JP5140884B2 - High impact crusher for woody biomass crushing and operation method - Google Patents

Description

  The present invention relates to the production of a processed woody biomass product in which cellulose and hemicellulose of woody biomass are hydrolyzed with enzymes to convert them into monosaccharides, and the converted sugars are converted into ethanol or biodegradable plastic with fungi or yeast.

According to Yasuhiro Daisei / Mitsui & Co., Ltd., “Bioethanol forefront” (published by the Industrial Research Council), Japan will be compliant with the Kyoto Protocol and will reduce carbon dioxide emissions by 6% by 2012 based on 1990 There is a need.

As one of the measures, the Ministry of the Environment produced industrially inexpensive ethanol for fuel from carbon-neutral woody biomass to reduce emissions from passenger cars as a part of Biomass Nippon's action, and mixed it with 3% gasoline. It is shown that a scenario has been formulated to achieve full diffusion of E10 fuel in 2020 by mixing 10% with E10 fuel in 10%.

The New Energy and Industrial Technology Development Organization (NEDO), an independent administrative agency, has been carrying out "Development of high-efficiency biomass conversion technology" from 2001 to 2005 in order to develop technology for producing ethanol for fuel from woody biomass. (See NEDO report barcode 100000836).

Here, the cellulose in the woody biomass is converted to sugar using a hydrolysis method with concentrated sulfuric acid.

There are problems such as low recovery rate of sugar solution, development of acid-resistant / salt-resistant yeast, and the need to treat concentrated sulfuric acid waste solution. Not established.

As a method for solving the problem of the sulfuric acid hydrolysis method, there is an ethanol production method by a combination of a mechanical pretreatment method and a saccharification treatment method using an enzyme.

About the mechanical pretreatment method Yakuhisa, etc. of the Osaka Institute of Technology has used the mechanical crushing method to produce woody biomass in the Special Research Report of the Ministry of International Trade and Industry, Ministry of International Trade and Industry in 1985. A method of pulverizing and performing saccharification conversion with an enzyme has been reported.

Reported that 80-90% of softwood wood polysaccharides, which are difficult to enzymatically saccharify by using a vibrating ball mill for 5 hours, can be saccharified, and that high impact force is required when pulverizing wood to increase the saccharification rate. ing.

Ito et al. Reported “Study on pulverization for bioethanol production” at Resources and Materials 2005 (Muroran) of the Japan Society of Resources and Materials.

Using a vibration mill of one cutting rod medium that generates a large impact force, 4 grams of cedar powder, which has become about 200 μm by pre-grinding, is ground for about 30 minutes and is about 75% of wood polysaccharide (holocellulose). Has been reported to be saccharified.

Japanese Patent Application Laid-Open No. 2004-188339 discloses a vibratory crusher that combines a rod charging crushing cylinder and a ball charging crushing cylinder to reduce the wood material to 100 μm or less.

Japanese Patent Laid-Open No. 2004-000823 introduces a ball and a pulverized sample into a high-speed rotating pulverization container, scrapes only the ball from the inner wall of the container with a guide vane, and blows the container at a high speed to form a sample rotating with the pulverization container A device that crushes by colliding is released.

In the pulverizer disclosed in JP-A-2004-188339, a particle size of about 100 μm can be obtained. However, in order to pulverize woody biomass and efficiently saccharify it with an enzyme, it is fine to about 20 to 30 μm. Since it is necessary to carry out pulverization to continuously apply a high impact force after the formation, the pulverization processing time is required for 5 hours or more, and there is a problem that this time is within 1 hour.

Since the pulverizer disclosed in Japanese Patent Application Laid-Open No. 2004-000823 can apply a high impact force, a high saccharide conversion rate can be achieved when the powder obtained by pulverizing woody biomass for about 1 hour is saccharified with an enzyme.

In addition to the collision between the ball blown in the container and the fixed wall, there is some collision between the balls, and there is a problem that the high kinetic energy of the ball blown in the container cannot be efficiently converted into high impact energy.

In addition, since it is a batch type processing method, there is a problem that the pulverization efficiency cannot be sufficiently increased because it is not possible to obtain an optimum ball diameter for a particle diameter that has been reduced by the pulverization process.

In Yakuhisa and other red pine crushing tests, the maximum saccharification rate was 62% in 72 hours when pulverized with a 3 liter pod, and the saccharification rate was 5.5 hours when pulverized with a 1.8 liter pod. There is a problem that the processing time until the maximum saccharification rate is reached becomes very long when the maximum amount becomes 66.8% and the processing amount becomes large.

Even in a large-capacity pulverizer, the solution to the problem of the pulverizer that produces a powder having a high saccharification rate in a short time was interrupted around 1990 because the oil crisis was alleviated.

The vibration-type cutting rod mill used by Ito et al. Is a case where the grinding media is one rod and the grinding amount is as small as 4 grams, and how to increase the capacity for use in an actual plant is a problem. is there.

The present invention has been made in response to such a conventional situation, and an object thereof is to provide a high impact pulverizer for pulverizing woody biomass.

In order to achieve the above object, in the high-impact pulverizer for pulverizing woody biomass of the present invention, the invention according to claim 1 is characterized in that one cutting is performed by combining a plurality of thick plates with protrusions around the periphery. It is characterized by having a structure that exhibits the same function as the rod.

If the length and outer diameter of the cutting rod are simply increased in order to increase the capacity of the conventional vibrating cutting rod mill, only the both ends of the cutting rod will collide with the inner wall of the container when it is vibrated for crushing. In contrast, the proposed high-impact pulverizer for pulverizing woody biomass, which has a tendency to lower the pulverization efficiency, has protrusions on the periphery when vibrated for pulverization. Each of the thick discs independently collides with the inner wall of the container, so the grinding efficiency does not decrease even if the grinding container is lengthened with the aim of increasing the capacity. Since the diameter of each thick disk with protrusions can be increased, the impact force that can be applied is also increased. Therefore, even if the thickness of the thick disk with protrusions on the periphery is reduced, high impact force can be secured. Even grinding efficiency without changing the length of the cylindrical container becomes is characterized in that the structure does not decrease.

In the invention according to claim 2, the tip of the protrusion attached to the outer peripheral surface of the thick disc loaded as it moves from the woody biomass chip supply side according to claim 1 to the product powder discharge side It is characterized in that it has a structure that exhibits the same function as one cutting rod in a combination of a narrower width, a larger number of protrusions, and a thinner disc plate thickness.

In the high-impact pulverizer for woody biomass pulverization with the above configuration, if the supplied biomass chip has a large particle size, the protrusion is damaged even if the protrusion on the outer peripheral surface of the thick disk directly collides with the inner wall of the container. When the particle size becomes smaller due to progress of grinding, the tip width of the straight tip protrusion on the outer surface of the thick disc is reduced, the number of projections is increased, and the disc thickness is increased. This is a configuration in which the frequency of collision with the pulverized sample is increased by reducing the thickness and increasing the number of disks.

The invention according to claim 3 is characterized in that the hardness is increased by quenching the tip of the protrusion attached to the outer peripheral surface of the thick disc according to claim 1. .

In the high-impact pulverizer for pulverizing woody biomass with the above configuration, during the processing of the supplied biomass chips and the finely pulverized powder, protrusions directly attached to the outer peripheral surface of the thick disk are formed on the inner wall of the container. This is a configuration for preventing the protrusion from being damaged even if it collides.

The invention according to claim 4 is characterized in that a hole is concentrically formed in the thick disc according to claim 1 , and the hole is closed with an object having a specific gravity greater than that of the thick disc. It is what.

In the high-impact pulverizer for pulverizing woody biomass with the above configuration, the impact force of the required magnitude can be applied to the biomass chips and powder supplied by the protrusions on the outer peripheral surface even if the thick disc is thinned. When the container length is constant, the number of thick discs can be increased, so that the collision frequency between the grinding medium and the sample can be increased.

The invention according to claim 5 is characterized in that the central portion of at least one surface of the thick disc having protrusions on the outer peripheral surface according to claim 1 is the highest smooth convex surface. is there.

In the high-impact pulverizer for pulverizing woody biomass with the above configuration, when the plate is vibrated for the pulverization process, each of the thick plate discs with protrusions on the outer peripheral surface is likely to cause relative vibration independently. In this configuration, the impact force on the sample can be kept high.

The invention according to claim 6 is characterized in that a cooling mechanism is provided on the outer surface of the cylindrical container according to claim 1 so that the cooling temperature can be adjusted in the axial direction of the cylindrical container.

In the high-impact pulverizer for pulverizing woody biomass having the above-described configuration, the temperature of the inner surface temperature in the axial direction in the cylindrical container can be controlled so that the moisture content of the sample being pulverized is optimized.

The invention according to claim 7 is characterized in that a cooling mechanism is provided on the outer surface of the cylindrical container according to claim 1, and the pulverization is performed by adjusting the cooling temperature in the axial direction of the cylindrical container.

In the high-impact pulverizer for pulverizing woody biomass with the above configuration, the moisture content of the powder during pulverization is adjusted by controlling the inner surface temperature in the axial direction in the cylindrical container, so that the saccharification rate is increased. It is a driving method to do.

The invention described in claim 8 is characterized in that nozzles are provided on both end faces and the outer surface of the cylindrical container according to claim 1 , and nitrogen gas is supplied to or discharged from the cylindrical container. is there.

The high-impact pulverizer for pulverizing woody biomass having the above-described configuration is configured to control the dryness of the atmospheric gas in the axial direction in the cylindrical container.

In the ninth aspect of the present invention, the nitrogen gas is supplied to or discharged from the cylindrical container using the nozzles provided on both end faces and the outer surface of the cylindrical container according to the first aspect, and the degree of dryness of the atmospheric gas. It is characterized by controlling.

In the high impact pulverizer for pulverizing woody biomass with the above configuration, the moisture content of the powder during pulverization is controlled by controlling the dryness in the axial direction of the cylindrical container by changing the injection and discharge of nitrogen gas in the axial direction in the cylindrical container. This is an operation method that increases the amount of non-freezing water that increases the saccharification rate.

The invention according to claim 10 is characterized in that a plurality of cylindrical containers according to claim 1 are bundled.

In the high-impact pulverizer for pulverizing woody biomass with the above configuration, in order to increase the capacity, instead of increasing the diameter of the cylindrical container, the number of containers was increased to increase the collision frequency between the pulverization medium and the solid wall per pulverization amount. It is a configuration.

In the present invention, it is possible to make the partition wall provided in grinding the cylindrical container of the vibration mill was charged with different ball diameters in a room is isolated by the partition configuration.

In the conventional vibrating ball mill, a large amount of raw material processing is performed using balls of the same diameter without providing a partition. However, in the high impact pulverizer for pulverizing woody biomass having the above configuration, a partition is provided and the partition is configured. When the raw material particle size is large in the pulverizing chamber, a ball having a large diameter can be effectively applied to the pulverized sample by reducing the ball diameter as the particle size decreases .

In the present invention, it is possible to adopt a configuration in which charged the inner cylinder in a circular cylinder container.

In the high-impact pulverizer for pulverizing woody biomass having the above-described configuration, the collision frequency between the ball of the pulverizing medium and the fixed wall can be increased .

In the present invention, it is possible to adopt a configuration in which charged a plurality of rods to the grinding chamber which is constituted by a partition wall of the circular tube in the container.

In the high-impact pulverizer for pulverizing woody biomass with the above-described configuration, the rod of the pulverizing medium is provided by providing many pulverizing chambers that can shorten the rod length even when the cylindrical container length is increased in order to increase the capacity of the vibrating rod mill. And the frequency of collision with the fixed wall can be increased .

A large-diameter rod can be added to the pulverization medium by providing a partition with a large diameter rod when the raw material particle size is large, and reducing the diameter of the rod as the particle size decreases. This is the configuration.

In the high-impact pulverizer for pulverizing woody biomass of the present invention, in the invention described in claim 1, a plurality of thick plate discs with protrusions are inserted into a cylindrical container, and one cutting rod is attached. Since it is configured to function as a pulverizing medium equivalent to the case of charging, even if the length of the cylindrical container is increased to process a large amount of woody biomass chips, the collision between the cylindrical container wall and the pulverizing medium occurs. Since the frequency is about the same as that of one cutting rod that performs a small amount of processing, a high-impact pulverizer for pulverizing woody biomass that produces a powder having a high saccharification rate by pulverization for 1 hour or less can be produced.

In the invention described in claim 2, the thickness of the protrusion tip of the thick plate disk on the woody biomass chip supply side is increased and the number of protrusions is reduced with the thick disk provided with protrusions around the invention described in claim 1. , The thickness of the disk is increased, the width of the protrusion tip of the thick disk disk on the powder outlet side is narrowed, the number of protrusions is increased, and the thickness of the disk is reduced. As the impact frequency is increased as the powder is pulverized with a high impact force and becomes a fine powder, a high impact pulverizer for pulverizing woody biomass with good pulverization efficiency can be manufactured.

In the invention described in claim 3, since the hardness of the tip of the protrusion attached to the periphery of the thick disc of the invention described in claim 1 is increased, the tip of the protrusion and the inner wall of the cylindrical container are separated during the pulverization process. It is possible to manufacture a high-impact pulverizer for pulverizing woody biomass that can reduce the occurrence of damage to protrusions when directly impacted.

According to a fourth aspect of the present invention, there is provided a structure in which an opening is provided concentrically in the thick disk of the first aspect of the invention, and the opening is closed with a material having a higher specific gravity than the material of the thick disk. Therefore, the necessary impact force can be ensured by reducing the thickness of the thick disk, so when the cylindrical container length is constant, the number of thick disks can be increased. A high-impact pulverizer for pulverizing woody biomass that produces a large amount of powder with a saccharification rate can be produced.

According to a fifth aspect of the present invention, there is provided a plurality of thick plates such that one side of the thick disc of the first aspect is a flat surface, a smooth convex surface is formed at the center of the other surface, and the convex surface and the flat surface are in contact with each other. It is the same structure as one cutting rod with a disc, and each plate disc tends to cause relative vibration motion independently when vibration motion is given to process a large amount of woody biomass chips. Therefore, a high-impact pulverizer for pulverizing woody biomass, which can produce a powder having a high saccharification rate by pulverizing treatment for 1 hour or less, as in the case of one cutting rod that performs a small amount of processing, can be produced.

The invention according to claim 6 is characterized in that a cooling mechanism is provided on the outer surface of the cylindrical container according to claim 1 , and the cooling temperature can be adjusted in the axial direction of the cylindrical container. Since the inner surface temperature can be easily controlled, the moisture content of the sample during pulverization can be optimized to obtain a high saccharification rate powder.

In the invention according to claim 7, the cooling mechanism configured on the outer surface of the cylindrical container according to claim 1 is used to adjust the cooling temperature in the axial direction of the cylindrical container and perform the pulverization treatment to thereby reduce the inner surface temperature in the axial direction of the cylindrical container. Control and adjust the moisture content of the powder being crushed so that the moisture content can be increased to increase the saccharification rate.

In the invention described in claim 8, the nozzles in the cylindrical container according to claim 1 are provided with nozzles on both end faces and the outer surface of the cylinder so that nitrogen gas is supplied to or discharged from the cylindrical container. It is the structure which can control the dryness of the atmospheric gas of direction.

According to the ninth aspect of the present invention, by using the nozzles provided on both end faces and the outer surface of the cylindrical container according to the first aspect, the injection and discharge of nitrogen gas are changed at the axial position in the cylindrical container to change the axial direction of the cylindrical container. The dryness of the powder is controlled, the moisture content of the powder being crushed is adjusted, and the moisture content is increased to increase the saccharification rate.

In the invention according to claim 10, the cylindrical container according to claim 1 is bundled in plural, so that the number of containers is increased instead of increasing the diameter of the cylindrical container in order to increase the capacity. In this configuration, the collision frequency between the medium and the solid wall is increased.

In the present invention, a partition wall is provided in a pulverization cylindrical container of a vibration mill, and a ball having a different diameter is inserted into a pulverization chamber separated by the partition wall. in grinding process advances may be configured to particle size increased a lot to grinding efficiency collision frequency while maintaining the additional impact force is smaller the diameter of the ball in accordance reduced.

In the present invention, with the configuration that was charged with the inner cylinder in a circular cylinder chamber, increase the collision frequency between the ball and the fixed wall of the grinding media, to cause the movement to pivot the ball to the inner cylinder around an impact force it can be a larger manner with improved pulverization efficiency construction.

In the present invention, with the configuration that was charged with a plurality of rods to the grinding chamber which is constituted by a partition wall of the circular tube in the container, even when the long cylindrical container length to increase the capacity of the vibration rod mill, rod Many crushing chambers that can be shortened are provided to increase the collision frequency between the rod of the grinding media and the fixed wall. When the raw material particle size is large, a larger diameter rod is used. can be of diameter also improve grinding performance by increasing the collision frequency while maintaining the additional impact by reducing configuration.

A first embodiment of a high impact pulverizer for pulverizing woody biomass according to the present invention will be described with reference to FIG.

In FIG. 1, this embodiment has a specific gravity in a concentric opening of a cylindrical container 1, a thick disk 2 with a plurality of protrusions 3, and a thick disk 2, compared with the material of the thick disk 2. A weight adjusting plate 4 made of a large material is mounted and fixed. One surface of the weight adjusting plate 4 is flat, and the opposite surface is the highest in the center and has a smooth convex shape. The thicknesses of the discs 2 are equal, they are fixed without any step, and are mounted so that the flat surface and the convex surface of the adjacent weight adjusting plate 4 are in contact with each other, and are smooth at the center of one side of the side surface of the cylindrical container 1. A convex surface is formed, and a plurality of thick discs 2 are mounted so that this surface and the plane of the weight adjusting plate 4 are in contact with each other.

The tip of the protrusion on the outer periphery of the thick disc 2a on the supply port side of the woody biomass chip 5 is about 2 mm wide, and the tip of the protrusion on the outer periphery of the thick disc 2c on the outlet side of the biomass powder 6 The width of the protrusion is about 0.5 mm, and the width of the tip of the protrusion on the outer peripheral portion of the thick disc 2b in the middle of the two is configured in such a manner that the width becomes narrower in order from 2 mm to 0.5 mm. Yes.

The biomass powder 6 has a structure in which the protrusions on the outer peripheral portion of the thick disc 2c on the outlet side of the biomass powder 6 are the shallowest and the number of protrusions in the circumferential direction is the largest. Although not shown in figure, the biomass chip | tip 5 is supplied from the opening part of the side surface of the cylindrical container 1 from the woody biomass supply apparatus, and the biomass powder 6 can be continuously taken out from the opening part of the opposite side surface of the cylindrical container 1. Has been.

A cooling coil 8 (a jacket structure partitioned in the direction of the cylindrical axis) is attached to the outer periphery of the cylindrical portion of the cylindrical container 1 so that the temperature of the inner wall of the cylindrical container 1 can be controlled by the axial position of the cylindrical container. It is configured to allow temperature-controlled water to flow through.

Nozzles 9 are mounted at horizontal positions on both ends of the cylindrical container and on the outer surface of the cylindrical container so that dry nitrogen gas can be injected and nitrogen gas in the cylindrical container can be taken out.

A mechanism for vibrating the cylindrical container 1 in the vibration direction 7 (gravity direction) is attached so that the biomass chip and its powder move in the cylindrical container 1 over a period of about 30 minutes.

In the present embodiment configured as described above, the biomass chip 5 having a size of several centimeters from the biomass chip 5 supply device is put into the cylindrical container 1 from the supply port (not shown) of the biomass chip 5 of the cylindrical container 1. The cylindrical container 1 is pulverized by exciting the cylindrical container 1 in the vibration direction 7 (gravity direction) with an amplitude of 10 mm and a vibration frequency of about 900 rpm.

The vibration of the cylindrical container 1 is performed so that the thick disk 2 moves relative to the container while rolling in the cylindrical container 1, and is attached to the periphery of the thick disk 2 a on the supply side of the biomass chip 5. Since the tip width of the protrusion 3 is as thick as about 2 mm, the number of protrusions is small, and the height of the protrusion is high, a high impact is applied to the biomass chip 5 having a size of several centimeters to make it the size (length) of the cell level. Can be easily pulverized to about 200 microns and a thickness of about 40 microns).

The number of inserted thick discs 2a is adjusted so that this crushing can be performed.

From the size of the cell level to the particle diameter of about 30 microns, the width of the tip of the protrusion 3 attached to the periphery of the thick disk 2b is about 1 mm, and the number of protrusions is larger than the number of protrusions of the thick disk 2a. The thick disc 2b having a reduced thickness is charged and pulverized.

After the powder particle size reaches about 30 microns, the width of the tip of the protrusion 3 attached to the periphery of the thick disk 2c is about 0.5 mm, and the number of protrusions is larger than the number of protrusions of the thick disk 2b. The thick disc 2c having a reduced thickness is charged and pulverized.

The residence time of the pulverized material in the cylindrical container 1 is about 10 minutes from the size of the chip to the particle size of about 30 microns, and the time for applying a high impact force after reaching the particle size of about 30 microns. The feed rate of the biomass chip 5 to the cylindrical container 1 and the length of the cylindrical container 1 are adjusted so as to be about 20 minutes.

Here, an example of a thick plate disk pulverized medium with protrusions is shown with three stages of particle size classification in the pulverization treatment, but the present invention is not limited to this classification.

When the inner diameter of the cylindrical container increases, the outer diameter of the thick disk that can be inserted can also be increased. Therefore, when the impact force applied to the crushed sample is aligned from the tip of the protrusion, the thick disk is compared to the small diameter cylindrical container. The thickness of the plate can be reduced, and the number of thick plates is increased under the condition that the length of the cylindrical container is fixed. Can produce a powder with a high saccharification rate.

The moisture content of biomass chips, which are generally available as raw materials, is about 15%, but the saccharification rate of the powder produced when the initial moisture content is about 5% is maximum, and the 50% passing particle size is 30 microns. Since the saccharification rate of the powder until the particle size becomes small is not so large, a sample that had a water content of about 15% when the pulverization process was started with the thick disk 2a was pulverized with the thick disk 2b. Prior to the treatment, dry nitrogen gas 10 at room temperature is injected into the cylindrical container 1 from the nozzle 9 so that the moisture content of the crushed sample is about 5%.

Dry nitrogen gas is injected from the side on which the thick discs 2a, 2b roll by the nozzle 9 attached to the horizontal position of the cylindrical surface of the cylindrical container 1, and wetted from the nozzle 9 on the far side. Exhaust nitrogen gas.

Hot water is allowed to flow through the coil 8 of the outer cylindrical container 1 on which the thick discs 2a and 2b roll to raise the temperature of the inner surface of the cylinder and heat the crushed sample.

The amount and temperature of the hot water flowing through the coil 8 are adjusted so that the temperature of the nitrogen gas discharged from the nozzle 9 is about 40 ° C.

The coil 8 of the outer cylindrical container 1 on which the thick disk 2c rolls is supplied with cold water to keep the temperature of the inner surface of the cylinder at room temperature, and from the nozzle 9 from the side on which the thick disk 2c rolls and faces. Moist nitrogen gas 10 is injected, nitrogen gas is exhausted from the nozzle 9 on the far side and the nozzle 9 on the end face from which the biomass powder 6 is taken out, and the moisture content is maintained when the sample is crushed by the thick disk 2c. To do.

According to this embodiment, protrusions are provided on the periphery, concentric openings are closed with a material having a large specific gravity, one side is a flat surface, and a smooth convex portion is provided at the center of many surfaces. Combining a plurality of thick discs, a grinding medium that performs the same function as one cutting rod is constructed, and the width of the tip of the protrusion around the thick disc on the woody biomass chip supply side is increased.・ Reduce the number of protrusions ・ Increase the protrusion height, increase the thickness of the disk, and decrease the width of the protrusion tip as it goes to the powder outlet side ・ Increase the number of protrusions ・ Reduce the protrusion height and reduce the disk thickness By making the structure thin, it is a vibration-capturing cutting rod mill method that can handle large capacities. A function that changes the shape and number of protrusions in response to changes in particle size that cannot be achieved with a small one-rod. And control moisture content in response to changes in particle size That function becomes so performed easily powdered product become high saccharification rate woody biomass chips below pulverizing 1 hour than because of the added.

A second embodiment of a high-impact pulverizer for pulverizing woody biomass according to the present invention will be described (not shown).

In the present embodiment, a bundle of a plurality of cylindrical containers 1 having a reduced outer diameter is attached to a vibration exciter and loaded with a thick disc 2 shown in FIG.

The operation of the present embodiment configured as described above is the same as that of the first embodiment.

According to the present embodiment, since a collision portion between the grinding medium and the inner wall of the cylindrical container is larger than that in the first embodiment, a large amount of sample can be crushed.

A third embodiment of the high impact pulverizer for pulverizing woody biomass according to the present invention will be described with reference to FIG.

In FIG. 2, the present embodiment is the same as that in FIG. 1, but a partition wall 11 is provided in the cylindrical container 1, and the pulverizing medium to be charged is different.

A plurality of partition walls 11 are provided in the cylindrical container 1, a plurality of crushing chambers 13 are formed, a ball having the largest diameter is inserted into the crushing chamber 13a on the side where the biomass chips 5 are inserted, and the biomass powder 6 comes out. In this configuration, the ball 12 having the smallest diameter is inserted into the crushing chamber 13b on the coming side. The partition 11 is provided with an opening (not shown) through which the pulverized sample passes but the ball does not pass.

The operation of the present embodiment configured as described above is the same as that of the first embodiment.

According to the present embodiment, as the pulverized sample is pulverized, a high impact force is frequently applied with the vibration medium having the optimum ball diameter.

A fourth embodiment of a high impact pulverizer for pulverizing woody biomass according to the present invention will be described with reference to FIG.

In FIG. 3, the present embodiment is the same as that in FIG. 1, except that an inner cylinder 15 and a partition wall 14 are provided in the cylindrical container 1, and the pulverizing medium to be charged is different.

A plurality of crushing chambers 17a and 17b are constituted by a plurality of partition walls 14 and an inner cylinder 15 in the cylindrical container 1, and the ball 16 having the largest diameter is loaded into the crushing chamber 17a on the side where the biomass chip 5 is loaded. The ball 16 having a small diameter is inserted into the grinding chamber 17b as it goes to the side where the biomass powder 6 comes out.

The partition 14 is provided with an opening (not shown) through which the pulverized sample passes but the ball does not pass.

The operation of the present embodiment configured as described above is the same as that of the first embodiment.

According to the present embodiment, with the progress of pulverization of the pulverized sample, a high impact force is applied to the inner cylinder surface and the inner surface of the cylindrical container with a vibration medium having an optimal ball diameter and the number of balls.

A fifth embodiment of the high impact pulverizer for pulverizing woody biomass according to the present invention will be described with reference to FIG.

In FIG. 4, the present embodiment is the same as that in FIG. 1, but a partition wall 14 is provided in the cylindrical container 1, and the pulverizing medium to be charged is different.

A plurality of crushing chambers 20a and 20b are constituted by a plurality of partition walls 18 provided in the cylindrical container 1, and the longest rod 19 having the largest diameter is inserted into the crushing chamber 20a on the side where the biomass chip 5 is inserted. As the biomass powder 6 comes to the side where the biomass powder 6 comes out, many short rods 19 having a small diameter are inserted into the crushing chamber 20b. The partition 18 is provided with an opening (not shown) through which the crushed sample passes but the rod does not pass.

The operation of the present embodiment configured as described above is the same as that of the first embodiment.

According to this embodiment, as the pulverized sample is pulverized, a high impact force is applied by the vibration medium having the optimum rod diameter, rod length, and number of rods.

The pulverization medium of 2.6 ton / hr vibration mill for treating inorganic materials, which is currently commercialized, is used as the pulverization medium of the present invention at an ethanol production scale of 20,000 kL / year using woody biomass such as thinned wood. By exchanging it, it becomes possible to pulverize optimally for woody biomass, and the production cost of bioethanol excluding raw material costs can be reduced to 20 yen / L.

In order to fully disseminate E3 fuel containing 3% bioethanol in gasoline as a fuel for automobiles, the required amount of bioethanol is 1.75 million kL / year, and it is currently being considered to earn from Brazil.

By using the present invention, the production cost of bioethanol produced using woody biomass such as thinned wood produced in Japan will be able to compete with imported goods from Brazil. Can be used as resources, and at the same time, it can contribute to the promotion of the forest industry and contribute to the conservation of the national land.

The production cost of bioethanol obtained by crushing woody biomass and performing saccharification with enzymes and ethanol fermentation with yeast is able to compete with the price of gasoline. This makes it possible to reduce the manufacturing cost when manufacturing biodegradable plastics, and it is also used in the recycling industry that manufactures biodegradable plastics from woody biomass.

1 is a first embodiment of the present invention. 3rd Example of this invention. 4 shows a fourth embodiment of the present invention. 5th Example of this invention.

1 ... Cylinder 2 ... Thick disc
2a ... Thick disc 2b ... Thick disc
2c ... thick disk
3… Protrusions 4… Weight adjustment plate
5… Biomass chip 6… Biomass powder
7 ... Excitation direction 8 ... Coil
9 ... Nozzle 10 ... Nitrogen gas
11 ... Bulkhead 12 ... Ball
13 ... Crushing chamber 13a ... Crushing chamber
13b ... Grinding chamber 14 ... Bulkhead
15 ... Inner cylinder 16 ... Ball
17 ... Crushing chamber 17a ... Crushing chamber
17b ... Grinding chamber 18 ... Bulkhead
19 ... Rod 20 ... Grinding chamber
20a ... Crushing chamber 20b ... Crushing chamber

Claims (10)

Can and a cylindrical container having a circular inner wall was a vertical vibration in the horizontal, thick disc with a plurality of projections in a straight line in the thickness direction on the outer peripheral surface, vertical vibration of the inner wall of the cylindrical container and it allows rolling, and supplies a plurality inserted structure provided inner wall clearance thick disc of the cylindrical container, a wood-based biomass chips in the gap of the thick disk and said cylindrical container woody biomass grinding high impact grinder, wherein the kite is provided a feed mechanism. Toward the discharge mechanism side product powder discharged woody biomass chips of said cylindrical container from the supply mechanism side supply according to claim 1, with the outer peripheral surface of the thick disc is inserted inside the cylindrical container the width of the projecting tip is narrow, the number number of protrusions, woody biomass grinding high impact pulverizer according to claim 1, wherein the thickness of the thick disc is reduced. 2. The high impact pulverizer for pulverizing woody biomass according to claim 1, wherein the tip of the protrusion attached to the outer peripheral surface of the thick disc inserted in the cylindrical container is quenched. . The thick disc is inserted into the cylindrical container according to claim 1, a hole concentrically, characterized in that the plugged in large Material specific gravity than the hole made of the thick disc A high impact pulverizer for pulverizing woody biomass according to claim 1. The woody biomass grinding height according to claim 1, wherein a central portion of at least one surface of the thick disc inserted in the cylindrical container is the highest smooth convex surface. Impact crusher. 2. The high impact pulverizer for pulverizing woody biomass according to claim 1, wherein a cooling mechanism is provided on the outer surface of the cylindrical container so that the cooling temperature can be adjusted in the axial direction of the cylindrical container. According to claim 6, characterized in that an optimum grinding ambient temperature according to adjust the cooling temperature in the cylindrical axial direction of the container to a particle size in the cooling mechanism constituting the outer surface of the cylindrical container as in claim 6 Operation method of high impact crusher for crushing woody biomass. In Claim 1, the nozzle which supplies the nitrogen gas which adjusted the dryness to the both end surfaces and the outer surface of the said cylindrical container , and the nozzle which discharges were provided, and it became possible to adjust the dryness of atmospheric gas in the axial direction of the said cylindrical container. The high impact pulverizer for pulverizing woody biomass according to claim 1. Both end faces, and a nitrogen gas from a nozzle provided on the outer surface to adjust the drying degree of said cylindrical vessel of said cylindrical container injected or discharged in claim 8, the drying of the ambient gas in the cylindrical vessel grinding situation The operation method of the high impact pulverizer for pulverizing woody biomass according to claim 8, wherein the method is optimized according to the method. Woody biomass grinding high impact pulverizer according to claim 1, characterized in structures obtained by bundling a plurality of the cylindrical container according to claim 1.

Images