CN202766436U - Novel device for producing EMC (ethyl methyl carbonate) - Google Patents
Novel device for producing EMC (ethyl methyl carbonate) Download PDFInfo
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- CN202766436U CN202766436U CN 201220472343 CN201220472343U CN202766436U CN 202766436 U CN202766436 U CN 202766436U CN 201220472343 CN201220472343 CN 201220472343 CN 201220472343 U CN201220472343 U CN 201220472343U CN 202766436 U CN202766436 U CN 202766436U
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- tower
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- feeder
- emc
- transesterification reaction
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Abstract
The utility model provides a novel device for producing EMC (ethyl methyl carbonate). The novel 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 which are heating type feeders, each heating type feeder comprises a heat exchanger and a feed port exchanging heat with the heat exchanger, a first condenser is connected at the top of the ester exchange reaction tower, a discharge end at the bottom end of the ester exchange reaction tower is connected with a feed end of a separation tower, and a discharge end at the bottom of the separation tower is connected with a feed end of a purification tower. The novel device for producing the EMC is reasonable in structural design, and continuous feed ester exchange reaction, separation and purification process can be realized.
Description
Technical field
The utility model relates to a kind of production unit of Methyl ethyl carbonate, is specifically related to the device of a kind of novel production EMC.
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 the device of a kind of novel production EMC, realizes the continuous production of Methyl ethyl carbonate by transesterification reaction tower, knockout tower and the purification tower that connects in turn.
The utility model provides the device of a kind of novel production EMC, this device comprises the transesterification reaction tower, the feed end of this transesterification reaction tower is connected with methylcarbonate feeder, dehydrated alcohol feeder respectively, and described methylcarbonate feeder and dehydrated alcohol feeder are the heating-type feeder; The top of transesterification reaction tower is connected with the first condenser, connect respectively methanol collection device, distillate drum by the first condenser, 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 distillate drum, and 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, and the 3rd condenser connects respectively Methyl ethyl carbonate collection device, diethyl carbonate collection device.Described the first condenser, the second condenser, the 3rd condenser all are connected with cooling tower.
The advantage that the utlity model has is:
The device of a kind of novel production EMC that the utility model proposes, its reasonable in design can realize continuously feeding transesterification reaction, separation, purification process.
Description of drawings
Fig. 1 is the structural representation of the device of a kind of novel production EMC that provides of the utility model.
Among the figure: 1-transesterification reaction tower; The 2-cooling tower; 3-methylcarbonate feeder; 4-dehydrated alcohol feeder; The 5-catalyst feeder; 6-the first condenser; The 7-methanol collection device; The 8-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.
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 the device of a kind of novel production EMC, as shown in Figure 1, comprise transesterification reaction tower 1 in this production unit, the middle part feed end of this transesterification reaction tower 1 respectively with methylcarbonate feeder 3, dehydrated alcohol feeder 4 is connected, described methylcarbonate feeder 3, dehydrated alcohol feeder 4 is the heating-type feeder, the heating-type feeder comprises feed exchanger and the opening for feed that arranges with the feed exchanger heat exchange, makes the methylcarbonate and the dehydrated alcohol that pass in the transesterification reaction tower 1 reach the required temperature of transesterification reaction by feed exchanger.The top of transesterification reaction tower 1 is provided with catalyst charging hole 5, adds the required catalyzer of reaction by catalyst charging hole 5, and 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 and 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 distillate drum 8, by the second condenser 10 with condensed fraction collection to distillate drum 8, and distillate drum 8 also connects the feed end of transesterification reaction tower 1 by pipeline, cut in the 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 and diethyl carbonate collection device 14 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 2.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 (2)
1. the device of a novel production EMC, it is characterized in that: this device comprises the transesterification reaction tower, the feed end of this transesterification reaction tower is connected with methylcarbonate feeder, dehydrated alcohol feeder respectively, and described methylcarbonate feeder and dehydrated alcohol feeder are the heating-type feeder; The top of transesterification reaction tower is connected with the first condenser, connect respectively methanol collection device, distillate drum by the first condenser, 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 distillate drum, and 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, and the 3rd condenser connects respectively Methyl ethyl carbonate collection device, diethyl carbonate collection device.
2. the device of a kind of novel production EMC 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472343 CN202766436U (en) | 2012-09-17 | 2012-09-17 | Novel device for producing EMC (ethyl methyl carbonate) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472343 CN202766436U (en) | 2012-09-17 | 2012-09-17 | Novel device for producing EMC (ethyl methyl carbonate) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202766436U true CN202766436U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220472343 Expired - Fee Related CN202766436U (en) | 2012-09-17 | 2012-09-17 | Novel device for producing EMC (ethyl methyl carbonate) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202766436U (en) |
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2012
- 2012-09-17 CN CN 201220472343 patent/CN202766436U/en not_active Expired - Fee Related
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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 |
|
| EXPY | Termination of patent right or utility model |