CN1024126C - Method for boron reduction in high-concentrated brine by resin - Google Patents
Method for boron reduction in high-concentrated brine by resin Download PDFInfo
- Publication number
- CN1024126C CN1024126C CN88107627A CN88107627A CN1024126C CN 1024126 C CN1024126 C CN 1024126C CN 88107627 A CN88107627 A CN 88107627A CN 88107627 A CN88107627 A CN 88107627A CN 1024126 C CN1024126 C CN 1024126C
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- China
- Prior art keywords
- boron
- resin
- bittern
- bed
- brine
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- 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 - Fee Related
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- Treatment Of Water By Ion Exchange (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to a method for reducing boron in high-concentrated brine by resin. High-concentrated brine is treated by direct boron absorption on a bed by salt type chelate boron selective ion exchange resin with a large pore diameter, and acquired low boron or ultra-low boron brine is a main raw material for preparing magnesia and electrolyzing metal magnesium. After being regenerated by diluted acid, boron loading resin is repeatedly used. Desorbed boron is recovered by the method of the evaporating concentration of a desorbing solution. The method opens up a new path for the comprehensive utilization of high-concentration brine.
Description
What the present invention relates to is a kind ofly to make high-concentrated brine fall the method for boron with resin.Highly-purity magnesite, MAGNESIUM METAL generally can be extracted from bittern or seawater.Because boron is deleterious to the finished product magnesia, MAGNESIUM METAL, therefore, is used to produce the bittern of highly-purity magnesite, MAGNESIUM METAL or seawater and will makes to fall boron and handle.
In known technical literature " On the Development of Superior MgO Clinkers " and " purification of magnesium chloride bittern-Tuo boron ", reported the method for from seawater and boracic salts solution, falling boron, MgCl
2302 grams per liters, B
2O
30.2 the boracic salts solution of the following concentration of grams per liter can be in this way.Work as MgCl
2When content is higher than 302 grams per liters, there is throw out to assemble when falling boron, can not realizes normal running.
The present invention is directed to MgCl
2Content is greater than 302 grams per liters, until MgCl
2Up to 431 grams per liters, B
2O
31.0 falling in the bittern of grams per liter, handles boron.
The basic structure such as the accompanying drawing 1 of chelating wide aperture boron selective ion exchange resin (or claiming effects of boron resin), this is a kind of strong acid weak base formula salt, hydrolysis easily in the aqueous solution is so claim free basic resin.If directly boron is fallen in the bromine waste liquid in dense salt lake brine of height or sea salt chemical plant with this kind resin, a large amount of hydroxide ions that dissociate out on the resin combine the gluey magnesium hydrate precipitate thing of formation and stick to bittern can't be passed through with magnesium ion in the bittern.
The present invention handles the resin of said structure with a certain amount of 0.8～1.3 mol sulfuric acid or hydrochloric acid, makes it to be converted into sulfate type or hydrochloride type resin, throw out can not occur in inhaling the boron process.
Adopt two resin beds in the technological process device of the present invention, see that accompanying drawing 2.2 and 3 can work independently and can tandem working, can obtain stable low boron or ultralow boron bittern like this, and can improve the utilization ratio of resin.Operating process is at first high-concentrated brine to be entered 2 by 4 to work independently.Require standard when (promptly surpassing the leakage point) when boron content in the 5 effusive bittern surpasses, go here and there upward 3, formation 2+3 works simultaneously by 5 outflows.Cut away 2 and regenerate, 3 work independently.Next connect 2, form 3+2 and work simultaneously, cut away 3 regeneration then, 2 work independently.So circulation repeatedly.The bed that cuts away will feed flushing 2(or 3 from 8 with big current) interior unnecessary bittern, washing lotion flows out by 9, cleans back regeneration.
During regeneration, regenerator feeds 2(or 3 by 6), boracic is freed liquid and is flowed out from 7.Be right after with water and feed by 9, eject used acid amount for acid.Subsequently can be by 9(or 8) wash unnecessary acid with big current, washing lotion is by 8(or 9) flow out.
The existence of bubble causes bittern short circuit influence to fall effect of boron in the resin bed in order to overcome, and the present invention takes the water law resin to become the bed method, is about to the good resin of immersion treatment and inserts in the water-filled resin bed together with water, makes it form resin bed in water.In the washing of resin bed, inhale in boron, the regenerative process and do not make resin expose liquid level.
Because handled high-concentrated brine ratio weighs 1.33, if make bittern from top to bottom (following current) enter resin bed, then original liquid is difficult to discharge in the bed, and can make the bittern dilution influence quality product.The present invention adopts from bottom to top (adverse current) method of entering resin bed of bittern, and this problem is resolved.
Bittern flows through the speed of resin bed, and (the bittern scale that passes through with unit time, unit surface shows promptly centimetre
3/ (divide centimetre
2)) be the significant parameter that falls boron technology.Certain resin bed height is worked under this flow velocity to best bittern flow velocity should be arranged, the suction boron capacity height of resin, and the qualified bittern quantity of output is big.
It is 0.8～1.0 centimetre that the present invention drafts the speed of bittern by resin bed
3/ (divide centimetre
2).
The present invention requires the acidity of the acid high-concentrated brine of sea salt chemical plant gained is adjusted to pH=3.5～5.
The present invention inhales regeneration behind the boron to resin, feeds with 1/2 bittern flow velocity (or flow) with 0.8～1.3 mol sulfuric acid of 0.5 left and right sides bed volume or hydrochloric acid and carries a boron resin bed, washes unnecessary acid with water purification then, till pH=5～6 of effluent liquid.
Separate the boron of taking off from resin and can concentrate the method recovery of freeing liquid, also can discharge through neutralizing treatment with heating evaporation.
Embodiment: will contain MgCl
2350～431 grams per liters, B
2O
30.6～1.0 grams per liters, pH=3.5～5 bittern, from the bottom with 0.8～1.0 centimetre
3/ (divide centimetre
2) flow velocity feed in single resin bed (50 millimeters of diameters, high 1000 millimeters, 1000 milliliters of interior dress resins).Effusive low boron bittern amount is: B
2O
315 liters of the bittern amounts of 0.1 grams per liter are put in leakage; 12 liters of the bittern amounts of 0.05 grams per liter are put in leakage; 9 liters of the bittern amounts of 0.025 grams per liter are put in leakage.When the leakage point of effluent liquid surpassed set quota, resin bed quit work.Enter bed flushing resin with big current by the top with water purification, unnecessary bittern is washed off regenerated.
Regenerator is with 500～700 milliliters of 1.04 mol sulfuric acid or hydrochloric acid, flows into resin bed with 1/2 of bittern flow velocity by the bottom, again with the interior unnecessary acid (can positive and negatively wash) of big current flushing resin bed, till effluent liquid pH=5～6.
Claims (4)
1, a kind of method of falling boron with plastic resin treatment bittern, it is characterized in that: with 0.8-1.3 mol sulfuric acid or salt acid treatment free alkali formula chelating wide aperture boron selective ion exchange resin (or claiming effects of boron resin), make it to transform salify type resin, high-concentrated brine flows into resin bed and inhales boron; Carry boron resin and with 0.8-1.3 mol sulfuric acid or hydrochloric acid flushing boron is broken away from, use repeatedly after the resin regeneration, boron can reclaim.
2, method according to claim 1 is characterized in that: bittern can be the bromine waste liquid or the salt lake brine in sea salt chemical plant, MgCl
2Content 350-431 grams per liter, B
2O
30.6-1.0 grams per liter.
3, method according to claim 1 is characterized in that: adopt resin and water blended water law dress bed method, and resin is not exposed in the air in the entire operation process.
4, method according to claim 1 is characterized in that: bittern is flowed into by the bottom of resin bed, and flow velocity is 0.8-1.0 centimetre
3/ (divide centimetre
2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88107627A CN1024126C (en) | 1988-11-02 | 1988-11-02 | Method for boron reduction in high-concentrated brine by resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88107627A CN1024126C (en) | 1988-11-02 | 1988-11-02 | Method for boron reduction in high-concentrated brine by resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1042319A CN1042319A (en) | 1990-05-23 |
| CN1024126C true CN1024126C (en) | 1994-04-06 |
Family
ID=4834713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88107627A Expired - Fee Related CN1024126C (en) | 1988-11-02 | 1988-11-02 | Method for boron reduction in high-concentrated brine by resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1024126C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445238A (en) * | 2017-07-28 | 2017-12-08 | 江苏昌吉利新能源科技有限公司 | A kind of resin boron removal method of the bittern containing lithium |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994748A (en) * | 2012-12-27 | 2013-03-27 | 西安蓝晓科技新材料股份有限公司 | Fixed-bed adsorption method for removing boron from salt lake magnesium chloride brine |
| CN106167267B (en) * | 2015-05-21 | 2019-01-04 | 中国石油化工集团公司 | A kind of method of boron in separation and Extraction boron-containing solution |
| CN114772792B (en) * | 2022-05-23 | 2023-06-23 | 北部湾大学 | Seawater treatment method with synergistic effect of electrostatic adsorption and ultrasonic waves |
-
1988
- 1988-11-02 CN CN88107627A patent/CN1024126C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445238A (en) * | 2017-07-28 | 2017-12-08 | 江苏昌吉利新能源科技有限公司 | A kind of resin boron removal method of the bittern containing lithium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1042319A (en) | 1990-05-23 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |