CN202766438U - Methyl ethyl carbonate production device with automatic DCS (data communication system) - Google Patents
Methyl ethyl carbonate production device with automatic DCS (data communication system) Download PDFInfo
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- CN202766438U CN202766438U CN 201220472667 CN201220472667U CN202766438U CN 202766438 U CN202766438 U CN 202766438U CN 201220472667 CN201220472667 CN 201220472667 CN 201220472667 U CN201220472667 U CN 201220472667U CN 202766438 U CN202766438 U CN 202766438U
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- tower
- transesterification reaction
- reaction tower
- condenser
- methyl ethyl
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Abstract
The utility model provides a methyl ethyl carbonate production device with an automatic DCS (data communication system). 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 feed port and an absolute ethyl alcohol feed port through buffer tanks, the top of the ester exchange reaction tower is connected with a 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 the ester exchange reaction tower and the buffer tanks are connected with the automatic DCS. The production device is reasonable in structural design, continuous feed reaction, separation and purification processes can be realized, the match ratio and flow of dimethyl carbonate and absolute ethyl alcohol serving as reaction raw materials are effectively controlled by the buffer tanks, and the utilization rate of the reaction raw materials is effectively increased by an additionally arranged fraction tank. The production process of methyl ethyl carbonate is automatically controlled by the automatic DCS.
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 unit of Methyl ethyl carbonate of the DCS of having automatic control system.
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 unit of Methyl ethyl carbonate of the DCS of having automatic control system.
The utility model provides a kind of production unit of Methyl ethyl carbonate of the DCS of having automatic control system, this production unit comprises the transesterification reaction tower, the feed end of this transesterification reaction tower by surge tank respectively with the dimethyl carbonate opening for feed, the dehydrated alcohol opening for feed is connected, the transesterification reaction tower is provided with catalyst charging hole, the top of transesterification reaction tower is connected with the first condenser, connect respectively methanol collection device by the first condenser, 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 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, the 3rd condenser connects respectively the Methyl ethyl carbonate collection device, the diethyl carbonate collection device, described transesterification reaction tower all is connected with the DCS automatic control system with surge tank, and the bottom of described transesterification reaction tower is connected with the combustion-type boiler.
Described DCS automatic control system comprises transesterification reaction tower real time monitoring apparatus and intelligent flow control device, and described transesterification reaction tower real time monitoring apparatus is connected with the transesterification reaction tower, and described intelligent flow control device is connected with surge tank
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 production unit of the Methyl ethyl carbonate with DCS automatic control system that the utility model proposes, its reasonable in design, can realize continuously feeding reaction, separation, purification process, and the cooperation of effectively controlling reaction raw materials methylcarbonate and dehydrated alcohol by surge tank flow when, the utilization ratio of the reaction raw materials that effectively improves by the distillate drum set up simultaneously also adopts the DCS automatic control system to finish the production process of the Methyl ethyl carbonate of automatic control in the utility model.
Description of drawings
Fig. 1 is the structural representation of the production unit of the Methyl ethyl carbonate with DCS automatic control system that provides of the utility model.
Among the figure: 1-transesterification reaction tower; The 2-surge tank; 3-dimethyl carbonate opening for feed; 4-dehydrated alcohol opening for feed; The 5-catalyst charging hole; 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; The 15-cooling tower; 16-combustion-type boiler; The 17-DCS automatic control system.
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 unit of Methyl ethyl carbonate of the DCS of having automatic control system, 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 is connected with dimethyl carbonate opening for feed 3, dehydrated alcohol opening for feed 4 respectively by surge tank 2, can finish the when control of flow of cooperation of dimethyl carbonate and dehydrated alcohol by surge tank 2.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, 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 in the transesterification reaction tower 1 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, make the cut in the distillate drum 8 return to participation 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, restructuring after in purification tower 11 product namely being 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 12 condensations of the 3rd condenser, 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.Transesterification reaction tower 1 bottom is connected with combustion-type boiler 16, obtains the required heat of transesterification reaction by combustion-type boiler 16.Described transesterification reaction tower 1 all is connected with DCS automatic control system 17 with surge tank 2, by response behaviour in the DCS automatic control system 17 Real Time Monitoring transesterification reaction towers 1, this DCS automatic control system 17 comprises transesterification reaction tower real time monitoring apparatus and intelligent flow control device.Wherein transesterification reaction tower real time monitoring apparatus is connected with transesterification reaction tower 1, the intelligent flow control device is connected with surge tank 2, automatically control temperature, pressure in the transesterification reaction tower 1 by transesterification reaction tower real time monitoring apparatus, control in real time flow and the proportioning that surge tank 2 passes into reaction raw materials in the transesterification reaction tower 1 by the intelligent flow control device.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 unit with Methyl ethyl carbonate of DCS automatic control system, it is characterized in that: this production unit comprises the transesterification reaction tower, the feed end of this transesterification reaction tower by surge tank respectively with the dimethyl carbonate opening for feed, the dehydrated alcohol opening for feed is connected, the transesterification reaction tower is provided with catalyst charging hole, the top of transesterification reaction tower is connected with the first condenser, connect respectively methanol collection device by the first condenser, 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 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, the 3rd condenser connects respectively the Methyl ethyl carbonate collection device, the diethyl carbonate collection device, described transesterification reaction tower all is connected with the DCS automatic control system with surge tank, and the bottom of described transesterification reaction tower is connected with the combustion-type boiler.
2. the production unit with Methyl ethyl carbonate of DCS automatic control system according to claim 1, it is characterized in that: described DCS automatic control system comprises transesterification reaction tower real time monitoring apparatus and intelligent flow control device, described transesterification reaction tower real time monitoring apparatus is connected with the transesterification reaction tower, and described intelligent flow control device is connected with surge tank.
3. the production unit with Methyl ethyl carbonate of DCS automatic control system 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 201220472667 CN202766438U (en) | 2012-09-17 | 2012-09-17 | Methyl ethyl carbonate production device with automatic DCS (data communication system) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472667 CN202766438U (en) | 2012-09-17 | 2012-09-17 | Methyl ethyl carbonate production device with automatic DCS (data communication system) |
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| Publication Number | Publication Date |
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| CN202766438U true CN202766438U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220472667 Expired - Fee Related CN202766438U (en) | 2012-09-17 | 2012-09-17 | Methyl ethyl carbonate production device with automatic DCS (data communication system) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508473A (en) * | 2013-07-24 | 2014-01-15 | 青海锂业有限公司 | Automatic control method for purification and removal of magnesium in lithium carbonate production |
-
2012
- 2012-09-17 CN CN 201220472667 patent/CN202766438U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508473A (en) * | 2013-07-24 | 2014-01-15 | 青海锂业有限公司 | Automatic control method for purification and removal of magnesium in lithium carbonate production |
| CN103508473B (en) * | 2013-07-24 | 2015-05-13 | 青海锂业有限公司 | Automatic control method for purification and removal of magnesium in lithium carbonate production |
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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 |