CN113652454B - High-efficiency alcohol preparation process by industrial tail gas fermentation - Google Patents
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- CN113652454B CN113652454B CN202110781907.6A CN202110781907A CN113652454B CN 113652454 B CN113652454 B CN 113652454B CN 202110781907 A CN202110781907 A CN 202110781907A CN 113652454 B CN113652454 B CN 113652454B
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
- C12P7/06—Ethanol, i.e. non-beverage
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The application provides a high-efficiency alcohol preparation process by fermenting industrial tail gas, which belongs to the technical field of energy, and comprises the following steps: pressurizing industrial tail gas; the pressurized industrial tail gas is subjected to carbon monoxide concentration through a gas separation membrane to obtain reaction gas; introducing the reaction gas into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash; wherein the aperture of the gas separation membrane is 0.33-0.35 nm. The process can raise the concentration of carbon monoxide in industrial tail gas to the target range and realize stable control of the concentration of carbon monoxide, so that the fermentation reaction efficiency is effectively improved, the energy consumption and the cost are reduced, and the operation stability of a reaction system is improved.
Description
Technical Field
The application belongs to the technical field of energy, and particularly relates to a high-efficiency industrial tail gas fermentation alcohol preparation process.
Background
With the growing shortage of global fossil fuels and the increasing environmental pollution, energy and environmental crisis have become major obstacles to sustainable development of human society in the 21 st century. The ethanol is not only a good solvent, but also can be used as a raw material for preparing various chemical products, and because grain ethanol is seriously dependent on agricultural grain crops, the policy of developing 'not competing for grain with people and not competing for land with people' is the direction of developing fuel ethanol in China or even the world, and therefore, the development of non-grain ethanol and biomass ethanol is the development trend of ethanol production in the future. At present, the production cost of non-grain ethanol and biomass ethanol is always high, and the main cost is the raw material.
Biomass ethanol is produced by taking carbon monoxide in industrial tail gas as a carbon source and fermenting the carbon monoxide by microorganisms. The industrial tail gas has wide sources, the active ingredient is carbon monoxide in the industrial tail gas, the content difference of the carbon monoxide is large according to different gas sources, and certain fluctuation exists, so that the reaction efficiency and the stability of the fermentation alcohol production system are influenced. The lower the concentration of carbon monoxide in the raw material gas, the larger the gas amount required by the fermentation reaction, and the larger the design scale of the gas inlet pipeline and the reactor, the investment cost and the operation cost are increased.
Disclosure of Invention
In order to solve the technical problem of fluctuation of carbon monoxide content in industrial tail gas, the application provides a high-efficiency industrial tail gas fermentation alcohol preparation process, which can improve the concentration of carbon monoxide in industrial tail gas to a target range and realize stable control of the concentration of carbon monoxide, thereby effectively improving the fermentation reaction efficiency, reducing the energy consumption and the cost and improving the operation stability of a reaction system.
The application is realized by the following technical scheme:
the application provides a high-efficiency industrial tail gas fermentation alcohol preparation process, which comprises the following steps of:
pressurizing industrial tail gas;
the pressurized industrial tail gas is subjected to carbon monoxide concentration through a gas separation membrane to obtain reaction gas;
introducing the reaction gas into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash;
wherein the aperture of the gas separation membrane is 0.33-0.35 nm.
Optionally, the pressurizing the industrial tail gas specifically includes:
pressurizing the industrial tail gas to 0.5-0.6 MPa.
Optionally, the pressurized industrial tail gas is subjected to carbon monoxide concentration through a gas separation membrane to obtain reaction gas, which specifically comprises the following steps:
and (3) concentrating the pressurized industrial tail gas through a gas separation membrane to obtain reaction gas, wherein the molar concentration of carbon monoxide in the reaction gas is more than or equal to 50%.
Optionally, one side of the gas separation membrane is a concentrating side, the other side of the gas separation membrane is a permeation side, the concentrating side is divided into an air inlet side and a reaction gas side, the industrial tail gas enters the concentrating side from the air inlet side, the reaction gas is gathered on the reaction gas side, and the gas pressure of the permeation side is controlled to be less than or equal to 101kPa.
Optionally, the step of introducing the reaction gas into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash, which specifically comprises the following steps:
and introducing the reaction gas into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash, wherein the temperature of the reaction gas is 29-37 ℃.
Optionally, the industrial tail gas comprises at least one of steel industrial tail gas, biomass synthesis gas, coal gas and petroleum refining tail gas.
Optionally, the gas separation membrane comprises any one of an organic high molecular polymer membrane, an inorganic membrane, a high molecular-inorganic composite membrane and a high molecular-inorganic hybrid membrane.
Optionally, the gas separation membrane comprises a rubbery membrane and a glassy membrane.
Optionally, in the alcohol-containing mash, the alcohol substance includes at least one of ethanol, propanol and butanol.
Optionally, the gas on the permeation side and the fermentation tail gas of the microbial fermentation tank are oxidized by an oxidation furnace.
One or more technical schemes of the application have at least the following technical effects or advantages:
the application relates to a high-efficiency alcohol preparation process by fermenting industrial tail gas, which is characterized in that the industrial tail gas is pressurized, the gas separation rate of a gas separation membrane is improved, the industrial tail gas is subjected to carbon monoxide concentration through the gas separation membrane, and the aperture of the gas separation membrane is 0.33-0.35 nm and is between CO 2 Between the molecular diameters of (0.33 nm) and CO (0.369 nm), the size screening effect is utilized to lead the CO with smaller size in the industrial tail gas 2 And H 2 Selectively permeate CO and N with larger size 2 The method can increase the concentration of carbon monoxide in the industrial tail gas to a target range, realize stable control of the concentration of carbon monoxide, thereby effectively improving the fermentation reaction efficiency, reducing the energy consumption and the cost and improving the operation stability of a reaction system.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a process for producing alcohol by fermenting high-efficiency industrial tail gas;
FIG. 2 is a schematic structural diagram of an alcohol production device by fermenting high-efficiency industrial tail gas.
Detailed Description
The advantages and various effects of the present application will be more clearly apparent from the following detailed description and examples. It will be understood by those skilled in the art that these specific embodiments and examples are intended to illustrate the application, not to limit the application.
Throughout the specification, unless specifically indicated otherwise, the terms used herein should be understood as meaning as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In case of conflict, the present specification will control.
Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present application are commercially available or may be prepared by existing methods.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The technical scheme provided by the application aims to solve the technical problems, and the general idea is as follows:
according to an exemplary embodiment of the present application, there is provided a high efficiency industrial tail gas fermentation alcohol production process, as shown in fig. 1, comprising:
s1, pressurizing industrial tail gas;
s2, concentrating the pressurized industrial tail gas through a gas separation membrane to obtain reaction gas;
s3, introducing the reaction gas into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash;
wherein the aperture of the gas separation membrane is 0.33-0.35 nm.
In the application, the industrial tail gas is pressurized, the gas separation rate of the gas separation membrane is improved, the industrial tail gas is subjected to carbon monoxide concentration through the gas separation membrane, the aperture of the gas separation membrane is 0.33-0.35 nm and is between CO 2 Between the molecular diameters of (0.33 nm) and CO (0.369 nm), the size screening effect is utilized to lead the CO with smaller size in the industrial tail gas 2 And H 2 Selectively permeate CO and N with larger size 2 The method can increase the concentration of carbon monoxide in the industrial tail gas to a target range, realize stable control of the concentration of carbon monoxide, thereby effectively improving the fermentation reaction efficiency, reducing the energy consumption and the cost and improving the operation stability of a reaction system.
As an alternative embodiment, the pressurizing the industrial tail gas specifically includes:
pressurizing the industrial tail gas to 0.5-0.6 MPa.
In the application, the industrial tail gas from which impurities such as oxygen, hydrogen sulfide and the like and liquid water are removed in advance is pressurized to 0.5-0.6 MPa, so that the gas separation rate of the gas separation membrane can be improved, and CO is promoted 2 And H 2 The separation of the gas is forward carried out, so that the CO concentration efficiency is improved, if the pressure of the industrial tail gas is lower than 0.5MPa, the gas separation efficiency is difficult to improve, and if the pressure is too high, the energy consumption of the gas compressor is increased, so that the CO concentration cost is increased.
As an alternative embodiment, the pressurized industrial tail gas is subjected to carbon monoxide concentration through a gas separation membrane to obtain a reaction gas, which specifically comprises:
and (3) concentrating the pressurized industrial tail gas through a gas separation membrane to obtain reaction gas, wherein the molar concentration of carbon monoxide in the reaction gas is more than or equal to 50%.
In the application, CO in industrial tail gas can be separated by a gas separation membrane 2 And H 2 Filtering to raise CO molar concentration in industrial tail gas to over 50% and raise the reaction rate and stability of fermentation to alcohol, and CO concentration lower than 45% is unfavorable for fast fermentation to alcohol.
As an alternative implementation mode, one side of the gas separation membrane is a concentrating side, the other side of the gas separation membrane is a penetrating side, the concentrating side is divided into an air inlet side and a reaction gas side, the industrial tail gas enters the concentrating side from the air inlet side, the reaction gas is gathered on the reaction gas side, and the gas pressure of the penetrating side is controlled to be less than or equal to 101kPa.
In the application, before or during the gas separation, the gas pressure of the permeation side can be controlled to be in a normal pressure or negative pressure state by adopting the vacuumizing equipment, thereby increasing the gas pressure difference at the two sides of the gas separation membrane and further promoting CO 2 And H 2 The filtration proceeds rapidly.
As an alternative embodiment, the reaction gas is introduced into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash, which specifically comprises the following steps:
and introducing the reaction gas into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash, wherein the temperature of the reaction gas is 29-37 ℃.
In the application, the temperature of the reaction gas is controlled to be 29-37 ℃ and is close to the reaction temperature in the microbial fermentation tank, so that the fermentation alcohol production rate can be improved, if the reaction gas temperature is too low, the temperature of a reaction system can be reduced when the reaction gas enters the microbial fermentation tank, the microbial enzyme activity is reduced, the fermentation alcohol production rate is reduced, and the improvement of the production efficiency is not facilitated.
As an alternative embodiment, the industrial tail gas comprises at least one of steel industry tail gas, biomass syngas, coal gas, petroleum refining tail gas.
In the application, industrial tail gas can adopt the waste gas from various sources, and the carbon monoxide in the waste gas is lifted to the target concentration by the process, so that the efficient operation of preparing alcohol by fermentation is satisfied, and the application range is wide.
As an alternative embodiment, the gas separation membrane includes any one of an organic high molecular polymer membrane, an inorganic membrane, a high molecular-inorganic composite membrane, and a high molecular-inorganic hybrid membrane.
As an alternative embodiment, the gas separation membrane comprises a rubbery membrane and a glassy membrane.
In the present application, the gas separation membrane is made of the above known materials, and the components and microstructure of the above known materials are not described in detail herein, only by controlling the pore diameter of the gas separation membrane.
As an alternative embodiment, the alcohol material in the alcohol-containing mash includes at least one of ethanol, propanol, and butanol.
As an alternative embodiment, the permeate side gas and the fermentation tail gas of the microbial fermenter are oxidized by an oxidation oven.
In the present application, the permeate-side gas contains H 2 And a small amount of CO and fermentation tail gas of the microorganism fermentation tank are oxidized by an oxidation furnace, and heat released by oxidation can be recovered to generate steam.
The following will describe in detail a process for producing alcohol by fermenting industrial tail gas with high efficiency according to the present application by referring to examples, comparative examples and experimental data.
As shown in fig. 2, the embodiment of the present application is based on the following means:
the utility model provides a high efficiency industrial tail gas fermentation system alcohol device, includes gas compression device 100, gas compression device 200 and fermentation system alcohol unit 300, establish gas separation membrane 210 in the gas compression device 200, gas separation membrane 210 will gas compression device 200's inner chamber is cut apart into concentrate side 220 and permeate side 230, concentrate side 220 one end through pipeline one 400 with gas compression device 100 is linked together, the other end through pipeline two 500 with fermentation system alcohol unit 300 is linked together, gas separation membrane 210's aperture is 0.33 ~ 0.35nm, gas compression device 100's entry links to each other with industrial tail gas pipe 600.
Optionally, the industrial tail gas pipe 600 is used for conveying industrial tail gas, and a flowmeter 800 is arranged on the industrial tail gas pipe 600.
Optionally, the permeate side 230 of the gas compression apparatus 200 is in communication with an oxidation furnace via conduit three 700.
Optionally, a vacuum pumping device 710 is disposed in the middle of the third pipeline 700.
Optionally, the third pipe 700 is provided with a valve block 720, a pressure detecting device 900 and a component detecting device 1000.
Alternatively, the gas separation membrane 210 may include any one of an organic high molecular polymer membrane, an inorganic membrane, a high molecular-inorganic composite membrane, and a high molecular-inorganic hybrid membrane.
Alternatively, the gas separation membrane 210 includes a rubbery membrane and a glassy membrane.
Optionally, the first pipe 400 is provided with a pressure detecting device 900 and a composition detecting device 1000.
Alternatively, the second pipe 500 is provided with a pressure detecting device 900, a component detecting device 1000, and a flow meter 800.
Optionally, the fermentation alcohol producing unit 300 is a microorganism
And an exhaust pipe 310 is arranged at the top of the microbial fermentation tank.
Examples
The embodiment relates to a high-efficiency industrial tail gas fermentation alcohol preparation process, which comprises the following steps:
(1) The industrial tail gas is pressurized to 0.5 to 0.6MPa by the gas compression apparatus 100.
(2) The pressurized industrial tail gas is subjected to carbon monoxide concentration through a gas separation membrane 210 with the aperture of 0.33-0.35 nm to obtain reaction gas, one side of the gas separation membrane is a concentrating side 220, the other side of the gas separation membrane is a penetrating side 230, the concentrating side 220 is divided into a gas inlet side and a reaction gas side, the industrial tail gas enters the concentrating side 220 from the gas inlet side, the reaction gas is gathered on the reaction gas side, and the gas pressure of the penetrating side 230 is controlled to be less than or equal to 101kPa.
The gas separation membrane 210 is made of polydimethylsiloxane (organic high molecular polymer), and the molar concentration of carbon monoxide in the reaction gas is 50% and the temperature is 37 ℃.
(3) The reaction gas was fed at a flow rate of 600Nm 3 And/min, introducing the mixture into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash.
Based on the above process, the present application provides 2 exemplary embodiments and provides a comparative example, which is different from the embodiments in that:
and directly introducing industrial tail gas into a microbial fermentation tank at the same flow rate to ferment to prepare alcohol, so as to obtain alcohol-containing mash.
In the application, the industrial tail gas adopted in the examples 1, 2 and the comparative example 1 is converter gas of steelworks, and the main chemical compositions are shown in the table 1:
TABLE 1 Main chemical Components and concentrations of Industrial exhaust gas
| Gas species | Concentration of | Molecular diameter/nm |
| CO | 47mol％ | 0.369 |
| H 2 | 0.66mol％ | 0.29 |
| CO 2 | 20mol％ | 0.33 |
| N 2 | 29mol％ | 0.364-0.38 |
| O 2 | 2000ppmv | 0.3467 |
| CH 4 | 100ppm | 0.3758 |
| H 2 S | 30ppm | 0.2623 |
In the present application, the respective process parameters of examples 1, 2 and comparative example 1 are shown in table 2.
Table 2 process parameters of examples 1, 2 and comparative example 1
In Table 2, -50kPa represents a negative pressure of 50kPa.
The CO concentration effects and alcohol production efficiencies of examples 1, 2 and comparative example 1 are shown in table 3.
TABLE 3 concentration effects and alcohol production efficiencies of examples 1 and 2 and comparative example 1
As can be seen from tables 1-3, the embodiments 1 and 2 of the present application can effectively raise the molar concentration of carbon monoxide in the industrial tail gas to 67% or more through the gas separation membrane with the aperture of 0.33-0.35 nm, and compared with the comparative example 1 in which the industrial tail gas is directly used for fermenting to prepare alcohol, the embodiments 1 and 2 have higher concentration of alcohol substances generated by fermentation in the microbial fermentation tank in the same reaction time, i.e. higher alcohol preparation reaction efficiency, which is beneficial to reducing the energy consumption and cost of biomass ethanol preparation and improving the operation stability of the reaction system.
One or more of the technical schemes of the application has at least the following technical effects or advantages:
(1) The application relates to a high-efficiency alcohol preparation process by fermenting industrial tail gas, which is characterized in that the industrial tail gas is pressurized, the gas separation rate of a gas separation membrane is improved, the industrial tail gas is subjected to carbon monoxide concentration through the gas separation membrane, and the aperture of the gas separation membrane is 0.33-0.35 nm and is between CO 2 Between the molecular diameters of (0.33 nm) and CO (0.369 nm), the size screening effect is utilized to lead the CO with smaller size in the industrial tail gas 2 And H 2 Selectively permeate CO and N with larger size 2 The catalyst is trapped in the reaction gas, so as to increase the concentration of CO in the reaction gas, and the application can increase the concentration of CO in the industrial tail gasAnd the carbon monoxide concentration is stably controlled within a target range, so that the fermentation reaction efficiency is effectively improved, the energy consumption and the cost are reduced, and the operation stability of a reaction system is improved.
(2) The application relates to a high-efficiency alcohol preparation process by fermenting industrial tail gas, which pressurizes the industrial tail gas to 0.5-0.6 MPa, removes impurities such as oxygen, hydrogen sulfide and the like and liquid water, can also promote the gas separation rate of a gas separation membrane and promote CO 2 And H 2 The separation of the gas is forward carried out, so that the CO concentration efficiency is improved, if the pressure of the industrial tail gas is lower than 0.5MPa, the gas separation efficiency is difficult to improve, and if the pressure is too high, the energy consumption of the gas compressor is increased, so that the CO concentration cost is increased.
Finally, it is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. A high efficiency industrial tail gas fermentation alcohol production process, which is characterized by comprising the following steps:
pressurizing the industrial tail gas to 0.5-0.6 MPa;
the pressurized industrial tail gas is subjected to carbon monoxide concentration through a gas separation membrane to obtain reaction gas, wherein the molar concentration of carbon monoxide in the reaction gas is more than or equal to 50%;
introducing the reaction gas into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash;
wherein the aperture of the gas separation membrane is 0.33-0.35 nm,
the gas separation membrane comprises a gas separation membrane, an industrial tail gas, a reaction gas and a reaction gas, wherein one side of the gas separation membrane is a concentrating side, the other side of the gas separation membrane is a permeation side, the concentrating side is divided into a gas inlet side and a reaction gas side, the industrial tail gas enters the concentrating side from the gas inlet side, the reaction gas is gathered on the reaction gas side, and the gas pressure of the permeation side is controlled to be less than or equal to 101kPa.
2. The process for preparing alcohol by fermenting high-efficiency industrial tail gas according to claim 1, wherein the reaction gas is introduced into a microbial fermentation tank for preparing alcohol by fermentation, and alcohol-containing mash is obtained, and specifically comprises the following steps:
and introducing the reaction gas into a microbial fermentation tank for fermentation to prepare alcohol, so as to obtain alcohol-containing mash, wherein the temperature of the reaction gas is 29-37 ℃.
3. The high efficiency industrial tail gas fermentation process of claim 1, wherein the industrial tail gas comprises at least one of steel industrial tail gas, biomass synthesis gas, coal gas, petroleum refining tail gas.
4. The process for producing alcohol by fermenting high-efficiency industrial tail gas according to claim 1, wherein the gas separation membrane comprises any one of an organic high-molecular polymer membrane, an inorganic membrane, a high-molecular-inorganic composite membrane and a high-molecular-inorganic hybrid membrane.
5. The high efficiency industrial tail gas fermentation process of claim 1, wherein the gas separation membrane comprises a rubbery membrane and a glassy membrane.
6. The high efficiency industrial tail gas fermentation process of claim 1, wherein the alcohol-containing mash comprises at least one of ethanol, propanol and butanol.
7. The high efficiency industrial tail gas fermentation process of claim 1, wherein the permeate side gas and the fermentation tail gas from the microbial fermentor are oxidized by an oxidation furnace.
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| CN109499394A (en) * | 2017-09-15 | 2019-03-22 | 中国科学院过程工程研究所 | A kind of carbon monoxide seperation film and its preparation method and application |
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