JP2011042524A - Natural sea salt producing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a natural sea salt producing system in which the heat of solar energy is collected in two kinds of salina houses, moisture of seawater is efficiently evaporated, and low-cost natural sea salt is factory-produced. <P>SOLUTION: In the natural sea salt producing system in which there are arranged a first salina house and a second salina house having a semicircular shape with a semicircular cross section as a whole with a longitudinal direction as the east and west, the south side of the first salina house is covered with a double transparent and/or translucent film; the inside of the north side is covered with a reflecting mirror and the outside with a film of a material for the sake of warmth; the first salina house is provided with a first storage tank in which seawater is drawn and stored at the bottom of the interior and a rotating endless cylindrical fabric body; the cylindrical fabric body rotates so that it dips into seawater in the storage tank and most of it moves in the house to concentrate seawater, the seawater concentrated to predetermined concentration is supplied to a constituent conditioning chamber, wherein it is subjected to constituent conditioning; the concentrated seawater after constituent conditioning is supplied to the second salina house; and the second saline house further concentrates the concentrated seawater and supplies it to a seawater salt refinery. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a high-quality natural sea salt production system that efficiently uses solar heat and contains a large amount of minerals.

Natural sea salt is made from seawater only, and does not use processing aids or food additives to evaporate water, thereby precipitating salt crystals. It is attracting attention because it does not exclude elements.
By the way, there is a rock salt that a lot of seawater naturally dried, and this rock salt layer has a thin calcium salt layer from the bottom, a thick sodium salt layer in the middle, and a potassium salt in the upper part due to the difference in crystal concentration. It consists of a layer and a magnesium salt layer, and generally a rock salt is taken out of a sodium salt layer, so that it is high-quality sodium chloride and does not contain other minerals and trace elements as it is said to be of good quality.

In order to produce natural sea salt containing the above trace elements, it is necessary to forcibly evaporate only the seawater in a short time so that sodium salts, other magnesium salts and trace elements are not separated. An ion membrane standing kettle method has been developed for production, but it is not suitable because the balance of seawater minerals is broken, and the sun-hidden kettle method and the heating spray method are currently used. The sun-hira method and the heat spray method were based on a low-productivity method using fossil fuels and wood and high energy costs.
By the way, the conventional sun-flat pot method is a method in which seawater is concentrated by the natural force of salt fields and sun, and is heated and evaporated by the flat pot. In the concentration step, for example, as disclosed in Patent Document 1 A system using a greenhouse has also been proposed.

Japanese Patent Laid-Open No. 2008-19152

However, even in the sun-flat method using a greenhouse, it takes time to concentrate the seawater, and if too much time is spent, the minerals in the seawater become unbalanced as the minerals are separated like rock salt. Therefore, there was a problem that it was difficult to concentrate sea salt concentration to about 15% in a short time. Moreover, although the mineral balance is good in the heating spray method, there is a problem in energy cost for heating.
The object of the present invention has been made in view of the above-mentioned problems, and collects solar energy in two kinds of salt paddy houses and efficiently evaporates the water of seawater to produce low-cost natural sea salt in a factory. It is intended to provide a natural sea salt production system that can be produced in an automated manner.

  In order to solve the above-mentioned problems, the invention of claim 1 is a natural sea salt production system, which is a kamaboko type with a semicircular cross section as a whole, and a first Shioda house and a second Shioda house, whose longitudinal directions are east and west. In the sea salt production system in which the component adjustment chamber is provided between these houses, the first Shioda house is covered with a double transparent and / or translucent film on the south side, and the inner side is a reflecting mirror on the north side. The outer side is covered with a film made of a cold protection material, and the first salt house is provided with a first storage tank for pumping and storing seawater and a rotating endless cylindrical cloth body on the inner bottom, The body partly enters the storage tank and is soaked in seawater, and most of the body rotates so as to move in the house, supplying seawater concentrated to a predetermined concentration to the component adjustment chamber, and the component adjustment chamber Is a predetermined amount to the supplied concentrated seawater The component is adjusted by adding a component, and the concentrated seawater whose component is adjusted is supplied to the second saltwater house, and the second saltwater house further concentrates the concentrated seawater and supplies it to the seawater salt purification step. To do.

Invention of Claim 2 is the natural sea salt manufacturing system of Claim 1, Comprising: Said 2nd Shioda house covers the south side with a double transparent or translucent film, and the north side is a reflective mirror inside. The outside is covered with a film of cold protection material, and the bottom of the inside is provided with a second storage tank for pumping and storing the concentrated seawater adjusted for the above components and a spraying device for pumping the concentrated seawater to the ceiling of the house and spraying it. The adjusted concentrated seawater is condensed in a predetermined high concentration by circulating the second storage tank and the spraying device.
The invention according to claim 3 is the natural sea salt production system according to claim 1 or 2, wherein the floor material of the first Shioda house is kneaded with an acrylic resin containing black dye on a fiber obtained by pulverizing kummai rice cake and cured. It is characterized by using a heat storage plate that has been removed.
The invention of claim 4 is the natural sea salt production system according to claim 1, 2 or 3, wherein the component adjustment chamber is a filtration device for removing impurities, excess bittern or precipitated lime, or an addition device for adding bittern. It is provided.

According to the first aspect of the present invention, the first Shioda house is covered with a double transparent or translucent film on the south side, a reflecting mirror on the north side and a film made of a cold protection material on the outside, so a normal house The solar heat storage efficiency is higher than the above, and a rotating cylindrical cloth body is provided so that the evaporation of seawater can be promoted and the seawater can be concentrated efficiently. Solar heat is not affected by changes in the natural environment and weather. Manufacturing costs and maintenance costs can be reduced, and withdrawal during typhoons is easy.
According to the invention of claim 2, since the first Shioda house is covered with a double transparent or translucent film on the south side, a reflecting mirror on the north side and a film of cold protection material on the outside, it is more than a normal house. In addition, solar heat storage efficiency is high, and further, concentrated seawater is sprayed from the ceiling and circulated, so that evaporation can be promoted and seawater can be concentrated efficiently.
According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the floor material of the first Shioda house is an acrylic resin containing black dye on the fiber (koji fiber) obtained by pulverizing kummai koji. Since the plate kneaded and cured is used, it is an appropriate black porous material, and the temperature in the house rises further, so that seawater can be concentrated efficiently. Moreover, since this heat storage board uses what was discarded conventionally after extracting the nutrient component of persimmon, an environmental load is reduced.
According to the invention of claim 4, in addition to the effects of the inventions of claims 1 to 3, impurities, excess bittern and precipitated lime are removed in the component adjustment chamber, so that high-quality natural sea salt can be produced. .

Schematic explaining the entire natural sea salt production system of the present invention, Schematic sectional view of the first Shioda house of the embodiment of the present invention, A plan view of Daiichi Shioda House in FIG. Schematic sectional view of the second Shioda house of the embodiment of the present invention, It is a top view of the 2nd Shioda house of FIG.

  As a salt field house that efficiently accumulates solar heat, it promoted the evaporation of seawater and efficiently concentrated seawater to produce natural sea salt.

An embodiment of a preferred natural sea salt production system of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the outline of the entire natural sea salt production system of this embodiment is as follows. Seawater A is supplied to a plurality of first salt house 2 by a filter 11 and a feed pump 12. Condensed to a concentration of about 15%, this concentrated seawater B is sent to the component adjustment chamber 3 by the feed pump 21, filtered to remove impurities, excess bittern and precipitated lime, and adjusted bittern as necessary. Fine adjustment to the desired component ratio, for example, by addition. These adjusted concentrated seawater B2 is once stored in the storage chamber 4 and then supplied to the second salted rice house 5 by the feed pump 41. The highly concentrated seawater C further concentrated by the second salted rice house 5 is It is sent to the process at the conventional refining factory 6 and crystallized in a flat kettle or the like to produce natural sea salt as the final product.

[Daiichi Shioda House 2]
Here, the first Shioda House 2 will be described in more detail with reference to FIGS.
The first Shioda House 2 is a long and narrow plastic house with a semi-circular cross section and the longitudinal direction facing east-west (EW). The south (S) side irradiated with sunlight is double film 22 (transparent or semi-transparent). The first storage tank is covered with a transparent film), and the north (N) side, which is always shaded, is covered with a reflecting mirror on the inside and a reflecting film 23 made of a cold protection material on the outside, and sea water is pumped and stored in the bottom 24 on the inside. 25 is provided, and an endless cylindrical cloth body 26 that occupies most of the first salt pad house 2 and rotates is provided.

A part of the lower side of the cylindrical cloth body 26 enters the first storage tank 25 and is immersed in seawater. Most of the cylindrical cloth body 26 moves toward the ceiling in the south side of the house of the first Shioda House 2, and the first storage on the north side. It rotates to move toward the tank 25. The rotational movement of the cylindrical cloth body 26 is made by the rotation of the rotating roller 264.
A first storage tank 25 is disposed at the center of the bottom 24, and the floor material surrounding the first storage tank 25 is pulverized with kummy rice cake and kneaded the fibers with an acrylic resin containing black dye and cured. A heat storage plate 27 is laid down, and a pipe 281 for supplying seawater A to the first storage tank 25 is disposed at the bottom 24, and a concave groove 251 is provided near the center of the bottom of the first storage tank 25 for concentration. A pipe 282 for feeding the seawater B to the component adjustment chamber 3 in the next process is arranged. The heat storage plate 27 has a rough surface and absorbs solar heat, and a slight gap is formed between the kuma cake and the acrylic resin, and is heated in a process in which seawater passes through the gap.

Among the double vinyl sheets of the double film 22 on the south side of the first Shioda House 2, a transparent sheet 221 is stretched around the outer peripheral surface. The transparent sheet has a thickness of 0.075 mm (Cai Kasei Co., Ltd .: Sky Eight 8 (registered trademark) with a transparency of 95% (initial) (70% after 3 years use) The transparent sheet should have a high ability to capture sunlight, and is transparent or almost transparent (transparency) In addition, a translucent sheet 222 that suppresses far-infrared rays is stretched around the inner peripheral surface, but this translucency is 0.1 mm (CI Kasei Co., Ltd .: High Hot Sky Eight ( The translucency of the translucent sheet is 75% straight light (550mm) transmittance and 90% total light (550mm) transmittance, but far infrared (5 ~ 25μ) transmission for heat retention. The rate is 15% (general farming degree 25%) and has heat retention. Between the sheets, there is an air layer 37 having an interval of about 0 to 3 cm (average 1 cm).
Further, the film 23 made of the cold protection material on the north side of the first Shioda House 2 where the sun rays are not irradiated is a mirror part (reflector) for heat reflection on the inner peripheral surface, and a mirror in which an aluminum foil 231 is attached to a vinyl sheet. It is. It is supported by a semicircular pole 285 that supports the seat from the inside along the inner circumference and a horizontal pole 286 in the lateral direction.

The cylindrical cloth body 26 may be cloth or non-woven fabric as long as it absorbs seawater. A plurality of rotating rollers 262 that are rotatable in the longitudinal direction are provided on the support frame 261, and a rotating roller that is rotated by a motor 263 on the top. H.264 is provided.
Further, in order to discharge moisture inside the house, an exhaust port 284 is provided near the ceiling of the house, and an air supply port 283 is provided near the bottom of the house to introduce outside air.
Since the first Shioda House 2 is configured as described above, first, impurities are removed by the filter 11, and the seawater A pumped to the feed pump 12 is supplied from the pipe 281 to the first storage tank 25. The seawater A stored in the first storage tank 25 is accelerated by the double film 22, the reflective film 23, and the heat storage plate 27 in the house where the seawater has become hot. Evaporation is further promoted by immersing seawater A in one reservoir 25 and moving the south side of the house toward the ceiling. At this time, in order to lower the humidity in the house, outside air is taken in from the lower outside air supply port 283 and discharged outside from the exhaust port 284 of the room air in the damp house.
In the first Shioda House 2, seawater A having a salinity of about 3% is converted to a concentrated seawater B having a salinity of about 15% by the above-described process.

[Ingredient adjustment chamber 3 and storage chamber 4]
Next, although the process in the component adjustment chamber 3 and the storage chamber 4 in FIG. 1 is demonstrated, this component adjustment chamber 3 removes an impurity with a filtration apparatus, analyzes the component of the concentrated seawater B, From the analysis result, When the bittern is excessive, a part of bittern deposited in the lower layer is removed, and the precipitated lime precipitated is removed. On the contrary, when the bittern is small, a predetermined amount of bittern is added by adding means such as an adding device (in some cases, a predetermined amount may be added by a person), and the composition of the natural sea salt of the final product is added. The ingredients are adjusted so that the ratio is almost uniform.
Concentrated seawater B2 obtained by adjusting the components of this concentrated seawater B is temporarily stored in the storage chamber 4, but this storage chamber 4 has a cold protection structure, and supplies the adjusted concentrated seawater B2 to the next second saltwater house 5. Keep waiting as long as possible.

[Second Shioda House 5]
Here, the second Shioda house 5 will be described in more detail with reference to FIGS. 4 and 5.
The second Shioda House 5 is the same as the First Shioda House 2, and is a long and narrow plastic house with a semi-circular cross section and the longitudinal direction facing east-west (EW). The south (S) side has a double film 52 ( The north (N) side is covered with an aluminum foil 531 that is a reflecting mirror, and the outside is covered with a reflective film 53 that is a heat insulating material (cold material). 4 is provided with a second storage tank 55 that pumps and stores the adjusted concentrated seawater B through a pipe 581, and a semicircular groove 551 is provided in the longitudinal direction at the center of the bottom of the second storage tank 55. The semicircular groove 551 is provided with a screw conveyor 552 for collecting highly condensed seawater C produced in the second salt house 5 at the end.
The structure of the double film 52 and the reflective film 53 is the same as that of the double film 22 and the reflective film 23 of the first Shioda House 2. In addition, the configuration supported by the semicircular pole 585 and the horizontal horizontal pole 586 supporting the seat from the inside along the inner periphery is the same as the semicircular pole 285 and the horizontal horizontal pole 286 of the first Shioda House. It is.

  The characteristic of the second salt house 5 is that a spraying device 56 is arranged in the vicinity of the inner ceiling. The adjusted concentrated seawater B is supplied to the spraying device 56, but the second storage tank 55 is adjusted. The concentrated seawater B is pumped up by a pumping and feeding pump 57 through a pipe 582 and supplied through a pipe 571. The spray device 56 is provided with a plurality of nozzles 561, from which the adjusted concentrated seawater B is sprayed, and the water that has been promoted to evaporate the seawater and becomes water vapor is discharged from the exhaust port 584 to the outside, and new outdoor air is supplied. A vent 583 is introduced.

In addition, in the second salt house 5, hot air piping 59 is provided in order to raise the temperature of the room as necessary. Hot air is supplied from the hot air source device 592 by the blower fan 593, and the hot air piping 59 is provided. Nozzle 591 is used to increase the temperature in the house and further promote the evaporation of seawater. As the hot air source device 592, the solar heat storage configuration of the first Shioda house 2 may be used, or a separately heated furnace may be used.
In this way, in the second Shioda House 5, by the process as described above, the adjusted concentrated seawater B2 having a salinity of about 15% is further known as the adjusted highly concentrated seawater C having a predetermined salinity of 30% or more by the feed pump 51. To the refinery 6

[Refining factory 6]
In the adjusted highly concentrated seawater C fed from the second Shioda House 5, it is crystallized in a flat pot etc. in a short time to remove impurities and precipitated lime, and the final product containing appropriate bittern and containing trace elements Natural sea salt is finished.

  As described above, according to the present example, the first Shioda House 2 is covered with a double transparent or translucent film on the south side, the inside on the north side is covered with a reflecting mirror, and the outside is covered with a film made of a cold protection material. Solar heat storage efficiency is higher than that of other houses, and a rotating cylindrical cloth body is provided to facilitate evaporation of seawater and concentrate seawater more efficiently. Since the plate is made by kneading the fibers with an acrylic resin containing black dye and cured, the temperature inside the house rises further, so the seawater can be concentrated efficiently, and it is a greenhouse. It is less affected by changes in the natural environment and weather, can reduce manufacturing costs and maintenance costs, and is easy to withdraw during typhoons.

Also, the second Shioda House 5 has the same structure as the first Shioda House where the south side is covered with a double transparent or translucent film, the north side is covered with a reflector and the outside is covered with a cold protection film. The solar heat storage efficiency is higher than that of the house, and since concentrated seawater is sprayed and circulated from the ceiling, evaporation can be promoted and seawater can be concentrated efficiently. The second Shioda House 5 is also less affected by changes in the natural environment and weather, so that the manufacturing costs and maintenance costs can be reduced, and it is easy to withdraw during a typhoon.
In this way, impurities and precipitated lime can be removed, an appropriate bittern is blended, and a high-quality natural sea salt that is a final product containing trace elements can be produced.
Needless to say, the present invention is not limited to the above-described embodiments as long as the features of the present invention are not impaired.

11. Filter, 12, 21, 41, 51 Feed pump 2 First Shioda House 22 Double film 221 Transparent sheet 222 Translucent film 23 Reflective film 231 ... Aluminum foil 24 ... Bottom
25 .. First storage tank, 251 .. Ditch,
26 .. Cylindrical cloth body, 261 .. Support frame, 262 .. Rotating roller,
263 ... Motor, 264 ... Rotating roller,
27 .. Heat storage plate,
281,282 ... Piping 283 ... Air supply port 284 ... Exhaust port
285 ... Semi-circular pole, 286 ... Horizontal pole,
3 .. Ingredient adjustment room, 37 .. Air layer,
4. Storage room,
5. Second Shioda House,
52 .. Double film 521 .. Transparent sheet 522 .. Translucent film 53 .. Reflective film 531 .. Aluminum foil 54 .. Bottom
55 .. Second storage tank, 551 .. Semicircular groove, 552 .. Screw conveyor 56 .. Spraying device, 561 .. Nozzle,
57 ·· Pumping feed pump, 571 ·· Piping,
581, 582 ... Piping, 583 ... Air supply port, 584 ... Exhaust port,
585 ... Semi-circular pole, 586 ... Horizontal pole,
59 .. Hot air piping, 591 .. Nozzle, 592 .. Hot air source device,
593 ... Blower fan,
6. Refinery factory

Claims (4)

In the sea salt production system in which the first Shioda House and the second Shioda House, which are semi-circular kamaboko-shaped as a whole and east-west in the longitudinal direction, are arranged, and a component adjustment chamber is provided between these houses,
The first Shioda House is covered with a double transparent and / or translucent film on the south side, the north side is covered with a reflecting mirror and the outside is covered with a film of a cold protection material,
The first salt house is provided with a first storage tank for pumping and storing seawater and a rotating endless cylindrical cloth body at the bottom of the inner side, and a part of the cylindrical cloth body enters the storage tank. Soaked in seawater, rotate so that most of it moves in the house, supply seawater concentrated to a predetermined concentration to the component adjustment chamber,
The component adjustment chamber adds a predetermined component to the supplied concentrated seawater to perform component adjustment, and supplies the component-adjusted concentrated seawater to the second Shioda House, which further supplies the concentrated seawater. A natural sea salt production system characterized by being concentrated and supplied to a seawater salt purification process. The second Shioda House, the south side is covered with a double transparent or translucent film, the north side is covered with a reflecting mirror and the outside is covered with a cold protection film,
A second storage tank that pumps and stores the concentrated seawater adjusted for the components and a spray device that pumps and concentrates the concentrated seawater on the ceiling of the house at the bottom of the inside,
2. The natural sea salt production system according to claim 1, wherein the concentrated seawater adjusted in components is circulated through a second storage tank and a spraying device to condense to a predetermined high concentration.   3. The heat storage plate according to claim 1, wherein the first Shioda house floor material is a heat accumulation plate obtained by pulverizing kummy rice cake and kneading the fibers with an acrylic resin containing a black dye. Natural sea salt production system.   4. The natural sea salt production system according to claim 1, wherein the component adjustment chamber is provided with a filtering device for removing impurities, excessive bittern and precipitated lime, or an addition device for adding bittern. 5.

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