JP2013048583A - Method and apparatus for producing bioethanol - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and apparatus for producing bioethanol using paper as a raw material and producing ethanol inexpensively and efficiently.SOLUTION: In the bioethanol production apparatus, the ethanol is inexpensively and efficiently produced from the paper by the bioethanol production apparatus and the production method, in which a cooling part of a heat pump device includes an ethanol recovering unit for cooling/recovering the generated ethanol.

Description

  The present invention relates to a bioethanol production method and production apparatus using an enzymatic method, and more particularly to a bioethanol production method and production apparatus for producing ethanol at low cost and efficiently using paper as a raw material. is there.

  Currently, bioethanol production technology using cellulosic biomass as a raw material is being researched and developed around the world.

  Cellulosic biomass refers to paper, wood, grass, or crop residues. Specifically, waste paper, shredder paper, construction waste, thinned wood, rice straw, bagasse (sugar cane squeezed), corn Stalks and leaves.

  As a method for producing bioethanol produced by fermenting sugar produced from biomass, a concentrated sulfuric acid method, a dilute sulfuric acid method, an enzymatic method, and the like have been developed. In recent years, among these production methods, the enzyme method has attracted attention.

  The enzymatic method is a method in which cellulose and hemicellulose contained in biomass are decomposed by an enzyme to produce a saccharide, and the saccharide is fermented by a fermenting bacterium such as a yeast to produce ethanol.

  Usually, paper, especially printing paper used in offices, exists in a form in which the surface is protected with amylose or calcium carbonate.

  Therefore, in order to enzymatically decompose cellulose, it is necessary to first destroy the surface to expose the cellulose.

  Cellulose is a simple polysaccharide in which glucose is dehydrated and condensed.

  These celluloses have a strong binding force, and in order to hydrolyze this bond with an enzyme, it is necessary to decompose the cellulose structure a little in advance.

  Such a destruction treatment of the paper surface and a structure decomposition treatment of cellulose are called pretreatment.

  As conventional paper pretreatment techniques, dilute sulfuric acid decomposition, steam explosion, ammonia explosion, method using hot water / supercritical water, microbial decomposition, pulverization, chemical treatment and the like are known.

  In the case of waste including waste paper, simple pretreatment that does not depend on chemicals such as acid and alkali, high temperature, and high pressure is preferable. For example, shredding or mixing to loosen fibers by shredding or mixing. Is preferred.

  The treated biomass is decomposed by an enzyme, and the temperature, pH, reaction time, etc. of this enzymatic decomposition reaction are adjusted according to the characteristics and performance of the enzyme.

  Since the elementary decomposition reaction rate increases as the temperature increases, the reaction operation temperature is the heat resistant temperature of the enzyme, and is generally 40 to 60 ° C.

  When cellulose is hydrolyzed by an enzyme, glucose is produced, and when hemicellulose is hydrolyzed by an enzyme, glucose, xylose, mannose and the like are produced.

  And fermenting bacteria are added to the solution containing the saccharide obtained by the enzymatic decomposition reaction of cellulose and hemicellulose, and the saccharide is fermented to produce ethanol.

  In general, the optimum fermentation temperature for ethanol is 40 ° C. or lower, and at temperatures higher than this, the fermenting bacteria are killed and the fermentation does not proceed.

  The concentration of the ethanol-containing solution produced by such a method is set to about a dozen percent or less, but if it exceeds about 10%, it will adversely affect the enzyme and yeast and cause a decrease in production efficiency. It is.

  By concentrating and dehydrating the ethanol solution generated by the fermentation, absolute ethanol can be obtained.

  In general, for the concentration and dehydration of a solution containing ethanol, a process combining distillation and PSA (Pressure Swing Adsorption) or a process combining distillation and membrane separation is employed.

  PSA is a system in which water is adsorbed on an adsorbent such as zeolite (molecular sieve) by repeating pressurization and decompression.

  By the way, in the enzyme method described above, when enzymatically decomposing cellulose and hemicellulose, the decomposition product glucose becomes a reaction inhibitor of enzymatic degradation.

  Therefore, as the enzymatic decomposition reaction progresses and the glucose concentration in the solution increases, the reaction rate decreases, and eventually the reaction does not proceed further when a certain glucose concentration is reached.

  In order to solve such a problem, generally, a method called a simultaneous saccharification and fermentation method in which enzymatic decomposition and ethanol fermentation simultaneously proceed in one reaction tank is used (for example, see Patent Document 1). .

  Note that saccharification is a process for producing sugars such as glucose by enzymatic degradation of cellulose and hemicellulose.

  This simultaneous saccharification and fermentation method is a method as described below.

  First, waste paper or the like is pretreated, put into a reaction tank, and then an enzyme-decomposing reaction is advanced by adding a medium containing the enzyme.

  Solid-liquid separation is performed when the enzymatic decomposition reaction proceeds to some extent.

  After separation, fermenting bacteria are put into the reaction tank.

  Then, since the fermenting bacteria convert glucose produced by the enzymatic decomposition reaction into ethanol, the glucose concentration is lowered and the reaction inhibition factor is decreased, so that the enzymatic decomposition reaction further proceeds and the production of ethanol also proceeds.

  Alternatively, ethanol production may be performed by adding enzymes and fermenting bacteria from the beginning to shredder paper pretreated in a reaction tank.

  In the pretreatment step, known methods such as dilute sulfuric acid decomposition, steam explosion, ammonia explosion, method using hot water / supercritical water, microbial decomposition, fine pulverization, chemical treatment and the like are used.

  From the above, the plant of the simultaneous simultaneous saccharification and fermentation method is roughly divided into three steps, a pretreatment step such as pulverization, a saccharification / fermentation step, and a distillation / dehydration step.

  In the fine pulverization pretreatment step, the raw material is finely pulverized using a wet disk mill or chemicals.

  This treatment loosens the raw fibers and facilitates saccharification with enzymes.

  When chemicals are used in this process, the process time is usually shortened by heating to increase the chemical reaction rate.

  In the saccharification / fermentation process, the finely pulverized raw material and the fermentation bacterial culture are mixed in the main saccharification / fermentation tank, and the raw material is saccharified by cellulase or hemicellulase produced by filamentous fungi.

  Furthermore, a yeast culture liquid is added to the liquid, and ethanol fermentation is performed. In this step, the temperature must be constant in order to maintain the enzyme reaction and fermentation reaction, and heating or cooling is required.

  In the distillation step, the fermented liquid after the reaction is directly transferred to a primary distillation apparatus and distilled. In this step, heating is performed to the boiling point of ethyl alcohol or higher, and the alcohol is evaporated and then cooled.

  When a higher concentration of ethanol is required, the obtained distillation product may be further produced as a bioethanol of 99.5% or more through a secondary distillation apparatus and a membrane dehydration apparatus.

  As described above, in general, bioethanol production is an apparatus for each process, and heating or cooling is required for each apparatus in each process.

JP 2002-186938 A

  However, in the conventional method, there are heating / cooling steps for each device composed of the steps as described above in the production of bioethanol so far, resulting in a decrease in energy yield. .

  In particular, the pre-treatment process requires excessive heat and materials, and therefore reduces the energy yield.

  The present invention has been made in view of the above circumstances, and an object thereof is to improve efficiency and reduce costs by using an ionic liquid when pretreating a cellulose-containing material.

The bioethanol production apparatus of the present invention comprises:
A housing,
Enzymatic decomposition and fermenter for fermenting saccharides produced by enzymatic decomposition of cellulose contained in paper, elastically supported in the case, and enzymatic decomposition;
A slot for feeding paper into the enzymatic decomposition / fermentor;
A cartridge capable of storing at least one additive in the enzymatic decomposition / fermentor;
Means for allowing the additive contained in the cartridge to be put into the enzymatic decomposition / fermentor, and a rotating tank provided rotatably in the enzymatic decomposition / fermentor;
Water supply means for supplying water into the enzymatic decomposition / fermentor;
A disposal means for disposing of the waste outside the enzymatic decomposition / fermentor;
A heat pump device;
An air supply hose for supplying air from the heat pump device into the rotary tank by a blowing means;
An exhaust hose for discharging the air in the rotating tank to the outside of the enzymatic decomposition / fermentor;
A mounting base to which the heat pump device is fixed;
Control means for controlling each means;
Comprising
The cooling unit of the heat pump device includes ethanol recovery means for cooling and recovering the generated ethanol.

  In the bioethanol production apparatus of the present invention, it is preferable that the heating unit of the heat pump device also serves as a heating means for the enzyme decomposition / fermentor.

  The bioethanol production apparatus of the present invention includes a pre-treatment agent, an enzyme, a fermentative bacterium, and a fermentative fungus activator. Thus, it is preferable that the enzyme can be introduced into the enzymatic decomposition / fermentor.

  In the bioethanol production apparatus of the present invention, the mounting base is preferably equipped with a compressor of a heat pump device, a radiator, a throttle means, a heat absorber, a pipe, a radiator air passage, a heat absorber air passage, and a circulation duct.

  The bioethanol production apparatus of the present invention is preferably formed by tilting the enzyme decomposition / fermenter forward and high.

The method for producing bioethanol of the present invention comprises:
A pretreatment step for decomposing cellulose structure contained in paper;
An enzymatic decomposition step for enzymatically decomposing cellulose contained in the waste paper subjected to structural decomposition treatment in the pretreatment step;
A fermentation process for fermenting the saccharides produced in the enzymatic decomposition process;
And a step of cooling and recovering water vapor containing ethanol produced in the fermentation step in an endothermic part of a heat pump device.

  The method for producing bioethanol of the present invention preferably has an enzyme separation step of separating the enzyme from the solution containing the saccharide produced in the enzyme decomposition step.

  The method for producing bioethanol of the present invention preferably includes a step of heating the enzyme decomposition / fermentor in a heat radiating part of a heat pump device during the enzyme decomposition step and the fermentation step.

  The present invention implements from a pretreatment of raw materials such as shredder paper to ethanol fermentation in a single reaction tank at a low cost and efficiently, and uses a heat exchanger to efficiently perform heating necessary for each step. And a bioethanol production method capable of performing cooling and an apparatus using the same.

1 is an external perspective view of a bioethanol production apparatus according to Embodiment 1 of the present invention. Cross section of the main part of the bioethanol production system Cross section of the main part of the bioethanol production system System diagram of the bioethanol production system Cross section of the main part of the bioethanol production system FIG. 6 is a conceptual diagram of a system of an additive reagent feeder.

  The best mode of the bioethanol production apparatus and production method of the present invention will be described.

  This embodiment is specifically described for better understanding of the gist of the invention, and does not limit the present invention unless otherwise specified.

  In the present invention, the cellulose-containing material to be treated is not particularly limited as long as it contains cellulose. In particular, waste paper such as waste paper or waste including waste paper can be obtained by simple pretreatment only. Since it is suitable for performing the saccharification process by this, it is preferable.

  The waste including waste paper here is, for example, city waste discharged from households, shredder paper that is business waste discharged from the food and beverage industry, offices, printing companies, and the like.

Embodiment FIG. 1 is an external perspective view of a bioethanol production apparatus according to a first embodiment of the present invention,
FIG. 2 is a cross-sectional view of the housing 1 as viewed from the back 1b direction.
3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a conceptual diagram of the system including the configuration of the heat pump device.
FIG. 5 is a sectional view of an essential part of the device,
FIG. 6 is a conceptual diagram of a system of an additive reagent feeder.

  As shown in each figure, a cylindrical enzyme decomposition / fermentation tank 3 elastically supported by a plurality of suspensions 2 is provided inside the casing 1 to suspend vibration during pretreatment, enzyme decomposition, and fermentation. Absorb by 2.

  This will be described with reference to FIGS. 3, 4 and 5.

  Inside the enzymatic decomposition / fermentation tank 3, a cylindrical and horizontal axis type rotary tank 5 that accommodates the shredder paper 4 is rotatably provided and is driven to rotate by a drive motor 6.

  On the front surface of the housing 1, an opening 1a for inserting and removing the shredder paper 4 and a door 7 for opening and closing the shredder paper 4 are provided.

  Similar openings 3 a and 5 b are also provided on the front side of the enzymatic decomposition / fermentation tank 3 and the rotating tank 5, and the opening 3 a of the enzymatic decomposition / fermentation tank 3 is closely connected to the opening 1 a of the housing 1 by the bellows 8. It is connected to.

  The bottom of the enzymatic decomposition / fermenter 3 has a drain port 9 for discharging waste water containing waste, and is connected to a drain valve 10.

  The blower 12 constituting the blowing means is provided so as to be positioned in a corner space formed by the upper surface 1c and the side surface 1d of the housing 1.

  The blower 12 communicates with an air supply duct 20 provided on the outer surface of the enzyme decomposition / fermentor 3, and blows air that has entered from the air supply duct inlet 21 of the air supply duct 20 in the direction of arrow c from the air supply port 14. It supplies in the rotation tank 5.

  Further, an exhaust duct 22 is provided on the outer surface of the enzyme decomposition / fermentation tank 3 so as to communicate with the exhaust port 16 on the side surface of the enzyme decomposition / fermentation tank 3. The exhaust duct 22 passes through the rotary tank 5 and the enzyme decomposition / fermentation tank 3 and is exhausted. The air coming out from the port 16 is led to the exhaust duct outlet 23 as shown by the arrow d.

  At the lower part of the enzymatic decomposition / fermenter 3, a heat absorber air passage 31 for flowing air in the direction of arrow a to a heat absorber 30 comprising a heat exchanger constituting a heat pump device, and a heat radiator 32 similarly comprising a heat exchanger. A heat radiator air passage 33 for flowing air in the direction of the arrow b is arranged in the horizontal direction, and the heat absorber air passage 31 and the heat radiator air passage 33 communicate with each other through a circulation duct 34 and the heat absorber 30 and the heat radiation. The air passing through the vessel 32 flows linearly.

  The heat absorber air passage 31, the radiator air passage 33, and the circulation duct 34 are integrally formed and are fixed to an attachment base 35 in the housing 1.

  The inlet of the heat absorber air passage 31 and the exhaust duct outlet 23 communicate with each other via an exhaust port hose 36 made of a bellows-like stretchable flexible material.

  Similarly, the outlet of the radiator air passage 33 and the blower 12 communicate with each other via an air supply hose 37.

  In addition, an air filter 38 is detachably provided at the inlet portion provided upstream of the heat sink air passage 31 as filter means for removing foreign substances in the air.

  Further, a recovery port 39 and a recovery device 40 for recovering the agglomerated alcohol aqueous solution are provided in a lower portion on the downstream side of the heat absorber air passage 31.

  As shown by the arrow d in FIG. 4, the heated air blown by the blower 12 passes through the air supply duct 20 and enters the rotary tank 5 from the air supply port 14 to heat the rotary tank 5. ing.

  On the other hand, the water vapor containing ethanol generated in the rotary tank 5 is cooled when passing through the heat absorber 30 of the heat sink air passage 31 through the exhaust duct 22 through the exhaust duct 22 and through the recovery port 39. The recovery unit 40 recovers ethanol, and the recovered air passes through the radiator 32 of the radiator air passage 33 via the circulation duct 34 and returns to the blower 12 to circulate. Yes.

  FIG. 4 illustrates a heat pump device for distilling ethanol.

Compressor 41,
And a radiator 32 for radiating the heat of the refrigerant compressed by the compressor 41,
And a throttle means 42 comprising a throttle valve, a capillary tube or the like for reducing the pressure of the high-pressure refrigerant,
Further, the pipe line 43 is circulated so that the refrigerant circulates through the heat absorber 30 from which the refrigerant that has been depressurized to a low pressure takes heat from the surroundings.
Connected with
The refrigerant flows and circulates in the direction of arrow 44 to realize a heat pump cycle.

  FIG. 6 illustrates the configuration of the reagent feeder 60.

A water supply solenoid valve 61 connected to a water supply source;
An inlet 66 connected to the discharge port 68 of the water supply electromagnetic valve;
A plurality of outlets 67 and a cylinder 62 having the outlets 67;
A rotor 63 fitted into the cylinder 62;
A motor 64 for driving the row 63;
A positioning device that detects the rotational position of the rotor 63 and controls the motor 64 so that the inlet 66 of the cylinder 62 and the individual outlets 67 communicate with each other at a rotation angle of the rotor 63 set in advance. A configured rotary valve 65;
at least,
A pretreatment agent container for containing the pretreatment agent;
An enzyme container for containing an enzyme to be introduced during the enzymatic decomposition process;
A fermenting bacteria container that contains the fermenting bacteria to be introduced during the fermentation process, and an activator container that contains an activator for activating the fermenting bacteria when necessary;
A container 69 comprising:
An inlet 70 for introducing water that has passed through the container 69 into the enzymatic decomposition / fermentor 3
Have
A charging device 60 configured by arranging one water supply port in each of these containers;
The individual outlet 67 of the rotary valve 65 and the individual water supply port of the container 69 are respectively connected,
In the pretreatment step, the pretreatment agent is supplied by supplying water to the pretreatment agent container.
In the enzymatic decomposition process, the enzyme is supplied by supplying water to the enzymatic decomposition container,
At the time of the fermentation process, water is supplied to the fermenting bacteria container,
When necessary, the activator is supplied with water to activate the fermenting bacteria,
It is configured to be poured into an enzymatic decomposition / fermentor with water.

  All the operations as described above are collectively controlled by the control means 51.

  About the bioethanol manufacturing apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the shredder paper 4 is put into the enzymatic decomposition / fermenter 3 from the opening 1a in the front surface of the housing 1, and the process proceeds to the next pretreatment step.

  In the pretreatment process, water is supplied until the predetermined water level is reached in the enzymatic decomposition / fermenter 3 with the drain valve 10 closed, and then the rotary valve is set so that the water supply port comes to the pretreatment agent container in the charging device. Set water, feed water into the pretreatment agent container, and pour the pretreatment agent into the enzymatic decomposition / fermentor along with water.

  Thereafter, pretreatment is performed by rotating the shredder paper 4 and the rotating tank 5 containing water by the drive motor 6.

  At this time, a part of water enters the exhaust duct 22, but the exhaust duct 22 has a shape in which the path is lifted upward so that water does not enter the heat absorber 30.

  In the case of waste containing waste paper, simple pretreatment that does not depend on chemicals such as acid and alkali, high temperature, and high pressure is preferable. For example, ionic liquid or etc. is added after shredding and mixed. Therefore, it is preferable to add an ionic liquid or a pretreatment agent as a disaggregation treatment for loosening the fibers.

Examples of the ionic liquid to be used are as follows.
1,3-dimethylimidazolium bistrifluoromethanesulfonylimide 1-ethyl-3-methylimidazolium bistrifluoromethanesulfonylimide 1-ethyl-3-methylimidazolium triflate 1-ethyl-3-methylimidazolium bispentafluoroethane Sulfonylimide 1,3-diethylimidazolium bistrifluoromethanesulfonylimide 1,3-diethylimidazolium triflate 1-butyl-3-ethylimidazolium triflate 1,2-dimethyl-3-ethylimidazolium bistrifluoromethanesulfonylimide 1-butyl-3-methylimidazolium bistrifluoromethanesulfonylimide 1-butyl-3-methylimidazolium triflate 1-isopropyl-3-methyl Imidazolium bistrifluoromethanesulfonylimide 1,2-dimethyl-3-propylimidazolium bistrifluoromethanesulfonylimidepropylmethylpyrrolidinium bistrifluoromethanesulfonylimidepropyltrimethylammonium bistrifluoromethanesulfonylimidemethylpropylpiperidinium bistrifluoromethanesulfonyl Imidobutylpyridinium bistrifluoromethanesulfonylimide In this pretreatment step, it is also possible to increase the pretreatment rate by heating by operating a heat pump.

  After a predetermined time in the pretreatment process, the process proceeds to the next enzymatic decomposition process.

  In the enzymatic decomposition process, water is supplied until the predetermined water level is reached in the enzymatic decomposition / fermenter 3 with the drain valve 10 closed, and then the rotary valve is set so that the water supply port comes to the enzyme agent container in the charging device. Set, feed water into the enzyme container, and pour the enzyme into the fermenter with the enzyme.

  Thereafter, the shredder paper 4 and the rotating tank 5 containing water are rotated by the drive motor 6 to perform the enzyme decomposition treatment.

  At this time, a part of water enters the exhaust duct 22, but the exhaust duct 22 has a shape in which the path is lifted upward so that water does not enter the heat absorber 30.

  In this enzymatic decomposition step, it is also possible to increase the enzymatic decomposition rate by heating by operating a heat pump.

  Proceed to the next fermentation step after a certain time of the enzymatic decomposition step.

  In the fermentation process, first, with the drain valve 10 closed, further water is supplied into the enzymatic decomposition / fermentor 3 until a predetermined water level is reached, and a rotary valve is set so that the water supply port comes to the fermenting bacteria container in the charging device. Then, water is supplied to the enzyme container, and the enzyme is poured into the enzyme decomposition / fermentor together with water.

  Thereafter, the drive motor 6 rotates the rotating tank 5 containing the shredder paper 4 and the washing water to perform the enzyme decomposition reaction.

  The cellulase used is not particularly limited as long as it contains at least endoglucanase, exoglucanase, and β-glucosidase.

  In the enzymatic decomposition step, the amount of cellulase used is preferably set so that the value when measured by the FPU activity measurement method described below is about 3 FPU to 100 FPU with respect to 1 g of the cellulose-containing substance as a substrate. 10 FPU to 30 FPU are more preferable.

  If the amount of cellulase used is too small, the hydrolysis reaction of cellulose does not proceed efficiently, and if it is too large, the cost of cellulase increases and the economic efficiency is impaired.

  The amount of water can be appropriately set so that the slurry containing the cellulose-containing material and the enzyme has a stirrable viscosity.

  The saccharification conditions by usual cellulase can be applied as the reaction conditions for the enzymatic decomposition step.

  For example, commercially available cellulase (trade name: Cellulosin T2, Hankyu Bio Industry, 300 FPU / g protein) is added as 30 FPU to 1 g of shredder paper, that is, 0.1 g of protein as 1 g of shredder paper. it can.

  Moreover, pH 4-6 and the temperature of about 40-60 degreeC are preferable, and about 0.05 mol / L of the mixed solution of potassium tartrate and tartaric acid may be added as a buffering agent, for example.

  In the enzymatic decomposition step, cellulose contained in the cellulose-containing material is saccharified by the action of cellulase, and oligosaccharides such as cellobiose and cellotriose, and soluble sugars such as glucose are generated.

  Thereby, the viscosity of a slurry falls and stirring efficiency improves.

  If the reaction time (residence time) in the enzymatic decomposition step is too short, saccharification of cellulose is not sufficiently performed, and as a result, the yield of the fermentation product to be finally obtained becomes low.

  On the other hand, if the length is too long, the volume of the reaction vessel increases, and the equipment cost and stirring energy increase, resulting in poor economic efficiency.

  Therefore, the reaction time in the enzymatic decomposition step is preferably set to such an extent that most of the cellulose is hydrolyzed into soluble sugar.

  For example, about 10 hours is preferable.

  The composition of the sugar-containing liquid obtained after completion of the enzymatic decomposition step varies depending on the type of cellulose-containing material used as a raw material and the reaction conditions for saccharification, but oligosaccharides such as cellobiose and cellotriose, glucose, and other soluble sugars In addition, inorganic ions (Ca2 +, Mg2 +, Na +, etc.) derived from cellulose-containing materials, insoluble substances such as lignin and hemicellulose, cellulase, and the like can be included.

  After a certain period of enzymatic decomposition, for example, after about 10 hours, the next fermentation process is started.

  In the fermentation process, a rotary valve is set so that the water supply port comes to the fermenting bacterium container in the charging device, and the fermenting bacterium is supplied to the fermenting bacterium container and the fermented bacterium is poured into the enzyme decomposition / fermentor together with water.

  In this way, fermenting bacteria are added, and fermentation using the microorganism is performed using glucose contained in the saccharified solution as a carbon source to obtain bioethanol as a fermentation product. Moreover, activators, such as a culture medium used for fermentation, can also be added as needed.

  The microorganism may be any microorganism as long as alcohol fermentation is performed using glucose as a carbon source.

  If the reaction time (residence time) is too short, saccharification and fermentation will not proceed sufficiently, resulting in a low product yield. Then the economy becomes worse.

  Examples of fermenting bacteria to be added include yeast and zymomonas.

  On the other hand, since the fermentation time varies depending on the input amount, type, and fermentation conditions of the fermenting bacteria, it is preferable to monitor the amount of alcohol recovered as needed.

  In the enzyme decomposition / fermentation process, when the compressor 41 of the heat pump device is operated, the refrigerant is compressed, and the pressure circulates through the radiator 31, the throttle means 42, and the heat absorber 30 by this pressure.

  In the radiator 32, heat is released by the compression of the refrigerant, and in the heat absorber 30, the heat is absorbed by the refrigerant that has been depressurized by the throttle means 42 to become a low pressure.

  At this time, the blower 12 is activated, and the warm air heated by the heat radiation of the radiator 32 is blown into the rotary tank 5 through the supply duct 20 from the supply port 14.

  The rotating tub 5 is rotationally driven by the drive motor 6, and the shredder paper 4 is lifted and dropped by the rotation of the rotating tub 5 and is stirred up and down.

  The warm air blown into the rotary tank 5 takes water vapor containing ethanol when passing through the enzymatic decomposition / fermentation tank 3, and in the state containing ethanol, the exhaust duct 22 passes through the exhaust port 16 of the enzymatic decomposition / fermentation tank 3. The foreign matter such as lint passes through the exhaust hose 36 and passes through the air filter 38 to reach the heat absorber air passage 31.

  When the water vapor containing ethanol passes through the heat absorber 30, sensible heat and latent heat are deprived and aggregated, and an aqueous ethanol solution can be recovered.

  The aqueous ethanol solution agglomerated by the heat absorber 30 is discharged from the recovery port 39 at the bottom to the outside of the apparatus and can be easily recovered by the recovery device 40.

  On the other hand, the air that has passed through this portion enters the radiator air passage 33 through the circulation duct 34, is heated again by the radiator 32 and becomes hot air, passes through the air inlet hose 37 and the air inlet duct 20, and blowers By circulating to 12, the enzymatic decomposition / fermenter 3 can be heated.

  On the other hand, since the aqueous ethanol solution is recovered in this way, the viscosity of the enzymatic decomposition / fermenter 3 is improved, so it is necessary to supply water as needed.

  In this way, by using the heat pump device, the heat absorbed by the heat absorber 30 is recovered by the refrigerant and radiated again by the heat radiator 32, and the amount of heat greater than the energy input to the compressor 41 is input to the enzyme decomposition / fermentor 3. Therefore, the drying time can be shortened and energy saving can be realized.

  As described above, the heat pump device is disposed below the enzyme decomposition / fermenter 3 and is provided on the lower surface side of the enzyme decomposition / fermentor 3. By connecting with the exhaust hose 36, the position of the opening 1a on the front surface of the main body can be increased so that the shredder paper 4 can be easily inserted, and the length of the air supply hose and the exhaust hose can be shortened. Can be configured compactly.

  In the present embodiment, the air inlet hose 37 and the air outlet hose 36 are arranged side by side on the left and right sides of the lower surface of the enzyme decomposition / fermentation tank 3, but are arranged side by side depending on the layout of the heat pump device. May be.

  The present invention enables efficient saccharification and fermentation of paper simultaneously, facilitates assembly during production, and facilitates repair maintenance of the apparatus. Therefore, the biotechnology has excellent durability and reliability. An ethanol production method and an apparatus using the same are provided.

1 Housing 2 Suspension 3 Enzymatic Decomposition / Fermentation Tank 4 Shredder Paper 5 Rotating Tank 6 Drive Motor 7 Door 8 Bellows 9 Drainage Port 10 Drainage Valve 12 Blower 14 Air Inlet 16 Exhaust Port 20 Air Supply Duct 21 Air Supply Duct Entrance 22 Exhaust Duct 23 Exhaust duct inlet 30 Heat absorber 31 Heat absorber air passage 32 Radiator 33 Radiator air passage 34 Circulation duct 35 Mounting base 36 Exhaust port hose 37 Air supply hose 38 Air filter 39 Discharge port 41 Compressor 42 Throttle means 43 Pipe Path 50 recovery device 51 control means 60 input device 61 water supply electromagnetic valve 62 cylinder 63 rotor 64 motor 65 rotary valve 66 inlet 67 outlet 68 protrusion 69 container 70 inlet

Claims (7)

A housing,
Enzymatic decomposition and fermenter for fermenting saccharides produced by enzymatic decomposition of cellulose contained in paper, elastically supported in the case, and enzymatic decomposition;
A slot for feeding paper into the enzymatic decomposition / fermentor;
A cartridge capable of storing at least one additive in the enzymatic decomposition / fermentor;
Means for allowing the additive contained in the cartridge to be put into the enzymatic decomposition / fermentor; and a rotating tank provided rotatably in the enzymatic decomposition / fermentor;
Water supply means for supplying water into the enzymatic decomposition / fermentor;
A disposal means for disposing of the waste outside the enzymatic decomposition / fermentor;
A heat pump device;
An air supply hose for supplying air from the heat pump device into the rotary tank by a blowing means;
An exhaust hose for discharging the air in the rotating tank to the outside of the enzymatic decomposition / fermentor;
A mounting base to which the heat pump device is fixed;
Control means for controlling each means,
A bioethanol production apparatus comprising an ethanol recovery means for cooling and recovering ethanol from which the heat absorption part of the heat pump device is generated.   The bioethanol production apparatus according to claim 1, wherein the heating unit of the heat pump device is a heating means of the enzymatic decomposition / fermentor. The additive is a pretreatment agent, an enzyme, a fermentative bacterium, a fermentative fungus activator,
It has a feeder consisting of four containers that can store each additive,
The bioethanol production apparatus according to claim 1, wherein the biodegradation / fermenter can be independently introduced into the fermentation tank. The mounting base is
Heat pump equipment compressor,
Radiator,
Aperture means,
Heat sink,
Pipeline,
Radiator air path,
A heat sink air duct and a circulation duct;
The bioethanol production apparatus according to claim 1, comprising:   The bioethanol production apparatus according to claim 1, wherein the enzymatic decomposition / fermenter is tilted forward and high. A method for producing bioethanol, wherein the cellulose contained in paper is enzymatically decomposed, and then ethanol is produced by fermenting sugars produced by enzymatic decomposition of the cellulose and hemicellulose,
A pretreatment step for decomposing cellulose structure contained in paper;
A pretreatment step of subjecting the cellulose to a structure decomposition treatment that has undergone a structure decomposition treatment in the pretreatment step;
An enzymatic degradation step for enzymatic degradation of cellulose contained in the paper;
A fermentation process for fermenting the saccharides produced in the enzymatic decomposition process that has undergone a structural decomposition process in the pretreatment process;
And a step of cooling and recovering water vapor containing ethanol produced in the fermentation step in a cooling part of a heat pump device. A method for producing bioethanol, wherein the cellulose contained in paper is enzymatically decomposed, and then ethanol is produced by fermenting sugars produced by enzymatic decomposition of the cellulose and hemicellulose,
A pretreatment step for decomposing cellulose structure contained in paper;
An enzymatic decomposition step of enzymatically decomposing cellulose that has undergone structural decomposition treatment in the pretreatment step;
A fermentation process for fermenting the saccharides produced in the enzymatic decomposition process;
A step of cooling and recovering water vapor containing ethanol produced in the fermentation step in an endothermic part of a heat pump device;
A step of heating the enzyme decomposition / fermentor at the heat dissipating part of the heat pump device during the enzyme decomposition step and the fermentation step;
A bioethanol production method characterized by comprising:

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