JP2903466B2 - Production of salt from seawater - Google Patents
Production of salt from seawaterInfo
- Publication number
- JP2903466B2 JP2903466B2 JP10006862A JP686298A JP2903466B2 JP 2903466 B2 JP2903466 B2 JP 2903466B2 JP 10006862 A JP10006862 A JP 10006862A JP 686298 A JP686298 A JP 686298A JP 2903466 B2 JP2903466 B2 JP 2903466B2
- Authority
- JP
- Japan
- Prior art keywords
- salt
- seawater
- steam
- dryer
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
- A23L27/40—Table salts; Dietetic salt substitutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0018—Evaporation of components of the mixture to be separated
-
- 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
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ボイラ等の燃焼機
から排出される排煙や水蒸気の熱を有効利用して海水か
ら食塩を製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing salt from seawater by effectively utilizing the heat of flue gas and steam discharged from a combustor such as a boiler.
【０００２】[0002]
【従来の技術】食塩は、我が国では明治３８年頃より政
府の専売となり、製造・輸入・販売の全てが大蔵省の管
理下にあった。その当時からの塩は、天日製塩を主とし
た自然塩であり、「にがり」（カルシウム、マグネシウ
ム、その他約６０種類の微量ミネラルからなる成分）を
十分含んだものであった。2. Description of the Related Art In Japan, salt has been monopolized by the government since about 1900, and all production, import and sales were under the control of the Ministry of Finance. The salt from that time was a natural salt mainly composed of sun-produced salt, and contained enough "nigari" (a component consisting of calcium, magnesium, and about 60 other trace minerals).
【０００３】昭和４７年頃より近代工業の発達に伴い、
塩は食用だけではなく工業用に多く使われるようにな
り、国内生産では需要に到底応じられないので、海外よ
りコストの安い塩の大量輸入が始まった。[0003] With the development of modern industry from around 1972,
Salt is used not only for food but also for industrial purposes, and domestic production cannot meet demand at all, so mass import of salt, which is cheaper than overseas, has begun.
【０００４】また、工場に海水を導入してイオン交換樹
脂膜を使い電気的方法にて製塩する方法（例えば、特公
昭６３−２７２９０号公報参照）も一部では採用され
た。Further, a method of introducing seawater into a factory and salt-forming by an electric method using an ion exchange resin membrane (for example, see Japanese Patent Publication No. 63-27290) has been partially adopted.
【０００５】しかし、このような製法による塩は、自然
塩と異なり、「にがり」の含有量が極めて少なく、中で
も人体の栄養上最も大切なカルシウムやマグネシウム等
が特に少なく、食用としては自然塩に比べはるかに劣
る。[0005] However, unlike the natural salt, the salt produced by such a method has a very low content of "nigari", especially calcium and magnesium, which are most important for nutrition of the human body. Much worse than that.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、このような
従前の背景に鑑み、また平成９年４月１日よりの塩専売
法の廃止に伴い、民間中小企業においても安易に製塩で
きる路がひらけたことを踏まえ、人体の栄養上大切なカ
ルシウムやマグネシウム等が含まれた自然塩を、ボイラ
等の燃焼機から排出される排煙や水蒸気の熱を有効利用
して海水から容易にかつ経済的にしかも品質の安定した
食塩として製塩できる方法を提供しようとするものであ
る。SUMMARY OF THE INVENTION The present invention has been made in view of such a background, and with the abolition of the salt monopoly law from April 1, 1997, a road which can be easily produced by private small and medium-sized enterprises. The natural salt containing calcium and magnesium, which are important for human nutrition, is easily converted from seawater by effectively utilizing the heat of flue gas and steam discharged from a boiler or other combustor. It is an object of the present invention to provide a method that can be produced economically and with stable quality.
【０００７】[0007]
【課題を解決するための手段】本発明の第１の形態で
は、ボイラ等の燃焼機からの排煙経路の途中に回転ドラ
ム型乾燥機を配置し、該乾燥機の温度を検出しながらそ
の回転するドラム本体の外表面に、海水を、検出した温
度に応じて流量調整しつつ滴下又は塗布して水分を蒸発
させ、ドラム本体の外表面に付着した塩分を剥離して採
取する。According to a first aspect of the present invention, a rotary drum type dryer is disposed in the middle of a smoke exhaust path from a boiler or other combustor, and the temperature of the dryer is detected while detecting the temperature of the dryer. Seawater is dropped or applied to the outer surface of the rotating drum body while adjusting the flow rate according to the detected temperature to evaporate the water, and the salt attached to the outer surface of the drum body is separated and collected.
【０００８】例えば、海産物の加工工場の大半はボイラ
等の燃焼機を備え、沿岸に所在する場合が多いが、燃焼
機からの排煙ダクトの外表面の温度は概ね１００℃以上
の高温で、熱量としては厖大であるのに、現在までその
熱は殆ど利用されていない。このような工場において
は、既設の設備を利用して排煙経路の途中に回転ドラム
型乾燥機を配備し、近くの海水を導入することで本発明
を簡単かつ経済的に実施できる。なお、本発明はこのよ
うなところに限らず、その他に排煙の熱を利用できると
ころであれば広範に利用できるものである。For example, most seafood processing plants are equipped with a boiler or other combustor and are often located along the coast, but the temperature of the outer surface of the smoke exhaust duct from the combustor is generally as high as 100 ° C. or higher. Although the amount of heat is enormous, the heat is hardly used until now. In such a factory, the present invention can be simply and economically implemented by disposing a rotary drum dryer in the middle of the smoke exhaust path using existing equipment and introducing nearby seawater. The present invention is not limited to such a place, and can be widely used as long as the heat of exhaust gas can be used.
【０００９】また、本発明の第２の形態では、回転ドラ
ム型乾燥機内に加熱媒体として水蒸気を送入し、該乾燥
機の温度を検出しがらその回転するドラム本体の外表面
に、海水を、検出した温度に応じて流量調整しつつ滴下
又は塗布して水分を蒸発させ、ドラム本体の外表面に付
着した塩分をある程度の乾燥度に抑え、これを剥離し
て、加熱媒体として水蒸気を送入されている蒸気乾燥式
撹拌コンベアに投入し、撹拌しつつ搬送しながら乾燥さ
せる。In a second embodiment of the present invention, steam is fed as a heating medium into a rotary drum type dryer, and seawater is applied to the outer surface of the rotating drum body while detecting the temperature of the dryer. While adjusting the flow rate according to the detected temperature, the water is evaporated by dripping or coating, the salt attached to the outer surface of the drum main body is suppressed to a certain degree of dryness, this is peeled off, and steam is sent as a heating medium. It is put into a steam-drying type stirring conveyor, and dried while being transported while stirring.
【００１０】蒸気乾燥式撹拌コンベアは、樋の周壁の中
空内部に水蒸気を送入し、樋内に投入された塩分を撹拌
送り羽根で撹拌しながら搬送するものが良い。[0010] The steam drying type stirring conveyor preferably feeds steam into the hollow inside of the peripheral wall of the gutter, and conveys the salt introduced into the gutter while stirring it with a stirring and feeding blade.
【００１１】海産物の加工工場等では、水蒸気発生源を
設備の一つとして備えていることも多く、このようなと
ころでは、既設の水蒸気発生源をそのまま使用して海水
から食塩を簡単かつ経済的に製造できる。また、水蒸気
発生装置を新設する場合にも、水蒸気は取り扱いが容易
であり、且つ、ドラム型乾燥機から排出される高温のド
レンは、そのまま水蒸気発生源に環流使用できるので、
製塩コストは低廉である。[0011] A marine product processing plant or the like often has a steam generation source as one of the facilities. In such a case, the existing steam generation source is used as it is to easily and economically convert salt from seawater. Can be manufactured. Also, when a new steam generator is installed, the steam is easy to handle, and the high-temperature drain discharged from the drum-type dryer can be used as it is as the steam source.
Salt production cost is low.
【００１２】[0012]
【発明の実施の形態】次に、本発明の実施の形態を図面
に基づいて詳述する。Next, embodiments of the present invention will be described in detail with reference to the drawings.
【００１３】図１及び図２は本発明の第１の実施形態を
示す。図１において、海産物の加工工場等では、通常
は、ボイラ等の燃焼機１からの排煙を排煙ダクト２を通
じ煙突３から屋外へ排気しているが、このようなところ
で、排煙ダクト２の水平になっているところに回転ドラ
ム型乾燥機４を介在させ、燃焼機１からの排煙を、この
回転ドラム型乾燥機４の横長円筒形のドラム本体５中を
通じて煙突３から排気することにより、ドラム本体５を
加熱する。FIGS. 1 and 2 show a first embodiment of the present invention. In FIG. 1, in a marine product processing plant or the like, smoke emitted from a combustor 1 such as a boiler is normally exhausted from a chimney 3 to the outside through a smoke exhaust duct 2. The rotary drum type dryer 4 is interposed in the horizontal position of the above, and smoke exhausted from the combustor 1 is exhausted from the chimney 3 through the horizontally long cylindrical drum body 5 of the rotary drum type dryer 4. Thereby, the drum body 5 is heated.
【００１４】乾燥機４のドラム本体５の両端は、排煙ダ
クト２の途中に軸受６により回転自在に支承され、ドラ
ム本体５の一端外周に設けられたスプロケットホイール
７とモータ８側のスプロケットホイール９との間にチェ
ーン１０を掛け回すことにより、モータ８により矢印方
向に回転駆動される。Both ends of the drum body 5 of the dryer 4 are rotatably supported by bearings 6 in the middle of the smoke exhaust duct 2, and a sprocket wheel 7 provided on the outer periphery of one end of the drum body 5 and a sprocket wheel on the motor 8 side. By rotating the chain 10 between itself and the motor 9, the motor 8 is driven to rotate in the direction of the arrow.
【００１５】一方、海水ポンプ１１により海から海水を
汲み上げ、濾過タンク１２で濾過するとともに、予熱タ
ンク１３で予熱してから、送水ポンプ１４により海水導
入配管１５を通じて乾燥機４へ海水を導入する。予熱タ
ンク１３の熱源としては、燃焼機１からの排煙の一部や
工場内から排出する温水等の熱を利用すればよい。On the other hand, seawater is pumped from the sea by a seawater pump 11, filtered by a filtration tank 12, preheated by a preheating tank 13, and then introduced into the dryer 4 by a water supply pump 14 through a seawater introduction pipe 15. As a heat source of the preheating tank 13, heat such as a part of flue gas from the combustor 1 or hot water discharged from the factory may be used.
【００１６】図１及び図２に示すように、乾燥機４のド
ラム本体５の周辺の上部には、横長の海水滴下又は塗布
器１６がドラム本体５の軸線と平行に配置されている。
この海水滴下又は塗布器１６は、送水ポンプ１４により
送水されてくる海水を、ドラム本体５の外表面の上部に
滴下又は塗布するもので、滴下する場合には、例えばパ
イプに多数の小孔を設けた構造とし、塗布する場合に
は、例えばパイプの溝に耐熱性の浸潤材を設け、この浸
潤材をドラム本体５の外表面に摺接させる。その滴下又
は塗布する海水量を乾燥機４の表面温度に応じて自動調
整するため、ドラム本体５の外周の排煙入口側又はその
周辺に温度センサ１７が配置され、この温度センサ１７
の信号によりインバータ１８を介して送水ポンプ１４が
制御される。なお、温度センサ１７の設置位置は上記の
ようなところに限られないが、海水滴下又は塗布器１６
による海水の滴下又は塗布による温度低下の影響をなる
べく受けない位置が好ましい。As shown in FIGS. 1 and 2, a horizontally long seawater drip or applicator 16 is arranged in parallel with the axis of the drum main body 5 in the upper part of the periphery of the drum main body 5 of the dryer 4.
The seawater drip or applicator 16 is for dropping or applying seawater fed by the water feed pump 14 on the upper portion of the outer surface of the drum body 5. When the seawater is dropped, for example, a number of small holes are formed in a pipe. In the case of coating, a heat-resistant infiltration material is provided in, for example, a groove of a pipe, and the infiltration material is slidably contacted with the outer surface of the drum body 5. In order to automatically adjust the amount of seawater to be dripped or applied in accordance with the surface temperature of the dryer 4, a temperature sensor 17 is disposed on or around the smoke exhaust inlet on the outer periphery of the drum body 5, and the temperature sensor 17 is provided.
The water feed pump 14 is controlled via the inverter 18 by the signal of (1). In addition, the installation position of the temperature sensor 17 is not limited to the above position,
The position which is not affected as much as possible by the drop of seawater due to water or the decrease in temperature due to coating is preferred.
【００１７】ドラム本体５の外表面に滴下又は塗布され
た海水は、ドラム本体５が加熱されているため、水分が
蒸発し、塩分がドラム本体５の外表面に付着する。その
付着した塩分を剥離するため、ドラム本体５の周辺に横
長の剥離器１９が配置されている。この剥離器１９は、
水分ができるだけ蒸発した状態で塩分を剥離するため、
ドラム本体５の回転方向に向かって、滴下又は塗布位置
よりもできるだけ離れたところに配置するのが好まし
い。The seawater dripped or applied to the outer surface of the drum body 5 evaporates and the salt adheres to the outer surface of the drum body 5 because the drum body 5 is heated. To remove the attached salt, a horizontally long stripper 19 is arranged around the drum body 5. This stripper 19 is
In order to remove the salt while the water has evaporated as much as possible,
It is preferable to dispose as far as possible from the dropping or coating position in the rotation direction of the drum main body 5.
【００１８】ドラム本体５の上方には、海水の蒸発によ
る排蒸気を回収する蒸気回収器２０及びこれに連通する
冷却器２２が配置され、ドラム本体５の下方には、剥離
器１９で剥離されて落下する塩分をホッパ２２を通じて
導入して精製処理部（図示せず）へ搬送するスクリュー
コンベア２３が配置されている。なお、排煙ダクト２と
ドラム本体５と煙突３との接触面には、高温用パキング
を介在させ、煙の外部漏出を遮断して工場内の汚染を防
止する。Above the drum main body 5, a steam recovery unit 20 for recovering exhaust steam generated by the evaporation of seawater and a cooler 22 communicating therewith are arranged, and below the drum main body 5, separated by a stripper 19. A screw conveyer 23 for introducing the falling salt through a hopper 22 and conveying the salt to a purification processing unit (not shown) is provided. The contact surface between the smoke exhaust duct 2, the drum main body 5, and the chimney 3 is interposed with high-temperature packing to prevent external leakage of smoke and prevent pollution in the factory.
【００１９】以上のような設備において、海水ポンプ１
１により海から汲み上げられた海水は、濾過タンク１２
で濾過され、予熱タンク１３で予熱されてから、乾燥機
４の温度に応じて流量を自動調整しながら（温度が低く
なれば流量を少なくし、温度が高くなれば流量を多くす
る）、回転するドラム本体５の外表面に滴下又は塗布さ
れる。ドラム本体５上では、水分は蒸発して蒸気回収器
２０により回収され、塩分は、ドラム本体５の外表面に
付着してドラム本体５上で乾燥されてから剥離器１９で
剥離されてスクリューコンベア２３中に落下し、精製処
理部において食塩として精製される。In the above facilities, the seawater pump 1
1 is pumped from the sea by the filtration tank 12
After being filtered and preheated in the preheating tank 13, the flow rate is automatically adjusted according to the temperature of the dryer 4 (the flow rate is reduced when the temperature is low, and the flow rate is increased when the temperature is high). Is dropped or applied to the outer surface of the drum body 5. On the drum main body 5, the water evaporates and is collected by the steam recovery unit 20, and the salt adheres to the outer surface of the drum main body 5, is dried on the drum main body 5, is separated by the stripper 19, and is separated by the screw conveyor. 23, and is purified as salt in the purification processing section.
【００２０】冷却器２１の内部には螺旋状の冷却パイプ
２４が配置され、この冷却パイプ２４中には、冷媒とし
て海水が流入・流出しているため、蒸気回収器２０に入
った排蒸気は冷却されて淡水として回収される。A spiral cooling pipe 24 is arranged inside the cooler 21. In the cooling pipe 24, since seawater flows in and out as a refrigerant, the steam discharged into the steam recovery unit 20 is discharged. Cooled and recovered as fresh water.
【００２１】上記のような方法により、北海道北部の綺
麗な海水１０００Ｋｇから食塩３５Ｋｇを得た。図３に
その成分を現行の市販精製塩と比較して示す。According to the above-mentioned method, 35 kg of salt was obtained from 1000 kg of clean seawater in northern Hokkaido. FIG. 3 shows the components in comparison with current commercially available purified salts.
【００２２】次に、本発明の第２の実施形態を図４、図
５及び図６を参照して説明する。図４において、海水ポ
ンプ１１、濾過タンク１２、予熱タンク１３、送水ポン
プ１４、海水導入配管１５、海水滴下又は塗布器１６、
剥離器１９、蒸気回収器２０及び冷却器２１について
は、図１に示した例と同様であるが、第２の実施形態で
は、排煙に代えて水蒸気を加熱媒体として用いることか
ら、回転ドラム型乾燥機４のドラム本体５中に図示しな
い水蒸気発生装置から水蒸気を送入する。Next, a second embodiment of the present invention will be described with reference to FIGS. 4, 5 and 6. 4, a seawater pump 11, a filtration tank 12, a preheating tank 13, a water pump 14, a seawater introduction pipe 15, a seawater drip or applicator 16,
The stripper 19, the vapor recovery unit 20, and the cooler 21 are the same as those in the example shown in FIG. 1, but in the second embodiment, since steam is used as a heating medium instead of flue gas, the rotary drum is used. Steam is fed into the drum body 5 of the mold dryer 4 from a steam generator (not shown).
【００２３】水蒸気の温度はほぼ一定であるため、図４
の例では、海水の流量調整のための温度センサ１７、イ
ンバータ１８及び送水ポンプ１４は省略されているが、
図１の場合と同様に温度変化を検出して流量調整しても
よいこと勿論である。Since the temperature of water vapor is almost constant, FIG.
In the example, the temperature sensor 17, the inverter 18, and the water pump 14 for adjusting the flow rate of seawater are omitted,
As a matter of course, the flow rate may be adjusted by detecting a temperature change as in the case of FIG.
【００２４】ドラム本体５中に送入されて海水の乾燥に
使用された水蒸気は、ドラム本体５からトラップ２５を
経由してドレン水として排出される。The water vapor fed into the drum main body 5 and used for drying seawater is discharged from the drum main body 5 via the trap 25 as drain water.
【００２５】ドラム本体５の外表面に付着し剥離器１９
で剥離された塩分は、図４の例では、回転ドラム型乾燥
機４の下方に配置されている蒸気乾燥式撹拌コンベア２
６内に投入され、この蒸気乾燥式撹拌コンベア２６内で
撹拌しつつ乾燥されて精製処理部へ搬送される。塩分
は、ドラム本体５の外周面でも乾燥されるが、乾燥し過
ぎると塩分が蒸気と共に浮上して、蒸気回収器２０と冷
却器２１とによる淡水化性能が低下するので、ドラム本
体５の外周面上での塩分の乾燥はある程度に抑え、蒸気
乾燥式撹拌コンベア２６で充分な乾燥を行う。The peeler 19 adheres to the outer surface of the drum body 5 and
In the example of FIG. 4, the salt separated by the steam drying type stirring conveyor 2 disposed below the rotary drum type dryer 4.
6 and is dried while being stirred in the steam drying type stirring conveyor 26, and is conveyed to the refining processing section. The salt is also dried on the outer peripheral surface of the drum body 5. However, if the salt is excessively dried, the salt floats together with the steam, and the desalination performance of the steam recovery unit 20 and the cooler 21 is reduced. Drying of the salt content on the surface is suppressed to a certain degree, and sufficient drying is performed by the steam drying type stirring conveyor 26.
【００２６】図５及び図６に蒸気乾燥式撹拌コンベア２
６の構成例を示す。この蒸気乾燥式撹拌コンベア２６で
は、断面半円形の樋２７の周壁を中空にしてその中空内
部に、ドラム本体５内と同様に水蒸気発生装置から水蒸
気を送入する。樋２７の内側には、多数の撹拌送り羽根
２８が、同時に旋回するように１本の回転軸２９に装着
されている。FIGS. 5 and 6 show a steam drying type stirring conveyor 2.
6 shows a configuration example. In the steam drying type stirring conveyor 26, the peripheral wall of the trough 27 having a semicircular cross section is made hollow, and steam is fed into the hollow from the steam generator as in the drum body 5. Inside the gutter 27, a large number of agitation feed blades 28 are mounted on one rotating shaft 29 so as to simultaneously rotate.
【００２７】従って、ドラム本体５の外周面から剥離さ
れて樋２７内に落ち込んだ塩分は、撹拌送り羽根２８に
より撹拌しつつ搬送されながら、樋２７の周壁の中空内
部へ送入される水蒸気で加熱されて乾燥される。なお、
予熱タンク１３の熱源も水蒸気を用いることができる。Accordingly, the salt that has been separated from the outer peripheral surface of the drum body 5 and has fallen into the gutter 27 is transported while being stirred by the agitating / feeding blades 28, while being transported into the hollow inside of the peripheral wall of the gutter 27 by steam. It is heated and dried. In addition,
The heat source of the preheating tank 13 can also use steam.
【００２８】[0028]
【発明の効果】以上述べたように請求項１に係る発明に
よれば、人体の栄養上大切なカルシウムやマグネシウム
等が含まれた自然塩を、海産物の加工工場等から排出さ
れる排煙の熱を有効利用して海水から容易にかつ経済的
に製塩できる。乾燥機の温度を検出しながら、その検出
した温度に応じて海水を流量調整しつつドラム本体の外
表面に滴下又は塗布するので、排煙の温度変化に影響さ
れることなく、品質の安定した食塩を得ることができ
る。As described above, according to the first aspect of the present invention, natural salt containing calcium, magnesium and the like, which are important for human nutrition, can be converted into flue gas discharged from a processing plant for marine products. Salt can be easily and economically produced from seawater by effectively utilizing heat. While detecting the temperature of the dryer, seawater is dropped or applied to the outer surface of the drum body while adjusting the flow rate of seawater according to the detected temperature, so that the quality is stable without being affected by the temperature change of the smoke exhaust. Salt can be obtained.
【００２９】また、請求項２に係る発明によれば、人体
の栄養上大切なカルシウムやマグネシウム等が含まれた
自然塩を、水蒸気の熱を利用して海水から容易にかつ経
済的に製塩できる。乾燥機の温度を検出しながら、その
検出した温度に応じて海水を流量調整しつつドラム本体
の外表面に滴下又は塗布するので、水蒸気の温度変化に
影響されることなく、品質の安定した食塩を得ることが
できる。回転ドラム型乾燥機のドラム本体から剥離した
塩分を、加熱媒体として水蒸気を送入されている蒸気乾
燥式撹拌コンベアで撹拌しつつ搬送しながら乾燥させる
ので、塩分の乾燥も水蒸気を利用して経済的に行うこと
ができるとともに、ドラム本体の外周面での塩分の乾燥
はある程度に抑え、蒸気乾燥式撹拌コンベアで充分な乾
燥を行えるので、ドラム本体からの排蒸気には塩分を含
まないため、淡水化も効率良く行える。According to the second aspect of the present invention, natural salts containing calcium, magnesium, and the like, which are important for human nutrition, can be easily and economically produced from seawater using the heat of steam. . While detecting the temperature of the dryer, seawater is dropped or applied to the outer surface of the drum body while adjusting the flow rate of seawater according to the detected temperature, so that salt of stable quality is not affected by the temperature change of steam. Can be obtained. The salt separated from the drum body of the rotary drum dryer is dried while being transported while being stirred by a steam-drying type stirring conveyor that is supplied with steam as a heating medium. In addition to drying the salt on the outer peripheral surface of the drum body to a certain extent and performing sufficient drying with a steam drying type stirring conveyor, the steam discharged from the drum body does not contain salt, Desalination can be performed efficiently.
【００３０】請求項３に係る発明によれば、ドラム本体
から剥離した塩分を乾燥させる蒸気乾燥式撹拌コンベア
が、その樋の周壁の中空内部に水蒸気を送入し、樋内に
投入された塩分を撹拌送り羽根で撹拌しながら搬送する
ので、塩分の乾燥と搬送を効率良く行える。According to the third aspect of the present invention, the steam-drying type stirring conveyor for drying the salt separated from the drum body feeds the steam into the hollow inside of the peripheral wall of the gutter, and the salt introduced into the gutter. Is transported while being stirred by the stirring / feeding blades, so that the salt can be efficiently dried and transported.
【図１】本発明の第１の実施形態のシステム構成図であ
る。FIG. 1 is a system configuration diagram of a first embodiment of the present invention.
【図２】同上において、乾燥機のドラム本体に対する海
水滴下又は塗布器と剥離器とスクリューコンベアの配置
関係を示す図である。FIG. 2 is a diagram showing an arrangement relationship of a seawater dripping or applicator, a peeler, and a screw conveyor with respect to a drum main body of the dryer in the above.
【図３】第１の実施形態で得た食塩と現行の市販精製塩
との成分の比較図である。FIG. 3 is a comparison diagram of the components of the salt obtained in the first embodiment and the current commercially available purified salt.
【図４】本発明の第２の実施形態のシステム構成図であ
る。FIG. 4 is a system configuration diagram of a second embodiment of the present invention.
【図５】第２の実施形態で使用する蒸気乾燥式撹拌コン
ベアの平面図である。FIG. 5 is a plan view of a steam drying type stirring conveyor used in the second embodiment.
【図６】同上の断面図である。FIG. 6 is a sectional view of the same.
１ ボイラ等の燃焼機 ２ 排煙ダクト ３ 煙突 ４ 回転ドラム型乾燥機 ５ ドラム本体 ６ 軸受 ７ スプロケットホイール ８ モータ ９ スプロケットホイール １０ チェーン １１ 海水ポンプ １２ 濾過タンク １３ 予熱タンク １４ 送水ポンプ １５ 海水導入配管 １６ 海水滴下又は塗布器 １７ 温度センサ １８ インバータ １９ 剥離器 ２０ 蒸気回収器 ２１ 冷却器 ２２ ホッパ ２３ スクリューコンベア ２４ 冷却パイプ ２５ トラップ ２６ 蒸気乾燥式撹拌コンベア ２７ 樋 ２８ 撹拌送り羽根 ２９ 回転軸 DESCRIPTION OF SYMBOLS 1 Combustor of boiler etc. 2 Smoke exhaust duct 3 Chimney 4 Rotary drum type dryer 5 Drum main body 6 Bearing 7 Sprocket wheel 8 Motor 9 Sprocket wheel 10 Chain 11 Seawater pump 12 Filtration tank 13 Preheating tank 14 Water pump 15 Seawater introduction pipe 16 Seawater dripping or coating device 17 Temperature sensor 18 Inverter 19 Stripper 20 Steam recovery device 21 Cooler 22 Hopper 23 Screw conveyor 24 Cooling pipe 25 Trap 26 Steam drying type stirring conveyor 27 Gutter 28 Stirring feed blade 29 Rotating shaft
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C01D 3/06 B01B 1/00 - 1/08 B01D 1/00 - 1/30 B01D 3/00 - 8/00 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) C01D 3/06 B01B 1/00-1/08 B01D 1/00-1/30 B01D 3/00-8 / 00
Claims (3)
回転ドラム型乾燥機を配置し、該乾燥機の温度を検出し
ながらその回転するドラム本体の外表面に、海水を、検
出した温度に応じて流量調整しつつ滴下又は塗布して水
分を蒸発させ、ドラム本体の外表面に付着した塩分を剥
離して採取することを特徴とする、海水より食塩の製造
法。1. A rotary drum type dryer is arranged in the middle of a smoke exhaust path from a boiler or other combustor, and seawater is detected on the outer surface of the rotating drum body while detecting the temperature of the dryer. A method for producing salt from seawater, comprising: evaporating water by dripping or applying while adjusting the flow rate according to the temperature, and removing and collecting salt attached to the outer surface of the drum body.
蒸気を送入し、該乾燥機の温度を検出しがらその回転す
るドラム本体の外表面に、海水を、検出した温度に応じ
て流量調整しつつ滴下又は塗布して水分を蒸発させ、ド
ラム本体の外表面に付着した塩分をある程度の乾燥度に
抑え、これを剥離して、加熱媒体として水蒸気を送入さ
れている蒸気乾燥式撹拌コンベアに投入し、撹拌しつつ
搬送しながら乾燥させることを特徴とする、海水より食
塩の製造法。2. Steam is fed as a heating medium into a rotary drum type dryer, and while detecting the temperature of the dryer, seawater is adjusted on the outer surface of the rotating drum body in accordance with the detected temperature. A steam-drying agitating conveyer in which water is evaporated by dripping or applying while keeping the salt attached to the outer surface of the drum body to a certain degree of drying, peeling it off, and feeding steam as a heating medium A method for producing salt from seawater, characterized in that the salt is put into a container and dried while being stirred and transported.
空内部に水蒸気を送入し、樋内に投入された塩分を撹拌
送り羽根で撹拌しながら搬送することを特徴とする、請
求項２に記載の、海水より食塩の製造法。3. The steam drying type stirring conveyor is characterized in that steam is fed into the hollow inside of the peripheral wall of the gutter, and the salt introduced into the gutter is conveyed while being agitated by the agitating feed blade. 3. The method for producing salt from seawater according to 2.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10006862A JP2903466B2 (en) | 1997-05-15 | 1998-01-16 | Production of salt from seawater |
| TW87107031A TW575521B (en) | 1997-05-15 | 1998-05-06 | Method of making salt from seawater |
| KR1019980016246A KR100269770B1 (en) | 1997-05-15 | 1998-05-07 | A method of making salt from sea-water |
| FR9806176A FR2763324B1 (en) | 1997-05-15 | 1998-05-15 | PROCESS FOR PRODUCING SALT FROM SEAWATER USING A ROTARY DRUM DRYER |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9-139126 | 1997-05-15 | ||
| JP13912697 | 1997-05-15 | ||
| JP10006862A JP2903466B2 (en) | 1997-05-15 | 1998-01-16 | Production of salt from seawater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1129321A JPH1129321A (en) | 1999-02-02 |
| JP2903466B2 true JP2903466B2 (en) | 1999-06-07 |
Family
ID=26341071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10006862A Expired - Fee Related JP2903466B2 (en) | 1997-05-15 | 1998-01-16 | Production of salt from seawater |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2903466B2 (en) |
| KR (1) | KR100269770B1 (en) |
| FR (1) | FR2763324B1 (en) |
| TW (1) | TW575521B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549643A (en) * | 2015-12-08 | 2016-05-04 | 成都捷冠科技有限公司 | Intelligent temperature-control system based on current driving circuit and used for paint spraying dryer |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3077062B1 (en) * | 1999-02-09 | 2000-08-14 | 田上食品工業株式会社 | Production of salt from seawater |
| KR20020087598A (en) * | 2001-05-15 | 2002-11-23 | 황택성 | Salt recovery machine from a nitrate-contaminated brine |
| KR20010096679A (en) * | 2001-07-12 | 2001-11-08 | 김선회 | Salt fabrication apparatus from sea water |
| KR100436222B1 (en) * | 2002-05-25 | 2004-06-19 | 서희동 | Manufacturing method of boil down salt and salty water |
| JP3855238B2 (en) * | 2003-06-05 | 2006-12-06 | 田上食品工業株式会社 | Salt production equipment |
| KR101385101B1 (en) * | 2008-06-27 | 2014-04-15 | 동부대우전자 주식회사 | Valve control method of gas type dryer |
| JP5600489B2 (en) * | 2010-06-28 | 2014-10-01 | 京史 寺本 | Solution purification apparatus and purification method |
| KR101135149B1 (en) * | 2010-07-08 | 2012-04-16 | 순천대학교 산학협력단 | Smart monitoring system for saltern using sensor network |
| JP2014083474A (en) * | 2012-10-19 | 2014-05-12 | Ohbayashi Corp | Apparatus and method for treating mixture |
| CN109110847A (en) * | 2018-08-22 | 2019-01-01 | 黄冠盛 | Independent wind power driving seawater desalting device |
| CN109879345A (en) * | 2019-04-09 | 2019-06-14 | 上海龙净环保科技工程有限公司 | A kind of coal-burning power plant's high slat-containing wastewater governing system and method |
| CN110683601A (en) * | 2019-11-27 | 2020-01-14 | 衡阳丰联精细化工有限公司 | Energy-conserving evaporation crystallization device of high salt waste water |
| CN112587945A (en) * | 2020-12-22 | 2021-04-02 | 刘杨 | Cabinet type concentration drying equipment |
| KR102302082B1 (en) * | 2021-02-01 | 2021-09-13 | 박연희 | Electric concentrated extraction apparatus capable of rapid extraction and concentration |
| CN114887348A (en) * | 2022-06-10 | 2022-08-12 | 中国海洋大学 | Edible salt crystallization device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1475314A (en) * | 1918-04-12 | 1923-11-27 | Sherwin Williams Co | Method of and apparatus for evaporating liquids |
| DE472789C (en) * | 1925-11-20 | 1930-01-02 | Carl Knoch Dr | Device for the production of water-soluble dry preparations from liquids containing fat and protein |
| DE937286C (en) * | 1953-04-24 | 1956-01-05 | Ver Badische Staats Salinen Du | Process and device for the extraction of salts from brine |
| GB911130A (en) * | 1959-11-10 | 1962-11-21 | Dominion Tar & Chemical Co | Salt production |
| DE2740031A1 (en) * | 1977-09-06 | 1979-03-15 | Bosch Gmbh Robert | Industrial waste disposal - by evaporation of film on revolving heated horizontal drum |
-
1998
- 1998-01-16 JP JP10006862A patent/JP2903466B2/en not_active Expired - Fee Related
- 1998-05-06 TW TW87107031A patent/TW575521B/en not_active IP Right Cessation
- 1998-05-07 KR KR1019980016246A patent/KR100269770B1/en not_active IP Right Cessation
- 1998-05-15 FR FR9806176A patent/FR2763324B1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549643A (en) * | 2015-12-08 | 2016-05-04 | 成都捷冠科技有限公司 | Intelligent temperature-control system based on current driving circuit and used for paint spraying dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100269770B1 (en) | 2000-10-16 |
| FR2763324A1 (en) | 1998-11-20 |
| TW575521B (en) | 2004-02-11 |
| KR19980086807A (en) | 1998-12-05 |
| FR2763324B1 (en) | 2000-03-24 |
| JPH1129321A (en) | 1999-02-02 |
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