JP4105026B2 - Seawater salt concentration method and concentration device - Google Patents

Seawater salt concentration method and concentration device Download PDF

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JP4105026B2
JP4105026B2 JP2003131152A JP2003131152A JP4105026B2 JP 4105026 B2 JP4105026 B2 JP 4105026B2 JP 2003131152 A JP2003131152 A JP 2003131152A JP 2003131152 A JP2003131152 A JP 2003131152A JP 4105026 B2 JP4105026 B2 JP 4105026B2
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正秀 川口
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/138—Water desalination using renewable energy
    • Y02A20/141—Wind power
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment
    • Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
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    • Y02P20/133—Renewable energy sources, e.g. sunlight

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Description

【０００１】
【産業上の利用分野】
本発明は、海水の塩分の濃縮方法、及びその濃縮装置に関する。
【０００２】
【従来の技術】
日本では、降雨量が多く、湿度が高いため、天日製塩は困難とされ、歴史的には入浜式又は揚浜式塩田製塩法が用いられてきた。これらの方法は、海水から濃い塩水（かん水）をとる濃縮工程と、このかん水を煮詰めて塩結晶をとる結晶化工程から成り立っていた。昭和３０年頃から生産性の向上と省力化の面でより優れた流下式塩田（枝条架濃縮装置）への転換が行われた。その後、イオン交換膜法でかん水を製造し、真空式多重効用缶によって晶出させるイオン交換膜装置が開発され、広く用いられるようになった。
【０００３】
イオン交換膜法で得られる食塩は、純度が９９％以上の塩化ナトリウムの結晶であり、他の成分は不純物として除去されているため、特にミネラル分は１％未満である。これに対し、輸入された天日塩や岩塩は海水に含まれる多くのミネラル分が含まれ、工業用としてよりも、健康食品として愛好者に注目されている。
【０００４】
日本において、海水からミネラル分に富む食塩を製造する方法として、セメントコンクリートの勾配をつけた土間に海水を流下させ太陽熱又は大気で蒸発させる方法が開示されている（例えば、特許文献１参照。）。
【０００５】
【特許文献１】
特開平１１−１０６２１３号公報
【０００６】
【発明が解決しようとする課題】
特開平１１−１０６２１３号公報記載の発明では、セメントコンクリートの勾配をつけた土間に海水を流下させ、土間に海水を薄く付着させ、太陽熱又は大気で蒸発させ食塩を製造させるとあるが、日本のように湿度が高く、降雨量の多い地域では海水の濃縮方法としては成立するものの、結晶化まで進行させることは実際問題として無理がある。
【０００７】
本発明は、降雨量が多く、湿度の高い日本においてミネラル分に富む食塩を太陽熱及び風などを有効に活用し、燃料や電力の消費を最小限にしてミネラル分に富む食塩を得るための海水塩分の濃縮方法、海水の濃縮装置及び海水を濃縮して得られた食塩を提供しようとするものである。
【０００８】
【課題を解決するための手段】
本発明は、前記課題を達成するために以下の手段を提供する。
すなわち、請求項１に係る海水塩分の濃縮方法は、汲上げた海水を通風が良好な屋内に設けた枝条架濃縮装置で一次濃縮を行い、次に勾配を設けて屋上に載置した流し敷板１に一次濃縮した海水を流下させて二次濃縮を行い、さらに二次濃縮した海水を平釜で加熱し、食塩を晶出させることを特徴とする。
【０００９】
枝条架濃縮装置を屋内に設けた理由は降雨時でも風さえあれば、屋内で海水を蒸発させることが可能だからである。枝条架濃縮装置の周囲には網などを設け、雨滴や虫、ほこり等が浸入しないようにしている。
枝条架濃縮措置の設置された室の屋上には二次濃縮のための流し敷板１が設けられている。
【００１０】
流し敷板１は、ガラス繊維で構成されている。ただし、特に材料を限定するものではなく、金属板等の材料を用いることも可能であり、ガラス繊維強化プラスチック（ＦＲＰ）も用いられる。
【００１１】
流し敷板１の勾配は緩やかにし、徐々に海水が流下するようにすることが望ましいため、流し敷板１の上部３分の１程度は１８〜２５度の傾斜にし、下部３分の２程度は１０〜１５度とすることが適当である。
【００１２】
請求項２に係る発明は、汲み上げた海水を、一次濃縮を行うための枝条架濃縮装置と、勾配を設けた屋上に載置された流し敷板１の上端部に沿って水平に配設したパイプ２に前記枝条架濃縮装置で一次濃縮された海水の海水出口孔２ａの多数を穿設し、流し敷板１の下端部には流下する海水を受ける樋３を水平に配設し、枝条架濃縮装置で一次濃縮された海水を貯留するタンク４と、タンク４内の海水を前記パイプ２へ送水する水中ポンプ５とを備え、水中ポンプ５から前記パイプ２へは送水管６を接続し、樋３から前記タンク４へは回収パイプ７を接続してなる二次濃縮装置とを有することを特徴とする海水の濃縮装置である。
【００１３】
タンク４には枝条架濃縮装置で一次濃縮された海水が貯留されており、一次濃縮された海水は、水中ポンプ５によりパイプ２に送水され、パイプ２に設けられた多数の海水出口孔２ａから流出して、流し敷板１の表面を流下し、太陽熱と風とで水分が蒸発して二次濃縮され、樋３に集水され回収パイプ７を経由してタンク４にもどってくる。
【００１４】
流し敷板１による二次濃縮は、一次濃縮した海水をタンク４から繰返しパイプ２に送水し、流し敷板１，樋３，回収パイプ７及びタンク４と循環させることで順次塩分を濃縮させることで行われる。又雨天の日は、雨水がタンク４に入らないようバルブを切替える。
【００１５】
本発明は、汲み上げた海水を通風が良好な屋内に設けた枝条架濃縮装置で一次濃縮を行い、次に勾配を設けて屋上に載置された流し敷板１に一次濃縮した海水を流下させて二次濃縮を行い、さらに二次濃縮した海水を平釜で加熱し、食塩を晶出させて、海水を濃縮して得られる食塩を提供するものである。
【００１６】
【発明の実施の形態】
本発明の実施の形態を図にもとづいて説明する。図１は本発明を実施するときのフローチャートである。ただし図１は、本発明の実施の１形態を示したものであって発明の範囲を限定するものではない。
【００１７】
図１において、海水の汲み上げは、沖合約３００ｍ先からポンプで汲み上げてタンクに溜める。海水の塩分濃度は約３％である。
【００１８】
一次濃縮：タンクに溜めた海水は室内に設けた枝条架濃縮装置の受け皿タンク１１に入れ、ポンプアップして、吊下げた枝付き竹２の表面をシャワー状に流下させることにより、塩分濃度が７〜１０％程度になるよう濃縮する。
従来は、この状態で平釜に入れ釜炊きして食塩を晶出させていた。
【００１９】
二次濃縮：前記一次濃縮した海水を二次濃縮装置のタンク４に入れ、ポンプアップして、緩やかな勾配を設けて屋上に載置された流し敷板１上を流下させながら、太陽熱と風により水分を蒸発させ二次濃縮させ、塩分濃度が１５〜１８％程度になるようにする。雨天の日は、雨水がタンク４内に入らないようにバルブを切替える。
【００２０】
釜炊き：ステンレス製の平釜に二次濃縮した海水を入れ、釜炊きをする。
釜炊きをすると石コウを主成分とするアクが出るのでアクを丁寧に取除きながら釜炊きをする。
【００２１】
塩の析出：釜炊きを始めて５時間ぐらい経つと、白い結晶ができ始め、更に２〜３時間経つと、キラキラ光る真白な食塩が析出する。
【００２２】
自然乾燥：析出した食塩の結晶を竹ザルに取り、８〜１０日前後自然乾燥をする。天候や気温・湿度等によりこの時間は多少変動する。
【００２３】
選別：自然乾燥された食塩は、ピンセット等で異物を除去するなどして選別し、製品とする。
【００２４】
図２は、一次濃縮に用いられる枝条架濃縮装置の実施例図である。
汲み上げられた海水は、受け皿タンク１１に一時貯留され、水中ポンプ１３で接続ホース１５を経て、海水流出管１４に送水される。部屋の天井近くに格子状に水平に配設された複数の海水流出管１４には、それぞれ多数の枝付き竹１２，・・・が吊下げられている。
【００２５】
海水流出管１４に設けられた多数の海水出口孔１４ａから流出した海水は、枝付き竹１２，・・・に沿って流下する間に水分が蒸発し、塩分が濃縮され受け皿タンク１１に貯まり、再び水中ポンプ１３で接続ホース１５を経て、海水流出管１４に送水される。このように海水が循環している間に次第に塩分が濃縮される。なお、この枝条架濃縮装置は屋内に設けられているため、雨天でも操業可能である点に特徴がある。また、枝条架濃縮装置を設置する部屋は、壁面の開口部を広く取り、通風を良好にするとともに、雨滴が入り込まず、かつ虫やほこりが侵入しないよう開口部には網を張ることが好ましい。また、この部屋の屋上には二次濃縮装置を設置し、土地の有効利用をはかることとする。
【００２６】
図３は、本発明における二次濃縮装置の正面図であり、図４は図３におけるＡ−Ａ断面図である。一次濃縮された海水はタンク４から水中ポンプ５により、送水管６を経てパイプ２に送水される。パイプ２は緩やかな勾配を設けて屋上に載置された流し敷板１の上端部に沿って水平に配設されている。
【００２７】
流し敷板１の勾配Ａは上部約３分の１は１８〜２５度、下部約３分の２の勾配Ｂは１０〜１５度程度の緩やかな傾斜とし、パイプ２に穿設された海水出口孔２ａから流出した海水が緩やかに流下する様にする。海水は流し敷板１を流下する間に太陽熱及び風の作用で水分が蒸発し二次濃縮される。
【００２８】
二次濃縮された海水は、流し敷板１の下端部に設けられた樋３に集められ、回収パイプ７を経てタンク４に戻り、再び水中ポンプ５で流し敷板１に送水され、循環を繰返すことで次第に塩分濃度が高められる。
【００２９】
また、雨天の場合は、バルブ８を閉じ、バルブ９を開くことで、雨水はバイパス管１０から流出し、タンク４には入らないようにすることができる。
【００３０】
従来行われてきた、枝条架濃縮装置による一次濃縮した海水を釜炊きすると、５００ｋｇの海水から食塩結晶を採取するのに釜炊きに２０時間以上を必要としていたが、本発明のように二次濃縮まで行うことで釜炊きの時間は７〜８時間と約３分の１となり大幅に短縮することができた。
【００３１】
海水を流下させて太陽熱により水分を蒸発させる流し敷板にガラス繊維を用いることで、軽くて丈夫で成形性も良く、屋根への設置がやりやすく、又屋根に設置することで太陽熱を効率良く利用でき、土ほこり等の混入のおそれもなくなった。
【００３２】
流し敷板１の下の室内には、一次濃縮装置である板条濃縮装置を設置することで敷地を立体的に有効利用することができる。
【００３３】
本発明に得られる食塩は白の輝きも良く、ミネラル分も市販の食塩より豊富である。表１に市販の食塩との分析結果を比較して示す。
【表１】

Figure 0004105026
【００３４】
【発明の効果】
以上のように本発明では、請求項１に係る海水塩分の濃縮方法により、太陽熱と気温と風によって海水をできる限り濃縮してから釜炊きをすることで製造経費を非常に安くすることができるとともにミネラル分の多い食塩を得ることができ美容と健康に役立つことができる。
【００３５】
また、請求項２に係る海水濃縮装置は、枝条架濃縮装置で一次濃縮した海水をさらに二次濃縮できる装置があり、該二次濃縮装置は軽量で丈夫なため、屋上に装備でき、その下の屋内には一次濃縮のための枝条架濃縮装置が設置でき、土地を立体的に活用できる。
【００３６】
さらに、白く輝く外観に優れ、しかもミネラル分が豊富な食塩の結晶を安価に得ることができる。
【図面の簡単な説明】
【図１】本発明のフローチャートである。
【図２】本発明における一次濃縮に用いられる枝条架濃縮装置の実施例図である。
【図３】本発明における二次濃縮装置の正面図である。
【図４】図３におけるＡ−Ａ断面図である。
【符号の説明】
１ 流し敷板
２ パイプ
２ａ，１４ａ 海水出口孔
３ 樋
４ タンク
５，１３ 水中ポンプ
６ 送水管
７ 回収パイプ
８，９ バルブ
１０ バイパス管
１１ 受け皿タンク
１２ 枝付き竹
１２ａ 枝
１４ 海水流出管
１５ 接続ホース[0001]
[Industrial application fields]
The present invention relates to a method for concentrating seawater salinity and a concentrating device therefor.
[0002]
[Prior art]
In Japan, the amount of rainfall is high and the humidity is high, making it difficult to make salt from the sun. These methods consisted of a concentration step of taking concentrated brine (brine) from seawater and a crystallization step of boiling this brine to obtain salt crystals. From around 1955, the conversion to a flow-down salt field (branch-line concentrator), which was superior in terms of productivity and labor saving, was carried out. Later, ion exchange membrane devices were developed and widely used to produce brine by the ion exchange membrane method and crystallize them using a vacuum multi-effect can.
[0003]
Sodium chloride obtained by the ion exchange membrane method is a sodium chloride crystal having a purity of 99% or more, and other components are removed as impurities, so that the mineral content is particularly less than 1%. On the other hand, imported sun salt and rock salt contain a lot of minerals contained in seawater, and are attracting more attention as a health food than for industrial use.
[0004]
In Japan, as a method for producing a salt rich in minerals from seawater, a method is disclosed in which seawater flows down between soils with a gradient of cement concrete and is evaporated by solar heat or air (see, for example, Patent Document 1). .
[0005]
[Patent Document 1]
JP-A-11-106213 [0006]
[Problems to be solved by the invention]
In the invention described in Japanese Patent Application Laid-Open No. 11-106213, seawater flows down between soils with a gradient of cement concrete, seawater is thinly adhered between the soils, and evaporated by solar heat or air to produce salt. In areas with high humidity and high rainfall, the seawater concentration method is effective, but it is impossible to proceed to crystallization in practice.
[0007]
The present invention is a seawater for obtaining salt rich in minerals by minimizing the consumption of fuel and electricity by effectively utilizing solar heat and wind, etc., in salty salt rich in minerals in Japan with high rainfall and high humidity. An object of the present invention is to provide a salt concentration method, a seawater concentration apparatus, and salt obtained by concentrating seawater.
[0008]
[Means for Solving the Problems]
The present invention provides the following means in order to achieve the above object.
That is, the seawater salinity concentration method according to claim 1 is such that the primary concentration is carried out by the branch-line concentration device provided indoors where the drafted seawater is well ventilated, and then the slope is provided on the roof. The primary concentrated seawater is caused to flow down to secondary concentration, and the secondary concentrated seawater is heated in a flat kettle to crystallize the salt.
[0009]
The reason why the branch concentration device is installed indoors is that it is possible to evaporate seawater indoors as long as there is wind even when it rains. A net or the like is provided around the branch-and-tube concentration device to prevent raindrops, insects, dust, etc. from entering.
A sink plate 1 for secondary concentration is provided on the roof of the room in which the branch-and-bridge concentration measures are installed.
[0010]
The sink plate 1 is made of glass fiber. However, the material is not particularly limited, and a material such as a metal plate can be used, and glass fiber reinforced plastic (FRP) is also used.
[0011]
Since it is desirable that the slope of the sink plate 1 is made gentle and the seawater gradually flows down, the upper third of the sink plate 1 is inclined at 18 to 25 degrees, and the lower two thirds of 10 is 10%. It is appropriate to set it to -15 degrees.
[0012]
The invention which concerns on Claim 2 is the pipe which arrange | positioned horizontally along the upper end part of the sink-laying board 1 mounted on the roof provided with the gradient, the branch-strand concentration apparatus for performing the primary concentration of the pumped-up seawater 2 is provided with a number of seawater outlet holes 2a for seawater primarily concentrated by the above-mentioned branch-stripe concentration device, and a trough 3 for receiving the seawater flowing down is horizontally disposed at the lower end portion of the sink plate 1 to concentrate the branches. A tank 4 for storing seawater primarily concentrated by the apparatus, and a submersible pump 5 for feeding the seawater in the tank 4 to the pipe 2. A water pipe 6 is connected from the submersible pump 5 to the pipe 2, 3 is a seawater concentrating device having a secondary concentrating device in which a recovery pipe 7 is connected from 3 to the tank 4.
[0013]
The tank 4 stores the seawater primarily concentrated by the branch-and-bridge concentrator, and the seawater primarily concentrated is sent to the pipe 2 by the submersible pump 5, and from a number of seawater outlet holes 2 a provided in the pipe 2. It flows out and flows down the surface of the sink plate 1, the water evaporates by solar heat and wind, and is secondarily concentrated, collected in the basket 3, and returned to the tank 4 through the recovery pipe 7.
[0014]
Secondary concentration by the sink plate 1 is carried out by repeatedly sending the primary concentrated seawater from the tank 4 to the pipe 2 and circulating it through the sink plate 1, trough 3, the recovery pipe 7 and the tank 4 to successively concentrate the salinity. Is called. On rainy days, the valve is switched so that rainwater does not enter the tank 4.
[0015]
In the present invention, primary concentration is performed by a branch-line concentration apparatus provided indoors where the drafted seawater is well ventilated, and then the primarily concentrated seawater is allowed to flow down on a sink plate 1 placed on the roof with a gradient. Secondary concentration is performed, and the secondary concentrated seawater is heated in a flat kettle to crystallize the salt, thereby providing the salt obtained by concentrating the seawater.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a flowchart for carrying out the present invention. However, FIG. 1 shows one embodiment of the present invention and does not limit the scope of the invention.
[0017]
In FIG. 1, seawater is pumped from a distance of about 300 m offshore and stored in a tank. The salinity of seawater is about 3%.
[0018]
Primary concentration: The seawater collected in the tank is put into a tray tank 11 of a branch concentration device installed in the room, pumped up, and the surface of the suspended bamboo 2 with a branch is made to flow down like a shower, so that the salinity is reduced. Concentrate to about 7-10%.
In the past, salt was crystallized by placing in a flat pot and cooking in this state.
[0019]
Secondary concentration: The primary concentrated seawater is put into the tank 4 of the secondary concentration device, pumped up, and flowed down on the sink plate 1 placed on the roof with a gentle gradient, by solar heat and wind. The water is evaporated and secondarily concentrated so that the salinity is about 15 to 18%. On rainy days, the valves are switched so that rainwater does not enter the tank 4.
[0020]
Pot cooking: Put the secondary concentrated seawater into a stainless steel flat pot and cook the pot.
When cooking in the kettle, an ak that contains stone-cow is the main ingredient, so cook the kettle while carefully removing the ak.
[0021]
Precipitation of salt: About 5 hours after cooking in the pot, white crystals begin to form, and after 2 to 3 hours, sparkling white salt precipitates.
[0022]
Natural drying: The salt crystals that have precipitated are collected in bamboo colander and air-dried for about 8 to 10 days. This time will vary somewhat depending on the weather, temperature and humidity.
[0023]
Sorting: Naturally dried salt is sorted into products by removing foreign substances with tweezers.
[0024]
FIG. 2 is a diagram showing an embodiment of a branch-and-bridge concentrator used for primary concentration.
The pumped seawater is temporarily stored in the tray tank 11, and is sent to the seawater outflow pipe 14 through the connection hose 15 by the submersible pump 13. A plurality of bamboo with branches 12,... Are suspended from a plurality of seawater outflow pipes 14 arranged horizontally in a lattice pattern near the ceiling of the room.
[0025]
The seawater that flows out from a number of seawater outlet holes 14a provided in the seawater outflow pipe 14 evaporates while flowing down along the branched bamboos 12,. Water is again sent to the seawater outflow pipe 14 via the connection hose 15 by the submersible pump 13. In this way, the salinity is gradually concentrated while the seawater is circulating. In addition, since this branch frame concentration apparatus is provided indoors, it is characterized in that it can be operated even in rainy weather. In addition, the room where the branch-and-bridge concentrator is installed preferably has a wide opening on the wall surface to improve ventilation, and a net is stretched over the opening so that raindrops do not enter and insects and dust do not enter. . A secondary concentrator will be installed on the roof of this room to make effective use of the land.
[0026]
FIG. 3 is a front view of the secondary concentrator in the present invention, and FIG. 4 is a cross-sectional view taken along line AA in FIG. The primarily concentrated seawater is fed from the tank 4 to the pipe 2 through the water pipe 6 by the submersible pump 5. The pipe 2 is disposed horizontally along the upper end of the sink plate 1 placed on the roof with a gentle gradient.
[0027]
The slope A of the sink plate 1 is a gentle slope of about 18 to 25 degrees in the upper third and the slope B of the lower two thirds is about 10 to 15 degrees, and the seawater outlet hole drilled in the pipe 2 The seawater that flows out of 2a will flow gently. Seawater evaporates under the action of solar heat and wind while flowing down the sink plate 1, and is secondarily concentrated.
[0028]
The secondary concentrated seawater is collected in the dredger 3 provided at the lower end of the sink plate 1, returns to the tank 4 through the recovery pipe 7, is sent again to the sink plate 1 by the submersible pump 5, and repeats circulation. The salinity is gradually increased.
[0029]
In case of rain, the valve 8 is closed and the valve 9 is opened, so that rainwater can flow out of the bypass pipe 10 and not enter the tank 4.
[0030]
When the primary concentrated seawater by the branch-and-bridge concentrator, which has been conventionally used, is cooked in a kettle, it takes 20 hours or more to cook the salt crystals from 500 kg of seawater. By carrying out the concentration, the cooking time for the kettle was 7 to 8 hours, which was about one third, and could be greatly shortened.
[0031]
Glass fiber is used for the sink plate that allows seawater to flow down and evaporates water by solar heat, making it light, strong, easy to mold, easy to install on the roof, and efficiently using solar heat by installing on the roof And there is no risk of contamination with dirt.
[0032]
By installing a strip concentrating device, which is a primary concentrating device, in the room below the sink plate 1, the site can be effectively used in three dimensions.
[0033]
The salt obtained in the present invention has a good white shine and is richer in mineral content than commercially available salt. Table 1 shows a comparison of the analysis results with commercially available salt.
[Table 1]
Figure 0004105026
[0034]
【The invention's effect】
As described above, in the present invention, the seawater salinity concentration method according to claim 1 makes it possible to greatly reduce the manufacturing cost by concentrating seawater as much as possible by solar heat, temperature and wind and then cooking the pot. At the same time, you can get salt rich in minerals, which can be useful for beauty and health.
[0035]
Further, the seawater concentrating device according to claim 2 is a device that can further secondary-concentrate seawater that has been primarily concentrated by the branch-and-bridge concentrating device, and the secondary concentrating device is lightweight and strong, and can be installed on the roof. A branch-and-tube concentration device for primary concentration can be installed indoors, and the land can be used three-dimensionally.
[0036]
Furthermore, it is possible to obtain a salt crystal that is excellent in white shining appearance and rich in minerals at a low cost.
[Brief description of the drawings]
FIG. 1 is a flowchart of the present invention.
FIG. 2 is a diagram showing an embodiment of a branch and loop concentration apparatus used for primary concentration in the present invention.
FIG. 3 is a front view of a secondary concentrator in the present invention.
4 is a cross-sectional view taken along line AA in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flowing plate 2 Pipe 2a, 14a Seawater outlet hole 3 樋 4 Tank 5, 13 Submersible pump 6 Water supply pipe 7 Recovery pipe 8, 9 Valve 10 Bypass pipe 11 Sauce tank 12 Branched bamboo 12a Branch 14 Seawater outflow pipe 15 Connection hose

Claims (2)

汲み上げた海水を、通風が良好な屋内に設けた枝条架濃縮装置で一次濃縮を行い、次に緩やかな勾配を設けて屋上に載置された流し敷板に一次濃縮した海水を流下させて二次濃縮を行い、さらに二次濃縮した海水を平釜で加熱し食塩を晶出させることを特徴とする海水の塩分の濃縮方法。  The pumped seawater is primarily concentrated by a branch-line concentrator installed indoors with good ventilation, and then the primary concentrated seawater is allowed to flow down to a sink plate placed on the roof with a gentle gradient. A method for concentrating salt content of seawater, comprising concentrating and heating secondary concentrated seawater in a flat kettle to crystallize salt. 汲み上げた海水を、一次濃縮を行うための枝条架濃縮装置と、緩やかな勾配を設けて屋上に載置された流し敷板（１）の上端部に沿って水平に配設したパイプ（２）に前記枝条架濃縮装置で一次濃縮された海水の海水出口孔（２ａ）の多数を穿設し、流し敷板（１）の下端部には流下する海水を受ける樋（３）を水平に配設し、枝条架濃縮装置で一次濃縮された海水を貯留するタンク（４）とタンク（４）内の海水を前記パイプ（２）へ送水する水中ポンプ（５）とを備え、水中ポンプ（５）から前記パイプ（２）へは送水管（６）を接続し、樋（３）から前記タンク（４）へは回収パイプ（７）を接続してなる二次濃縮装置とを有することを特徴とする海水の塩分濃縮装置。  The branch water concentration device for primary concentration of the pumped seawater and the pipe (2) disposed horizontally along the upper end of the sink plate (1) placed on the roof with a gentle gradient A large number of seawater outlet holes (2a) for seawater primarily concentrated by the branch concentration device are drilled, and a trough (3) for receiving the seawater flowing down is disposed horizontally at the lower end of the sink plate (1). , A tank (4) for storing seawater primarily concentrated by the branch concentration device, and a submersible pump (5) for feeding the seawater in the tank (4) to the pipe (2), from the submersible pump (5) A secondary concentrator comprising a water pipe (6) connected to the pipe (2) and a recovery pipe (7) connected from the tank (3) to the tank (4). Seawater salt concentration device.
JP2003131152A 2003-05-09 2003-05-09 Seawater salt concentration method and concentration device Expired - Fee Related JP4105026B2 (en)

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