JPH01258749A - Regenerating agent for cation exchange resin and regenerating process using said regenerating agent - Google Patents
Regenerating agent for cation exchange resin and regenerating process using said regenerating agentInfo
- Publication number
- JPH01258749A JPH01258749A JP63085468A JP8546888A JPH01258749A JP H01258749 A JPH01258749 A JP H01258749A JP 63085468 A JP63085468 A JP 63085468A JP 8546888 A JP8546888 A JP 8546888A JP H01258749 A JPH01258749 A JP H01258749A
- Authority
- JP
- Japan
- Prior art keywords
- cation exchange
- regenerating
- regeneration
- exchange resin
- liquid
- 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
- 239000003729 cation exchange resin Substances 0.000 title claims abstract description 41
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 58
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 239000002253 acid Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000007864 aqueous solution Substances 0.000 claims description 18
- 230000008929 regeneration Effects 0.000 abstract description 38
- 238000011069 regeneration method Methods 0.000 abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000005406 washing Methods 0.000 abstract description 8
- 239000011347 resin Substances 0.000 abstract description 7
- 229920005989 resin Polymers 0.000 abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 4
- 239000001257 hydrogen Substances 0.000 abstract description 4
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 17
- 238000005341 cation exchange Methods 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 11
- 229910001415 sodium ion Inorganic materials 0.000 description 11
- 229940023913 cation exchange resins Drugs 0.000 description 9
- 150000001768 cations Chemical class 0.000 description 9
- 239000012492 regenerant Substances 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 238000005342 ion exchange Methods 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- -1 hydrogen ions Chemical class 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000002242 deionisation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は陽イオン交換樹脂用再生剤、及びこの再生剤を
使用する陽イオン交換樹脂の再生方法に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a regenerant for cation exchange resins and a method for regenerating cation exchange resins using this regenerant.
「従来の技術及び発明が解決しようとする課題」陽イオ
ン交換樹脂は上水、工業用水、各種廃水及び化学工場な
どで取扱われる種々の溶液（以下これ等を総称して溶液
等と記す）に含まれる、少量ないし微量の各種陽イオン
の除去に広く使用されている。"Prior art and problems to be solved by the invention" Cation exchange resins are used in various solutions (hereinafter collectively referred to as solutions, etc.) handled in tap water, industrial water, various wastewaters, and chemical factories. It is widely used to remove small to trace amounts of various cations contained.
而して、陽イオン交換樹脂を使用しての溶液等からの陽
イオンの除去は、衆知の如く陽イオンを含む溶液等（被
処理液）を、陽イオン交換樹脂を充填したカラム（陽イ
オン交換塔）に通液する方法で実施されるが、この通液
により被処理液中の陽イオンと陽イオン交換樹脂中の水
素イオンとの交換によって除去される。As is well known, the removal of cations from a solution using a cation exchange resin is a process in which a solution containing cations (liquid to be treated) is transferred to a column filled with a cation exchange resin (cation exchange resin). This is carried out by passing the liquid through an exchange column (exchange tower), and by passing the liquid through, the cations in the liquid to be treated are exchanged with the hydrogen ions in the cation exchange resin, thereby removing them.
したがって、このイオン交換能力は被処理液の通液の経
過と共に次第に低下し、遂にはイオン交換しなくなるの
で、適当な時点で陽イオン交換樹脂を再生しなければな
らない。Therefore, this ion exchange capacity gradually decreases as the liquid to be treated passes through the resin, and eventually ions are no longer exchanged, so the cation exchange resin must be regenerated at an appropriate time.
尚、イオン交換能力の低下の程度は、陽イオン交換塔出
口における被処理液中の陽イオンの濃度の測定によって
知ることができる。即ち、イオン交換能力が低下するに
したがい、該陽イオン交換塔出口の被処理液中の陽イオ
ンの濃度が上昇し、遂には陽イオン交換塔入口の被処理
液中の濃度と殆ど等しくなる。The degree of decrease in ion exchange capacity can be determined by measuring the concentration of cations in the liquid to be treated at the outlet of the cation exchange tower. That is, as the ion exchange capacity decreases, the concentration of cations in the liquid to be treated at the outlet of the cation exchange column increases and eventually becomes almost equal to the concentration in the liquid to be treated at the inlet of the cation exchange column.
陽イオン交換樹脂の再生は通常次の様なサイクルで行わ
れている。即ち被処理液の通液停止、被処理液の抜液、
再生前の洗浄、洗浄水の抜液、再生、再生液の抜液、再
生後の洗浄、洗浄水の抜液、被処理液の通液の順序に従
って行われる。Regeneration of cation exchange resins is usually carried out in the following cycle. In other words, stopping the flow of the liquid to be treated, draining the liquid to be treated,
The cleaning is performed in the following order: cleaning before regeneration, draining of the cleaning water, regeneration, draining of the regenerated liquid, cleaning after regeneration, draining of the cleaning water, and passage of the liquid to be treated.
再生前の洗浄は、陽イオン交換樹脂に含浸している被処
理液を回収するのが目的で、通常水を陽イオン交換塔へ
水張・抜水する操作を数回繰り返し、被処理液を回収後
、必要に応じ、更に水洗を続行（水洗液は廃棄）する方
法で行われる。従って、被処理液が上水や工業用水であ
る場合には、当然のことながら、上記再生前の洗浄は必
要はない。The purpose of cleaning before regeneration is to recover the liquid to be treated that is impregnated in the cation exchange resin, and the process of filling and draining normal water into the cation exchange column is repeated several times to remove the liquid to be treated. After collection, if necessary, washing with water is continued (the washing liquid is discarded). Therefore, when the liquid to be treated is tap water or industrial water, the above-mentioned cleaning before regeneration is, of course, unnecessary.
再生とは、水素イオンと交換された陽イオン交換樹脂中
の陽イオンを再び水素イオンに戻す（Ｈ型の陽イオン交
換樹脂にする）ことであり、これは通常酸性水溶液を再
生剤として陽イオン交換塔に通液する方法で実施される
。そして、この再生剤は通常濃度が５〜２０重置％の塩
酸、硫酸等の鉱酸の水溶液が使用されている。Regeneration is to return the cations in the cation exchange resin that have been exchanged with hydrogen ions back to hydrogen ions (to make an H-type cation exchange resin), and this is usually done by using an acidic aqueous solution as a regenerating agent. This is carried out by passing the liquid through an exchange tower. As the regenerating agent, an aqueous solution of a mineral acid such as hydrochloric acid or sulfuric acid having a concentration of 5 to 20% by weight is usually used.
上記再生において、再生剤の通液は被処理液の通液と同
一方向、つまり並流で行う場合と、逆方向、つまり向流
で行う場合があるが、再生後における被処理液の通液開
始の際の陽イオンの漏洩を防止するためには、向流で再
生を行うのが好ましい。In the above regeneration, the regenerant is passed in the same direction as the liquid to be treated, that is, in parallel flow, or in the opposite direction, that is, in countercurrent. To prevent leakage of cations during start-up, regeneration is preferably carried out in countercurrent.
しかし何れにしても、陽イオン交換樹脂を完全にＨ型に
まで再生するためには、大量の再生剤及び長時間の再生
時間を必要とするので、不完全な再生でもって再生完了
とするのが通常である。しかし、このように再生が不完
全であるということは、その分だけ再生頻度が増加する
。このような再生頻度の増加は、再生に要する費用や労
力の増加となるのみならず、陽イオン樹脂の粉化による
損失増加を招くという問題もある。However, in any case, in order to completely regenerate the cation exchange resin to H-type, a large amount of regenerant and a long regeneration time are required, so incomplete regeneration is not considered complete. is normal. However, this incomplete regeneration means that the regeneration frequency increases accordingly. Such an increase in regeneration frequency not only increases the cost and labor required for regeneration, but also causes the problem of increased loss due to pulverization of the cationic resin.
「課題を解決するための手段」
本発明者等は上記状況に鑑み、陽イオン交換樹脂の再生
率を向上させることを目的として鋭意検討を重ねた結果
、塩酸と硫酸との混酸水溶液を陽イオン交換樹脂の再生
剤として使用すれば、従来の再生剤である塩酸、硫酸等
の単独水溶液よりも陽イオン交換樹脂の再生率が向上す
ることを見出し、本発明を完成するに至ったものである
。"Means for Solving the Problems" In view of the above circumstances, the inventors of the present invention have conducted extensive studies with the aim of improving the regeneration rate of cation exchange resins, and as a result, the present inventors have found that a mixed acid aqueous solution of hydrochloric acid and sulfuric acid is used as a cation exchange resin. It was discovered that when used as a regenerating agent for exchange resins, the regeneration rate of cation exchange resins is improved compared to single aqueous solutions of conventional regenerants such as hydrochloric acid and sulfuric acid, which led to the completion of the present invention. .
即ち、本発明の一つは塩酸と硫酸の混酸水溶液からなる
ことを特徴とする陽イオン交換樹脂用再生剤であり、本
発明の他の一つは上記混酸水溶液を再生剤として使用す
ることを特徴とする陽イオン交換樹脂の再生方法である
。That is, one aspect of the present invention is a regenerating agent for cation exchange resin characterized by comprising an aqueous mixed acid solution of hydrochloric acid and sulfuric acid, and another aspect of the present invention is a regenerating agent characterized in that the aqueous mixed acid solution described above is used as a regenerating agent. This is a characteristic method for regenerating cation exchange resins.
「発明の詳細な開示」 以下、本発明を更に詳細に説明する。"Detailed Disclosure of the Invention" The present invention will be explained in more detail below.
本発明の陽イオン交換樹脂用再生剤は、前記の通り塩酸
と硫酸との混酸水溶液でなければならない。塩酸と硫酸
の混合割合は特に限定はなく、何れの混合割合でも塩酸
または硫酸単独の水溶液より再生率は向上するが、その
中でも、混酸水溶液中の全水素イオン中に占める硫酸が
もたらす水素イオンの割合が５〜４０％（塩酸１モルに
対し硫酸が約０．０２３〜０．３２７モル）、更に好ま
しくは１０〜２０％（塩酸１モルに対し硫酸が約０．０
５４〜０．１２２モル）である。The regenerant for cation exchange resins of the present invention must be an aqueous mixed acid solution of hydrochloric acid and sulfuric acid, as described above. The mixing ratio of hydrochloric acid and sulfuric acid is not particularly limited, and the regeneration rate is improved compared to an aqueous solution of hydrochloric acid or sulfuric acid alone at any mixing ratio. The ratio is 5 to 40% (about 0.023 to 0.327 mol of sulfuric acid to 1 mol of hydrochloric acid), more preferably 10 to 20% (about 0.0 mol of sulfuric acid to 1 mol of hydrochloric acid).
54 to 0.122 mol).
上記の混酸水溶液の濃度は、本発明では従来の塩酸単独
または硫酸単独の水溶液の場合と同様に、塩酸と硫酸を
合計した濃度が５〜２０重量％の水溶液として使用され
る。In the present invention, the above-mentioned mixed acid aqueous solution is used as an aqueous solution in which the total concentration of hydrochloric acid and sulfuric acid is 5 to 20% by weight, similar to the conventional aqueous solution of hydrochloric acid alone or sulfuric acid alone.
また、使用される塩酸及び硫酸は特に高純度である必要
はなく、通常市販の工業用のものが好適に使用される。Furthermore, the hydrochloric acid and sulfuric acid used do not need to be of particularly high purity, and commercially available industrial ones are preferably used.
本発明では上記の塩酸と硫酸の混酸水溶液からなる再生
剤を用いて、陽イオン交換樹脂の再生を行うが、再生方
法は、従来の再生剤である塩酸、硫酸等の単独水溶液の
代わりに上記の本発明の再生剤を使用する以外は、従来
公知の方法と全（同様な方法で実施される。In the present invention, the cation exchange resin is regenerated using a regenerating agent consisting of the above-mentioned mixed acid aqueous solution of hydrochloric acid and sulfuric acid. The method is carried out in the same manner as the conventionally known method except for using the regenerating agent of the present invention.
即ち、再生操作は、被処理液の通液停止、被処理液の抜
液、再生前の洗浄、洗浄水の抜液、再生、再生液の抜液
、再生後の洗浄、洗浄水の抜液、被処理液の通液の順序
に従って行われる。In other words, the regeneration operations include stopping the flow of the liquid to be treated, draining the liquid to be treated, cleaning before regeneration, draining the cleaning water, regeneration, draining the regenerated liquid, cleaning after regeneration, and draining the cleaning water. , and are carried out in accordance with the order of passage of the liquid to be treated.
尚、上記再生操作において、被処理液が水に可溶性で沸
点が水より低い有機溶媒を含む溶液である場合は、上記
再生操作の中の、再生前の洗浄、洗浄水の抜液の代わり
に、本発明者等が先に提案した、陽イオン交換樹脂層へ
水蒸気を吹き込むことにより陽イオン交換樹脂に含浸し
ている被処理液を水と置換させる方法（特開昭６２−４
２７４８号公報記載の方法）を適用することもできる。In addition, in the above regeneration operation, if the liquid to be treated is a solution containing an organic solvent that is soluble in water and has a boiling point lower than water, instead of washing before regeneration and draining the washing water in the above regeneration operation, , a method previously proposed by the present inventors in which the liquid to be treated impregnated in the cation exchange resin is replaced with water by blowing water vapor into the cation exchange resin layer (Japanese Patent Laid-Open No. 62-4
The method described in Japanese Patent No. 2748) can also be applied.
（実施例）
以下実施例により本発明をより具体的に説明する。尚、
以下において％は重量％を意味する。(Example) The present invention will be explained in more detail with reference to Examples below. still,
In the following, % means % by weight.
実施例１
ｈｏｓｆｉ度５４．１％の湿式燐酸液にイソプロピルア
ルコールを加え、湿式燐酸液中の遊離燐酸分を抽出して
第１表に示す組成の抽出液を得た。Example 1 Isopropyl alcohol was added to a wet phosphoric acid solution with a hosfi degree of 54.1% to extract the free phosphoric acid content in the wet phosphoric acid solution to obtain an extract having the composition shown in Table 1.
陽イオン交換樹脂レバチッ）ＳＰ−１１２（西独バイエ
ル社製）を充填した塔径１．５ｍ、陽イオン交換塔（陽
イオン交換樹脂充填容量８ ｍりに 、第１表に示す組
成の抽出液を２０ａ３への流量でアップフローにて通液
し、含有するＮａイオンを脱イオン処理した。 １２時
間通液したところでイオン交換処理能力が低下し、陽イ
オン交換塔出口のＮａイオンの含有量がｏ、ｏｏｓ％に
上昇したので抽出液の通液を停止し、陽イオン交換塔内
の抽出液を抽出液タンクへ抜液した６
抽出液を抜液後、陽イオン交換塔の樹脂層まで上水を水
張・抜液する操作を２回行い、陽イオン交換樹脂に含浸
している抽出液を回収した。更にアップフローで上水を
１０＋ｓ３／ｈの流量で３時間通水し、陽イオン交換樹
脂を充分洗浄した。The extract having the composition shown in Table 1 was added to a cation exchange tower (cation exchange resin filling capacity: 8 m) with a diameter of 1.5 m filled with cation exchange resin SP-112 (manufactured by Bayer AG, West Germany). The solution was passed upflow at a flow rate of 20a3 to deionize the contained Na ions.After passing the solution for 12 hours, the ion exchange processing capacity decreased, and the content of Na ions at the outlet of the cation exchange column decreased to , oos%, so the flow of the extract was stopped and the extract in the cation exchange tower was drained to the extract tank.6 After draining the extract, water was pumped up to the resin layer of the cation exchange tower. The extraction liquid impregnated into the cation exchange resin was recovered by filling and draining twice.Furthermore, clean water was passed through the cation exchange resin at a flow rate of 10+s3/h for 3 hours to exchange cations. The resin was thoroughly washed.
次いで、予め用意された、塩酸が２１．ＯＯｋｇ−ｍｏ
ｌ、硫酸が３．１０ｋｇ−ｏｒａｌの塩酸と硫酸からな
る再生液１６ｍ’を、ダウンフローにて２０ｍ’／ｈの
速度で４８分間通液し、陽イオン交換樹脂の再生を行っ
た。再生後は再生剤を抜液したのち陽イオン交換樹脂は
上水で充分洗浄した。Next, previously prepared hydrochloric acid was added to 21. OOkg-mo
16 m' of a regenerating solution consisting of hydrochloric acid and sulfuric acid containing 3.10 kg/oral of sulfuric acid was passed downflow at a rate of 20 m'/h for 48 minutes to regenerate the cation exchange resin. After regeneration, the regenerant was drained and the cation exchange resin was thoroughly washed with tap water.
かくして再生された陽イオン交換塔に、再度第１表に示
す組成の抽出液を２０ｍ＋３／ｈの流量でアップフロー
にて通液してＮａイオンを脱イオンした。The extract having the composition shown in Table 1 was again passed through the thus regenerated cation exchange column at a flow rate of 20 m+3/h in an upflow manner to deionize Na ions.
１３．９時間通液したところで陽イオン交換塔出口の抽
出液中のＮａイオンの含有量がｏ、ｏｏｓ％に上昇した
ので抽出液の通液をストップした。尚、この間の抽出液
の通液量は２７８ｍ”、 Ｎａイオンの脱イオン量は１
１．９５ｋｇ−５ｏｌであった。After passing through the solution for 13.9 hours, the content of Na ions in the extract at the outlet of the cation exchange column rose to 0.00%, so the passing of the extract was stopped. During this time, the amount of extract liquid passed through was 278 m'', and the amount of deionized Na ions was 1.
It was 1.95 kg-5 ol.
実施例２〜３
再生液の組成を第２表に示す濃度に変更した以外は、実
施例１と全く同様にして第１表に示す組成の抽出液中の
Ｎａイオンの脱イオン及び陽イオン交換樹脂の再生を行
った。Examples 2 to 3 Deionization and cation exchange of Na ions in the extract having the composition shown in Table 1 was carried out in exactly the same manner as in Example 1, except that the composition of the regeneration liquid was changed to the concentration shown in Table 2. Resin was regenerated.
陽イオン交換樹脂再生後の脱イオンにおいて、陽イオン
交換塔出口の抽出液中のＮａイオンの含有量が実施例１
と同じ０．００５％に上昇したところで抽出液の通液を
停止した。この間の抽出液の通液量及びＮａイオンの脱
イオン量に第２表に示す通りであった。In the deionization after regeneration of the cation exchange resin, the content of Na ions in the extract at the outlet of the cation exchange tower was determined as in Example 1.
The passage of the extract solution was stopped when it rose to the same 0.005%. During this period, the amount of the extract solution passed through and the amount of deionized Na ions were as shown in Table 2.
比較例１〜２
再生液を従来公知の塩酸及び硫酸の単独水溶液に変更（
水素イオン濃度は実施例１と同じ）し、第２表に示す濃
度とした以外は、実施例１と全く同様な方法で、第１表
に示す組成の抽出液中のＮａイオンの脱イオン及び陽イ
オン交換樹脂の再生を行った。Comparative Examples 1-2 Changing the regeneration liquid to a conventionally known single aqueous solution of hydrochloric acid and sulfuric acid (
The hydrogen ion concentration was the same as in Example 1), and the Na ions in the extract having the composition shown in Table 1 were deionized and The cation exchange resin was regenerated.
陽イオン交換樹脂再生後の抽出液の脱イオンにおいて、
陽イオン交換塔出口の抽出液中のＮａイオンの含有量が
実施例１と同じｏ、ｏｏｓ％に上昇とたところで抽出液
の通液を停止した。この間の抽出液の通液量及びＮａイ
オンの脱イオン量は第２表に示す通りであった。In deionizing the extract after cation exchange resin regeneration,
When the content of Na ions in the extract at the outlet of the cation exchange column rose to the same o, oos% as in Example 1, the flow of the extract was stopped. During this period, the amount of the extract solution passed through and the amount of deionized Na ions were as shown in Table 2.
「発明の効果」
以上詳細に説明した如く、本発明は陽イオン交換樹脂の
再生剤として塩酸と硫酸の混酸水溶液を使用するという
ものであって、これによって実施例及び比較例が示す如
く、従来公知の塩酸や硫酸等の単独の水溶液を再生剤と
して使用する方法に比べ、陽イオン交換樹脂の再生率を
向上させることを可能としたものである。"Effects of the Invention" As explained in detail above, the present invention uses a mixed acid aqueous solution of hydrochloric acid and sulfuric acid as a regenerating agent for cation exchange resin, and as shown in the Examples and Comparative Examples, this invention This method makes it possible to improve the regeneration rate of cation exchange resins compared to the known method of using a single aqueous solution such as hydrochloric acid or sulfuric acid as a regenerant.
その結果、従来の方法に比べ再生頻度を少なくすること
が可能となり、再生に要する費用及び労力の低減が達成
できるのみならず、陽イオン交換樹脂の粉化による損失
も抑制することができる。As a result, it is possible to reduce the frequency of regeneration compared to conventional methods, and not only can the cost and labor required for regeneration be reduced, but also loss due to pulverization of the cation exchange resin can be suppressed.
また、従来技術では再生剤としての塩酸と硫酸とでは、
比較例が示す如く塩酸の方が再生率は高いが一面塩酸の
方が高価である。ところが本発明では塩酸と硫酸の混酸
水溶液を再生剤として使用するものであるので、塩酸単
独の水溶液を使用するよりも硫酸を併用する分だけ廉価
である。In addition, in the conventional technology, hydrochloric acid and sulfuric acid as regenerants
As shown in the comparative example, although hydrochloric acid has a higher regeneration rate, it is also more expensive. However, in the present invention, since a mixed acid aqueous solution of hydrochloric acid and sulfuric acid is used as a regenerating agent, it is cheaper than using an aqueous solution of hydrochloric acid alone by the amount corresponding to the combination of sulfuric acid.
更にまた、本発明は以上のように、再生剤を従来の塩酸
又は硫酸等の鉱酸の水溶液から塩酸と硫酸との混酸水溶
液に変更するものであるので、従来の方法を本発明の方
法に変更する場合に、装置的に変更するものは特にない
という優れた経済的効果もあるのである。Furthermore, as described above, the present invention changes the regenerating agent from the conventional aqueous solution of mineral acids such as hydrochloric acid or sulfuric acid to a mixed acid aqueous solution of hydrochloric acid and sulfuric acid, so the conventional method can be replaced with the method of the present invention. There is also an excellent economical effect in that there is no need to change anything in terms of equipment.
特許出願人 三井東圧化学株式会社Patent applicant Mitsui Toatsu Chemical Co., Ltd.
Claims (2)
る陽イオン交換樹脂用再生液。(1) A regenerating liquid for cation exchange resin, which is characterized by being composed of a mixed acid aqueous solution of hydrochloric acid and sulfuric acid.
として使用することを特徴とする陽イオン交換樹脂の再
生方法。(2) A method for regenerating a cation exchange resin, which comprises using the mixed acid aqueous solution according to claim 1 as a regenerating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085468A JPH01258749A (en) | 1988-04-08 | 1988-04-08 | Regenerating agent for cation exchange resin and regenerating process using said regenerating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085468A JPH01258749A (en) | 1988-04-08 | 1988-04-08 | Regenerating agent for cation exchange resin and regenerating process using said regenerating agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01258749A true JPH01258749A (en) | 1989-10-16 |
| JPH0511494B2 JPH0511494B2 (en) | 1993-02-15 |
Family
ID=13859724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63085468A Granted JPH01258749A (en) | 1988-04-08 | 1988-04-08 | Regenerating agent for cation exchange resin and regenerating process using said regenerating agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01258749A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08503983A (en) * | 1992-11-25 | 1996-04-30 | ヘキスト、セラニーズ、コーポレーション | Reduction of metal ions in bottom antireflective coatings for photoresists |
| US6827858B2 (en) * | 2000-05-17 | 2004-12-07 | Basf Aktiengesellschaft | Method for separating alkali metal ions from alkoxylates |
| JP2009279561A (en) * | 2008-05-26 | 2009-12-03 | Kurita Water Ind Ltd | Treatment method and treatment apparatus for water soluble resin component-containing alkaline waste liquid |
| JP2010036130A (en) * | 2008-08-06 | 2010-02-18 | Kurita Water Ind Ltd | Method and apparatus for recovering water-soluble organic solvent having amino group |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57149813A (en) * | 1981-03-06 | 1982-09-16 | Mitsui Toatsu Chem Inc | Treatment of phosphoric acid extracted solution by ion exchange |
-
1988
- 1988-04-08 JP JP63085468A patent/JPH01258749A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57149813A (en) * | 1981-03-06 | 1982-09-16 | Mitsui Toatsu Chem Inc | Treatment of phosphoric acid extracted solution by ion exchange |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08503983A (en) * | 1992-11-25 | 1996-04-30 | ヘキスト、セラニーズ、コーポレーション | Reduction of metal ions in bottom antireflective coatings for photoresists |
| US6827858B2 (en) * | 2000-05-17 | 2004-12-07 | Basf Aktiengesellschaft | Method for separating alkali metal ions from alkoxylates |
| JP2009279561A (en) * | 2008-05-26 | 2009-12-03 | Kurita Water Ind Ltd | Treatment method and treatment apparatus for water soluble resin component-containing alkaline waste liquid |
| JP2010036130A (en) * | 2008-08-06 | 2010-02-18 | Kurita Water Ind Ltd | Method and apparatus for recovering water-soluble organic solvent having amino group |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0511494B2 (en) | 1993-02-15 |
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