JP4850293B2 - Processing method and system for marine shellfish - Google Patents

Description

  The present invention relates to a method and a system for treating marine shellfish adhering to a screen or intake channel of a seawater intake port of a power plant or the like.

  In recent years, it has been proposed to effectively use marine shellfish adhering in large quantities to screens and intake channels of seawater intakes of power plants and the like. For example, in Patent Document 1, a salt-removing apparatus that removes adhering salt by washing shellfish to obtain demineralized shellfish, a crushing apparatus that crushes demineralized shellfish to obtain coarse fragments, and heats coarse fragments Heat drying apparatus to obtain a semi-fired piece by drying, and calcining the semi-fired piece on a moving bed type base provided in a furnace chamber extending in a predetermined plane path to obtain calcium oxide, and other constituent materials A marine shellfish processing system comprising a resistance electric furnace that incinerates and a bagging device that collects calcium oxide and seals it in a storage bag is disclosed.

  By the way, in order to bake marine shells collected from power plants, etc., and obtain calcium oxide with excellent quality, organic matter and salt contained in shellfish in marine shellfish, seaweed collected together with marine shellfish, It is necessary to remove impurities such as sludge in advance.

  In the said patent document 1, since shellfish are washed and then crushed, the shellfish in shellfish remain. There is a possibility that the quality of calcium oxide as a final product may be deteriorated by the organic matter and salt contained in the remaining shellfish. Moreover, there is a risk that the components of the processing system may be corroded by the organic matter or salt contained in the remaining shellfish. These make it difficult to make effective use of marine shellfish.

  This invention is made | formed in view of such a situation, and it aims at providing the processing method and system of marine shellfish which can aim at the effective utilization of marine shellfish.

The method for treating marine shellfish according to the present invention includes a crushing process in which a crusher crushes marine shellfish containing shellfish introduced from the outside into a shell piece, and the washing machine uses the shellfish to A cleaning step for cleaning while removing the body, a drying step for drying the washed shellfish pieces by a drying furnace, and a firing step for obtaining calcium oxide by firing the dried shellfish pieces by a firing furnace. It is characterized by that.

According to the method of the present invention, marine shellfish including shells introduced from the outside are crushed by a crusher to form shell pieces, and the crushed shell pieces are washed while removing shells with a washing machine. Therefore, organic matter and salt contained in shellfish in shellfish are removed cleanly. And since the washed shellfish pieces are dried in a drying furnace, and the dried shellfish pieces are baked in a baking furnace, calcium oxide is obtained, so that the quality of the obtained calcium oxide is excellent. Become. Moreover, since the organic matter and salt contained in the shellfish in the shellfish are removed cleanly as described above, there is less possibility of corroding the components of the system that implements the method of the present invention. By these, true effective utilization of marine shellfish can be aimed at.

According to a second aspect of the present invention, after the baking step, calcium hydroxide is obtained by causing the humidified kneader to continuously hydrate the calcium oxide that has been baked in the baking furnace and discharged quantitatively. It is preferable to provide a hydration reaction step.

According to invention of Claim 2, after the said baking process, calcium hydroxide calcined in the said baking furnace and discharged | emitted quantitatively is continuously hydrated with a humidification kneader, and thereby calcium hydroxide is obtained. Since it is obtained, the quality of the obtained calcium hydroxide is excellent.

  According to a third aspect of the present invention, it is preferable to provide a storage step before the crushing step, in which the shellfish are stored in a storage container for a set period to remove the shellfish and reduce the volume.

  According to the invention described in claim 3, before the crushing step, the shellfish are stored in a storage container for a predetermined period of time, so that the shellfish are rot-removed and reduced in volume. The contained shellfish will be processed, and the processing efficiency will be improved.

The marine shellfish processing system according to the present invention includes a crusher for crushing marine shellfish including shells introduced from the outside, and a washing machine for washing the crushed shell pieces while removing the shellfish. A drying furnace for drying the washed shellfish pieces, a firing furnace for obtaining calcium oxide by firing the dried shellfish pieces, and the calcined and quantitatively discharged calcium oxide continuously water. And a humidifying kneader that obtains calcium hydroxide by a sum reaction.

According to the system of the present invention, marine shellfish including shells introduced from the outside are crushed by a crusher to form shell pieces, and the crushed shell pieces are washed while removing shells with a washing machine. Therefore, organic matter and salt contained in shellfish in shellfish are removed cleanly. And since the washed shellfish pieces are dried in a drying furnace, and the dried shellfish pieces are baked in a baking furnace, calcium oxide is obtained, so that the quality of the obtained calcium oxide is excellent. Become. Moreover, since calcium hydroxide calcined in the calcining furnace and quantitatively discharged is continuously hydrated by a humidifying kneader, calcium hydroxide is obtained. Quality is excellent. Furthermore, since the organic matter and salt contained in the shellfish in the shellfish are removed cleanly as described above, there is less risk of corroding the components of the system of the present invention. By these, true effective utilization of marine shellfish can be aimed at.

  As in the invention described in claim 5, the crusher includes a plurality of rolls with demon teeth, and is configured to crush shellfish with the rolls by rotating and driving while sprinkling water on the rolls. Is preferred.

  According to the invention of claim 5, the crusher is provided with a plurality of rolls with demon teeth, and the rolls are rotated while being sprinkled so that the shells are crushed by the rolls. The shellfish can be easily washed in the process, and a particle size suitable for firing the shellfish can be obtained. Furthermore, since the roll is rotated while being sprinkled, the calcium component of shellfish is prevented from sticking to the roll, and the crusher can be operated stably.

  According to a sixth aspect of the present invention, the cleaning machine includes a cylindrical container in which a substantially lower half of the inclined body forms a water tank portion, and a ribbon screw blade that is axially provided along the extending direction of the cylindrical container. And agitating and washing the shell pieces introduced into the lower part of the cylindrical container in the water tank portion by the ribbon screw blades, and further spraying the washed shell pieces from the intermediate part of the cylindrical container. However, it is preferable to be configured so as to be sequentially taken out from the upper part by being conveyed toward the upper part.

  According to a sixth aspect of the present invention, the washing machine includes a cylindrical container in which a substantially lower half of the inclined body forms a water tank portion, and a ribbon screw blade that is axially provided along the extending direction of the cylindrical container. And the shell pieces introduced into the lower part of the cylindrical container are stirred and washed in the water tank portion by the ribbon screw blades, and the washed shell pieces are further removed from the intermediate part of the cylindrical container. Since it is sequentially taken out from the upper part by being transported toward the upper part while being sprinkled, salt, sludge, suspended substances, etc. adhering to the shellfish are effectively removed by this washing.

  Preferably, at least one of the drying furnace and the baking furnace is a resistance electric furnace.

  According to the seventh aspect of the present invention, since at least one of the drying furnace and the firing furnace is a resistance electric furnace, temperature management in the furnace becomes easy. Thereby, the quality of the calcium oxide and calcium hydroxide obtained can be made more excellent. Moreover, there is no generation of CO2.

  As in the invention described in claim 8, the exhaust heat of at least one of the drying furnace and the baking furnace is recovered by a separately prepared heat exchanger, and returned to the furnace as blown air preheating. It is preferable that it is comprised.

  According to the eighth aspect of the present invention, exhaust heat of at least one of the drying furnace and the firing furnace is recovered by a separately prepared heat exchanger, so that the blown air is preheated into the furnace. Since it is returned, power saving can be achieved.

  As in the invention described in claim 9, the drying furnace is preferably a rotary kiln type drying furnace.

  According to the ninth aspect of the present invention, since the drying furnace is a rotary kiln type drying furnace, the drying furnace can be continuously operated, thereby improving the processing efficiency.

  As in the invention of claim 10, it is a hearth rotary firing furnace comprising a circular furnace chamber that is composed of an upper lid, a fuselage, and a hearth, and each component is fireproof and insulated. preferable.

  According to the invention of claim 10, since it is a hearth rotary firing furnace comprising a circular furnace chamber that is composed of an upper lid, a fuselage, and a hearth, and each component is fireproof and heat insulating construction, The firing furnace can be operated continuously, thereby improving the processing efficiency.

  The heat-resistant steel member constituting the inside of the firing furnace is preferably subjected to a surface coating treatment.

  If the heat-resistant steel member constituting the inside of the firing furnace is subjected to a surface coating treatment, chromium precipitation from the steel material can be prevented and the stable operation of the firing furnace can be continued.

  As in the invention of claim 11, the humidifying kneader comprises a cooler for cooling the calcium oxide discharged from the baking furnace, and a hopper for quantitatively discharging the cooled calcium oxide, It is preferable that calcium hydroxide is obtained by continuously hydrating the calcium oxide discharged quantitatively.

  According to invention of Claim 11, the calcium oxide discharged | emitted from the said baking furnace is cooled with a cooler, About this calcium oxide with which this cooled calcium oxide was discharged | emitted quantitatively from the hopper, with the said humidification kneader By continuously performing the hydration reaction, high-quality calcium hydroxide can be obtained.

According to the method of the present invention, marine shellfish including shells introduced from the outside are crushed by a crusher to form shell pieces, and the crushed shell pieces are washed while removing shells with a washing machine. Therefore, organic matter and salt contained in shellfish in shellfish are removed cleanly. And since the washed shellfish pieces are dried in a drying furnace, and the dried shellfish pieces are baked in a baking furnace, calcium oxide is obtained, so that the quality of the obtained calcium oxide is excellent. Become. Moreover, since the organic matter and salt contained in the shellfish in the shellfish are removed cleanly as described above, there is less possibility of corroding the components of the system that implements the method of the present invention. By these, true effective utilization of marine shellfish can be aimed at.

According to the system of the present invention, marine shellfish including shells introduced from the outside are crushed by a crusher to form shell pieces, and the crushed shell pieces are washed while removing shells with a washing machine. Therefore, organic matter and salt contained in shellfish in shellfish are removed cleanly. And since the washed shellfish pieces are dried in a drying furnace, and the dried shellfish pieces are baked in a baking furnace, calcium oxide is obtained, so that the quality of the obtained calcium oxide is excellent. Become. Moreover, since calcium hydroxide calcined in the calcining furnace and quantitatively discharged is continuously hydrated by a humidifying kneader, calcium hydroxide is obtained. Quality is excellent. Furthermore, since the organic matter and salt contained in the shellfish in the shellfish are removed cleanly as described above, there is less risk of corroding the components of the system of the present invention. By these, true effective utilization of marine shellfish can be aimed at.

1 is an overall configuration diagram of a marine shellfish processing system according to an embodiment of the present invention. It is a partial block diagram which shows the detail of pre-processing equipment. It is a partial block diagram which shows the detail of a baking processing equipment. It is a partial block diagram which shows the detail of a hydration reaction processing equipment. It is process drawing of the processing system of marine shellfish concerning this embodiment.

  As shown in FIG. 1, a marine shellfish processing system (hereinafter referred to as the present system) 1 according to an embodiment of the present invention mainly corresponds to a crusher 100, a washing machine 200, and a storage hopper (a storage container). .) Pretreatment equipment 2 provided with 800, firing treatment equipment 3 provided with drying furnace 300 and firing furnace 400, hydration reaction treatment equipment 4 provided with cooler 500, hopper 600 and humidifying kneader 700, It consists of a shipping device 900 and an exhaust gas treatment facility 5. In addition, the conveyance means (pipe, conveyor, etc.) according to a conveyance medium is suitably provided between each installation or each apparatus, and these shall be controlled by the control system which is not shown in figure as needed. .

  As shown in the upper part of FIG. 2, the crusher 100 has a pair of rolls 101 and 101 with devil teeth arranged on parallel axes in the main body 102, and rotates the shells introduced from the upper inlet 103 with a motor 104. The rolls 101 and 101 to be driven are crushed, and the fragments (shells) are discharged from the outlet 105 at the bottom. In addition, by watering with the watering nozzle 106 arranged facing the rolls 101 and 101, the calcium component contained in the shellfish is prevented from sticking to the rolls 101 and 101. The roll 101 may be one or more.

  As shown in the lower part of FIG. 2, the washing machine 200 is provided with a cylindrical container 201 in which a substantially lower half of a trunk inclined upward to the right forms a water tank portion 201 a, and an axial direction along the extending direction of the cylindrical container 201. A ribbon type screw blade 202, a motor 203 that rotationally drives the ribbon type screw blade 202, a watering nozzle 204, an inlet 205, and an outlet 206. The water level of the water tank portion 201a is set at the connection position of the overflow line 207 with the cylindrical container 201. As shown in FIG. 1, this overflow water may be discharged into a pit or may be reused for watering from the watering nozzle 204.

  The shell pieces introduced into the water tank portion 201a at the lower part of the cylindrical container 201 from the inlet 205 are stirred and washed by the ribbon screw blades 202, and then sequentially conveyed toward the upper part of the cylindrical container 201. It is taken out from an outlet 206 at the top of 201. In addition, impurities that could not be removed by stirring and washing in the water tank portion by sprinkling water with a watering nozzle 204 disposed between the middle part and the upper part of the cylindrical container 201 toward the shell pieces to be conveyed. (Seawater, sludge, shellfish) can be removed more reliably.

  As shown in the upper part of FIG. 3, the drying furnace 300 is a rotary kiln type resistance electric furnace capable of continuous drying operation. Although not clearly shown in the figure, the drying furnace 300 is slightly inclined to the right in the figure. A furnace main body 301 is heated by an external heater 302. Then, the shell piece introduced from the inlet 303 is gradually dried and moved to the outlet 304a side while being heated and dried in the furnace body 301 that is rotationally driven by the motor 304, and is taken out from the outlet 304a. Yes.

  Moreover, the odor in the exhaust gas discharged | emitted from the exit header 305 among the header parts provided in the right-and-left both ends of the furnace main body 301 is removed with the catalyst combustion type deodorizing apparatus which is not shown in figure. Further, the exhaust heat of the exhaust gas is recovered by a separately prepared heat exchanger 307 and returned to the inlet header 306 as blown air preheating.

  As shown in the lower part of FIG. 3, the firing furnace 400 includes a circular furnace chamber 404 composed of an upper lid 401, a fuselage 402, and a hearth 403, and each component member is subjected to fireproofing and heat insulation construction. This is a hearth rotary type resistance electric furnace. The hearth 403 is rotated by the lower motor driving device 415, and the shell pieces introduced from the inlet 405 of the circular furnace chamber 404 are sequentially transferred to the circular furnace chamber 404 by a scraper 406 provided in the circular furnace chamber 404. The And by calcining by the several electric heaters 407, 407, ... in the circular furnace chamber 404, calcium oxide (quick lime: CaO) is obtained by decarboxylation from calcium carbonate which is the main component of the shell pieces. Generate. This calcium oxide is spontaneously dropped and discharged from an outlet 408 at the center of the circular furnace chamber 404.

  The heat-resistant steel member constituting the inside of the firing furnace 400 is subjected to a surface coating treatment to prevent corrosion. Further, the exhaust heat of the exhaust gas from the firing furnace 400 is recovered by the heat exchanger 409 provided in the upper part of the firing furnace 400 and returned to the firing furnace 400 as the pre-injection air as in the drying furnace 300. It has become.

  Calcium oxide discharged from the firing furnace 400 is cooled by a cooler 500 provided below the firing furnace 400 and provided with a water cooling jacket 503 as shown from the upper stage to the middle stage of FIG. In the figure, 501 is an inlet, 502 is an outlet, 504 is a cooling water inlet, and 505 is a cooling water outlet. The calcium oxide cooled here is alternately put into the two hoppers 600 provided with the quantitative discharge device 601 and is discharged quantitatively from the hopper 600. The fixed amount discharge device 601 includes, for example, a sensor that measures the discharge amount of calcium oxide and a valve that can adjust the open / close amount in accordance with a signal from the sensor.

  As shown in the lower part of FIG. 4, the humidifying and kneading machine 700 causes calcium hydroxide (slaked lime: Ca) by causing a hydration reaction with respect to calcium oxide that is quantitatively discharged from the hopper 600 by the action of the quantitative discharge device 601. (OH) 2) is obtained. Specifically, a plurality of pedal-shaped stirring blades 702 are arranged on a parallel shaft in a horizontally disposed long main body 701 having a substantially W-shaped cross section provided with a water cooling jacket 703 so as not to interfere with each other. . Then, the shell pieces introduced from the inlet 704 on the upper right side of the main body 701 in the figure are humidified by being poured from the nozzle 706 while being kneaded by the stirring blade 702 rotated by the motor 705. Thereby, a hydration reaction is continuously caused, and the obtained calcium hydroxide is discharged from the outlet 707 at the lower left side of the main body 701. In the figure, reference numeral 708 denotes a cooling water inlet, and 709 denotes a cooling water outlet.

  As shown in FIG. 1, the storage hopper 800 stores the collected shellfish only for a predetermined period, thereby removing the shellfish to rot and reducing the volume. The shipping device 900 is a product for shipping calcium hydroxide obtained by the hydration reaction in the humidifying kneader 700 into a container by an appropriate amount.

  The exhaust gas treatment facility 5 is a facility for sucking exhaust gases from the drying furnace 300, the firing furnace 400, and the hopper 600, leading them to the stack, and releasing them from here. The waste heat of the exhaust gas from the drying furnace 300 is recovered by the heat exchanger 307, and the waste heat of the exhaust gas from the firing furnace 400 is recovered by the heat exchanger 409, as described above. It is as follows.

  Hereinafter, the operation of the system 1 will be described for each step of FIG.

  First, in the storage process, the collected shellfish are stored in the storage hopper 800 for a predetermined period of time, so that the shell of the shellfish is removed and the volume is reduced. In the storage hopper 800, in order to satisfy an environmental condition suitable for the rot of shellfish, water is appropriately sprinkled from a watering nozzle 801 provided on the top, and water is supplied to the watering nozzle 801 from a water tank 802 by a pump 803. The shellfish whose volume has been reduced is sent from the storage hopper 800 to the crusher 100 by the conveyor 804 and enters the crushing process. After the crushing step, the reduced shellfish are processed, and the processing efficiency is improved.

  In the crushing process, when shells are introduced from the inlet 103 at the top of the crusher 100, the shells are crushed between the rolls 101, 101 by the rolls 101, 101 in the main body 102 being rotated by the motor 10. To be shells. This shell is dropped from the outlet 105 at the bottom of the crusher 100 and discharged to the washing machine 200 in the washing process. Thereby, it becomes easy to wash shellfish in the washing step, and a particle size suitable for firing the shellfish in the firing step can be obtained. Also at this time, water is sprayed from the water tank 802 to the rolls 101 and 101 from the water nozzle 106 supplied by the pump 803. By this watering, the calcium component of the shellfish is prevented from sticking to the rolls 101 and 101, and the crusher 100 is stably operated.

  In the cleaning process, shells are put into the water tank portion 201 a below the cylindrical container 201 from the inlet 205 of the cleaning machine 200. The introduced shell pieces are sequentially conveyed toward the top of the cylindrical mold 201 while being stirred and washed in the water tank portion 201a by the ribbon screw blades 202. During the conveyance, the water spray from the water spray nozzle 204 is poured onto the shells from the upper part to the middle part of the cylindrical container 201. The watering nozzle 204 is also supplied with water from a water tank 802 by a pump 803. Then, the washed shellfish piece is taken out from the outlet 206 at the top of the cylindrical container 201. The shells taken out from the outlet 206 are conveyed by the conveyor 208 to the drying furnace 300 in the drying process. At this time, salt, sludge, suspended matter, etc. adhering to the shells are effectively removed.

  In the drying process, the shell pieces introduced from the inlet 303 of the drying furnace 300 are heated and dried in the furnace body 301 that is rotationally driven by the motor 304, and are gradually moved to the outlet 304a side, from the outlet 304a. It is taken out. The shell pieces taken out from the outlet 304a are conveyed to the baking furnace 400 in the baking process by the conveyor 304b. At this time, since the drying furnace 300 is a rotary kiln type resistance electric furnace capable of continuous drying operation, there is no generation of CO2. Further, due to the shape of the drying furnace 300, the shells containing moisture are not affected by scattering at high temperatures. The exhaust gas from the drying furnace 300 is sucked by the blower 308 and released from the stack 309 to the atmosphere. Dust in the exhaust gas is removed by the bag filter 310 along the way, and the odor is removed by the catalytic combustion deodorizer 311. Is done. Further, the exhaust heat of the exhaust gas in the drying furnace 300 is recovered by the heat exchanger 307 and returned to the drying furnace 300 as blown air preheating. Thereby, the electric power used for the heating of the drying furnace 300 decreases, and it becomes power saving.

  In the firing step, the hearth 403 is rotated by the motor driving device 415, and the shell pieces introduced from outside the circular furnace chamber 404 are sequentially put into the circular furnace chamber 404 by a scraper 406 provided in the circular furnace chamber 404. Be transported. The shell pieces transferred into the circular furnace chamber 404 are heated and fired by the electric heater 407, and the shell pieces are efficiently fired to obtain high-quality calcium oxide. The calcium oxide obtained here is discharged to the cooler 500 in the hydration reaction step by natural fall from the outlet 408 at the center of the circular furnace chamber 404. At this time, since the firing furnace 400 is a hearth rotary type resistance electric furnace, there is no generation of CO 2. Note that the exhaust gas in the firing furnace 400 is sucked by the blower 410 and released from the stack 309 to the atmosphere, and dust in the exhaust gas is removed by the bag filter 411 in the middle. Further, the exhaust heat of the exhaust gas from the firing furnace 400 is recovered by the heat exchanger 409 and returned to the firing furnace 400 as blown air preheating. Thereby, the electric power used for the heating of the baking furnace 400 decreases, and also here, it becomes power saving. Furthermore, since the heat-resistant steel member constituting the inside of the firing furnace 400 has been subjected to a surface film treatment, it is possible to prevent chromium precipitation from the steel material and continue the stable operation of the firing furnace 400.

  In the hydration reaction step, the calcium oxide discharged from the firing furnace 400 is cooled by the cooler 500 at the lower part thereof, and the cooled calcium oxide is alternately supplied to the two hoppers 600 provided with the quantitative discharge device 601. It is thrown into. Then, calcium oxide that is quantitatively discharged from the hopper 600 by the action of the quantitative discharge device 601 is introduced from the inlet 704 at the upper right side of the main body 701 of the humidifying kneader 700. Calcium oxide introduced from the inlet 704 is humidified by being poured from a nozzle 706 while being kneaded by a stirring blade 702 that is driven to rotate inward by a motor 705. Thereby, a hydration reaction is continuously caused, and the obtained calcium hydroxide is discharged from the outlet 707 at the lower left side of the main body 701. Thereby, high quality calcium hydroxide can be obtained.

  This calcium hydroxide is conveyed to the shipping device 900 by a conveyor, where it is stored in a container 901 having a predetermined shape to be in the form of a final product. Note that the nozzle 706 of the humidifying kneader 700 and the jacket cooling water of the cooler 500 and the humidifying kneader 700 are all supplied from the same water tank 710 by the pumps 711 and 712. Further, dust in the exhaust gas of the hopper 600 is removed by the same bag filter 411 as the exhaust gas of the firing furnace 400.

  As described above, according to the present system 1, marine shells introduced from the outside are crushed by the crusher 100 into shell pieces, and the crushed shell pieces are washed by the washing machine 200. The shellfish (organic matter and salt) in the shellfish are removed cleanly. Then, the washed shellfish pieces are dried in the drying furnace 300, and the dried shellfish pieces are fired in the firing furnace 400 to obtain calcium oxide. Therefore, the quality of the obtained calcium oxide is excellent. It will be a thing.

  In addition, since the calcium oxide baked in the baking furnace 400 is hydrated in the humidifying kneader 700, calcium hydroxide is obtained, so that the quality of the obtained calcium hydroxide is also excellent. Become.

  Furthermore, since the organic matter and salt contained in the shellfish in the shellfish are removed cleanly as described above, the risk of corroding the components of the system 1 is reduced. By these, true effective utilization of marine shellfish can be aimed at.

  In the above embodiment, before the crushing step, the shellfish is stored in the storage hopper 800 for a predetermined period, so that the shellfish is stored in a rot-removed and reduced volume. Not required.

  Moreover, in the said embodiment, although the calcium oxide baked with the baking furnace 400 is supposed to be finally obtained by carrying out the hydration reaction with the humidification kneader 700, calcium oxide can also be used as a final product. Good.

DESCRIPTION OF SYMBOLS 1 Shell processing system 2 Pre-processing equipment 3 Baking processing equipment 4 Hydration reaction processing equipment 5 Exhaust gas processing equipment 100 Crusher 200 Washing machine 300 Drying furnace 400 Firing furnace 500 Cooling machine 600 Hopper 700 Humidification kneader 800 Retention hopper (reservoir container) Equivalent to
900 Shipping equipment

Utility Model Registration No. 3149761

Claims (11)

A crushing process in which a crusher crushes marine shellfish including shellfish introduced from the outside into shell pieces,
A washing step in which the washing machine cleans the crushed shell pieces while removing shells;
A drying process in which a drying oven dries the washed shellfish pieces;
A method for treating marine shellfish, comprising: a firing step of obtaining calcium oxide by firing the dried shellfish pieces in a firing furnace. A hydration reaction step of obtaining calcium hydroxide by continuously hydrating the humidified kneader with the calcium oxide that has been calcined in the calcining furnace and discharged quantitatively after the calcining step is provided. The method for treating marine shellfish according to claim 1.   3. The marine shellfish according to claim 1 or 2, further comprising a storage step of removing shells and reducing the volume by storing the shellfish in a storage container for a set period before the crushing step. Processing method. A crusher for crushing marine shellfish including shellfish introduced from the outside;
A washing machine for washing the crushed shell pieces while removing shells;
A drying oven for drying the washed shells;
A firing furnace for obtaining calcium oxide by firing the dried shellfish pieces;
A marine shellfish processing system comprising: a humidifying kneader that obtains calcium hydroxide by continuously hydrating the calcined calcium oxide discharged quantitatively .   The sea according to claim 4, wherein the crusher includes a plurality of rolls with demon teeth, and is configured to crush shells with the rolls by rotating the rolls while sprinkling water. Raw shellfish processing system.   The washing machine includes a cylindrical container in which a substantially lower half of an inclined body forms a water tank portion, and ribbon-type screw blades that are axially arranged along the extending direction of the cylindrical container, and are provided at a lower portion of the cylindrical container. The stirred shell pieces are stirred and washed in the water tank portion by the ribbon screw blades, and the washed shell pieces are further sprinkled from the middle portion of the cylindrical container and transported toward the upper portion from the upper portion. 6. The marine shellfish processing system according to claim 4 or 5, wherein the processing system is configured to sequentially extract the marine shellfish.   The processing system for marine shellfish according to any one of claims 4 to 6, wherein at least one of the drying furnace and the firing furnace is a resistance electric furnace.   The exhaust heat of at least one of the drying furnace and the firing furnace is recovered by a separately prepared heat exchanger so as to be returned to the furnace as blown air preheating. The processing system for marine shellfish according to any one of claims 4 to 7.   The marine shellfish treatment system according to any one of claims 4 to 8, wherein the drying furnace is a rotary kiln type drying furnace.   The firing furnace is a hearth rotary firing furnace including a circular furnace chamber that includes an upper lid, a body, and a hearth, and each component is fireproof and heat-insulated. The processing system for marine shellfish according to any one of 4 to 9.   The humidifying kneader comprises a cooler that cools the calcium oxide discharged from the baking furnace, and a hopper that quantitatively discharges the cooled calcium oxide, and the calcium oxide discharged quantitatively is continuous. The marine shellfish treatment system according to any one of claims 4 to 10, wherein calcium hydroxide is obtained by performing a hydration reaction.

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