CN203899191U - Rectifying tower - Google Patents

Rectifying tower Download PDF

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Publication number
CN203899191U
CN203899191U CN201420298818.1U CN201420298818U CN203899191U CN 203899191 U CN203899191 U CN 203899191U CN 201420298818 U CN201420298818 U CN 201420298818U CN 203899191 U CN203899191 U CN 203899191U
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CN
China
Prior art keywords
condenser
distribution plate
tower
liquid collecting
rectifying
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Expired - Lifetime
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CN201420298818.1U
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Chinese (zh)
Inventor
江石平
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Yibin Shi Ping Spices Co Ltd
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Yibin Shi Ping Spices Co Ltd
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Abstract

The utility model relates to a rectifying tower, belonging to the field of rectifying tower equipment. The rectifying tower is mainly used for solving the technical problems of channeling and turbulent flow formed by uneven distribution of feed liquid in the rectifying tower when the quantity of reflux is high. The main technical scheme of the rectifying tower is as follows: the rectifying tower comprises a tower kettle, a plurality of rectifying tower sections and a condenser. The rectifying tower is characterized in that the condenser comprises a tower-middle condenser and an overhead condenser, wherein the tower-middle condenser comprises a liquid collection funnel, a condensing coil and a distribution disc, the condensing coil is spirally arranged around the liquid collection funnel, the distribution disc is arranged below the liquid collection funnel, and a plurality of small holes are formed in the bottom of the distribution disc; the overhead condenser comprises a condensing coil and a distribution disc, an exhausting pipe is arranged on the overhead condenser, the distribution disc is arranged below the condensing coil, an outer backflow pipe connected to the exterior of a rectifying shell is arranged between the condensing coil and the distribution disc, and a plurality of small holes are formed in the bottom of the distribution disc. The rectifying tower is applied to chemical industry production with high rectifying-processing capacity and separation purity requirement.

Description

A kind of rectifying column
Technical field
The utility model relates to a kind of rectifying column, belongs to rectifying column apparatus field.
Background technology
Rectifying be liquid mixture through repeatedly partial gasification and partial condensation, make fluid separation applications become the operation of quite pure component.General rectifier unit is made up of equipment such as rectifying column, reboiler, condensers.Operation principle is: steam enters at the bottom of by rectifying tower, carry out counter current contacting with decline liquid, two contact, volatile (low boiling) component in decline liquid constantly shifts in steam, and difficulty volatilization (higher boiling) component in steam constantly shifts in decline liquid, and steam more approaches tower top, its volatile components concentration is higher, and at the bottom of decline liquid more approaches tower, the more enrichment of its difficult volatile component, reaches the object that component separates.The steam being risen by tower top enters condenser, and a part for the liquid of condensation is returned to tower top as phegma and entered in rectifying column, and remaining part is taken out as distillate.The liquid that tower bottom flow goes out, a part is wherein sent into reboiler, and after thermal evaporation, steam returns in tower, and another part liquid takes out as still raffinate.
Wherein the condenser in rectifier unit comprises liquid collector, condenser pipe.The effect of condenser is by the successively further rectifying of rising steam and the fractional condensation through stripping section and rectifying section, improves purity.Generally be provided with multiple condensers at rectifying column, to improve the purity of products of separated.
It is CN 201094869Y that State Intellectual Property Office discloses a publication number on August 6th, 2008, and name is called the Chinese utility model patent of " a kind of Multipurpose internal reflux rectifier unit ".This patent discloses and in this rectifying column, has been provided with two condensers, and below first-stage condenser, is provided with liquid collecting distributor.Liquid collecting distributor is made up of liquid collecting ring, liquid collecting funnel, downspout, distribution funnel and take-off pipe, liquid collecting funnel is arranged on liquid collecting ring below, in liquid collecting funnel, downspout is set, downspout stretches out liquid collecting funnel bottom and is communicated with inverted distribution funnel, and liquid collecting funnel bottom side direction is drawn take-off pipe.
This utility model has following shortcoming:
(1) although be designed with one-level, secondary condenser, its effect, with on common condenser basis, increases condenser pipe dish number and there is no too large difference, and the purity that improves product is also nowhere near.
(2) below first-stage condenser, be provided with the liquid collecting distributor being made up of liquid collecting ring, liquid collecting funnel, downspout, distribution funnel and take-off pipe, its B-grade condensation liquid all flows into liquid collecting funnel with one-level condensate liquid after declining, and draws rear input groove by drainage tube.In the time that capacity of returns is large, firsts and seconds condensate liquid all flows into liquid collecting distributor, thereby is easy to cause the skewness of feed liquid to cause channel, turbulent flow, has a strong impact on rectification effect; Thereby cause that this condenser can not be used in enormous quantities, the high production of purity requirement.
(3) in the time that feed liquid is back to distribution funnel, go downstream along distribution funnel outer wall, can not flow into equably lower tower joint, cause feed liquid skewness, affect whole separation process.When particularly capacity of returns is large, this shortcoming is more obvious.
Utility model content
For in prior art because feed liquid skewness causes channel, turbulent flow, cause product purity low, the shortcoming such as efficiency is low, the utility model proposes a kind of rectifying column equipment,, separation purity large for rectification process amount requires high Chemical Manufacture.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of rectifying column, comprises tower reactor, multiple rectifying column joint and condenser, it is characterized in that: described condenser comprises condenser and overhead condenser in tower, in tower, condenser is located at rectifying column with overhead condenser and saved and be connected by rectifying column; In described tower, condenser comprises liquid collecting funnel, condenser coil and distribution plate, described condenser coil spirals and is placed in around liquid collecting funnel, described liquid collecting funnel top is made as multilayer liquid collecting cone dish, leave between layers gap and be fixedly connected with, described distribution plate is located at liquid collecting funnel below, and distribution plate bottom has multiple apertures; Described overhead condenser comprises condenser coil and distribution plate, described overhead condenser top is provided with escape pipe, described distribution plate is located at condenser coil below, between described condenser coil and distribution plate, be provided with the exteenal reflux pipe that is connected to rectifying hull outside, described distribution plate bottom has multiple apertures.
Described multilayer liquid collecting cone dish is 2~4 layers, and from upper strata to lower floor, on liquid collecting cone dish, port radius reduces gradually, and lower port radius also reduces gradually.
Being welded and fixed by bonding jumper between layers of described multilayer liquid collecting cone dish.
Between described escape pipe and exteenal reflux pipe, be provided with successively normal straight tube condenser, coil condenser, distributing trough and control valve.
Described aperture is circular, is uniformly distributed in distribution plate bottom.
The outer wall upper edge of described distribution plate is made as zigzag.
Described rectifying housing is provided with the glass sight glass of observing feed liquid distribution condition in distribution plate.
Described rectifying housing is provided with the water inlet and the delivery port that are connected with condenser coil two ends, water inlet under, delivery port is upper.
Operation principle of the present utility model is: the mixed vapour being risen by rectifying tower reactor, after the condensation for the first time of condenser in tower, wherein: high boiling substance becomes liquid state from gaseous state, drop to after the distribution plate of condenser in tower, be uniformly distributed and flow down from the aperture of distribution plate bottom, be back to lower floor's rectifying column joint; Low-boiling point material still continues to rise to overhead condenser with gaseous state, wherein, liquefy after the condensation of higher material flow to lower floor's tower joint from the aperture of distribution plate bottom after distribution plate is uniformly distributed, and enters distribution plate after liquid collecting collection funnel by condenser in tower; Rise to compared with low-boiling point material after the escape pipe of tower top, after normal straight tube condenser and coil condenser condensation, drop to distributing trough, and regulate exteenal reflux amount by control valve.Part feed liquid flows back in tower through exteenal reflux pipe, forms exteenal reflux, and another part is collected after tremie pipe declines.This cyclic process, can separate the temperature difference and be the mixture of 1 DEG C, greatly improves the purity of products of separated.
The beneficial effects of the utility model are:
1. in tower of the present utility model, the liquid collecting funnel top of condenser is made as 2~4 layers of liquid collecting cone dish, leave between layers gap, for collecting the phegma of upper strata Ta Jie when, lower floor's steam continues to rise by gap, can in tower, not produce vapour lock, thereby improve rectification effect.
2, the utility model is provided with distribution plate below liquid collecting funnel, and distribution plate bottom has aperture, can collect to greatest extent condensation feed liquid and save by aperture uniform distribution to lower floor's tower, has avoided a large amount of feed liquids to flow directly into tower joint, and has formed channel, turbulent flow.
3, rectifying housing of the present utility model is provided with glass sight glass, is used for distribution plate place feed liquid distribution condition in observing tower, so that production control process in time ensures product quality.Meanwhile, in the time that accumulation in distribution plate has the impurity producing in production process, removable sight glass is cleared up, and avoids tearing open the trouble of tower cleaning, thereby saves time and labour, reduces production costs.
4, the upper edge of the utility model distribution plate is made as zigzag.In the time that capacity of returns is large, feed liquid flows down along distribution plate outer wall after recess overflow from distribution plate edge zigzag, and feed liquid distributes effective.If upper edge is without zigzag, when capacity of returns large, when feed liquid is filled distribution plate, can increase the surface tension of distribution plate the superiors feed liquid, cause the feed liquid can not be along distribution plate outer wall uniform flow, feed liquid accumulation is a certain amount of overflows in a large number afterwards, because can not uniform distribution forming channel.
5, overhead condenser of the present utility model is provided with escape pipe and exteenal reflux pipe, and low-boiling-point substance rises and after normal straight tube condenser and coil condenser condensation, is assigned with groove and collects through escape pipe.Regulate capacity of returns according to condition of production control valve, part feed liquid is collected, and another part flow to distribution plate by exteenal reflux pipe, forms exteenal reflux liquid, and feed liquid is again separated, purified, and improves separation accuracy and product purity.
6, adopt rectifying column of the present utility model, the separable temperature difference is the material of 1 DEG C, and the temperature difference of traditional separate substance is 3~5 DEG C, can improve separative efficiency 35%~50%, thereby realize the beneficial effect that purity is high, efficiency is high simultaneously.
brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of distribution plate;
Fig. 3 is 3 layers of liquid collecting funnel structure schematic diagram;
Fig. 4 is 2 layers of liquid collecting funnel structure schematic diagram;
Fig. 5 is 4 layers of liquid collecting funnel structure schematic diagram;
1-liquid collecting funnel 2-liquid collecting cone dish 3-condenser coil 4-water inlet 5-delivery port 6-sight glass 7-distribution plate 8-aperture 9-rectifying column joint 10-escape pipe 11-exteenal reflux pipe 12-rectifying housing 13-straight tube condenser 14-coil condenser 15-distributing trough 16-control valve 17-bonding jumper in figure.
Detailed description of the invention
Below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the utility model is described in further detail.
Embodiment 1
A kind of rectifying column, comprises tower reactor, multiple rectifying column joint and condenser, it is characterized in that: described condenser comprises condenser and overhead condenser in tower, in tower, condenser is located at rectifying column with overhead condenser and save 9 by rectifying column and be connected; In described tower, condenser comprises liquid collecting funnel 1, condenser coil 3 and distribution plate 7, described condenser coil 3 spirals and is placed in around liquid collecting funnel 1, described liquid collecting funnel 1 top is made as multilayer liquid collecting cone dish 2, leave between layers gap and be fixedly connected with, described distribution plate 7 is located at liquid collecting funnel 1 below, and distribution plate 7 bottoms have multiple apertures 8; Described overhead condenser comprises condenser coil 3 and distribution plate 7, described overhead condenser top is provided with escape pipe 10, described distribution plate 7 is located at condenser coil 3 belows, between described condenser coil 3 and distribution plate 7, be provided with the exteenal reflux pipe 11 that is connected to rectifying housing 12 outsides, described distribution plate 7 bottoms have multiple apertures 8.
The present embodiment is as the most basic embodiment, simple in structure, is easy to realize.Adopt such structure, the feed liquid of condenser after collecting to greatest extent rising steam at the bottom of the phegma of upper strata Ta Jie and tower and being condensed in tower, and flow down after distribution plate 7 uniform distributions, rectifying again, separation, can effectively avoid feed liquid directly to flow down, in tower, form channel, turbulent flow and affect the problem of rectification effect.The overhead condenser steam that further condensation is risen, and low-boiling point material is connected to common condenser by escape pipe, after condensation, part feed liquid is back in tower and forms exteenal reflux, and multiple condensation, to improve rectification effect and product purity.
Embodiment 2
The present embodiment is identical with embodiment 1, on the basis of embodiment 1:
Described multilayer liquid collecting cone dish 2 is 2~4 layers, and from upper strata to lower floor, on liquid collecting cone dish, port radius reduces gradually, and lower port radius also reduces gradually.
The present embodiment is as a preferred embodiments, and multilayer liquid collecting cone dish is made as 2~4 layers for optimum efficiency.If be made as 1 layer, collecting amount is too little, can stop the rising of steam in tower simultaneously, affects rectification effect; If be made as more than 5 layers, even if leave gap between every layer, because the number of plies is too many, stop that area is large, still can cause the interior steam rising of tower time, be obstructed, therefore 2~4 layers is the most suitable number of plies.Liquid collecting cone dish 2 go up between layers port radius and lower port radius all reduces gradually.For example, when liquid collecting cone dish is 3 layers, 3 layers of liquid collecting cone dish 2 of institute are from upper strata to lower floor, and the radius of upper and lower mouthful reduces gradually.For example, when liquid collecting funnel 1 height overall is 620mm, it is 150mm that liquid collecting cone coils port radius on 2 ground floors, lower port radius is 100mm, on the second layer, port radius is 110mm, lower port radius is 75mm, and the 3rd layer of upper port radius is 60mm, and lower port radius is 25mm, leave between layers the gap of 10mm, as the passage of rising steam; Be welded and fixed by bonding jumper 17 between layers, the end opening than adjacent upper strata cone dish suitable for reading of lower floor's cone dish is slightly large, can make to collect to greatest extent backflow feed liquid and can also avoid the gap that collected feed liquid is leaked between cone dish 2 from liquid collecting to flow out.
Embodiment 3
The present embodiment is identical with embodiment 2, on the basis of embodiment 2:
Being welded and fixed by bonding jumper 17 between layers of described multilayer liquid collecting cone dish 2.
Between described escape pipe 10 and exteenal reflux pipe 11, be provided with successively normal straight tube condenser 13, coil condenser 14, distributing trough 15 and control valve 16.
The present embodiment is as another preferred embodiments, and being welded and fixed by bonding jumper 17 between layers of multilayer liquid collecting cone dish 2, ensures layer and only apertured while of layer, improves the steadiness of whole liquid collecting funnel 1; Between escape pipe 10 and exteenal reflux pipe 11, be provided with successively normal straight tube condenser 13, coil condenser 14, distributing trough 15 and control valve 16, the low-boiling point material that rises to tower top enters escape pipe 10 with gaseous state, after normal straight tube condenser 13 and coil condenser 14 condensations, be assigned with groove 15 and collect, regulate exteenal reflux amount according to the condition of production.When product that production purity requirement is high, added value is high, this process that can repeatedly circulate, improves product purity.
Embodiment 4
The present embodiment is identical with embodiment 3, on the basis of embodiment 3:
Described aperture 8 is circular, is uniformly distributed in distribution plate 7 bottoms.
The outer wall upper edge of described distribution plate 7 is made as zigzag.
The present embodiment is as another preferred embodiments, and aperture is made as circle, and is uniformly distributed in distribution plate 7 bottoms, can establish aperture 8 in distribution plate 7 bottoms as much as possible, and the feed liquid of collection is flow to lower floor's tower joint as early as possible.When capacity of returns very large, the large quantity of fluid of distribution plate 7 interior collections can not flow down while even filling whole distribution plate 7 in time, in order to reach the effect of same uniform distribution, distribution plate outer wall upper edge is made as zigzag, ensure overflow part overflow time along distribution plate 7 outer wall uniform flows.
Embodiment 5
A kind of rectifying column, comprises tower reactor, multiple rectifying column joint and condenser, it is characterized in that: described condenser comprises condenser and overhead condenser in tower, in tower, condenser is located at rectifying column with overhead condenser and save 9 by rectifying column and be connected; In described tower, condenser comprises liquid collecting funnel 1, condenser coil 3 and distribution plate 7, described condenser coil 3 spirals and is placed in around liquid collecting funnel 1, described liquid collecting funnel top is made as multilayer liquid collecting cone dish 2, leave between layers gap and be fixedly connected with, described distribution plate 7 is located at liquid collecting funnel 1 below, and distribution plate 7 bottoms have multiple apertures 8; Described overhead condenser comprises condenser coil 3 and distribution plate 7, described overhead condenser top is provided with escape pipe 10, described distribution plate 7 is located at condenser coil 3 belows, between described condenser coil 3 and distribution plate 7, be provided with the exteenal reflux pipe 11 that is connected to rectifying housing 12 outsides, described distribution plate 7 bottoms have multiple apertures 8.
Described multilayer liquid collecting cone dish 2 is 2~4 layers, and from upper strata to lower floor, on liquid collecting cone dish, port radius reduces gradually, and lower port radius also reduces gradually.
Being welded and fixed by bonding jumper 17 between layers of described multilayer liquid collecting cone dish 2.
Between described escape pipe 10 and exteenal reflux pipe 11, be provided with successively normal straight tube condenser 13, coil condenser 14, distributing trough 15 and control valve 16.
Described aperture 8 is circular, is uniformly distributed in distribution plate 7 bottoms.
The outer wall upper edge of described distribution plate 7 is made as zigzag.
Described rectifying housing 12 is provided with the glass sight glass 6 of observing the interior feed liquid distribution condition of distribution plate 7.
Described rectifying housing 12 is provided with the water inlet 4 and delivery port 5 that are connected with condenser coil 3 two ends, water inlet 4 under, delivery port 5 is upper.
The present embodiment is as preferred forms, and rectifying housing 12 is provided with the glass sight glass 6 of observing the interior feed liquid distribution condition of distribution plate 7, can observe in time the condition of production in tower, occurs that any fault can process in time.In the time observing in tower that there is impurity distribution plate 7 positions, removable sight glass is processed, and has avoided tearing open the hard work of tower, saves production cost, and increases work efficiency.Rectifying housing 12 is provided with the water inlet 4 and delivery port 5 that are connected with condenser coil 3 two ends, water inlet 4 under, delivery port 5, upper, utilizes condensed water self gravitation, can ensure to be full of condensed water in condenser coil, improves the utilization rate of condensation effect and water resource.
The utility model is not limited to above-described embodiment, and according to the description of above-described embodiment, those of ordinary skill in the art also can make some apparent changes to the utility model, but within these changes all should fall into the protection domain of the utility model claim.

Claims (8)

1. a rectifying column, comprises tower reactor, multiple rectifying column joint and condenser, it is characterized in that: described condenser comprises condenser and overhead condenser in tower, in tower, condenser is located at rectifying column with overhead condenser and save (9) by rectifying column and be connected; In described tower, condenser comprises liquid collecting funnel (1), condenser coil (3) and distribution plate (7), described condenser coil (3) spirals and is placed in liquid collecting funnel (1) around, described liquid collecting funnel top is made as multilayer liquid collecting cone dish (2), leave between layers gap and be fixedly connected with, described distribution plate (7) is located at liquid collecting funnel (1) below, and distribution plate (7) bottom has multiple apertures (8); Described overhead condenser comprises condenser coil (3) and distribution plate (7), described overhead condenser top is provided with escape pipe (10), described distribution plate (7) is located at condenser coil (3) below, between described condenser coil (3) and distribution plate (7), be provided with and be connected to the outside exteenal reflux pipe (11) of rectifying housing (12), described distribution plate (7) bottom has multiple apertures (8).
2. rectifying column according to claim 1, is characterized in that: described multilayer liquid collecting cone dish (2) is 2~4 layers, and from upper strata to lower floor, the upper port radius of liquid collecting cone dish (2) reduces gradually, and lower port radius also reduces gradually.
3. rectifying column according to claim 2, is characterized in that: being welded and fixed by bonding jumper (17) between layers of described multilayer liquid collecting cone dish (2).
4. rectifying column according to claim 1, is characterized in that: between described escape pipe (10) and exteenal reflux pipe (11), be provided with successively normal straight tube condenser (13), coil condenser (14), distributing trough (15) and control valve (16).
5. rectifying column according to claim 1, is characterized in that: described aperture (8), for circular, is uniformly distributed in distribution plate (7) bottom.
6. rectifying column according to claim 1, is characterized in that: the outer wall upper edge of described distribution plate (7) is made as zigzag.
7. rectifying column according to claim 1, is characterized in that: described rectifying housing (12) is provided with the glass sight glass (6) of observing the interior feed liquid distribution condition of distribution plate (7).
8. rectifying column according to claim 1, is characterized in that: described rectifying housing (12) is provided with the water inlet (4) that is connected with condenser coil (3) two ends and delivery port (5), water inlet (4) under, delivery port (5) is upper.
CN201420298818.1U 2014-06-06 2014-06-06 Rectifying tower Expired - Lifetime CN203899191U (en)

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CN201420298818.1U CN203899191U (en) 2014-06-06 2014-06-06 Rectifying tower

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106512463A (en) * 2016-12-20 2017-03-22 广西壮族自治区林业科学研究院 Gas and liquid separation device of rectifying tower
CN112546660A (en) * 2020-12-24 2021-03-26 舒俊康 Chemical rectification tower
CN112915568A (en) * 2021-04-01 2021-06-08 江西益普生药业有限公司 Medicinal soybean oil rectifying equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106512463A (en) * 2016-12-20 2017-03-22 广西壮族自治区林业科学研究院 Gas and liquid separation device of rectifying tower
CN112546660A (en) * 2020-12-24 2021-03-26 舒俊康 Chemical rectification tower
CN112915568A (en) * 2021-04-01 2021-06-08 江西益普生药业有限公司 Medicinal soybean oil rectifying equipment

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Granted publication date: 20141029