CN105293531A - Byproduct industrial salt refined processing method - Google Patents
Byproduct industrial salt refined processing method Download PDFInfo
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- CN105293531A CN105293531A CN201510851364.5A CN201510851364A CN105293531A CN 105293531 A CN105293531 A CN 105293531A CN 201510851364 A CN201510851364 A CN 201510851364A CN 105293531 A CN105293531 A CN 105293531A
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Abstract
The invention discloses a byproduct industrial salt refined processing method, and belongs to the technical field of byproduct industrial salt. The method comprises the following steps: raising the temperature of distilled water to be 40-50 DEG C, and then adding byproduct industrial salt under the stirring condition; continuously heating to 55-65 DEG C, adding activated carbon, maintaining the temperature, stirring for 1-2 h, and performing still standing for 20-30 min; filtering, and conducting spray drying on the filtrate to obtain solid salt; smashing the solid salt to be 30-50 meshes, putting the smashed solid salt into a high-temperature kiln, conducting medium temperature ignition under the aerobic condition, and carbonizing organic impurities in the waste salt to obtain grey solid; adding water of which the mass is 5-7 times of that of the solid to dissolve the solid, and neutralizing solution to be neutral through hydrochloric acid; conducting ultrafiltration to remove carbon black solid so as to obtain a colorless filtrate; conducting vacuumizing and heating dehydration on the filtrate so as to obtain the pure white salt crystal finally. According to the method, organic matters in the byproduct industrial salt can be effectively cleared, waste is reduced, and the environmental protection property is improved.
Description
Technical field
The present invention relates to by-product Industrial Salt processing technology field, particularly a kind of fine purification treatment process of by-product Industrial Salt.
Background technology
At present, by-product Industrial Salt, because of containing a small amount of organism, is difficult to be effectively addressed and utilize, can not directly as the raw material of derived product.Fixed-end forces center processing be stored up or be delivered in major part manufacturer can only.The processing costs at current fixed-end forces center is up to 3000-4000 unit/t, and enterprise is difficult to bear, and main adopts processing mode landfill yard being taked to landfill again after anti-corrosion leak-proof process.This processing mode not only land occupation, also be the significant wastage to resource simultaneously, also there is potential risk environment being caused to grave danger, once anti-corrosion leak-proof layer leaks, soluble salt and organic impurity will run off, salinization surrounding soil, harm is vegetation around, pollutes periphery water source, underground water and farmland simultaneously.
By-product Industrial Salt is important Elementary Chemical Industry raw material, is also very valuable national strategy resource.Along with the high speed development of national economy, in Chemical Manufacture, various by-product Industrial Salt amount is increasing, to environment structure grave danger.In recent years, people progressively improve resources conservation, eco-friendly understanding, and government there has also been remarkable reinforcement in environmental protection legislation and law enforcement dynamics, and in Chemical Manufacture, the process of by-product Industrial Salt and recycling come into one's own day by day.
But, owing to containing more organism in by-product Industrial Salt, be difficult to adopt the method for traditional evaporative crystallization to clear up, therefore necessary design one more reasonably fine purification treatment process.
Summary of the invention
In order to make up the reluctant deficiency of organism in by-product Industrial Salt, the invention provides a kind of fine purification treatment process of by-product Industrial Salt, to solve the problem in above-mentioned background technology.
Technical scheme of the present invention is:
A fine purification treatment process for by-product Industrial Salt, comprises the steps:
(1) distilled water is warmed up to 40-50 DEG C, then adds by-product Industrial Salt in the condition stirred;
(2) continuous heating, is warming up to 55-65 DEG C, adds gac, holding temperature, stirs 1-2h, leaves standstill 20-30 minute;
(3) filter, by filtrate spraying dry, obtain solid salt;
(4) solid salt is crushed to 30-50 order, puts into high temperature kiln, warm calcination in carrying out under aerobic conditions, the organic impurity in abraum salt is carbonized, obtains gray solid;
(5) add solid masses 5-7 water doubly to be dissolved, with hydrochloric acid neutralization solution to neutral;
(6) ultrafiltration, removing carbon black solid, obtains colourless permeate;
(7) filtrate is vacuumized thermal dehydration, finally obtain pure white salt crystal, i.e. refining industrial salt.
In the present invention, as the preferred technical scheme of one, in step (1), stir with the speed of 100-120 rev/min.
In the present invention, as the preferred technical scheme of one, in step (2), stir with the speed of 200-300 rev/min.
In the present invention, as the preferred technical scheme of one, in step (4), calcination temperature adopts 450-550 DEG C.
In the present invention, as the preferred technical scheme of one, in step (4), calcination time is 11-13 hour.
In the present invention, as the preferred technical scheme of one, in step (5), add the water of solid masses 6 times by dissolution of solid.
Owing to have employed technique scheme, the present invention has following beneficial effect:
Distilled water is warmed up to 40-50 DEG C by the present invention, then adds by-product Industrial Salt in the condition stirred; Continuous heating, is warming up to 55-65 DEG C, adds gac, holding temperature, stirs 1-2h, leaves standstill 20-30 minute; Filter, by filtrate spraying dry, obtain solid salt; Solid salt is crushed to 30-50 order, puts into high temperature kiln, warm calcination in carrying out under aerobic conditions, the organic impurity in abraum salt is carbonized, obtains gray solid; Add solid masses 5-7 water doubly to be dissolved, with hydrochloric acid neutralization solution to neutral; Ultrafiltration, removing carbon black solid, obtains colourless permeate; Filtrate is vacuumized thermal dehydration, finally obtains pure white salt crystal.By above effective step, the organism in by-product Industrial Salt can effectively be removed by the present invention, obtains available pure salt, decreases waste, improve the feature of environmental protection.
Embodiment
Describe the present invention below in conjunction with specific embodiment.
Embodiment 1
A fine purification treatment process for by-product Industrial Salt, comprises the steps:
(1) distilled water is warmed up to 40 DEG C, then adds by-product Industrial Salt with the condition of the stirring of the speed of 100 revs/min;
(2) continuous heating, is warming up to 55 DEG C, adds gac, holding temperature, carries out stirring 1h with the speed of 200 revs/min, leaves standstill 20 minutes;
(3) filter, by filtrate spraying dry, obtain solid salt;
(4) solid salt is crushed to 30 orders, puts into high temperature kiln, warm calcination in carrying out under aerobic conditions, calcination temperature adopts 450 DEG C, and calcination time is 11 hours, the organic impurity in abraum salt is carbonized, obtains gray solid;
(5) water adding solid masses 5 times is dissolved, with hydrochloric acid neutralization solution to neutral;
(6) ultrafiltration, removing carbon black solid, obtains colourless permeate;
(7) filtrate is vacuumized thermal dehydration, finally obtain refining industrial salt.
Refining industrial salt index prepared by the present embodiment is as follows:
| Project | Index |
| Sodium-chlor (in NaCl) | 99.5 |
| Water-insoluble, % | 0.07 |
| Vitriol is (with SO 4 2-Meter) | 0.16 |
| Calcium ions and magnesium ions, % | 0.14 |
| Total organic carbon, mg/kg | 5.2 |
Embodiment 2
A fine purification treatment process for by-product Industrial Salt, comprises the steps:
(1) distilled water is warmed up to 50 DEG C, then adds by-product Industrial Salt with the condition of the stirring of the speed of 120 revs/min;
(2) continuous heating, is warming up to 65 DEG C, adds gac, holding temperature, carries out stirring 2h with the speed of 300 revs/min, leaves standstill 30 minutes;
(3) filter, by filtrate spraying dry, obtain solid salt;
(4) solid salt is crushed to 50 orders, puts into high temperature kiln, warm calcination in carrying out under aerobic conditions, calcination temperature adopts 550 DEG C, and calcination time is 13 hours, the organic impurity in abraum salt is carbonized, obtains gray solid;
(5) water adding solid masses 7 times is dissolved, with hydrochloric acid neutralization solution to neutral;
(6) ultrafiltration, removing carbon black solid, obtains colourless permeate;
(7) filtrate is vacuumized thermal dehydration, finally obtain refining industrial salt.
Refining industrial salt index prepared by the present embodiment is as follows:
| Project | Index |
| Sodium-chlor (in NaCl) | 99.5 |
| Water-insoluble, % | 0.06 |
| Vitriol is (with SO 4 2-Meter) | 0.15 |
| Calcium ions and magnesium ions, % | 0.15 |
| Total organic carbon, mg/kg | 5.1 |
Embodiment 3
A fine purification treatment process for by-product Industrial Salt, comprises the steps:
(1) distilled water is warmed up to 45 DEG C, then adds by-product Industrial Salt with the condition of the stirring of the speed of 110 revs/min;
(2) continuous heating, is warming up to 60 DEG C, adds gac, holding temperature, carries out stirring 1.5h with the speed of 250 revs/min, leaves standstill 25 minutes;
(3) filter, by filtrate spraying dry, obtain solid salt;
(4) solid salt is crushed to 40 orders, puts into high temperature kiln, warm calcination in carrying out under aerobic conditions, calcination temperature adopts 500 DEG C, and calcination time is 12 hours, the organic impurity in abraum salt is carbonized, obtains gray solid;
(5) water adding solid masses 6 times is dissolved, with hydrochloric acid neutralization solution to neutral;
(6) ultrafiltration, removing carbon black solid, obtains colourless permeate;
(7) filtrate is vacuumized thermal dehydration, finally obtain refining industrial salt.
Refining industrial salt index prepared by the present embodiment is as follows:
| Project | Index |
| Sodium-chlor (in NaCl) | 99.6 |
| Water-insoluble, % | 0.06 |
| Vitriol is (with SO 4 2-Meter) | 0.14 |
| Calcium ions and magnesium ions, % | 0.14 |
| Total organic carbon, mg/kg | 5.0 |
Embodiment 4
A fine purification treatment process for by-product Industrial Salt, comprises the steps:
(1) distilled water is warmed up to 40 DEG C, then adds by-product Industrial Salt with the condition of the stirring of the speed of 110 revs/min;
(2) continuous heating, is warming up to 65 DEG C, adds gac, holding temperature, carries out stirring 1.8h with the speed of 200 revs/min, leaves standstill 24 minutes;
(3) filter, by filtrate spraying dry, obtain solid salt;
(4) solid salt is crushed to 45 orders, puts into high temperature kiln, warm calcination in carrying out under aerobic conditions, calcination temperature adopts 480 DEG C, and calcination time is 11 hours, the organic impurity in abraum salt is carbonized, obtains gray solid;
(5) water adding solid masses 6 times is dissolved, with hydrochloric acid neutralization solution to neutral;
(6) ultrafiltration, removing carbon black solid, obtains colourless permeate;
(7) filtrate is vacuumized thermal dehydration, finally obtain refining industrial salt.
Refining industrial salt index prepared by the present embodiment is as follows:
| Project | Index |
| Sodium-chlor (in NaCl) | 99.5 |
| Water-insoluble, % | 0.09 |
| Vitriol is (with SO 4 2-Meter) | 0.16 |
| Calcium ions and magnesium ions, % | 0.15 |
| Total organic carbon, mg/kg | 5.1 |
Embodiment 5
A fine purification treatment process for by-product Industrial Salt, comprises the steps:
(1) distilled water is warmed up to 48 DEG C, then adds by-product Industrial Salt with the condition of the stirring of the speed of 120 revs/min;
(2) continuous heating, is warming up to 57 DEG C, adds gac, holding temperature, carries out stirring 1.3h with the speed of 200 revs/min, leaves standstill 30 minutes;
(3) filter, by filtrate spraying dry, obtain solid salt;
(4) solid salt is crushed to 30 orders, puts into high temperature kiln, warm calcination in carrying out under aerobic conditions, calcination temperature adopts 550 DEG C, and calcination time is 11 hours, the organic impurity in abraum salt is carbonized, obtains gray solid;
(5) water adding solid masses 7 times is dissolved, with hydrochloric acid neutralization solution to neutral;
(6) ultrafiltration, removing carbon black solid, obtains colourless permeate;
(7) filtrate is vacuumized thermal dehydration, finally obtain refining industrial salt.
Refining industrial salt index prepared by the present embodiment is as follows:
| Project | Index |
| Sodium-chlor (in NaCl) | 99.5 |
| Water-insoluble, % | 0.07 |
| Vitriol is (with SO 4 2-Meter) | 0.15 |
| Calcium ions and magnesium ions, % | 0.14 |
| Total organic carbon, mg/kg | 5.1 |
The above is only better embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (6)
1. a fine purification treatment process for by-product Industrial Salt, is characterized in that: comprise the steps:
(1) distilled water is warmed up to 40-50 DEG C, then adds by-product Industrial Salt in the condition stirred;
(2) continuous heating, is warming up to 55-65 DEG C, adds gac, holding temperature, stirs 1-2h, leaves standstill 20-30 minute;
(3) filter, by filtrate spraying dry, obtain solid salt;
(4) solid salt is crushed to 30-50 order, puts into high temperature kiln, warm calcination in carrying out under aerobic conditions, the organic impurity in abraum salt is carbonized, obtains gray solid;
(5) add solid masses 5-7 water doubly to be dissolved, with hydrochloric acid neutralization solution to neutral;
(6) ultrafiltration, removing carbon black solid, obtains colourless permeate;
(7) filtrate is vacuumized thermal dehydration, finally obtain pure white salt crystal, i.e. refining industrial salt.
2. the fine purification treatment process of a kind of by-product Industrial Salt as claimed in claim 1, is characterized in that: in step (1), stir with the speed of 100-120 rev/min.
3. the fine purification treatment process of a kind of by-product Industrial Salt as claimed in claim 1, is characterized in that: in step (2), stir with the speed of 200-300 rev/min.
4. the fine purification treatment process of a kind of by-product Industrial Salt as claimed in claim 1, is characterized in that: in step (4), and calcination temperature adopts 450-550 DEG C.
5. the fine purification treatment process of a kind of by-product Industrial Salt as claimed in claim 1, it is characterized in that: in step (4), calcination time is 11-13 hour.
6. the fine purification treatment process of a kind of by-product Industrial Salt as claimed in claim 1, is characterized in that: in step (5), adds the water of solid masses 6 times by dissolution of solid.
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| CN201510851364.5A CN105293531A (en) | 2015-11-26 | 2015-11-26 | Byproduct industrial salt refined processing method |
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| CN201510851364.5A CN105293531A (en) | 2015-11-26 | 2015-11-26 | Byproduct industrial salt refined processing method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106914474A (en) * | 2017-04-17 | 2017-07-04 | 辽宁东大粉体工程技术有限公司 | A kind of Processes and apparatus of industrial waste salt decomposition carbonization harmless treatment |
| CN106989403A (en) * | 2017-03-30 | 2017-07-28 | 大丰跃龙化学有限公司 | The processing method of abraum salt in cyclopropanecarboxylic acid wastewater treatment |
| CN109006601A (en) * | 2018-07-04 | 2018-12-18 | 山东省海洋生物研究院 | A kind of fishing salt integral method |
| CN109081364A (en) * | 2018-07-27 | 2018-12-25 | 南京工业大学 | A kind of method for innocent treatment of vitamin B6 abraum salt |
| CN110372013A (en) * | 2019-07-30 | 2019-10-25 | 天津理工大学 | A method of refining industrial salt is prepared using industrial waste salt |
| CN114011852A (en) * | 2021-09-18 | 2022-02-08 | 昆明市生态环境科学研究院 | Harmless salinization treatment method for organic waste |
| CN116282079A (en) * | 2022-12-29 | 2023-06-23 | 河南红东方化工股份有限公司 | Method for directly using byproduct industrial salt in chlor-alkali industry |
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| CN102730721A (en) * | 2012-06-11 | 2012-10-17 | 张家港市新盛新材料有限公司 | Recovering method of by-product sodium chloride in polyphenylene sulfide production |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989403A (en) * | 2017-03-30 | 2017-07-28 | 大丰跃龙化学有限公司 | The processing method of abraum salt in cyclopropanecarboxylic acid wastewater treatment |
| CN106914474A (en) * | 2017-04-17 | 2017-07-04 | 辽宁东大粉体工程技术有限公司 | A kind of Processes and apparatus of industrial waste salt decomposition carbonization harmless treatment |
| CN106914474B (en) * | 2017-04-17 | 2019-06-21 | 辽宁东大粉体工程技术有限公司 | A kind of Processes and apparatus of industrial waste salt decomposition carbonization harmless treatment |
| CN109006601A (en) * | 2018-07-04 | 2018-12-18 | 山东省海洋生物研究院 | A kind of fishing salt integral method |
| CN109081364A (en) * | 2018-07-27 | 2018-12-25 | 南京工业大学 | A kind of method for innocent treatment of vitamin B6 abraum salt |
| CN110372013A (en) * | 2019-07-30 | 2019-10-25 | 天津理工大学 | A method of refining industrial salt is prepared using industrial waste salt |
| CN114011852A (en) * | 2021-09-18 | 2022-02-08 | 昆明市生态环境科学研究院 | Harmless salinization treatment method for organic waste |
| CN116282079A (en) * | 2022-12-29 | 2023-06-23 | 河南红东方化工股份有限公司 | Method for directly using byproduct industrial salt in chlor-alkali industry |
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