CN101791581A - Recovery liquid for ion exchange resin polluted by iron - Google Patents
Recovery liquid for ion exchange resin polluted by iron Download PDFInfo
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- CN101791581A CN101791581A CN201010151805A CN201010151805A CN101791581A CN 101791581 A CN101791581 A CN 101791581A CN 201010151805 A CN201010151805 A CN 201010151805A CN 201010151805 A CN201010151805 A CN 201010151805A CN 101791581 A CN101791581 A CN 101791581A
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- iron
- ion exchange
- exchange resin
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- resin
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Abstract
The invention discloses recovery liquid for ion exchange resin polluted by iron, which comprises the following materials by weight percent: 20-30 percent of acid substance, 10-20 percent of inorganic salt, 40-50 percent of reducing agent and 10-20 percent of disodium ethylene diamine tetraacetate (EDTA). In the material components, the acid substance is hydrochloric acid; the inorganic salt is sodium chloride; the reducing agent is hydroxylamine hydrochloride, orthophenanthroline or a mixture of the hydroxylamine hydrochloride and the orthophenanthroline; and the complexing agent is EDTA or sodium salt thereof. The recovery liquid has the advantages of little stimulation to a human body, good recovery effect, and the like and can effectively carry out recovery to the iron pollution of the resin.
Description
Technical field
The present invention relates to a kind of resuscitation fluid, particularly be the resuscitation fluid that cationic ion-exchange resin that ion-exchanger uses is subjected to iron pollution.
Background technology
The widely used ion-exchange salt removing system of power plant water treatment, it is cation exchange-anion exchange-hybrid ionic exchange, ion exchange resin (abbreviation resin) is the key job medium in this water cleaning systems, and it has determined the desalting system water quality and the cycle of operation.In the use of resin, the effluent quality variation may appear, and operating capacity descends, problems such as cycle of operation shortening.The common cause that produces the problems referred to above is the pollution that resin is subjected to objectionable impurities (as iron compound, organic matter), resin " poisoning " accident takes place, and resin poison is the most common with iron " poisoning " phenomenon.
The resin of process iron " poisoning " can recover its exchange capacity by suitable processing, and the iron of removing in the resin is called " recovery " or " detoxifcation ", method for resuscitation hydrochloric acid recovery method of using always in the actual production and reduction recovery method.Hydrochloric acid recovery is effective to slight iron pollution (as pollution rate 10% below), and the heavier resin of pollution level is wanted fully to be recovered and the concentration of hydrochloric acid must be increased to more than 10%, and the expense that had both increased like this is the interior anticorrosive coat of fragile exchange also; Be added with sodium sulfite in the resuscitation fluid of reduction recovery method, and sodium sulfite can generate a large amount of sulfur dioxide gas with hydrochloric acid reaction in actual production, not only polluting simultaneously has harm more by force to human body.
Owing to can work the mischief to human body and equipment, therefore be necessary to develop a kind of method for resuscitation of process resin iron pollution of renewal in the said method, can satisfy resuscitation effect, healthy and equipment does not work the mischief to the operator again.
Summary of the invention
The object of the present invention is to provide good, easy to use, the eco-friendly a kind of resuscitation fluid that is used for the ion exchange resin of polluted by iron of a kind of treatment effect.
For achieving the above object, technical solution of the present invention is: it is made up of the raw material of substance of following weight percentage:
Acid 20%-30%,
Inorganic salts 10%-20%,
Reducing agent 40%-50%,
Disodium ethylene diamine tetraacetate EDTA 10%-20%.
In the above-mentioned substance raw material components, said acid is a hydrochloric acid; Said inorganic salts are sodium chloride; Said reducing agent is hydroxylamine hydrochloride, adjacent Fei Luolin or both mixtures; Complexing agent is EDTA or its sodium salt.
The action principle of method for resuscitation of the present invention is: by reducing substances with the Fe that exists with ionic state on the resin
3+Be reduced into more diffluent Fe
2+, and the latter is littler than the former with the affinity of resin, makes Fe
3+Submit to change from resin and be more prone to.And the EDTA that adds can make iron complexing in the resin of pollution, reduces regenerant consumption, shortens the recovery time.
Compare with existing similar technology, the advantage of this method is: 1. adopt this method to have the operating environment close friend, to the bland advantage of human body; 2. the resuscitation effect of this method is good, and it is lasting to render a service.
The specific embodiment
Embodiment 1:
Get 20 parts of hydrochloric acid, 10 parts in sodium chloride, 10 parts of hydroxylamine hydrochlorides, EDTA1 part, mix, promptly constitute resuscitation fluid.This resuscitation fluid is handled the resin that pollutes by exchange column, and recovery efficient reaches 92.30%.
Embodiment 2:
Get 10 parts of hydrochloric acid, 10 parts in sodium chloride, 10 parts of hydroxylamine hydrochlorides, EDTA1 part, mix, promptly constitute resuscitation fluid.This resuscitation fluid is handled the resin that pollutes by exchange column, and recovery efficient reaches 93.37%.
Embodiment 3:
Get 15 parts of hydrochloric acid, 10 parts in sodium chloride, 10 parts of hydroxylamine hydrochlorides, EDTA1.5 part, mix, promptly constitute resuscitation fluid.This resuscitation fluid is handled the resin that pollutes by exchange column, and recovery efficient reaches 95.22%.
Claims (4)
1. a resuscitation fluid that is used for the ion exchange resin of polluted by iron is characterized in that, it is made up of the raw material of substance of following weight percentage:
Acid 20%-30%,
Inorganic salts 10%-20%,
Reducing agent 40%-50%,
Disodium ethylene diamine tetraacetate EDTA 10%-20%.
2. ion exchange resin resuscitation fluid according to claim 1 is characterized in that, said acid is a hydrochloric acid.
3. ion exchange resin resuscitation fluid according to claim 1 is characterized in that, said inorganic salts are sodium chloride.
4. ion exchange resin resuscitation fluid according to claim 1 is characterized in that, said reducing agent is hydroxylamine hydrochloride, adjacent Fei Luolin or both mixtures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010151805A CN101791581A (en) | 2010-04-21 | 2010-04-21 | Recovery liquid for ion exchange resin polluted by iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010151805A CN101791581A (en) | 2010-04-21 | 2010-04-21 | Recovery liquid for ion exchange resin polluted by iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101791581A true CN101791581A (en) | 2010-08-04 |
Family
ID=42584626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010151805A Pending CN101791581A (en) | 2010-04-21 | 2010-04-21 | Recovery liquid for ion exchange resin polluted by iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101791581A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631955A (en) * | 2012-05-04 | 2012-08-15 | 哈尔滨工业大学 | Restoration method for removing iron pollution of anion exchange resin and restoration drug formula |
| CN102658217A (en) * | 2012-05-08 | 2012-09-12 | 哈尔滨工业大学 | Method for recovering anion exchange resin polluted by organic matters and recovery medicine |
| CN104743638A (en) * | 2015-03-11 | 2015-07-01 | 董明 | Resuscitation treatment equipment for iron poisoning of cation exchange resin |
-
2010
- 2010-04-21 CN CN201010151805A patent/CN101791581A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631955A (en) * | 2012-05-04 | 2012-08-15 | 哈尔滨工业大学 | Restoration method for removing iron pollution of anion exchange resin and restoration drug formula |
| CN102658217A (en) * | 2012-05-08 | 2012-09-12 | 哈尔滨工业大学 | Method for recovering anion exchange resin polluted by organic matters and recovery medicine |
| CN102658217B (en) * | 2012-05-08 | 2014-02-05 | 哈尔滨工业大学 | Method for recovering anion exchange resin polluted by organic matters and recovery medicine |
| CN104743638A (en) * | 2015-03-11 | 2015-07-01 | 董明 | Resuscitation treatment equipment for iron poisoning of cation exchange resin |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100804 |