CN104085906A - Solvent-extraction comprehensive utilization process for industrial waste salt - Google Patents
Solvent-extraction comprehensive utilization process for industrial waste salt Download PDFInfo
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- CN104085906A CN104085906A CN201410342682.4A CN201410342682A CN104085906A CN 104085906 A CN104085906 A CN 104085906A CN 201410342682 A CN201410342682 A CN 201410342682A CN 104085906 A CN104085906 A CN 104085906A
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Abstract
The invention provides a solvent-extraction comprehensive utilization process for an industrial waste salt. The process has the advantages that organic impurities and inorganic salts in the industrial waste salt can be effectively separated, the production process is simple, and the production cost is low. The process comprises the following steps: taking 70% (by mass percent) methanol and 30% (by mass percent) ethyl ether as solvents, and taking the industrial waste salt as a solute, wherein the mass ratio of solute to solvents is 1: (1-2); mixing the solvents and the solute, and then, uniformly stirring; after the mixture precipitates, extracting a supernatant, and rectifying the supernatant at normal pressure and the temperature of 100-120 DEG C; and heating to bake lower-layer precipitates, thereby obtaining a finished product industrial salt.
Description
(1) technical field
The present invention relates to trade waste treatment process, be specifically related to a kind of industrial waste salt solvent extraction comprehensive utilization process.
(2) background technology
Some organic or inorganic Chemicals; as: agricultural chemicals glyphosate, epoxy resin etc. in process of production usually can by-product abraum salts; the sodium-chlor mass content of this class salt is more than 70%; contain a large amount of organic or inorganic impurity simultaneously; can not directly be used as industrial raw material salt; more can not be for edible or medical, most of manufacturer stores away its heap.This class salt is stored up not only a large amount of occupied grounds for a long time, also to environment structure grave danger.Salt and impurity very easily run off, and salinization surrounding soil jeopardizes periphery vegetation, the rivers that close on, water source, rice field etc. is polluted simultaneously.
Salt is a kind of important basic chemical industry raw material, and consumption is huge, is again a kind of very important strategic material, in China, is under the overall leadership by country always, carries out sale monopoly.So recycle salt resource, there is huge social benefit and good economic benefit.But the treatment process of current domestic shortage energy-conserving and environment-protective, is mainly used land-fill method and the mode that adds thermal incineration to process.Land-fill method causes the huge waste of resource and serious environmental pollution; The mode that use adds thermal incineration need to consume a large amount of heat energy and easily cause secondary pollution.
(3) summary of the invention
The object of the invention is to overcome the defect of existing processing mode, a kind of energy-saving and environmental protection, the simple industrial waste salt solvent extraction of technique comprehensive utilization process are provided, organic impurity in industrial waste salt and inorganic salts are carried out effective separated, the Industrial Salt that production can directly be used.
For achieving the above object, industrial waste salt solvent extraction comprehensive utilization process of the present invention, its step successively:
a,the methyl alcohol that the mass percent of take is 70% and 30% ether are solvent, take industrial waste salt as solute, and both stir after mixing;
After B, mixture precipitation, take out supernatant thing;
C, supernatant thing carry out rectifying normal pressure, 100～120 ℃, isolate solvent and organic impurity;
After D, lower sediment thing heating, drying, obtain finished product Industrial Salt.
Wherein: the mass ratio of solute and solvent is 1: 1～2.
Adopt technique scheme, in industrial waste salt, contained organic impurity is by dissolution with solvents, and the mixed solvent that is insoluble to methyl alcohol, ether composition because of sodium-chlor is separated as throw out; Dissolved the supernatant thing of organic impurity after rectifying, owing to having boiling-point difference between solvent and organic matter, methyl alcohol, ether because boiling point compared with low separated and recycle, the organic impurity of extraction can be used as byproduct and reclaims its and use.
Owing to adopting technique scheme, the present invention has advantages of as follows:
A, foreign organic matter and Industrial Salt can be effectively separated, utilize respectively, and raw material availability is high;
B, methyl alcohol, ether are basic chemical industry raw material, can conveniently obtain;
C, methyl alcohol, ether dissolve each other, and boiling point is lower, and recovery is easy and energy consumption is low;
D, production technique are simple, and solvent can be recycled, low production cost;
E, industrial waste salt are able to comprehensive utilization of resources, reduce land seizure, have protected ecotope.
(4) embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
A, getting the abraum salt of by-product in agricultural chemicals Radix Glycyrrhizae phosphorus production process, 90% is wherein sodium-chlor after testing, and 10% is organic impurity;
B, in reactor, add above-mentioned abraum salt 1000kg;
C, in same reactor, add respectively 700kg methyl alcohol and 300kg ether, stir;
D, staticly settle rear taking-up supernatant thing, under normal pressure, 100 ℃ of conditions, carry out rectifying, gained methyl alcohol and ether collect, recycle after cooling, and the organic impurity of extraction is as byproduct;
After E, lower sediment thing heating, drying finished product Industrial Salt 900kg, the methyl alcohol producing in heat-processed and ether collect, recycle after cooling.
Embodiment 2
A, getting the abraum salt of by-product in agricultural chemicals Radix Glycyrrhizae phosphorus production process, 90% is wherein sodium-chlor after testing, and 10% is organic impurity;
B, in reactor, add above-mentioned abraum salt 1000kg;
C, in same reactor, add respectively 1400kg methyl alcohol and 600kg ether, stir;
D, staticly settle rear taking-up supernatant thing, under normal pressure, 120 ℃ of conditions, carry out rectifying, gained methyl alcohol and ether collect, recycle after cooling, and the organic impurity of extraction is as byproduct;
After E, lower sediment thing heating, drying finished product Industrial Salt 900kg, the methyl alcohol producing in heat-processed and ether collect, recycle after cooling.
Embodiment 3
By-product in A, extracting epoxy resin production process, after testing wherein 94.31% for sodium-chlor, organic impurity 4.07%, insolubles be 1.62%;
B, in reactor, add above-mentioned abraum salt 1000kg;
C, in same reactor, add respectively 700kg methyl alcohol and 300kg ether, stir;
D, staticly settle rear taking-up supernatant thing, under normal pressure, 120 ℃ of conditions, carry out rectifying, gained methyl alcohol and ether collect, recycle after cooling, and the organic impurity of extraction is as byproduct;
After E, lower sediment thing heating, drying finished product Industrial Salt 959.3kg, the methyl alcohol producing in heat-processed and ether collect, recycle after cooling.
Embodiment 4
By-product in A, extracting epoxy resin production process, after testing wherein 94.31% for sodium-chlor, organic impurity 4.07%, insolubles be 1.62%;
B, in reactor, add above-mentioned abraum salt 1000kg;
C, in same reactor, add respectively 1400kg methyl alcohol and 600kg ether, stir;
D, staticly settle rear taking-up supernatant thing, under normal pressure, 100 ℃ of conditions, carry out rectifying, gained methyl alcohol and ether collect, recycle after cooling, and the organic impurity of extraction is as byproduct;
After E, lower sediment thing heating, drying finished product Industrial Salt 959.3kg, the methyl alcohol producing in heat-processed and ether collect, recycle after cooling.
After the inorganic salt such as the present invention is with an organic solvent dissolved contained organic impurity in industrial waste salt, sodium-chlor precipitations, carry out effective separation, realized the effectively separated of organic impurity and inorganic salt in industrial waste salt, its separating technology is simple, good separating effect.To having dissolved the solvent of organic impurity, utilize boiling-point difference to heat fractionation by distillation, obtain organism as byproduct, distillations is used as solvent cycle.To throw out drying, heating obtains making Industrial Salt, and volatile matter is used as solvent cycle.Technique is simple, and energy-conserving and environment-protective possess good promotional value.
Claims (2)
1. an industrial waste salt solvent extraction comprehensive utilization process, comprises the following steps:
The methyl alcohol that A, the mass percent of take are 70% and 30% ether are solvent, take industrial waste salt as solute, and both stir after mixing;
After B, mixture precipitation, take out supernatant thing;
C, supernatant thing carry out rectifying normal pressure, 100～120 ℃, isolate solvent and organic impurity;
After D, lower sediment thing heating, drying, obtain finished product Industrial Salt.
2. industrial waste salt solvent extraction comprehensive utilization process as claimed in claim 1, wherein: the mass ratio of solute and solvent is 1: 1～2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410342682.4A CN104085906A (en) | 2014-07-14 | 2014-07-14 | Solvent-extraction comprehensive utilization process for industrial waste salt |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410342682.4A CN104085906A (en) | 2014-07-14 | 2014-07-14 | Solvent-extraction comprehensive utilization process for industrial waste salt |
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| CN104085906A true CN104085906A (en) | 2014-10-08 |
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| CN201410342682.4A Pending CN104085906A (en) | 2014-07-14 | 2014-07-14 | Solvent-extraction comprehensive utilization process for industrial waste salt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111790172A (en) * | 2020-07-29 | 2020-10-20 | 濮阳市盛源能源科技股份有限公司 | Solvent distillation recovery system and use method |
| CN112279274A (en) * | 2019-07-25 | 2021-01-29 | 中国科学院过程工程研究所 | Method for removing COD (chemical oxygen demand) of industrial byproduct salt |
| CN114308983A (en) * | 2021-12-29 | 2022-04-12 | 安徽今朝环保科技有限公司 | Device and method for cyclone separation reduction of single crystal grain of waste salt |
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| CN1244500A (en) * | 1999-08-08 | 2000-02-16 | 王哲 | Extraction process to separate organic matter from inorganic salt |
| CN101671038A (en) * | 2009-09-18 | 2010-03-17 | 张青 | Method for comprehensively utilizing solid waste in methyl carbonate production |
| CN101805441A (en) * | 2010-03-31 | 2010-08-18 | 南通星辰合成材料有限公司 | Demineralizing, purifying and filtering device in epoxy resin production |
| CN101851253A (en) * | 2009-04-02 | 2010-10-06 | 李坚 | Triethylamine-free method for preparing glyphosate |
| CN101885494A (en) * | 2010-06-24 | 2010-11-17 | 山东阳谷华泰化工股份有限公司 | Purification technology for producing salt in waste water by thiofide |
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2014
- 2014-07-14 CN CN201410342682.4A patent/CN104085906A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244500A (en) * | 1999-08-08 | 2000-02-16 | 王哲 | Extraction process to separate organic matter from inorganic salt |
| CN101851253A (en) * | 2009-04-02 | 2010-10-06 | 李坚 | Triethylamine-free method for preparing glyphosate |
| CN101671038A (en) * | 2009-09-18 | 2010-03-17 | 张青 | Method for comprehensively utilizing solid waste in methyl carbonate production |
| CN101805441A (en) * | 2010-03-31 | 2010-08-18 | 南通星辰合成材料有限公司 | Demineralizing, purifying and filtering device in epoxy resin production |
| CN101885494A (en) * | 2010-06-24 | 2010-11-17 | 山东阳谷华泰化工股份有限公司 | Purification technology for producing salt in waste water by thiofide |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279274A (en) * | 2019-07-25 | 2021-01-29 | 中国科学院过程工程研究所 | Method for removing COD (chemical oxygen demand) of industrial byproduct salt |
| CN111790172A (en) * | 2020-07-29 | 2020-10-20 | 濮阳市盛源能源科技股份有限公司 | Solvent distillation recovery system and use method |
| CN114308983A (en) * | 2021-12-29 | 2022-04-12 | 安徽今朝环保科技有限公司 | Device and method for cyclone separation reduction of single crystal grain of waste salt |
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Application publication date: 20141008 |