CN215462079U - System for preparing fuel ethanol by using low-concentration industrial alcohol - Google Patents
System for preparing fuel ethanol by using low-concentration industrial alcohol Download PDFInfo
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- CN215462079U CN215462079U CN202120961495.XU CN202120961495U CN215462079U CN 215462079 U CN215462079 U CN 215462079U CN 202120961495 U CN202120961495 U CN 202120961495U CN 215462079 U CN215462079 U CN 215462079U
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Abstract
The utility model relates to a system for preparing fuel ethanol by using low-concentration industrial alcohol, which comprises a first coarse distillation tower, a second coarse distillation tower, a rectifying tower and a raw material preheater, wherein the raw material preheater comprises a first preheater and a second preheater which are sequentially connected in series; the top discharge port of the second coarse distillation tower is connected with the feed inlet of the rectifying tower through a coarse wine preheater by a pipeline, the bottom of the first coarse distillation tower and the first coarse distillation reboiler form a closed loop, the bottom of the second coarse distillation tower and the second coarse distillation reboiler form a closed loop, the top discharge port of the rectifying tower is connected with a finished product cooler by the first coarse distillation reboiler and the second coarse distillation reboiler by pipelines respectively, and the bottom of the rectifying tower and the rectifying reboiler form a closed loop. The consumption of steam is reduced, the consumption of circulating water is reduced, and the energy-saving effect is obvious.
Description
Technical Field
The utility model relates to the technical field of ethanol production, in particular to a system for preparing fuel ethanol by using low-concentration industrial alcohol.
Background
The existing distillation process and distillation equipment are complex and high in cost, mainly aim at producing fuel ethanol from high-concentration fermented mash, and if the distillation process and distillation equipment are applied to producing fuel ethanol from low-concentration fermented mash, the aim of saving energy and reducing consumption is not met. Therefore, an apparatus for preparing fuel ethanol from low-concentration industrial alcohol with simple process and low cost is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a system for preparing fuel ethanol by using low-concentration industrial alcohol, aiming at the defects of the prior art.
The utility model is realized by the following technical scheme, and provides a system for preparing fuel ethanol by using low-concentration industrial alcohol, which comprises a first coarse distillation tower, a second coarse distillation tower, a rectifying tower and a raw material preheater, wherein the raw material preheater comprises a first preheater and a second preheater which are sequentially connected in series, a discharge port of a raw material tank is connected with a middle feed inlet of the first coarse distillation tower through a first preheater and the second preheater by pipelines, and a top discharge port of the first coarse distillation tower is connected with a middle feed inlet of the second coarse distillation tower by a pipeline; the top discharge port of the second coarse distillation tower is connected with the feed inlet of the rectifying tower through a coarse wine preheater by a pipeline, the bottom of the first coarse distillation tower and the first coarse distillation reboiler form a closed loop, the bottom of the second coarse distillation tower and the second coarse distillation reboiler form a closed loop, the top discharge port of the rectifying tower is connected with a finished product cooler by the first coarse distillation reboiler and the second coarse distillation reboiler by pipelines respectively, and the bottom of the rectifying tower and the rectifying reboiler form a closed loop.
Preferably, the liquid outlet of the tower bottom of the first coarse distillation tower is connected with a wine tank treatment system through a second preheater by a pipeline.
Preferably, the liquid outlet of the second coarse distillation tower is connected with the feed inlet at the upper part of the first coarse distillation tower through a first preheater by a pipeline.
Preferably, the liquid outlet of the tower bottom of the rectifying tower is connected with a sewage treatment system through a crude wine preheater by a pipeline.
Preferably, the outlet end of the middle part of the rectifying tower is connected with the fusel oil separator through a pipeline.
Preferably, the rectification reboiler is connected with the saturated steam pipeline through a pipeline.
The utility model has the beneficial effects that:
according to the utility model, one fine tower drives two coarse towers, and the two coarse towers are mutually preheated through thermal coupling, so that the consumption of steam is reduced, the consumption of circulating water is reduced, and the energy-saving effect is obvious.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
shown in the figure:
1. the device comprises a first coarse distillation tower, a second coarse distillation tower, a rectifying tower, a first preheater, a second preheater, a vinasse processing system, a second preheater, a vinasse processing system, a first coarse distillation reboiler, a second coarse distillation reboiler, a finished product cooler, a sewage processing system, a fusel oil separator, a second coarse distillation reboiler, a third coarse distillation reboiler, a fourth coarse distillation reboiler, a fifth coarse distillation reboiler, a sixth step of rectifying the second coarse distillation reboiler, a sixth step of the second coarse distillation tower, a sixth step of rectifying the second coarse distillation reboiler, a sixth step of the second rectifying tower, a second coarse distillation reboiler, a second coarse distillation tower, a second rectifying tower, 7, a second coarse distillation reboiler, a finished product cooler, 11, a sewage processing system, a second coarse distillation tower, a second coarse distillation reboiler, a second coarse distillation tower, a second crude distillation tower, a second crude distillation tower, a second crude distillation.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1, the present invention comprises a first crude distillation column 1, a second crude distillation column 2, a rectification column 3 and a raw material preheater. The raw material preheater comprises a first preheater 4 and a second preheater 5 which are sequentially connected in series, a discharge port of a raw material tank is connected with a middle feed inlet of the first coarse distillation tower 1 through a pipeline by the first preheater 4 and the second preheater 5, and a discharge port at the top of the first coarse distillation tower 1 is connected with a middle feed inlet of the second coarse distillation tower 2 through a pipeline; the liquid outlet of the first coarse distillation tower 1 is connected with a wine tank treatment system 6 through a second preheater 5 by a pipeline.
The discharge port at the top of the second coarse distillation tower 2 is connected with the feed inlet of the rectifying tower 3 through a coarse wine preheater 7 by a pipeline, and the liquid outlet of the tower kettle of the second coarse distillation tower 2 is connected with the feed inlet at the upper part of the first coarse distillation tower 1 through a first preheater 4 by a pipeline.
The bottom of the first crude distillation tower 1 and a first crude distillation reboiler 8 form a closed loop, and the bottom of the second crude distillation tower 2 and a second crude distillation reboiler 9 form a closed loop. The discharge port at the top of the rectifying tower 3 is respectively connected with a finished product cooler 10 through a first crude distillation reboiler 8 and a second crude distillation reboiler 9 by pipelines. The discharge port of the tower bottom of the rectifying tower 3 is connected with a sewage treatment system 11 through a crude wine preheater 7 by a pipeline, the outlet end of the middle part of the rectifying tower 3 is connected with a fusel oil separator 12 by a pipeline, the bottom of the rectifying tower 3 and a rectifying reboiler 13 form a closed loop, and the rectifying reboiler 13 is connected with a saturated steam pipeline by a pipeline.
Ethanol containing about 4 percent is preheated to 50 ℃ by a first preheater 4 and is preheated to 65 ℃ by a second preheater 5, the ethanol enters a first rough distillation tower 1 and a second rough distillation tower 2 for rough distillation to obtain rough ethanol with the concentration of about 34-40 percent, then the rough ethanol enters a rectifying tower 3 for continuous distillation, waste liquid at the bottom of the rectifying tower 3 is treated by a decontamination water treatment system 11 after passing through a rough alcohol preheater 7, fusel oil is separated from the middle part of the rectifying tower 3 by a fusel oil separator 12, and alcohol steam at the top of the rectifying tower 3 is cooled by a first rough distillation reboiler 8, a second rough distillation reboiler 9 and a finished product cooler 10 to obtain an alcohol finished product with the concentration of more than 95 percent. According to the utility model, one fine tower drives two coarse towers, and the two coarse towers are mutually preheated through thermal coupling, so that the consumption of steam is reduced, the consumption of circulating water is reduced, and the energy-saving effect is obvious.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (6)
1. The system for preparing fuel ethanol by using low-concentration industrial alcohol is characterized in that: the device comprises a first coarse distillation tower, a second coarse distillation tower, a rectifying tower and a raw material preheater, wherein the raw material preheater comprises a first preheater and a second preheater which are sequentially connected in series, a discharge port of a raw material tank is connected with a middle feed inlet of the first coarse distillation tower through the first preheater and the second preheater through a pipeline, and a top discharge port of the first coarse distillation tower is connected with a middle feed inlet of the second coarse distillation tower through a pipeline; the top discharge port of the second coarse distillation tower is connected with the feed inlet of the rectifying tower through a coarse wine preheater by a pipeline, the bottom of the first coarse distillation tower and the first coarse distillation reboiler form a closed loop, the bottom of the second coarse distillation tower and the second coarse distillation reboiler form a closed loop, the top discharge port of the rectifying tower is connected with a finished product cooler by the first coarse distillation reboiler and the second coarse distillation reboiler by pipelines respectively, and the bottom of the rectifying tower and the rectifying reboiler form a closed loop.
2. The system for producing fuel ethanol using low-concentration industrial alcohol according to claim 1, wherein: the liquid outlet of the tower bottom of the first coarse distillation tower is connected with a wine tank treatment system through a second preheater by a pipeline.
3. The system for producing fuel ethanol using low-concentration industrial alcohol according to claim 1, wherein: the liquid outlet of the second coarse distillation tower is connected with the feed inlet at the upper part of the first coarse distillation tower through a first preheater by a pipeline.
4. The system for producing fuel ethanol using low-concentration industrial alcohol according to claim 1, wherein: the liquid outlet of the rectifying tower kettle is connected with a sewage treatment system through a crude wine preheater by a pipeline.
5. The system for producing fuel ethanol using low-concentration industrial alcohol according to claim 1, wherein: the middle outlet end of the rectifying tower is connected with the fusel oil separator through a pipeline.
6. The system for producing fuel ethanol using low-concentration industrial alcohol according to claim 1, wherein: the rectification reboiler is connected with the saturated steam pipeline through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120961495.XU CN215462079U (en) | 2021-05-07 | 2021-05-07 | System for preparing fuel ethanol by using low-concentration industrial alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120961495.XU CN215462079U (en) | 2021-05-07 | 2021-05-07 | System for preparing fuel ethanol by using low-concentration industrial alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215462079U true CN215462079U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120961495.XU Active CN215462079U (en) | 2021-05-07 | 2021-05-07 | System for preparing fuel ethanol by using low-concentration industrial alcohol |
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| Country | Link |
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| CN (1) | CN215462079U (en) |
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2021
- 2021-05-07 CN CN202120961495.XU patent/CN215462079U/en active Active
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