CN204767516U - Rectification forced circulation heating device - Google Patents
Rectification forced circulation heating device Download PDFInfo
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- CN204767516U CN204767516U CN201520479226.4U CN201520479226U CN204767516U CN 204767516 U CN204767516 U CN 204767516U CN 201520479226 U CN201520479226 U CN 201520479226U CN 204767516 U CN204767516 U CN 204767516U
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- forced circulation
- reboiler
- rectifying
- phase end
- rectifying column
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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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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a rectification forced circulation heating device belongs to the chemical industry equipment field. It includes rectifying column, reboiler, forced circulation pump and circulation diverter valve, the lower part of rectifying column hold for the vapour phase for liquid phase end, the upper portion of rectifying column, reboiler bottom link to each other through the connecting pipe with the liquid phase end, the reboiler top links to each other through the connecting pipe with the vapour phase end, the circulation diverter valve concatenate on the connecting pipe of reboiler and liquid phase end, the both ends of forced circulation pump link to each other with the both ends of circulation diverter valve respectively through two connecting pipes. The utility model discloses the quick heating material of ability, material heating efficiency is high, and the material purity of isolating is high, simultaneously, can select the forced circulation pump whether to use as required, shorten the rectification time, also effectively reduce the rectification energy resource consumption, and the dry -type heater has advantages of simple structure, reasonable design and easy manufacturing.
Description
Technical field
The utility model belongs to field of chemical equipment, more particularly, relates to a kind of rectifying forced circulation heater.
Background technology
Rectifying column is the tower vapor-liquid contacting apparatus of one carrying out rectifying, is also called destilling tower, has plate column and packed tower two kinds of main Types, can be divided into continuous rectifying tower and batch fractionating tower again according to mode of operation.Rectifying column, when carrying out material rectifying, utilizes the bringing-up section of bottom to heating material, utilizes the different sequential evaporation of each component boiling point in material and obtains highly purified product.Rectifying column carries out self-loopa heating by siphonage principle, when two kinds of material boiling points difference is larger, is easy to realize, but two kinds of materials boiling point very close to time be just difficult to realize circulating-heating, now, the heating effect of material is poor, and the efficiency of heating surface is low.
Prior art material rectifying produce in, often reboiler and rectifying column are combinationally used, reboiler is serially connected between the liquid phase end of rectifying column and gas phase end, utilize liquid level equilibrium principle maintenance reboiler in material liquid level and fractionating column liquid level at sustained height.Reboiler is as heat-exchange device, at the bottom of rectifying tower, provide liquid phase to enter into reboiler, intensification vaporization is carried out to material, the material be vaporized is sent back in rectifying column, the vapor-phase material returned in tower upwards passes through tower tray, and liquid phase material falls to get back at the bottom of tower, due to the effect of differential static pressure, at the bottom of tower, will constantly supplement the part liquid level be evaporated.But the material exchange rate between rectifying column and reboiler is low, in reboiler, heating material is slow, and cause material rectification efficiency low, isolated feed purity is low.
As China Patent Publication No.: CN202620756U, publication date: on December 26th, 2012, disclosed a kind of forced cyclic type rectifying column, it comprises tower body, and the bottom of described tower body is bringing-up section, and described bringing-up section is provided with heating interlayer; It also comprises a forced circulation pipe, and one end of described forced circulation pipe is communicated with bottom tower body bringing-up section, and the other end is communicated with tower body bringing-up section top, and described forced circulation pipe is also provided with circulating pump and heater.While utilizing the heating interlayer of bringing-up section to heat material, circulating pump is by material suction forced circulation pipe, and additionally carry out forced circulation heating by heater, the temperature of Quick high material, the efficiency of heating surface is high, reduces the content of product impurity.
And for example China Patent Publication No. CN202715259U, publication date on February 6th, 2013, disclosed a kind of rectifier unit, comprise rectifying column and reboiler, liquid phase end and the gas phase end of described rectifying column are connected to reboiler two ends respectively by tube connector, and described liquid phase end is connected in series forced circulation pump with on the tube connector between reboiler, and material that viscosity high large for content, pump is utilized to strengthen the heat exchange frequency of material, thus the mass transfer effect obtained.
Above-mentioned two application cases are all directly between rectifying column and reboiler, installed forced circulation pump, improve the heat exchange effect of material, improve material rectifying purity, but when two kinds of material boiling point differences of required separation are larger, whether forced circulation pump uses rectification effect substantially without impact, now use forced circulation pump, cause unnecessary energy waste.
Summary of the invention
The problem that 1, will solve
For in existing rectifying device distillation process, heating material speed is slow, efficiency is low, the problem of the energy waste that the low and forced circulation pump of the purity of separation of material causes, the utility model provides a kind of rectifying forced circulation heater, can heated material fast, heating material efficiency is high, and the feed purity of separation is high; Meanwhile, can forced circulation pump be selected as required whether to use, shorten the rectifying time, also effectively reduce rectifying energy resource consumption.
2, technical scheme
For solving the problem, the utility model adopts following technical scheme.
A kind of rectifying forced circulation heater, comprise rectifying column, reboiler, forced circulation pump and circulating switching valve, the bottom of described rectifying column is liquid phase end, the top of rectifying column is vapour phase end, be connected by tube connector with liquid phase end bottom described reboiler, reboiler top is connected by tube connector with vapour phase end, and described circulating switching valve is serially connected on the tube connector of reboiler and liquid phase end, and the two ends of described forced circulation pump are connected with the two ends of circulating switching valve respectively by two tube connectors.
Preferentially, packed tower is provided with in described rectifying column.
Preferentially, the number of plies of described packed tower is three layers.
Preferentially, described reboiler adopts Steam Heating.
Preferentially, the top of described reboiler is provided with steam inlet, and the bottom of reboiler is provided with steam (vapor) outlet.
Preferentially, two tube connectors that described forced circulation pump is connected with circulating switching valve are respectively equipped with a stop valve.
3, beneficial effect
Compared to prior art, the beneficial effects of the utility model are:
(1) connecting line between the liquid phase end of the utility model rectifying column and reboiler is serially connected with circulating switching valve, and be parallel with forced circulation pump with circulating switching valve, when the material boiling point difference that will be separated is larger, forced circulation pump need not be started, namely carry out self-loopa heating by the siphon of rectifying column and carry out feed separation, when the material boiling point be separated relatively time, open forced circulation pump, improve heating material efficiency; This kind of version, improves feed separation efficiency, and the feed purity of separation is high, shortens the time of rectifying, and can effectively reduce rectifying energy resource consumption;
(2) the utility model is provided with three layers of packed tower in rectifying column, with the purity improving separation of material further;
(3) heat medium of the utility model reboiler is steam, and after overhead steam adiabatic compression can being heated up, again as the thermal source of reboiler, waste heat recovery recycles, and improves heat utilization rate, reduces energy resource consumption, reduces production cost;
(4) top of the utility model reboiler is provided with steam inlet, and the bottom of reboiler is provided with steam (vapor) outlet, ensures that in reboiler, material fully heats, and improves the utilization rate of steam;
(5) two sections of tube connectors between the utility model forced circulation pump and circulating switching valve are equipped with stop valve, can open at any time or cut off forced circulation pump, convenient and swift, be also conducive to protecting forced circulation pump;
(6) the utility model structure is simple, reasonable in design, is easy to manufacture.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, rectifying column; 2, reboiler; 3, forced circulation pump; 4, liquid phase end; 5, vapour phase end; 6, circulating switching valve; 7, stop valve; 8, steam inlet; 9, steam (vapor) outlet.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the utility model is described further.
Embodiment 1
As shown in Figure 1, a kind of rectifying forced circulation heater of the present embodiment, comprise rectifying column 1, reboiler 2, circulating pump 3 and circulating switching valve 6, the bottom of rectifying column 1 is liquid phase end 4, the top of rectifying column 1 is vapour phase end 5, be connected by tube connector with liquid phase end 4 bottom reboiler 2, reboiler 2 top is connected by tube connector with vapour phase end 5, circulating switching valve 6 is serially connected in reboiler 2 with on the tube connector of liquid phase end 4, the two ends of forced circulation pump 3 are connected with the two ends of circulating switching valve 6 respectively by two tube connectors, two tube connectors that forced circulation pump 3 is connected with circulating switching valve 6 are in the present embodiment respectively equipped with a stop valve 7, facilitate the break-make of forced circulation pump 3 branch road, also be conducive to protecting forced circulation pump 3, extend its service life.It is worth mentioning that, for improving the purity of separation of material further, in rectifying column 1, being also provided with three layers of packed tower.In addition, reboiler 2 uses Steam Heating, and steam inlet 8 is arranged at the top of reboiler 2, and steam (vapor) outlet 9 is arranged at the bottom of reboiler 2, can ensure that reboiler fully heats material like this, improves the heat utilization efficiency of steam.
A kind of rectifying forced circulation heater of the present embodiment, when carrying out feed separation, as moisture ethanol and isooctanol mixture, first open circulating switching valve 6, and close stop valve 7, forced circulation pump 3 does not work, meanwhile, reboiler 2 passes into steam, normal heating, utilize siphon self-loopa to heat, ethanol and hydrous ethanol can be isolated; Then, close circulating switching valve 6, and open stop valve 7, forced circulation pump 3 works, and can continue to isolate isooctanol.
Example described in the utility model is only be described preferred embodiment of the present utility model; not the utility model design and scope are limited; under the prerequisite not departing from the utility model design philosophy; the various distortion that this area engineers and technicians make the technical solution of the utility model and improvement, all should fall into protection domain of the present utility model.
Claims (6)
1. a rectifying forced circulation heater, comprise rectifying column (1) and reboiler (2), it is characterized in that: also comprise forced circulation pump (3) and circulating switching valve (6), the bottom of described rectifying column (1) is liquid phase end (4), the top of rectifying column (1) is vapour phase end (5), described reboiler (2) bottom is connected by tube connector with liquid phase end (4), and reboiler (2) top is connected by tube connector with vapour phase end (5); Described circulating switching valve (6) is serially connected in reboiler (2) with on the tube connector of liquid phase end (4), and the two ends of described forced circulation pump (3) are connected with the two ends of circulating switching valve (6) respectively by two tube connectors.
2. a kind of rectifying forced circulation heater according to claim 1, is characterized in that: be provided with packed tower in described rectifying column (1).
3. a kind of rectifying forced circulation heater according to claim 2, is characterized in that: the number of plies of described packed tower is three layers.
4. a kind of rectifying forced circulation heater according to claim 1, is characterized in that: described reboiler (2) adopts Steam Heating.
5. a kind of rectifying forced circulation heater according to claim 4, it is characterized in that: the top of described reboiler (2) is provided with steam inlet (8), the bottom of reboiler (2) is provided with steam (vapor) outlet (9).
6. a kind of rectifying forced circulation heater according to claim 1-5 any one, is characterized in that: two tube connectors that described forced circulation pump (3) is connected with circulating switching valve (6) are respectively equipped with a stop valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479226.4U CN204767516U (en) | 2015-07-06 | 2015-07-06 | Rectification forced circulation heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479226.4U CN204767516U (en) | 2015-07-06 | 2015-07-06 | Rectification forced circulation heating device |
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| Publication Number | Publication Date |
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| CN204767516U true CN204767516U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520479226.4U Active CN204767516U (en) | 2015-07-06 | 2015-07-06 | Rectification forced circulation heating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158735A (en) * | 2017-07-11 | 2017-09-15 | 山东海新石油化工有限公司 | A kind of distillation system |
| CN107823909A (en) * | 2017-10-23 | 2018-03-23 | 张家港市江南锅炉压力容器有限公司 | A kind of reboiler for destilling tower |
| CN108261795A (en) * | 2018-01-13 | 2018-07-10 | 安徽金禾实业股份有限公司 | The circular heating method and its device of reboiler in pyrrolidones production |
-
2015
- 2015-07-06 CN CN201520479226.4U patent/CN204767516U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158735A (en) * | 2017-07-11 | 2017-09-15 | 山东海新石油化工有限公司 | A kind of distillation system |
| CN107823909A (en) * | 2017-10-23 | 2018-03-23 | 张家港市江南锅炉压力容器有限公司 | A kind of reboiler for destilling tower |
| CN108261795A (en) * | 2018-01-13 | 2018-07-10 | 安徽金禾实业股份有限公司 | The circular heating method and its device of reboiler in pyrrolidones production |
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