprocessor, clock circuit and storage circuit respectively with
Microprocessor correspondence mouth connection, the output end of power circuit is connected with the power end of microprocessor, communication interface circuit input
It is connected with the communication interface of microprocessor, emission data analytic unit, biomass computing unit and different is installed in microprocessor
Normal alarm unit.
The master system include fermentation tank control unit, fermentation tank detection unit, metabolic regulation system, computer,
Fermentation expert system and abnormal alarm unit, circuit control system connection computer, it is single that computer connects fermentation tank control respectively
Unit, fermentation tank detection unit, fermentation expert system, abnormal alarm unit and metabolic regulation system.
Multifunctional fermentation Tail gas measuring analyzer small volume of the invention, low in energy consumption, reliability be high, cheap, can be with
Realize on-line measurement, portable design can be realized, it is easy to the advantages of promoting and use on a large scale.
Brief description of the drawings
Fig. 1 is structured flowchart of the invention 1.
Fig. 2 is structured flowchart of the invention 2.
Fig. 3 is the air chamber structure schematic diagram of Array Semiconductor gas sensor.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the A-A sectional views of Fig. 3.
Fig. 6 is enlarged diagram at the I of Fig. 5.
Fig. 7 is the air chamber structure schematic diagram of array infrared gas sensor.
Fig. 8 is the B-B sectional views of Fig. 7.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Fermentation tank tail gas in-line analyzer as shown in Fig. 1~Fig. 8, including shell, shell is provided with display screen, on shell
Air inlet and gas outlet are provided with, breather pipe is connected between air inlet and gas outlet, detecting system, circuit control system are provided with shell
System, connects sampling system and master system respectively outside shell, detecting system is located on breather pipe, sampling system connecting detection system
System, detecting system connection circuit control system, circuit control system connection master system, the fermentation tank tail of sampling system collection
Gas determines the electric signal for obtaining various gases by detecting system, and electric signal is sent to host computer after being processed by circuit control system
System.
The sampling system includes multiple tail gas sample feeding pipes, carries out multiple spot to fermentation tank tail gas by tail gas sample feeding pipe and adopts
Sample, each tail gas sample feeding pipe is all connected with breather pipe, and each tail gas sample feeding pipe and breather pipe junction are provided with electrical control switching valve, each
Valve is equipped with tail gas sample feeding pipe, valve is connected with multiplex pulse controller, and valve is carried out by multiplex pulse controller
Automated condtrol.
As shown in figure 1, a kind of detecting system includes infrared C O2Sensor, electrochemistry O2Sensor and Array Semiconductor
Gas sensor, is sequentially provided with moisture trap, dust filter, silica gel, air pump, flow stabilizing valve, gas flowmeter on breather pipe
And triple valve, for solid-state fermenter Tail gas measuring, solid-state fermenter tail gas high humidity may carry dust, thalline in tail gas
The solid particles such as spore, gas-water separation is carried out by moisture trap, and moisture trap is provided with drainpipe, and the water isolated leads to
Drainpipe discharge is crossed, solid particle is filtered by dust filter, the moisture absorption is carried out by silica gel, it is ensured that the tail gas of entrance
Totally, humidity is low, triple valve difference connecting line one and pipeline two, and series connection is provided with infrared C O on pipeline one2Sensor and electricity
Chemical O2Sensor, pipeline two is provided with for detecting in tail gas except CO2And O2The Array Semiconductor gas of other compositions in addition
Body sensor, pipeline one and pipeline two are all connected with gas outlet, and flow stabilizing valve is provided with blast pipe so that enter from multiple tail gas sample feeding pipes
The gas non-interference come, when the gas all come for same tail gas sample feeding pipe on breather pipe just entering sensor determines.
As shown in Fig. 2 another detecting system includes that array infrared gas sensor, Array Semiconductor gas are passed
Sensor and electrochemistry O2Sensor, is sequentially provided with moisture trap, array infrared gas sensor, array on breather pipe
Semiconductor gas sensor, electrochemistry O2Sensor, flow sensor, temperature sensor, flow regulator and air pump, air water point
Drainpipe is provided with from device.
The circuit control system includes signal pre-processing circuit, microprocessor and communication interface circuit, Signal Pretreatment
Circuit is connected with the various sensors in detecting system, microprocessor connect respectively display circuit, key circuit, power circuit,
Clock circuit, storage circuit and communication interface circuit, the output end of signal pre-processing circuit are connected with microprocessor, display circuit
Input be connected with I/O mouthfuls of microprocessor, key circuit output end is connected with I/O mouthfuls of microprocessor, clock circuit and
Storage circuit mouth connection corresponding with microprocessor respectively, the output end of power circuit is connected with the power end of microprocessor, communicates
Interface circuit input is connected with the communication interface of microprocessor, and emission data analytic unit, biology are provided with microprocessor
Amount computing unit and abnormal alarm unit.
The signal output part connection microprocessor of flow sensor and temperature sensor, the regulation of microprocessor connection traffic
Device, Flow-rate adjustment is carried out by microprocessor flow regulator.
The master system include fermentation tank control unit, fermentation tank detection unit, metabolic regulation system, computer,
Fermentation expert system and abnormal alarm unit, circuit control system connection computer, it is single that computer connects fermentation tank control respectively
Unit, fermentation tank detection unit, fermentation expert system, abnormal alarm unit and metabolic regulation system.
Filtering, enhanced processing of the electric signal that multiple sensors are detected in detecting system by signal pre-processing circuit
Afterwards, microprocessor is entered into, and by after the treatment such as multi-parameter Compensation such as temperature and air pressure, by microprocessor through communication interface electricity
Computer, and displays temperature, air pressure, moisture, O on display circuit are arrived in road output2、CO2Deng basal measurements, can also be by button
The basal measurements of each fermentation tank are checked in circuit input detection number on LCDs, and the design causes that instrument has response speed
Degree is fast, data accurately and reliably, repeat stablize, the advantage such as simple and convenient operation and maintenance, realize to fermentation tail gas composition it is continuous online
Measurement.
Fermentation expert system can carry out multiple analysis to the data gathered in computer.Fermentation expert system being capable of basis
The fermentation tank tail gas emissions data of floor data and fermentation tail gas the detecting system collection of fermentation tank, calculates the fermentation of fermentation tank
Tail gas principal component species, judges that the residing operating mode of fermentation is interval by learning-oriented database；Also can be in the online of fermentation expert system
The fermentation tail gas principal component species and detection data of detection are called on the fault diagnosis page, is adjusted immediately by high-speed access data storehouse
Diagnostic result corresponding in database is taken, diagnostic result is shown on the fermentation fault diagnosis result display page；Diagnosis
Result include being detected the Analysis on Fault Diagnosis of fermentation tank, tail gas principal component species, metabolic regulation suggestion；Operator only needs root
Advise according to the metabolic regulation for performing diagnostic result, can the optimization of easily pure technical solve to ferment failure or metabolic regulation ask
Topic.
There is fermentation classification subsystem in the database of expert system of fermenting, database includes huge data volume, Yong Hu
When carrying out each class fermentation, fermentation expert system has self-learning function, can be by the various aggregation of data analysis fermented.Work as user
Using the system for a period of time after, fermentation expert system diagnosis result is accurate higher, and possesses the fermentation of specialty without user
Knowledge, effectively increases operating efficiency.The present invention have that quick, diagnostic result simple to operate is accurate, labour intensity is low and
Diagnostic result in time, is easy to user to adjust rapidly, can in time solve failure of fermenting, it is to avoid hinder the unsafe condition for bringing for some reason
Generation；The DBD database diagnostics function of the fermentation expert system of the fermentation tail gas detecting system can be additionally used in whether the detection of microbiological contamination
Method, can determine whether to be that microbiological contamination or metabolism are easily normal when fermentation tail gas principal component fermented ingredient distinctive for certain bacterium.
As shown in Fig. 3~Fig. 6, the Array Semiconductor gas sensor has air chamber structure, and air chamber structure includes gas
Lid 6, sensor array circuitry plate 8 on room housing 2, gas sensor 3, air chamber bottom 5, air chamber, gas chamber shell 2 by bolt or
Screw connects lid 6 and air chamber bottom 5 on air chamber respectively, is provided with sealing gasket, gas chamber shell 2 on gas chamber shell 2 and air chamber between lid 6
One end is provided with air inlet pipe joint 1, and the other end is provided with outlet pipe joint 4, and gas chamber shell 2 is rectangle structure, is set in gas chamber shell
There is cell body, cell body two ends are taper, the uniform aperture offered for installing gas sensor 3, passes on the inside groove bottom surface of cell body
Sensor array circuit plate 8 is fixed on the bottom of gas chamber shell 2 by fixed screw 7, and gas sensor 3 is welded on sensor array electricity
On road plate 8, sealed by sealing ring 9 between gas sensor 3 and aperture, the gas production cover of gas sensor 3 protrudes from biography
Outside the aperture of sensor；Lid 6 casts aluminium integrated formed structure using totally-enclosed on air chamber, it is ensured that the gas-tight property and screen of inside modules
Covering property, while inwall is provided with silanization coating reduces absorption residual quantity to improve surface smoothness, so as to greatly reduce online inspection
Disturbing factor is surveyed, the degree of accuracy of gas test data is significantly improved.The present invention is especially employed to aldehydes, acids, alcohols, ester
8 classes such as class, amine, thio-alcohol, phenols, indole heterocyclic compounds class nano material semiconductor transducer sensitive respectively, number
Measure is 8 ~ 30.
As shown in Fig. 7~Fig. 8, the array infrared gas sensor has air chamber structure, and air chamber structure includes red
Outer light source 10, variable wavelength filter 11, air inlet 15, gas outlet 13, inner chamber plated film air chamber 12, Temperature Humidity Sensor 16, filter
Mating plate 17 and Infrared Detectors 18, inside one end of inner chamber plated film air chamber 12 are provided with variable wavelength filter 11, and variable wavelength filters
The front end of device 11 is provided with infrared light supply 10, and the other end is provided with Infrared Detectors 18, and the front end of Infrared Detectors 18 is provided with optical filter 17, can
Become wavelength filter 11 and Infrared Detectors 18 all to be sealed by O-ring seal 14 between inner chamber plated film air chamber 12, inner chamber plated film
Air chamber 12 is provided with air inlet 15 and gas outlet 13, and Temperature Humidity Sensor 16 is provided with air inlet 15.
Array infrared gas sensor is CO2, NH3, H2O, SO2The infrared integrated gas sensors of four components, infrared spy
Survey measurement Infrared Detectors and the reference with different specific wavelength optical filters that device is four groups of band difference specific wavelength optical filters red
The integrated detector of external detector.With measurement Infrared Detectors and band respective specific that passband center wavelengths are 4.26 μm of optical filters
The integrated detector of the reference Infrared Detectors of wavelength filter is used to detect CO2Gas；Band passband center wavelengths are 1.515 μm
The measurement Infrared Detectors of optical filter and the integrated detector of the reference Infrared Detectors with respective specific wavelength filter are used for
Detection NH3 gases；Filtered with the measurement Infrared Detectors and band respective specific wavelength that passband center wavelengths are 1.49 μm of optical filters
The integrated detector of the reference Infrared Detectors of piece is used to detect vapor（H2O）；Band passband center wavelengths are 7.61 μm of optical filterings
The measurement Infrared Detectors of piece and the integrated detector of the reference Infrared Detectors with respective specific wavelength filter are used to detect
H2S gases.Array infrared gas sensor can assemble various Infrared Detectors, by infrared absorption principle, can be accurate
Detection CO2、CH4、NH3、H2The concentration of the gases such as O.
Fermentation tail gas detection analysis instrument supports for fermentating metabolism regulation and control provide powerful data, be fermentation quality detect and
Metabolic regulation is there is provided a kind of quick, economy, accurately and beneficial to the detection method of real-time application.Therefore selection fermentation tail gas conduct
Research object has Practical significance, to the more far-reaching value of development of fermentation industry control technology.
Claims (8)
1. fermentation tank tail gas in-line analyzer, it is characterised in that：Including shell, shell is provided with display screen, shell be provided with into
Gas port and gas outlet, connect breather pipe between air inlet and gas outlet, detecting system, circuit control system are provided with shell, outward
Sampling system and master system are connected outside shell respectively, detecting system is located on breather pipe, sampling system connecting detection system, inspection
Examining system connects circuit control system, and circuit control system connection master system, the fermentation tank tail gas of sampling system collection lead to
Cross detecting system and determine the electric signal for obtaining various gases, electric signal is sent to host computer system after being processed by circuit control system
System.
2. fermentation tank tail gas in-line analyzer according to claim 1, it is characterised in that：The sampling system includes multiple
Tail gas sample feeding pipe, each tail gas sample feeding pipe is all connected with breather pipe, and each tail gas sample feeding pipe and breather pipe junction are provided with automatically controlled turn
Change valve.
3. fermentation tank tail gas in-line analyzer according to claim 1, it is characterised in that：The detecting system includes infrared
Line CO2Sensor, electrochemistry O2Sensor and Array Semiconductor gas sensor, be sequentially provided with breather pipe moisture trap,
Dust filter, silica gel, air pump, flow stabilizing valve, gas flowmeter and triple valve, triple valve difference connecting line one and pipeline two,
Series connection is provided with infrared C O on pipeline one2Sensor and electrochemistry O2Sensor, pipeline two is provided with Array Semiconductor gas biography
Sensor, pipeline one and pipeline two are all connected with gas outlet, and moisture trap is provided with drainpipe, and flow stabilizing valve is provided with blast pipe.
4. fermentation tank tail gas in-line analyzer according to claim 1, it is characterised in that：The detecting system includes array
Formula infrared gas sensor, Array Semiconductor gas sensor and electrochemistry O2Sensor, is sequentially provided with gas on breather pipe
Separator, array infrared gas sensor, Array Semiconductor gas sensor, electrochemistry O2Sensor, flow are passed
Sensor, temperature sensor, flow regulator and air pump, moisture trap are provided with drainpipe.
5. the fermentation tank tail gas in-line analyzer according to claim 3 or 4, it is characterised in that：The Array Semiconductor
Gas sensor has air chamber structure, and air chamber structure includes lid on gas chamber shell, gas sensor, air chamber bottom, air chamber, sensing
Device array circuit plate, gas chamber shell connects lid and air chamber bottom, gas chamber shell and air chamber on air chamber respectively by bolt or screw
Sealing gasket is provided between upper lid, gas chamber shell one end is provided with air inlet pipe joint, and the other end is provided with outlet pipe joint, and gas chamber shell is
Rectangle structure, is provided with cell body in gas chamber shell, cell body two ends are taper, are uniformly offered for pacifying on the inside groove bottom surface of cell body
The aperture of gas sensor is filled, sensor array circuitry plate is fixed on gas chamber shell bottom, gas sensor by fixed screw
It is welded on sensor array circuitry plate, is sealed by sealing ring between gas sensor and aperture, gas sensor
Gas production cover is protruded from outside the aperture of sensor.
6. fermentation tank tail gas in-line analyzer according to claim 4, it is characterised in that：The array infrared gas
Sensor has air chamber structure, and air chamber structure includes infrared light supply, variable wavelength filter, air inlet, gas outlet, inner chamber plated film
Air chamber, Temperature Humidity Sensor, optical filter and Infrared Detectors, inner chamber plated film plenum interior one end are provided with variable wavelength filter,
Variable wavelength filter front end is provided with infrared light supply, and the other end is provided with Infrared Detectors, and Infrared Detectors front end is provided with optical filter,
Variable wavelength filter and Infrared Detectors are sealed all between the plated film air chamber of inner chamber by O-ring seal, on the plated film air chamber of inner chamber
Air inlet and gas outlet are provided with, Temperature Humidity Sensor is provided with air inlet.
7. fermentation tank tail gas in-line analyzer according to claim 1, it is characterised in that：The circuit control system includes
Signal pre-processing circuit, microprocessor and communication interface circuit, signal pre-processing circuit are connected with detecting system, microprocessor point
Lian Jie not display circuit, key circuit, power circuit, clock circuit, storage circuit and communication interface circuit, Signal Pretreatment electricity
The output end on road is connected with microprocessor, and the input of display circuit is connected with the I/O of microprocessor mouthfuls, key circuit output end
I/O mouthfuls with microprocessor is connected, the mouth connection corresponding with microprocessor respectively of clock circuit and storage circuit, power circuit it is defeated
Go out end to be connected with the power end of microprocessor, communication interface circuit input is connected with the communication interface of microprocessor, microprocessor
Emission data analytic unit, biomass computing unit and abnormal alarm unit are installed in device.
8. fermentation tank tail gas in-line analyzer according to claim 1, it is characterised in that：The master system includes hair
Fermentation tank control unit, fermentation tank detection unit, metabolic regulation system, computer, fermentation expert system and abnormal alarm unit, electricity
Path control system connects computer, and computer connects fermentation tank control unit, fermentation tank detection unit, fermentation expert system respectively
System, abnormal alarm unit and metabolic regulation system.
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| CN107168141A (en) * | 2017-07-07 | 2017-09-15 | 西安鼎研科技股份有限公司 | A kind of multichannel, the gas analysis instrument of multicomponent synchro measure and method |
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| CN112243457A (en) * | 2018-07-10 | 2021-01-19 | 瓦尤森斯有限公司 | Equipment for monitoring gas molecules in fermentation process |
| CN110927095A (en) * | 2019-12-05 | 2020-03-27 | 成都千嘉科技有限公司 | Gas concentration detection method and system based on spectral energy density |
| CN110927095B (en) * | 2019-12-05 | 2021-05-18 | 成都千嘉科技有限公司 | Gas concentration detection method and system based on spectral energy density |
| CN112940919A (en) * | 2019-12-10 | 2021-06-11 | 中国科学院大连化学物理研究所 | Fermentation process multi-parameter on-line monitoring device |
| CN113406034A (en) * | 2021-05-25 | 2021-09-17 | 南京信息工程大学 | Device with constant-temperature and constant-humidity carbon dioxide sensor and detection method thereof |
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