CN202289528U - Rectification experimental apparatus capable of safely showing flooding phenomenon in plate tower - Google Patents
Rectification experimental apparatus capable of safely showing flooding phenomenon in plate tower Download PDFInfo
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- CN202289528U CN202289528U CN2011203830951U CN201120383095U CN202289528U CN 202289528 U CN202289528 U CN 202289528U CN 2011203830951 U CN2011203830951 U CN 2011203830951U CN 201120383095 U CN201120383095 U CN 201120383095U CN 202289528 U CN202289528 U CN 202289528U
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Abstract
The utility model relates to a plate tower rectification experimental apparatus, which comprises a tower kettle, a tower body and an overhead condenser, also comprises an overhead condensate return-flow system, a tower body middle feed liquid supply system and a tower kettle feed liquid self-exhaust system, wherein the tower kettle, the tower body and the overhead condenser are integrally connected; the tower body comprises a peering section made of a glass material, and the length of the peeling section is equal to the sum of the lengths of at least three tower plates. The plate tower rectification experimental apparatus can be used for showing flooding phenomenon in the plate tower, conveniently and rapidly completing partial reflux rectification operation, and measuring the whole tower efficiency and the single plate efficiency of the plate tower rectification apparatus. The rectification experimental apparatus has advantages of simplified design, convenience for use, and good repeatability of measuring data, and can be used in experimental teaching of chemical industry and related majors.
Description
Technical field
The utility model relates to a kind of plate column rectifying experimental provision, and the especially a kind of rectifying experimental provision that can show liquid flooding phenomenon in the plate column belongs to technical field of chemical engineering.
Background technology
Rectifying is the unit operations of a kind of separating liquid mixture common in the industry, is the content that institution of higher education's chemical industry and relevant speciality student must learn, thereby the rectifying experiment also just becomes one of chemical industry and relevant speciality students practise teaching main contents.Usually plate column rectifying experimental provision all comprises one section transparent tower body made from glass material, is used to represent the tower plate structure and the flow regime of vapour-liquid two on column plate of plate column; Can measure simultaneously full column efficiency and (perhaps) veneer efficient etc.The plate column liquid flooding is a kind of phenomenon that occurs when the gas-liquid flow exceeds the column plate load-bearing capacity in the plate column, and the plate distillation column of this moment is in the abnormal operation operating mode, and the separative efficiency of rectifying column can obviously descend.Some plate column rectifying experimental provision has had the function of showing the liquid flooding phenomenon at present; But at first occur in transparent tower sections owing to be not sure of the liquid flooding phenomenon; Observe the liquid flooding phenomenon, cause tower still volume and still liquid measure to increase thereby will prolong experimental period.So not only increase the energy consumption of experimentation, for the beginner, also had certain operating safety.In addition; Common rectifying experimental provision generally adopts measuring pump to control inlet amount, overhead product amount, tower still lifting rate at present; Reasons such as precision owing to feed pump; Make that being difficult to keep the inventory that passes in and out rectifying column when carrying out the partial reflux distillation operation reaches balance, causes the failure of part distillation operation easily.
The utility model content
The utility model technical problem to be solved is; A kind of liquid flooding phenomenon that can show easily and safely in the plate distillation column is provided; And can carry out infinite reflux, partial reflux distillation operation, measure the column efficiency of plate distillation column under the different operating operating mode and the experimental provision of plate efficiency.
In order to address the above problem; The rectifying experimental provision that can show liquid flooding phenomenon in the plate distillation column that the utility model provides; It comprises tower still, tower body and overhead condenser, and it comprises that also overhead condensation liquid return-flow system, tower body middle part feed liquid feed system and tower still feed liquid are from heat-extraction system; Described tower still, tower body and overhead condenser are connected as a single entity from bottom to top; Described tower body comprises one section and spies on joint with what glass material was made, and its length comprises 3 column plates at least;
Described 3 column plates spying in the joint wherein have a distance between plates to dwindle 40%, downspout area than other normal panel spacing and have reduced 50% than other normal downspout area;
Described overhead condensation liquid return-flow system comprises the flowmeter and the overhead product storage tank of an overflow-type backflow control flume, control backflow volume;
Described tower body middle part feed liquid feed system comprises a material liquid storage tank, charging measuring pump, feed rate meter, feed liquid preheater;
Described tower still feed liquid comprises tower still balance pipe, still liquid overflow pipe and a bottom product storage tank from heat-extraction system.
This part is come according to claims copy, removes Reference numeral simultaneously.As: the following Reference numeral that removes
A kind of rectifying experimental provision that can show liquid flooding phenomenon in the plate column; It comprises tower still (4), tower body (8), overhead condenser (13) and overhead condensation liquid return-flow system; It comprises that also feed liquid make-up system and tower still feed liquid are from heat-extraction system; Described feed liquid make-up system is made up of material liquid storage tank (24), charging measuring pump (23), feed rate meter (22) and feed liquid preheater (20) and is connected through pipeline successively, and feed liquid preheater (20) is connected to the middle part of tower body (8) again through pipeline; Described tower still feed liquid is made up of bottom product storage tank (27), still liquid overflow pipe (26) and tower still balance pipe (25) from heat-extraction system; One end of still liquid overflow pipe (26) and tower still balance pipe (25) all is connected with bottom product storage tank (27); The other end of still liquid overflow pipe (26) is connected the middle and upper part of tower still (4), and the other end of tower still balance pipe (25) is connected with the top of tower still (4).
Above-mentioned tower body (8) middle part is equipped with spies on joint (7); The described joint (7) of spying on locates to have installed 3 blocks of column plates (7-1,7-2,7-3); Wherein the distance between plates between first block of column plate (7-1) and the second block of column plate (7-2) is less relatively, and less relatively to the downspout area of second block of column plate (7-2) from the 3rd block of column plate (7-3).
Above-mentioned overhead condensation liquid return-flow system contains overflow-type backflow control flume (15), and overflow-type backflow control flume (15) is connected with overhead condenser (13), phegma flow meter (18) and overhead product storage tank (21) respectively through pipeline.
After adopting above structure, the rectifying experimental provision that the utility model can be showed liquid flooding phenomenon in the plate distillation column compared with prior art has the following advantages:
Utilize this experimental provision can carry out conventional infinite reflux and partial reflux rectifying experiment, can measure full column efficiency, also can measure veneer efficient.Can show liquid flooding phenomenon former because of difference thereby that cause through regulating stream-liquid two-phase flow amount in the plate distillation column simultaneously.Overhead condensation liquid return-flow system and the tower still feed liquid that utilization has an overflow-type backflash can well guarantee to pass in and out the material balance of rectifying column from heat-extraction system, makes partial reflux rectifying experimental implementation be more prone to.
Description of drawings
Fig. 1 is a plate column rectifying experimental provision sketch map.
Wherein, 1 tower still electric heater, 2 tower still leakage fluid drams, 3 tower bottoms positions meter, 4 tower stills, 5 column plates, 6 thermometers, 7 are spied on joint, 8 tower bodies, 9 cooling water flow meters, 10 cooling water inlet pipes, the outlet of 11 inert gases, 12 cooling water outlet pipes, 13 overhead condensers, 14 cat head balance pipes, 15 overflow-type backflow control flumes, 16 distillate take-off pipes, 17 overhead product sample taps, 18 phegma flow meters, 19 charging apertures, 20 feed liquid preheaters, 21 overhead product storage tanks, 22 feed rate meters, 23 charging measuring pumps, 24 material liquid storage tanks, 25 tower still balance pipes, 26 still liquid overflow pipes, 27 bottom product storage tanks.
Fig. 2 spies on three column plate distances between plates in joint place and the big logotype of downspout in the plate column rectifying experimental provision.
Wherein, the distance between plates between first column plate 7-1 and the second column plate 7-2 reduces 40% relatively; The downspout area of 7-3 to the second column plate 7-2 of the 3rd block of column plate dwindles 50% relatively.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
As shown in Figure 1; The utility model can be showed the rectifying experimental provision of liquid flooding phenomenon in the plate distillation column; It comprises tower still and electric heating system, and with reference to the current experiments device, tower still and electric heating system mainly are made up of tower still electric heater 1, tower still leakage fluid dram 2, tower bottoms position meter 3, tower still 4.
It also comprises tower body 8 and overhead condenser 13, and it is middle with overhead condenser 13 that tower body 8 is in tower still 4, and integrally welded with tower still 4 and overhead condenser 13.Joint 7 is spied at tower body 4 middle parts, on each piece column plate thermometer 6 is installed; Overhead condenser 13 and cooling water inlet pipe 10, cooling water outlet pipe 12 link to each other through pipeline, and overhead condenser 13 is provided with inert gas outlet 11, and on connecting line, arranges parts such as suitable flowmeter (like liquid spinner flowmeter 9), valve.
The described joint 7 of spying on has 3 column plate 7-1,7-2 and 7-3, and is as shown in Figure 2.Wherein the distance between plates between first column plate 7-1 and the second column plate 7-2 is all littler than other distance between plates, and it is excessive and liquid flooding phenomenon that cause at first appears at first column plate 7-1 and second column plate 7-2 place to guarantee that Yin Tanei rising quantity of steam increases the liquid foam entrainment amount; The downspout area of 7-3 to the second column plate 7-2 of the 3rd block of column plate is all littler than other downspout area, can guarantee that Yin Tanei dropping liq flow increases the flooding that has surpassed the downspout ability and caused and at first appears at the 3rd column plate 7-3 place.Spy on joint 7 place's tray spacings and downspout area through adjusting, at first appear in the time of can guaranteeing in the rectifying column liquid flooding to take place and spy on joint 7 places, not only help observation of students liquid flooding experimental phenomena, make that also the rectifying column operating process is safer.
Described overhead condensation liquid return-flow system feeds overflow-type backflow control flume 15 with the condensate liquid in the overhead condenser 13 by pipeline; Part fluid gets into reflux in tower through phegma flow meter 18 backs by cat head, and the fluid that overflow goes out gets into overhead product storage tank 21 through pipeline.In order to guarantee the unimpeded of overflow and phegma, with cat head balance pipe 14 overhead condenser 13 and overflow-type backflow control flume 15 are connected, and the parts such as (like overhead product sample tap 17), thermometer of having arranged sample tap in position.After adopting overflow-type backflow control flume 15, can control the constant flow of phegma, the overflow of residue condensate liquid flows into overhead product storage tank 21 through pipeline.Can guarantee that like this phegma flow is constant, help the Balance Control that distillation process reaches stable state and rectifying column turnover material.
Described tower body middle part feed liquid feed system mainly is made up of material liquid storage tank 24, charging measuring pump 23, feed rate meter 22 and feed liquid preheater 20 and is connected through pipeline successively, on connecting line, arranges parts such as suitable flowmeter (like feed rate meter 22), valve.Utilize pipeline and valve can realize the diverse location charging simultaneously, shown in charging aperture 19.
Described tower still feed liquid is made up of bottom product storage tank 27, still liquid overflow pipe 26 and tower still balance pipe 25 from heat-extraction system; One end of still liquid overflow pipe 26 and tower still balance pipe 25 all is connected with bottom product storage tank 27; The other end of still liquid overflow pipe 26 is connected the middle and upper part of tower still 4, and the other end of tower still balance pipe 25 is connected with the top of tower still 4.This overflow-type tower still feed liquid is higher than still liquid overflow pipe 26 in heat-extraction system can be with tower still 4 through still liquid overflow pipe 26 still liquid enters bottom product storage tank 27 automatically; Both can keep the interior liquid level of tower still constant, help realizing the Balance Control of rectifying column turnover inventory again.
In the field research practice, be experimental system with ethanol-water solution (the ethanol mass fraction is 20%～45%) usually, specific operation process is following.
1. infinite reflux
Feed liquid is transported in the rectifying column through feed pump 23, when tower still reduction of feed volume reaches tower still volume 70%～85%, stops charging.Open the valve on the cooling water inlet pipe 10, and then open tower kettle heater 1 power supply.When tower still temperature rises to more than the still liquid boiling point, just there is steam to rise to cat head gradually by tower is low, through overhead condenser 13 condensations, condensate liquid all gets in the tower through return duct.After after a while, the temperature on tower still temperature, tower top temperature and each the piece column plate is all kept invariable, and total reflux operation promptly reaches stable state.At this moment take a sample respectively from tower still leakage fluid dram 2 and overhead product sample tap 17, and analyze its composition and get final product.
2. partial reflux
When infinite reflux reaches stable state, open feed pump, feed liquid is got in the tower from charging aperture 19 with certain flow; The flow of regulating phegma simultaneously is certain certain value, and remaining overhead condensation liquid just gets into distillate take-off pipe 16 through 15 overflows of overflow-type backflow control flume and flows into overhead product storage tank 21.The still liquid that exceeds still liquid overflow pipe 26 in the tower still 4 enters bottom product storage tank 27 automatically through still liquid overflow pipe 26, keeps the balance of turnover inventory.After after a while, each logistics capacity of temperature on tower still temperature, tower top temperature, each piece column plate and turnover rectifying column is all kept invariable, and the partial reflux distillation operation promptly reaches stable state.At this moment take a sample respectively from tower still leakage fluid dram 2, material liquid storage tank 24 and overhead product sample tap 17, and analyze its composition and get final product.
3. liquid flooding phenomenon
After total reflux operation reaches stable state, increase tower still heating power gradually, rising steam flow and dropping liq flow all can increase gradually in the tower.Can see that from spying on joint 7 liquid layer thickness on each column plate can increase gradually.Go up the increase of rising steam flow in increase and the tower of liquid layer thickness along with first column plate 7-1; The liquid foam entrainment amount can increase; Because the distance between plates between first column plate 7-1 and the second column plate 7-2 is less, the liquid foam of first column plate 7-1 top will constantly be brought to second column plate 7-2, and second liquid layer thickness on the column plate 7-2 is on the increase; Obviously more than the liquid layer thickness on the column plate 7-3, liquid flooding phenomenon that liquid foam entrainment causes that Here it is.
If increase gradually along with rising steam flow in the tower and dropping liq flow; Because the downspout area between the 3rd column plate 7-3 and second column plate 7-2 is less; Cause the 3rd column plate 7-3 top liquid layer thickness to increase gradually, until reaching the upper strata column plate, flooding that Here it is.
Claims (3)
1. the rectifying experimental provision that can show liquid flooding phenomenon in the plate column; It comprises tower still (4), tower body (8), overhead condenser (13) and overhead condensation liquid return-flow system; It is characterized in that: it comprises that also feed liquid make-up system and tower still feed liquid are from heat-extraction system; Described feed liquid make-up system is made up of material liquid storage tank (24), charging measuring pump (23), feed rate meter (22) and feed liquid preheater (20) and is connected through pipeline successively, and feed liquid preheater (20) is connected to the middle part of tower body (8) again through pipeline; Described tower still feed liquid is made up of bottom product storage tank (27), still liquid overflow pipe (26) and tower still balance pipe (25) from heat-extraction system; One end of still liquid overflow pipe (26) and tower still balance pipe (25) all is connected with bottom product storage tank (27); The other end of still liquid overflow pipe (26) is connected the middle and upper part of tower still (4), and the other end of tower still balance pipe (25) is connected with the top of tower still (4).
2. the rectifying experimental provision that can show liquid flooding phenomenon in the plate column according to claim 1 is characterized in that: described tower body (8) middle part is equipped with spies on joint (7); The described joint (7) of spying on locates to have installed 3 blocks of column plates (7-1,7-2,7-3); Wherein the distance between plates between first block of column plate (7-1) and the second block of column plate (7-2) is less relatively, and less relatively to the downspout area of second block of column plate (7-2) from the 3rd block of column plate (7-3).
3. the rectifying experimental provision that can show liquid flooding phenomenon in the plate column according to claim 1 and 2; It is characterized in that: described overhead condensation liquid return-flow system contains overflow-type backflow control flume (15), and overflow-type backflow control flume (15) is connected with overhead condenser (13), phegma flow meter (18) and overhead product storage tank (21) respectively through pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203830951U CN202289528U (en) | 2011-10-11 | 2011-10-11 | Rectification experimental apparatus capable of safely showing flooding phenomenon in plate tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203830951U CN202289528U (en) | 2011-10-11 | 2011-10-11 | Rectification experimental apparatus capable of safely showing flooding phenomenon in plate tower |
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| CN202289528U true CN202289528U (en) | 2012-07-04 |
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| CN2011203830951U Expired - Fee Related CN202289528U (en) | 2011-10-11 | 2011-10-11 | Rectification experimental apparatus capable of safely showing flooding phenomenon in plate tower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471962A (en) * | 2013-09-23 | 2013-12-25 | 莱帕克(北京)科技有限公司 | On-line rectification product concentration detecting device |
| CN104492111A (en) * | 2014-10-16 | 2015-04-08 | 中国石油化工股份有限公司 | Multipurpose small rectification system for laboratory |
| CN104922926A (en) * | 2014-03-21 | 2015-09-23 | 英尼奥斯欧洲股份公司 | Head fraction tower tower-top system |
| CN110141884A (en) * | 2019-05-27 | 2019-08-20 | 中冶焦耐(大连)工程技术有限公司 | The method and system of tower top regurgitant volume are controlled in tar production, benzene hydrogenation process |
-
2011
- 2011-10-11 CN CN2011203830951U patent/CN202289528U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471962A (en) * | 2013-09-23 | 2013-12-25 | 莱帕克(北京)科技有限公司 | On-line rectification product concentration detecting device |
| CN104922926A (en) * | 2014-03-21 | 2015-09-23 | 英尼奥斯欧洲股份公司 | Head fraction tower tower-top system |
| CN104492111A (en) * | 2014-10-16 | 2015-04-08 | 中国石油化工股份有限公司 | Multipurpose small rectification system for laboratory |
| CN104492111B (en) * | 2014-10-16 | 2018-11-13 | 中国石油化工股份有限公司 | A kind of small-sized distillation system in multipurpose laboratory |
| CN110141884A (en) * | 2019-05-27 | 2019-08-20 | 中冶焦耐(大连)工程技术有限公司 | The method and system of tower top regurgitant volume are controlled in tar production, benzene hydrogenation process |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20131011 |