CN203474695U - DMF (dimethyl formamide) purification device - Google Patents
DMF (dimethyl formamide) purification device Download PDFInfo
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- CN203474695U CN203474695U CN201320543642.7U CN201320543642U CN203474695U CN 203474695 U CN203474695 U CN 203474695U CN 201320543642 U CN201320543642 U CN 201320543642U CN 203474695 U CN203474695 U CN 203474695U
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- dmf
- tower
- pipeline
- separation tower
- rectifying separation
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Abstract
The utility model discloses a DMF (dimethyl formamide) purification device comprising a crude DMF evaporator, wherein the upper part of the crude DMF evaporator is connected to a distillation separation tower through a pipeline; a Celtic reboiler is arranged at the bottom of the distillation separation tower; the middle-lower part of the distillation separation tower is connected with a DMF product tank through a pipeline; a tower condenser is arranged at the top of the distillation separation tower; a condensed liquid is conveyed into a condensate tank through a pipeline. The DMF purification device disclosed by the utility model can be used for separating heavy components from light components and non-condensable gas in crude DMF effectively to obtain high-purity DMF through purification.
Description
Technical field
The utility model relates to a kind of DMF purifying plant.
Background technology
Dimethylamine and CO be synthetic DMF under the effect of catalyzer, obtains after filtering thick DMF, wherein contains the non-condensable gases such as CO, N2; Dimethylamine, the light constituents such as methyl alcohol; And the heavy constituent such as MMF, DMAC, must just can obtain high purity DMF by separation.
Summary of the invention
The purpose of this utility model is to provide a kind of purifying plant that can separated obtain high purity DMF.
DMF purifying plant of the present utility model, comprise thick DMF vaporizer, the top of described thick DMF vaporizer is connected to rectifying separation tower by pipeline, at the bottom of the tower of described rectifying separation tower, be provided with Kai Erteshi reboiler, the middle and lower part of rectifying separation tower connects DMF products pot by pipeline, the tower top of rectifying separation tower is provided with tower condenser, and condensed liquid arrives in condensation liquid bath by Pipeline transport.
Described tower condenser is connected to tower tail cooler by pipeline.
Described tower tail cooler is connected to rectifying separation tower by return line.
The outlet of described Kai Erteshi reboiler is connected to heavy constituent groove by pipeline.
The utility model is when application, and thick DMF enters rectifying separation tower middle part after vaporizer gasification, and Kai Erteshi reboiler is set at the bottom of tower reactor.Tower top steams gas and makes light constituent condensation by tower condenser and tail cooler, enters condensation liquid bath, and part refluxes as rectifying tower, and all the other get back to DMF synthesis system; Tail cooler low temperature noncondensable gas out and the CO unstripped gas heat exchange of synthesis system, can reduce CO purification PSA system inlet temperature, improves fractionation by adsorption effect, realizes the recovery of cold and tail gas; The extraction above the first layer filler on reboiler top of pure DMF steam, heat is reclaimed in the further heat exchange of the DMF of condensation and synthetic outlet material, and last water cooling heat exchanger is down to 40 ℃, enters DMF product groove; Heavy constituent is enrichment in Kai Erteshi reboiler, finally from bottom, is discharged to heavy constituent groove, therefore through processing of the present utility model, can access highly purified DMF.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, thick DMF vaporizer; 2, rectifying separation tower; 3, tower condenser; 4, tower tail cooler; 5, condensation liquid bath; 6, DMF products pot; 7, Kai Erteshi reboiler; 8, heavy constituent groove.
Embodiment
As shown in Figure 1, a kind of DMF purifying plant of the present utility model, comprise thick DMF vaporizer 1, top at thick DMF vaporizer 1 is connected to rectifying separation tower 2 by pipeline, at the bottom of the tower of rectifying separation tower 2, be provided with Kai Erteshi reboiler 7, middle and lower part at rectifying separation tower 2 connects DMF products pot 6 by pipeline, and the tower top of rectifying separation tower 2 is also provided with tower condenser 3, and condensed liquid arrives in condensation liquid bath 5 by Pipeline transport; Described tower condenser 3 is connected to tower tail cooler 4 by pipeline, tower top steams gas and makes light constituent condensation by tower condenser and tower tail cooler, enter condensation liquid bath, tower tail cooler 4 is connected to rectifying separation tower 2 by return line, partial condensation liquid refluxes as rectifying tower, and all the other get back to DMF synthesis system, tower tail cooler low temperature noncondensable gas out and the CO unstripped gas heat exchange of synthesis system, can reduce CO purification PSA system inlet temperature, improve fractionation by adsorption effect; The outlet of described Kai Erteshi reboiler 7 is connected to heavy constituent groove 8 by pipeline.Use of the present utility model can be effectively separated with light constituent and non-condensable gas by the heavy constituent in thick DMF, thereby purify, obtains highly purified DMF.
Claims (4)
1. a DMF purifying plant, comprise thick DMF vaporizer (1), it is characterized in that, the top of described thick DMF vaporizer (1) is connected to rectifying separation tower (2) by pipeline, at the bottom of the tower of described rectifying separation tower (2), be provided with Kai Erteshi reboiler (7), the middle and lower part of rectifying separation tower (2) connects DMF products pot (6) by pipeline, and the tower top of rectifying separation tower (2) is provided with tower condenser (3), and condensed liquid arrives in condensation liquid bath (5) by Pipeline transport.
2. DMF purifying plant as claimed in claim 1, is characterized in that, described tower condenser (3) is connected to tower tail cooler (4) by pipeline.
3. DMF purifying plant as claimed in claim 1, is characterized in that, described tower tail cooler (4) is connected to rectifying separation tower (2) by return line.
4. DMF purifying plant as claimed in claim 1, is characterized in that, the outlet of described Kai Erteshi reboiler (7) is connected to heavy constituent groove (8) by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320543642.7U CN203474695U (en) | 2013-09-03 | 2013-09-03 | DMF (dimethyl formamide) purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320543642.7U CN203474695U (en) | 2013-09-03 | 2013-09-03 | DMF (dimethyl formamide) purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203474695U true CN203474695U (en) | 2014-03-12 |
Family
ID=50223066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320543642.7U Expired - Fee Related CN203474695U (en) | 2013-09-03 | 2013-09-03 | DMF (dimethyl formamide) purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203474695U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105017054A (en) * | 2015-07-07 | 2015-11-04 | 天津大学 | Solvent recovering system for DMF (Dimethyl Formamide) saliferous wastewater |
| CN110747026A (en) * | 2019-10-12 | 2020-02-04 | 浙江大学 | System and method for preparing LNG (liquefied Natural gas) from oxygen-containing coal bed gas based on thermoacoustic technology |
-
2013
- 2013-09-03 CN CN201320543642.7U patent/CN203474695U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105017054A (en) * | 2015-07-07 | 2015-11-04 | 天津大学 | Solvent recovering system for DMF (Dimethyl Formamide) saliferous wastewater |
| CN105017054B (en) * | 2015-07-07 | 2017-01-11 | 天津大学 | Solvent recovering system for DMF (Dimethyl Formamide) saliferous wastewater |
| CN110747026A (en) * | 2019-10-12 | 2020-02-04 | 浙江大学 | System and method for preparing LNG (liquefied Natural gas) from oxygen-containing coal bed gas based on thermoacoustic technology |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20160903 |