JPH0138554B2 - - Google Patents
Info
- Publication number
- JPH0138554B2 JPH0138554B2 JP9469180A JP9469180A JPH0138554B2 JP H0138554 B2 JPH0138554 B2 JP H0138554B2 JP 9469180 A JP9469180 A JP 9469180A JP 9469180 A JP9469180 A JP 9469180A JP H0138554 B2 JPH0138554 B2 JP H0138554B2
- Authority
- JP
- Japan
- Prior art keywords
- exchange resin
- cation exchange
- acidic cation
- resins
- 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
Links
- 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 claims description 20
- 239000003729 cation exchange resin Substances 0.000 claims description 20
- 230000002378 acidificating effect Effects 0.000 claims description 16
- 239000005518 polymer electrolyte Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000003957 anion exchange resin Substances 0.000 claims description 11
- 229920006317 cationic polymer Polymers 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 238000005342 ion exchange Methods 0.000 claims description 6
- 229940023913 cation exchange resins Drugs 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 28
- 239000011347 resin Substances 0.000 description 20
- 229920005989 resin Polymers 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- -1 iron ions Chemical class 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 125000002091 cationic group Chemical group 0.000 description 4
- 238000005202 decontamination Methods 0.000 description 4
- 230000003588 decontaminative effect Effects 0.000 description 4
- 239000003456 ion exchange resin Substances 0.000 description 4
- 229920003303 ion-exchange polymer Polymers 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229920000867 polyelectrolyte Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 125000003010 ionic group Chemical group 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 2
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 150000003512 tertiary amines Chemical group 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 101100149536 Caenorhabditis elegans skn-1 gene Proteins 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical class [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 101100083855 Rattus norvegicus Pou2f3 gene Proteins 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229920001448 anionic polyelectrolyte Polymers 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910001956 copper hydroxide Inorganic materials 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
Description
【発明の詳細な説明】
本発明はボイラー復水の処理方法に関するもの
である。特に本発明はボイラー復水中のコロイド
状金属を効率よく除去する方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating boiler condensate. In particular, the present invention relates to a method for efficiently removing colloidal metals from boiler condensate.
ボイラー、特に発電用ボイラーでは、ボイラー
給水の大部分は発生蒸気を凝縮させたいわゆるボ
イラー復水であり、不足分を外部から供給される
補給水でおぎなつている。これらのボイラー給水
は、ボイラーに供給する前に、一般に粒状の強酸
性陽イオン交換樹脂と強塩基性陰イオン交換樹脂
からなるいわゆる混合床イオン交換装置で処理し
て、不純物を除去する。この処理により、イオン
状の不純物、例えばナトリウムイオン、カルシウ
ムイオン、マグネシウムイオン、鉄イオンやクロ
ルイオン、硫酸イオン等は殆ど完全に除去でき、
これらのイオン状不純物質の混入によるボイラー
及びその付属機器の障害は殆ど防止することがで
きるといわれている。 In boilers, especially power generation boilers, most of the boiler feed water is so-called boiler condensate water, which is obtained by condensing generated steam, and the shortage is made up with make-up water supplied from outside. Before being supplied to the boiler, these boiler feedwaters are generally treated in a so-called mixed bed ion exchange device consisting of granular strongly acidic cation exchange resins and strongly basic anion exchange resins to remove impurities. Through this treatment, ionic impurities such as sodium ions, calcium ions, magnesium ions, iron ions, chloride ions, sulfate ions, etc. can be almost completely removed.
It is said that most of the damage to boilers and their auxiliary equipment caused by the contamination of these ionic impurities can be prevented.
ボイラーおよびボイラー復水の循環系統には、
一般に鉄を主体とした構造材が使用されている。
これらの構造材の腐蝕を抑制するため、ボイラー
給水の純度を上げる以外に、溶存酸素量を低減さ
せ、アンモニアを添加する方法が採用されてい
る。しかし、これらの方法によつても、最近の高
圧ボイラーでは蒸気温度が300℃以上の高温にな
つているので、多少の腐蝕生成物の発生はまぬが
れ得ない。これらの腐蝕生成物はボイラー復水中
に混入してくるが、その主体はFe3O4、Fe2O3、
FeOOH、Fe（OH）3等で、これらに微量のクロ
ム、ニツケル、銅の水酸化物、酸化物等が混入し
たものとされており、大部分は非イオン性の微粒
の懸濁物質として水中に存在している。 Boiler and boiler condensate circulation systems include:
Structural materials mainly made of iron are generally used.
In order to suppress corrosion of these structural materials, in addition to increasing the purity of boiler feed water, methods have been adopted to reduce the amount of dissolved oxygen and add ammonia. However, even with these methods, since the steam temperature in modern high-pressure boilers is as high as 300°C or higher, some corrosion products cannot be avoided. These corrosion products are mixed into the boiler condensate, but the main components are Fe 3 O 4 , Fe 2 O 3 ,
FeOOH, Fe(OH) 3 , etc. are said to be mixed with trace amounts of chromium, nickel, copper hydroxides, oxides, etc., and most of them are suspended in nonionic fine particles in water. exists in
これらの非イオン性の微粒の懸濁物質は、ボイ
ラー復水を混合床イオン交換装置で処理してもイ
オン交換樹脂とイオン交換せず、僅かに一部分が
混合床イオン交換装置の過作用により復水から
除去されるだけで、大部分はそのまま混合床イオ
ン交換装置を通過する。復水中の微粒の懸濁物質
がボイラー中に持ち込まれると種々の障害の原因
となるので、多孔性のセラミツクフイルターで処
理したり、粉末状のイオン交換樹脂を主体とする
床で処理したりして除去する方法が提案されて
いる。 These nonionic fine suspended solids are not ion-exchanged with the ion exchange resin even when boiler condensate is treated with a mixed-bed ion exchanger, and only a small portion is recovered due to overaction of the mixed-bed ion exchanger. It is only removed from the water and the majority passes intact through the mixed bed ion exchanger. If fine suspended solids in condensate are brought into the boiler, they can cause various problems, so they should be treated with a porous ceramic filter or with a bed made mainly of powdered ion exchange resin. A method of removing it has been proposed.
本発明は改良された混合床イオン交換装置で、
これらの非イオン性の微粒の懸濁物質を効率よく
除去する方法を提供するものである。 The present invention is an improved mixed bed ion exchange device comprising:
The object of the present invention is to provide a method for efficiently removing these nonionic fine suspended substances.
本発明によれば、ボイラー復水を粒状の強酸性
陽イオン交換樹脂と強塩基性陰イオン交換樹脂か
らなる混合床イオン交換装置に通水するボイラー
復水の処理方法において、該混合床イオン交換装
置をカチオン性高分子電解質で処理した強酸性陽
イオン交換樹脂を用いて形成することにより、復
水中の懸濁物質を効率よく除去することができ
る。 According to the present invention, in a method for treating boiler condensate in which boiler condensate is passed through a mixed bed ion exchange device comprising a granular strongly acidic cation exchange resin and a strongly basic anion exchange resin, the mixed bed ion exchange By forming the device using a strongly acidic cation exchange resin treated with a cationic polymer electrolyte, suspended solids in condensate can be efficiently removed.
本発明について更に詳細に説明すれば、従来、
強酸性陽イオン交換樹脂と強塩基性陰イオン交換
樹脂とを混合すると、樹脂が互に付着し合つて塊
状となるいわゆる“からみ”現象が生ずることが
知られており、これは樹脂が互に静電的に吸引し
合うためと考えられている。従つて混合床を形成
する際には、一般に、強塩基性陰イオン交換樹脂
をポリスチレンスルホン酸等のアニオン性高分子
電解質で処理して、樹脂が塊状にならないように
して使用されている。 To explain the present invention in more detail, conventionally,
It is known that when a strongly acidic cation exchange resin and a strongly basic anion exchange resin are mixed, a so-called "entanglement" phenomenon occurs in which the resins adhere to each other and form a lump. It is thought that this is due to electrostatic attraction. Therefore, when forming a mixed bed, a strongly basic anion exchange resin is generally treated with an anionic polymer electrolyte such as polystyrene sulfonic acid to prevent the resin from forming lumps.
本発明ではこのような従来法とは異なり、強酸
性陽イオン交換樹脂をカチオン性高分子電解質で
処理して、混合床の形成に使用する。カチオン性
高分子電解質としては、構成単位中にカチオン性
基を含む線状の高分子電解質が用いられる。例え
ばポリ（トリメチルアンモニウムメチルスチレ
ン）のようなポリスチレンのフエニル基にアルキ
ル基を介して１〜３級アミンないし４級アンモニ
ウム基が結合したものや、ビニルピリジンまたは
その誘導体の線状重合物、さらにはポリ（メタク
リルオキシエチルトリメチルアンモニウム）のよ
うな（メタ）アクリル酸のポリマーにエステル結
合またはアマイド結合を介して１〜３級アミンな
いし第４級アンモニウム基が結合したもの等が用
いられる。これらのポリマー中にはカチオン性基
をもたないモノマーが共重合していても差支えな
い。これらの高分分電解質は、その一分子中のイ
オン性基がイオン交換樹脂のイオン性基と複数の
点でイオン結合し、いわゆるポリマーコンプレツ
クスを生成する大きさであればよく、通常は103
〜５×105程度の分子量のものが用いられる。 In the present invention, unlike such conventional methods, a strongly acidic cation exchange resin is treated with a cationic polymer electrolyte and used to form a mixed bed. As the cationic polymer electrolyte, a linear polymer electrolyte containing a cationic group in its structural unit is used. For example, polystyrene such as poly(trimethylammonium methylstyrene) in which a primary to tertiary amine or quaternary ammonium group is bonded to the phenyl group via an alkyl group, a linear polymer of vinylpyridine or its derivatives, and A polymer in which a primary to tertiary amine or a quaternary ammonium group is bonded to a polymer of (meth)acrylic acid such as poly(methacryloxyethyltrimethylammonium) via an ester bond or an amide bond is used. There is no problem even if a monomer having no cationic group is copolymerized in these polymers. These polymer electrolytes need only have a size such that the ionic groups in one molecule form ionic bonds with the ionic groups of the ion exchange resin at multiple points to form a so-called polymer complex; 3
Those having a molecular weight of about 5×10 5 are used.
これらの高分子電解質は、強酸性陽イオン交換
樹脂１につき、カチオン性基の量として通常
0.05〜10ミリ当量、好ましくは0.1〜２ミリ当量
となる量で使用される。 These polymer electrolytes are usually used in terms of the amount of cationic groups per strongly acidic cation exchange resin.
It is used in an amount of 0.05 to 10 milliequivalents, preferably 0.1 to 2 milliequivalents.
強酸性陽イオン交換樹脂をこれらの高分子電解
質で処理するには、樹脂をその１〜３倍量の水と
共に容器に入れ、撹拌しながら、これに所定量の
高分子電解質を含む溶液を添加し、30分間程度反
応されればよい。これにより高分子電解質は樹脂
に吸着されるが、その量が少ないので樹脂のイオ
ン交換能力には殆んど影響しない。 To treat strongly acidic cation exchange resins with these polyelectrolytes, the resin is placed in a container with 1 to 3 times the volume of water, and a solution containing a predetermined amount of polyelectrolytes is added to this while stirring. It is sufficient to react for about 30 minutes. As a result, the polymer electrolyte is adsorbed onto the resin, but since the amount thereof is small, it hardly affects the ion exchange ability of the resin.
本発明では、このようにして処理した強酸性陽
イオン交換樹脂と強塩基性陰イオン交換樹脂と
で、常法により混合床を形成する。強酸性陽イオ
ン交換樹脂としては、例えばダイヤイオン
SK1B、SK1BN、SKN−１、PK228等が用いら
れ、強塩基性陰イオン交換樹脂としては例えばダ
イヤイオンSA10A、SA20A、SA10BN、SAN−
１、PA312、PA316等が用いられる（ダイヤイオ
ンは三菱化成工業(株)の登録商標）。 In the present invention, a mixed bed is formed by a conventional method using the strongly acidic cation exchange resin and the strongly basic anion exchange resin treated in this way. Examples of strong acidic cation exchange resins include Diaion.
SK1B, SK1BN, SKN-1, PK228, etc. are used, and examples of strong basic anion exchange resins include Diaion SA10A, SA20A, SA10BN, SAN-
1, PA312, PA316, etc. are used (Diaion is a registered trademark of Mitsubishi Chemical Industries, Ltd.).
強酸性陽イオン交換樹脂と強塩基性陰イオン交
換樹脂との混合比率は一般に体積比で１：３〜
３：１であり、混合床の層高は一般に60〜200cm
である。また混合床中の復水の流速は空塔速度で
50〜130ｍ／hrが適当である。 The mixing ratio of strongly acidic cation exchange resin and strongly basic anion exchange resin is generally 1:3 to 1:3 by volume.
3:1, and the bed height of the mixed bed is generally 60 to 200 cm.
It is. In addition, the flow rate of condensate in the mixed bed is the superficial velocity.
50 to 130 m/hr is appropriate.
本発明方法により復水中のコロイド状の懸濁物
質が効率よく除去し得る理由はつまびらかではな
いが、イオン交換樹脂および懸濁物質の表面荷電
が影響しているものと考えられる。すなわち復水
中のコロイド状の懸濁物質の表面荷電は一般に負
であると考えられる。一方、強塩基性陰イオン交
換樹脂の表面荷電は正、強酸性陽イオン交換樹脂
の表面荷電は負である。しかし、強酸性陽イオン
交換樹脂をカチオン性高分子電解質で処理する
と、その表面荷電は処理の程度に応じて負から正
に変化する。従つてカチオン性高分子電解質で処
理した強酸性陽イオン交換樹脂で形成した混合床
は、床内の樹脂粒がすべて正の表面荷電状態にあ
るので、負の表面荷電の懸濁物質を静電的に吸着
しやすいものと考えられる。 Although the reason why colloidal suspended solids in condensate can be efficiently removed by the method of the present invention is not clear, it is thought that the surface charge of the ion exchange resin and suspended solids has an effect. That is, the surface charge of colloidal suspended matter in condensate is generally considered to be negative. On the other hand, the surface charge of a strongly basic anion exchange resin is positive, and the surface charge of a strongly acidic cation exchange resin is negative. However, when a strongly acidic cation exchange resin is treated with a cationic polymer electrolyte, its surface charge changes from negative to positive depending on the degree of treatment. Therefore, in a mixed bed formed of a strongly acidic cation exchange resin treated with a cationic polymer electrolyte, all the resin particles in the bed have a positive surface charge, so suspended matter with a negative surface charge can be electrostatically removed. It is thought that it is easily adsorbed.
次に実施例により本発明をさらに具体的に説明
するが、本発明はその要旨を超えない限り、以下
の実施例に限定されるものではない。 Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to the following Examples unless it exceeds the gist thereof.
実施例 １
内径50mm、高さ1500mmのアクリル製カラムに強
酸性陽イオン交換樹脂ダイヤイオン
SK1BNを
1300mlと強塩基性陰イオン交換樹脂ダイヤイオン
SA10BN650mlとを均一に混合して充填した。
この際、混合する前に、陽イオン交換樹脂は予め
カチオン性高分子電解質〔平均分子量12000の線
状ポリスチレンをクロルメチル化し、トリメチル
アミンを反応させたポリ（トリメチルアンモニウ
ムメチルスチレン）〕を樹脂１当り、アンモニ
ウム基として２ミリ当量となる量を添加して表面
処理を施した。樹脂の混合時に陽陰両樹脂のから
みは全く見られず、充填層高は101cmとなつた。
このカラムに、圧力120Kg／cm2、蒸気温度540℃の
貫流ボイラーのヒータドレイン水を空塔線速度
120ｍ／hrで通液した。このヒータドレイン水の
温度は約35℃であり、コロイダル鉄を平均して
18ppb、アンモニアを350〜400ppb、ヒドラジン
を180〜210ppb含有していた。樹脂カラム出口水
の通水初期７日間の平均の電気電導率は0.06μS／
cm（25℃）であり非常に高純度の処理水が得ら
れ、コロイダル鉄の平均濃度は0.65ppbであつた。
コロイダル鉄の平均除染係数（カラム入口濃度／
カラム出口濃度）は28であり極めて良くコロイダ
ル鉄を除去することができた。Example 1 Strongly acidic cation exchange resin Diamond SK1BN was placed in an acrylic column with an inner diameter of 50 mm and a height of 1500 mm.
1300ml and strong basic anion exchange resin Diaion
SA10BN (650ml) was mixed uniformly and filled.
At this time, before mixing, the cation exchange resin is preliminarily mixed with a cationic polymer electrolyte [poly(trimethylammonium methylstyrene) obtained by chloromethylating linear polystyrene with an average molecular weight of 12,000 and reacting it with trimethylamine] in an amount of ammonium The surface treatment was performed by adding an amount of 2 milliequivalents as a base. When the resins were mixed, no entanglement was observed between the positive and negative resins, and the packed bed height was 101 cm.
Heater drain water from a once-through boiler with a pressure of 120 Kg/cm 2 and a steam temperature of 540°C was applied to this column at a superficial linear velocity.
The liquid was passed at a rate of 120 m/hr. The temperature of this heater drain water is about 35℃, and the average colloidal iron
It contained 18 ppb, 350-400 ppb ammonia, and 180-210 ppb hydrazine. The average electrical conductivity during the initial 7 days of water flow at the outlet of the resin column was 0.06μS/
cm (25°C), very high purity treated water was obtained, and the average concentration of colloidal iron was 0.65 ppb.
Average decontamination coefficient of colloidal iron (column inlet concentration/
The column outlet concentration) was 28, and colloidal iron could be removed extremely well.
尚この際コロイダル鉄とは0.45μｍの穴径のミ
リポアフイルターに捕集されると鉄とし、鉄の分
析は螢光Ｘ線法によつて行つた。 At this time, colloidal iron was considered to be iron when collected by a Millipore filter with a hole diameter of 0.45 μm, and iron analysis was performed by fluorescent X-ray method.
実施例 ２
カチオン性高分子電解質として、平均分子量
15000のポリ（メタクリルオキシエチルトリメチ
ルアンモニウム）を使用した以外は、実施例１と
全く同様な試験を実施した。その結果、混合時に
陽陰両樹脂のからみは全く見られず、充填層高は
100cmであり、カラム流出液中のコロイダル鉄量
は平均0.80ppbであり、コロイダル鉄の除染係数
は23であつた。Example 2 As a cationic polymer electrolyte, average molecular weight
A test was conducted exactly as in Example 1, except that 15,000 poly(methacryloxyethyltrimethylammonium) was used. As a result, no entanglement was observed between the positive and negative resins during mixing, and the packed bed height was
100 cm, the average amount of colloidal iron in the column effluent was 0.80 ppb, and the decontamination coefficient of colloidal iron was 23.
比較例 １
樹脂を混合する前に、陽イオン交換樹脂を、予
めカチオン性高分子電解質で処理することなく、
未処理のまま使用した以外は、実施例１と全く同
様に試験した。その結果、陽陰両樹脂の混合時
に、強いからみ現象が生じ、樹脂粒子は塊状とな
つた。このためカラムへ充填した際の充填層高は
135cmとなり、カラムへの充填密度は実施例１及
び２と比較して約26％低下した。Comparative Example 1 Before mixing the resins, the cation exchange resin was not treated with a cationic polymer electrolyte in advance,
The test was carried out in exactly the same manner as in Example 1, except that it was used untreated. As a result, when the positive and negative resins were mixed, a strong entanglement phenomenon occurred, and the resin particles became lump-like. Therefore, the height of the packed bed when packed into the column is
The packing density of the column was 135 cm, which was about 26% lower than that of Examples 1 and 2.
一方カラム流出液中のコロイダル鉄量は平均
1.9ppbであり、除染係数は9.5であつた。 On the other hand, the average amount of colloidal iron in the column effluent is
It was 1.9 ppb, and the decontamination coefficient was 9.5.
更に７日間の通液終了後樹脂を再生して繰返し
使用するために、上向水流による陽陰樹脂の逆洗
分離を試みたが、からみ現象のため、陽陰両樹脂
を互に分離することはできなかつた。 Furthermore, in order to regenerate the resin and use it repeatedly after 7 days of liquid flow, an attempt was made to backwash and separate the positive and negative resins using upward water flow, but due to the entanglement phenomenon, it was difficult to separate the positive and negative resins from each other. I couldn't.
比較例 ２
樹脂を混合する前に陽イオン交換樹脂をカチオ
ン性高分子電解質で処理する代りに、陰イオン交
換樹脂をアニオン性高分子電解質（平均分子量
12000の線状ポリスチレンをスルホン化したポリ
スチレンスルホン酸）を樹脂１当り、スルホン
酸基として、２ミリ当量となる量を添加して表面
処理し、陽イオン交換樹脂は未処理のまま使用し
た以外は実施例１と全く同様に試験した。Comparative Example 2 Instead of treating the cation exchange resin with a cationic polyelectrolyte before mixing the resins, the anion exchange resin was treated with an anionic polyelectrolyte (average molecular weight
12,000 polystyrene sulfonic acid (sulfonated linear polystyrene) was added in an amount of 2 milliequivalents as sulfonic acid groups per resin for surface treatment, and the cation exchange resin was used untreated. The test was conducted in exactly the same manner as in Example 1.
その結果、樹脂の混合時には、陽陰両樹脂のか
らみは全く見られず、充填層高は100cmであつた
が、カラム流出液中のコロイダル鉄量は平均
2.7ppbで、除染係数は6.7であつた。 As a result, when the resins were mixed, no entanglement was observed between the positive and negative resins, and although the packed bed height was 100 cm, the average amount of colloidal iron in the column effluent was
It was 2.7 ppb, and the decontamination coefficient was 6.7.
Claims (1)
脂と強塩基性陰イオン交換樹脂からなる混合床イ
オン交換装置に通水するボイラー復水の処理方法
において、該混合床イオン交換装置をカチオン性
高分子電解質で処理した強酸性陽イオン交換樹脂
を用いて形成することを特徴とする方法。 ２ 特許請求の範囲第１項記載の処理方法におい
て、ボイラー復水がアンモニアを含んでいること
を特徴とする方法。[Scope of Claims] 1. A method for treating boiler condensate in which boiler condensate is passed through a mixed bed ion exchange device comprising granular strongly acidic cation exchange resins and strongly basic anion exchange resins, wherein the mixed bed ions A method characterized in that the exchange device is formed using a strongly acidic cation exchange resin treated with a cationic polymer electrolyte. 2. The treatment method according to claim 1, wherein the boiler condensate contains ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9469180A JPS5721978A (en) | 1980-07-11 | 1980-07-11 | Treating method for boiler condensate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9469180A JPS5721978A (en) | 1980-07-11 | 1980-07-11 | Treating method for boiler condensate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5721978A JPS5721978A (en) | 1982-02-04 |
| JPH0138554B2 true JPH0138554B2 (en) | 1989-08-15 |
Family
ID=14117207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9469180A Granted JPS5721978A (en) | 1980-07-11 | 1980-07-11 | Treating method for boiler condensate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5721978A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4559299A (en) * | 1983-02-04 | 1985-12-17 | Brown University Research Foundation Inc. | Cytotoxicity assays in cell culturing devices |
| KR100426051B1 (en) * | 2001-07-26 | 2004-04-06 | 린나이코리아 주식회사 | Condensate water disposal for boiler |
| JP5567539B2 (en) | 2011-10-28 | 2014-08-06 | ローム アンド ハース カンパニー | Pretreated cation exchange resin, treatment method thereof and mixed bed system containing cation exchange resin |
-
1980
- 1980-07-11 JP JP9469180A patent/JPS5721978A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5721978A (en) | 1982-02-04 |
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