CN202989018U - High-yield device for preparing absolute ethyl alcohol - Google Patents
High-yield device for preparing absolute ethyl alcohol Download PDFInfo
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- CN202989018U CN202989018U CN 201320002328 CN201320002328U CN202989018U CN 202989018 U CN202989018 U CN 202989018U CN 201320002328 CN201320002328 CN 201320002328 CN 201320002328 U CN201320002328 U CN 201320002328U CN 202989018 U CN202989018 U CN 202989018U
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- ethanol dehydration
- dehydration tower
- interchanger
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- dehydrated alcohol
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Abstract
The utility model discloses a high-yield device for preparing absolute ethyl alcohol. The device comprises a reverse buffer device, a cooling heat exchange device, a vacuum extraction device, a rectifying tower and at least two ethyl alcohol dehydration towers, wherein the cooling heat exchange device is connected with the bottoms of the ethyl alcohol dehydration towers; the vacuum extraction device is connected with the tops of the ethyl alcohol dehydration towers; the reverse buffer device is connected with the tops of the ethyl alcohol dehydration towers and an inlet of the rectifying tower; and an outlet of the rectifying tower is connected with the tops of the ethyl alcohol dehydration towers. The device disclosed by the utility model has the advantages that residual ethyl alcohol solution steam can be sufficiently utilized, the yield of absolute ethyl alcohol is increased, and the production cost is lowered.
Description
Technical field
The utility model relates to chemical machinery field, is specifically related to the device that a kind of high yield prepares dehydrated alcohol.
Background technology
Dehydrated alcohol is important organic solvent, is widely used in all respects such as medicine, coating, sanitary product, makeup, grease.Simultaneously, dehydrated alcohol or important basic chemical raw materials, for the manufacture of chemical substances such as acetaldehyde, second diene, ethamine, ethyl acetate, acetic acid, monochloroethane, and deriving many intermediates of the products such as medicine, dyestuff, coating, spices, synthetic rubber, washing composition, agricultural chemicals, its goods are nearly more than 300 kinds.
Because dehydrated alcohol is widely used, demand is large, how to realize obtaining with higher yield the hot issue that dehydrated alcohol becomes this area research.
Traditional dehydrated alcohol manufacture method has azeotropic distillation, extraction fractional distillation and membrane separation process etc., but these methods all can inevitably be brought partial impurities into, and investment is large, energy consumption is high.
Development along with Polymer Technology, molecular sieve has very strong avidity with it to high polar molecule gradually, especially to water, in the situation that the very harsh characteristic that also can keep high adsorption rate such as low dividing potential drop, lower concentration or high temperature more and more is widely used in the manufacturing of raw spirit.
Molecular sieve can lose adsorptive power after water content reaches capacity, at this moment, ethanolic soln steam remaining in the ethanol dehydration tower can't be dewatered.Traditional molecular sieve adsorption equipment, its ethanol dehydration tower directly is connected with vacuum extractor, and in the ethanol dehydration tower, remaining ethanolic soln steam will directly be drawn in vacuum extractor and discharge, and cause ethanolic soln to be fully used, reduced the yield of dehydrated alcohol, production cost is high.
The utility model content
The purpose of this utility model namely is to overcome existing molecular sieve adsorption equipment for the dehydrated alcohol manufacturing can't utilize the residual ethanol solution vapor, causes the dehydrated alcohol yield low, and the deficiency that production cost is high provides a kind of high yield to prepare the device of dehydrated alcohol.
The purpose of this utility model is achieved through the following technical solutions:
A kind of high yield prepares the device of dehydrated alcohol, comprise inverse put snubber assembly, cooling heat exchange device, vacuum withdraw device, rectifying tower and at least two ethanol dehydration towers, cooling heat exchange device is connected with the bottom of ethanol dehydration tower, vacuum withdraw device is connected with the top of ethanol dehydration tower, are connected entrance and are connected in inverse put snubber assembly and the top of ethanol dehydration tower with rectifying tower, the outlet of rectifying tower is connected with the top of ethanol dehydration tower.
Preferably, described inverse put snubber assembly comprises inverse put surge tank and topping-up pump, and the import of inverse put surge tank is connected with the top of described ethanol dehydration tower, and the bottom of inverse put surge tank is connected with topping-up pump, and topping-up pump is connected with the entrance of rectifying tower.
Preferably, described cooling heat exchange device comprises interchanger B, and interchanger B is connected with the bottom of ethanol dehydration tower, corresponding all the ethanol dehydration towers of interchanger B.
Preferably, described vacuum withdraw device comprises interchanger C, vacuum buffer tank and vacuum system, and interchanger C is connected with the top of described ethanol dehydration tower, and vacuum buffer tank is connected with interchanger C, and vacuum system is connected with vacuum buffer tank.Corresponding all the ethanol dehydration towers of interchanger C.
Preferably, also comprise the light wine hold-up vessel, the light wine hold-up vessel is connected with vacuum buffer tank.
Preferably, also comprise heat transfer tube, heat transfer tube is arranged at the inside of inverse put surge tank.
Preferably, described inverse put snubber assembly is connected with the entrance of described rectifying tower by interchanger B.
Preferably, also comprise interchanger A, interchanger A is arranged between the top of the outlet of described rectifying tower and described ethanol dehydration tower.Corresponding all the ethanol dehydration towers of interchanger A.
Vacuum system is used for internal tank is vacuumized by vacuum pump, PLC sequence control system, gas-holder, vacuum pipe, vacuum valve, filter the system that assembly etc. forms overseas.
Advantage of the present utility model and beneficial effect are:
1. be provided with the inverse put surge tank, and the inverse put surge tank is connected with the ethanol dehydration tower, after adsorption process stops, the ethanolic soln steam that remains in the ethanol dehydration tower can be reclaimed by the inverse put surge tank, then be re-used as the preparation that raw material carries out dehydrated alcohol after sending into rectifying tower rectifying, realize to the full extent taking full advantage of of ethanol in the raw material, improved the yield of dehydrated alcohol, reduced production cost;
2. the inverse put snubber assembly is connected with the entrance of rectifying tower by interchanger B, liquid ethanol solution in the inverse put tower can be carried out heat exchange to dehydrated alcohol steam, not only the dehydrated alcohol steam cooling can be become liquid finished product, also can improve the temperature of liquid ethanol solution self, make it need not to heat up again when rectifying, realized taking full advantage of of heat energy.
Description of drawings
In order to be illustrated more clearly in embodiment of the present utility model, the below will make simple explanation to the required accompanying drawing of using in description the utility model embodiment.Apparent, the accompanying drawing in the following describes is only some embodiment that put down in writing in the utility model, to those skilled in the art, in the situation that do not pay creative work, can also according to following accompanying drawing, obtain other accompanying drawing.
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2;
Wherein, the component title that Reference numeral is corresponding is as follows:
1-ethanol dehydration tower A, 2-ethanol dehydration tower B, 3-vacuum buffer tank, 4-light wine storage tank, the 5-vacuum system, 61-interchanger A, 62-interchanger B, 63-interchanger C, 71-valve A, 72-valve B, 73-valve C, 74-valve D, 75-valve E, 76-valve F, 77-valve G, 78-valve H, 8-inverse put surge tank, the 9-heat transfer tube, 10-rectifying tower, 11-topping-up pump.
Embodiment
In order to make those skilled in the art understand better the utility model, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clear, complete description.Apparent, embodiment described below is only the part in the utility model embodiment, rather than all.Based on the embodiment of the utility model record, those skilled in the art are not in the situation that pay other all embodiment that creative work obtains, all in the scope that the utility model is protected.
Embodiment 1:
as shown in Figure 1, a kind of high yield prepares the device of dehydrated alcohol, comprise the inverse put snubber assembly, cooling heat exchange device, vacuum withdraw device, rectifying tower 10, ethanol dehydration tower A1 and ethanol dehydration tower B2, cooling heat exchange device is connected the bottom and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1, vacuum withdraw device is connected the top and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1, the inverse put snubber assembly is connected the entrance that the top is connected with rectifying tower and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1, the outlet of rectifying tower 10 is connected the top and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1.
Also comprise interchanger A61, interchanger A61 is arranged between the top of the outlet of described rectifying tower 10 and described ethanol dehydration tower A1 and ethanol dehydration tower B2.Be provided with valve A71 between interchanger A61 and ethanol dehydration tower A1, be provided with valve C73 between interchanger A61 and ethanol dehydration tower B2.
Described inverse put snubber assembly comprises inverse put surge tank 8 and topping-up pump 11, the import of inverse put surge tank 8 is connected the top and is connected with ethanol dehydration tower B2 with described ethanol dehydration tower A1, the bottom of inverse put surge tank 8 is connected with topping-up pump 11, and topping-up pump 11 is connected with the entrance of rectifying tower 10.Be provided with valve G77 between the top of the top of inverse put surge tank 8 and described ethanol dehydration tower A1 and ethanol dehydration tower B2.Wherein also be provided with heat transfer tube 9 in inverse put surge tank 8.
Described cooling heat exchange device comprises interchanger B62, and interchanger B62 is connected the bottom and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1.Be respectively arranged with valve E75 and valve F76 between the bottom of interchanger B62 and ethanol dehydration tower A1 and ethanol dehydration tower B2.
Described vacuum withdraw device comprises interchanger C63, vacuum buffer tank 3 and vacuum system 5, interchanger C63 is connected the top and is connected with ethanol dehydration tower B2 with described ethanol dehydration tower A1, vacuum buffer tank 3 is connected with interchanger C63, and vacuum system 5 is connected with vacuum buffer tank 3.Light wine hold-up vessel 4 is connected with vacuum buffer tank 3.Be respectively arranged with valve B72 and valve D74 between the top of interchanger C63 and described ethanol dehydration tower A1 and ethanol dehydration tower B2.
Working process of the present utility model is as follows:
A. alcohol steam is added thermosetting ethanol water superheated vapour by interchanger A61.
B. open valve A71 and E75, ethanol water superheated vapour is sent in ethanol dehydration tower A1 carried out adsorption dewatering, ethanol water superheated vapour enters from the top of ethanol dehydration tower A1, after passing adsorption bed, moisture is absorbed by molecular sieve, obtains dehydrated alcohol steam, and dehydrated alcohol steam is emitted from valve E75, heat exchange stores to the normal temperature liquid state through interchanger B62, namely obtains the dehydrated alcohol product.Water concentration in ethanol dehydration tower A1 stops sending into ethanol water superheated vapour in ethanol dehydration tower A near before saturated.
C. the interior maintenance normal pressure of inverse put surge tank 8, valve-off A71 and E75, open valve B72 and G77, the inside of ethanol dehydration tower A1 and the internal communication of inverse put surge tank 8, due to the pressure of the pressure in inverse put surge tank 8 less than ethanol dehydration tower A1, the ethanol water superheated vapour of ethanol dehydration tower A1 flows in inverse put surge tank 8 automatically, until the internal pressure of ethanol dehydration tower A1 and inverse put surge tank 8 equates.Be provided with heat transfer tube 9 in inverse put surge tank 8, ethanolic soln steam is cooled to liquid state by heat transfer tube 9, and liquid ethanolic soln is sent in rectifying tower 10 under the effect of transferpump 11.
D. valve-off A71, E75 and G77, open valve B72 and H78, makes the reverse outflow of moisture in ethanol dehydration tower A1, discharges the moisture of molecular sieve adsorption.Above-mentioned moisture enters vacuum buffer tank 3 by interchanger C63 heat exchange to liquid state, enter subsequently light wine storage tank 4 and store.Temperature in ethanol dehydration tower A1 is maintained adsorption temp, adopt 5 couples of ethanol dehydration tower A1 of vacuum system to vacuumize, making the vacuum keep in ethanol dehydration tower A1 is-0.091Mpa to complete the regeneration of molecular sieve.When vacuumizing, the ethanolic soln steam of extraction is entered vacuum buffer tank 3 by interchanger C63 heat exchange to liquid state, enters subsequently light wine storage tank 4 and stores.
E. send into adsorption dewatering in ethanol dehydration tower A1 and ethanol dehydration tower B2 after the aqueous ethanolic solution after rectifying in rectifying tower 10 being added the thermosetting alcohol steam.
In the present embodiment, ethanol dehydration tower A1 and ethanol dehydration tower B2 adsorb respectively and regenerate, and when adsorbing, ethanol dehydration tower B2 is regenerating as ethanol dehydration tower A1; When adsorbing, ethanol dehydration tower A1 is regenerating, the continuity of assurance device as ethanol dehydration tower B2.
It is identical with ethanol dehydration tower A1 with the process of regeneration that ethanol dehydration tower B2 adsorbs, and ethanol dehydration tower B2 controls the break-make of ethanol dehydration tower B2 and miscellaneous equipment by valve C73, valve D74 and valve F76.
The present embodiment takes full advantage of the residual ethanol solution vapor in ethanol dehydration tower A1 and ethanol dehydration tower B2, has improved the yield of dehydrated alcohol.
Embodiment 2:
as shown in Figure 2, a kind of high yield prepares the device of dehydrated alcohol, comprise the inverse put snubber assembly, cooling heat exchange device, vacuum withdraw device, rectifying tower 10, ethanol dehydration tower A1 and ethanol dehydration tower B2, cooling heat exchange device is connected the bottom and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1, vacuum withdraw device is connected the top and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1, the inverse put snubber assembly is connected the entrance that the top is connected with rectifying tower and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1, the outlet of rectifying tower 10 is connected the top and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1.
Also comprise interchanger A61, interchanger A61 is arranged between the top of the outlet of described rectifying tower 10 and described ethanol dehydration tower A1 and ethanol dehydration tower B2.Be provided with valve A71 between interchanger A61 and ethanol dehydration tower A1, be provided with valve C73 between interchanger A61 and ethanol dehydration tower B2.
Described inverse put snubber assembly comprises inverse put surge tank 8 and topping-up pump 11, be connected the top and be connected in the top of inverse put surge tank 8 with ethanol dehydration tower B2 with described ethanol dehydration tower A1, the bottom of inverse put surge tank 8 is connected with topping-up pump 11, and topping-up pump 11 is connected with the entrance of rectifying tower 10 by interchanger B62.Be provided with valve G77 between the top of the top of inverse put surge tank 8 and described ethanol dehydration tower A1 and ethanol dehydration tower B2.Wherein also be provided with heat transfer tube 9 in inverse put surge tank 8.
Described cooling heat exchange device comprises interchanger B62, and interchanger B62 is connected the bottom and is connected with ethanol dehydration tower B2 with ethanol dehydration tower A1.Be respectively arranged with valve E75 and valve F76 between the bottom of interchanger B62 and ethanol dehydration tower A1 and ethanol dehydration tower B2.
Described vacuum withdraw device comprises interchanger C63, vacuum buffer tank 3 and vacuum system 5, interchanger C63 is connected the top and is connected with ethanol dehydration tower B2 with described ethanol dehydration tower A1, vacuum buffer tank 3 is connected with interchanger C63, and vacuum system 5 is connected with vacuum buffer tank 3.Light wine hold-up vessel 4 is connected with vacuum buffer tank 3.Be respectively arranged with valve B72 and valve D74 between the top of interchanger C63 and described ethanol dehydration tower A1 and ethanol dehydration tower B2.
Working process of the present utility model is as follows:
A. alcohol steam is added thermosetting ethanol water superheated vapour by interchanger A61.
B. open valve A71 and E75, ethanol water superheated vapour is sent in ethanol dehydration tower A1 carried out adsorption dewatering, ethanol water superheated vapour enters from the top of ethanol dehydration tower A1, after passing adsorption bed, moisture is absorbed by molecular sieve, obtains dehydrated alcohol steam, and dehydrated alcohol steam is emitted from valve E75, heat exchange stores to the normal temperature liquid state through interchanger B62, namely obtains the dehydrated alcohol product.Water concentration in ethanol dehydration tower A1 stops sending into ethanol water superheated vapour in ethanol dehydration tower A near before saturated.
C. the interior maintenance normal pressure of inverse put surge tank 8, valve-off A71 and E75, open valve B72 and G77, the inside of ethanol dehydration tower A1 and the internal communication of inverse put surge tank 8, due to the pressure of the pressure in inverse put surge tank 8 less than ethanol dehydration tower A1, the ethanol water superheated vapour of ethanol dehydration tower A1 flows in inverse put surge tank 8 automatically, until the internal pressure of ethanol dehydration tower A1 and inverse put surge tank 8 equates.Be provided with heat transfer tube 9 in inverse put surge tank 8, ethanolic soln steam is cooled to liquid state by heat transfer tube 9, and liquid ethanolic soln is sent in rectifying tower 10 under the effect of transferpump 11.
D. valve-off A71, E75 and G77, open valve B72 and H78, makes the reverse outflow of moisture in ethanol dehydration tower A1, discharges the moisture of molecular sieve adsorption.Above-mentioned moisture enters vacuum buffer tank 3 by interchanger C63 heat exchange to liquid state, enter subsequently light wine storage tank 4 and store.Temperature in ethanol dehydration tower A1 is maintained adsorption temp, adopt 5 couples of ethanol dehydration tower A1 of vacuum system to vacuumize, making the vacuum keep in ethanol dehydration tower A1 is-0.091Mpa to complete the regeneration of molecular sieve.When vacuumizing, the ethanolic soln steam of extraction is entered vacuum buffer tank 3 by interchanger C63 heat exchange to liquid state, enters subsequently light wine storage tank 4 and stores.
E. send into adsorption dewatering in ethanol dehydration tower A1 and ethanol dehydration tower B2 after the aqueous ethanolic solution after rectifying in rectifying tower 10 being added the thermosetting alcohol steam.
In the present embodiment, ethanol dehydration tower A1 and ethanol dehydration tower B2 adsorb respectively and regenerate, and when adsorbing, ethanol dehydration tower B2 is regenerating as ethanol dehydration tower A1; When adsorbing, ethanol dehydration tower A1 is regenerating, the continuity of assurance device as ethanol dehydration tower B2.
It is identical with ethanol dehydration tower A1 with the process of regeneration that ethanol dehydration tower B2 adsorbs, and ethanol dehydration tower B2 controls the break-make of ethanol dehydration tower B2 and miscellaneous equipment by valve C73, valve D74 and valve F76.
Wherein, enter rectifying tower 10 after the aqueous ethanolic solution process interchanger B62 in inverse put surge tank 8.In interchanger B62, dehydrated alcohol steam can be effectively and aqueous ethanolic solution carry out heat exchange, the dehydrated alcohol vapor temperature reduces and obtains the dehydrated alcohol finished product, the aqueous ethanolic solution temperature raises, make it need not to heat up again when rectifying, realized taking full advantage of of heat energy.
The present embodiment not only takes full advantage of the residual ethanol solution vapor in ethanol dehydration tower A1 and ethanol dehydration tower B2, has improved the yield of dehydrated alcohol, can also take full advantage of heat, has saved the energy, has reduced cost.
As mentioned above, just can realize preferably the utility model.
Claims (8)
1. a high yield prepares the device of dehydrated alcohol, it is characterized in that: comprise inverse put snubber assembly, cooling heat exchange device, vacuum withdraw device, rectifying tower and at least two ethanol dehydration towers, cooling heat exchange device is connected with the bottom of ethanol dehydration tower, vacuum withdraw device is connected with the top of ethanol dehydration tower, are connected entrance and are connected in inverse put snubber assembly and the top of ethanol dehydration tower with rectifying tower, the outlet of rectifying tower is connected with the top of ethanol dehydration tower.
2. a kind of high yield according to claim 1 prepares the device of dehydrated alcohol, it is characterized in that: described inverse put snubber assembly comprises inverse put surge tank and topping-up pump, the import of inverse put surge tank is connected with the top of described ethanol dehydration tower, the bottom of inverse put surge tank is connected with topping-up pump, and topping-up pump is connected with the entrance of rectifying tower.
3. a kind of high yield according to claim 1 prepares the device of dehydrated alcohol, and it is characterized in that: described cooling heat exchange device comprises interchanger B, and interchanger B is connected with the bottom of ethanol dehydration tower.
4. a kind of high yield according to claim 1 prepares the device of dehydrated alcohol, it is characterized in that: described vacuum withdraw device comprises interchanger C, vacuum buffer tank and vacuum system, interchanger C is connected with the top of described ethanol dehydration tower, vacuum buffer tank is connected with interchanger C, and vacuum system is connected with vacuum buffer tank.
5. a kind of high yield according to claim 4 prepares the device of dehydrated alcohol, it is characterized in that: also comprise the light wine hold-up vessel, the light wine hold-up vessel is connected with vacuum buffer tank.
6. a kind of high yield according to claim 2 prepares the device of dehydrated alcohol, it is characterized in that: comprise that also heat transfer tube, heat transfer tube are arranged at the inside of inverse put surge tank.
7. a kind of high yield according to claim 3 prepares the device of dehydrated alcohol, it is characterized in that: described inverse put snubber assembly is connected with the entrance of described rectifying tower by interchanger B.
8. the described a kind of high yield of any one prepares the device of dehydrated alcohol according to claim 1 ~ 7, it is characterized in that: also comprise interchanger A, interchanger A is arranged between the top of the outlet of described rectifying tower and described ethanol dehydration tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002328 CN202989018U (en) | 2013-01-05 | 2013-01-05 | High-yield device for preparing absolute ethyl alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002328 CN202989018U (en) | 2013-01-05 | 2013-01-05 | High-yield device for preparing absolute ethyl alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202989018U true CN202989018U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320002328 Expired - Fee Related CN202989018U (en) | 2013-01-05 | 2013-01-05 | High-yield device for preparing absolute ethyl alcohol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202989018U (en) |
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2013
- 2013-01-05 CN CN 201320002328 patent/CN202989018U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN TIANCAI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: YALIAN SCIENCE AND TECHNOLOGY CO., LTD., SICHUAN |
|
| CP01 | Change in the name or title of a patent holder |
Address after: West high tech Zone Chengdu city Sichuan province 610000 City Road No. 399 Patentee after: Sichuan Tiancai Technology Co., Ltd. Address before: West high tech Zone Chengdu city Sichuan province 610000 City Road No. 399 Patentee before: Yalian Science and Technology Co., Ltd., Sichuan |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20160105 |