JPH0445232B2 - - Google Patents
Info
- Publication number
- JPH0445232B2 JPH0445232B2 JP28127988A JP28127988A JPH0445232B2 JP H0445232 B2 JPH0445232 B2 JP H0445232B2 JP 28127988 A JP28127988 A JP 28127988A JP 28127988 A JP28127988 A JP 28127988A JP H0445232 B2 JPH0445232 B2 JP H0445232B2
- Authority
- JP
- Japan
- Prior art keywords
- exchange resin
- resin
- cation exchange
- water content
- bed
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 62
- 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 37
- 239000003729 cation exchange resin Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 28
- 239000003957 anion exchange resin Substances 0.000 claims description 26
- 238000010612 desalination reaction Methods 0.000 claims description 26
- 239000011347 resin Substances 0.000 claims description 25
- 229920005989 resin Polymers 0.000 claims description 25
- 239000003456 ion exchange resin Substances 0.000 claims description 9
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 5
- 229940023913 cation exchange resins Drugs 0.000 claims 2
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 14
- 238000000926 separation method Methods 0.000 description 14
- 238000005253 cladding Methods 0.000 description 8
- 230000002378 acidificating effect Effects 0.000 description 5
- 150000001450 anions Chemical class 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005115 demineralization Methods 0.000 description 2
- 230000002328 demineralizing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、火力発電プラントの復水の処理にお
ける混床式過脱塩方法に関し、特に従来品より
も含水率を増加させた陽イオン交換樹脂と陰イオ
ン交換樹脂を混合してなる混床式過脱塩方法に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mixed-bed excessive desalination method for treating condensate in thermal power plants, and in particular to a cation exchange method with a higher moisture content than conventional products. This invention relates to a mixed-bed over-desalination method in which a resin and an anion exchange resin are mixed.
従来から火力発電所では給水中の不純物を極力
低く抑えなければならないので、復水器からボイ
ラへ流入する復水を復水脱塩塔によつて浄化処理
し、高度に浄化した後、ボイラ給水として利用し
ている。
Conventionally, impurities in water supply at thermal power plants must be kept as low as possible. Therefore, the condensate flowing from the condenser to the boiler is purified in a condensate desalination tower, and after highly purified, the water supplied to the boiler is It is used as.
この復水脱塩塔は陰イオン交換樹脂と陽イオン
交換樹脂とが混合して充填された所謂混床式脱塩
塔であつて、復水中のイオン成分と懸濁固形成分
（クラツドと通称される）とをイオン交換及び吸
着によつて分離し、復水を浄化するものである。 This condensate demineralization tower is a so-called mixed bed demineralization tower packed with a mixture of anion exchange resin and cation exchange resin, and contains ionic components and suspended solid components (commonly known as cladding) in condensate. This method separates the condensate by ion exchange and adsorption to purify the condensate.
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、従来
含水率（45〜55％）のゲル型陽イオン交換樹脂と
ゲル型陰イオン交換樹脂を用いる方法、従来含
水率（45〜55％）のポーラス型陽イオン交換樹脂
とポーラス型陰イオン交換樹脂を用いる方法が提
案されていた。 The conventional method of mixing a cation exchange resin and an anion exchange resin to form a mixed bed is to use a gel type cation exchange resin and a gel type anion exchange resin with a water content (45 to 55%). Conventionally, a method using a porous cation exchange resin and a porous anion exchange resin with a water content (45 to 55%) has been proposed.
最近混床式過脱塩技術において復水からイオ
ン成分及びクラツドの分離効果のうち、クラツド
の分離効果を強化することにより、復水からボイ
ラへ持ち込まれるクラツドを低減しスケール生成
速度を抑制する傾向があり、前述の粒状イオン交
換樹脂を用いる方法では、クラツド捕捉能力がイ
オン交換樹脂とクラツドとの親和力の大きさに支
配されることから、現状の含水率の低いイオン交
換樹脂では比較的親水性のものを主とする現状の
クラツドの分離効果は小さく、装置の高度化要求
に十分な対応ができない。
Recently, in mixed bed over-desalination technology, there is a tendency to strengthen the effect of separating ionic components and crud from condensate, thereby reducing the amount of crud brought into the boiler from condensate and suppressing the rate of scale formation. However, in the method using the granular ion exchange resin described above, the ability to capture crud is controlled by the affinity between the ion exchange resin and the crud, so current ion exchange resins with low water content are relatively hydrophilic. The separation effect of the current cladding, which is mainly based on cladding, is small and cannot adequately meet the demands for more sophisticated equipment.
そこで、本発明は復水の処理操作において、ク
ラツドの分離能力の大きい混床式過脱塩方法を
提供することを目的とする。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a mixed-bed over-desalination method that has a large crud separation capacity in a condensate treatment operation.
本発明者らは、鋭意研究の結果、使用するイオ
ン交換樹脂の含水率を従来品のものより増加させ
たものを用いることによつて、本発明の目的を達
成しうることを見い出し、本発明を完成したもの
である。
As a result of intensive research, the present inventors have discovered that the object of the present invention can be achieved by using an ion exchange resin with a higher water content than conventional products. This is the completed version.
すなわち、本発明は、火力発電プラントの復水
（ボイラ給水）の処理の際に、粒状又は粉末状陽
イオン交換樹脂及び陰イオン交換樹脂からなる混
床によつて過脱塩する方法において、陽イオン
交換樹脂及び／又は陰イオン交換樹脂の含水率を
従来品のゲル型樹脂の標準値（45〜55％）よりも
増加させた範囲（55〜75％）の樹脂により混床を
形成し、火力発電プラントの復水処理時の懸濁不
純物の除去能力を強化させたことを特徴とする混
床式過脱塩方法にある。 That is, the present invention provides a method for excessive desalination using a mixed bed consisting of a granular or powdered cation exchange resin and an anion exchange resin when treating condensate water (boiler feed water) of a thermal power plant. A mixed bed is formed using a resin in which the water content of the ion exchange resin and/or anion exchange resin is increased (55 to 75%) compared to the standard value (45 to 55%) of conventional gel type resins, A mixed bed over-desalination method is characterized by enhanced ability to remove suspended impurities during condensate treatment in thermal power plants.
また、本発明は、火力発電プラントの復水（ボ
イラ給水）の処理の際に、粒状又は粉末状陽イオ
ン交換樹脂及び陰イオン交換樹脂からなる混床に
よつて過脱塩する方法において、従来品のイオ
ン交換樹脂による混床上層部に、従来品ゲル型樹
脂の標準値（45〜55％）よりも増加させた範囲
（55〜75％）の陽イオン交換樹脂を積層させた樹
脂床を形成し、火力発電プラントの復水処理時の
懸濁不純物の除去能力を強化させたことを特徴と
する混床式過脱塩方法にもある。 Furthermore, the present invention provides a method for excessive desalination using a mixed bed consisting of a granular or powdered cation exchange resin and an anion exchange resin when treating condensate water (boiler feed water) of a thermal power plant. In the upper layer of the product's mixed bed of ion exchange resin, a resin bed is laminated with a cation exchange resin in an increased range (55 to 75%) compared to the standard value (45 to 55%) of conventional gel type resins. There is also a mixed-bed over-desalination method characterized by enhanced ability to remove suspended impurities during condensate treatment in thermal power plants.
次に、本発明を従来技術と対比しながら更に詳
しく説明する。 Next, the present invention will be explained in more detail while comparing it with the prior art.
第１図は、強酸性陽イオン交換樹脂の含水率を
横軸に、樹脂の破砕強度を縦軸に示した含水率と
破砕強度の関係を表したグラフであり、これによ
れば、含水率を増加させるほど、樹脂の破砕強度
は低下し、これは、強塩基性陰イオン交換樹脂で
も同様の傾向が見られる。 Figure 1 is a graph showing the relationship between water content and crushing strength, with the horizontal axis representing the water content of a strongly acidic cation exchange resin and the vertical axis representing the crushing strength of the resin. As the value increases, the crushing strength of the resin decreases, and a similar tendency is observed even with strongly basic anion exchange resins.
第２図は強酸性陽イオン交換樹脂の含水率を横
軸に、総交換容量を縦軸に表わしたものであり、
これによれば含水率を増加させるほど総交換容量
は低下する。第３図は強塩基性陰イオン交換樹脂
の含水率と総交換容量の関係であり、第２図と同
様の傾向が見られる。 Figure 2 shows the water content of a strongly acidic cation exchange resin on the horizontal axis and the total exchange capacity on the vertical axis.
According to this, the total exchange capacity decreases as the water content increases. FIG. 3 shows the relationship between the water content and total exchange capacity of strongly basic anion exchange resins, and the same tendency as in FIG. 2 can be seen.
以上より、イオン交換樹脂の含水率を増加させ
ることにより、破砕強度、総交換容量等の性質が
劣化する傾向にあり、実運用の際の含水率は、ク
ラツド分離効果と過脱塩操作時に必要なその他
の諸性質の限界値を伴せて決める必要があり、本
発明においては、陽イオン交換樹脂及び陰イオン
交換樹脂の含水率55〜75％望ましくは60〜70％の
範囲にすることが適当と考えられる。 From the above, by increasing the water content of ion exchange resin, properties such as crushing strength and total exchange capacity tend to deteriorate. In the present invention, the water content of the cation exchange resin and anion exchange resin should be set in the range of 55 to 75%, preferably 60 to 70%. considered appropriate.
以下に、実施例を記載するが、本発明はこれら
の実施例に限定されるものではない。
Examples are described below, but the present invention is not limited to these examples.
実施例 １
陽イオン交換樹脂の含水率を変化させて、クラ
ツド分離効果を単床ミニカラム試験及び混床実機
長カラム試験により従来の過脱塩操作と比較す
る。Example 1 The water content of the cation exchange resin is varied and the crud separation effect is compared with a conventional over-desalination operation through a single-bed mini-column test and a mixed-bed actual length column test.
（単床ミニカラム試験）
試験条件
第４図の試験装置を使用し、原水を原水入口１
から充填カラム３を通して以下の試験条件により
試験を行なつた。(Single-bed mini-column test) Test conditions Using the test equipment shown in Figure 4, raw water is injected into raw water inlet 1.
A test was conducted under the following test conditions through a packed column 3.
樹脂仕様：強酸性ゲル型陽イオン交換樹脂（Ｈ
型）の含水率47，55，61，70％のものを使用
耐圧カラム：内径12mmφ×200mm
樹脂量：強酸性ゲル型陽イオン交換樹脂15ml
樹脂層高：133mm
通水線流速：LV＝108ｍ／ｈ
通水期間：各試験約２週間
試験結果
陽イオン交換樹脂のみの単床ミニカラム試験の
結果は第５図の通りである。第５図は横軸に含水
率を縦軸に含水率55％品を１としたときのクラツ
ド捕捉比率を示したグラフであり、これらよれば
含水率を増加させた方がクラツド分離効果が向上
することが確認できる。Resin specifications: Strongly acidic gel type cation exchange resin (H
Use a type) with a water content of 47, 55, 61, or 70% Pressure-resistant column: Internal diameter 12 mmφ x 200 mm Resin amount: Strong acid gel type cation exchange resin 15 ml Resin bed height: 133 mm Linear water flow velocity: LV = 108 m/ h Water flow period: Approximately 2 weeks for each test Test results The results of the single-bed mini-column test using only cation exchange resin are shown in Figure 5. Figure 5 is a graph showing the crud trapping ratio when the horizontal axis is the water content and the vertical axis is the product with a water content of 55% as 1. According to these graphs, increasing the water content improves the crud separation effect. It can be confirmed that
（混床実機長カラム試験）
試験条件
第６図の試験装置を使用して試験を行つた。第
６図において、原水入口１から導入された原水
は、樹脂充填カラム３で浄化されて主流量計４を
通り、一部はサンプリングラインに入り、フイル
タ５、流量計６、積算流量計７、導電率計８を経
て、ドレンライン９から排出される。２は洗浄用
純水の入口である。(Mixed bed actual machine length column test) Test conditions The test was conducted using the test equipment shown in Figure 6. In FIG. 6, raw water introduced from the raw water inlet 1 is purified by a resin-filled column 3, passes through a main flow meter 4, and part of it enters a sampling line, which includes a filter 5, a flow meter 6, an integrated flow meter 7, It passes through a conductivity meter 8 and is discharged from a drain line 9. 2 is an inlet for pure water for cleaning.
試験は以下の試験条件により行なつた。 The test was conducted under the following test conditions.
樹脂仕様：強酸性ゲル型陽イオン交換樹脂（Ｈ
型）の含水率47，55，61，70％のもの並びに従
来含水率の強塩基性ゲル型陰イオン交換樹脂
（OH型）を組み合わせて混床状態で使用
樹脂量：陽イオン／陰イオン樹脂比＝1.66／１で
層高90cm相当分（約２）を混合して充填
通水線流速：LV＝108ｍ／ｈ
通水期間：２週間
試験結果
陰イオン交換樹脂は従来含水率品を用い、陽イ
オン交換樹脂の含水率を変化させた混床による混
床実機長カラム試験の結果は第７図の通りであ
り、これによれば陽イオン交換樹脂の含水率を増
加させた方がクラツド分離効果（DF値）が向上
することが確認できた。なお、第７図は、陽イオ
ン交換樹脂の含水率を変えた場合の含水率とDF
値の関係（ここでDF値とは、入口クラツド濃
度／出口クラツド濃度（ppb）を表わす）を示す
グラフである。Resin specifications: Strongly acidic gel type cation exchange resin (H
Amount of resin used in a mixed bed state by combining strong basic gel type anion exchange resin (OH type) with water content of 47, 55, 61, 70% (type) and conventional water content: cation/anion resin Ratio = 1.66/1 and fill with an amount equivalent to 90cm bed height (approx. Figure 7 shows the results of a mixed-bed actual length column test using mixed beds with varying water content of the cation exchange resin, which shows that increasing the water content of the cation exchange resin results in better cladding separation. It was confirmed that the effect (DF value) was improved. In addition, Figure 7 shows the water content and DF when the water content of the cation exchange resin is changed.
This is a graph showing the relationship between values (here, DF value represents inlet crud concentration/outlet crud concentration (ppb)).
以上の試験結果は、いずれも陽イオン交換樹脂
の含水率を変化させたものであり、本発明の過
脱塩方法におけるクラツド分離効果は従来の過
脱塩方法よりも大巾に優れていることが確認さ
れ、実用上、極めて有利な方法といえる。 The above test results were obtained by changing the water content of the cation exchange resin, and it was found that the crud separation effect of the over-desalination method of the present invention is significantly superior to that of the conventional over-desalination method. was confirmed, and can be said to be an extremely advantageous method in practice.
実施例 ２
次に、本発明のもう一つの過脱塩方法である
陰イオン交換樹脂の含水率を変化させた場合のク
ラツド分離効果を単床ミニカラム試験により、従
来の過脱塩操作と比較する。Example 2 Next, the crust separation effect when changing the water content of the anion exchange resin, which is another over-desalination method of the present invention, is compared with the conventional over-desalination operation using a single-bed mini column test. .
試験条件
第４図の試験装置を使用し、以下の試験条件に
より試験を行なつた。 Test Conditions The test was conducted using the test apparatus shown in Figure 4 under the following test conditions.
Γ樹脂仕様：強塩基性ゲル型陰イオン交換樹脂
（OH型）の含水率46，50，56，71％のもの
を使用
Γ樹脂量：15ml
Γ通水線流速：LV＝108ｍ／ｈ
Γ通水期間：約２週間
試験結果
陰イオン交換樹脂のみの単床ミニカラム試験の
結果は第８図の通りであり、これによれば、含水
率を増加させた方がクラツド分離効果が向上する
ことが確認できた。なお第８図は強塩基性ゲル型
陰イオン交換樹脂の含水率と含水率55％品を１と
したときのクラツド捕捉比率の関係を示すグラフ
である。Γ Resin specifications: Use strongly basic gel type anion exchange resin (OH type) with water content of 46, 50, 56, 71% Γ Resin amount: 15ml Γ Linear water flow velocity: LV = 108 m/h Γ through Water period: Approximately 2 weeks Test results The results of the single-bed mini-column test using only anion exchange resin are shown in Figure 8, which shows that increasing the water content improves the crud separation effect. It could be confirmed. FIG. 8 is a graph showing the relationship between the water content of a strongly basic gel-type anion exchange resin and the cladding capture ratio when a product with a water content of 55% is taken as 1.
以上の試験結果は、陰イオン交換樹脂の含水率
を変化させたものであり、一般に過脱塩操作に
おける陰イオン交換樹脂のクラツド分離効果に及
ぼす影響は、その性質上陽イオン交換樹脂に比較
して小さいが、特に陽イオン交換樹脂との混床に
よる相乗効果により、本発明の過脱塩方法にお
けるクラツド分離効果は、従来の方法よりも大巾
に優れていることが確認され、実用上極めて有利
な方法といえる。 The above test results were obtained by changing the water content of the anion exchange resin, and in general, the influence of anion exchange resin on the cladding separation effect during over-desalination operation is greater than that of cation exchange resin due to its nature. Although small, it has been confirmed that the crud separation effect of the over-desalination method of the present invention is significantly superior to that of conventional methods, particularly due to the synergistic effect of the mixed bed with the cation exchange resin, and is extremely advantageous in practice. This can be said to be a great method.
更に、本発明の過脱塩方法である
陽イオン交換樹脂及び陰イオン交換樹脂の含
水率を従来品よりも増加させた樹脂の混床によ
る過脱塩方法
陰イオン交換樹脂の含水率を従来品よりも増
加させた樹脂と、従来品の陽イオン交換樹脂の
混床による過脱塩方法
従来品イオン交換樹脂による混床の上層部
に、従来品よりも含水率を増加させた陽イオン
交換樹脂を積層させた樹脂床による過脱塩方
法
についても前述の結果より優れたクラツド分離効
果が推測されるが、最近実施した試験において優
れたクラツド分離効果が確認されており、いずれ
も実用上、極めて有利な方法と言える。 Furthermore, the over-desalination method of the present invention is an over-desalination method using a mixed bed of resins in which the water content of the cation exchange resin and anion exchange resin is increased compared to the conventional product. Over-desalination method using a mixed bed of resin with a higher water content than the conventional ion exchange resin and a cation exchange resin with a higher water content than the conventional product. It is assumed that the excessive desalination method using a resin bed laminated with a resin bed has an excellent crud separation effect based on the above results, but an excellent crud separation effect was confirmed in a recently conducted test, and both methods are extremely effective in practical use. This can be said to be an advantageous method.
本発明においては、従来の混床式過脱塩方法
に比較し、陰・陽イオン交換樹脂の含水率が高い
ため、親水性の高いクラツドとの親和力が高く、
クラツド分離効果が大きいことより過脱塩操作
に際し、よりクラツド濃度の低い高純度の水を得
ることができる。
In the present invention, compared to the conventional mixed bed over-desalination method, the anion/cation exchange resin has a high water content, so it has a high affinity with the highly hydrophilic cladding.
Since the crud separation effect is large, high purity water with a lower crud concentration can be obtained during excessive desalination.
第１図は強酸性ゲル型陽イオン交換樹脂の含水
率と破砕強度の関係を示すグラフであり、第２図
は陽イオン交換樹脂の含水率と総交換容量の関係
を示すグラフであり、第３図は強塩基性ゲル型陰
イオン交換樹脂の含水率と総交換容量の関係を示
すグラフであり、第４図は通水ミニカラム試験装
置の概略系統図であり、第５図は陽イオン交換樹
脂の含水率とクラツド分離能力の関係を示すグラ
フであり、第６図は混床実機長カラム試験装置の
概略系統図であり、第７図は陽イオン交換樹脂の
含水率とDF値の関係を表すグラフであり、第８
図は陰イオン交換樹脂の含水率とクラツドの捕捉
能の関係を表すグラフである。
１……原水入口、２……洗浄用純水入口、３…
…樹脂充填カラム、４……主流量計、５……フイ
ルタ、６……流量計、７……積算流量計、８……
導電率計、９……ドレンライン。
Figure 1 is a graph showing the relationship between water content and crushing strength of a strongly acidic gel type cation exchange resin, Figure 2 is a graph showing the relationship between water content and total exchange capacity of a cation exchange resin, and Figure 2 is a graph showing the relationship between water content and total exchange capacity of a cation exchange resin. Figure 3 is a graph showing the relationship between water content and total exchange capacity of a strongly basic gel-type anion exchange resin, Figure 4 is a schematic diagram of a water-flowing mini-column test device, and Figure 5 is a graph showing the relationship between water content and total exchange capacity of a strongly basic gel-type anion exchange resin. This is a graph showing the relationship between the moisture content of the resin and the crud separation ability, Figure 6 is a schematic diagram of the mixed bed actual length column test device, and Figure 7 is the relationship between the moisture content of the cation exchange resin and the DF value. This is a graph representing the eighth
The figure is a graph showing the relationship between the water content of the anion exchange resin and the trapping ability of the cladding. 1... Raw water inlet, 2... Pure water inlet for cleaning, 3...
... Resin-filled column, 4 ... Main flow meter, 5 ... Filter, 6 ... Flow meter, 7 ... Integrating flow meter, 8 ...
Conductivity meter, 9...Drain line.
Claims (1)
理の際に、粒状又は粉末状陽イオン交換樹脂及び
陰イオン交換樹脂からなる混床によつて過脱塩
する方法において、陽イオン交換樹脂及び／又は
陰イオン交換樹脂の含水率を従来品のゲル型樹脂
の標準値（45〜55％）よりも増加させた範囲（55
〜75％）の樹脂により混床を形成し、火力発電プ
ラントの復水処理時の懸濁不純物の除去能力を強
化させたことを特徴とする混床式過脱塩方法。 ２ 火力発電プラントの復水（ボイラ給水）の処
理の際に、粒状又は粉末状陽イオン交換樹脂及び
陰イオン交換樹脂からなる混床によつて過脱塩
する方法において、従来品のイオン交換樹脂によ
る混床上層部に、従来品ゲル型樹脂の標準値（45
〜55％）よりも含水率を増加させた範囲（55〜75
％）の陽イオン交換樹脂を積層させた樹脂床を形
成し、火力発電プラントの復水処理時の懸濁不純
物の除去能力を強化させたことを特徴とする混床
式過脱塩方法。[Claims] 1. A method for excessive desalination using a mixed bed consisting of a granular or powdered cation exchange resin and an anion exchange resin when treating condensate water (boiler feed water) of a thermal power plant, The range in which the water content of the cation exchange resin and/or anion exchange resin is increased from the standard value (45 to 55%) of conventional gel type resins (55%)
A mixed-bed excessive desalination method characterized by forming a mixed bed with a resin containing up to 75% of resin, thereby enhancing the ability to remove suspended impurities during condensate treatment in thermal power plants. 2. When treating condensate water (boiler feed water) in thermal power plants, in a method of excessive desalination using a mixed bed consisting of granular or powdered cation exchange resins and anion exchange resins, conventional ion exchange resins are used. The standard value of conventional gel type resin (45
~55%) with increased moisture content (55~75
A mixed bed excessive desalination method characterized by forming a resin bed in which cation exchange resins (%) are laminated to enhance the ability to remove suspended impurities during condensate treatment in thermal power plants.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28127988A JPH02131189A (en) | 1988-11-09 | 1988-11-09 | Removal process for suspended impurities by mixed bed type filter desalting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28127988A JPH02131189A (en) | 1988-11-09 | 1988-11-09 | Removal process for suspended impurities by mixed bed type filter desalting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02131189A JPH02131189A (en) | 1990-05-18 |
| JPH0445232B2 true JPH0445232B2 (en) | 1992-07-24 |
Family
ID=17636858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28127988A Granted JPH02131189A (en) | 1988-11-09 | 1988-11-09 | Removal process for suspended impurities by mixed bed type filter desalting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02131189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012137956A1 (en) * | 2011-04-06 | 2012-10-11 | 株式会社神戸製鋼所 | Solid fuel molding method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387348A (en) * | 1990-11-09 | 1995-02-07 | Ebara Corporation | Method of mixed-bed filtration and demineralization with ion-exchange resins |
| JPH0726784B2 (en) * | 1992-09-25 | 1995-03-29 | 岩谷産業株式会社 | Simple liquid nitrogen production equipment |
-
1988
- 1988-11-09 JP JP28127988A patent/JPH02131189A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012137956A1 (en) * | 2011-04-06 | 2012-10-11 | 株式会社神戸製鋼所 | Solid fuel molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02131189A (en) | 1990-05-18 |
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