CN104129760B - A kind of low-density SODIUM PERCARBONATE production system and technique - Google Patents
A kind of low-density SODIUM PERCARBONATE production system and technique Download PDFInfo
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- CN104129760B CN104129760B CN201410368509.1A CN201410368509A CN104129760B CN 104129760 B CN104129760 B CN 104129760B CN 201410368509 A CN201410368509 A CN 201410368509A CN 104129760 B CN104129760 B CN 104129760B
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- sodium percarbonate
- concentration tank
- granulation tower
- mother solution
- mixer
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- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 title claims abstract description 41
- 229940045872 sodium percarbonate Drugs 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000010413 mother solution Substances 0.000 claims abstract description 34
- 238000005469 granulation Methods 0.000 claims abstract description 31
- 230000003179 granulation Effects 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 23
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 17
- 239000002002 slurry Substances 0.000 claims description 15
- 239000003381 stabilizer Substances 0.000 claims description 15
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 claims description 10
- 229940061634 magnesium sulfate heptahydrate Drugs 0.000 claims description 10
- HQAITFAUVZBHNB-UHFFFAOYSA-N sodium;pentahydrate Chemical compound O.O.O.O.O.[Na] HQAITFAUVZBHNB-UHFFFAOYSA-N 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000005276 aerator Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 8
- 239000011780 sodium chloride Substances 0.000 abstract description 4
- 238000010924 continuous production Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract 1
- 239000003599 detergent Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 150000001638 boron Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Detergent Compositions (AREA)
Abstract
The invention discloses the production system of a kind of low-density SODIUM PERCARBONATE and technique, present system includes the mixer, mixing reactor and the concentration tank that are sequentially connected with, and the upper outlet of concentration tank has been sequentially connected with mother solution pond, centrifugal pump, and centrifugal delivery side of pump connects mixer；The lower outlet of concentration tank has been sequentially connected with underflow pump, densimeter, granulation tower, and granulation tower upper outlet connects cyclone separator, and Cyclone outlet connects sack cleaner；Described granulation tower is connected to heat exchanger；Present system is simple, reasonable in design, convenient operation, belongs to into while go out continuous production processes, and production efficiency is high, production cost is low；Not containing sodium chloride in finished product SODIUM PERCARBONATE, product purity is high, thermally-stabilised height, 90 DEG C, 24h when product heat stability reach more than 90%；Product particle density little (0.4-0.6g/ml).Non-wastewater discharge in present invention process production process, belongs to environmentally friendly technique, is suitable for industrialized production.
Description
Technical field
The invention belongs to SODIUM PERCARBONATE production technical field, be specifically related to a kind of low-density SODIUM PERCARBONATE production system and technique.
Background technology
SODIUM PERCARBONATE outward appearance is white crystals granule or crystalline powder.Wet can be disengaged.Belong to strong oxidizer.SODIUM PERCARBONATE is the additive compound of hydrogen peroxide and sodium carbonate, is mainly used as the detergent of department, abluent, the antibacterial such as bleach and oxidant, and chemical industry, papermaking, weaving, dyeing and finishing, food, medicine, health.Other purposes with Dexol seemingly, can replace Dexol to save boron salt.
Present domestic SODIUM PERCARBONATE all adopts wet process technique, and molten alkali and reaction process belong to intermittently operated, and production efficiency is low, the SODIUM PERCARBONATE ratio produced is great, add to and detergent occurring, layering mixes uneven, and the rate of dissolution in water is slow, and detergent dissolving is asynchronous.Saltouing owing to wet processing is used that, therefore containing sodium chloride in SODIUM PERCARBONATE, salt content is at 2-3%, and product purity is low, poor stability.
Summary of the invention
It is an object of the invention to provide a kind of low-density SODIUM PERCARBONATE production system, the production technology utilizing this system to produce low-density SODIUM PERCARBONATE is provided simultaneously.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of low-density SODIUM PERCARBONATE production system, including the mixer being sequentially connected with, mixing reactor and concentration tank, the upper outlet of concentration tank has been sequentially connected with mother solution pond, centrifugal pump, and centrifugal delivery side of pump connects mixer；The lower outlet of concentration tank has been sequentially connected with underflow pump, densimeter, granulation tower, and granulation tower upper outlet connects cyclone separator, and Cyclone outlet connects sack cleaner；Being connected to heat exchanger on described granulation tower, the thermal source inlet of heat exchanger connects Boiler Steam, and another entrance of heat exchanger connects aerator.
Utilize above-mentioned production system to produce the technique of SODIUM PERCARBONATE, comprise the following steps:
(1) by soda, the stabilizer of soda quality 2-3% and mother solution mix to obtain slurry at mixer, keep slurry concentration at 45-50wt%, then slurry being pushed away is added in mixing reactor, the 27.5wt% aqueous hydrogen peroxide solution of soda quality 170-175% is added in mixing reactor, SODIUM PERCARBONATE is prepared (owing to soda and hydrogen peroxide react quickly 30-35 DEG C of reaction, react at a touch, and it is into while go out production method, therefore the response time can according to produce it needs to be determined that), then the reactant liquor in mixing reactor is joined in concentration tank, concentration tank removes mother solution, mother solution enter behind mother solution pond by centrifugal pump return mixer carry out again with；Described mother solution is first time utilize above method to enter the solution in mother solution pond after preparing SODIUM PERCARBONATE with water, soda, stabilizer for raw material；Described stabilizer is made up of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate, and the mass ratio of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate is 2-3: 1；
(2) densimeter is utilized to control in concentration tank the concentration of underflow at 50-55wt%, all the water that raw material hydrogen peroxide is brought into is taken away, then underflow pump is used the underflow in concentration tank to be delivered in granulation tower and carries out pelletize, sprinkler pressure 2-3bar, mist projection granulating temperature 85-90 DEG C in granulation tower, namely prepares the low-density SODIUM PERCARBONATE of 50-80 order.
Present system is simple, reasonable in design, convenient operation, different from traditional batch production technique, and present invention process joins alkali and reaction all carries out in double worm mixer, belongs to into while go out continuous production processes, and production efficiency is high, production cost is low；Without sodium chloride in course of reaction, not only yield is high, and contain sodium chloride in finished product SODIUM PERCARBONATE, product purity height, thermally-stabilised height, 90 DEG C, 24h when product heat stability reach more than 90%；The sodium percarbonate granules density produced is little (0.4-0.6g/ml), comparatively loose, can be directly appended in detergent not stratified.Non-wastewater discharge in present invention process production process, belongs to environmentally friendly technique, is suitable for industrialized production.
Accompanying drawing explanation
Fig. 1 is present system structural representation.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further explained illustrates, but protection scope of the present invention is not limited to that.
Low-density SODIUM PERCARBONATE production system as shown in Figure 1, including the double worm mixer 1 being sequentially connected with, the Double helix mixing reactor 2 of bandpass chilled water chuck and concentration tank 3, the upper outlet of concentration tank 3 has been sequentially connected with mother solution pond 4, centrifugal pump 5, and the outlet of centrifugal pump 5 connects double worm mixer 1；The lower outlet of concentration tank 3 has been sequentially connected with underflow pump 6, densimeter 7, granulation tower 8, and granulation tower 8 upper outlet connects cyclone separator 9, and cyclone separator 9 outlet connects sack cleaner 10；Being connected to heat exchanger 11 on described granulation tower 8, the thermal source inlet of heat exchanger 11 connects Boiler Steam, and another entrance of heat exchanger 11 connects aerator 12；Granulation tower 8 upper outlet tail gas discharges after passing sequentially through cyclone separator 9 and sack cleaner 10 process.
Embodiment 1
Utilize production system shown in Fig. 1 to produce the technique of SODIUM PERCARBONATE, comprise the following steps
(1) by soda, the stabilizer of soda quality 2% and mother solution mix to obtain slurry at double worm mixer 1, keep slurry concentration at 45wt%, then slurry is pushed away in the Double helix mixing reactor 2 being added to bandpass chilled water chuck, the 27.5wt% aqueous hydrogen peroxide solution of soda quality 170% is added in the Double helix mixing reactor 2 of bandpass chilled water chuck, SODIUM PERCARBONATE is prepared 30 DEG C of reactions by regulating freezing water rate control temperature, then the reactant liquor in the Double helix mixing reactor 2 of bandpass chilled water chuck is joined in concentration tank 3, concentration tank 3 removes mother solution, mother solution enter behind mother solution pond 4 by centrifugal pump 5 return double worm mixer 1 carry out again with；Described mother solution is first time utilize above method to enter the solution in mother solution pond 4 after preparing SODIUM PERCARBONATE with water, soda, stabilizer for raw material；Described stabilizer is made up of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate, and the mass ratio of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate is 2: 1；
(2) densimeter 7 is utilized to control in concentration tank 3 concentration of underflow at 50wt%, all the water that raw material hydrogen peroxide is brought into is taken away, then the underflow in 6 concentration tanks 3 of underflow pump is used to be delivered in granulation tower 8 and carry out pelletize, sprinkler pressure 2bar in granulation tower 8, aerator 12 is utilized to control mist projection granulating temperature 90 DEG C by being delivered to granulation tower 8 by the Boiler Steam heat of heat exchanger 11, namely preparing the low-density SODIUM PERCARBONATE of 80 orders, granulation tower 8 upper outlet tail gas discharges after passing sequentially through cyclone separator 9 and sack cleaner 10 process.
Embodiment 2
Utilize production system shown in Fig. 1 to produce the technique of SODIUM PERCARBONATE, comprise the following steps
(1) by soda, the stabilizer of soda quality 3% and mother solution mix to obtain slurry at double worm mixer 1, keep slurry concentration at 50wt%, then slurry is pushed away in the Double helix mixing reactor 2 being added to bandpass chilled water chuck, the 27.5wt% aqueous hydrogen peroxide solution of soda quality 175% is added in the Double helix mixing reactor 2 of bandpass chilled water chuck, SODIUM PERCARBONATE is prepared 35 DEG C of reactions by regulating freezing water rate control temperature, then the reactant liquor in the Double helix mixing reactor 2 of bandpass chilled water chuck is joined in concentration tank 3, concentration tank 3 removes mother solution, mother solution enter behind mother solution pond 4 by centrifugal pump 5 return double worm mixer 1 carry out again with；Described mother solution is first time utilize above method to enter the solution in mother solution pond 4 after preparing SODIUM PERCARBONATE with water, soda, stabilizer for raw material；Described stabilizer is made up of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate, and the mass ratio of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate is 2: 1；
(2) densimeter 7 is utilized to control in concentration tank 3 concentration of underflow at 55wt%, all the water that raw material hydrogen peroxide is brought into is taken away, then the underflow in 6 concentration tanks 3 of underflow pump is used to be delivered in granulation tower 8 and carry out pelletize, sprinkler pressure 3bar in granulation tower 8, aerator 12 is utilized to control mist projection granulating temperature 85 DEG C by being delivered to granulation tower 8 by the Boiler Steam heat of heat exchanger 11, namely preparing the low-density SODIUM PERCARBONATE of 50 orders, granulation tower 8 upper outlet tail gas discharges after passing sequentially through cyclone separator 9 and sack cleaner 10 process.
Embodiment 3
Utilize production system shown in Fig. 1 to produce the technique of SODIUM PERCARBONATE, comprise the following steps
(1) by soda, the stabilizer of soda quality 2% and mother solution mix to obtain slurry at double worm mixer 1, keep slurry concentration at 48wt%, then slurry is pushed away in the Double helix mixing reactor 2 being added to bandpass chilled water chuck, the 27.5wt% aqueous hydrogen peroxide solution of soda quality 170% is added in the Double helix mixing reactor 2 of bandpass chilled water chuck, SODIUM PERCARBONATE is prepared 32 DEG C of reactions by regulating freezing water rate control temperature, then the reactant liquor in the Double helix mixing reactor 2 of bandpass chilled water chuck is joined in concentration tank 3, concentration tank 3 removes mother solution, mother solution enter behind mother solution pond 4 by centrifugal pump 5 return double worm mixer 1 carry out again with；Described mother solution is first time utilize above method to enter the solution in mother solution pond 4 after preparing SODIUM PERCARBONATE with water, soda, stabilizer for raw material；Described stabilizer is made up of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate, and the mass ratio of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate is 3: 1；
(2) densimeter 7 is utilized to control in concentration tank 3 concentration of underflow at 53wt%, all the water that raw material hydrogen peroxide is brought into is taken away, then the underflow in 6 concentration tanks 3 of underflow pump is used to be delivered in granulation tower 8 and carry out pelletize, sprinkler pressure 3bar in granulation tower 8, aerator 12 is utilized to control mist projection granulating temperature 87 DEG C by being delivered to granulation tower 8 by the Boiler Steam heat of heat exchanger 11, namely preparing the low-density SODIUM PERCARBONATE of 60 orders, granulation tower 8 upper outlet tail gas discharges after passing sequentially through cyclone separator 9 and sack cleaner 10 process.
SODIUM PERCARBONATE in above-described embodiment is detected, result is 90 DEG C, 24h when product heat stability reach more than 90%；The sodium percarbonate granules density produced is little (0.4-0.6g/ml), comparatively loose, can be directly appended in detergent not stratified.
Claims (3)
1. a low-density SODIUM PERCARBONATE production technology, it is characterised in that comprise the following steps:
(1) soda, the stabilizer of soda quality 2-3% and mother solution are mixed to obtain slurry at mixer, keep slurry concentration at 45-50wt%, then slurry being pushed away is added in mixing reactor, the 27.5wt% aqueous hydrogen peroxide solution of soda quality 170-175% is added in mixing reactor, SODIUM PERCARBONATE is prepared 30-35 DEG C of reaction, then the reactant liquor in mixing reactor is joined in concentration tank, concentration tank removes mother solution, mother solution enter behind mother solution pond by centrifugal pump return mixer carry out again with；Described mother solution is first time utilize above method to enter the solution in mother solution pond after preparing SODIUM PERCARBONATE with water, soda, stabilizer for raw material；Described stabilizer is made up of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate, and the mass ratio of metasilicate pentahydrate sodium and Magnesium sulfate heptahydrate is 2-3: 1；
(2) densimeter is utilized to control in concentration tank the concentration of underflow at 50-55wt%, then underflow pump is used the underflow in concentration tank to be delivered in granulation tower and carries out pelletize, sprinkler pressure 2-3bar, mist projection granulating temperature 85-90 DEG C in granulation tower, namely prepares the low-density SODIUM PERCARBONATE of 50-80 order；
Above-mentioned production technology is realized by following production system: including the mixer, mixing reactor and the concentration tank that are sequentially connected with, the upper outlet of concentration tank has been sequentially connected with mother solution pond, centrifugal pump, and centrifugal delivery side of pump connects mixer；The lower outlet of concentration tank has been sequentially connected with underflow pump, densimeter, granulation tower, and granulation tower upper outlet connects cyclone separator, and Cyclone outlet connects sack cleaner；Being connected to heat exchanger on described granulation tower, the thermal source inlet of heat exchanger connects Boiler Steam, and another entrance of heat exchanger connects aerator, and described mixer is double worm mixer, and described mixing reactor is the Double helix mixing reactor of bandpass chilled water chuck.
2. low-density SODIUM PERCARBONATE production technology as claimed in claim 1, it is characterised in that granulation tower temperature is controlled by heat exchanger and aerator.
3. low-density SODIUM PERCARBONATE production technology as claimed in claim 1, it is characterised in that: granulation tower upper outlet tail gas discharges after passing sequentially through cyclone separator and sack cleaner process.
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| CN201410368509.1A CN104129760B (en) | 2014-07-30 | 2014-07-30 | A kind of low-density SODIUM PERCARBONATE production system and technique |
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| CN104129760B true CN104129760B (en) | 2016-06-29 |
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| CN117208855A (en) * | 2023-09-06 | 2023-12-12 | 浙江金科日化新材料股份有限公司 | Light sodium percarbonate and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171280A (en) * | 1977-11-03 | 1979-10-16 | The Clorox Company | Powder percarbonate bleach and formation thereof |
| CN1222126A (en) * | 1996-03-27 | 1999-07-07 | 比利时索尔维因特罗斯公司 | Process for producing percarbonate |
| CN101337658A (en) * | 2008-08-14 | 2009-01-07 | 河南宏业化工有限公司 | Method for synthesizing sodium percarbonate of high stability |
| CN102211761A (en) * | 2011-04-11 | 2011-10-12 | 边文阳 | Method for preparing sodium peroxocarbonate by spray drying method and preparation system and application thereof |
-
2014
- 2014-07-30 CN CN201410368509.1A patent/CN104129760B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171280A (en) * | 1977-11-03 | 1979-10-16 | The Clorox Company | Powder percarbonate bleach and formation thereof |
| CN1222126A (en) * | 1996-03-27 | 1999-07-07 | 比利时索尔维因特罗斯公司 | Process for producing percarbonate |
| CN101337658A (en) * | 2008-08-14 | 2009-01-07 | 河南宏业化工有限公司 | Method for synthesizing sodium percarbonate of high stability |
| CN102211761A (en) * | 2011-04-11 | 2011-10-12 | 边文阳 | Method for preparing sodium peroxocarbonate by spray drying method and preparation system and application thereof |
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Denomination of invention: A low density sodium percarbonate production system and process Effective date of registration: 20230202 Granted publication date: 20160629 Pledgee: Henan Nanle Rural Commercial Bank Co.,Ltd. Taihe Sub branch Pledgor: Puyang Shengkai environmental protection new material technology Co.,Ltd. Registration number: Y2023980031995 |
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Date of cancellation: 20230703 Granted publication date: 20160629 Pledgee: Henan Nanle Rural Commercial Bank Co.,Ltd. Taihe Sub branch Pledgor: Puyang Shengkai environmental protection new material technology Co.,Ltd. Registration number: Y2023980031995 |