CN201107318Y - Integration multi-component fermentation tail gas on-line testing apparatus - Google Patents
Integration multi-component fermentation tail gas on-line testing apparatus Download PDFInfo
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- CN201107318Y CN201107318Y CNU2007200308499U CN200720030849U CN201107318Y CN 201107318 Y CN201107318 Y CN 201107318Y CN U2007200308499 U CNU2007200308499 U CN U2007200308499U CN 200720030849 U CN200720030849 U CN 200720030849U CN 201107318 Y CN201107318 Y CN 201107318Y
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Abstract
The utility model discloses an integrated polycomponent ferment tail gas on-line checkout gear which has simple structure and strong practicability, can run on line for a long time, completely solves the problems that the tail gas humidity influences the detection and a gas circuit is easy to be jammed, and can finish the on-line detection of the polycomponent ferment tail gas synchronously. The checkout gear has the structure that a chassis is included, the chassis is divided into at least two spaces which are separate comparatively, wherein, at least a sampling chamber and a detecting chamber are provided; the sampling chamber is provided with a heating apparatus, and the detecting chamber is provided with a gas checkout gear; at least one communicated air hole is arranged between the sampling chamber and the detecting chamber.
Description
Technical field
The utility model discloses a kind of integral multi-components fermented tail gas on-line detection device, belongs to fermentation tail gas detection type manufacturing technology field.
Background technology
In the modern biotechnological process, its detection means is directly depended in the optimization of fermentation and cellular incubation and control to a great extent.Tails assay not only can be optimized bioprocess technology effectively, and can avoid directly detecting microbiological contamination and other adverse effect to sweat that fermentation liquor brings.Therefore the online detection of tail gas more and more comes into one's own in the application of fermentation and field of cell culture.
The tail gas of discharging from the fermentation tank exhausr port in the sweat, temperature is generally at 27～37 ℃, and humidity is 100%, pressure is generally less than 0.05MPa, and principal ingredient is a nitrogen, oxygen, carbon dioxide, according to the fermentation project difference also have escaping gases such as methyl alcohol, ethanol, acetate, acetaldehyde, ammonia.Online detection carbon dioxide and oxygen concentration can calculate respiratory quotient simultaneously, to instructing fermentation optimization control highly significant, so become the main project of the online detection of tail gas.
The gas online detection instrument that is applied to aspects such as chemical industry, metallurgy, oil, coal, building materials, environmental protection, automobile at present is more general, but it is very few to be used for the tail gas online detection instrument of fermentation industry.Fermentation industry adopts following method to the online detection of fermentation tail gas:
Fermentation industry is continued to use existing gas-detecting device always, and these devices are that aspects such as detected parameters, mounting means, equipment cost all are not suitable for fermentation industry, can only be a kind of the substituting that does not have under the instrumentation situation.Along with developing rapidly of biotechnology, the tail gas on-line analysis device that utility model is fit to the fermentation industry special use also just becomes trend of the times.
The infrared analysis detection technique obtains large development in recent years, and has developed the gas sensor of various mature economies, as infrared carbon dioxide sensor, oxygen sensing and methyl alcohol, ethanol, acetate, acetaldehyde, ammoniacal sensor.The sample mode of these gas sensors is diffusion type, and is easy to use, is used widely in a lot of fields, for new way has been opened up in the online detection of fermentation tail gas.But because one of gas sensor application conditions is to guarantee ambient humidity at least less than 95%, dewfall not.As the infrared carbon dioxide sensor, used not beam split infrared principles (measuring the official method of analysis of carbon dioxide), its optical detection parts are very responsive to water vapor, and the existence of water vapor directly influences the accuracy of detection to carbon dioxide, and it was lost efficacy at short notice.And the tail gas humidity that fermentation tank is discharged is 100%, and water vapor has reached capacity, and can't detect as not handling.
Because the tail gas pressure that fermentation is discharged is generally less than 0.05MPa, adopt mechanical type whirlwind aqueous vapor separation method, effect is relatively poor; Pressurized air removes wet method, needs cryogenic refrigeration or molecular sieve, and energy consumption is big, and pollution is arranged, and uses trouble; The semiconductor refrigerating technology dehumidifying, as the exhaust emission testing analyser that has the semiconductor refrigerating water removal body that Chinese patent 02220195.5 is put down in writing, promptly adopt semiconductor refrigerating technology substitute medium compression refrigeration dehumidifying, solve the engine exhaust emission test, but the equipment complexity, the cost height; Though, also adsorbed the valuable gases that needs detect simultaneously, as carbon dioxide with the part moisture of adsorbents such as activated charcoal in can absorption tail gas; Membrane filtration technique, Ventilation Rate is low, causes to detect to lag behind, and film easily stops up, and needs often cleaning.
To the fermentation tail gas dehumidifying best approach is to adopt electrical heating.Prior art generally is that gas is carried out heat treated separately to the electrical heating dehumanization method of gas, is about to gas and passes through electrical heating elements in closed container, and gas heating to uniform temperature, is sent into pick-up unit by pipeline again.Though this method is effective, but still can not tackle the problem at its root.Because pick-up unit and gas-heating apparatus non-integral, between have the temperature difference, heated gas in being delivered to the process of pick-up unit in case meet cold still can dewfall, thereby influenced online detection.
Another problem of prior art is that gas circuit is easily blocked.The online detection instrument that is used for fermentation tail gas at present all adopts pipeline transportation sample gas.Because often carry viscous drop in the fermentation tail gas, these goos can be attached on the tube wall in the course of time.And escape liquid (being fermentation liquor overflows from the exhausr port of fermentation tank) during the fermentation and can not avoid fully.These situations all can cause gas circuit to be blocked, and the said equipment need be made regular check on, clears up and change for this reason.
Summary of the invention
At the deficiencies in the prior art, the utility model provides a kind of simple in structure, practical, integral multi-components fermented tail gas on-line detection device of on-line operation for a long time, thoroughly solve influence and the gas circuit easy blockage problem of tail gas humidity, and can finish the multi-component online detection of tail gas simultaneously detecting.
For above-mentioned utility model purpose, the technical solution adopted in the utility model is:
A kind of integral multi-components fermented tail gas on-line detection device, it comprises cabinet, and described cabinet is separated at least two relatively independent spaces, and wherein sampler chamber and sensing chamber have one respectively at least; Heating arrangement is installed in sampler chamber, is provided with gas-detecting device in the sensing chamber; Has a pore that communicates at least between sampler chamber and the sensing chamber.
Heating arrangement in the described sampler chamber can be electric heater unit or the inner coil pipe heating arrangement that is connected with thermal medium.
Described electric heater unit is to have the ribbon heater/Electric radiant Heating Film/sheet/piece of automatic control/limit/constant temperature function or have at least a in the Electric radiant Heating Film, heating wire, electric heating piece, electrothermal tube of automatic temperature control.Electric radiant Heating Film/sheet have band from limit temperature function and not with this function.
Described ribbon heater is convenient to crooked twine or keep flat for the band shield sheath is flat soft band shape, have heating, automatic heat preserving, limit temperature from the temp-limiting ribbon heater, evenly be laid in the cabinet sampler chamber.
Also filtrator can be set in the described sampler chamber.
Described sampler chamber below has an outlet at least.
Described gas-detecting device comprises gas sensor, it is connected with signal processing unit, gas sensor is a kind of of carbon dioxide sensor, lambda sensor, methanol sensor, ethanol sensor, acetate sensor, acetaldehyde sensor or ammoniacal sensor, also can be the combination of the sensor.
Described gas sensor is positioned at the pore place of sensing chamber's one side.
Mentality of designing of the present utility model is that the centralized procurement sample is an one with detecting, and the sampling casing is carried out the integral body heating, makes it reach identical with tail gas or slightly high temperature.General fermentation temperature (also being exhaust temperature) so make the sampling spin manifold temperature greater than 38 ℃, can satisfy the requirement of detection to humidity 27～37.Adopt the integral structure of this programme, removed the connecting line between sampling and the detection, when carrying mucus in the tail gas or escaping liquid, can discharge from the outlet of lower end, do not influence normal detection, fundamentally solved the gas circuit blocking problem, reach really non-maintaining.
Technical solutions of the utility model have proposed requirement to the sampling section heating-up temperature, hang down excessively not reach effect on moisture extraction, and the too high operate as normal that is unfavorable for gas-detecting device, suitable temperature range is at 38-45 ℃.The best approach is to adopt the flexible electric heating material of the automatic control/limit/constant temperature function with PTC effect, as ribbon heater/film/sheet etc.Above-mentioned thermo electric material energising back resistance can raise with temperature and increase, and power and heat radiation reach balance under rated temperature, therefore have the function of volitional check heating-up temperature, need not be equipped with attemperating unit; And thermal inertia is little, homogeneous heating, no high temperature hotspot and the worry of burning, energy-saving safe; Can also block arbitrarily or in certain-length spreading, easy to use.
Adopt other type of heating also can reach effect same.As adopting thermo electric materials such as the Electric radiant Heating Film do not have temperature automatically controlled function, electric heating piece, heating wire, electrothermal tube, just need to increase temperature control equipment.
The beneficial effects of the utility model are as follows:
1, the centralized procurement sample is one with detecting, and to the whole heating of sampling casing, thoroughly solves the influence of tail gas humidity to detecting, for the online detection of fermentation tail gas provides a kind of method.
2, compact conformation, inside do not have pipeline to connect, and solve the gas circuit blockage problem.
3, real non-maintaining, on-line operation for a long time.
4, adopt the flexible electric heating material have from limitting temperature function, need not self-con-tained unit, also do not have temperature control and the negative consequence that causes.
5, finish the online detection of fermentation tail gas various ingredients simultaneously.
6, device is simple, and cost is low, is easy to industrialization, for fermentation industry provides very practical online detection instrument, not only is fit to scientific research institutions, Scientific Research in University Laboratory, also is applicable to industrial fermentation production.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model test section signal processing circuit unit schematic diagram.
1. draft tube among the figure, 2. filtrator, 3. gas outlet, 4. ribbon heater, 5. dividing plate, 6. gas sensor, 7. signal processing unit, 8. cabinet.
Embodiment
Is that the utility model is described in further detail for embodiment below in conjunction with accompanying drawing with fermentation tail gas carbon dioxide, the online detection of oxygen.
Embodiment: cabinet 8 adopts aluminium, dividing plate 5 adopts aluminium sheet, filtrator 2 adopts blade cyclone type water-separating gas filter, ribbon heater 4 is adopted commercially available alternating current 220V power supply, is limit warm type (its surface temperature is not more than 65 ℃) ribbon heater certainly, and gas sensor 6 is not beam split infrared carbon dioxide sensor and electrochemistry oxygen sensor.Signal processing unit 7 comprises power supply, interface circuit, A/D converter, microprocessor, display unit and communication unit.
As shown in Figure 1, dividing plate 5 is divided into two parts of sampler chamber and sensing chamber with cabinet 8.On dividing plate 5, have two pores.Ribbon heater 4 evenly is laid in the sampler chamber.Draft tube 1 one ends link to each other with the fermentation tank exhausr port, and the other end is connected to the filtrator 2 in the sampler chamber, and the gas outlet of filtrator 2 communicates with sampler chamber, and the drainpipe of filtrator 2 links to each other with the gas outlet of sampler chamber.Tail gas enters the sampler chamber in the cabinet 8 through draft tube 1, filtrator 2, the diffusion after on the dividing plate 5 pore enter sensing chamber.Be positioned at the carbon dioxide sensor and the lambda sensor 6 at sensing chamber inner air vent place, respectively carbon dioxide and oxygen concentration signal transformation become electric signal, feed signals processing unit 7.As shown in Figure 2, in signal processing unit 7, signal interface circuit converts digital signal to and send microprocessor unit to A/D converter, handles the back and shows carbon dioxide and oxygen concentration, simultaneously computing machine is delivered in the digital signal communication.
In the present embodiment, filtrator can filtering part tail gas impurity, but the realization of allomeric function be there is no substantial effect.If remove, draft tube directly can be connected with the sampling section of cabinet.
Signal processing unit in the present embodiment can keep or remove according to actual needs, can remove when for example only needing this pick-up unit that electric signal is provided, and also can do corresponding additions and deletions to it.
Adopt dividing plate that sampler chamber and sensing chamber are separated in the present embodiment, also can adopt the mode that cabinet is made into integration to be separated, also can adopt two modes of being integrated of sampler chamber and sensing chamber independently, also can adopt in cabinet the mode of packing sensing chamber separately or sampler chamber.
When need detect the concentration of methyl alcohol, ethanol, acetate, acetaldehyde or ammonia in the fermentation tail gas respectively or simultaneously, gas sensor in the present embodiment 6 can be replaced by a kind of of methyl alcohol, ethanol, acetate, acetaldehyde, ammoniacal sensor or their combination, or comprise sensor array and the polycomponent sensor that detects the above-mentioned gas composition.At this moment need on dividing plate 5, open corresponding pore.
It is pointed out that the foregoing description should not be construed as the restriction to the utility model protection domain.Under the prerequisite that does not break away from the utility model spirit, any type of change that the utility model is made all should fall in the protection domain of the present utility model.
Claims (8)
1, a kind of integral multi-components fermented tail gas on-line detection device, it comprises cabinet, it is characterized in that: described cabinet is separated at least two relatively independent spaces, and wherein sampler chamber and sensing chamber have one respectively at least; Heating arrangement is installed in sampler chamber, is provided with gas-detecting device in the sensing chamber; Has a pore that communicates at least between sampler chamber and the sensing chamber.
2, integral multi-components fermented tail gas on-line detection device according to claim 1 is characterized in that: the heating arrangement in the described sampler chamber can be electric heater unit or the inner coil pipe heating arrangement that is connected with thermal medium.
3, integral multi-components fermented tail gas on-line detection device according to claim 2 is characterized in that: described electric heater unit is to have the ribbon heater/Electric radiant Heating Film/sheet/piece of automatic control/limit/constant temperature function or have at least a in the Electric radiant Heating Film, heating wire, electric heating piece, electrothermal tube of automatic temperature control.
4, integral multi-components fermented tail gas on-line detection device according to claim 3 is characterized in that: described ribbon heater evenly is laid in the cabinet sampler chamber for the flat soft band shape of band shield sheath.
5, integral multi-components fermented tail gas on-line detection device according to claim 1 is characterized in that: also filtrator can be set in the described sampler chamber.
6, integral multi-components fermented tail gas on-line detection device according to claim 1 is characterized in that: described sampler chamber below has an outlet at least.
7, integral multi-components fermented tail gas on-line detection device according to claim 1, it is characterized in that: described gas-detecting device comprises gas sensor, it is connected with signal processing unit, gas sensor is a kind of of carbon dioxide sensor, lambda sensor, methanol sensor, ethanol sensor, acetate sensor, acetaldehyde sensor or ammoniacal sensor, also can be the combination of the sensor.
8, integral multi-components fermented tail gas on-line detection device according to claim 7 is characterized in that: described gas sensor is positioned at the pore place of sensing chamber's one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200308499U CN201107318Y (en) | 2007-11-21 | 2007-11-21 | Integration multi-component fermentation tail gas on-line testing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200308499U CN201107318Y (en) | 2007-11-21 | 2007-11-21 | Integration multi-component fermentation tail gas on-line testing apparatus |
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| CN201107318Y true CN201107318Y (en) | 2008-08-27 |
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| CNU2007200308499U Expired - Fee Related CN201107318Y (en) | 2007-11-21 | 2007-11-21 | Integration multi-component fermentation tail gas on-line testing apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169451B (en) * | 2007-11-21 | 2010-12-01 | 山东省科学院生物研究所 | Integral multi-components fermented tail gas on-line detection device |
| CN103869091A (en) * | 2014-03-28 | 2014-06-18 | 南京工业大学 | Device and method for on-line detection of oxygen and carbon dioxide in biological fermentation tail gas |
| CN109724645A (en) * | 2019-01-07 | 2019-05-07 | 江苏大学 | A kind of portable electric nose system of real-time monitoring gold ear fermentation process state |
-
2007
- 2007-11-21 CN CNU2007200308499U patent/CN201107318Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169451B (en) * | 2007-11-21 | 2010-12-01 | 山东省科学院生物研究所 | Integral multi-components fermented tail gas on-line detection device |
| CN103869091A (en) * | 2014-03-28 | 2014-06-18 | 南京工业大学 | Device and method for on-line detection of oxygen and carbon dioxide in biological fermentation tail gas |
| CN109724645A (en) * | 2019-01-07 | 2019-05-07 | 江苏大学 | A kind of portable electric nose system of real-time monitoring gold ear fermentation process state |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20101121 |