JPH05139701A - Production of aqueous sodium hyposhlorite solution - Google Patents
Production of aqueous sodium hyposhlorite solutionInfo
- Publication number
- JPH05139701A JPH05139701A JP3305148A JP30514891A JPH05139701A JP H05139701 A JPH05139701 A JP H05139701A JP 3305148 A JP3305148 A JP 3305148A JP 30514891 A JP30514891 A JP 30514891A JP H05139701 A JPH05139701 A JP H05139701A
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- sodium hypochlorite
- caustic soda
- concentration
- weight
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/04—Hypochlorous acid
- C01B11/06—Hypochlorites
- C01B11/062—Hypochlorites of alkali metals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、低食塩含量の次亜塩素
酸ソーダ水溶液を低エネルギーで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 an aqueous solution of sodium hypochlorite having a low salt content with low energy.
【０００２】[0002]
【従来の技術】漂白剤や殺菌剤として利用されている次
亜塩素酸ソーダ水溶液は、含有される食塩濃度が１０重
量％程度のものと４重量％以下のものの２種類が市販さ
れている。食塩濃度が１０重量％程度の次亜塩素酸ソー
ダ水溶液は、一般に、１８〜２０重量％程度の苛性ソー
ダ水溶液と塩素とを反応させることにより製造されてい
る。一方、食塩濃度が４重量％以下の低食塩含量の次亜
塩素酸ソーダ水溶液は、濃度の低い苛性ソーダ水溶液か
らは製造することができない。このため、通常、３６重
量％以上の苛性ソーダ水溶液が用いられている。2. Description of the Related Art Sodium hypochlorite aqueous solutions used as bleaching agents and bactericides are commercially available in two types having a salt concentration of about 10% by weight and a sodium chloride concentration of 4% by weight or less. An aqueous sodium hypochlorite solution having a salt concentration of about 10% by weight is generally produced by reacting an aqueous caustic soda solution of about 18 to 20% by weight with chlorine. On the other hand, a sodium hypochlorite aqueous solution having a low sodium chloride content of 4% by weight or less cannot be produced from a low caustic soda aqueous solution. Therefore, 36% by weight or more of a caustic soda aqueous solution is usually used.
【０００３】近年、低食塩含量の次亜塩素酸ソーダ水溶
液の需要が増加傾向にある。このために、低食塩含量の
次亜塩素酸ソーダ水溶液の増産が必要となっている。In recent years, there is an increasing demand for a low-salt sodium hypochlorite aqueous solution. For this reason, it is necessary to increase the production of an aqueous solution of sodium hypochlorite having a low salt content.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、低食塩
含量の次亜塩素酸ソーダ水溶液を増産するためには、３
６重量％以上の高濃度の苛性ソーダ水溶液が必要とな
る。苛性ソーダは食塩電解によって製造されているが、
電解槽から取り出される濃度は、通常、３２〜３５重量
％程度であるため、低食塩含量の次亜塩素酸ソーダ水溶
液を製造する場合には、電解槽から取り出された苛性ソ
ーダ水溶液をさらに蒸発缶等で濃縮する必要があった。
このために、蒸発缶に通す水蒸気や電気等のエネルギー
が大量に必要となる。However, in order to increase the production of a low sodium chloride aqueous solution of sodium hypochlorite, 3
A high-concentration caustic soda aqueous solution of 6% by weight or more is required. Caustic soda is produced by electrolysis of salt,
Since the concentration taken out from the electrolytic cell is usually about 32 to 35% by weight, when the sodium hypochlorite aqueous solution having a low salt content is produced, the caustic soda aqueous solution taken out from the electrolytic cell is further evaporated. It was necessary to concentrate at.
For this reason, a large amount of energy such as water vapor and electricity passing through the evaporator is required.
【０００５】また、電解槽から取り出された苛性ソーダ
水溶液を３６重量％程度にまで濃縮した高濃度の苛性ソ
ーダ水溶液を原料として低食塩含量の次亜塩素酸ソーダ
を製造した場合、反応により生成する食塩が反応器内に
堆積して反応器に接続された配管の閉塞等の問題が発生
し、定期的に反応器内の食塩の除去作業が必要であり、
長期間の連続運転が困難であるという問題があった。Further, when sodium hypochlorite having a low salt content is produced from a high-concentration caustic soda aqueous solution obtained by concentrating the caustic soda aqueous solution taken out from the electrolytic cell to about 36% by weight, the salt produced by the reaction is Problems such as blockage of piping connected to the reactor accumulated in the reactor occur, it is necessary to regularly remove the salt in the reactor,
There is a problem that continuous operation for a long period of time is difficult.
【０００６】[0006]
【課題を解決するための手段】本発明者らは上記の問題
に鑑み、低食塩含量の次亜塩素酸ソーダ水溶液を低エネ
ルギーで、しかも反応器内への食塩の堆積を抑制して製
造する方法について検討した結果、本発明に到達したも
のである。In view of the above problems, the inventors of the present invention produce an aqueous solution of sodium hypochlorite having a low sodium chloride content with low energy, while suppressing the accumulation of sodium chloride in the reactor. As a result of examining the method, the present invention has been achieved.
【０００７】本発明は、濃度が１８〜２５重量％の苛性
ソーダ水溶液と塩素とを反応させて次亜塩素酸ソーダ水
溶液を製造する第１工程と、該第１工程で得られた次亜
塩素酸ソーダ水溶液の存在下に濃度が４０〜５５重量％
の苛性ソーダ水溶液と塩素とを反応させて次亜塩素酸ソ
ーダ水溶液を製造する第２工程とよりなることを特徴と
する次亜塩素酸ソーダ水溶液の製造方法である。The present invention comprises a first step for producing an aqueous solution of sodium hypochlorite by reacting a sodium hydroxide aqueous solution having a concentration of 18 to 25% by weight with chlorine, and a hypochlorous acid obtained in the first step. The concentration is 40-55% by weight in the presence of an aqueous soda solution.
And a second step of producing an aqueous solution of sodium hypochlorite by reacting the aqueous solution of caustic soda with chlorine, the method for producing an aqueous solution of sodium hypochlorite.
【０００８】本発明の第１工程においては、原料として
濃度が１８〜２５重量％の苛性ソーダ水溶液が使用され
る。この苛性ソーダ水溶液は、電解槽から得られる苛性
ソーダ水溶液を蒸発缶等で濃縮することなく、水で希釈
して使用できる。In the first step of the present invention, an aqueous caustic soda solution having a concentration of 18 to 25% by weight is used as a raw material. This caustic soda aqueous solution can be used by diluting it with water without concentrating the caustic soda aqueous solution obtained from the electrolytic cell with an evaporator or the like.
【０００９】原料の苛性ソーダ水溶液の濃度が１８重量
％未満のときは、次亜塩素酸ソーダ水溶液を製造できな
い。一方、２５重量％を越えるときは、反応器内での苛
性ソーダと塩素との反応によって発生する食塩の堆積を
十分に抑制することができない。When the concentration of the caustic soda aqueous solution as the raw material is less than 18% by weight, the sodium hypochlorite aqueous solution cannot be produced. On the other hand, when it exceeds 25% by weight, it is not possible to sufficiently suppress the accumulation of salt generated by the reaction between caustic soda and chlorine in the reactor.
【００１０】第１工程では、濃度が１８〜２５重量％の
苛性ソーダ水溶液と塩素との反応が行われる。反応は、
通常、ガス状の塩素を苛性ソーダ水溶液中に吹き込むこ
とによって行われる。塩素の使用量は、通常は苛性ソー
ダ２モルに対して１モルである。In the first step, a reaction between an aqueous solution of caustic soda having a concentration of 18 to 25% by weight and chlorine is carried out. The reaction is
It is usually carried out by blowing gaseous chlorine into an aqueous solution of caustic soda. The amount of chlorine used is usually 1 mol per 2 mol of caustic soda.
【００１１】第１工程においては、食塩含量が１０〜１
２重量％で有効塩素濃度が１３〜１４重量％の次亜塩素
酸ソーダ水溶液が得られる。In the first step, the salt content is 10 to 1
An aqueous sodium hypochlorite solution having an effective chlorine concentration of 13 to 14% by weight at 2% by weight is obtained.
【００１２】本発明における第２工程では、上記の第１
工程で得られた有効塩素濃度が１３〜１４重量％の次亜
塩素酸ソーダ水溶液の存在下に、濃度が４０〜５５重量
％の苛性ソーダ水溶液と塩素との反応が行われる。ここ
で、濃度が４０〜５５重量％の苛性ソーダ水溶液は、電
解槽から得られた苛性ソーダ水溶液を公知の手段、例え
ば、蒸発缶等で濃縮したものが使用される。苛性ソーダ
水溶液の濃度が４０重量％未満の場合、苛性ソーダの濃
度が低すぎるために第２工程において所望する有効塩素
濃度の次亜塩素酸ソーダ水溶液を得ることができない。
逆に苛性ソーダ水溶液の濃度が５５重量％を超える場合
は固結温度が高く取扱いが困難である。In the second step of the present invention, the first step
In the presence of the sodium hypochlorite aqueous solution having an effective chlorine concentration of 13 to 14% by weight obtained in the step, the reaction between the aqueous caustic soda solution having a concentration of 40 to 55% by weight and chlorine is carried out. Here, as the caustic soda aqueous solution having a concentration of 40 to 55% by weight, the caustic soda aqueous solution obtained from the electrolytic cell is concentrated by a known means, for example, an evaporator. If the concentration of the caustic soda aqueous solution is less than 40% by weight, the concentration of the caustic soda is too low to obtain the sodium hypochlorite aqueous solution having the desired effective chlorine concentration in the second step.
On the other hand, when the concentration of the caustic soda aqueous solution exceeds 55% by weight, the solidification temperature is high and the handling is difficult.
【００１３】第１工程で得られた有効塩素濃度が１３〜
１４重量％の次亜塩素酸ソーダ水溶液は、第２工程にお
いて、濃度が４０〜５５重量％の苛性ソーダ水溶液に対
して次のような量で使用される。第１工程で原料として
使用された濃度が１８〜２５重量％の苛性ソーダ水溶液
と第２工程で使用される濃度が４０〜５５重量％の苛性
ソーダ水溶液を混合したときに苛性ソーダの濃度として
３６〜５０重量％となるような範囲で濃度が４０〜５５
重量％の苛性ソーダ水溶液が使用され、これに対して第
１工程で使用された濃度が１８〜２５重量％の苛性ソー
ダ水溶液に対応して生成した次亜塩素酸ソーダ水溶液が
用いられる。通常は、濃度が４０〜５５重量％の苛性ソ
ーダ水溶液１リットルに対して、有効塩素濃度が１３〜
１４重量％の次亜塩素酸ソーダ水溶液は、０．１〜２リ
ットルの範囲で使用される。その他については、第１工
程と同様にして苛性ソーダ水溶液と塩素の反応が行われ
る。The effective chlorine concentration obtained in the first step is 13 to
The 14 wt% sodium hypochlorite aqueous solution is used in the second step in the following amount with respect to the caustic soda aqueous solution having a concentration of 40 to 55 wt%. When the caustic soda aqueous solution having a concentration of 18 to 25% by weight used as a raw material in the first step and the caustic soda aqueous solution having a concentration of 40 to 55% by weight used in the second step are mixed, the caustic soda concentration is 36 to 50% by weight. The concentration is 40-55 within the range of
A wt% sodium hydroxide aqueous solution is used, whereas a sodium hypochlorite aqueous solution produced corresponding to the 18-25 wt% caustic soda aqueous solution used in the first step is used. Usually, the effective chlorine concentration is 13 to 1 liter for 1 liter of a caustic soda aqueous solution having a concentration of 40 to 55% by weight.
A 14% by weight aqueous solution of sodium hypochlorite is used in the range of 0.1 to 2 liters. In other respects, the reaction between the caustic soda aqueous solution and chlorine is performed in the same manner as in the first step.
【００１４】反応中に生成する食塩のうち結晶として析
出するものはろ過等の公知の方法で分離すればよい。第
１工程及び第２工程での反応は、バッチ式、連続式、半
連続式のいずれの方法でもよい。反応温度は２０〜３０
℃の範囲から採用される。Of the salts produced during the reaction, those which are precipitated as crystals may be separated by a known method such as filtration. The reaction in the first step and the second step may be carried out by any of batch method, continuous method and semi-continuous method. Reaction temperature is 20-30
Adopted from the range of ℃.
【００１５】このようにして、食塩含量が４重量％以下
であり、有効塩素濃度が１２〜１３重量％の次亜塩素酸
ソーダ水溶液を得ることができる。Thus, an aqueous solution of sodium hypochlorite having a salt content of 4% by weight or less and an effective chlorine concentration of 12 to 13% by weight can be obtained.
【００１６】[0016]
【効果】本発明の方法によれば、第１工程で製造された
次亜塩素酸ソーダ水溶液を第２工程で使用することによ
り、第２工程の原料である高濃度の苛性ソーダ水溶液の
量を減少させることができる。したがって、本発明の方
法によると、高濃度の苛性ソーダ水溶液と塩素との反応
を低濃度の次亜塩素酸ソーダ水溶液の存在下に行わない
従来の方法に比べて、第１工程において電解槽から取り
出された苛性ソーダ水溶液が濃縮の必要なくそのまま使
用でき、また、第２工程において高濃度の苛性ソーダ水
溶液の使用量を減少させることができる分だけ、苛性ソ
ーダ水溶液の濃縮に必要な水蒸気または電気等のエネル
ギーを節約することができる。しかも、このような方法
を採用することによっても、第２工程で得られる次亜塩
素酸ソーダ水溶液の濃度及び食塩含量は、高濃度の苛性
ソーダ水溶液と塩素との反応を低濃度の次亜塩素酸ソー
ダ水溶液の存在下に行わない従来の方法に比べて何等遜
色ない。[Effect] According to the method of the present invention, by using the sodium hypochlorite aqueous solution produced in the first step in the second step, the amount of the high-concentration caustic soda aqueous solution as the raw material in the second step is reduced. Can be made Therefore, according to the method of the present invention, as compared with the conventional method in which the reaction between the high-concentration aqueous sodium hydroxide solution and chlorine is not carried out in the presence of the low-concentration aqueous sodium hypochlorite solution, it is removed from the electrolytic cell in the first step. The concentrated caustic soda solution can be used as it is without concentration, and the amount of steam or electricity necessary for concentrating the caustic soda solution can be reduced by the amount that can reduce the amount of the highly concentrated caustic soda solution used in the second step. You can save. Moreover, even by adopting such a method, the concentration and salt content of the aqueous solution of sodium hypochlorite obtained in the second step are such that the reaction between the highly concentrated aqueous solution of sodium hydroxide and chlorine has a low concentration of hypochlorous acid. Compared with the conventional method which is not performed in the presence of an aqueous solution of soda, there is no difference.
【００１７】さらに、本発明によれば、反応により生成
する食塩の反応器内への堆積を少なくすることができる
ため、定期的に反応器内の食塩の除去作業を行わなくて
も長期にわたって運転が可能となる。Furthermore, according to the present invention, the amount of salt produced by the reaction can be reduced in the reactor, so that it can be operated for a long period of time without the need to regularly remove the salt in the reactor. Is possible.
【００１８】したがって、本発明の方法は、低食塩含量
の次亜塩素酸ソーダ水溶液を工業的に製造する場合に優
れた効果を発揮するものである。Therefore, the method of the present invention exhibits excellent effects when industrially producing an aqueous solution of sodium hypochlorite having a low salt content.
【００１９】[0019]
【実施例】以下に実施例を掲げるが、本発明はこれらの
実施例に何等制限されるものではない。The following examples are given, but the invention is in no way limited to these examples.
【００２０】実施例１ ２０重量％の苛性ソーダ水溶液と塩素とを、それぞれ
１．５ｍ3／ｈｒ及び１００ｍ3／ｈｒで連続的に反応槽
に供給し、食塩含量が１２重量％で有効塩素濃度が１４
重量％の次亜塩素酸ソーダ水溶液を得た。次いで、３２
重量％の苛性ソーダ水溶液を蒸発缶で濃縮して得た４８
重量％の苛性ソーダ水溶液、塩素、上記で得られた次亜
塩素酸ソーダ水溶液及び軟水を、それぞれ０．０８４ｍ
3／ｈｒ、１７ｍ3／ｈｒ、０．０５ｍ3／ｈｒ及び１６
リットル／ｈｒで連続的に反応槽に供給し、１４時間反
応を行った。その結果、食塩含量３．５重量％で有効塩
素濃度が１２．５重量％の次亜塩素酸ソーダ水溶液を約
７トン得た。[0020] a sodium hydroxide aqueous solution and chlorine in Example 1 20 wt%, was continuously fed into the reaction vessel, respectively 1.5 m 3 / hr and 100 m 3 / hr, salt content is effective chlorine concentration of 12 wt% 14
A wt% sodium hypochlorite aqueous solution was obtained. Then 32
Obtained by concentrating an aqueous solution of caustic soda at a weight percentage of 48 in an evaporator.
0.08 m of each of the aqueous solution of caustic soda, chlorine, the aqueous solution of sodium hypochlorite obtained above, and the soft water are added.
3 / hr, 17m 3 /hr,0.05m 3 / hr and 16
It was continuously supplied to the reaction tank at a rate of 1 liter / hr and reacted for 14 hours. As a result, about 7 tons of an aqueous solution of sodium hypochlorite having a salt content of 3.5% by weight and an effective chlorine concentration of 12.5% by weight was obtained.
【００２１】このときの３２重量％の苛性ソーダ水溶液
の蒸発缶による濃縮に要した水蒸気量は、生成した次亜
塩素酸ソーダ水溶液１トン当り７４ｋｇであった。At this time, the amount of water vapor required for concentrating the 32 wt% aqueous solution of caustic soda by an evaporator was 74 kg per ton of the produced aqueous solution of sodium hypochlorite.
【００２２】上記の操作をさらに２回繰返したが、反応
槽内への食塩の堆積は少なく、引続き運転が可能であっ
た。The above operation was repeated twice more, but the accumulation of salt in the reaction vessel was small and the operation could be continued.
【００２３】実施例２ １８重量％の苛性ソーダ水溶液と塩素とを、それぞれ
１．６ｍ3／ｈｒ及び１００ｍ3／ｈｒで連続的に反応槽
に供給し、食塩含量が１１重量％で有効塩素濃度が１
３．５重量％の次亜塩素酸ソーダ水溶液を得た。次い
で、３２重量％の苛性ソーダ水溶液を蒸発缶で濃縮して
得た４８重量％の苛性ソーダ水溶液、塩素、上記で得ら
れた次亜塩素酸ソーダ水溶液及び軟水を、それぞれ０．
１ｍ3／ｈｒ、２０ｍ3／ｈｒ、 ０．０５ｍ3／ｈｒ及び
２２リットル／ｈｒで連続的に反応槽に供給し、１２時
間反応を行った。その結果、食塩含量３．５重量％で有
効塩素濃度が１２．５重量％の次亜塩素酸ソーダ水溶液
を約７トン得た。[0023] a sodium hydroxide aqueous solution and chlorine in the Example 2 18 wt%, respectively fed continuously to a reaction vessel at 1.6 m 3 / hr and 100 m 3 / hr, salt content is effective chlorine concentration of 11 wt% 1
A 3.5% by weight aqueous solution of sodium hypochlorite was obtained. Then, a 48 wt% caustic soda aqueous solution obtained by concentrating the 32 wt% caustic soda aqueous solution in an evaporator, chlorine, the sodium hypochlorite aqueous solution obtained above, and soft water were respectively added.
1m 3 / hr, 20m 3 / hr, and continuously fed to the reactor at 0.05 m 3 / hr and 22 l / hr, respectively, which are also subjected to 12 hours. As a result, about 7 tons of an aqueous solution of sodium hypochlorite having a salt content of 3.5% by weight and an effective chlorine concentration of 12.5% by weight was obtained.
【００２４】このときの３２重量％の苛性ソーダ水溶液
の蒸発缶による濃縮に要した水蒸気量は、生成した次亜
塩素酸ソーダ水溶液１トン当り７７ｋｇであった。At this time, the amount of steam required for concentrating the 32 wt% aqueous solution of caustic soda by the evaporator was 77 kg per ton of the produced aqueous solution of sodium hypochlorite.
【００２５】上記の操作をさらに２回繰返したが、反応
槽内への食塩の堆積は少なく、引続き運転が可能であっ
た。The above operation was repeated twice more, but the accumulation of salt in the reaction vessel was small and the operation could be continued.
【００２６】比較例１ ３２重量％の苛性ソーダ水溶液を蒸発缶で濃縮して得た
４８重量％の苛性ソーダ水溶液、塩素及び軟水を、それ
ぞれ０．１ｍ3／ｈｒ、２０ｍ3／ｈｒ及び４６リットル
／ｈｒで連続的に反応槽に供給し、１４時間反応を行っ
た。その結果、食塩含量３．５重量％で有効塩素濃度が
１２．５重量％の次亜塩素酸ソーダ水溶液を約７トン得
た。Comparative Example 1 A 48 wt% caustic soda aqueous solution obtained by concentrating a 32 wt% caustic soda aqueous solution in an evaporator, chlorine and soft water were added to 0.1 m 3 / hr, 20 m 3 / hr and 46 liters / hr, respectively. Was continuously supplied to the reaction tank and the reaction was performed for 14 hours. As a result, about 7 tons of an aqueous solution of sodium hypochlorite having a salt content of 3.5% by weight and an effective chlorine concentration of 12.5% by weight was obtained.
【００２７】このときの３２重量％の苛性ソーダ水溶液
の蒸発缶による濃縮に要した水蒸気量は、生成した次亜
塩素酸ソーダ水溶液１トン当り８８ｋｇであった。At this time, the amount of water vapor required for concentrating the 32 wt% aqueous solution of caustic soda with the evaporator was 88 kg per ton of the produced aqueous solution of sodium hypochlorite.
【００２８】上記の操作をさらに１回繰返したところ、
反応槽内に食塩が堆積して配管の閉塞のおそれがあるた
めに運転を停止せざるを得なかった。When the above operation was repeated once more,
The operation had to be stopped because there was a risk that salt would accumulate in the reaction tank and block the piping.
Claims (1)
液と塩素とを反応させて次亜塩素酸ソーダ水溶液を製造
する第１工程と、該第１工程で得られた次亜塩素酸ソー
ダ水溶液の存在下に濃度が４０〜５５重量％の苛性ソー
ダ水溶液と塩素とを反応させて次亜塩素酸ソーダ水溶液
を製造する第２工程とよりなることを特徴とする次亜塩
素酸ソーダ水溶液の製造方法。1. A first step of producing an aqueous solution of sodium hypochlorite by reacting an aqueous solution of sodium hydroxide with a concentration of 18 to 25% by weight with chlorine, and an aqueous solution of sodium hypochlorite obtained in the first step. And a second step of producing an aqueous solution of sodium hypochlorite by reacting an aqueous solution of caustic soda having a concentration of 40 to 55% by weight with chlorine in the presence of an aqueous solution of sodium hypochlorite. ..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3305148A JP2742164B2 (en) | 1991-11-21 | 1991-11-21 | Method for producing aqueous sodium hypochlorite solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3305148A JP2742164B2 (en) | 1991-11-21 | 1991-11-21 | Method for producing aqueous sodium hypochlorite solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05139701A true JPH05139701A (en) | 1993-06-08 |
| JP2742164B2 JP2742164B2 (en) | 1998-04-22 |
Family
ID=17941656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3305148A Expired - Fee Related JP2742164B2 (en) | 1991-11-21 | 1991-11-21 | Method for producing aqueous sodium hypochlorite solution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2742164B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013065797A1 (en) * | 2011-11-04 | 2013-05-10 | クロリンエンジニアズ株式会社 | Method for producing hypochlorite |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4947292A (en) * | 1972-08-31 | 1974-05-07 | ||
| JPS5618522A (en) * | 1979-07-25 | 1981-02-21 | Toppan Printing Co Ltd | Production of plastic fish bank |
| JPS5954605A (en) * | 1982-08-24 | 1984-03-29 | ペ・セ・ユ−・カ・プロデユイ・シミク・ユ−ジヌ・ク−ルマン | Continuous manufacture of high concentration sodium hypochlorite solution |
| JPS6081004A (en) * | 1983-10-13 | 1985-05-09 | Asahi Chem Ind Co Ltd | Manufacture of high-concentration aqueous solution of sodium hypochlorite |
-
1991
- 1991-11-21 JP JP3305148A patent/JP2742164B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4947292A (en) * | 1972-08-31 | 1974-05-07 | ||
| JPS5618522A (en) * | 1979-07-25 | 1981-02-21 | Toppan Printing Co Ltd | Production of plastic fish bank |
| JPS5954605A (en) * | 1982-08-24 | 1984-03-29 | ペ・セ・ユ−・カ・プロデユイ・シミク・ユ−ジヌ・ク−ルマン | Continuous manufacture of high concentration sodium hypochlorite solution |
| JPS6081004A (en) * | 1983-10-13 | 1985-05-09 | Asahi Chem Ind Co Ltd | Manufacture of high-concentration aqueous solution of sodium hypochlorite |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013065797A1 (en) * | 2011-11-04 | 2013-05-10 | クロリンエンジニアズ株式会社 | Method for producing hypochlorite |
| JP2013096001A (en) * | 2011-11-04 | 2013-05-20 | Chlorine Engineers Corp Ltd | Method for producing hypochlorite |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2742164B2 (en) | 1998-04-22 |
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