CN110468162A - Once phase-change method prepares the production process and device of alcohol fuel - Google Patents
Once phase-change method prepares the production process and device of alcohol fuel Download PDFInfo
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- CN110468162A CN110468162A CN201910684615.3A CN201910684615A CN110468162A CN 110468162 A CN110468162 A CN 110468162A CN 201910684615 A CN201910684615 A CN 201910684615A CN 110468162 A CN110468162 A CN 110468162A
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 235000019441 ethanol Nutrition 0.000 claims abstract description 110
- 238000004821 distillation Methods 0.000 claims abstract description 30
- 238000005516 engineering process Methods 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 22
- 238000010563 solid-state fermentation Methods 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims description 66
- 230000008569 process Effects 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 23
- 238000000855 fermentation Methods 0.000 claims description 22
- 230000004151 fermentation Effects 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000012510 hollow fiber Substances 0.000 claims description 3
- 241000235342 Saccharomycetes Species 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 239000002028 Biomass Substances 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 229960004756 ethanol Drugs 0.000 description 43
- 239000007788 liquid Substances 0.000 description 14
- 238000005265 energy consumption Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000002551 biofuel Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- -1 silicane Alkane Chemical class 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 229960000935 dehydrated alcohol Drugs 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010533 azeotropic distillation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical compound C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- MWWATHDPGQKSAR-UHFFFAOYSA-N propyne Chemical compound CC#C MWWATHDPGQKSAR-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/12—Bioreactors or fermenters specially adapted for specific uses for producing fuels or solvents
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/16—Solid state fermenters, e.g. for koji production
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/10—Rotating vessel
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/16—Screw conveyor
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M43/00—Combinations of bioreactors or fermenters with other apparatus
- C12M43/02—Bioreactors or fermenters combined with devices for liquid fuel extraction; Biorefineries
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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
- C12P7/08—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The present invention relates to the production technologies that a kind of once phase-change method prepares alcohol fuel, comprising the following steps: (1) solid state fermentation step；(2) solid state distillation step；(3) Steam soak step.Fuel Ethanol Production Cost can be greatly reduced from the various aspects such as energy saving, reduction pollutant emission and saving equipment investment using production technology of the invention, be the sustainable biomass fuel ethyl alcohol production technology of green energy conservation.
Description
Technical field
The invention belongs to biological new energy and high-efficiency energy-saving technology field, more particularly to one kind are logical by raw material of sugar crop
Solid state fermentation, solid state distillation and Steam soak Integration ofTechnology are crossed, overall process only needs the technology of once phase-change preparing fuel ethanol.
Background technique
Under the background that global warming and world energy supplies day are becoming tight, cleaning low carbon development becomes global energy
The pattern general trend of events, bio-fuel ethyl alcohol is renewable with its, environmental-friendly, technology maturation, the synthesis such as easy to use, easy to spread are excellent
Gesture becomes the ideal substitute of fossil fuel.To solve the problems, such as Chinese society's sustainable use energy, country puts into effect a series of
Policy advocates Renewable Energy Development, encourages the production and consumption that expand bio-fuel ethyl alcohol.In September, 2017, national development change
15 departments such as leather committee, National Energy Board, the Ministry of Finance, which combine to print and distribute, " produces and promotes the use of vehicle about bio-fuel ethyl alcohol is expanded
With the embodiment of ethanol petrol ", according to embodiment, the year two thousand twenty is arrived, it is nationwide to promote the use of E10 bio-ethanol gasoline
(+90% gasoline of 10% ethyl alcohol) was calculated with the utilization of capacity in 2017, and production capacity notch is about 12,750,000 tons/year, and fuel ethanol industrial is not
It is huge to carry out development space.
Currently, China's fuel ethanol production technique based on liquid state fermentation, cooperates traditional two-tower rectification technology, rectifying column
For plate column or packed tower.It is generally necessary to which the ethyl alcohol after liquid state fermentation is first passed through flash tank, the coarse ethanol after flash distillation is heated to
45 DEG C or so enter pre-rectifying tower, and different with the boiling point of ethyl alcohol using water, being heated to certain temperature makes its partial gasification, successively mentions
It is dense.Pre-rectifying tower, into main distillation column, further takes off low-boiling heavy distillat generally by solution rectifying to 50wt% or so
It removes.After rectifying to 95.5wt% azeotropic point, ethyl alcohol is produced from tower top or survey line, after condenser is cooled to room temperature, is further taken off
Water is to dehydrated alcohol.Common dewatering includes that transformation molecular sieve adsorption, azeotropic distillation, extraction fractional distillation etc. exist
Shortcomings, entire production technology is complicated, production efficiency is low, energy consumption is high, equipment investment is high, causes final products at high cost.
In terms of solid state fermentation, patent of invention CN102071222A proposes a kind of rotary drum continuous solid-state fermentation device,
It changes conventional solid-state to ferment intermittent production method, realizes the automatic continuous production of solid-state fermentation process.Invention is special
Sharp CN102094045A is directed to the shortcomings that solid material is without mobility, using the structure of cloth screen and rotary type grid, realizes
Distillation proposes the continuous operation of alcohol process in solid-state fermentation material.The above patent of invention is preamble workshop section of the present invention, is mentioned for the present invention
Technique premise is supplied, but there is still a need for using rectifying and pressure swing adsorption method etc. in solid state fermentation preparing fuel ethanol actual production at present
Method prepares alcohol fuel.
According to statistics, during fuel ethanol production, rectifying and dehydration link energy consumption account for the 45% of entire production energy consumption with
On, the needs that main cause is flowed back due to distillation process, the ethyl alcohol vaporized is needed by cooling for reflux, tower top discharging vapour again
Change and enter next section of rectifying column, tower reactor also needs reboiler to provide upflowing vapor to maintain gas-liquid contact.Multiple phase transformation repeatedly
Process needs big energy, while consuming a large amount of cooling waters.Therefore, find that a kind of separative efficiency is high, unit of consuming little energy
Operation replaces distillation operation, just becomes the key that energy conservation object is realized in entire fuel ethanol production.It is squeezed simultaneously in liquid state fermentation
A large amount of BOD waste water are generated in juice waste liquid and the tower bottoms of rectifying, wastewater treatment is difficult and investment is huge.And using Steam soak as generation
The fine and close membrane separation technique of table is the ideal chose instead of rectifying.
Steam soak (Vapor Permeation, abbreviation VP) is with steam feed, and each component steam divides in the mixture
Under the promotion of pressure difference, dissolved in dense film using each component new with the one kind for realizing that mixture separates with the difference of diffusion
Type membrane technology, has both gas separation and the advantages of infiltration evaporation, has that equipment is simple, selectivity is good, single-stage separating degree height, mass transfer
The advantages that rate is big, pollution-free and easy to operate, Yi Fang great, in the industrial circles such as petrochemical industry, medicine, food and environmental protection
It has broad application prospects and market.
Patent of invention CN108083979A proposes to utilize Steam soak water permeable membrane using liquid state fermentation and rectifying as preamble technique
The method that the top of the distillation column or side line alcohol steam azeotropic mixture are dehydrated.The side of patent of invention CN1450166A infiltration evaporation
The feedback inhibition that ethyl alcohol generates fermentation process during method reduction liquid state fermentation, is taken out using vacuum pump and infiltrating and vaporizing membrane
The gaseous state ethyl alcohol of fermentation process prepares dehydrated alcohol through Steam soak dehydration out.Although the above patent is utilized to a certain extent
The method of UF membrane improves the efficiency of ethanol dehydration or fermentation process, but technical process is still based on distillation operation, this
Sugar crop after juicing that be due to liquid state fermentation operation object itself be, it is ethyl alcohol that sugar ferment in liquid, according to steaming
Vapour infiltration technology needs liquid alcohol-aqueous mixtures mutually becoming steam again, is actually equivalent to partial rectification process, therefore with liquid
In fuel ethanol production technique based on state fermentation, Steam soak technology is little using space.And solid state fermentation and distillation by
In needing the ethyl alcohol in steam stripping fermentation material, the steam sheet after stripping can be made whole as gaseous state using Steam soak method
A process remains gaseous state, this is also the basis of once phase-change method separating alcohol technology.
Summary of the invention
Technical problems to be solved by the inivention
The purpose of the present invention is solid state fermentation, solid state distillation and Steam soak technology are combined into the fuel second of complete set
Alcohol production technique, the advantage and Steam soak technology for making full use of steam stripping method to extract ethyl alcohol from solid-state fermentation material are without phase
The characteristics of component separation can be realized in variation, to reach reduction production energy consumption, reduces separation costs, avoids the mesh of environmental pollution
's.
Method for solving technical problem
In view of the above-mentioned problems, the invention proposes production technologies and device that a kind of once phase-change method prepares alcohol fuel.
An embodiment according to the present invention provides the production technology that a kind of once phase-change method prepares alcohol fuel,
It is characterized in that, comprising the following steps: (1) solid state fermentation step；(2) solid state distillation step；(3) Steam soak step.
A kind of embodiment is that the solid state fermentation step includes that saccharomycetes to make fermentation is added after crushing sugar crop.
A kind of embodiment is that the solid state distillation step includes by the Vapor steam and fermentation material of 0.2~0.7MPa
Interior ethyl alcohol contact, is stripped off the mixed vapour of 15~24wt% containing ethyl alcohol.
A kind of embodiment is, the Steam soak step include through alcohol permselective membrane component and inorganic permeable membrane module twice
Steam soak process separating-purifying.
A kind of embodiment is that the mixed vapour is directly entered alcohol permselective membrane component without condensation, is used in film side
The mode of vacuumizing generates motive force, and alcohol vapour is made to penetrate membrane module, the separation process keep vacuum degree 50~
200Pa。
A kind of embodiment is that the Steam soak step includes being forced into the ethyl alcohol after alcohol permselective membrane Steam soak
0.2~0.4MPa carries out dehydrating operations into inorganic permeable membrane separator.
A kind of embodiment is that film is cooled down using cooler through side and vacuumizes while acting on, and holding vacuum degree is 150
~500Pa removes institute's moisture vapor in mixed vapour, does not obtain alcohol fuel after cooling through component.
A kind of embodiment is that the membrane module and permeable membrane module are tubular type, plate or hollow fiber membrane format.
A kind of embodiment is that the alcohol permselective membrane includes to the selective active layer of ethyl alcohol；Described is permeable
Film uses inorganic NaA type molecular screen membrane or MFI-type molecular screen membrane.
An embodiment according to the present invention provides the process units that a kind of once phase-change method prepares alcohol fuel,
Including with lower unit: (1) solid state fermentation unit；(2) solid state distillation unit；(3) Steam soak unit.
Beneficial effects of the present invention
(1) continous way solid state fermentation, solid state distillation and Steam soak technology are combined, makes ethyl alcohol quilt from tunning
It strips final finished process and remains gaseous state, pilot process once phase-change heat loss and cooling-water consumption, compared to tradition
Technique can reduce by 50% or more production energy consumption.
(2) process flow is enormously simplified, it is easy to operate, it is easy to amplify realization industrial applications.
(3) overall process is generated without high concentration juicing waste water and distillation tower reactor waste liquid, green and pollution-free, saves sewage
Processing cost and treatment facility investment.
(4) discharging of solid state distillation tower reactor can be used as feed use, and it is solid that alcohol permselective membrane separate vapour can be used as Secondary-steam heating
State destilling tower material, inorganic water permeable membrane are used as engineering softened water to use through moisture is recyclable, environmentally friendly technique, overall process
It is discharged without " three wastes ".
(5) distillation process is replaced using membrane module, saves rectifying column, the investment of the process units such as pressure-swing absorber and place
It occupies.
In conclusion the present invention can be many-sided substantially from energy saving, reduction pollutant emission and saving equipment investment etc.
Fuel Ethanol Production Cost is reduced, is the sustainable biomass fuel ethyl alcohol production technology of green energy conservation.
From the description of following exemplary embodiment, further characteristic of the invention will become obvious.
Detailed description of the invention
Fig. 1 is the process flow chart for the production decision that once phase-change method prepares alcohol fuel.
Figure label:
The rotary solid-state fermenter of 1-；2- feeding packing auger；3- steam generation facility；4- steam control valve；5- motor and biography
Dynamic device；6- solid state distillation tower；7- discharging auger；8- alcohol permselective membrane component；9- mechanical recompression blower；10- vacuum pump 1；11- steams
Vapour reheater；The inorganic permeable membrane module of 12-；13- plate heat exchanger；14- vacuum pump 2；15- tubular heat exchanger；16- product connects
Closed cans.
Specific embodiment
An embodiment of the disclosure is specifically described below, but the disclosure is not limited to this.
The application provides the production technology that a kind of once phase-change method prepares alcohol fuel, is with solid state fermentation and solid state distillation
Sugar crop is placed in rotary drum fermentor by premise, and by the ethyl alcohol in continuous solid-state destilling tower Stripping fermentation material, obtains
Second alcohol and water mixed vapour, the process separating-purifying of Steam soak twice through alcohol permselective membrane component and inorganic permeable membrane module, finally
The cooling concentration that obtains does not heat transmission through the steam of alcohol permselective membrane in the alcohol fuel of 99.5wt% or more after mechanical recompression
Side steam simultaneously preheats use as secondary heat source.Entire technique is sent out it is characterized in that the continuity and automation produced from solid-state
Mixed vapour is extracted in ferment material does not have phase change, no high-concentration waste water and slops to the overall process for being concentrated into final products
It generates.
The concentration of alcohol of the solid state fermentation post-fermentation material is 4~8wt%, and stripped vapor pressure is 0.2~0.7MPa,
Concentration of alcohol is 15~24wt% in alcohol-water mixed vapour after solid state distillation, the ethyl alcohol enrichment after the infiltration of alcohol permselective membrane component
To 75~90wt%, finally it is greater than 99.5wt% through the inorganic permeable dewatered concentration of alcohol of membrane module.
Alcohol permselective membrane component and permeable membrane module are tubular type, plate or hollow fiber membrane format.Alcohol permselective membrane component is according to purification
It is required that, using 2~8 groups, inorganic permeable membrane module is seeped according to preamble alcohol permselective membrane with active layer material to the difference of ethanol selectivity
The concentration of alcohol appeared is different, using 1~5 group.
Alcohol permselective membrane should include to the selective active layer of ethyl alcohol.Active layer material selective to ethyl alcohol,
The organic material used is dimethyl silicone polymer, poly- trimethyl silicane propine, polyvinyl dimethylsilane, poly- trimethyl silicane
Alkane, polyethylene, polypropylene, or the MFI-type molecular screen membrane using organic inorganic hybridization.Have to the selective active layer of ethyl alcohol
Machine material, which is characterized in that active layer thickness is 10~100 μm.
Water permeable membrane uses inorganic NaA type molecular screen membrane or MFI-type molecular screen membrane.
The mass transfer force of Steam soak process is pressure difference, and alcohol permselective membrane is maintained at 50~200Pa, nothing through side vacuum degree
Machine water permeable membrane is maintained at 150~500Pa through side vacuum degree.
Secondary heat source recycling is not can be used as after mechanical recompression reaches pressure requirements through the steam of alcohol permselective membrane, entirely
Process is generated without high concentration production waste liquid.
Specifically, once phase-change method of the present invention prepare the production technology of alcohol fuel comprising the following specific steps
(1) it is added after crushing sugar crop in rotary solid-state fermenter, yeast liquid is added, ferment certain time
Afterwards, the tunning of 4~8wt% containing ethyl alcohol is added by solid state distillation top of tower by screw feeding device.
The water vapour of (2) 0.2~0.7MPa is passed through from solid state distillation tower bottom, is heated on tower tray to solid-state fermentation material,
Motor drives rotation grid to rotate fermentation material in tower, and lower layer's tower tray is entered after contacting with steam counter-flow, is discharged from discharge port.
(3) steam is contacted with ethyl alcohol in fermentation material, and the mixed vapour of 15~24wt% containing ethyl alcohol is stripped off, straight without condensation
It taps into alcohol permselective membrane component, in film side, use vacuumizes mode and generates motive force, so that alcohol vapour is penetrated membrane module, separates
Process keeps vacuum degree in 50~200Pa.The steam not penetrated leads to after mechanical steam recompression blower improves steam quality
Enter solid state distillation tower bottom to use as secondary heat source.After secondary heat source is stablized, steam inlet valve is suitably turned down, is reduced primary
Steam energy consumption.
(4) concentration of alcohol after alcohol permselective membrane Steam soak is 75~90wt%, 0.2 is forced into using steam blower~
0.4MPa carries out dehydrating operations into inorganic permeable membrane separator, and film is through side using cooler cooling and vacuum pump air pump
Shi Zuoyong generates mass transfer force, keeps vacuum degree in 150~500Pa, institute's moisture vapor in mixed vapour is removed, not thoroughly
It crosses component and obtains the alcohol fuel that concentration is greater than 99.5wt%, the water vapour of transmission recoverable after cooling after cooling.
In the present invention, the concentration of alcohol height generated in solid-state fermentation material is by sugar crop type, fermenting microbe, reaction temperature
The multifactor decisions such as degree.Concentration of alcohol after solid state distillation in steam is determined by the concentration of alcohol in fermentation material.Through alcohol permselective membrane
Steam soak purification after concentration of alcohol by alcohol permselective membrane to the material of the selective active part of ethyl alcohol, the thickness of film and
Membrane module number, form etc. codetermine.
As shown in Figure 1, rotary solid-state fermenter 1 is added with yeast after crushing together for sugar crop, after continuously fermenting, make
With feeding packing auger 2 by tunning cloth to the top of solid state distillation tower 6, the steam that steam generation facility 3 generates is from solid state distillation
6 bottom of tower enters in tower, and grid rotates under the drive of motor and transmission device 5 in tower, make fermentation materials constantly and steam into
Row counter current contacting, the alcohol-water mixed vapour being stripped off are flowed out from tower top, and material handles through 7 discharging post-processing of device and makees after steaming
For feed use.Overhead vapours is directly entered alcohol permselective membrane component 8 and is purified, and under the action of vacuum pump 10, makes alcohol permselective membrane two
Side generates pressure difference, promotes Steam soak process.Do not enter steam after the pressurization of mechanical recompression blower 9 through steam
Reheater carries out reheating to the alcohol vapour of extraction, keeps steam phase, can not be passed through charging strand through steam after exchanging heat
It is used in imperial 2 collets as secondary heat source recycling.Enrichment after vapor permeability alcohol permselective membrane is passed through after steam reheater heats
Inorganic permeable membrane module 12 is further dehydrated.The moisture of transmission recycles after plate heat exchanger 13 is cooling.It does not penetrate
Part is concentration >=99.5wt% alcohol vapour, is extracted out through vacuum pump 14, is produced by entering after the cooling of tubular heat exchanger 15
Product receiving tank 16 obtains final process of alcohol products.
Embodiment
Sugar grass crushed material is added in solid-state fermenter with the yeast mutually fitted, fermentation was delivered to solid state distillation after 20 hours
Top of tower, 0.4MPa steam is passed through into destilling tower, and fermentation material stops discharging after life in 20 minutes, vinasse further processing in tower
It is used as feed.The mixed vapour of the 18wt% containing ethyl alcohol enters alcohol permselective membrane component and Steam soak process occurs, and purifies to
Entering inorganic permeable membrane module dehydration after 75wt% is finished fuels ethyl alcohol.
Industrial applicibility
Display device component and display dress comprising the solidfied material that hardening resin composition through the invention is formed
Setting can be suitble to use in optical field, motor/electronic field.
This embodiment is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (10)
1. the production technology that a kind of once phase-change method prepares alcohol fuel, which comprises the following steps:
(1) solid state fermentation step；
(2) solid state distillation step；
(3) Steam soak step.
2. production technology according to claim 1, wherein the solid state fermentation step includes after crushing sugar crop,
It is directly added into saccharomycete and carries out solid state fermentation.
3. production technology according to any one of claim 1 or 2, wherein the solid state distillation step include by 0.2~
The Vapor steam of 0.7MPa is contacted with ethyl alcohol in fermentation material, and the mixed vapour of 15~24wt% containing ethyl alcohol is stripped off.
4. production technology according to any one of claim 1-3, wherein the Steam soak step includes through alcohol permselective membrane
The process separating-purifying of Steam soak twice of component and inorganic permeable membrane module.
5. production technology according to claim 4, wherein mixed vapour is directly entered alcohol permselective membrane group without condensation
Part, in film side, use vacuumizes mode and generates motive force, and alcohol vapour is made to penetrate membrane module.
6. the production technology according to any one of claim 4-5, wherein the Steam soak step includes will be through saturating alcohol
Ethyl alcohol after film Steam soak is forced into 0.2~0.4MPa, carries out dehydrating operations into inorganic permeable membrane separator.
7. production technology according to claim 6, wherein film is cooled down using cooler through side and vacuumizes while making
With holding vacuum degree removes institute's moisture vapor in mixed vapour in 150~500Pa, is not fired after cooling through component
Expect ethyl alcohol.
8. the production technology according to any one of claim 4-7, wherein the membrane module and permeable membrane module are pipe
Formula, plate or hollow fiber membrane format.
9. production technology according to claim 8, wherein the alcohol permselective membrane includes to the selective work of ethyl alcohol
Property layer；The water permeable membrane uses inorganic NaA type molecular screen membrane or MFI-type molecular screen membrane.
10. the process units that a kind of once phase-change method prepares alcohol fuel, which is characterized in that including with lower unit:
(1) solid state fermentation unit；
(2) solid state distillation unit；
(3) Steam soak unit.
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