CN209352803U - Dimethyl carbonate recyclable device - Google Patents
Dimethyl carbonate recyclable device Download PDFInfo
- Publication number
- CN209352803U CN209352803U CN201821726482.9U CN201821726482U CN209352803U CN 209352803 U CN209352803 U CN 209352803U CN 201821726482 U CN201821726482 U CN 201821726482U CN 209352803 U CN209352803 U CN 209352803U
- Authority
- CN
- China
- Prior art keywords
- dmc
- tower
- outlet
- return tank
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000012071 phase Substances 0.000 claims abstract description 9
- 238000004064 recycling Methods 0.000 claims abstract description 9
- 239000007791 liquid phase Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000004702 methyl esters Chemical class 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Substances OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to methanol and DMC Azeotrope separation apparatus field, specifically a kind of dimethyl carbonate recyclable device.The DMC recovery tower of mixture intake pipeline is equipped with including top, it is connected by circulation in the recycling tower reboiler of DMC recycling tower bottom, it is connected to the level-one return tank of DMC recovery tower top gas phase outlet, it is connected to the methanol outlet pipeline of DMC recovery tower bottom liquid phases outlet, DMC pressurizing tower, it is connected to the second level return tank of DMC pressurizing tower top gas phase outlet, it is connected by circulation in the pressurization tower reboiler of DMC pressurization tower bottom, it is connected to the DMC medial launder of DMC pressurizing tower bottom liquid phases outlet, fluid inlet is connected on the liquid outlet of level-one return tank at the top of the DMC pressurizing tower, the liquid outlet of second level return tank is connected on mixture intake pipeline.The utility model can industrialize successive rectifying, ensure DMC product purity, facilitate operation, easy to control, low energy consumption, and securely and reliably, structure is simple.
Description
Technical field
The utility model relates to methanol and DMC Azeotrope separation apparatus field, specifically a kind of dimethyl carbonate recycling dress
It sets.
Background technique
The coal-ethylene glycol technological principle that the country uses at present is essentially the same, requires methanol and participates in reacting and generating centainly
The by-product dimethyl carbonate of amount, during DMC industrial separation, since methanol and DMC form binary azeotrope, using common
Rectificating method be difficult to accomplish, the DMC purity isolated only has 45% or so, containing 55% or so methanol, so that carbonic acid two
Methyl esters selling price is low, while also wasting raw material methanol, increases production cost.
Utility model content
The utility model provides a kind of DMC to solve to be difficult to separate methanol with DMC using common rectificating method
Recyclable device.
The utility model is achieved through the following technical solutions: DMC recyclable device, including top is equipped with mixture intake
The DMC recovery tower of pipeline is connected by circulation in the recycling tower reboiler of DMC recycling tower bottom, is connected to DMC recovery tower top gas phase
The level-one return tank of outlet, is connected to the methanol outlet pipeline of DMC recovery tower bottom liquid phases outlet, and DMC pressurizing tower is connected to
The second level return tank of DMC pressurizing tower top gas phase outlet is connected by circulation in the pressurization tower reboiler of DMC pressurization tower bottom, connection
DMC medial launder in the outlet of DMC pressurizing tower bottom liquid phases,
Fluid inlet is connected on the liquid outlet of level-one return tank at the top of the DMC pressurizing tower, and second level return tank goes out liquid
Mouth is connected on mixture intake pipeline.
DMC recyclable device described in the utility model can industrialize successive rectifying, ensure DMC product purity, side
Just it operates, easy to control, low energy consumption, and securely and reliably, structure is simple.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of DMC recyclable device described in the utility model.
In figure: 1- mixture intake pipeline, 2- recycling tower reboiler, 3-DMC recovery tower, 4- level-one return tank, 5-DMC add
Press tower, 6- pressurization tower reboiler, 7- second level return tank, 8-DMC medial launder, 9- methanol outlet pipeline.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
The technical solution of the utility model is described in detail with reference to the accompanying drawing.
DMC recyclable device is equipped with the DMC recovery tower 3 of mixture intake pipeline 1 including top, is connected by circulation and recycles in DMC
The recycling tower reboiler 2 of 3 bottom of tower is connected to the level-one return tank 4 of 3 top gas phase of DMC recovery tower outlet, is connected to DMC and returns
The methanol outlet pipeline 9 of 3 bottom liquid phases of tower outlet is received, DMC pressurizing tower 5 is connected to the two of 5 top gas phase of DMC pressurizing tower outlet
Grade return tank 7, is connected by circulation in the pressurization tower reboiler 6 of 5 bottom of DMC pressurizing tower, is connected to 5 bottom liquid phases of DMC pressurizing tower and goes out
The DMC medial launder 8 of mouth,
The 5 top fluid inlet of DMC pressurizing tower is connected on the liquid outlet of level-one return tank 4, and second level return tank 7 goes out
Liquid mouth is connected on mixture intake pipeline 1.
In the present invention, recycle tower reboiler 2 and be connected by circulation structure are as follows: the inlet of recycling tower reboiler 2 with
Venthole is all connected to 3 bottom of DMC recovery tower.The similarly pressurization tower reboiler 6.Specifically, the DMC recovery tower 3 and DMC
Pressurizing tower 5 is this field existing equipment, and DMC recovery tower 3 described in the utility model and DMC pressurizing tower 5 are purchased from Yang Meiji
Dough construction equipment Manufacturing Co., Ltd.
When specifically used, the mixture of methanol and DMC enter DMC recovery tower 3 by mixture intake pipeline 1, recovered
The steam of tower reboiler 2 heats, and mixture comes out azeotropic by repeatedly part vaporization and condensation, 3 tower top of DMC recovery tower in tower
Object (DMC and methanol almost each half) enters level-one return tank 4 jointly, and the methanol of 3 tower bottom of DMC recovery tower passes through methanol outlet pipe
Road 9 is recovered, and the mixture of level-one return tank 4 enters back into DMC pressurizing tower 5, the steam heating of pressurized tower reboiler 6, in tower
Interior to increase by repeatedly part vaporization and condensation, tower pressure interior force, when reaching 1.5MPa, DMC content only has 7%, DMC in azeotropic mixture
Gas phase (methanol containing 7%DMC) enters in second level return tank 7 in 5 tower of pressurizing tower, and liquid self-flowing in second level return tank 7 is to mixed
It closes object inlet pipeline 1 and continues rectifying, the dimethyl carbonate (DMC) of 5 99.5% or more tower bottom output of DMC pressurizing tower is recovered to
DMC medial launder 8.Since methanol and DMC form azeotropic mixture, azeotropic mixture boiling point is 64 DEG C under normal pressure, and azeotropic mixture group becomes methanol
70%, DMC 30%, but with the raising of pressure, DMC content gradually decreases in azeotropic mixture composition；When pressure reaches 1.5MPa
When, DMC content only has 7% in azeotropic mixture.Methanol and dimethyl carbonate are efficiently separated using the method for changing pressure, carbonic acid two
Methyl esters purity can reach 99.5% or more, that is, purify dimethyl carbonate, improve selling price；Methanol has been recycled again,
Reduce production cost.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (1)
1. dimethyl carbonate recyclable device, which is characterized in that be equipped with the DMC recovery tower of mixture intake pipeline (1) including top
(3), it is connected by circulation in the recycling tower reboiler (2) of DMC recovery tower (3) bottom, is connected to DMC recovery tower (3) top gas phase and goes out
The level-one return tank (4) of mouth is connected to the methanol outlet pipeline (9) of DMC recovery tower (3) bottom liquid phases outlet, DMC pressurizing tower
(5), it is connected to the second level return tank (7) of DMC pressurizing tower (5) top gas phase outlet, is connected by circulation in DMC pressurizing tower (5) bottom
Pressurization tower reboiler (6), be connected to DMC pressurizing tower (5) bottom liquid phases outlet DMC medial launder (8),
Fluid inlet is connected on the liquid outlet of level-one return tank (4) at the top of the DMC pressurizing tower (5), second level return tank (7)
Liquid outlet is connected on mixture intake pipeline (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821726482.9U CN209352803U (en) | 2018-10-24 | 2018-10-24 | Dimethyl carbonate recyclable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821726482.9U CN209352803U (en) | 2018-10-24 | 2018-10-24 | Dimethyl carbonate recyclable device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209352803U true CN209352803U (en) | 2019-09-06 |
Family
ID=67781093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821726482.9U Expired - Fee Related CN209352803U (en) | 2018-10-24 | 2018-10-24 | Dimethyl carbonate recyclable device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209352803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646900A (en) * | 2019-09-09 | 2020-09-11 | 上海浦景化工技术股份有限公司 | Separation system and separation method for dimethyl carbonate and methanol |
| CN117423924A (en) * | 2023-12-19 | 2024-01-19 | 江苏奥克化学有限公司 | Method for recycling solvent by taking waste lithium ion battery electrolyte as raw material |
-
2018
- 2018-10-24 CN CN201821726482.9U patent/CN209352803U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646900A (en) * | 2019-09-09 | 2020-09-11 | 上海浦景化工技术股份有限公司 | Separation system and separation method for dimethyl carbonate and methanol |
| CN117423924A (en) * | 2023-12-19 | 2024-01-19 | 江苏奥克化学有限公司 | Method for recycling solvent by taking waste lithium ion battery electrolyte as raw material |
| CN117423924B (en) * | 2023-12-19 | 2024-04-26 | 江苏奥克化学有限公司 | Method for recycling solvent by taking waste lithium ion battery electrolyte as raw material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190906 |