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JP3393786B2 - How to treat rock salt solution - Google Patents
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JP3393786B2 - How to treat rock salt solution - Google Patents

How to treat rock salt solution

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Publication number
JP3393786B2
JP3393786B2 JP06289197A JP6289197A JP3393786B2 JP 3393786 B2 JP3393786 B2 JP 3393786B2 JP 06289197 A JP06289197 A JP 06289197A JP 6289197 A JP6289197 A JP 6289197A JP 3393786 B2 JP3393786 B2 JP 3393786B2
Authority
JP
Japan
Prior art keywords
salt solution
rock salt
tank
evaporator
mixed
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 - Lifetime
Application number
JP06289197A
Other languages
Japanese (ja)
Other versions
JPH10259019A (en
Inventor
栄 遠藤
治雄 飯田
Original Assignee
遠藤食品株式会社
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Publication date
Application filed by 遠藤食品株式会社 filed Critical 遠藤食品株式会社
Priority to JP06289197A priority Critical patent/JP3393786B2/en
Publication of JPH10259019A publication Critical patent/JPH10259019A/en
Application granted granted Critical
Publication of JP3393786B2 publication Critical patent/JP3393786B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Removal Of Specific Substances (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】この発明は、塩分濃度の高い
岩塩溶液から無臭、白色の塩の結晶を回収すると共に、
塩分濃度の少ない水を放流する岩塩溶液の処理方法に関
する。 【0002】 【従来の技術】すし屋などで大量に消費されるガリ(生
姜のスライスの甘酢漬け)の原料としての生姜のスライ
スは、中国、東南アジアなどから生姜のスライス45k
gと、塩分濃度約20%の岩塩溶液約15立とをビニー
ル袋に密封して入れ、1袋宛木箱で包装して輸入され
る。 【0003】 【発明が解決しようとする課題】岩塩溶液を蒸発処理す
ることにより岩塩の結晶が得られるが、その結晶は褐色
で、特色の醋酸臭を有するため利用価値は無い。そし
て、河川に放流する場合、塩分の濃度に規制がないた
め、漬物工場などでは木箱からビニール袋を取出し、袋
を破って岩塩溶液を放流して捨て、袋内の生姜スライス
を取出してガリに加工しているのが現状である。 【0004】 【課題を解決するための手段】この発明は、上記のよう
に従来、放流して捨てゝいた岩塩溶液から無臭で、白色
の塩の結晶を回収して利用すると共に、環境を損なうこ
とがないように塩分の少ない水を放流することを目的に
開発されたもので、活性炭入りのタンクに岩塩溶液を貯
え、この岩塩溶液を送液ポンプにより真空発生装置を付
属した蒸発釜に所定量供給する際に、該岩塩溶液に消泡
剤を一定量混合し、前記蒸発釜で岩塩溶液と消泡剤の混
合液を加熱し、発生する蒸気を真空発生装置で吸引し、
該装置内の冷却水と混合して放流し、蒸発釜内に残る塩
の結晶を取出すことを特徴とする。 【0005】 【実施例】生姜スライス45kg、岩塩溶液15立が入
ったビニール袋10を、木箱をあけ、アームリフターで
吊り上げて木箱から取出し、底に5mmの網を有するホ
ッパー11の真上に運び、ビニール袋10の底を切開し
て生姜スライスと岩塩溶液をホッパーに次々と空ける。
ホッパーには底の網11′の上に斜め上向きにホッパー
の外に延びる無端の網材からなるコンベア12が設けて
あり、ホッパーの下方には液の受箱13が設けてある。
従って、岩塩溶液と、ホッパーの底の網を通過した5m
m以下の生姜の屑は受箱に入り、大部分の生姜スライス
はコンベア12でホッパーの外に搬出され、生姜の洗
浄、加工ラインに供給される。 【0006】受箱13内の岩塩溶液と屑生姜は供給パイ
プ14によって落差で地下の容量1100立の第1タン
ク16に供給される。供給パイプ14の先端には網目2
mmの袋15を被せて取付けてある。従って、2mm以
上の大きさの屑生姜は袋15の中に残るので、袋は時々
交換する。この第1タンク16中にはタンク内の岩塩溶
液を地上の第2タンク19に送液する水中ポンプP1 が
設けてある。 【0007】第2タンク19の容量は2200立で、内
部には網目5mmのビニールネットで包んだ活性炭が6
kg入れてある。又、この第2タンク19は内部の液面
の上限と下限を検出するセンサー21U,21Dを有す
る。従って、第2タンク内の岩塩溶液の液面が下限にな
ると、これをセンサー21Dが検出し、第1タンクの水
中ポンプP1 を運転し、第1タンク中の岩塩溶液を第2
タンクに送液する。そして、第2タンク中の岩塩溶液の
液面が上限に達すると、これをセンサ21Uが検出して
水中ポンプP1 の運転を停める。水中ポンプP1 で第2
タンクに岩塩溶液を送液する送液パイプ17の先端には
網目1mmの袋18を被せて取付け、1mm以上の屑生
姜は第2タンクに入らないようにしてある。この袋の中
には1mm以上の屑生姜が残るので、袋は時々交換す
る。 【0008】この第2タンクに入った岩塩溶液は、タン
ク中に網袋に入れて収容した活性炭20と接触し、活性
炭の吸着作用により脱色、脱臭される。 【0009】第2タンク内の岩塩溶液は送液ポンプP2
により密閉の濾過タンク22を経て蒸発釜24に所定量
宛供給し、蒸発釜で水分を蒸発させ、岩塩の結晶を得
る。濾過タンク22内にはメッシュの細かい麻袋23が
設けてあり、送液ポンプP2 で供給される岩塩溶液は麻
袋23に上から入り、混入している1mm以下の屑生姜
を麻袋で除去し、濾過タンクの底部から蒸発釜24に行
く。岩塩溶液の塩分濃度は約20%であり、この岩塩溶
液を濾過タンクの麻袋を通して蒸発釜に約2kg/cm
2 の圧力で供給するために、送液ポンプP2 にはスネー
クポンプを使用するのが好ましい。麻袋の目は屑生姜で
詰まるため、約1週間毎にタンクから取出し、洗浄して
は使用する。 【0010】26はポンプP3 で濾過タンク内に消泡剤
を供給するための消泡剤を入れた消泡タンクで、そのポ
ンプP3 は送液ポンプ(スネークポンプ)P2 と連動
し、送液ポンプが蒸発釜に供給する所定量の岩塩溶液に
一定量の消泡剤を濾過タンク中で混合する。この消泡剤
の添加は、蒸発釜で岩塩溶液を蒸発処理する際に、釜内
での液の泡立ちの防止と、後述の真空吸込みの効率化を
行うと共に、生成した塩の結晶が釜に焼付くのを防止す
るために行う。 【0011】蒸発釜24には、攪拌装置を有する蒸気式
二重釜で、真空発生装置25を付属した真空ケトルミキ
サー(株式会社サムソン、商品名)を使用した。 【0012】消泡剤はシリコーン乳剤を20倍に薄めた
稀釈液を使用し、消泡タンク26に20立入れ、少なく
なれば随時、補給する。 【0013】送液ポンプ(スネークポンプ)P2 を4分
間運転し、岩塩溶液360立(約24袋分)を濾過タン
ク22を経て蒸発釜24に供給し、この際、送液ポンプ
と連動するポンプP3 で希釈した消泡剤100ccを濾
過タンク22に供給し、蒸発釜に供給される岩塩溶液に
混合した。 【0014】ポンプP2 ,P3 の運転が停止すると蒸発
釜24の電源が自動的にONになり、蒸発が開始する。
蒸発釜の稼働中の最高温度は97℃で、83分稼働する
ことにより蒸発が完了し、電源はOFFになる。その
間、発生する蒸気は真空発生装置25に吸入され、該装
置内の冷却水を約40℃に加温する。これにより釜内に
は白色で、無臭の塩の結晶が約27kg生成するので、
釜の蓋を開き、釜を180°転回して塩の結晶を取出
し、真空発生装置内の加温冷却水は排水し、放流する。
放流する加温冷却水の塩分濃度は1%であった。 【0015】得られた塩の結晶は99%塩化ナトリウム
であり、食品の加工に再利用することができた。 【0016】 【発明の効果】以上で明らかなように、本発明では岩塩
溶液を活性炭入りのタンクに貯えることにより岩塩特色
の色と臭いを活性炭で吸着除去するので蒸発処理によっ
て白く、無臭の塩の結晶を回収し、再利用できる。そし
て、蒸発釜に岩塩溶液を供給する際に一定量の消泡剤を
添加するので、釜内での液の泡立ちの抑制、塩の結晶の
焼付きが防止され、効果的に蒸発処理が行える。こうし
て、従来は放流していた岩塩溶液の無駄をなくすると共
に、塩分濃度の低い水を放流し、環境破壊を防止するこ
とができる。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering odorless and white salt crystals from a rock salt solution having a high salt concentration.
The present invention relates to a method for treating a rock salt solution that discharges water having a low salt concentration. 2. Description of the Related Art Ginger slices used as raw materials for gullies (ginger slices pickled in sweet and sour pickles) consumed in large quantities at sushi restaurants are ginger slices 45 kg from China and Southeast Asia.
g and about 15 liters of a rock salt solution having a salt concentration of about 20% are sealed in a plastic bag, packed in a wooden box for each bag, and imported. [0003] Rock salt crystals can be obtained by evaporating the rock salt solution, but the crystals are brown and have a characteristic acetic acid odor, so that they are not useful. And when discharging into rivers, there is no regulation on the concentration of salt, so pickle factories remove plastic bags from wooden boxes, break the bags, release the rock salt solution and discard, take out the ginger slices in the bags and remove them. It is currently processed. [0004] As described above, the present invention recovers and utilizes odorless and white salt crystals from a rock salt solution that has been conventionally discharged and discarded, and impairs the environment. Developed with the purpose of discharging water with low salt content so as not to cause a problem, the rock salt solution is stored in a tank containing activated carbon, and this rock salt solution is stored in an evaporator equipped with a vacuum generator by a liquid feed pump. When supplying a fixed amount, a predetermined amount of an antifoaming agent is mixed with the rock salt solution, the mixed solution of the rock salt solution and the antifoaming agent is heated in the evaporator, and the generated steam is sucked by a vacuum generator,
It is characterized in that it is mixed with cooling water in the apparatus and discharged, and salt crystals remaining in the evaporator are taken out. [0005] A plastic bag 10 containing 45 kg of ginger slices and 15 salt of rock salt solution is opened in a wooden box, lifted with an arm lifter, taken out of the wooden box, and placed directly above a hopper 11 having a 5 mm net at the bottom. The ginger slice and the rock salt solution are emptied one after another into the hopper.
The hopper is provided with a conveyor 12 made of an endless net material extending obliquely upward and out of the hopper on a bottom net 11 ', and a liquid receiving box 13 is provided below the hopper.
Therefore, the rock salt solution and 5m passed through the net at the bottom of the hopper
The ginger waste of m or less enters the receiving box, and most of the ginger slices are carried out of the hopper by the conveyor 12 and supplied to the ginger washing and processing line. The rock salt solution and the ginger waste in the receiving box 13 are supplied by a supply pipe 14 to a first tank 16 having a capacity of 1100 cubic meters under the head. At the end of the supply pipe 14, mesh 2
mm bag 15 is attached. Accordingly, ginger waste having a size of 2 mm or more remains in the bag 15, and the bag is sometimes replaced. The first tank 16 is provided with a submersible pump P1 for sending the rock salt solution in the tank to the second tank 19 on the ground. [0007] The capacity of the second tank 19 is 2200 cubic meters, and 6 carbons of activated carbon wrapped in a vinyl net of 5 mm mesh inside.
kg. The second tank 19 has sensors 21U and 21D for detecting the upper and lower limits of the internal liquid level. Therefore, when the liquid level of the rock salt solution in the second tank becomes the lower limit, the sensor 21D detects this, and the submersible pump P1 of the first tank is operated to remove the rock salt solution in the first tank from the second tank.
Send the liquid to the tank. When the level of the rock salt solution in the second tank reaches the upper limit, this is detected by the sensor 21U and the operation of the submersible pump P1 is stopped. Second with submersible pump P1
A tip of a liquid sending pipe 17 for sending a rock salt solution to the tank is covered with a bag 18 having a mesh of 1 mm, and is attached so that scrap ginger of 1 mm or more does not enter the second tank. Since ginger waste of 1 mm or more remains in this bag, the bag is replaced from time to time. The rock salt solution contained in the second tank comes into contact with the activated carbon 20 contained in a net bag in the tank, and is decolorized and deodorized by the adsorption action of the activated carbon. [0009] The rock salt solution in the second tank is supplied by a liquid sending pump P2.
To supply a predetermined amount to the evaporator 24 through the closed filtration tank 22 to evaporate the water in the evaporator to obtain rock salt crystals. A fine hemp bag 23 having a fine mesh is provided in the filtration tank 22, and the rock salt solution supplied by the liquid feed pump P2 enters the hemp bag 23 from above, and the mixed ginger of 1 mm or less is removed by the hemp bag. It goes to the evaporator 24 from the bottom of the tank. The salt concentration of the rock salt solution is about 20%, and this rock salt solution is passed through a hemp bag of a filtration tank into an evaporator at about 2 kg / cm.
In order to supply at a pressure of 2 , it is preferable to use a snake pump as the liquid sending pump P2. The eyes of hemp bags are clogged with waste ginger, so take them out of the tank about once a week, wash them and use them. Reference numeral 26 denotes a pump P3, which is a defoaming tank containing an antifoaming agent for supplying an antifoaming agent into the filtration tank. The pump P3 works in conjunction with a liquid feeding pump (snake pump) P2, and a liquid feeding pump. Mixes a fixed amount of antifoam with a predetermined amount of rock salt solution to be supplied to the evaporator in a filtration tank. The addition of this defoamer prevents the bubbling of the liquid in the kettle and improves the efficiency of vacuum suction described later when evaporating the rock salt solution in the evaporator, and the crystals of the generated salt are transferred to the kettle. Perform to prevent seizure. As the evaporator 24, a vacuum kettle mixer (Samson Co., Ltd., trade name) equipped with a vacuum generator 25 was used. As a defoaming agent, a diluting solution obtained by diluting a silicone emulsion by 20 times is used. The liquid feeding pump (snake pump) P2 is operated for 4 minutes to supply 360 salt (about 24 bags) of the rock salt solution to the evaporator 24 through the filtration tank 22. At this time, a pump interlocked with the liquid feeding pump 100 cc of the defoamer diluted with P3 was supplied to the filtration tank 22 and mixed with the rock salt solution supplied to the evaporator. When the operations of the pumps P2 and P3 are stopped, the power of the evaporator 24 is automatically turned on, and the evaporation starts.
The maximum temperature during the operation of the evaporator is 97 ° C., and when the evaporator is operated for 83 minutes, the evaporation is completed and the power is turned off. During that time, the generated steam is sucked into the vacuum generating device 25, and the cooling water in the device is heated to about 40 ° C. As a result, about 27 kg of white, odorless salt crystals are generated in the pot.
Open the lid of the kettle, rotate the kettle 180 ° to take out the salt crystals, drain the heated cooling water in the vacuum generator and discharge it.
The salt concentration of the heated cooling water discharged was 1%. The crystals of the obtained salt were 99% sodium chloride and could be reused in food processing. As is clear from the above, according to the present invention, the color and odor of the rock salt characteristic are adsorbed and removed by the activated carbon by storing the rock salt solution in the tank containing the activated carbon. Can be recovered and reused. Since a certain amount of antifoaming agent is added when supplying the rock salt solution to the evaporating pot, the suppression of foaming of the liquid in the pot and the seizure of salt crystals are prevented, so that the evaporating process can be performed effectively. . In this way, it is possible to eliminate waste of the rock salt solution that has been conventionally discharged, and to discharge water having a low salt concentration, thereby preventing environmental destruction.

【図面の簡単な説明】 【図1】本発明の一実施例のフローシートである。 【符号の説明】 10 岩塩溶液入りのビニール袋 19 第2タンク 20 第2タンク中の活性炭 24 蒸発釜 25 真空発生装置 26 消泡剤入りタンク[Brief description of the drawings] FIG. 1 is a flow sheet according to one embodiment of the present invention. [Explanation of symbols] 10 Plastic bag with salt solution 19 Second tank 20 Activated carbon in the second tank 24 Evaporation pot 25 Vacuum generator 26 Defoaming tank

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) C01D 3/06 B01D 1/00 C02F 1/58 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) C01D 3/06 B01D 1/00 C02F 1/58

Claims (1)

(57)【特許請求の範囲】 【請求項1】 活性炭入りのタンクに岩塩溶液を貯え、
この岩塩溶液を送液ポンプにより真空発生装置を付属し
た蒸発釜に所定量供給する際に、該岩塩溶液に消泡剤を
一定量混合し、前記蒸発釜で岩塩溶液と消泡剤の混合液
を加熱し、発生する蒸気を真空発生装置で吸引し、該装
置内の冷却水と混合して放流し、蒸発釜内に残る塩の結
晶を取出すことを特徴とする岩塩溶液の処理方法。
(57) [Claims 1] A rock salt solution is stored in a tank containing activated carbon,
When a predetermined amount of this rock salt solution is supplied to an evaporator equipped with a vacuum generator by a liquid feed pump, a certain amount of an antifoaming agent is mixed with the rock salt solution, and the mixed solution of the rock salt solution and the defoamer is supplied to the evaporator. A method for treating a rock salt solution, comprising heating steam, sucking generated steam by a vacuum generator, mixing with cooling water in the device, discharging the mixed steam, and removing salt crystals remaining in the evaporator.
JP06289197A 1997-03-17 1997-03-17 How to treat rock salt solution Expired - Lifetime JP3393786B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06289197A JP3393786B2 (en) 1997-03-17 1997-03-17 How to treat rock salt solution

Publications (2)

Publication Number Publication Date
JPH10259019A JPH10259019A (en) 1998-09-29
JP3393786B2 true JP3393786B2 (en) 2003-04-07

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Country Link
JP (1) JP3393786B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020087598A (en) * 2001-05-15 2002-11-23 황택성 Salt recovery machine from a nitrate-contaminated brine
KR100415556B1 (en) * 2001-05-15 2004-01-24 재단법인 충남대학교 산학연교육연구재단 Salt recovery by microwave from a nitrate-contaminated brine
JP5170304B2 (en) * 2009-03-31 2013-03-27 株式会社島津製作所 Preparative purification equipment
CN103693777B (en) * 2013-12-12 2015-01-21 河北工业大学 A kind of purification method of amine liquid

Also Published As

Publication number Publication date
JPH10259019A (en) 1998-09-29

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