CN101922866A - Heat exchanger used for immiscible liquids evaporation - Google Patents
Heat exchanger used for immiscible liquids evaporation Download PDFInfo
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- CN101922866A CN101922866A CN 200910053207 CN200910053207A CN101922866A CN 101922866 A CN101922866 A CN 101922866A CN 200910053207 CN200910053207 CN 200910053207 CN 200910053207 A CN200910053207 A CN 200910053207A CN 101922866 A CN101922866 A CN 101922866A
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- end socket
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Abstract
The invention relates to a heat exchanger used for immiscible liquids evaporation, which comprises three pieces of tube sheets, wherein three tube sheets divide the heat exchanger into an upper end socket, a shell side, a middle end socket and a lower end socket; different liquids enter the heat exchanger from the inlet of the middle end socket and the inlet of the lower end socket respectively; different liquids enter a heat exchanging tube through a charging hole of the middle end socket and the charging hole of the lower end socket; the density of the liquid entering the heat exchanging tube through the lower end socket is larger in the two liquid; and the density of the liquid entering the heat exchanging tube through the middle end socket is smaller in the immiscible liquids. The invention mainly solves the problem that volatility is easy to be generated in the prior art and the charging mode is limited; and the operation of distributing firstly and then mixing is carried out on the immiscible liquids by using three tube sheet heat exchangers so as to enable the evaporation operation of the immiscible liquids to be more stable and have more choices for charging.
Description
Technical field
The present invention relates to the heat exchanger of liquid evaporation, particularly a kind of heat exchanger that is used for the immiscible liquid evaporation.
Background technology
In multiple chemical processes such as petroleum refining, utilize the gas phase mixture of various ingredients, these gas phase mixtures obtain after needing generally speaking to evaporate gasification with corresponding liquid.If the liquid that relates to dissolves mutually, to evaporate after then can being mixed into a kind of liquid to these liquid earlier, but exist when not dissolving each other when the liquid that relates to, conventional way is that multiple liquid is flashed to mixing again after the gas phase respectively.
For example in using preparation of styrene from ethylbenzene, the charging of reactor is generally gas phase, is mainly ethylbenzene and water.The ethylbenzene of liquid phase and water do not dissolve each other can layering, so after needing earlier ethylbenzene and water flashed to gas phase respectively, enter reactor after the mixing again.
Identical, in thermal cracking processes, the hydrocarbon of gas phase and water vapour enter pyrolysis heater after mixing, also are separately evaporations separately before.
The verified multiple immiscible liquid of practical operation can effectively be evaporated in the pipe of heat exchanger, does not have a kind of liquid to be evaporated fully simultaneously, promptly all has the phenomenon of not dissolving each other the liquid phase from import to outlet in Tube Sheet of Heat Exchanger.When two kinds of immiscible liquid were evaporated, the bubble point of blended liquid phase was all lower than the bubble point of any liquid.So, can keep identical heat transfer temperature difference simultaneously by the lower heating agent of serviceability temperature by guaranteeing to manage the incomplete evaporation of the multiple immiscible liquid in the interior blended liquid phase.The heat transfer area that needs for same heating agent just can reduce.Mixing uniformity between each heat exchanger tube directly influences total evaporation and heat-exchange effect, and whole heat exchange effect relies on very big to the allocation proportion and the mixed effect of immiscible liquid in every pipe.
The conventional process that immiscible liquid is evaporated is earlier immiscible liquid to be mixed, and then " mixing " liquid is sent into heat exchanger tube, and its characteristics can be expressed as " mixing earlier, the back is distributed ".The mixed effect that enters the heat exchanger tube immiscible liquid depends on outside the liquid rerum natura, also is subjected to mixed process, mixes influence of various factors such as back time of staying, and be easy to multiple unfavorable factors such as fluctuation and fluctuating range are bigger in the actual mechanical process.So mixed effect and equipment enlarging aspect have all shown bigger limitation.
Summary of the invention
The object of the present invention is to provide a kind of heat exchanger that is used for the immiscible liquid evaporation, what it solved is the problem that fluctuates easily in equipment enlarging difficulty and operation in the conventional art.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of heat exchanger that is used for the immiscible liquid evaporation, it is characterized in that: it comprises three tube sheets, three tube sheets are divided into upper cover, shell-side, middle end socket and low head to heat exchanger; Different liquids enters heat exchanger from middle end socket import and low head import respectively; Different liquids enters heat exchanger tube from middle end socket charging hole and low head charging hole respectively; The liquid that enters heat exchanger tube by low head is that density is bigger in two liquid; The liquid that enters heat exchanger tube by middle end socket is that density is less in the immiscible liquid.
With respect to the mode of operation of routine, the present invention has the characteristics of " distribute earlier, then mix ", in every heat exchanger tube, distribute balanced more, mixed effect also better, more even.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among Fig. 1,1 heating agent import, the outlet of 2 heating agents, 3 middle end socket imports, 4 low head imports, 5 pipe side outlets, 6 heat exchangers, 7 heat exchanger tubes, 8 upper perforated plates, 9 sagging plates, 10 lower perforated plates, 11 shell-sides, 12 upper covers, 13 middle end sockets, 14 low heads, 15 middle end socket charging holes, 16 low head charging holes.
The specific embodiment
See also Fig. 1, the invention provides a kind of three tubular sheet heat exchangers that are used for the immiscible liquid evaporation.As shown in the figure: it comprises three tube sheets 8,9,10, and heat exchanger 6 is divided into upper cover 12, shell-side 11, middle end socket 13 and low head 14; Different liquids enters heat exchanger 6 from middle end socket 13 imports 3 and low head 14 imports 4 respectively; Different liquids enters heat exchanger tube 7 from middle end socket charging hole 15 and low head charging hole 16 respectively; The liquid that enters heat exchanger tube 7 by low head 14 is that density is bigger in two liquid; The liquid that enters heat exchanger tube 7 by middle end socket 13 is that density is less in the immiscible liquid.
The present invention is outside the upper perforated plate 8 and lower perforated plate 10 of conventional vertical heat exchanger, increase sagging plate 9, heat exchanger 6 is divided into upper cover 12, shell-side 11, middle end socket 13 and low head 14, immiscible two liquid enter heat exchanger from middle end socket import 3 and low head import 4 respectively, distribute by middle end socket charging hole 15 and 16 pairs two liquid of low head charging hole then to enter heat exchanger tube 7 and mixing.
With respect to the mode of operation of routine, the present invention has the characteristics of " distribute earlier, then mix ", in every heat exchanger tube, distribute balanced more, mixed effect also better, more even.
Immiscible liquid is to exist with a certain proportion of mixing material in heat exchanger tube 7, and in the heating agent heating lower part evaporation of shell-side, mixture goes out heat exchanger from pipe side outlet 5.Because immiscible liquid phase exists the bubble point that makes blended liquid phase to reduce, and can effectively utilize the heating agent thermal source or reduce heat transfer area.
Owing to set up a tube sheet to isolate different liquid more, controlled every kind of ratio that liquid enters every heat exchanger tube uniformly and effectively, thereby avoided fully because the influence of fluctuation such as liquid level, proportion control to operating.
Tube sheet by increasing has simultaneously been avoided when the heat exchanger tube charging selectional restriction to liquid phase.Can advance the light liquid phase at charging hole up and down, last charging hole advances the heavy-fluid phase.When practical operation because the difference of weight liquid volume ratio, by selecting better to distribute mixed effect to the difference of two kinds of liquid chargings.
During operation, end socket 13 and low head 14, two liquid separated by lower perforated plate 10 in the middle of immiscible two liquid entered from middle end socket import 3 and low head import 4 respectively, so there is not contact in end socket.Enter in heat exchanger tube 7 pipes by middle end socket charging hole 15 and low head charging hole 16 respectively then, in the heating agent effect lower part evaporation that enters by heating agent import 1, the mixed liquor of part evaporation is from 5 dischargings of pipe side outlet then.
Claims (1)
1. one kind is used for the heat exchanger that immiscible liquid evaporates, and it is characterized in that: it comprises three tube sheets, and three tube sheets are divided into upper cover, shell-side, middle end socket and low head to heat exchanger; Different liquids enters heat exchanger from middle end socket import and low head import respectively; Different liquids enters heat exchanger tube from middle end socket charging hole and low head charging hole respectively; The liquid that enters heat exchanger tube by low head is that density is bigger in two liquid; The liquid that enters heat exchanger tube by middle end socket is that density is less in the immiscible liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910053207 CN101922866A (en) | 2009-06-17 | 2009-06-17 | Heat exchanger used for immiscible liquids evaporation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910053207 CN101922866A (en) | 2009-06-17 | 2009-06-17 | Heat exchanger used for immiscible liquids evaporation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101922866A true CN101922866A (en) | 2010-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910053207 Pending CN101922866A (en) | 2009-06-17 | 2009-06-17 | Heat exchanger used for immiscible liquids evaporation |
Country Status (1)
| Country | Link |
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| CN (1) | CN101922866A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288051A (en) * | 2011-06-16 | 2011-12-21 | 徐志刚 | Vertical double-tube plate shell-and-tube heat exchanger for evaporating liquid with minimum constant boiling component |
| CN102626555A (en) * | 2012-03-26 | 2012-08-08 | 中国五环工程有限公司 | Acetic acid evaporation and gas mixing integrated device |
-
2009
- 2009-06-17 CN CN 200910053207 patent/CN101922866A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288051A (en) * | 2011-06-16 | 2011-12-21 | 徐志刚 | Vertical double-tube plate shell-and-tube heat exchanger for evaporating liquid with minimum constant boiling component |
| CN102288051B (en) * | 2011-06-16 | 2012-12-19 | 徐志刚 | Vertical double-tube plate shell-and-tube heat exchanger for evaporating liquid with minimum constant boiling component |
| CN102626555A (en) * | 2012-03-26 | 2012-08-08 | 中国五环工程有限公司 | Acetic acid evaporation and gas mixing integrated device |
| CN102626555B (en) * | 2012-03-26 | 2015-05-20 | 中国五环工程有限公司 | Acetic acid evaporation and gas mixing integrated device |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: China Petrochemical Group Corp. Applicant after: SINOPEC Shanghai Engineering Company Limited Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: China Petrochemical Group Corp. Applicant before: Sinopec Shanghai Engineering Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101222 |