CN106495989B - Energy-saving alcohol rough distillation equipment and rough distillation method thereof - Google Patents
Energy-saving alcohol rough distillation equipment and rough distillation method thereof Download PDFInfo
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- CN106495989B CN106495989B CN201610858783.6A CN201610858783A CN106495989B CN 106495989 B CN106495989 B CN 106495989B CN 201610858783 A CN201610858783 A CN 201610858783A CN 106495989 B CN106495989 B CN 106495989B
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- 238000004821 distillation Methods 0.000 title claims abstract description 133
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 21
- 235000013405 beer Nutrition 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005194 fractionation Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides energy-saving alcohol rough distillation equipment which comprises a rough distillation tower, a preheater and a prefractionating tower, wherein an outlet at the top of the rough distillation tower is connected with an inlet of a heat exchanger of the prefractionating tower so as to take the top alcohol vapor of the rough distillation tower as a preheating heat source of the prefractionating tower; the top outlet of the prefractionator is connected with the side inlet of the preheater so as to take the top wine vapor of the prefractionator as the preheating heat source of the fermented mash; the bottom outlet of the preheater is connected with the side inlet of the pre-fractionating tower so as to feed the preheated fermented mash into the pre-fractionating tower for rough distillation, and the bottom outlet of the pre-fractionating tower is connected with the side inlet of the rough distillation tower so as to feed part of the fermented mash in the pre-fractionating tower into the rough distillation tower for rough distillation. The invention also provides an alcohol rough distillation method adopting the alcohol rough distillation equipment. The alcohol rough distillation equipment and the alcohol rough distillation method can reduce the production cost of alcohol.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of alcohol processing production, in particular to alcohol rough distillation equipment and a rough distillation method thereof.
[ background of the invention ]
The alcohol distillation process typically employs a topping column to roughen the beer from the fermentation section to separate the alcohol component from the stillage. In the prior art, during the rough distillation of alcohol, fermented mash enters a rough distillation tower after being preheated by wine gas of the rough distillation tower, alcohol components in the fermented mash are separated from wine lees through distillation, the rough distillation of the whole alcohol is completely finished in the rough distillation tower, the steam consumption of the rough distillation tower is large, and the production cost is high.
[ summary of the invention ]
In view of the above problems, it is desirable to provide an alcohol rough distillation apparatus and a rough distillation method thereof, which can reduce the production cost.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an energy-saving alcohol rough distillation device comprises a rough distillation tower, a preheater and a prefractionating tower, wherein an outlet at the top of the rough distillation tower is connected with an inlet of a heat exchanger of the prefractionating tower so as to take the top alcohol vapor of the rough distillation tower as a preheating heat source of the prefractionating tower; the top outlet of the prefractionator is connected with the side inlet of the preheater so as to take the top wine vapor of the prefractionator as the preheating heat source of the fermented mash; the bottom outlet of the preheater is connected with the side inlet of the pre-fractionating tower so as to feed the preheated fermented mash into the pre-fractionating tower for rough distillation, and the bottom outlet of the pre-fractionating tower is connected with the side inlet of the rough distillation tower so as to feed part of the fermented mash in the pre-fractionating tower into the rough distillation tower for rough distillation.
Further, the alcohol rough distillation equipment also comprises a first condenser, and the inlet of the first condenser is connected with the side outlet of the preheater.
Further, the alcohol rough distillation equipment also comprises a vacuum pump, and the vacuum pump is connected with an outlet of the first condenser.
Further, the alcohol rough distillation equipment also comprises a second condenser, and an inlet of the second condenser is connected with an outlet of the heat exchanger.
An alcohol rough distillation method comprises the following steps:
providing alcohol rough distillation equipment which comprises a rough distillation tower, a preheater and a prefractionating tower, wherein the outlet of the top of the rough distillation tower is connected with the inlet of a heat exchanger of the prefractionating tower; the top outlet of the prefractionator is connected with the side inlet of the preheater; the bottom outlet of the preheater is connected with the side inlet of the prefractionator; the bottom outlet of the prefractionator is connected with the side inlet of the rough distillation tower;
heating the crude distillation tower by using steam;
introducing the tower top alcohol vapor of the crude distillation tower into a heat exchanger of the prefractionator to heat the prefractionator;
introducing fermented mash from a top inlet of the preheater;
introducing the tower top wine vapor of the prefractionator into the preheater to preheat the fermented mash;
passing the preheated beer from a bottom outlet of the preheater to a side inlet of the prefractionator to coarsely distill the preheated beer;
and part of fermented mash in the pre-fractionating tower is introduced into a side inlet of the coarse distillation tower from a tower bottom outlet of the pre-fractionating tower so as to perform coarse distillation on the fermented mash through the coarse distillation tower.
Further, the alcohol rough distillation equipment further comprises a first condenser, wherein an inlet of the first condenser is connected with a side outlet of the preheater, and the alcohol rough distillation method further comprises the step of condensing alcohol gas discharged from the side outlet of the preheater by using the first condenser.
Further, the alcohol rough distillation equipment also comprises a vacuum pump, and the vacuum pump is connected with an outlet of the first condenser to discharge uncondensed gas.
Further, the alcohol rough distillation equipment further comprises a second condenser, wherein an inlet of the second condenser is connected with an outlet of the heat exchanger, and the alcohol rough distillation method further comprises the step of condensing the alcohol gas discharged from an outlet of the heat exchanger by using the second condenser.
Furthermore, the working states of the rough distillation tower and the prefractionator are both negative pressure.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the alcohol rough distillation equipment and the rough distillation method thereof, the pre-distillation tower is added before fermented mash enters the rough distillation tower, and during rough distillation, the fermented mash is dispersed in the pre-distillation tower and the rough distillation tower to be subjected to rough distillation, so that the fermented mash entering the rough distillation tower to be subjected to rough distillation is reduced, therefore, the steam consumption of the rough distillation tower is correspondingly reduced, energy is saved, and the pre-distillation tower adopts the tower top wine gas of the rough distillation tower to heat, and no additional boiler is needed to provide steam, so that the energy utilization rate is improved, and the production cost is reduced.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of an alcohol rough distillation apparatus according to a preferred embodiment of the present invention.
In the attached drawing, 100-alcohol rough distillation equipment; 2-a crude distillation column; 3-a preheater; 4-a prefractionator; 41-heat exchanger; 5-a first condenser; 6-a vacuum pump; 7-second condenser.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of the present invention provides an energy-saving alcohol rough distillation apparatus 100, which includes a rough distillation tower 2, a preheater 3 and a prefractionator 4. The top outlet of the crude distillation tower 2 is connected with the inlet of a heat exchanger 41 of the prefractionator 4, so that the top liquor steam of the crude distillation tower 2 is used as a preheating heat source of the prefractionator 4; the top outlet of the prefractionator 4 is connected with the side inlet of the preheater 3, so that the top wine steam of the prefractionator 4 is used as a preheating heat source of the fermented mash; the bottom outlet of the preheater 3 is connected with the side inlet of the prefractionator 4 so as to send the preheated fermented mash into the prefractionator 4 for rough distillation; the bottom outlet of the prefractionator 4 is connected with the side inlet of the rough distillation tower 2, so that part of fermented mash in the prefractionator 4 is introduced into the rough distillation tower 2 for rough distillation.
In the present embodiment, the alcohol rough distillation apparatus 100 further includes a first condenser 5, and an inlet of the first condenser 5 is connected to a side outlet of the preheater 3 to condense gas coming out of the side outlet of the preheater 3. The alcohol rough distillation apparatus 100 further includes a vacuum pump 6, and the vacuum pump 6 is connected to an outlet of the first condenser 5 to discharge gas that is not condensed in the first condenser 5.
In the present embodiment, the alcohol rough distillation apparatus 100 further includes a second condenser 7, and an inlet of the second condenser 7 is connected to an outlet of the heat exchanger 41 to condense the gas coming out from the outlet of the heat exchanger 41.
The invention also provides an alcohol rough distillation method, which comprises the following steps:
providing the above-described alcohol rough distillation apparatus 100;
heating the crude distillation tower 2 by steam;
introducing the tower top alcohol vapor of the crude distillation tower 2 into a heat exchanger 41 of the prefractionator 4 to heat the prefractionator 4;
the fermented mash is introduced from the top inlet of the preheater 3;
introducing the tower top wine steam of the pre-fractionating tower 4 into the preheater 3 to preheat fermented mash;
passing the preheated beer from the bottom outlet of the preheater 3 to the side inlet of the prefractionator 4 to coarsely distill the preheated beer;
part of fermented mash in the pre-fractionating tower 4 is introduced into a side inlet of the coarse distillation tower 2 from a tower bottom outlet of the pre-fractionating tower 4 so as to perform coarse distillation on the fermented mash through the coarse distillation tower 2;
condensing the gas discharged from the side outlet of the preheater 3 using the first condenser 5; in the process, most of the alcohol component is condensed in the first condenser 5 and then sent to an aldehyde column (not shown) for further processing, and impurities contained in the fermented mash are discharged with the uncondensed alcohol component through a vacuum pump 6.
The gas discharged from the outlet of the heat exchanger 41 is condensed by the second condenser 7. In the process, most of the alcohol component is condensed in the first condenser 5, and then sent to an aldehyde column (not shown) for further processing.
In the present embodiment, the operation states of the rough distillation column 2 and the prefractionator 4 are both negative pressures.
According to the alcohol rough distillation equipment 100 and the rough distillation method thereof, the pre-distillation tower 4 is additionally arranged before fermented mash enters the rough distillation tower 2, during rough distillation, the fermented mash is dispersed in the pre-distillation tower 4 and the rough distillation tower 2 to be subjected to rough distillation, so that the fermented mash entering the rough distillation tower 2 to be subjected to rough distillation is reduced, therefore, the steam consumption of the rough distillation tower 2 is correspondingly reduced, the pre-distillation tower 4 is heated by adopting the tower top wine gas of the rough distillation tower 2, and no additional steam is required to be provided through a boiler, so that the energy utilization rate is improved, and the production cost is reduced.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (9)
1. An energy-saving alcohol rough distillation device comprises a rough distillation tower and is characterized in that: the tower top outlet of the crude distillation tower is connected with the inlet of the heat exchanger of the pre-fractionation tower so as to take the tower top wine vapor of the crude distillation tower as a preheating heat source of the pre-fractionation tower; the top outlet of the prefractionator is connected with the side inlet of the preheater so as to take the top wine vapor of the prefractionator as the preheating heat source of the fermented mash; the bottom outlet of the preheater is connected with the side inlet of the pre-fractionating tower so as to feed the preheated fermented mash into the pre-fractionating tower for rough distillation, and the bottom outlet of the pre-fractionating tower is connected with the side inlet of the rough distillation tower so as to feed part of the fermented mash in the pre-fractionating tower into the rough distillation tower for rough distillation.
2. The apparatus for rough distillation of alcohol according to claim 1, wherein: the alcohol rough distillation equipment further comprises a first condenser, and an inlet of the first condenser is connected with a side outlet of the preheater.
3. The apparatus for rough distillation of alcohol according to claim 2, wherein: the alcohol rough distillation equipment further comprises a vacuum pump, and the vacuum pump is connected with an outlet of the first condenser.
4. The apparatus for rough distillation of alcohol according to claim 1, wherein: the alcohol rough distillation equipment further comprises a second condenser, and an inlet of the second condenser is connected with an outlet of the heat exchanger.
5. An alcohol rough distillation method comprises the following steps:
providing alcohol rough distillation equipment which comprises a rough distillation tower, a preheater and a prefractionating tower, wherein the outlet of the top of the rough distillation tower is connected with the inlet of a heat exchanger of the prefractionating tower; the top outlet of the prefractionator is connected with the side inlet of the preheater; the bottom outlet of the preheater is connected with the side inlet of the prefractionator; the bottom outlet of the prefractionator is connected with the side inlet of the rough distillation tower;
heating the crude distillation tower by using steam;
introducing the tower top alcohol vapor of the crude distillation tower into a heat exchanger of the prefractionator to heat the prefractionator;
introducing fermented mash from a top inlet of the preheater;
introducing the tower top wine vapor of the prefractionator into the preheater to preheat the fermented mash;
passing the preheated beer from a bottom outlet of the preheater to a side inlet of the prefractionator to coarsely distill the preheated beer;
and part of fermented mash in the pre-fractionating tower is introduced into a side inlet of the coarse distillation tower from a tower bottom outlet of the pre-fractionating tower so as to perform coarse distillation on the fermented mash through the coarse distillation tower.
6. The method for roughly distilling alcohol according to claim 5, wherein: the alcohol rough distillation equipment further comprises a first condenser, wherein the inlet of the first condenser is connected with the side outlet of the preheater, and the alcohol rough distillation method further comprises the following step of condensing alcohol gas discharged from the side outlet of the preheater by adopting the first condenser.
7. The method for roughly distilling alcohol according to claim 6, wherein: the alcohol rough distillation equipment further comprises a vacuum pump, and the vacuum pump is connected with an outlet of the first condenser to discharge uncondensed gas.
8. The method for roughly distilling alcohol according to claim 5, wherein: the alcohol rough distillation equipment further comprises a second condenser, wherein the inlet of the second condenser is connected with the outlet of the heat exchanger, and the alcohol rough distillation method further comprises the following step of condensing the gas discharged from the outlet of the heat exchanger by adopting the second condenser.
9. The method for roughly distilling alcohol according to claim 5, wherein: the working states of the rough distillation tower and the prefractionator are negative pressure.
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| CN201610858783.6A CN106495989B (en) | 2016-09-27 | 2016-09-27 | Energy-saving alcohol rough distillation equipment and rough distillation method thereof |
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| CN201610858783.6A CN106495989B (en) | 2016-09-27 | 2016-09-27 | Energy-saving alcohol rough distillation equipment and rough distillation method thereof |
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| CN106495989A CN106495989A (en) | 2017-03-15 |
| CN106495989B true CN106495989B (en) | 2020-02-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8002953B2 (en) * | 2007-07-13 | 2011-08-23 | Amt International Inc. | Low-energy extractive distillation process for dehydration of aqueous ethanol |
| CN101580457B (en) * | 2008-05-13 | 2012-11-28 | 广东中科天元新能源科技有限公司 | Device and process for preparing absolute ethyl alcohol by taking fermented liquor as the raw material |
| CN101367710A (en) * | 2008-09-18 | 2009-02-18 | 中国石油大学(华东) | Process and apparatus for preparing absolute ethyl alcohol |
| WO2016067677A1 (en) * | 2014-10-30 | 2016-05-06 | 三菱化学株式会社 | Method for producing high-concentration alcohol |
| CN204310984U (en) * | 2014-12-17 | 2015-05-06 | 广东中科天元新能源科技有限公司 | Seven tower multiple-effect differential distillation technology coproduction top grade alcohol and fuel alcohol plants |
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