CN101941766B - Method for decoloring and refining master sauce - Google Patents
Method for decoloring and refining master sauce Download PDFInfo
- Publication number
- CN101941766B CN101941766B CN2009100696869A CN200910069686A CN101941766B CN 101941766 B CN101941766 B CN 101941766B CN 2009100696869 A CN2009100696869 A CN 2009100696869A CN 200910069686 A CN200910069686 A CN 200910069686A CN 101941766 B CN101941766 B CN 101941766B
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- old halogen
- minutes
- calcium hypochlorite
- sauce
- decolouring
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a method for decoloring and refining master sauce, which aims to overcome the shortcomings that the whiteness of products cannot meet requirements, and the like in the production of fine magnesium salt products by taking the master sauce as a raw material. The method is characterized in that: the master sauce is decolored and filtered by the following steps of: adding hydrogen peroxide with the stirring of the master sauce for oxidizing reaction; adjusting the pH value of the oxidized master sauce to be between 6.7 and 7; dissolving calcium hypochlorite solids with water to obtain 10 percent calcium hypochlorite solution, wherein the weight ratio of the water to the calcium hypochlorite is 9:1; uniformly mixing the calcium hypochlorite solution and sodium hypochlorite according to the volume ratio of 1:1 to prepare a decolorant; and adding the prepared decolorant with the stirring of the master sauce with the adjusted pH value, and introducing the decolored master sauce into an inorganic membrane ultrafilter by using a pump for filtration and impurity removal.
Description
Technical field:
The present invention relates to the decolouring and the purified method of the old halogen of by-product in a kind of salt chemical engineering production.
Background technology:
After being products such as raw material production sea salt, Repone K, bromine with the seawater, the staple in the bittern of institute's by-product is a magnesium chloride, and it is acid that this bittern is, and is commonly called as to be old halogen.In salt chemical engineering is produced, mainly produce powder shape or sheet magnesium chloride product with old halogen at present, this product uses mainly as the raw material of building materials.Because the large amount of organic impurities and the iron ion that contain in the old halogen; And make old halogen color is khaki color; When using old halogen to produce purified magnesium chloride, edible magnesium chloride, or when utilizing old halogen for magnesium salts fine product such as raw material production Marinco H, magnesiumcarbonate, this color is not if handle; The product colour that will cause producing turns to be yellow, and does not reach the requirement of user to product whiteness; When especially utilizing old halogen to produce the flame retardant of magnesium hydroxide product,, can influence the insulativity of the superpolymer product that adds fire retardant because iron ion exceeds standard.If therefore utilize old halogen to be raw material production magnesium salts fine product, just must old halogen be decoloured, remove iron ion and solid impurity in the bittern, make it to become water white bittern.
Summary of the invention:
It is raw material that the present invention has overcome with old halogen, and product whiteness does not reach shortcomings such as requirement when producing the magnesium salts fine product, provides a kind of to old halogen decolouring and purified method.
Technical scheme of the present invention is: a kind of old halogen decolouring and purified method are that old halogen decolour and filters, and the employing following steps are carried out:
Add ydrogen peroxide 50 when old halogen is stirred and carry out oxidizing reaction, the volume that institute adds ydrogen peroxide 50 is 0.2% (v/v) of old halogen, and the stirring oxidization time is no less than 60 minutes;
The pH value of old halogen after the oxidation is adjusted between 6.7～7, continues to stir 10 minutes;
The ratio that in water and Losantin weight ratio is 9: 1 obtains 10% calcium hypochlorite solution with water dissolution Losantin solid, with 1: 1 by volume uniform mixing of chlorine bleach liquor of calcium hypochlorite solution and 10%, processes SYNTHETIC OPTICAL WHITNER again;
The old halogen that regulates the pH value is added the SYNTHETIC OPTICAL WHITNER of preparation when stirring, the volume that institute adds SYNTHETIC OPTICAL WHITNER is 0.5% (v/v) of old halogen, bleaches churning time and is not less than 30 minutes, and then left standstill 120 minutes;
With being pumped into mineral membrane ultra-fine filter filtering and impurity removing, the mineral membrane aperture is 1～6 μ m with the old halogen after the decolouring, and filter pressure is 0.15～0.25Mpa.
According to above technical scheme, in regulating the process of brine ph,,, can add n-Octanol or isooctyl alcohol is cut bubble if floating above the aqueous salt brine have a large amount of foams, consumption is V
00.01%.
According to above technical scheme, the mineral membrane ultra-fine filter need carry out pickling with washings.
The invention has the beneficial effects as follows:
1, old halogen through decolouring after, become water white bittern, the whiteness of the product that goes out as raw material production has reached standard-required.
2, removed iron ion in the old halogen, the flame retardant of magnesium hydroxide product that goes out as raw material production is after adding the superpolymer product to, and the insulativity of superpolymer product obviously improves.
3, removed various solid impurities in the old halogen, water quality be improved significantly, be beneficial to the carrying out of production and the lifting of quality product.
Embodiment:
Below in conjunction with preferred embodiment, to describing in detail as follows according to embodiment provided by the invention:
A kind of old halogen decolouring and purified method are that old halogen decolour and filters, and the employing following steps are carried out:
Get the old halogen of raw material, contain magnesium chloride 30%.The ydrogen peroxide 50 that adds 30% (w/w) when old halogen is stirred carries out oxidizing reaction, and the volume that institute adds ydrogen peroxide 50 is 0.2% (v/v) of old halogen, and the stirring oxidization time is no less than 60 minutes.
The pH value of old halogen after the mensuration oxidation as less than 6, then adds 4-8mol/L (160-320g/L) sodium hydroxide solution of preparing and is adjusted to till 6.7～7, continues to stir 10 minutes; If floating above the aqueous salt brine have a large amount of foams, just can add (different) octanol and cut bubble, consumption is V
0About 0.01%.
With water dissolution Losantin solid (water and Losantin weight ratio are 9: 1), the residue of bottom is removed in the dissolving back, obtains 10% calcium hypochlorite solution; With 1: 1 by volume uniform mixing of calcium hypochlorite solution and 10% (w/w) chlorine bleach liquor of 10%, process SYNTHETIC OPTICAL WHITNER again.
The old halogen that regulates the pH value is added the SYNTHETIC OPTICAL WHITNER of preparation when stirring, the volume that institute adds SYNTHETIC OPTICAL WHITNER is 0.5% (v/v) of old halogen, bleaches churning time and is not less than 30 minutes, and then left standstill 120 minutes.
With being pumped into mineral membrane ultra-fine filter filtering and impurity removing, the mineral membrane aperture is (1-6 μ m) with the old halogen after the decolouring, and filter pressure is 0.15-0.25Mpa.
The discharging of bittern in the mineral membrane ultra-fine filter is clean, the washings of the sulfur acid 4%-5% for preparing is sent in the mineral membrane ultra-fine filter circulation cleaning 20 minutes with anticorrosion impeller pump; After the pickling, washings is discharged, add plain boiled water washing 10 minutes again; Washing water dischargings is clean, open pressurized air, blow closes compression air after 5 minutes with pressurized air, prepare filtration feed once more.
Bittern after filtering is delivered in the storage tank, and the accurate measurement volume.Based on going on foot bittern concentration and the volume that production needs down, add Purified Water then, prepare raw brine.
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention is to any simple modification that above embodiment did, and equivalent variations and modification all still belong in the scope of technical scheme of the present invention.
Claims (3)
1. old halogen decolouring and purified method is characterized in that old halogen decolour and filters, and the employing following steps are carried out:
Add ydrogen peroxide 50 when old halogen is stirred and carry out oxidizing reaction, the volume that institute adds ydrogen peroxide 50 is 0.2% (v/v) of old halogen, and the stirring oxidization time is no less than 60 minutes;
The pH value of old halogen after the oxidation is adjusted between 6.7～7, continues to stir 10 minutes;
The ratio that in water and Losantin weight ratio is 9: 1 obtains 10% calcium hypochlorite solution with water dissolution Losantin solid, with 1: 1 by volume uniform mixing of chlorine bleach liquor of calcium hypochlorite solution and 10%, processes SYNTHETIC OPTICAL WHITNER again;
The old halogen that regulates the pH value is added the SYNTHETIC OPTICAL WHITNER of preparation when stirring, the volume that institute adds SYNTHETIC OPTICAL WHITNER is 0.5% (v/v) of old halogen, bleaches churning time and is not less than 30 minutes, and then left standstill 120 minutes;
With being pumped into mineral membrane ultra-fine filter filtering and impurity removing, the mineral membrane aperture is 1～6 μ m with the old halogen after the decolouring, and filter pressure is 0.15～0.25Mpa.
2. a kind of old halogen decolouring according to claim 1 and purified method is characterized in that in the process of said adjusting brine ph,, if floating above the aqueous salt brine have a large amount of foams, can add n-Octanol or isooctyl alcohol is cut bubble, and consumption is V
00.01%.
3. a kind of old halogen decolouring according to claim 1 and purified method is characterized in that described mineral membrane ultra-fine filter need carry out pickling with washings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100696869A CN101941766B (en) | 2009-07-10 | 2009-07-10 | Method for decoloring and refining master sauce |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100696869A CN101941766B (en) | 2009-07-10 | 2009-07-10 | Method for decoloring and refining master sauce |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101941766A CN101941766A (en) | 2011-01-12 |
| CN101941766B true CN101941766B (en) | 2012-05-02 |
Family
ID=43434008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100696869A Expired - Fee Related CN101941766B (en) | 2009-07-10 | 2009-07-10 | Method for decoloring and refining master sauce |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101941766B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340900A (en) * | 2013-07-17 | 2013-10-09 | 银川高新区广煜科技有限公司 | Natural salt lake brine drop for treating rhinitis as well as preparation method and usage method of natural salt lake brine drop |
| CN105858963A (en) * | 2016-05-16 | 2016-08-17 | 中盐金坛盐化有限责任公司 | Method for removing iron ions from sodium sulfate type brine |
| CN108083296B (en) * | 2017-12-04 | 2019-07-30 | 大连盐化集团有限公司 | A kind of old halogen high-efficient decolorizing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3980536A (en) * | 1975-04-11 | 1976-09-14 | Nl Industries, Inc. | Process for producing magnesium metal from magnesium chloride brines |
| US4425314A (en) * | 1981-09-09 | 1984-01-10 | Gattys Franz J | Method for the manufacture of metal oxide and hydrochloric acid from metal chloride |
| CN1454844A (en) * | 2003-04-27 | 2003-11-12 | 东营市清华海洋化工有限责任公司 | Brine purifying technique |
| CN1480402A (en) * | 2002-09-03 | 2004-03-10 | 山东海化集团有限公司 | Method for pretreating raw material of white magnesium chloride through aged bittern |
| CN101164886A (en) * | 2007-09-28 | 2008-04-23 | 山西大学 | Method for purifying and decoloring salt lake brine |
-
2009
- 2009-07-10 CN CN2009100696869A patent/CN101941766B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3980536A (en) * | 1975-04-11 | 1976-09-14 | Nl Industries, Inc. | Process for producing magnesium metal from magnesium chloride brines |
| US4425314A (en) * | 1981-09-09 | 1984-01-10 | Gattys Franz J | Method for the manufacture of metal oxide and hydrochloric acid from metal chloride |
| CN1480402A (en) * | 2002-09-03 | 2004-03-10 | 山东海化集团有限公司 | Method for pretreating raw material of white magnesium chloride through aged bittern |
| CN1454844A (en) * | 2003-04-27 | 2003-11-12 | 东营市清华海洋化工有限责任公司 | Brine purifying technique |
| CN101164886A (en) * | 2007-09-28 | 2008-04-23 | 山西大学 | Method for purifying and decoloring salt lake brine |
Non-Patent Citations (2)
| Title |
|---|
| 张子兴等.双氧水氧化盐湖卤水脱色的研究.《无机盐工业》.2008,第40卷(第03期), * |
| 李星等.二氧化氯用于氯化镁脱色的研究和应用.《化工时刊》.2004,第18卷(第04期), * |
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| Publication number | Publication date |
|---|---|
| CN101941766A (en) | 2011-01-12 |
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Granted publication date: 20120502 Termination date: 20160710 |