CN202246486U - Refining device of dimethyl carbonate with high purity - Google Patents
Refining device of dimethyl carbonate with high purity Download PDFInfo
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- CN202246486U CN202246486U CN2011203332405U CN201120333240U CN202246486U CN 202246486 U CN202246486 U CN 202246486U CN 2011203332405 U CN2011203332405 U CN 2011203332405U CN 201120333240 U CN201120333240 U CN 201120333240U CN 202246486 U CN202246486 U CN 202246486U
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Abstract
The utility model discloses a refining device of dimethyl carbonate with high purity, and the refining device comprises a raw material tank which is used for holding dimethyl carbonate; an outlet of the raw material tank is connected with a fractionating column; the fractionating column is connected with a return tank; the outlet end of the return tank is respectively connected with an initial fraction buffer tank and a main fraction buffer tank; and the outlet ends of the initial fraction buffer tank and the main fraction buffer tank are both connected with a finished product tank. The refining device provided by the utility model has simple structure and convenient use; it can be used for preparing dimethyl carbonate with high purity and removing impurities; as a result, color change is avoided, and yield of high purity products is enhanced.
Description
Technical field
The utility model relates to a kind of equipment for preparing methylcarbonate, is a kind of preparing high purity dimethyl carbonate device concretely.
Background technology
Methylcarbonate be a kind of nontoxic, environmental-protecting performance is excellent, broad-spectrum industrial chemicals; It is a kind of important organic synthesis intermediate; Contain functional groups such as carbonyl, methyl and methoxyl group in the molecular structure; Have multiple reactivity worth, have aborning safe in utilization, convenient, pollute less, characteristics such as transportation easily.Because methylcarbonate toxicity is less, is a kind of " green " Chemicals with development prospect.During normal temperature a kind of water white transparency, summary scent of, little sweet liquid, 4 ℃ of fusing points, 90.1 ℃ of boiling points, density 1.069g/cm
3, be insoluble in water, but can with nearly all immiscible organic solvents such as alcohol, ether, ketone.The now general Technology scale prodn methylcarbonate that adopts with ester-interchange method, the higher part of yield is the top grade article of purity about 99.98%, but that existing equipment makes purity reach high-purity article yield of 99.99% is lower.Because of containing impurity, also there is the situation of methylcarbonate variable color simultaneously.
The utility model content
The purpose of the utility model is exactly the defective that exists to prior art, provides a kind of simple in structure, easy to use, can prepare the high purity carbon dimethyl phthalate, and can remove impurity, thereby prevent the preparing high purity dimethyl carbonate device of variable color.
Its technical scheme is: the preparing high purity dimethyl carbonate device; Comprise the head tank that is used for the splendid attire methylcarbonate; The outlet of said head tank is connected with rectifying tower; Be connected with return tank on the said rectifying tower, the exit end of said return tank is connected with just gold-plating surge tank and main gold-plating surge tank respectively, and the exit end of said gold-plating surge tank just and main gold-plating surge tank all is connected with the finished product jar.
Be provided with condensing surface between said rectifying tower and the said return tank.
Said gold-plating surge tank just comprises the first first gold-plating surge tank and second gold-plating surge tank just, and the said first first gold-plating surge tank and second just is provided with the molecular sieve column that is used to remove impurity between the gold-plating surge tank.
Said main gold-plating surge tank comprises the first main gold-plating surge tank and the second main gold-plating surge tank, is provided with the molecular sieve column that is used to remove impurity between the said first main gold-plating surge tank and the second main gold-plating surge tank.
The exit end of the said first main gold-plating surge tank is connected with head tank through pipeline.
After having adopted technique scheme, the beneficial effect that the utility model is obtained is: the utility model is simple in structure, and is easy to use, can prepare the high purity carbon dimethyl phthalate, and can remove impurity, thereby prevents variable color, improved high-purity article yield.
Description of drawings
Accompanying drawing is the structural representation of a kind of embodiment of the utility model.
Embodiment
Shown in accompanying drawing; The preparing high purity dimethyl carbonate device; Comprise the head tank 1 that is used for the splendid attire methylcarbonate, the outlet of said head tank 1 is connected with rectifying tower 2, is connected with return tank 3 on the said rectifying tower 2; The exit end of said return tank 3 is connected with just gold-plating surge tank and main gold-plating surge tank respectively, and the exit end of said gold-plating surge tank just and main gold-plating surge tank all is connected with finished product jar 4.
Be provided with condensing surface 5 between said rectifying tower 2 and the said return tank 3.
Said gold-plating surge tank just comprises the first first gold-plating surge tank 6 and second gold-plating surge tank 7 just, and the said first first gold-plating surge tank 6 and second just is provided with the molecular sieve column 8 that is used to remove impurity between the gold-plating surge tank 7.
Said main gold-plating surge tank comprises the first main gold-plating surge tank 9 and the second main gold-plating surge tank 10, is provided with the molecular sieve column 8 that also is used to remove impurity between the said first main gold-plating surge tank 9 and the second main gold-plating surge tank 10.
The exit end of the said first main gold-plating surge tank 9 is connected with head tank 1 through pipeline.The product that does not reach purity can carry out re-treatment for incoming stock again jar 1.
During use, methylcarbonate, gets into rectifying tower 2 and carries out atmospheric distillation through the pump pressurization from head tank 1.Through after the total reflux of certain hour, the fore-running product of 15%-30% gets into the first fore-running surge tank 6, and the direct entering second fore-running surge tank 7 that purity reaches more than 99.95 is handled in the direct entering in the back finished product jar 4; And purity can reach the top grade methylcarbonate passing through below 99.95 after molecular sieve column 8 separating methanols are handled, and finally gets into finished product jar 4.Purity can reach more than 99.98% after the fore-running article removed impurity through molecular sieve column 8.
Master after 30% heats up in a steamer product and gets into the first main surge tank 9 that heats up in a steamer, and entering second master that purity reaches more than 99.993% heats up in a steamer surge tank 10, directly gets in the finished product jar 4 after treatment; And purity is taken off the final finished product jar 4 that gets in impurity processing back at the molecular sieve column 8 that passes through below 99.993%.Purity can reach more than 99.995% after main gold-plating product removed impurity through molecular sieve column 8.
Can be high-purity article of DMC addition 99.995% with the top grade article methylcarbonate of DMC addition 99.98% is refining through the utility model; High-purity methylcarbonate yield is more than 70%, and fore-running product 15% can reach the top grade methylcarbonate after handling through the molecular sieve column separating methanol.After the rectifying, the master heats up in a steamer product impurity and obviously reduces, and product purity is highly improved, and along with the minimizing of product impurity, the discoloration problem of methylcarbonate has obtained solution equally.
The utility model is simple in structure, and is easy to use, can prepare the high purity carbon dimethyl phthalate, and can remove impurity, thereby prevents variable color, improved high-purity article yield.
Claims (5)
1. preparing high purity dimethyl carbonate device; Comprise the head tank that is used for the splendid attire methylcarbonate; It is characterized in that: the outlet of said head tank is connected with rectifying tower; Be connected with return tank on the said rectifying tower, the exit end of said return tank is connected with just gold-plating surge tank and main gold-plating surge tank respectively, and the exit end of said gold-plating surge tank just and main gold-plating surge tank all is connected with the finished product jar.
2. preparing high purity dimethyl carbonate device according to claim 1 is characterized in that: be provided with condensing surface between said rectifying tower and the said return tank.
3. preparing high purity dimethyl carbonate device according to claim 1; It is characterized in that: said gold-plating surge tank just comprises the first first gold-plating surge tank and second gold-plating surge tank just, and the said first first gold-plating surge tank and second just is provided with the molecular sieve column that is used to remove impurity between the gold-plating surge tank.
4. preparing high purity dimethyl carbonate device according to claim 1; It is characterized in that: said main gold-plating surge tank comprises the first main gold-plating surge tank and the second main gold-plating surge tank, is provided with the molecular sieve column that is used to remove impurity between the said first main gold-plating surge tank and the second main gold-plating surge tank.
5. preparing high purity dimethyl carbonate device according to claim 4 is characterized in that: the exit end of the said first main gold-plating surge tank is connected with head tank through pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203332405U CN202246486U (en) | 2011-08-31 | 2011-08-31 | Refining device of dimethyl carbonate with high purity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203332405U CN202246486U (en) | 2011-08-31 | 2011-08-31 | Refining device of dimethyl carbonate with high purity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202246486U true CN202246486U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203332405U Expired - Lifetime CN202246486U (en) | 2011-08-31 | 2011-08-31 | Refining device of dimethyl carbonate with high purity |
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| CN (1) | CN202246486U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399629A (en) * | 2015-11-27 | 2016-03-16 | 铜陵金泰化工股份有限公司 | Refining method and device for high-purity DMC (dimethyl carbonate) |
| CN105418430A (en) * | 2015-12-16 | 2016-03-23 | 东营市海科新源化工有限责任公司 | Device and method for preparing high-purity dimethyl carbonate through batch rectification |
| CN111454152A (en) * | 2020-06-22 | 2020-07-28 | 东营市海科新源化工有限责任公司 | Preparation method and preparation device of electronic grade dimethyl carbonate |
| CN113121346A (en) * | 2019-12-31 | 2021-07-16 | 上海华谊能源化工有限公司 | Purification method of electronic grade dimethyl carbonate |
-
2011
- 2011-08-31 CN CN2011203332405U patent/CN202246486U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399629A (en) * | 2015-11-27 | 2016-03-16 | 铜陵金泰化工股份有限公司 | Refining method and device for high-purity DMC (dimethyl carbonate) |
| CN105418430A (en) * | 2015-12-16 | 2016-03-23 | 东营市海科新源化工有限责任公司 | Device and method for preparing high-purity dimethyl carbonate through batch rectification |
| CN113121346A (en) * | 2019-12-31 | 2021-07-16 | 上海华谊能源化工有限公司 | Purification method of electronic grade dimethyl carbonate |
| CN111454152A (en) * | 2020-06-22 | 2020-07-28 | 东营市海科新源化工有限责任公司 | Preparation method and preparation device of electronic grade dimethyl carbonate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
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| CX01 | Expiry of patent term |