WO2007063958A1

WO2007063958A1 - Method and apparatus for pressurized hot water treatment

Info

Publication number: WO2007063958A1
Application number: PCT/JP2006/323979
Authority: WO
Inventors: Shinnosuke Miyauchi; Youji Yuuki; Tsuyoshi Tsutsui
Original assignee: National University Corporation Nagaoka University Of Technology; Niigata Tlo Corporation
Priority date: 2005-12-01
Filing date: 2006-11-30
Publication date: 2007-06-07
Also published as: JP2007151424A

Abstract

It is intended to provide a pressurized hot water treatment method whereby a mushroom component remaining in a waste cultivation bed of mushroom can be efficiently extracted while reducing the raw water requirement or reducing the waste water production to thereby lower the cost therefor. A pressurized hot water treatment method which comprises the extraction step wherein a mushroom component is extracted while contacting a waste cultivation bed of mushroom with pressurized hot water, and the separation step wherein the mushroom component dissolved in the liquid extract having been extracted in the extraction step is separated from the liquid extract. After the completion of the separation step, the liquid extract is reused as the pressurized hot water in the extraction step as described above.

Description

Specification

Pressurized hot water treatment method and apparatus

Technical field

[0001] The present invention relates to a pressurized hot water treatment method and apparatus for a mushroom cultivation waste fungus bed capable of extracting mushroom components from the mushroom cultivation waste fungus bed.

Background art

[0002] For the cultivation of mushrooms such as shiitake mushrooms, maitake mushrooms, beech shimeji mushrooms, a mushroom cultivation bed (medium) made of sawdust and the like is used and discarded as mushroom cultivation waste fungus beds after harvesting mushrooms. In recent years, with the rapid increase in mushroom cultivation, this mushroom cultivation waste bed has been discharged in large quantities. As a method of disposing of this mushroom cultivation waste fungus bed, a method of incineration disposal can be considered, but usually a large amount of water (usually 50 to 70% moisture) is contained in the mushroom cultivation waste fungus bed. Incineration requires a lot of energy and is not a good idea.

[0003] Accordingly, various studies have been made on the reuse of the discharged mushroom cultivation waste fungus bed, and various attempts have been made. For example, in order to use mushroom cultivation waste fungus beds for re-cultivation of mushrooms, a method using active ingredients such as carbohydrates, nitrogen and minerals remaining in mushroom cultivation waste fungus beds has been proposed. (Patent Document 1).

[0004] In addition, attempts have been made to use mushroom cultivation waste fungus beds as compost. For example, a production method has been proposed in which an oligosaccharide is added to a mushroom cultivation waste fungus bed to promote microbial fermentation to efficiently compost the mushroom cultivation waste fungus bed (Patent Document 2). Alternatively, it has been tried to be used for the production of alcohol and methane gas as raw materials for methane fermentation by microorganisms, and also to be used as livestock feed.

[0005] However, the method of using the active ingredient remaining in the mushroom cultivation waste fungus bed described in Patent Document 1 only uses the ingredients of the cultivation bed remaining in the mushroom cultivation waste bed. Therefore, effective mushroom components such as glucan-derived sugar components and chitin components contained in mushroom mycelia and part of fruiting bodies remaining entangled with sawdust of mushroom cultivation waste fungi are discarded without being used. In addition, the wood component of sawdust used in mushroom cultivation waste beds contains a large amount of cellulose, hemicellulose, lignin, etc. and is difficult to be decomposed. This hindered microbial fermentation and had a problem of adversely affecting the efficiency of microbial fermentation.

[0006] In addition, regarding the production method for composting described in Patent Document 2, the raw material for methane fermentation by microorganisms, and the feed for livestock, undecomposed cellulose and mushroom cultivation waste fungi beds still remain. Since woody components such as hemicellulose and lignin remain in large quantities, they often cause adverse effects when they are composted using microbial fermentation, as raw materials for various microbial fermentation, or as feed for livestock. . In addition, the mushroom cultivation waste fungus bed contains mushroom mycelium and mushroom scraps that are part of the fruiting body intertwined with the lump of sawdust, and the above composting process, raw materials for microbial fermentation, and livestock feed In this process, the mushroom waste may rot and give off a foul odor, which may lead to environmental pollution.

[0007] Against this background, the present inventors focus on the mushroom components remaining in the mushroom cultivation waste fungus bed, and can efficiently extract the mushroom components from a part of mushroom hyphae and fruit bodies. Invented and filed a new pressurized hot water treatment method for mushroom cultivated waste bed that can prevent malodor caused by mushroom waste (Japanese Patent Application No. 2004-338649). This is a pressurized hot water treatment method for mushroom cultivation waste fungus bed, which extracts mushroom components by mixing and pressurizing the waste fungus bed with water and heating it to 120 ° C. According to this, mushroom components can be efficiently extracted from a part of mushroom hyphae and fruit bodies remaining in the mushroom cultivated waste bed, and the generation of malodor caused by mushroom waste can be prevented. it can. Patent Document 1: Japanese Patent No. 2638399

Patent Document 2: Japanese Patent Application Laid-Open No. 11-171677

Disclosure of the invention

Problems to be solved by the invention

[0008] In the method of heating the waste microbial bed as described above mixed with water and pressurizing it until the temperature reaches 120 ° C, it is many times as many as the mushroom cultivated waste microbial bed as the raw material. A lot of water is needed. In particular, if the extraction is performed in multiple stages (for example, three stages) at different temperatures, the required amount increases. Since raw water used as pressurized hot water (subcritical water) is preferably sufficiently purified water, the cost of raw water increases. In addition, the amount of waste water after the precipitation treatment increases accordingly, and the cost increases due to the treatment of this waste water. [0009] Therefore, the present invention efficiently reduces mushroom components remaining in a mushroom cultivation waste fungus bed while reducing the cost for reducing the required amount of raw water or reducing the amount of wastewater generated. It is an object of the present invention to provide a pressurized hot water treatment method and apparatus that can be extracted.

Means for solving the problem

[0010] The present invention has been made to solve the above problems, and the pressurized hot water treatment method according to claim 1 is in a state in which pressurized hot water is in contact with the mushroom cultivation waste fungus bed. It has an extraction process for extracting mushroom components and a separation process for separating solid components from the extracted liquid after the extraction process, and the extracted liquid after the separation process is reused as pressurized hot water in the extraction process It is characterized by that.

[0011] The pressurized hot water treatment method according to claim 2 is the invention according to claim 1, wherein the extraction step is performed in a plurality of stages by changing the temperature of the pressurized hot water with respect to the mushroom cultivation waste fungus bed. In addition, it is characterized in that the extracted liquid after the separation process is reused for each extraction process at each temperature.

[0012] The pressurized hot water treatment method according to claim 3 is the invention according to claim 1 or claim 2, wherein the separation step is performed by allowing the extract to stand still and a mushroom component due to a difference in specific gravity. And a step of separating.

[0013] The pressurized hot water treatment apparatus according to claim 4 includes an extraction treatment apparatus that extracts a mushroom component in a state where the pressurized hot water is in contact with the mushroom cultivation waste fungus bed, and an extraction liquid that has finished the extraction process. And a reuse water supply line for reusing the extracted liquid after the separation process as pressurized hot water in the extraction processing apparatus.

[0014] The pressurized hot water treatment device according to claim 5 is the invention according to claim 4, wherein the separation device includes first-stage separation means for separating a mushroom cultivation waste fungus bed from the extract. And a second stage separation means for allowing the extraction liquid to stand and separating mushroom components by specific gravity difference.

[0015] The pressurized hot water treatment device according to claim 6 is the invention according to claim 5, wherein the extraction treatment device changes the temperature of the pressurized hot water with respect to the mushroom cultivation waste fungus bed. In several stages An extraction step is performed, and the second stage separation means is provided for each extraction step at each temperature.

[0016] The pressurized hot water treatment device according to claim 7 is the invention according to any one of claims 4 and 6, wherein reuse water is supplied to the reuse water supply line. It is characterized by being provided with a reused water tank for storage.

The invention's effect

[0017] According to the invention described in claim 1 to claim 6, mushroom cultivation while reducing the required amount of raw water or reducing the production amount of waste water, thereby reducing costs for these. Mushroom components remaining in the waste fungus bed can be efficiently extracted.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a view showing a treatment apparatus according to an embodiment for performing the pressurized hot water treatment method of the present invention. This apparatus is a processing container 10 that performs pressurized hot water treatment on a mushroom cultivation waste fungus bed to extract predetermined components, and a first separator that separates the slurry discharged from the discharge line 12 of the processing container 10 into a solid-liquid separation. 14 and three second separators 16a, 16b, 16c for separating the liquid separated from the first separator 14 for a predetermined time and separating the product liquid containing the predetermined effective component and the supernatant liquid, Reuse water for extraction processing of the solid component return line 18 for returning the solid component separated by the separator 14 to the processing vessel 10 and the supernatant liquid separated by the second separators 16a, 16b, 16c It has a reused water supply line 20 that returns to the treatment vessel 10 as a waste water. Slurry pumps 13 and 19 are provided in the discharge line 12 and the solid component return line 18, respectively.

[0019] The processing vessel 10 is a cylindrical, spherical, or other pressure vessel, and includes a charging portion 22 for charging solid raw materials, a treated water supply line 24 for supplying treated water, A discharge port 26 for discharging the processing liquid (extracted liquid) is provided. Inside, a propeller 28 for mixing and homogenizing the charged raw material and the processing liquid is provided, and a motor 30 for rotating the propeller 28 is provided. A cleaning nozzle 32 is provided to clean the inside of the container as necessary. The charging unit 22 is provided with a crusher 34 that crushes the waste bacteria bed supplied to the processing container 10 as necessary. Further, the processing vessel 10 is provided with a gas supply line for supplying an inert gas or the like or a pressurization line having a pressurizing means. Illustration is omitted.

[0020] The processing container 10 includes a heat exchanger 40 including a heat medium pipe 36 and a medium supply unit 38 that supplies a heat medium refrigerant to the heat medium pipe 36 in order to control the temperature of the internal raw materials and the processing liquid. A thermometer (not shown) is provided. If necessary, a control device is provided for controlling the operation of these heat exchangers based on the indicated value of the thermometer and controlling the temperature in the container in a predetermined pattern. The processing container 10 is preferably provided with a structure for promoting heat insulation, or a heat insulating material for heat insulation is used. Depending on the situation, these can be adopted as appropriate to save energy and improve work efficiency by promoting heating and cooling. Further, a heat exchanger may be installed between the slurry discharge line 12 and the treated water supply line 24 so as to effectively use the heat.

The discharge port 26 of the processing container 10 is connected to the first separator 14 by a discharge line 12 having a slurry pump 13. The first separator 14 is, for example, a filter press device that contains slurry in a filter bag and applies pressure to the slurry to squeeze the liquid. Needless to say, a separator having another configuration such as a centrifugal separator can be appropriately employed.

[0022] On the downstream side of the first separator 14, second separators 16a, 16b, 16c (16) are provided. As shown in FIG. 2, this is a stationary tank in which the extract separated by the first separator 14 is allowed to stand at room temperature for a predetermined time and its components are separated by specific gravity. This is based on the inventors' knowledge that when the extract is allowed to stand at room temperature for a predetermined time, it is separated into several layers as shown in the figure. For example, in the case of the second stage treatment, the uppermost layer is the supernatant liquid 42, which is water containing a water-soluble extraction component. The intermediate layer is a mushroom component liquid 44 mainly composed of mushroom components. The bottom layer is a small solid component (residue) 46 that has passed through the first separator.

[0023] Since they have different specific gravities, they are clearly separated and the appearance (color, transparency, viscosity, particle size, etc.) is different, so that the boundaries can be distinguished. The mushroom component layer is a transparent liquid layer whose upper layer is brownish, the middle layer is a white granular solid layer, the particle size is 20 μm or less, and the lower layer is brown or less lmm granular material.

[0024] The stationary tank, which is the second separator 16, is covered at the top in order to prevent foreign matters such as dust from entering. Vent 48 is provided at the top to facilitate cooling by air movement . Separation / exhaust pipes 50, 52, 54 for individually discharging the separated components are provided at predetermined height positions on the side walls. The supernatant discharge pipe 50 is provided with an on-off valve 51 and a pump 56, and water is stored in reuse water tanks 58a, 58b, 58c provided in the reuse water supply line 20. The mushroom component liquid 44 is stored in the product liquid tanks 60a, 60b, 60c through the discharge pipe 52 having the on-off valve 53. The residue is discharged using the slope of the bottom of the stationary tank. As shown in Fig. 2 (b), it is possible to force the supernatant liquid discharge pipe 50 to discharge only by gravity without using a pump. This makes it difficult for stirring to occur when the separated components are remixed. The product night tanks 60a, 60b, 60c are connected to the refiners 62a, 62b, 62c, where the liquid containing the active ingredient is concentrated. For this, methods such as distillation and freeze-drying are used.

[0025] Note that this processing apparatus is a batch system, and the amount of the mushroom component layer and the residue may vary for each batch. Therefore, in the second separators 16a, 16b, 16c (stationary tank), a glass window may be provided in a part of the wall in order to visually confirm the height of the boundary between the components. Also, the discharge height can be changed so that the discharge position can be changed according to the confirmed height, or a plurality of discharge pipes 50, 52, 54 are provided, and the optimum height is selected from these. You may choose to open one of the following. Furthermore, the suction pipe connected to the pump from above may be immersed to suck the component liquid or the like while adjusting the suction position.

[0026] In this embodiment, three second separators 16a, 16b, 16c are provided for one processing vessel 10, which is a process at each temperature, that is, a primary process, a secondary process. It is provided for processing and tertiary processing. This is because different components are extracted by processing at different temperatures, and these must be processed separately. For the same reason, the treated water is not common, so a reuse water tank is provided for each temperature. Although the first separator 14 is common, it is preferable to wash each treatment in order to prevent contamination by extracted components at other temperatures. Also good.

In this processing apparatus, subcritical water is used as “pressurized hot water”. Usually, subcritical water refers to the case where water is in a predetermined range where the temperature and pressure are lower than the critical point, and has the feature that organic substances can be decomposed into small molecules that dissolve in water at high speed. . In order to efficiently extract the active ingredients of mushrooms, the temperature of pressurized hot water (subcritical water) is from 110 ° C to 250 The pressure that is preferably in the range of ° C is preferably in the range of 0. IMPa to 5 MPa. In addition, the raw water that becomes pressurized hot water (subcritical water) can be used with ordinary tap water enough, such as ion exchange water, distilled water, filtered filtered water (for example, ultrafiltered water), etc. It is preferable to use purified water.

FIG. 3 is a flowchart for explaining the processing method of the present invention. This figure shows the flow of treated material and treated water. As shown in this figure, the same raw material is treated with pressurized hot water under three different temperature conditions. In other words, the first, second, and third extraction processes are performed from the low temperature side. In each process, solid-liquid separation is performed after extraction, and only the solid formation is sent to the next process. Since each processing step includes common elements and individual elements, the common elements will be summarized and the individual elements will be described individually.

[0029] First, the waste mushroom cultivation waste bed as a raw material is crushed by a crusher 34 as necessary, and is refined to, for example, about 10 to 100 mesh (step 10). The target mushroom cultivated waste bed can be a cultivated waste mushroom bed after cultivation of various types of mushrooms such as shiitake, maitake, hanabiratake, bunashimeji, nameko, eringi, etc. Is not something The raw materials usually contain about 60% moisture.

[0030] Prior to extraction, the mushroom cultivation waste bed may be pretreated with an organic solvent or hot water in advance. The effect of extraction of mushroom components can be improved by this pretreatment operation. In the pretreatment, a means for weakening or destroying the hydrogen bond of the mushroom cell wall may be applied as appropriate. Examples of means for weakening or breaking the hydrogen bond at this time include hypochlorite, perchlorate, sulfonate, perfluorosulfonate, caustic soda, various kinds of oxidized lj, or DMSO. Examples thereof include organic solvents such as DMF. Among them, sodium hypochlorite and DMSO are preferable examples.

[0031] The raw material and treated water of about twice the amount of the raw material are supplied to the processing vessel 10, and the stirring motor 30 is driven to stir and mix the raw material and water with the propeller 28 to form a slurry. (Step 1 1). This slurrying operation can be performed in advance outside the processing vessel. For treated water, raw water (new water) and reused water are used at a prescribed ratio according to the situation. If there is no reuse water, use only raw water. Next, after the processing container 10 is sealed, the heat exchanger 40 is operated to set a predetermined pipe. The temperature of the slurry in the inside is raised with a hose and held at a predetermined temperature for a predetermined time (extraction time). The extraction time is about 10 to 60 minutes depending on the type of mushrooms cultivated, the amount treated, and other conditions. The mixing process is also performed in the second and third stages (Step 21, Step 31). Since the slurry has already been slurried, the mixing operation can be light.

Next, the inside of the processing container 10 is pressurized and heated to perform each extraction processing step. In the primary treatment process, for example, the temperature is set to 140 ° C or higher and 160 ° C or lower, and components containing a large amount of α-glucan are extracted (step 12). In the secondary treatment process, for example, the temperature is set to 170 ° C. or higher and 210 ° C. or lower, and a component containing a large amount of β-gnolecan is extracted (step 22). Further, in the tertiary treatment process, for example, the temperature is set to 220 ° C. or higher, and components derived from chitin are extracted (step 32). In addition, the wood component mainly consisting of turbid lignin is extracted with pressurized hot water at 120 ° C to 140 ° C, so this step is preliminarily performed to remove this unnecessary component in advance. Even if you do it.

[0033] In some cases, when an alkali is used for the pressurized hot water, the extraction operation can be performed more efficiently. It is also effective to add, for example, NaBH, etc. to this aqueous alkaline solution in order to prevent polysaccharide degradation and molecular weight reduction due to the peeling reaction from the reducing end during extraction.

Four

is there. In the treatment, the mushroom raw material may be washed with ketone or alcohol in advance.

[0034] After performing extraction processing for a predetermined time at each predetermined temperature, the heat exchanger is operated to the cooling side, and the temperature is decreased at the same rate as the temperature increase. When conditions suitable for discharging the internal slurry are reached, the pressure is reduced to normal pressure, the discharge valve is opened, the slurry pump 13 is operated, and the slurry is transferred to the first separator 14. Here, for example, the solid and liquid are separated by a filter press (step 13, step 23, step 33). If it is a solid formation separated in the primary treatment, the secondary treatment process is carried out, and if it is a solid component separated in the secondary treatment, it is charged into the treatment vessel 10 to carry out the tertiary treatment process. The separated solid component of the tertiary treatment is reused as a raw material when there is a large amount of residual effective component, but is usually discarded (step 35). In the case of a filter press, the solid component is 30. Contains about / o water. On the other hand, the liquid component is transferred to the stationary tanks that are the second separators 16a, 16b, and 16c through the on-off valves 15a, 15b, and 15c. [0035] Since the stationary tank is not sealed, cooling is promoted by evaporation of the extract and inflow of outside air. When each extract is allowed to stand for a predetermined time, it is separated into several layers as shown in the figure (Steps 14, 24, and 34). That is, in the first-stage solid-liquid separation process, when the temperature is lowered to 50-60 degrees in a short time after extraction, the liquid and solid layers are separated. The liquid layer contains monognolecan and protein. This liquid layer is transferred from the supernatant liquid discharge pipe 50 to the reuse water tank 50a by the pump 56, and is prepared for reuse as makeup water for the first stage extraction. This process is repeated, and when it is determined that a-gnolecan has reached a predetermined concentration, it is transferred to the product tank 60a and purified. The solid phase is transferred to the processing vessel 10 for solid phase extraction from the first separator 14 and at any time second stage extraction.

[0036] In the second-stage solid-liquid separation step, the second separator 16b is allowed to stand until it reaches around 60 ° C, and is separated into three layers when placed for a predetermined time (for example, 24 hours). The lower layer is a wood waste component, the middle layer is a white beta-glucan precipitation component, and the upper layer is a liquid layer containing beta-glucan. Precipitated components are transferred to product tank 60b for purification. The upper liquid layer is transferred from the supernatant discharge pipe 50 to the reused water tank 50b by the pump 56, and prepared for reuse as make-up water for the second stage extraction. Solid components such as wood chips from the lower layer are transferred to the processing vessel 10 for the third stage extraction together with the solid components from the first separator 14.

[0037] In the third-stage solid-liquid separation step, when the second separator 16c is allowed to stand until it reaches a predetermined temperature, it is separated into a solid component and a liquid layer. The liquid layer contains chitin chitosan. The liquid layer is transferred from the supernatant liquid discharge pipe 50 to the reuse water tank 50c by the pump 56, and is prepared for reuse as make-up water for the first stage extraction. By repeating this, when it is determined that the chitin chitosan has reached a predetermined concentration, the chitin chitosan is transferred from the product liquid tank 60c to the refining device 62c to be purified and concentrated. Since the solid content contains organic matter, it is effectively utilized by, for example, composting.

[0038] The reused water stored in the reused water tanks 58a, 58b, 58c is returned to the treated water supply line 24 from the reused water supply line 20, and mixed with fresh water as appropriate or according to circumstances. Used for processing at the same temperature. This is because reused water contains unique components at each temperature, and it is disadvantageous to mix the separated components. For the same reason, the reuse water supply line 20 is preferably provided separately as in the case of FIG.

[0039] Through the above steps, effective mushrooms can be obtained from mushroom cultivation waste fungi beds that have been difficult to treat with conventional methods. Co-components can be extracted and used. In addition, woody components such as sawdust, hemicellulose, and lignin contained in the mushroom cultivation waste fungus bed, especially lignin components can be extracted and removed, so the remaining mushroom cultivation waste after the extraction of mushroom components It became easy to ferment the fungus bed (residue). Therefore, mushroom cultivation waste fungi beds can be used in multiple ways, such as using this residue as compost, obtaining alcohol from it, and using it as energy for fuel cells.

Next, the balance of treated water in the treatment process of the above embodiment will be described with reference to FIG. The numerical values shown in FIG. 4 are an example calculated for the processing container 10 for processing 50 kg of waste bacteria bed in one batch based on the data obtained by the inventors from experiments and the like.

[0041] The waste microbial bed 50 kg as a raw material contains 22 kg of solid content and 28 kg of moisture. In the first treatment, 100 kg of extracted water is supplied to the raw material to make a slurry, which is then subjected to pressurized hot water treatment. The slurry that has undergone the primary treatment at 150 ° C is separated into 70 kg of solid content (concentrated slurry) and 80 kg of liquid content in the first separator 14. After standing in the second separators 16a, 16b, and 16c, the liquid component can be separated into about 1 to 2 kg of mushroom component liquid 44, which is subjected to purification treatment such as concentration and drying. The reused water tank returns 78-79 kg of the supernatant liquid separated after standing in the second separators 16a, 16b, 16c, which is reused in the primary treatment of another batch. Therefore, in the primary treatment, about 21-22kg of fresh water is required for each batch. The power explained for the primary treatment In the case of the secondary treatment and 3 o'clock treatment, as can be understood by referring to Fig. 1, basically the same water saving efficiency can be obtained.

[0042] Thus, according to the present invention, compared to the conventional case, it is reduced to about 1 / new hydraulic power required for one batch of processing. As a result, the cost for obtaining new water and the cost for treating wastewater can be greatly reduced, and the practicality of the method for treating mushroom waste fungus beds by the pressurized hot water treatment method can be improved. it can. Of course, water is deteriorated by the extraction process, so it is necessary to manage it by measuring the deterioration component. Note that the number of the second separators 16a, 16b, 16c used at one temperature for one processing container 10 may be one as long as the processing timing matches. If the processing vessel 10 and the second separators 16a, 16b, 16c have different processing cycles, a plurality of units may be provided accordingly.

FIG. 5 shows a pressurized hot water treatment apparatus according to another embodiment of the present invention. This is a complete batch type in which solids are discharged from the processing vessel 10 for each treatment, whereas this is the case where the solid components remain in one processing vessel 10 at three temperatures. It is a semi-batch type that continues processing. That is, in this method, solid-liquid separation that is the role of the first separator 14 is performed in the processing vessel 10. For this purpose, a filtration means (filter) 64 is provided in the vicinity of the discharge port 26 of the processing container 10. The discharge line 12 of the processing vessel 10 is not provided with the first separator 14, but is provided with second separators (stationary tanks) 16a, 16b, 16c for the respective temperatures. A heat exchanger 66 is provided to exchange heat between the fresh water or recycled water and the slurry.

In this processing apparatus, the mixing and extraction processes are the same as in the previous case, but the solid-liquid separation is performed in the processing container 10. This is performed, for example, by a method in which the slurry is pressurized with a force opposite to the filter. Only the liquid component that has been separated into solid and liquid is discharged and sent to the stationary tanks 16a, 16b, and 16c at the respective temperatures via the open / close valves 15a, 15b, and 15c. The stationary tank and the subsequent steps are the same as in the previous case.

In this embodiment, since the solid content is not discharged from the processing container 10 each time, the labor of the work can be saved and the temperature of the solid content can be prevented from being lowered.

[0045] In the processing container 10, the processing water may be supplied from the bottom of the container, and the processed liquid may be discharged from the top. In addition, the component liquid and the supernatant liquid were separated by standing in the second separator, but other appropriate methods can be employed.

Brief Description of Drawings

FIG. 1 is a view showing a pressurized hot water treatment apparatus according to a first embodiment of the present invention.

FIG. 2 (a) and (b) are diagrams showing a second separator, respectively.

FIG. 3 is a flowchart showing processing steps in the first embodiment.

FIG. 4 is a diagram showing the balance of the treated product and treated water in the first embodiment.

FIG. 5 is a view showing a pressurized hot water treatment apparatus according to the first embodiment of the present invention.

Explanation of symbols

[0047] 10 processing vessel

14 First separator a, 16b, 16c Second separator Reuse water supply line

Treated water supply line crusher

Heat exchanger

Supernatant

Mushroom component liquid

a, 58b, 58c Reuse water tank

Claims

The scope of the claims

[1] An extraction process for extracting mushroom components in contact with pressurized hot water on a mushroom cultivation waste bed,

And a separation step of separating the solid component from the extraction liquid after completion of the extraction step, wherein the extraction liquid after completion of the separation step is reused as pressurized hot water in the extraction step. Method.

[2] Change the temperature of pressurized hot water to the mushroom cultivation waste fungus bed, perform the extraction process in multiple stages, and reuse the extracted liquid after each separation process for each extraction process at each temperature The pressurized hot water treatment method according to claim 1, wherein:

[3] The separation step includes a first-stage separation step of separating the mushroom cultivation waste fungus bed from the extract.

3. The pressurized hot water treatment method according to claim 1 or 2, further comprising a second stage separation step in which the extract is allowed to stand and a mushroom component is separated by a difference in specific gravity.

[4] An extraction processing apparatus for extracting mushroom components in a state in which pressurized hot water is in contact with the mushroom cultivation waste fungus bed,

Separation apparatus for performing a separation process for separating solid components from the extracted liquid after the extraction process, and reused water supply for reusing the extracted liquid after the separation process as pressurized hot water in the extraction processing apparatus And a pressurized hot water treatment apparatus.

[5] The separation device includes first stage separation means for separating mushroom cultivation waste fungus beds from the extract.

5. The pressurized hot water treatment apparatus according to claim 4, further comprising second-stage separation means for allowing the extract to stand and separating mushroom components based on a difference in specific gravity.

[6] The extraction processing device performs the extraction process in a plurality of stages by changing the temperature of the pressurized hot water with respect to the mushroom cultivation waste fungus bed, and the second stage separation means is at each temperature. 6. The pressurized hot water treatment carrier device according to claim 5, wherein the pressurized hot water treatment carrier device is provided for each extraction step.

[7] The pressurized hot water treatment apparatus according to any one of claims 4 to 6, wherein the reused water supply line is provided with a reused water tank for storing reused water. Carrying equipment.