CN109824191A - Glycerol is extracted in haline water in epoxy resin production process - Google Patents
Glycerol is extracted in haline water in epoxy resin production process Download PDFInfo
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- CN109824191A CN109824191A CN201811519920.9A CN201811519920A CN109824191A CN 109824191 A CN109824191 A CN 109824191A CN 201811519920 A CN201811519920 A CN 201811519920A CN 109824191 A CN109824191 A CN 109824191A
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- epoxy resin
- glycerol
- production process
- purification
- resin production
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Abstract
This application discloses extract glycerol in haline water in a kind of epoxy resin production process.Glycerol is extracted in haline water in the epoxy resin production process, the specific steps of which are as follows: (1), single extraction；(2), reextraction；(3), condensing crystallizing；(4), essence slips purification；(5), glycerol purifies；(6), dangerous waste is handled.The salt extraction of high-salt wastewater in epoxy resin production process is separated, final residual object does not contain salt, completely can be with biochemical treatment or burning.
Description
Technical field
The present invention relates to epoxy resin production technical fields, more particularly to haline water in a kind of epoxy resin production process
Middle extraction glycerol.
Background technique
High-salt wastewater carries out closed circulation processing technique in most domestic epoxy resin production process at present, first by epoxy
High-salt wastewater during production of resins carries out separation of oil, removes impurity by neutralizing, filtering, this strand of brine waste is through multiple-effect
Evaporation or MVR condensing crystallizing, centrifugal drying obtain Nacl, and the mother liquor for being centrifugated out returns lower circulation again and continues concentration set
With to form the closed cycle that seems, but with the continuous concentration of this strand of mother liquor, organic matter and inorganic matter in mother liquor are obtained not
To a suitable egress, the continuous accumulation of the high TOC mother liquor in this part directly affects the concentration effect of brine waste, until
It can not continue to produce, this strand of mother liquor and epoxy resin yield are directly proportional, and quantity is not easy to burn greatly, saliferous height is not easy biochemical treatment,
Subsequent processing is produced to epoxy resin and entire manufacturing cost is brought and directly affected.
Summary of the invention
It is existing to overcome the purpose of the present invention is to provide extracting glycerol in haline water in a kind of epoxy resin production process
Deficiency in technology.
To achieve the above object, the invention provides the following technical scheme:
The embodiment of the present application discloses in a kind of epoxy resin production process and extracts glycerol in haline water, and specific steps are such as
Under: (1), single extraction: in the mother liquor of high-salt wastewater containing epoxy resin after concentration is added as the first extractant in ethyl alcohol, stirring
After stand, supernatant liquor clear liquid is collected into liquid trap；(2), reextraction: continue ethyl alcohol as the second extractant, repetition is stirred
Supernatant liquor clear liquid is collected into the liquid trap, leaves mixed liquor and crystallization by the movement stood after mixing；(3), condensing crystallizing:
Mixed liquor and crystallization are handled by centrifuge, and liquid phase is recovered to the liquid trap, and crystal is returned to multiple-effect evaporation or MVR again
Secondary condensing crystallizing is centrifuged, is dried to Nacl；(4), essence slips purification: the liquid in the liquid trap is connect according to ethyl alcohol purification method
It carries out ethyl alcohol essence and slips purification；(5), glycerol purifies: the mixture after rectification and purification is utilized the purification recycling of glycerol method of purification；(6),
Dangerous waste processing: the residue after glycerol is purified send biochemical treatment or burning.
Preferably, it is extracted in glycerol in haline water in above-mentioned epoxy resin production process, asphalt mixtures modified by epoxy resin is contained described in rapid (1)
The cycles of concentration of rouge high-salt wastewater mother liquor is 10~15 times.
Preferably, it is extracted in glycerol in haline water in above-mentioned epoxy resin production process, first extractant and the
Two extractants are the ethyl alcohol of 90-99.7%.
Preferably, it is extracted in glycerol in haline water in above-mentioned epoxy resin production process, first extractant and the
The volume of two extractants is 1-3 times of the mother liquor volume of high-salt wastewater containing epoxy resin after the concentration.
Preferably, it is extracted in glycerol in haline water in above-mentioned epoxy resin production process, the time of the stirring is 10-
20min, the temperature of the stirring are 18-75 DEG C, and the time of the standing is 90-180min.
Preferably, it is extracted in glycerol in haline water in above-mentioned epoxy resin production process, essence described in step (4), which is slipped, to be mentioned
Concentration of alcohol after pure is 90-95%.
Compared with the prior art, the advantages of the present invention are as follows: the salt of the high-salt wastewater in epoxy resin production process is complete
Full extraction, total amount of residual materials is small, can meet the requirement of environmental protection production completely with biochemical treatment or burning.
Specific embodiment
The present invention is described further by the following example: according to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that specific material ratio, process conditions and its result described in embodiment are only used
In illustrating the present invention, without the present invention described in detail in claims should will not be limited.
Embodiment 1
In epoxy resin production process described in the specific embodiment of the invention in haline water extract glycerol the following steps are included:
(1), it single extraction: takes in 200mL epoxy resin production process by the salt water mother liquor of (10-15 times) is concentrated repeatedly, is added
200mL concentration is 99.7% ethyl alcohol, and 22 DEG C (room temperature) at a temperature of stir 15min, stand 120min, supernatant liquor is clear
Liquid is collected into liquid trap；(2), reextraction: 99.7% ethyl alcohol 200mL of concentration extraction is continuously added, is stirred between 22 DEG C
15min is standing 120min, supernatant liquor clear liquid is collected into the liquid trap, leaves mixed liquor and crystallization；(3), it is concentrated
Crystallization: by centrifugation, liquid phase is recovered to the liquid trap for mixed liquor and crystallization, and crystal is returned to multiple-effect evaporation or MVR again
Secondary condensing crystallizing is centrifuged, is dried to Nacl；(4), essence slips purification: the liquid in the liquid trap is connect according to ethyl alcohol purification method
It carries out ethyl alcohol essence and slips purification, content is controlled 90~95%；(5), glycerol purifies: the mixture after rectification and purification being utilized sweet
Oily method of purification purification recycling；(6), dangerous waste is handled: the residue after glycerol is purified send biochemical treatment or burning.
Embodiment 2
In epoxy resin production process described in the specific embodiment of the invention in haline water extract glycerol the following steps are included:
(1), it single extraction: takes in 200mL epoxy resin production process by the salt water mother liquor of (10-15 times) is concentrated repeatedly, is added
300mL concentration is 95% ethyl alcohol, and 20 DEG C at a temperature of stir 10min, stand 120min, supernatant liquor clear liquid be collected into
Liquid trap；(2), reextraction: 95% ethyl alcohol 200mL of concentration extraction is continuously added, 10min is stirred between 20 DEG C, is standing
Supernatant liquor clear liquid is collected into the liquid trap, leaves mixed liquor and crystallization by 90min；(3), condensing crystallizing: mixed liquor and knot
For crystalline substance by centrifugation, liquid phase is recovered to the liquid trap, by crystal return multiple-effect evaporation or MVR again condensing crystallizing, centrifugation,
It is dried to Nacl；(4), essence slips purification: the liquid in the liquid trap is connect and slips purification according to ethyl alcohol purification method progress ethyl alcohol essence,
Content is controlled 90~95%；(5), glycerol purifies: the mixture after rectification and purification is utilized the purification recycling of glycerol method of purification；
(6), dangerous waste is handled: the residue after glycerol is purified send biochemical treatment or burning.
Embodiment 3
In epoxy resin production process described in the specific embodiment of the invention in haline water extract glycerol the following steps are included:
(1), it single extraction: takes in 200mL epoxy resin production process by the salt water mother liquor of (10-15 times) is concentrated repeatedly, is added
350mL concentration is 90% ethyl alcohol, and 25 DEG C at a temperature of stir 10min, stand 120min, supernatant liquor clear liquid be collected into
Liquid trap；(2), reextraction: 90% ethyl alcohol 250mL of concentration extraction is continuously added, 10min is stirred between 25 DEG C, is standing
Supernatant liquor clear liquid is collected into the liquid trap, leaves mixed liquor and crystallization by 120min；(3), condensing crystallizing: mixed liquor and
By centrifugation, liquid phase is recovered to the liquid trap for crystallization, by crystal return multiple-effect evaporation or MVR again condensing crystallizing, from
The heart is dried to Nacl；(4), essence slips purification: the liquid in the liquid trap being connect and carries out ethyl alcohol essence according to ethyl alcohol purification method and slips and mention
Pure, content is controlled 90~95%；(5), glycerol purifies: the mixture after rectification and purification is purified back using glycerol method of purification
It receives；(6), dangerous waste is handled: the residue after glycerol is purified send biochemical treatment or burning.
In conclusion salt water extraction glycerol will be with high salt useless in epoxy resin production process in the epoxy resin production process
The salt of water extracts completely, and total amount of residual materials is small, can meet the requirement of environmental protection production completely with biochemical treatment or burning.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in embodiment only
Illustrate only with closely related structure and/or processing step according to the solution of the present invention, and be omitted with relationship of the present invention not
Big other details.
Finally, it is to be noted that, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.
Claims (6)
1. extracting glycerol in haline water in a kind of epoxy resin production process, it is characterised in that specific step is as follows: (1), once
Extraction: in the mother liquor of high-salt wastewater containing epoxy resin after concentration is added as the first extractant in ethyl alcohol, standing after stirring, will be upper
Layer clear liquid clear liquid is collected into liquid trap；(2), reextraction: ethyl alcohol is continuously added as the second extractant, repeats to stand after stirring
Movement, supernatant liquor clear liquid is collected into the liquid trap, leaves mixed liquor and crystallization；(3), condensing crystallizing: mixed liquor and
Crystallization is handled by centrifuge, and liquid phase is recovered to the liquid trap, and crystal is returned to multiple-effect evaporation or knot is concentrated in MVR again
Crystalline substance is centrifuged, is dried to Nacl；(4), essence slips purification: the liquid in the liquid trap being connect and carries out ethyl alcohol according to ethyl alcohol purification method
Essence slips purification；(5), glycerol purifies: the mixture after rectification and purification is utilized the purification recycling of glycerol method of purification；(6), at dangerous waste
Reason: the residue after glycerol is purified send biochemical treatment or burning.
2. extracting glycerol in haline water in epoxy resin production process according to claim 1, it is characterised in that: step
(1) cycles of concentration of the mother liquor of high-salt wastewater containing epoxy resin described in is 10-15 times.
3. extracting glycerol in haline water in epoxy resin production process according to claim 1, it is characterised in that: described
One extractant and the second extractant are the ethyl alcohol of 90-99.7%.
4. extracting glycerol in haline water in epoxy resin production process according to claim 1, it is characterised in that: described
The volume of one extractant and the second extractant is 1-3 times of the mother liquor volume of high-salt wastewater containing epoxy resin after the concentration.
5. extracting glycerol in haline water in epoxy resin production process according to claim 1, it is characterised in that: described to stir
The time mixed is 10-20min, and the temperature of the stirring is 18-75 DEG C, and the time of the standing is 90-180min.
6. extracting glycerol in haline water in epoxy resin production process according to claim 1, it is characterised in that: step
(4) it is 90-95% that essence described in, which slips the concentration of alcohol after purification,.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811519920.9A CN109824191A (en) | 2018-12-12 | 2018-12-12 | Glycerol is extracted in haline water in epoxy resin production process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811519920.9A CN109824191A (en) | 2018-12-12 | 2018-12-12 | Glycerol is extracted in haline water in epoxy resin production process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792832A (en) * | 2005-12-05 | 2006-06-28 | 江苏三木集团有限公司 | Treating waste water containing salt of epoxy resin and recovering salt thereof |
| CN102503014A (en) * | 2011-11-22 | 2012-06-20 | 浙江大学 | Treatment method of glycerin wastewater containing salt |
| CN104326872A (en) * | 2014-10-11 | 2015-02-04 | 波鹰(厦门)科技有限公司 | Method for recycling glycerol in organic wastewater with high salt content |
| CN206843265U (en) * | 2017-03-17 | 2018-01-05 | 黄山清源环境工程技术服务有限公司 | High concentration epoxy resin waste-water processing unit |
| CN208151005U (en) * | 2018-03-05 | 2018-11-27 | 南通星辰合成材料有限公司 | A kind of epoxy resin high-salt wastewater concentration purification system |
-
2018
- 2018-12-12 CN CN201811519920.9A patent/CN109824191A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792832A (en) * | 2005-12-05 | 2006-06-28 | 江苏三木集团有限公司 | Treating waste water containing salt of epoxy resin and recovering salt thereof |
| CN102503014A (en) * | 2011-11-22 | 2012-06-20 | 浙江大学 | Treatment method of glycerin wastewater containing salt |
| CN104326872A (en) * | 2014-10-11 | 2015-02-04 | 波鹰(厦门)科技有限公司 | Method for recycling glycerol in organic wastewater with high salt content |
| CN206843265U (en) * | 2017-03-17 | 2018-01-05 | 黄山清源环境工程技术服务有限公司 | High concentration epoxy resin waste-water processing unit |
| CN208151005U (en) * | 2018-03-05 | 2018-11-27 | 南通星辰合成材料有限公司 | A kind of epoxy resin high-salt wastewater concentration purification system |
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