CN101875948B - Method for producing fuel ethanol by sugar grass stalk juice - Google Patents

Method for producing fuel ethanol by sugar grass stalk juice Download PDF

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CN101875948B
CN101875948B CN200910082742A CN200910082742A CN101875948B CN 101875948 B CN101875948 B CN 101875948B CN 200910082742 A CN200910082742 A CN 200910082742A CN 200910082742 A CN200910082742 A CN 200910082742A CN 101875948 B CN101875948 B CN 101875948B
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CN101875948A (en
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杨永福
杨戈
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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
    • C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
    • C12M25/16—Particles; Beads; Granular material; Encapsulation
    • C12M25/20—Fluidized bed
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel

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Abstract

The invention relates to a method for producing fuel ethanol by sugar grass stalk juice and a device; the stalk pretreatment, juice modulation, immobilization yeast particles and fluidization quick fermentation new processes are adopted to prepare the fuel ethanol; the fermentation process is continuous, the equipment is advanced, the fermentation speed is rapid, the reaction is full, the output is high, and the ethanol yield is high, no three-waste exhaust exists, secondary utilization is carried out totally, a great amount of investment, labor cost and raw material cost are reduced, the economic benefit is improved obviously, and the production cost is greatly reduced.

Description

The method of producing fuel ethanol by sugar grass stalk juice
Technical field
The present invention relates to a kind of method of utilizing the farm crop stalk juice to produce alcohol fuel, particularly a kind of method of utilizing juice of sugar grass stalks to produce alcohol fuel.
Background technology
Alcohol fuel is meant and can be used as the absolute ethyl alcohol that fuel uses; Alcohol fuel is with denaturing agent; Just become denatured fuel ethanol; Denatured fuel ethanol and gasoline are mixed through certain proportion becomes vehicle-use alcohol gasoline, is a kind of optimum fuel that substitutes and practice thrift gasoline, and it has cheapness, cleaning, environmental protection, safety, advantage such as renewable.Producing alcohol fuel supplies raw materials for vehicle-use alcohol gasoline exactly.
Sweet sorghum is claimed sugared jowar again; Be the mutation of common grain with jowar (sorghum bicolor (L.) Moench), be characterized in fast growth, stalk juice is abundant; Sugar degree is high; And have high resistance to cold and diseases, drought resisting, waterlogging-resistant, salt tolerant alkali, barren-resistant are fit to China's arid and semi-arid area plantation.
The U.S. develops one of alcohol fuel country early in the world, and fuel ethanol production has the history of last 100 years, formally is used for automobile fuel in 1908.Brazil government formulated the alcohol fuel action plan in 1975, and widelyd popularize and be applied to automobile fuel.The Chinese government started " 15 alcohol energy planning " and has formulated national standard in calendar year 2001.Having set up several is the enterprise of raw material production alcohol fuel with corn wheat one-tenthization grain.Using producing fuel ethanol by sugar grass stalk juice, is a new technical field in China, is not strive grain with the people not strive ground with grain, promptly solves energy dilemma, problem of environmental pollution, solves the grain security problem again.
With the technology of producing fuel ethanol by sugar grass stalk juice, after producing ethanol, add a dewatering process more exactly and form with juice of sugar grass stalks.In the past, producing alcoholic acid technology with juice of sugar grass stalks has many shortcomings: 1. the extensive tapping rate that causes of squeezing the juice is low; 2. juice not being cooked modulation causes the ethanol yield low; 3. fermented yeast adds fermenting process with liquid (yeast activated liquid) form, causes yeast and the little sluggish of juice contact area, and the short loss of yeast metabolism life is big.4. zymotechnique divides three sections and carries out (initial stage, mid-term, later stage), cause fermenting speed slow, yield poorly, the ethanol yield is low.
Summary of the invention
Overcome all shortcomings of technology existence in the past, the object of the present invention is to provide a kind of pre-treatment of stem stalk, juice modulation, immobilized yeast particle, fluidization quick fermentation novel process of having adopted.
For achieving the above object, the present invention adopts following technical scheme:
The present invention provides a kind of method that adopts producing fuel ethanol by sugar grass stalk juice, and it comprises the steps: to squeeze the juice, adds fermented yeast, fermentation, distillation and dehydration.Wherein, Said fermented yeast is in the form adding fermenting process with immobilized yeast particle; Said immobilized yeast particle is that mixed solution is processed in the sodium alginate soln and the yeast soln stirring that in the juice that obtains of squeezing the juice, add after sterilizing, and said mixed solution splashes into CaCl after being the uniform speed rotation 2To generate the sodium-alginate particle, promptly obtain immobilized yeast particle in the solution; Wherein, the viscosity of said sodium alginate soln is preferably: HV 500-1000mpas (milli handkerchief second), and yeast soln concentration is preferably: 22-25% (mass percent); Said CaCl 2Strength of solution is preferably: 74% (mass percent), temperature preferably are controlled at 20 ℃.
Further, in the fermentation initial stage, send fresh air to producer; Send fixed yeast ion and fermentation juice to producer simultaneously, adopt pressurized air to stir yeast particle and stir up and down with fermentation juice, fermentating metabolism produces a large amount of ethanol and dioxide gas; And emit heat, dioxide gas with mash through cooling after gas-liquid separation, mash gets into storage wine with dregs case; Gas gets into compressor and sends producer to; Replace the aerodynamic force of air as the producer fermentation reaction by dioxide gas, constantly circulation forms good fluidization fermentation reaction in fermentation body inside.
Preferably, said method comprises the step of the pre-treatment of squeezing the juice, and is to remove branch, the leaf on the sweet sorghum stalk and be wrapped in the epitheca on the stem stalk, the processing of cleaning again.
Said squeezing the juice is with the processing of squeezing the juice of pretreated sweet sorghum stem stalk, makes its melt cinder separate the juice that obtains cleaning.
Further comprising the juice modulation step after the said step of squeezing the juice, is that the juice that cleans is carried out acidifying, dilution, three technologies modulation of interpolation nutritive salt.Said acidifying is that Hydrogen chloride is directly joined in the normal juice, and it is good that the pH value of survey juice makes it reach 4-4.5; Said dilution is to be the normal juice of 74-80% (mass percent) with concentration, and thin up to 25% (volume percent) is best; Said interpolation nutritive salt is with stirring in nitrogen and the magnesium salts adding dilution juice well, and the nitrogen add-on is the 0.15%-0.18% of sugared content in the juice, and the magnesium salts add-on is the 0.05%-0.06% of sugared content in the juice, and said sugared content is 25% of juice total mass.Said nitrogen is for example and without limitation to (NH 4) 2SO 4Or other nitrogens commonly used, magnesium salts is for example and without limitation to MgSO 4Or other magnesium salts commonly used.
Said distillation is that the mash distillation after the fermentation is obtained volume percent is 95% ethanol, above-mentioned gained ethanol dehydration is handled obtained alcohol fuel afterwards.
The present invention also provides a kind of device that adopts producing fuel ethanol by sugar grass stalk juice, comprises that juicer, juice storing unit, immobilized yeast fluidization are fermented into wine with dregs generating unit, double tower distil device and molecular screening dewatering system.Wherein, Said immobilized yeast fluidization is fermented into the wine with dregs generating unit; Comprise fermentation juice reservoir, producer and storage wine with dregs case, described fermentation juice reservoir is provided with a fermentation juice input channel, and is communicated to described producer through one first mash pump and one first mash transport pipe; The top of described producer is provided with ripe mash riser, and described ripe mash riser is communicated to described storage wine with dregs case through a ripe mash output channel; Described fermentation juice reservoir also is communicated to an immobilized yeast Fitz chilsonator through one second mash pump and one second mash transport pipe, and described immobilized yeast Fitz chilsonator is communicated to described producer through a yeast particle transport pipe again.
In the preferable technical scheme; Above producer, be sealedly connected with a steam bubble catcher; Described steam bubble catcher is communicated to a gas-liquid separator through a carbon dioxide condensing discharge line; The liquid output terminal of described gas-liquid separator is communicated to described storage wine with dregs case; The gas output end of described gas-liquid separator is connected with a purifying carbon dioxide device, and described purifying carbon dioxide device is communicated to a voltage stabilizing gas dome through a gas compressor again, and described voltage stabilizing gas dome is provided with a pressurized gas input aperture that is communicated to the bottom of described producer.
The present invention adopts the method for producing fuel ethanol by sugar grass stalk juice to have the following advantages:
1. sweet sorghum stalk is carried out pre-treatment, improve tapping rate;
2. the juice that obtains squeezing the juice carries out special modulation, improves the ethanol yield;
3. fermented yeast fully contacts with juice with the immobilized yeast particle form, makes reaction fierce, rapid, abundant;
4. adopted the immobilized yeast fluidised form to change into that the zymotechnique of wine with dregs producer is continuous, fermenting speed is fast, output is high, the ethanol yield is high;
5. the maximum characteristics of novel process of the present invention's employing are not have the three wastes to discharge, all second stage employ:
Waste water: waste water that the pre-treatment of stem stalk produces, recycle again after precipitation process.The waste liquid that produces in other technological processs all enters methane-generating pit and makes full use of.The useless throw out that produces in the methane-generating pit can be done the fertilizer infertile field and use;
Waste gas: the CO that produces in the fermenting process 2, through bubble trap, condensation comb, the CO of producer 2Send back to producer after cleaner, gas compressor are handled again and do the usefulness of the aerodynamic force of fluidization fermentation;
Waste residue: a large amount of waste residues that the useless branch that the pre-treatment of stem stalk produces, leaf, sheath and the process of squeezing the juice produce all are that the good raw material of making feed makes full use of.
The characteristics that immobilized yeast fluidization of the present invention is fermented into the wine with dregs generating unit are:
1. fermenting speed is fast.Owing to used immobilization particle fluidization zymotechnique; The contact area and the frequency of exposure of yeast and converted mash have been enlarged; Accelerated the katabolism of yeast thalline, got into producer, exported from riser to ripe wine with dregs from virgin material to liquid glucose; Only need 2 hours, improve 10 times more than than syllogic zymotechnique.
2. level of automation is high, occupation area of equipment is little, resource-saving, human-saving.Import, take a breath and all adopt digital control technology to temperature control from raw material, precise control is quick, does not waste raw material, and does not lose time.
3. the alcohol transformation efficiency is high.Beginning to ferment from ventilation, whole process all carries out under the environment of anaerobism sealing, and pollution is seldom arranged, and the alcohol transformation efficiency reaches more than 90%.
Description of drawings
Fig. 1 is the schema of producing fuel ethanol by sugar grass stalk juice in the embodiment of the invention;
Fig. 2 is the structural representation that immobilized yeast fluidization of the present invention is fermented into the wine with dregs generating unit;
Fig. 3 is the two dimensional structure synoptic diagram of the baffle plate of steam bubble catcher.
Embodiment
Below in conjunction with embodiment the present invention is described further, it should be understood that these embodiment only are used for the purpose of illustration, never limit protection scope of the present invention.
Special act one embodiment explains the concrete steps of the inventive method, and its flow process is as shown in Figure 1.
1. the pre-treatment of squeezing the juice: sweet sorghum in the higher time results of its stem stalk sugar accumulative total, is got its stem stalk after gathering, the stem stalk is removed branch, the leaf on the stem stalk and is wrapped in the epitheca on the stem stalk, the processing of cleaning again.Cleaning Wastewater is through the post precipitation recycling, and its waste residue enters the methane-generating pit utilization.
2. squeeze the juice: pretreated sweet sorghum stem stalk is carried out the routine processing of squeezing the juice, can pass through conventional deposition transition afterwards and make its melt cinder separate the juice that obtains cleaning.
3. juice modulation: the juice that squeezing is obtained carries out acidifying, dilution, three technologies modulation of interpolation nutritive salt, to making yeast particle and to carry out zymotechnique all very helpful.
A. acidification: acidifying purpose one is to be the Normal juice sterilization, the 2nd, and be that suitable environment (pH=4-4.5) is created in the yeast growth breeding.Its method is that Hydrogen chloride is directly joined in the normal juice, and it is good that the pH value of survey juice makes it reach 4-4.5;
B. dilution process: with concentration is the normal juice of 74-80% (mass percent), and thin up to 25% (volume percent) is best, and this concentration is the optimum concn of yeast growth growth;
C. add nutritive salt: yeast is bred growth and is required different nutrient contents in different liquid glucoses, in sweet sorghum syrup liquid, needs to increase nitrogen and magnesium salts.Its method is with stirring its usage quantity in nitrogen and the magnesium salts adding dilution juice well: nitrogen is the 0.15%-0.18% of sugared content in the juice; Magnesium salts is the 0.05%-0.06% of sugared content in the juice, and said sugared content is 25% of juice total mass; Said nitrogen is (NH 4) 2SO 4, magnesium salts is MgSO 4
4. fermentation: fermenting process of the present invention is fermented in the wine with dregs generating unit in the immobilized yeast fluidization and carries out; In conjunction with shown in Figure 2; It mainly comprises fermentation juice reservoir 1, producer 20 and storage wine with dregs case 14; Described fermentation juice reservoir 1 is provided with a fermentation juice input channel 19; Get in the fermentation juice reservoir 1 for fermentation juice, described fermentation juice reservoir 1 is communicated to described producer 20 through one first mash pump B and one first mash transport pipe 5 again, and the top of described producer 20 is provided with ripe mash riser 4; The bottom is provided with fermented waste fluid relief outlet 10, and described ripe mash riser 4 is communicated to described storage wine with dregs case 14 through a ripe mash output channel 17.
Different with prior art, the present invention is to use immobilized yeast particle to realize fermenting process.As shown in Figure 2; Described fermentation juice reservoir 1 also is communicated to an immobilized yeast Fitz chilsonator 2 through one second mash pump A and one second mash transport pipe 5 ', and described immobilized yeast Fitz chilsonator 2 is communicated to described producer 20 through a yeast particle transport pipe 6 again.Described immobilized yeast Fitz chilsonator 2 is prior aries; Be in by fermentation juice reservoir 1, to carry sodium alginate soln (HV 500-1000mpas) and the yeast soln (mass percent is 22-25%) after adding sterilization in the juice of coming; And stir and process mixed solution, again mixed solution is input to a barrel formula ion continuously and gets rid of in the dish, be the uniform speed rotation; Because the viscosity of mixing liquid; Make liquid sentence certain LV along plate edge, intermittently fly away from and get rid of dish, the mass percent that falls into the bottom along the bucket wall is 74% CaCl 2In the solution (20 ℃), very fast response generates sodium-alginate particle, i.e. immobilized yeast particle.
Described fermentation juice and immobilized yeast particle one get in the producer 20 and are in contact with one another, and fermentation has just begun, and fermenting process produces a large amount of ethanol and dioxide gas, and emits heat.Dioxide gas and heat are constantly assembled, and cause producer 20 internal pressures and temperature to rise gradually.After the pressure in the producer 20 reaches certain value; Dioxide gas will get into the steam of ripe mash and be sealedly connected in the steam bubble catcher 3 of producer 20 tops; Has a baffle plate 7 in the described steam bubble catcher 3; Offer most pores 71 (as shown in Figure 3) on the baffle plate 7, pass through with supplied gas, and outside liquid and fixed residue be isolated in.Described steam bubble catcher 3 is communicated to a gas-liquid separator 15 through a carbon dioxide condensing discharge line 18 again; Ripe mash is separated in gas-liquid separator 15; Get in the described storage wine with dregs case 14 from the liquid output terminal of described gas-liquid separator 15 and to be collected; And dioxide gas is separated from the gas output end of described gas-liquid separator 15, gets into a purifying carbon dioxide device 13.Through the dioxide gas after purifying again through the pressurization of a gas compressor 11; Get in the voltage stabilizing gas dome 9; After voltage stabilizing gas dome 9 internal pressures reach set(ting)value, can get into the bottom of described producer 20 once more through a pressurized gas input aperture 8.The dioxide gas that gets into producer 20 bottoms rises under buoyancy, and the mash that drives in the producer 20 together rises, and plays the effect of stirring mash.So; The first mash pump B ceaselessly goes into the fermented juice liquid pump in the producer 20; Immobilized yeast particle also continues to get in the producer 20 from described yeast particle transport pipe 6; And ripe mash also is collected in the liquid output terminal entering storage wine with dregs case 14 of ripe mash output channel 17 and gas-liquid separator 15 constantly, explains that the present invention can reach lasting volume production.
Wherein, The fermented juice fluid power is enough fully to be contacted with immobilized yeast particle in order to make; The present invention is arranged to drum with the inwall of described producer 20; And the incident direction that described mash transport pipe gets into described producer 20 is parallel to the tangent plane direction of producer 20 inwalls, makes the incident mash to make circumferential motion along producer 20 inwalls of drum.And the incident direction that the pressurized gas input aperture 8 of described voltage stabilizing gas dome 9 gets into described producer 20 is parallel to the axis direction incident of producer 20, drives fermentation juice and immobilized yeast particle and rises along axis direction.At this moment; The fluid velocity of tangential and the vector superposed motion of rising in the shape of a spiral of fluid velocity vertically in the producer 20; The constantly motion that goes round and begins again, in moving process, drive ripe mash constantly come-up be gathered in ripe mash riser 4 places and excessive, send constantly in the storage wine with dregs case 14.
What need replenish is; Generating unit of the present invention the unloading phase; Also do not have enough dioxide gass to produce, just need connect an air input channel 21, an air purifier 12 is set on described air input channel 21 then at the place, input aperture of described gas compressor 11 for the mash in the agitation generators 20; Cleaned air passes is pressed into the described voltage stabilizing gas dome 9 from described gas compressor 11; After pressure reached set(ting)value, air promptly got into the bottom of described producer 20 through described pressurized gas input aperture 8, to reach the purpose that stirs mash.In case pass through the input aperture that described purifying carbon dioxide device 13 backs get into described gas compressor 11 and produce dioxide gas in the producer 20, then described air input channel 21 is closed automatically, by CO 2Replace air to do and stir power and fermentation power, be embodied in:
A. drive fermented liquid and rise, the fluid velocity of adjustable fermented liquid, the inlet of control fermented liquid and yeast particle along axis.
B. driving fermented liquid moves in a circle by certain speed along the tangential that wall takes place.Vector superposed by the fluid velocity of tangential and the fluid velocity on the vertical direction, the motion that fermented liquid is risen in the shape of a spiral.
C. dioxide gas can form air film at the immobilized yeast particle surface; Producing buoyancy joins among the spiral motion of fermented liquid; Vanish to the top air film, particle just sinks down into the bottom along wall takes place, and is surrounded by gas again and forms the air film upward movement; Constantly circulation is at the good fluidization fermentation reaction of the inner formation of fermentation body.
In addition, generating unit of the present invention also be provided with can control generator 20 inner mash temperature temperature controller 16, described temperature controller 16 is electrically connected with the detector unit (not giving diagram) that can measure producer 20 inner mash temperature.In described steam bubble catcher 3, mash transport pipe, voltage stabilizing gas dome 9, a flowrate control valve (not giving diagram) is set respectively; Then with described temperature controller 16 respectively with described steam bubble catcher 3, mash transport pipe and voltage stabilizing gas dome 9 in flowrate control valve be electrically connected; Again described temperature controller 16 is electrically connected to the pilot circuit (not giving diagram) of described gas compressor 11, just can have controlled producer 20 inner mash temperature.For example; The general controlled temperature of setting is between 33 ℃～34 ℃; When temperature is higher than 34 ℃; Temperature controller 16 will reduce the transfer rate of mash transport pipe, and improve the output speed of steam bubble catcher 3 and the transfer rate of gas compressor 11 and voltage stabilizing gas dome 9, make cold dioxide gas get into cooling in the producer 20 fast; When temperature was lower than 33 ℃, then control in the other direction was so that temperature remains between 33 ℃～34 ℃.
5. distillation: adopt traditional double tower distil method.Promptly will be fermented in the mash pumping liquid distillation tower with water pump; Open steam valve again and add steam distillation; It is the above alcohol gas of 95% (volume percent) that the cooling water system valve (water coolant remains on below 35 ℃, as be higher than 35 ℃ influence the alcohol gas quality) of opening condensing surface simultaneously promptly obtains concentration.
6. dehydration: adopt traditional molecular screening dewatering.Promptly direct link molecule screens dewatering system in the Distallation systm back; Will be from the above alcohol gas of rectifying tower 95% (volume percent), through getting into the absolute ethyl alcohol (alcohol fuel) that the dehydration of molecular sieve tower obtains 99.8% (mass percent) after the floating device heating again.
7. sub product and utilization thereof:
Distill out the waste liquid behind the ethanol, can produce biogas, be back to Distallation systm and be used as combustion gas.
Stem stalk slag after the sub product distillation of the present invention can be used as ox, sheep feed, producd fibers plate, produce paper pulp etc., and use very extensively.
More than explanation is just illustrative for the purpose of the present invention; And nonrestrictive, those of ordinary skills understand, under the situation of spirit that does not break away from claim and limited and scope; Can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention.

Claims (4)

1. method that adopts producing fuel ethanol by sugar grass stalk juice; It mainly comprises squeezes the juice, adds fermented yeast, fermentation, distillation and dehydration; It is characterized in that: said fermented yeast is in the form adding fermenting process with immobilized yeast particle; Said immobilized yeast particle is sodium alginate soln and the yeast soln that in the juice that obtains of squeezing the juice, adds after sterilizing, and stirs and processes mixed solution, and said mixed solution splashes into CaCl after being the uniform speed rotation 2To generate the sodium-alginate particle, promptly obtain immobilized yeast particle in the solution;
Further, in the fermentation initial stage, send fresh air to producer; Send immobilized yeast particle and fermentation juice to producer simultaneously, adopt pressurized air to stir yeast particle and stir up and down with fermentation juice, fermentating metabolism produces a large amount of ethanol and dioxide gas; And emit heat, dioxide gas with mash through cooling after gas-liquid separation, mash gets into storage wine with dregs case; Gas gets into compressor and sends producer to; Replace the aerodynamic force of air as the producer fermentation reaction by dioxide gas, constantly circulation forms good fluidization fermentation reaction in fermentation body inside;
Further comprising pre-treatment step before the said step of squeezing the juice, is to remove branch, the leaf on the sweet sorghum stalk and be wrapped in the epitheca on the stem stalk, the processing of cleaning again;
Further comprising the juice modulation step after the said step of squeezing the juice, is that juice is carried out acidifying, dilution, three technology modulation of interpolation nutritive salt;
Said acidifying is that Hydrogen chloride is directly joined in the normal juice, and the pH value of surveying juice makes it reach 4-4.5; Said dilution is to be the normal juice of 74-80% with concentration, thin up to 25%; Said interpolation nutritive salt is with stirring in nitrogen and the magnesium salts adding dilution juice well; The nitrogen add-on is the 0.15%-0.18% of sugared content in the juice; The magnesium salts add-on is the 0.05%-0.06% of sugared content in the juice, and said sugared content is 25% of juice total mass.
2. device that adopts producing fuel ethanol by sugar grass stalk juice; It comprises that juicer, juice storing unit, immobilized yeast fluidization are fermented into wine with dregs generating unit, double tower distil device and molecular screening dewatering system; It is characterized in that: said immobilized yeast fluidization is fermented into the wine with dregs generating unit and comprises fermentation juice reservoir, producer and storage wine with dregs case; Described fermentation juice reservoir is provided with a fermentation juice input channel; And be communicated to described producer through one first mash pump and one first mash transport pipe; The top of described producer is provided with ripe mash riser, and described ripe mash riser is communicated to described storage wine with dregs case through a ripe mash output channel; Described fermentation juice reservoir also is communicated to an immobilized yeast Fitz chilsonator through one second mash pump and one second mash transport pipe, and described immobilized yeast Fitz chilsonator is communicated to described producer through a yeast particle transport pipe again;
Above producer, be sealedly connected with a steam bubble catcher; Described steam bubble catcher is communicated to a gas-liquid separator through a carbon dioxide condensing discharge line; The liquid output terminal of described gas-liquid separator is communicated to described storage wine with dregs case; The gas output end of described gas-liquid separator is connected with a purifying carbon dioxide device; Described purifying carbon dioxide device is communicated to a voltage stabilizing gas dome through a gas compressor again, and described voltage stabilizing gas dome is provided with a pressurized gas input aperture that is communicated to the bottom of described producer;
The inwall of described producer is arranged to drum, and the incident direction that described mash transport pipe gets into described producer is parallel to the tangent plane direction of producer inwall;
The incident direction that the pressurized gas input aperture of described voltage stabilizing gas dome gets into described producer is parallel to the axis direction of producer.
3. the device of employing producing fuel ethanol by sugar grass stalk juice according to claim 2; It is characterized in that: the place, input aperture at described gas compressor connects an air input channel, and an air purifier is set on described air input channel.
4. the device of employing producing fuel ethanol by sugar grass stalk juice according to claim 2; It is characterized in that: a flowrate control valve is set respectively in described steam bubble catcher, mash transport pipe, voltage stabilizing gas dome; Flowrate control valve in described steam bubble catcher, mash transport pipe and the voltage stabilizing gas dome is electrically connected to a temperature controller respectively; Described temperature controller is electrically connected with the detector unit that can measure the inner mash temperature of producer, and described temperature controller also is electrically connected to the pilot circuit of described gas compressor.
CN200910082742A 2009-04-28 2009-04-28 Method for producing fuel ethanol by sugar grass stalk juice Expired - Fee Related CN101875948B (en)

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CN101220379A (en) * 2008-02-05 2008-07-16 中国农业大学 Method for producing ethyl alcohol by using sorgo stalk
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CN101139617A (en) * 2006-09-08 2008-03-12 王孟杰 Immobilized yeast fluid-bed fermentation method for preparation of ethanol by sweet Chinese sorghum stalk
WO2008120233A1 (en) * 2007-03-30 2008-10-09 Council Of Scientific & Industrial Research A process for the preparation of ethanol from starch
CN101220379A (en) * 2008-02-05 2008-07-16 中国农业大学 Method for producing ethyl alcohol by using sorgo stalk

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