JPH03181385A - Removing method for suspendible impurity - Google Patents
Removing method for suspendible impurityInfo
- Publication number
- JPH03181385A JPH03181385A JP1318958A JP31895889A JPH03181385A JP H03181385 A JPH03181385 A JP H03181385A JP 1318958 A JP1318958 A JP 1318958A JP 31895889 A JP31895889 A JP 31895889A JP H03181385 A JPH03181385 A JP H03181385A
- Authority
- JP
- Japan
- Prior art keywords
- exchange resin
- crud
- anion exchange
- water
- ion exchange
- 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
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000012535 impurity Substances 0.000 title claims abstract description 11
- 239000003957 anion exchange resin Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000005342 ion exchange Methods 0.000 claims abstract description 16
- 238000010248 power generation Methods 0.000 claims abstract description 10
- 238000000746 purification Methods 0.000 claims description 2
- 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 abstract description 16
- 239000003729 cation exchange resin Substances 0.000 abstract description 12
- 238000007796 conventional method Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000012498 ultrapure water Substances 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000001914 filtration Methods 0.000 description 8
- 238000010612 desalination reaction Methods 0.000 description 7
- 239000003456 ion exchange resin Substances 0.000 description 6
- 229920003303 ion-exchange polymer Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000011033 desalting Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CHRJZRDFSQHIFI-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;styrene Chemical compound C=CC1=CC=CC=C1.C=CC1=CC=CC=C1C=C CHRJZRDFSQHIFI-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 229940023913 cation exchange resins Drugs 0.000 description 1
- 150000001768 cations Chemical group 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000005115 demineralization Methods 0.000 description 1
- 230000002328 demineralizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036449 good health Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、混床式濾過脱塩による懸濁性不純物の除去方
法に関し、特に従来品よりもイオン交換容量および／ま
たは表面電位を低下させた陰イオン交換樹脂と、陽イオ
ン交換樹脂を混合してなる混床式濾過脱塩方法を用いた
懸濁性不純物の除去方法方法に関するものである。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method for removing suspended impurities by mixed bed filtration and desalination, and in particular, a method for removing suspended impurities by lowering ion exchange capacity and/or surface potential than conventional products. The present invention relates to a method for removing suspended impurities using a mixed bed filtration and desalting method in which an anion exchange resin and a cation exchange resin are mixed.
汽力発電設備では、ボイラーの内部を常に清浄な状態に
保たなければならないので、タービン復水器からボイラ
ー内へ環流する復水を復水脱塩器にて浄化処理し、高度
に浄化した後、ボイラー内への冷却水として給水してい
る。In steam power generation equipment, the inside of the boiler must be kept clean at all times, so the condensate that flows back into the boiler from the turbine condenser is purified in a condensate desalination device, after which it is highly purified. , water is supplied to the boiler as cooling water.
この復水脱塩器は、陽イオン交換樹脂と陰イオン交換樹
脂とが混合充填された、いわゆる混床式脱塩塔であって
、復水中のイオン成分と懸濁性不純物（クラッドと通称
される。）とをイオン交換及び吸着によって分離し、復
水を浄化するものである。そして、陽イオン交換樹脂と
陰イオン交換樹脂とを混合して混床を形成する方法とし
ては、ゲル型樹脂とポーラス型樹脂を使用する方法が提
案され採用されてきた。This condensate demineralizer is a so-called mixed bed demineralizer that is packed with a mixture of cation exchange resin and anion exchange resin, and contains ionic components and suspended impurities (commonly known as crud) in the condensate. ) is separated by ion exchange and adsorption, and the condensate is purified. As a method for forming a mixed bed by mixing a cation exchange resin and an anion exchange resin, a method using a gel type resin and a porous type resin has been proposed and adopted.
この粒状イオン交換樹脂を用いる方法にあっては、イオ
ン交換樹脂に吸着されたイオン成分やクラッドは、定期
的に化学的薬品再生や物理的逆洗再生を施すことによっ
て、イオン交換樹脂から不純物を除去し、常に復水脱塩
塔の清浄度の維持に務めている。In this method using granular ion exchange resin, impurities are removed from the ion exchange resin by periodically performing chemical regeneration and physical backwashing to remove the ion components and crud adsorbed on the ion exchange resin. and is constantly working to maintain the cleanliness of the condensate demineralization tower.
最近、汽力発電設備においては、復水からイオン成分や
クラッドの除去効果のうち、クラッドの除去効果を強化
することにより、復水からボイラーへ持ち込まれるクラ
ッドを低減し、ボイラーの健全性を維持する傾向があり
、前述のイオン交換樹脂を用いる方法ではクラッドの除
去効果が小さく、装置の高度化要求に対応できないこと
が判った。Recently, in steam power generation equipment, the effectiveness of removing ionic components and crud from condensate has been strengthened, reducing the amount of crud carried into the boiler from condensate and maintaining the integrity of the boiler. It was found that the method using the above-mentioned ion exchange resin had a small crud removal effect and could not meet the demands for more sophisticated equipment.
本発明者はこのような現状に鑑み鋭意研究を重ね本発明
に想到したものであって、本発明は復水の処理操作にお
いて、クラッドの分離能力の大きい混床式濾過脱塩方法
を提供することを目的とする。In view of the current situation, the present inventor has conducted extensive research and has come up with the present invention, and the present invention provides a mixed bed filtration desalination method that has a large crud separation capacity in a condensate treatment operation. The purpose is to
本発明は、汽力発電設備の復水浄化装置の被処理水中に
微量存在する懸濁性不純物を、陽イオン交換樹脂及び陰
イオン交換樹脂から成る混床によって濾過脱塩する懸濁
性不純物の除去方法において、イオン交換量が０．９〜
１．１ｍｅｑ／ｍｌ・Ｒ−ＣＩ及び／又は表面電位が２
０〜３５ｍＶである該陰イオン交換樹脂を用いることを
特徴とする懸濁性不純物の除去方法であり、これにより
上記課題を解決することができる。The present invention is a method for removing suspended impurities that exists in trace amounts in the water to be treated in a condensate purification system for steam power generation equipment by filtering and desalting them using a mixed bed consisting of a cation exchange resin and an anion exchange resin. In the method, the amount of ion exchange is from 0.9 to
1.1meq/ml・R-CI and/or surface potential is 2
This is a method for removing suspended impurities characterized by using the anion exchange resin having a voltage of 0 to 35 mV, and thereby the above-mentioned problems can be solved.
本発明において、汽力発電設備とは、火力、原子力発電
等の設備を、復水浄化装置の被処理水中に微量存在する
懸濁性不純物とは、主に金属酸化物、例えば、酸化鉄、
酸化銅等のコロイド物質でクラッドと通称されるものを
意味する。In the present invention, steam power generation equipment refers to thermal power generation, nuclear power generation, etc.
It refers to colloidal substances such as copper oxide, commonly known as cladding.
本発明に用いられる陽イオン交換樹脂及び陰イオン交換
樹脂は上記条件を満足するならば特に限定されず、業界
公知のものが使用できるが、好ましくは、ゲル型樹脂、
具体的には、スチレン・ジビニルベンゼン共重合を基体
とした、強酸性ゲル型陽イオン交換樹脂及び強塩基性陰
イオン交換樹脂等が挙げられる。また、該両樹脂の形状
も任意であるが、乾燥時の平均粒径が粒状の場合、３５
０〜１２００１−１粉末状の場合、３０〜２００−の範
囲の粒状または粉末状のものが好ましい。The cation exchange resin and anion exchange resin used in the present invention are not particularly limited as long as they satisfy the above conditions, and those known in the industry can be used, but preferably gel type resins,
Specifically, strong acidic gel-type cation exchange resins and strong basic anion exchange resins based on styrene/divinylbenzene copolymerization may be mentioned. In addition, the shape of both resins is also arbitrary, but when the average particle size when dried is granular, 35
In the case of 0 to 12001-1 powder, granules or powder in the range of 30 to 200 are preferred.
本発明に用いられる陰イオン交換樹脂のイオン交換容量
の単位、ｍｅｑ／ｍｌ −Ｒ−ＣＩは樹脂基準型体積基
準単位当たりの当量数を意味し、本発明では、この値を
従来のゲル型樹脂の標準値（１，２〜１．４ｍｅｑ／ｍ
ｌ−Ｒ−ＣＩ）よりも低下させた範囲（０，９〜１．１
ｍｅｑ／ｍｌ・Ｒ−ＣＩ）とする。The unit of ion exchange capacity of the anion exchange resin used in the present invention, meq/ml -R-CI, means the number of equivalents per resin-based volume basis, and in the present invention, this value is compared to that of conventional gel-type resins. standard value (1.2 to 1.4 meq/m
range (0.9 to 1.1) lower than l-R-CI)
meq/ml・R-CI).
又は、該陰イオン交換樹脂の表面電位を従来品のゲル型
樹脂の標準値（３５〜４５ｍＶ）よりも低下させた範囲
（２０〜３５ｍＶ）とするか、前記０．９〜１．１ｍｅ
ｑ／ｍｌ −Ｒ−ＣＩのイオン交換容量の樹脂とこの２
０〜３５ｍＶの範囲の樹脂とを併用する。即ち、カラム
に充填された陰イオン交換樹脂のイオン交換容量と表面
電位とがともに上記本発明の範囲にあらなければならな
いとは限らない。該表面電位は、具体的には、電気泳動
法により測定できる。Alternatively, the surface potential of the anion exchange resin is set to a range (20 to 35 mV) lower than the standard value (35 to 45 mV) of conventional gel type resins, or the above 0.9 to 1.1 me
q/ml -R-CI resin with ion exchange capacity and this 2
It is used together with a resin in the range of 0 to 35 mV. That is, both the ion exchange capacity and the surface potential of the anion exchange resin packed in the column do not necessarily have to fall within the scope of the present invention. Specifically, the surface potential can be measured by electrophoresis.
又、本発明における陰イオン交換樹脂を該イオン交換容
量、表面電位に調整するための具体的手段としては、製
造段階では、ジビニルベンゼンの含有量を調整すること
により可能であり、また、人為的には高分子電解質処理
等により調整できる。In addition, specific means for adjusting the ion exchange capacity and surface potential of the anion exchange resin in the present invention include adjusting the content of divinylbenzene at the manufacturing stage, and artificial means. can be adjusted by polymer electrolyte treatment, etc.
本発明においては、従来の混床式濾過脱塩方法に比較し
、陰イオン交換樹脂のイオン交換容量及び／又は表面電
位が低いため、クラッドとの間に働く相互作用が小さく
陽イオン交換樹脂がクラッドを捕捉し易い環境となるこ
とにより、濾過脱塩操作に際し、よりクラッド濃度の低
い高純度の復水を得ることができる。In the present invention, since the ion exchange capacity and/or surface potential of the anion exchange resin is lower than in the conventional mixed bed filtration desalination method, the interaction with the cladding is small and the cation exchange resin is By creating an environment that easily traps crud, highly purified condensate with a lower crud concentration can be obtained during filtration and desalination operations.
以下、本発明を従来技術と対比して述べれば、表−１は
従来の陰イオン交換樹脂の物性を比較したものであが、
本発明の陰イオン交換樹脂は従来品よりイオン交換容量
が小さく、また表面電位が小さいことがわかる。Hereinafter, to describe the present invention in comparison with the prior art, Table 1 compares the physical properties of conventional anion exchange resins.
It can be seen that the anion exchange resin of the present invention has a lower ion exchange capacity and a lower surface potential than conventional products.
表−１陰イオン交換樹脂物性測定例
〔実施例〕
以下、本発明を具体的実施例、比較例に基づき、更に詳
細に説明するが、本発明は、これに限定されるものでは
ない。Table 1 Examples of measuring physical properties of anion exchange resin [Example] The present invention will be described in more detail below based on specific examples and comparative examples, but the present invention is not limited thereto.
本発明の濾過脱塩方式におけるクラッド除去効果を混床
実機長カラム試験により、従来の濾過脱塩操作と比較す
る。The crud removal effect of the filtration-desalting method of the present invention will be compared with that of conventional filtration-desalting operation through a mixed-bed actual length column test.
■試験条件
第１図の試験装置を使用し、以下の条件により試験を行
った。■Test conditions The test was conducted under the following conditions using the test apparatus shown in Figure 1.
（ｉ）樹脂仕様：従来の強塩基性ゲル型陰イオン交換樹
脂（ＯＨ型；イオン交換
容量＝ １．３ｍｅｑ／ｍｌ ・Ｒ−ＣＩ、表面電位＝
３５ｍＶ）及び本発明の強塩
基性ゲル型陰イオン交換樹脂（
ＯＨ型；イオン交換容量＝１．０ｍ
ｅｑ／ｍｌ−Ｒ−ＣＩ、表面電位＝２５ｍＶ）と強酸性
ゲル型陽イオン交換樹
脂を組み合わせて混床状態で使
用。(i) Resin specifications: Conventional strong basic gel type anion exchange resin (OH type; ion exchange capacity = 1.3 meq/ml ・R-CI, surface potential =
35 mV) and the strong basic gel type anion exchange resin of the present invention (OH type; ion exchange capacity = 1.0 m eq/ml-R-CI, surface potential = 25 mV) and a strong acid gel type cation exchange resin. Used in mixed bed condition.
（ｉｉ）樹脂量：陽イオン／陰イオン交換樹脂比＝１．
６／１で層高９Ｑｃ＋＋＋相当分〈約２１！〉を混合し
て充填。(ii) Resin amount: cation/anion exchange resin ratio = 1.
At 6/1, the layer height is equivalent to 9Qc+++ (approx. 21! ＞Mix and fill.
（ｉｉｉ ）通水線流速： Ｌ Ｖ ＝１０８ｍ／ｈ（
ｉｖ）通水期間：２週間
第１図の試験装置は、カラムユニットとサンプリングユ
ニットからなり、カラムユニットは、上記条件で通水さ
れる被処理水をカラムに導入する管、弁及び圧力スイッ
チＰＳ、圧力ゲージＰＩ、温度計ＴＩ、及び上記樹脂が
充填されるカラムから概略構成され、サンプリングユニ
ットは、該樹脂により濾過脱塩処理された処理水を処理
水出口に導く管、流量計Ｆｌ、濾紙ＭＰ、イオン交換濾
紙１１３Ｐ 、積算流量計ＦＱ、導電率計ＣＥからなり
、第２図に示したクラッド鉄濃度を有する被処理水１を
上記条件にて処理し、処理水出口の同濃度を経時的に測
定した。(iii) Water line flow velocity: L V = 108 m/h (
iv) Water flow period: 2 weeks The test device shown in Figure 1 consists of a column unit and a sampling unit, and the column unit includes a pipe, a valve, and a pressure switch PS for introducing the treated water into the column, which is passed under the above conditions. , a pressure gauge PI, a thermometer TI, and a column filled with the resin, and the sampling unit includes a pipe that guides the treated water that has been filtered and desalinated by the resin to the treated water outlet, a flow meter Fl, and a filter paper. It consists of MP, ion exchange filter paper 113P, integral flowmeter FQ, and conductivity meter CE, and treated water 1 having the clad iron concentration shown in Fig. 2 is treated under the above conditions, and the same concentration at the outlet of the treated water is measured over time. was measured.
■試験結果
第２図に試験結果の一例を示す。第２図において、横軸
は通水日数を示し、縦軸はカラム入口及び出口のクラッ
ド鉄濃度を示す。■Test results Figure 2 shows an example of the test results. In FIG. 2, the horizontal axis shows the number of days of water flow, and the vertical axis shows the cladding iron concentration at the column inlet and outlet.
これによれば、陰イオン交換樹脂の交換容量及び表面電
位を低下させた組合せの本発明例３の方が、従来例２よ
りクラッド除去能力が高いことが確認できた。According to this, it was confirmed that Example 3 of the present invention, in which the exchange capacity and surface potential of the anion exchange resin were lowered, had a higher crud removal ability than Conventional Example 2.
本発明のイオン交換樹脂による濾過脱塩方法におけるク
ラッド除去効果は、従来の濾過脱塩方法よりも大幅に優
れていることが確認され、その結果、汽力発電設備の復
水を高度に浄化することが可能となり、ボイラーを健全
に維持でき、実用上、極めて有利な方法であるといえる
。It has been confirmed that the crud removal effect of the filtration desalination method using the ion exchange resin of the present invention is significantly superior to that of the conventional filtration desalination method, and as a result, it is possible to highly purify condensate in steam power generation equipment. This makes it possible to maintain the boiler in good health, making it an extremely advantageous method in practice.
第１図は、本発明の成果を証明すべ〈実施した混床式カ
ラム試験装置の系統図であり、第２図は混床式カラム試
験結果のうち、イオン交換樹脂によるクラッド除去に関
する破過曲線の一例を示すグラフである。
符号の説明
１：被処理水人口水中のクラッド鉄濃度：従来法処理水
出口のクラッド鉄濃度
二本発明性処理水出口のクラッド鉄濃度（ほか３名）
第
１
図
第
図
通水日数（日）Figure 1 is a system diagram of the mixed bed column test equipment used to prove the results of the present invention, and Figure 2 shows the breakthrough curve for crud removal by ion exchange resin among the mixed bed column test results. It is a graph showing an example. Explanation of symbols 1: Concentration of clad iron in artificial water to be treated: Concentration of clad iron at the outlet of water treated by the conventional method.2 Concentration of clad iron at the outlet of the water treated by the present invention (and 3 other people). )
Claims (1)
る懸濁性不純物を、陽イオン交換樹脂及び陰イオン交換
樹脂から成る混床によって濾過脱塩する懸濁性不純物の
除去方法において、イオン交換量が０．９〜１．１ｍｅ
ｑ／ｍｌ・Ｒ−Ｃｌ及び／又は表面電位が２０〜３５ｍ
Ｖである該陰イオン交換樹脂を用いることを特徴とする
懸濁性不純物の除去方法。In a method for removing suspended impurities that exists in small amounts in the water to be treated in a condensate purification device of steam power generation equipment, ion Exchange amount is 0.9~1.1me
q/ml・R-Cl and/or surface potential is 20-35m
A method for removing suspended impurities characterized by using the anion exchange resin V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1318958A JPH03181385A (en) | 1989-12-11 | 1989-12-11 | Removing method for suspendible impurity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1318958A JPH03181385A (en) | 1989-12-11 | 1989-12-11 | Removing method for suspendible impurity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03181385A true JPH03181385A (en) | 1991-08-07 |
| JPH0512997B2 JPH0512997B2 (en) | 1993-02-19 |
Family
ID=18104892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1318958A Granted JPH03181385A (en) | 1989-12-11 | 1989-12-11 | Removing method for suspendible impurity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03181385A (en) |
-
1989
- 1989-12-11 JP JP1318958A patent/JPH03181385A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0512997B2 (en) | 1993-02-19 |
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