CN202766437U - Production device for improving purity of EMC (ethyl methyl carbonate) product - Google Patents
Production device for improving purity of EMC (ethyl methyl carbonate) product Download PDFInfo
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- CN202766437U CN202766437U CN 201220472514 CN201220472514U CN202766437U CN 202766437 U CN202766437 U CN 202766437U CN 201220472514 CN201220472514 CN 201220472514 CN 201220472514 U CN201220472514 U CN 201220472514U CN 202766437 U CN202766437 U CN 202766437U
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- emc
- reaction tower
- transesterification reaction
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Abstract
The utility model provides a production device for improving the purity of an EMC (ethyl methyl carbonate) product. The production device comprises an ester exchange reaction tower, a feed end of the ester exchange reaction tower is respectively connected with a dimethyl carbonate feeder and an absolute ethyl alcohol feeder, a first condenser is connected at the top of the ester exchange reaction tower, the ester exchange reaction tower is respectively connected with a methyl alcohol collection device and a first distillate tank through the first condenser, a discharge end at the bottom end of the ester exchange reaction tower is connected with a feed end of a separation tower, a discharge end at the bottom of the separation tower is connected with a feed end of a purification tower, and a second distillate tank is connected to the top end of the purification tower through a third condenser. The production device for improving the purity of the EMC product is reasonable in structural design, continuous feed ester exchange reaction, separation and purification process can be realized, distillate can be circularly treated by the aid of the two distillate tanks, purification and separation effects are improved, and the high-purity EMC product can be produced.
Description
Technical field
The utility model relates to a kind of production unit of Methyl ethyl carbonate, is specifically related to a kind of production equipment of the EMC of raising product purity.
Background technology
Methyl ethyl carbonate (EMC) is the Chemicals of the high added value of rising in recent years, can be used for many filling property batteries, such as lithium metal battery, cosolvent as its non-aqueous electrolyte, can improve the performance of battery, as improve its energy density, increase discharge capability, improve stability in use and security, and because it has methyl and ethyl simultaneously, having the characteristic of methylcarbonate (DMC), diethyl carbonate (DEC) concurrently, also is the solvent of extraordinary spices and intermediate, therefore has broad application prospects.
The synthetic method of EMC mainly contains phosgenation, oxidative carbonylation and ester-interchange method at present, and wherein ester-interchange method is synthetic method comparatively commonly used.Wherein ester-interchange method mainly contains three kinds of approach, is respectively DMC and DEC transesterify, DEC and methyl alcohol transesterify and DMC and ethanol transesterify.Wherein the synthetic EMC of DMC and ethanol transesterify is reversible reaction, raw material DMC and the ethanol of this reaction are the raw material that is easy to get, and resultant methyl alcohol can also be as the raw material of producing DMC, this reaction product toxicity is little, reaction process is without " three wastes ", facility investment is little, and technique is simple, and production purity is high.But be the device of raw material production Methyl ethyl carbonate for available technology adopting methylcarbonate and ethanol, Methyl ethyl carbonate can only pass through rhythmic reaction, batch fractionating and Methyl ethyl carbonate low conversion rate in original production technique; Methyl ethyl carbonate need to through multiple tracks operation at intermittence and device systems, can't satisfy the needs of existing high yield preparation of industrialization Methyl ethyl carbonate from producing product turnover tank.
The utility model content
For problems of the prior art, the utility model provides a kind of production equipment of the EMC of raising product purity.
The utility model provides a kind of production equipment of the EMC of raising product purity, this production equipment comprises the transesterification reaction tower, the feed end of this transesterification reaction tower respectively with the methylcarbonate feeder, the dehydrated alcohol feeder is connected, the top of transesterification reaction tower is connected with the first condenser, connect respectively methanol collection device by the first condenser, the first distillate drum, the bottom discharge end of transesterification reaction tower connects the feed end of knockout tower, the top of knockout tower is connected with the second condenser, the second condenser also links to each other with the first distillate drum, and the first distillate drum connects the feed end of transesterification reaction tower by pipeline, the bottom discharge end of knockout tower connects the purification tower feed end, the top of purification tower is connected with the 3rd condenser, the 3rd condenser connects respectively the Methyl ethyl carbonate collection device, diethyl carbonate collection device and the second distillate drum, the second distillate drum connect the feed end of knockout tower by pipeline.Described the first condenser, the second condenser, the 3rd condenser all are connected with cooling tower.The bottom of described transesterification reaction tower is connected with the combustion-type boiler.
The advantage that the utlity model has is:
The production equipment of a kind of EMC of the raising product purity that the utility model proposes, its reasonable in design, can realize continuously feeding transesterification reaction, separation, purification process, and be designed with two distillate drums in the utility model, can process once again lighting end, to improve the effect of purifying and separating, can produce the higher EMC product of product purity.
Description of drawings
Fig. 1 is the structural representation of the production equipment of a kind of EMC of raising product purity of providing of the utility model.
Among the figure: 1-transesterification reaction tower; 2-the second distillate drum; 3-methylcarbonate feeder; 4-dehydrated alcohol feeder; The 5-catalyst feeder; 6-the first condenser; The 7-methanol collection device; 8-the first distillate drum; The 9-knockout tower; 10-the second condenser; The 11-purification tower; 12-the 3rd condenser; 13-Methyl ethyl carbonate collection device; 14-diethyl carbonate collection device; The 15-cooling tower; 16-combustion-type boiler.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to restriction of the present utility model.
The utility model provides a kind of production equipment of the EMC of raising product purity, as shown in Figure 1, comprise transesterification reaction tower 1 in this production equipment, the middle part feed end of this transesterification reaction tower 1 is connected with methylcarbonate feeder 3, dehydrated alcohol feeder 4 respectively, the top of transesterification reaction tower 1 is provided with catalyst charging hole 5, add the required catalyzer of reaction by catalyst charging hole 5, this catalyzer is preferably sodium ethylate.Wherein the top of transesterification reaction tower 1 is connected with the first condenser 6, connect respectively methanol collection device 7, distillate drum 8 by the first condenser 6, collect the byproduct methyl alcohol of reaction in the transesterification reaction towers 1 by methanol collection device 7, and to collect condensed cut by distillate drum 8 be light constituent.The bottom discharge end of transesterification reaction tower 1 connects the feed end of knockout tower 9, by knockout tower 9 reacted restructuring is separated, the top of knockout tower 9 is connected with the second condenser 10, and the second condenser 10 also is connected with the first distillate drum 8, by condenser with in condensed fraction collection to the first distillate drum 8, and the first distillate drum 8 also connects the feed end of transesterification reaction tower 1 by pipeline, cut in the first distillate drum 8 is namely recombinated minute return to participate in reaction in the transesterification reaction tower 1, be able to effective recycling.The bottom discharge end of knockout tower 9 connects the feed end of purification tower 11, the restructuring that in purification tower 11 knockout tower is separated is divided into row and further purifies, the top of purification tower 11 is connected with the 3rd condenser 12, connect respectively Methyl ethyl carbonate collection device 13, diethyl carbonate collection device 14 and the second distillate drum 2 by the 3rd condenser 12, collect Methyl ethyl carbonate EMC and the diethyl carbonate DEC that after condenser condenses, produces by Methyl ethyl carbonate collection device 13 and diethyl carbonate collection device 14.Wherein the first condenser 6, the second condenser 10, the 3rd condenser 12 all are connected with cooling tower 15, light constituent after the purification is collected into the second distillate drum 2 after by condenser condenses, be connected to the feed end of knockout tower 9 by the pipeline of the second distillate drum 2, proceed to separate by knockout tower 9.Transesterification reaction tower 1 bottom is connected with combustion-type boiler 16, obtains the required heat of transesterification reaction by combustion-type boiler 16.In the production unit of the present utility model, by in transesterification reaction tower 1, knockout tower 9 and purification tower 11, carrying out transesterification reaction, isolation technique and purification techniques in turn, obtain main products Methyl ethyl carbonate of the present utility model, can also obtain methyl alcohol and diethyl carbonate DEC simultaneously.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection domain of the present utility model is not limited to this.Being equal to that those skilled in the art do on the utility model basis substitutes or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (3)
1. production equipment that improves the EMC product purity, it is characterized in that: this production equipment comprises the transesterification reaction tower, the feed end of this transesterification reaction tower respectively with the methylcarbonate feeder, the dehydrated alcohol feeder is connected, the top of transesterification reaction tower is connected with the first condenser, connect respectively methanol collection device by the first condenser, the first distillate drum, the bottom discharge end of transesterification reaction tower connects the feed end of knockout tower, the top of knockout tower is connected with the second condenser, the second condenser also links to each other with the first distillate drum, and the first distillate drum connects the feed end of transesterification reaction tower by pipeline, the bottom discharge end of knockout tower connects the purification tower feed end, the top of purification tower is connected with the 3rd condenser, the 3rd condenser connects respectively the Methyl ethyl carbonate collection device, diethyl carbonate collection device and the second distillate drum, the second distillate drum connect the feed end of knockout tower by pipeline.
2. a kind of production equipment that improves the EMC product purity according to claim 1, it is characterized in that: described the first condenser, the second condenser, the 3rd condenser all are connected with cooling tower.
3. a kind of production equipment that improves the EMC product purity according to claim 1, it is characterized in that: the bottom of described transesterification reaction tower is connected with the combustion-type boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472514 CN202766437U (en) | 2012-09-17 | 2012-09-17 | Production device for improving purity of EMC (ethyl methyl carbonate) product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472514 CN202766437U (en) | 2012-09-17 | 2012-09-17 | Production device for improving purity of EMC (ethyl methyl carbonate) product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202766437U true CN202766437U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220472514 Expired - Fee Related CN202766437U (en) | 2012-09-17 | 2012-09-17 | Production device for improving purity of EMC (ethyl methyl carbonate) product |
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| CN (1) | CN202766437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105541630A (en) * | 2016-01-24 | 2016-05-04 | 辽宁会福化工有限公司 | Method for preparing ethyl methyl carbonate |
-
2012
- 2012-09-17 CN CN 201220472514 patent/CN202766437U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105541630A (en) * | 2016-01-24 | 2016-05-04 | 辽宁会福化工有限公司 | Method for preparing ethyl methyl carbonate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20140917 |
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| EXPY | Termination of patent right or utility model |