CN1131123A - Method for producing stable sodium percarbonate - Google Patents
Method for producing stable sodium percarbonate Download PDFInfo
- Publication number
- CN1131123A CN1131123A CN 95111362 CN95111362A CN1131123A CN 1131123 A CN1131123 A CN 1131123A CN 95111362 CN95111362 CN 95111362 CN 95111362 A CN95111362 A CN 95111362A CN 1131123 A CN1131123 A CN 1131123A
- Authority
- CN
- China
- Prior art keywords
- spc
- producing stable
- amount
- hydrogen peroxide
- strong
- 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.)
- Pending
Links
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 title abstract description 4
- 229940045872 sodium percarbonate Drugs 0.000 title abstract description 4
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 239000003960 organic solvent Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 15
- 235000017550 sodium carbonate Nutrition 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000009736 wetting Methods 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 4
- 230000008025 crystallization Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 235000021463 dry cake Nutrition 0.000 claims description 2
- 239000012065 filter cake Substances 0.000 claims description 2
- 235000019441 ethanol Nutrition 0.000 abstract 1
- 239000000047 product Substances 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 235000012970 cakes Nutrition 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention relates to a method for producing sodium percarbonate by using sodium carbonate and hydrogen peroxide, and is characterized by that in the course of reaction also the organic solvents of ethyl alcohol, etc. which are strong in hydrophilicity and in which the solubility of sodium percarbonate is small are added.
Description
The present invention relates to a kind of method of producing stable SPC-D product.
It is investigated, CN1089571A discloses a kind of " preparation method of stable SPC-D ", the principal feature of this method is to be raw material with lower concentration hydrogen peroxide, yellow soda ash, selects the agent of some novel active oxygen quenching for use, thereby and is recycled to mother liquor preparation stable sodium percarbonate.
The objective of the invention is to design a kind of method that the active oxygen inhibitor can obtain stable SPC-D product of need not adding.
Experiment shows: the SPC-D of complete drying is a quite stable, and its thermostability is also relatively good, does not also have remarkable decomposition in the time of 100 ℃, also is stable to the exsiccant carbonic acid gas.Why unstable general SPC-D with yellow soda ash and aqueous hydrogen peroxide solution preparation is, and major cause is the relation that its finished product contain water, and when getting rid of water with general drying means, because contain the cause of water, SPC-D also will be decomposed rapidly.
In view of above-mentioned mechanism, the production method of the SPC-D that the present invention is designed is such:
A kind of method of producing stable SPC-D relates to major raw materials of sodium carbonate and aqueous hydrogen peroxide solution, it is characterized in that this method may further comprise the steps:
A, get an amount of yellow soda ash, an amount of aqueous hydrogen peroxide solution, the very strong and SPC-D of an amount of wetting ability is the little organic solvent of solubleness therein, adds in the reactor respectively;
B, under≤60 ℃ of temperature condition, through stirring, crystallization, filtration, promptly get the SPC-D filter cake that only contains little water;
Promptly get the stable SPC-D of complete drying behind c, the usefulness ordinary method dry cake.
The very strong and SPC-D organic solvent that solubleness is little therein of wetting ability of the present invention can be an ethanol, and then can also use industrial alcohol.
Advantage of the present invention is, owing to adopted the very strong and SPC-D of the wetting ability little organic solvents such as ethanol of solubleness therein, its dehydration is comparatively complete, thereby the stable SPC-D product of the dry acquisition of available ordinary method.
Provide three embodiment of the present invention below.
Embodiment 1: get anhydrous sodium carbonate 106Kg and be dissolved in 300 premium on currency, add 160 liters of 30% superoxols, temperature in≤60 ℃, stir, (filtrate was returned dissolving yellow soda ash in filtration immediately after crystallization formed, the lower whorl batching is used), get SPC-D wet cake 195Kg, in this SPC-D wet cake, add 150 liters of industrial alcohols immediately, mix, after fully fused, dry (filtrate being used to reclaimed ethanol), get water-free SPC-D 145Kg, in 90 ± 5 ℃ of oven dry, get dry SPC-D 137Kg (active o content 15.3%).
Embodiment 2: get anhydrous sodium carbonate 106Kg and be dissolved in 300 premium on currency, add 160 liters of 30% superoxols, temperature in≤60 ℃, stir, after crystallization forms, add 300 liters of industrial alcohols immediately, stir, filter, dry, get SPC-D 150Kg (mother liquor is used to regain ethanol), after method drying, get dry SPC-D 143Kg (active o content 15.4%) with embodiment 1.
Embodiment 3: with the powdered anhydrous yellow soda ash of 106Kg (whole mistake 60 mesh sieves), under constantly stirring, add in 200 liters of industrial alcohols, constantly stir in≤60 ℃, make it keep suspension slip state, add 160 liters of 30% aqueous hydrogen peroxide solutions, be stirred to and react completely, filter, dry, SPC-D 148Kg, use method drying with embodiment 1 after, dry SPC-D 142Kg (active o content 15.3%).
Claims (3)
1, a kind of method of producing stable SPC-D relates to major raw materials of sodium carbonate and aqueous hydrogen peroxide solution, it is characterized in that this method may further comprise the steps:
A, get an amount of yellow soda ash, an amount of aqueous hydrogen peroxide solution, an amount of wetting ability is very strong and the SPC-D little organic solvent of solubleness therein, adds in the reactor respectively;
B, under≤60 ℃ of temperature condition, through stirring, crystallization, filtration, promptly get the SPC-D filter cake that only contains little water;
Promptly get the stable SPC-D of complete drying behind c, the usefulness ordinary method dry cake.
2, a kind of method of producing stable SPC-D according to claim 1 is characterized in that the very strong and SPC-D organic solvent that solubleness is little therein of described wetting ability is an ethanol.
3, a kind of method of producing stable SPC-D according to claim 2 is characterized in that described ethanol is industrial alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111362 CN1131123A (en) | 1995-05-12 | 1995-05-12 | Method for producing stable sodium percarbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111362 CN1131123A (en) | 1995-05-12 | 1995-05-12 | Method for producing stable sodium percarbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1131123A true CN1131123A (en) | 1996-09-18 |
Family
ID=5078660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111362 Pending CN1131123A (en) | 1995-05-12 | 1995-05-12 | Method for producing stable sodium percarbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1131123A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330561C (en) * | 2002-06-27 | 2007-08-08 | 浙江金科化工股份有限公司 | Sodium percarbonate preparation method |
| CN1331737C (en) * | 2005-12-29 | 2007-08-15 | 河北沧州大化集团有限责任公司 | Sodium percarbonate crystal modifying agent and preparation process thereof |
| CN101786969B (en) * | 2010-01-29 | 2013-04-17 | 河北工业大学 | Method of joint production of urea hydrogen peroxide and sodium percarbonate |
-
1995
- 1995-05-12 CN CN 95111362 patent/CN1131123A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330561C (en) * | 2002-06-27 | 2007-08-08 | 浙江金科化工股份有限公司 | Sodium percarbonate preparation method |
| CN1331737C (en) * | 2005-12-29 | 2007-08-15 | 河北沧州大化集团有限责任公司 | Sodium percarbonate crystal modifying agent and preparation process thereof |
| CN101786969B (en) * | 2010-01-29 | 2013-04-17 | 河北工业大学 | Method of joint production of urea hydrogen peroxide and sodium percarbonate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |