JP2004351307A - Apparatus for separating and extracting shell-meat extract, shell-meat, and shell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to separate periphyton such as mussel or barnacle, which is waste discharged from power stations, into shell-meat extract, shell-meat decomposition product and shell. <P>SOLUTION: An apparatus for separating and extracting shell-meat extract, shell-meat and shell, comprises: a colander-shaped container 1 for storing shells discharged from cooling-water passage or the like; a cracking-machine 2 for cracking shells; an extract extraction pot 3 for extracting shell extract; a decomposition product extraction pot 4 for dissolving shell-meat with enzyme or the like; a heater 5 for heating a warm water within the extract extraction pot and the decomposition product extraction pot; a filter for removing solid material from the extract; a shell storage tank 8 for storing shells from which shell-meats have been removed; and a concentrator for reducing the volume of both the extract and the decomposition product. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technique for separating and extracting shellfish extract, shellfish decomposed matter, and shells from mussels removed from mussels generated in cooling channels of thermal power plants and nuclear power plants, etc., which are located on a coast and use seawater as cooling water. Things.
[0002]
[Prior art]
Shells such as mussels adhere to and grow on the cooling water intake pipes of thermal and nuclear power plants, and if left untreated, they will interfere with water intake. For this reason, the power plant cleans the cooling water channel system during periodic inspections and the like to remove attached organisms (generation of removed shellfish).
The large volume of shellfish that is generated is disposed of by landfills or incinerated by businesses because it exceeds the processing capacity of local governments in order to treat it as general waste. In recent years, it has become difficult to secure landfill disposal sites and perform incineration that emits offensive odors, and there is an urgent need to reduce the amount of waste by using the removed shellfish as a resource.
As for the effective use of the removed shellfish, some of the shellfish has been used as a cement raw material or as a soil conditioner. As for shellfish, attempts have been made to compost it with shells, but no effective utilization measures have been developed that will reduce the cost of removing shellfish.
[0003]
Regarding the recycling of the shell portion of shellfish removed from power plants, it has recently been found that, for example, an extract extracted from mussel shellfish has a feeding promoting effect on fish (Patent Document 1). On the other hand, fish meal using sardines as a raw material for aquaculture compound feed has become extremely short in recent years, and a compound feed mixed with alternative proteins will be required in the future. In high-mix feeds of alternative proteins, fish do not consume enough. Therefore, the extract of the removed shellfish is used as an additive for the compounded feed (Japanese Patent Application No. 2002-130881), and the remaining shell meat after the extraction is also used as the compounded feed, so that the shellfish portion of the removed shellfish can be recycled. Waste treatment costs can be reduced. In order to realize such an effective utilization measure, a device capable of efficiently extracting mussel mussel extract and the like from the shellfish removed from the power plant is required, and its development is required.
[0004]
[Patent Document 1]
JP-A-11-28061
[Problems to be solved by the invention]
Conventionally, shells such as mussels removed from cooling waterways of power plants have been treated as waste. An object of the present invention is to develop an apparatus for efficiently separating a shellfish extract used as a feed promoting substance, a shellfish protein used as a feed material, and a shell used as a water purification material from these removed shellfish.
The apparatus of the present invention can efficiently separate the shellfish extracted from the power plant etc. into shellfish extract, shellfish protein, and shells, reducing the waste disposal cost and utilizing it for zero power station waste emissions. it can.
[0006]
[Means for Solving the Problems]
The apparatus for separating and extracting shellfish extract, shellfish, and shells of the present invention is a device that separates and extracts useful extracts, shellfish decomposition products, and shells from shellfish, such as mussels generated in cooling water channels of power plants, etc. A colander-shaped container for storing the removed shellfish, a crushing means for crushing the shell of the removed shellfish, an extraction means for extracting a shellfish extract from the crushed removed shellfish, a decomposed substance extracting means for decomposing and separating shell meat with enzymes, and Means for discharging the shell from which the shell meat has been removed, and further, a heater for heating the extract of the extract extraction means and the decomposition product extraction means as needed, and storing the shell from which the shell meat has been removed. It is characterized by comprising a shell storage device.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The processing of the removed shellfish by the separation and extraction device of the present invention is performed by the following steps. First, the attached shellfish collected from a cooling channel or the like of a power plant is placed in a colander-shaped container, which is a collection container, to separate seawater and muddy water accompanying the collection. Next, the shell is crushed, and hot water is added to extract the shell meat extract. After the extract is extracted, a proteolytic enzyme such as papain or the like is added to decompose the shellfish, thereby separating the shellfish decomposition product from the shell. The separated shells are further broken if necessary. These are shown schematically in FIG.
[0008]
From the above, in the apparatus of the present invention, a colander-shaped container for storing the collected shellfish, crushing means for crushing the shell of the shell, extraction means for extracting the shellfish extract from the crushed shell, enzyme, etc. Each of the decomposition product extraction means for decomposing / separating, the heater for heating the extract of the extraction means and the extract of the decomposition product extraction means, and the shell container for storing the shells from which the shell meat has been removed are provided separately. May be provided, or one or more may be provided in combination. That is, the monkey container containing the removed shellfish is inserted into an extraction pot as an extract extraction means, the removed shellfish is crushed in the monkey container, and the crushing step and extract extraction are performed so that the shellfish extract is extracted. The process may be carried out in the same device (extractor). Further, the shellfish decomposition step may be performed in an extractor.
[0009]
In order to carry out the subsequent steps with the collected shellfish in the colander-shaped container as described above, removal of seawater etc. accompanying the removed shellfish at the time of shellfish collection and decomposition of extract and shell meat at the time of extract extraction In order to allow the decomposed product to flow out of the container at the time, a metal container having a large number of holes such as round or rectangular holes, such as a wire mesh container or lath metal, is used. The attached shells of mussels such as mussels are small, 1 cm or less in length, and flat fan-shaped, 10 cm or more in length, and some are broken at the time of collection. It is preferable to use a hole having a size of about 1 to 3, and usually a hole having a diameter of about 1 to 3 mm. The shape of the colander-shaped container can be a bottomed cylinder or a rectangular cylinder, but a cylinder is particularly preferred. The bottom surface of the container may be flat, but is preferably curved like a pan bottom type.
[0010]
The crushing of the removed shellfish may be performed by transferring from the colander-shaped container to another container or the like, but is preferably performed in the colander-shaped container. Since part of the shellfish extract may be lost when the shellfish is crushed, it is preferable to insert a colander-like container into an extract extraction container (extraction pot). The means of crushing shellfish are either crushed by a crusher equipped with a pressure plate such as a disk at the end of a cylinder (arm) that expands and contracts like a press machine, or crushes shells with a pestle that moves up and down like a rice cake milling machine May be performed using a crusher. The pressure plate may have a diameter slightly smaller than the inner diameter of the crushing vessel (collar vessel or extraction pot), and the tip may be rounded like a pan bottom type like the inner bottom face of the colander vessel. In the latter case, the size of the punch is not particularly limited. However, when the diameter is smaller than the inner diameter of the crushing container such as a colander-shaped container, the container or the punch may be rotated. Since the container serves as a press machine or a die, it should have some strength. Moreover, it is good to comprise so that the strength of the colander-shaped container at the time of shellfish crushing may be reinforced by the extract extraction container.
[0011]
Extraction of the shellfish extract is performed using an appropriate amount of warm water. In addition to supplying hot water to the extraction pot, the extraction pot may be heated. Crushed shells may be mixed in the shell meat extract from the extractor, so a filter is provided to remove them. The removal of solids such as shells by a filter may be provided near the outlet at the bottom of the extractor, or may be performed separately after the extract is once transferred to a storage container. For discharging the extract from the extractor, a discharge port may be provided at the bottom of the extractor, or the extractor may be inclined to allow the extractor to flow out of the upper opening of the kettle. In the latter case, a lid such as a wire mesh may be placed on the opening surface of the extraction pot so that the shell does not spill.
[0012]
As a decomposition product extraction means for decomposing / separating shellfish with enzymes, etc., a decomposition treatment may be performed by introducing a protease such as papaya into an extraction pot after extraction of shellfish extract, or separately provided. The colander-shaped container may be transferred to the decomposition product extraction pot. It is preferable to carry out the decomposition in the digestion tank in view of washing the extraction tank. An appropriate amount of warm water is added to the decomposition product extraction pot, but a means for heating the decomposition product extraction pot may be provided as necessary. The decomposition product extraction vessel may be provided with a lid if necessary, and may be provided with a device for stirring the contents.
[0013]
For the decomposition of shellfish, a proteolytic enzyme is mainly used for the subsequent use of the decomposition product, but the decomposition may be performed using an alkali such as caustic soda. Decomposition is usually carried out until it becomes a liquid or slurry, and the same treatment as in the case of discharging the extract is carried out, and then discharged from the decomposed product extraction kettle. After the decomposition products are removed, the remaining crushed shells are left as they are, or if necessary, washed with water, and transferred to a shell container for storing shells. The decomposed product is dehydrated and dried and stored for later use.
[0014]
In the apparatus of the present invention, when the colander-shaped container is used in the shellfish crushing step, the extract extraction step, and the shellfish decomposition step, the colander-shaped container is usually lifted, and a traveling crane or rail provided near the ceiling of a factory or the like. After being suspended at a predetermined position and subjected to a predetermined process, it is lifted and moved to the next step. Separately, the colander-shaped container is simply lifted and suspended, and the extractor is moved. You may make it.
[0015]
【Example】
Hereinafter, an example in which 100 kg of mussel is treated is described, but the present invention is not limited thereto.
After washing a mixture of the removed shellfish (Murasaki mussels) and mud separated and removed from the water channel of the power plant with water, the colander-shaped container (1) was moved and attached to the extractor (3) as shown in FIG. In this state, 100 kg of the removed shellfish (A) was stored in the colander-shaped container (1). The colander-shaped container (1) is made of stainless steel and has a structure in which a large number of circular or rectangular holes are formed on the wall surface or the bottom at a ratio of open area / non-open area of 1/3 to 1/2. Was used. Next, after the removed shellfish is stored in the colander-shaped container (1), the crusher (2) is moved right above the colander-shaped container (1), the arm (21) is extended, and the pressure plate (22) at the tip is extended. ) Was lowered to apply pressure to the removed shellfish, thereby crushing the removed shellfish into 4-5 mm square fragments. After the crushing is completed, the crushing machine (2) contracts the arm (21) and moves to a position where it does not hinder the movement of the colander-shaped container (1) from the extractor pot (3) to the decomposition product extractor (4). Let it.
[0016]
60 L (liter) of hot water at 50 ° C. was poured into the extractor (3) from the water heater. The warm water injected into the extraction pot (3) penetrates into the container (1) through the hole of the colander-shaped container, and immerses the crushed and removed shellfish. The heater (5) attached to the extractor (3) was operated to maintain the hot water in the extractor (3) at 50 ± 5 ° C., and the extract was extracted for 30 minutes. Next, the extractor was extracted by operating the heater (5) and maintaining the hot water in the extraction pot (3) at 90 ± 5 ° C.
The extract extracted in the extractor (3) was stored in the extract storage tank through a drain (31) at the bottom of the kettle and through a filter (6) equipped with a 35-mesh filter (see FIG. 3). The extract stored in the extract storage tank was sent to a concentrator and concentrated 12 times (until the volume became 5 L).
[0017]
On the other hand, regarding the shell meat and shells remaining in the colander-shaped container (1), the colander-shaped container (1) is detached from the extractor (3) and attached to the decomposition product extractor (4). Perform separation processing. The colander-shaped container (1) is moved by moving the arm (11) of the crane along the rail (9) of the overhead crane. Fifteen liters of 60 ° C. hot water was injected from the water heater into the decomposition product extraction pot (4). The warm water injected into the kettle (4) penetrates into the colander-shaped container (1) and immerses the crushed and removed shellfish. Further, 30 g of the protease papain was added, and the mixture was stirred for 15 minutes with the stirrer (7) while maintaining the hot water at 60 ± 5 ° C. with the heater (5). By this decomposition treatment, the shell portion of the removed shellfish was dissolved and flowed into the decomposition product extraction pot (4), and only the shell remained in the colander-like container (1). The decomposed product in the decomposed product extraction pot (4) is discharged from the outlet (41) at the bottom of the pot as in the case of the extract.
[0018]
The stirrer (7) is moved up and down along the pole (71). After the stirring, the stirrer (7) is rotated around the pole (71) and moved to a position away from the decomposition product extraction pot (4).
After the decomposition process, the colander-shaped container (1) is detached from the decomposition product extraction pot (4) and moved to a position directly above the shell storage container (8). Here, the colander-shaped container (1) was inverted, and the shell (B) inside was discharged to the shell storage container (8).
[0019]
Each of the above steps is shown in FIG. As shown in FIG. 3, the extract obtained from the extractor (3) is filtered to remove solids, and then concentrated and dried to obtain a powder or granules, which are used as a feed promoting substance. The shellfish solution from the digestion extractor (4) is also concentrated and dried in the same manner as the extract to obtain granules or plate-like solids, which are used as feed materials. The remaining shells are further crushed and fired if necessary, and used as calcium raw materials, water treatment materials, adsorbents and the like.
[0020]
【The invention's effect】
As described above, the present apparatus can efficiently and easily separate shellfish and shells from the attached shellfish, which has been treated as power station waste, and can eliminate shellfish components and shells. Both can be separated into a state that can be used later. Therefore, the shell meat can be effectively used as an additive for fish feed, and the shell can be used as a calcium component or a water purification material. By effectively utilizing the removed shells of the power plant using this device, it is possible to reduce the waste disposal cost at the power plant and to achieve zero emissions of the power plant waste.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an outline of a method for treating a removed shellfish according to the present invention.
FIG. 2 is a schematic view showing one embodiment of the device of the present invention.
FIG. 3 is a process chart showing the processing steps of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Colander-shaped container 2 Movable crusher 3 Extraction kettle 4 Decomposition extractor 5 Heater 6 Filter 7 Stirrer 8 Shell container

Claims (6)

A device that separates and extracts useful extracts and decomposed products and shells from shells of mussels generated in cooling water channels of power plants, etc., a colander-shaped container that stores the collected shells, crushing means for crushing shells of shells, An apparatus for extracting and extracting shellfish extract, shellfish and shells, comprising: an extract extraction means for extracting shellfish extract from crushed and removed shellfish; and a decomposition product extraction means for decomposing and separating shellfish with enzymes and the like. . A container for storing the removed shellfish, a crusher for crushing shells, an extractor for extracting shellfish extract, a digestion extractor for dissolving shellfish with enzymes, etc. 2. The extraction device according to claim 1, comprising a heater, a filter for removing solid matter from the extract, a shell container for storing shells from which shell meat has been removed, and a concentrator for reducing the volume of extracts and decomposition products. Since the colander-shaped container for storing the removed shellfish is moved and attached to the extractor and the digestion extractor in order, and after the extraction and extraction of the digestion product are completed, the shell is discharged to the shell container. The extraction device according to claim 2. The crusher is moved above the colander-shaped container attached to the extractor, and the pressure plate provided at the lower end of the crusher is lowered from the opening surface of the colander-shaped container toward the bottom surface. The removed shellfish can be crushed by applying pressure, regardless of the size of the shellfish, and after crushing, the pressure plate can be raised and moved to a position where it does not hinder when the colander-shaped container is attached to or detached from the extractor 3. The extraction device according to claim 2, wherein the extraction device is movable. It has a pan-bottom wide mouth cylindrical shape that is convenient for carrying in the removed shellfish and integrated with the extractor pot, and serves to store the removed shellfish in the processing process from crushing of the removed shellfish to extraction of the extract and decomposition product. A movable colander-shaped container having strength enough to withstand the pressure of a pressure crusher and having a perforated structure on the bottom and side surfaces that allows easy entry of hot water. A method for removing shellfish extracts and shellfish decomposition products in an extractor and a decomposition product extractor using the apparatus according to any one of claims 1 to 4, after storing the removed shellfish in a colander-shaped container.

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