CN212214643U - A liquid heat transfer economizer system that boils for ethanol is retrieved - Google Patents
A liquid heat transfer economizer system that boils for ethanol is retrieved Download PDFInfo
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- CN212214643U CN212214643U CN202021296129.9U CN202021296129U CN212214643U CN 212214643 U CN212214643 U CN 212214643U CN 202021296129 U CN202021296129 U CN 202021296129U CN 212214643 U CN212214643 U CN 212214643U
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Abstract
The utility model provides a liquid heat transfer economizer system that boils for ethanol recovery, include first heat exchanger, second heat exchanger and the third heat exchanger that communicates in proper order through the ethanol pipeline, the ethanol outlet of third heat exchanger and the inlet intercommunication of distillation column, the gas outlet of distillation column with the air inlet intercommunication of third heat exchanger, the liquid outlet of distillation column with the heat transfer pipeline import intercommunication of second heat exchanger. This application passes through the pipeline design, can utilize the heat energy that produces during ethanol distillation and heat transfer effectively, and this application is heating ethanol step by step in ethanol recovery technology through the waste heat, has reduced the use of steam heat medium, makes ethanol recovery technology cost lower, and is more energy-conserving.
Description
Technical Field
The utility model relates to an ethanol recovery system heat transfer field, concretely relates to a liquid heat transfer economizer system that boils for ethanol recovery.
Background
In an ethanol recovery system, before recovered ethanol enters a distillation tower, the cold ethanol waste liquid needs to be heated in the whole process, in the prior art, a steam medium is used as a heating medium for heating during heating, and the steam heating medium is used for heating, so that the cost is high, the energy waste is caused, and the problems are needed to be solved in the field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a solution for the liquid heat transfer economizer system that boils that ethanol was retrieved of above-mentioned problem.
In order to solve the technical problem, the utility model provides a scheme is: the utility model provides a boil liquid heat transfer economizer system for ethanol recovery, includes first heat exchanger, second heat exchanger and the third heat exchanger that communicates in proper order through the ethanol pipeline, the ethanol outlet of third heat exchanger and the inlet of distillation column intercommunication, the gas outlet of distillation column with the air inlet intercommunication of third heat exchanger, the liquid outlet of distillation column with the heat transfer pipeline import of second heat exchanger communicates.
Further, the method comprises the following steps: the distillation tower at least comprises a first distillation tower and a second distillation tower, a liquid outlet of the second distillation tower is communicated with an inlet of the heat exchange pipeline of the second heat exchanger, a liquid outlet of the second distillation tower is communicated with a liquid inlet of the first distillation tower, and a gas outlet of the second distillation tower is communicated with a gas inlet of the third heat exchanger.
Further, the method comprises the following steps: still include first condenser, the air inlet of first condenser with the gas outlet intercommunication of third heat exchanger, be provided with on the first condenser with the backward flow mouth of the gas pipeline UNICOM of first condenser, be provided with on the third heat exchanger with the backward flow mouth of the gas pipeline intercommunication of third heat exchanger, the backward flow mouth on the third heat exchanger with gas inlet intercommunication on the third heat exchanger.
Further, the method comprises the following steps: the condenser is characterized by further comprising a gas collection tank, wherein a gas inlet of the gas collection tank is communicated with a gas outlet of the first condenser, and a liquid outlet is formed in the gas collection tank.
Further, the method comprises the following steps: the first condenser comprises a plurality of first condensers which are connected in series.
Further, the method comprises the following steps: and a cooling water outlet of the first condenser is communicated with a heat exchange pipeline inlet of the first heat exchanger.
Further, the method comprises the following steps: the gas collecting device is characterized by further comprising a second condenser, wherein a backflow port of the first condenser, a backflow port of the third heat exchanger and a liquid outlet of the gas collecting tank are communicated with a sampling pipeline, and an ethanol inlet of the second condenser is communicated with the sampling pipeline.
Further, the method comprises the following steps: the liquid outlet of the gas collecting tank, the reflux port of the first condenser and the reflux port on the third heat exchanger are communicated with the liquid inlet of the second distillation tower through a reflux pipeline, and the reflux pipeline is arranged on the sampling pipeline.
Further, the method comprises the following steps: and an ethanol outlet of the first heat exchanger is communicated with a heat exchange pipeline of the second condenser.
Further, the method comprises the following steps: the second condenser comprises a plurality of second condensers which are sequentially connected in series, and an ethanol outlet of the first heat exchanger is communicated with an inlet of a heat exchange pipeline of any second condenser.
The utility model has the advantages that: this application passes through the pipeline design, can utilize the heat energy that produces during ethanol distillation and heat transfer effectively, and this application is heating ethanol step by step in ethanol recovery technology through the waste heat, has reduced the use of steam heat medium, makes ethanol recovery technology cost lower, and is more energy-conserving.
Drawings
FIG. 1 is a piping diagram of the present application;
FIG. 2 is a schematic flow diagram of ethanol prior to distillation;
FIG. 3 is a schematic diagram of the ethanol pipeline after distillation;
the reference numbers are as follows: the system comprises a first heat exchanger 1, a second heat exchanger 2, a third heat exchanger 3, a first distillation tower 41, a second distillation tower 42, a first condenser 5, a gas collecting tank 6, a second condenser 7 and a sampling pipeline 8.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific embodiments so that those skilled in the art may better understand the present invention and practice it.
The following discloses many different embodiments or examples for implementing the subject technology described. While specific examples of one or more arrangements of features are described below to simplify the disclosure, the examples should not be construed as limiting the invention, and the first feature described later in the specification in communication with the second feature can include embodiments that are directly related, can also include embodiments that form additional features, and further can include the use of one or more additional intervening features to indirectly communicate or combine the first and second features with each other, so that the first and second features may not be directly related.
As shown in fig. 1 to 3, an embodiment of a boiling liquid heat exchange energy-saving system for ethanol recovery includes a first heat exchanger 1, a second heat exchanger 2, and a third heat exchanger 3 sequentially connected through an ethanol pipeline, an ethanol outlet of the third heat exchanger 3 is connected to a liquid inlet of a distillation tower, a gas outlet of the distillation tower is connected to a gas inlet of the third heat exchanger 3, and a liquid outlet of the distillation tower is connected to a heat exchange pipeline inlet of the second heat exchanger 2.
As shown in figure 2, the low-temperature ethanol waste liquid is introduced into a first heat exchanger 1 through an ethanol pipeline, ethanol is preheated in a first stage through a heat exchange medium, then the ethanol sequentially passes through a second heat exchanger 2 and a third heat exchanger 3, the ethanol enters a distillation tower after being heated up in a stage-by-stage manner, the ethanol is vaporized after being distilled, the high-temperature ethanol steam needs to be cooled, as shown in figure 3, the vaporized ethanol steam is introduced into the third heat exchanger 3, the ethanol steam exchanges heat with the ethanol waste liquid to be introduced into the distillation tower, the high-temperature ethanol steam is cooled, meanwhile, the ethanol waste liquid to be introduced into the distillation tower is preheated for three times, the temperature of the waste liquid after passing through the distillation tower is lower than that of the ethanol steam, the waste liquid can be utilized for preheating the ethanol waste liquid in a second heat exchanger 2 in a second stage, and products generated by the distillation tower are preheated after distillation, the ethanol waste liquid before distillation is preheated, and the ethanol steam is cooled, so that the existing steam heating medium is replaced, the energy can be greatly saved, and the cost is reduced.
In some embodiments, as shown in fig. 1, the distillation column comprises at least a first distillation column 41 and a second distillation column 42, wherein a liquid outlet of the first distillation column 41 is communicated with an inlet of the heat exchange pipeline of the second heat exchanger 2, a liquid outlet of the second distillation column 42 is communicated with an inlet of the first distillation column 41, and a gas outlet of the second distillation column 42 is communicated with a gas inlet of the third heat exchanger 3. When the ethanol waste liquid enters the first distillation tower 41 for primary distillation, the generated ethanol steam enters the second distillation tower 42 for secondary distillation, ethanol can be separated more thoroughly through two times of distillation, and the ethanol steam distilled by the second distillation tower 42 is introduced into the third heat exchanger 3 for heat exchange.
In addition, in an embodiment, as shown in fig. 1 and fig. 2, a first condenser 5 is further provided, the first condenser 5 may include a plurality of first condensers 5, the gas pipelines of the plurality of first condensers 5 are connected in series, wherein the gas outlet of the third heat exchanger 3 is connected to the total gas inlet of the first condenser 5, and the first condenser 5 and the third heat exchanger 3 are further provided with return ports communicated with the gas pipelines. After the ethanol steam after distillation is gradually condensed, the condensed ethanol flows out through the reflux port, and then the ethanol can be refluxed or collected. In some examples, the gas collection tank 6 is further included, a gas inlet of the gas collection tank 6 is communicated with a gas outlet of the first condenser 5, the gas collection tank 6 can collect the ethanol vapor which is not liquefied after being cooled step by step, the ethanol vapor is naturally cooled in the gas collection tank 6, and the cooled ethanol can be collected or refluxed through a liquid outlet at the bottom of the gas collection tank 6.
In addition, in order to make full use of the waste heat, the cooling water outlet of the first condenser 5 is communicated with the heat exchange pipeline inlet of the first heat exchanger 1, the cooling water carries partial heat after cooling the ethanol steam, and the ethanol waste liquid in the first heat exchanger 1 can be preheated in a primary mode through the waste heat of the cooling water.
In some embodiments, as shown in fig. 1 and 3, the system further includes a second condenser 7, the reflux port of the first condenser 5 and the liquid outlet of the gas collecting tank 6 are communicated with the sampling pipeline 8, the ethanol inlet of the second condenser 7 is communicated with the sampling pipeline 8, the ethanol is high-temperature ethanol liquid after being condensed by the gas collecting tank 6 and the first condenser 5, after the sampling pipeline is qualified in sampling test, the ethanol liquid passes through the second condenser 7 and is further cooled, and after the sampling pipeline is qualified, the ethanol can be recovered to the finished product tank.
In order to avoid unqualified ethanol liquid after detection, in the embodiment of the application, the liquid outlet of the gas collecting tank 6, the reflux port of the first condenser 5 and the reflux port of the third heat exchanger 3 are communicated with the liquid inlet of the second distillation tower 42 through reflux pipelines, the reflux pipelines are arranged on the sampling pipeline 8 as branch circuits, when the ethanol is found to be unqualified through testing, the ethanol can be refluxed to the second distillation tower 42 through the reflux pipelines, and then the ethanol is redistilled.
On the basis, an ethanol outlet of the first heat exchanger 1 can be communicated with a heat exchange pipeline of the second condenser 7, in some embodiments, the second condenser 7 comprises a plurality of second condensers 7, the ethanol pipelines of the second condensers 7 are connected in series, an ethanol outlet of the first heat exchanger 1 is communicated with an inlet of a heat exchange pipeline of any second condenser 7, the ethanol waste liquid after primary preheating is subjected to heat exchange with the condensed high-temperature ethanol through the second condenser 7, the heat of the ethanol waste liquid after primary preheating can be preserved, and on the other hand, the temperature of the high-temperature ethanol can be reduced.
This application passes through the pipeline design, can utilize the heat energy that produces during ethanol distillation, heat transfer effectively, and the cooling water cools off again after the heat transfer many times to can recycle, this application is heating ethanol step by step in the ethanol recovery technology, has reduced the use to the steam heat medium, thereby makes ethanol recovery technology cost lower, and is more energy-conserving.
It should be understood that the pipeline is provided with a valve for controlling the flow direction and the flow rate of the flow path, and a plurality of storage tanks can be arranged for collecting products managed by each pipeline, and the pipeline is not specifically limited to the valve and the storage tanks and does not influence the realization of the pipeline.
Finally, although 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 the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (10)
1. The utility model provides a boil liquid heat transfer economizer system for ethanol recovery which characterized in that, includes first heat exchanger, second heat exchanger and the third heat exchanger that communicates in proper order through the ethanol pipeline, the ethanol outlet of third heat exchanger and the inlet of distillation column intercommunication, the gas outlet of distillation column with the air inlet of third heat exchanger intercommunication, the liquid outlet of distillation column with the heat transfer pipeline import of second heat exchanger communicates.
2. A boiling liquid heat exchange energy saving system for ethanol recovery as claimed in claim 1, wherein the distillation column comprises at least a first distillation column and a second distillation column, the liquid outlet of the first distillation column is communicated with the heat exchange pipeline inlet of the second heat exchanger, the liquid outlet of the second distillation column is communicated with the liquid inlet of the first distillation column, and the gas outlet of the second distillation column is communicated with the gas inlet of the third heat exchanger.
3. A boiling liquid heat exchange energy-saving system for recovering ethanol as claimed in claim 2, further comprising a first condenser, wherein the gas inlet of the first condenser is communicated with the gas outlet of the third heat exchanger, the first condenser is provided with a return port communicated with the gas pipeline of the first condenser, the third heat exchanger is provided with a return port communicated with the gas pipeline of the third heat exchanger, and the return port of the third heat exchanger is communicated with the gas inlet of the third heat exchanger.
4. A boiling liquid heat exchange energy-saving system for ethanol recovery as claimed in claim 3, further comprising a gas collection tank, wherein the gas inlet of the gas collection tank is communicated with the gas outlet of the first condenser, and the gas collection tank is provided with a liquid outlet.
5. A boiling liquid heat exchange energy saving system for ethanol recovery as claimed in claim 3, wherein the first condenser comprises a plurality of first condensers, and the gas pipelines of the plurality of first condensers are connected in series.
6. A boiling liquid heat exchange energy saving system for ethanol recovery as claimed in claim 3, wherein the cooling water outlet of the first condenser is communicated with the heat exchange pipeline inlet of the first heat exchanger.
7. A boiling liquid heat exchange energy-saving system for recovering ethanol as claimed in claim 4, further comprising a second condenser, wherein the reflux port of the first condenser, the reflux port of the third heat exchanger and the liquid outlet of the gas collecting tank are communicated with a sampling pipeline, and the ethanol inlet of the second condenser is communicated with the sampling pipeline.
8. A boiling liquid heat exchange energy-saving system for ethanol recovery as claimed in claim 7, wherein the liquid outlet of the gas collecting tank, the reflux port of the first condenser and the reflux port of the third heat exchanger are communicated with the liquid inlet of the second distillation tower through a reflux pipeline, and the reflux pipeline is arranged on the sampling pipeline.
9. A boiling liquid heat exchange energy saving system for ethanol recovery as claimed in claim 7, wherein the ethanol outlet of the first heat exchanger is communicated with the heat exchange pipeline of the second condenser.
10. The boiling liquid heat exchange energy-saving system for ethanol recovery as claimed in claim 7, wherein the second condenser comprises a plurality of second condensers, the plurality of second condensers are connected in series in sequence, and the ethanol outlet of the first heat exchanger is communicated with the heat exchange pipeline inlet of any one of the second condensers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021296129.9U CN212214643U (en) | 2020-07-03 | 2020-07-03 | A liquid heat transfer economizer system that boils for ethanol is retrieved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021296129.9U CN212214643U (en) | 2020-07-03 | 2020-07-03 | A liquid heat transfer economizer system that boils for ethanol is retrieved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212214643U true CN212214643U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021296129.9U Active CN212214643U (en) | 2020-07-03 | 2020-07-03 | A liquid heat transfer economizer system that boils for ethanol is retrieved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212214643U (en) |
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2020
- 2020-07-03 CN CN202021296129.9U patent/CN212214643U/en active Active
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