CN113813630A

CN113813630A - Light component removal rectifying tower

Info

Publication number: CN113813630A
Application number: CN202111003019.8A
Authority: CN
Inventors: 付晓钟; 王景浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2021-12-21

Abstract

The invention relates to the technical field of production devices, in particular to a light component removal rectifying tower which comprises a main body, wherein the top of the main body is provided with an air outlet, the upper part of the right side of the main body is provided with a backflow port, the middle part of the left side of the main body is provided with a feed inlet, the lower part of the right side of the main body is provided with an air inlet, the bottom of the main body is provided with a discharge port, a plurality of fixing mechanisms are fixedly arranged in the main body, and the upper part of each fixing mechanism is provided with a tower plate mechanism. By designing the upper surface of the tray to a particular shape, different impurity filtering effects can be created.

Description

Light component removal rectifying tower

Technical Field

The invention relates to the technical field of production devices, in particular to a light component removal rectifying tower.

Background

The light component removing rectifying tower is a tower type gas-liquid contact device for rectifying. By utilizing the property that each component in the mixture has different volatility, namely the vapor pressure of each component is different at the same temperature, the light component (low-boiling-point substance) in the liquid phase is transferred into the gas phase, and the heavy component (high-boiling-point substance) in the gas phase is transferred into the liquid phase, thereby realizing the purpose of separation. The light component removing rectifying tower is also a mass and heat transfer device which is widely applied in petrochemical production.

The patent numbers are: CN107812503A discloses a lightness-removing tower, which comprises the following main contents: a lightness-removing column comprising: the device comprises a basic ring plate, a rib plate, a skirt, a cover plate, an opening outlet pipe rib plate, a liquid outlet pipe, a tower bottom conical seal head, an exhaust pipe, a lower cylinder, a coil pipe, a field liquid level meter pipe orifice, a lower transmission liquid level meter pipe orifice, an upper field liquid level meter pipe orifice, a liquid level meter joint, a lower conical cylinder, a pressure gauge joint, a first thermocouple orifice, a middle cylinder, a second thermocouple orifice, a tower tray, a first liquid seal disc, an upper conical cylinder, an upper cylinder, a backflow inlet, a second liquid seal disc, a tower top oval seal head, a gas outlet, a vent port and an upper pressure gauge orifice. The light component removing tower is simple in structure and low in manufacturing cost, and is internally provided with three layers of cylinders and a continuously coiled coil pipe, so that the light component removing tower has the advantages of being large in production capacity, high in separation efficiency, small in pressure drop, small in liquid holdup, large in operation elasticity and the like, and is good in light component removing effect and high in efficiency.

The existing light component removal rectifying tower at least has the following problems which are not solved:

1. in the actual production, when the gas velocity is too low or the opening of the tower plate is too large, the tower plate can generate a liquid leakage phenomenon;

2. the ascending air flow can bring the liquid drops on the lower tower plate to the upper tower plate sometimes, and the liquid drops are not easy to drop, so that the pollution of the upper tower plate is caused;

therefore, the light component removal rectifying tower is provided, and the liquid leakage phenomenon and the pollution phenomenon of an upper layer tower plate can be effectively reduced.

Disclosure of Invention

The invention aims to provide a light component removal rectifying tower to reduce liquid leakage and pollution of an upper layer tower plate in actual production.

In order to achieve the purpose, the invention provides the following technical scheme: the light component removal rectifying tower comprises a main body, wherein a gas outlet is formed in the top of the main body, a backflow port is formed in the upper portion of the right side of the main body, a feed inlet is formed in the middle of the left side of the main body, a gas inlet is formed in the lower portion of the right side of the main body, a discharge outlet is formed in the bottom of the main body, a plurality of fixing rings are fixedly arranged in the main body, a tower plate is arranged on the upper portions of the fixing rings, the fixing rings are used for fixing the tower plate on the main body, and the tower plate is used for providing a contact place for gas phase and liquid phase.

Preferably, the outer ends of the channels of the air outlet at the top of the main body, the reflux opening at the upper part of the right side, the feed inlet at the middle part of the left side, the air inlet at the lower part of the right side and the discharge opening at the bottom are all connected with the flanges in a welding manner.

Through the outer end welding flange of passageway at gas outlet, backward flow mouth, feed inlet, air inlet and discharge gate, more have the flexibility for traditional welding, when accidents such as appear leaking and then need changing with the pipeline that the rectifying column bulk phase is connected, can make the installation more convenient with the dismantlement when guaranteeing sealed effect.

Preferably, the fixed ring comprises a supporting ring and cylindrical bosses, the supporting ring is of a three-layer stepped annular structure, the supporting ring is fixed inside the main body, and the four cylindrical bosses are uniformly distributed on the upper surface of the supporting ring along the circumferential direction.

Preferably, the column plate is circular stair structure, the ladder of column plate with the ladder of filler ring is corresponding, it has a plurality of sieve meshes to open on column plate upper surface and the vertical ladder face, four fixed orificess have evenly been seted up along circumference to the upper surface of column plate, the cylinder boss inserts in the fixed orifices, the edge of fixed orifices is provided with the relief hole, and the lower extreme of relief hole is provided with the downcomer, and the upper portion edge of relief hole is equipped with the overflow weir.

The supporting ring can support the tower plate, the supporting ring and the tower plate are arranged into a three-layer ladder structure, different from a common plane tower plate, the tower plate with the ladder structure can store more liquid and is beneficial to full contact between gas and liquid, more gas can be contacted with the liquid through the sieve holes by arranging a plurality of sieve holes on the upper surface of the tower plate and a vertical ladder surface, the cylindrical boss is arranged on the supporting ring and is provided with a fixed hole matched with the size of the cylindrical boss, the tower plate is only required to be placed on the fixed ring during installation, the cylindrical boss is inserted into the fixed hole, the liquid flowing down from the upper plate can be temporarily blocked by arranging an overflow weir, a certain liquid height is kept, the liquid can be fully contacted with the gas flowing out from the sieve holes, and the liquid of the upper plate can stably flow to the lower plate by arranging a downcomer, the phenomenon of pollution caused by splashing everywhere can not occur.

Preferably, the lower surface of the tray is provided with an arch structure.

Through setting up the lower surface of column plate to the arch, when the liquid of lower plate splashes the bottom of upper plate along with gas, can flow bottom tip portion along the arch surface under the action of gravity, and then drip back the lower plate, can not stop and cause the pollution at the upper plate lower surface.

Preferably, the size of the upper section of the sieve hole is smaller than that of the lower section.

Through designing into the sieve mesh the size that upper cross sectional dimension is less than lower cross section, the liquid of upper surface is difficult for leaking into the hypoplastron through the sieve mesh, easily knows according to the venturi effect moreover, when restricted flow when overflowing the section through reducing, the phenomenon that the velocity of flow increases appears in the fluid, its velocity of flow with overflow the section and become inversely proportional, so when gaseous when passing through the sieve mesh, the sieve mesh can produce the effect that increases the velocity of flow to gas for liquid is difficult for leaking the hypoplastron more.

Preferably, the inner surface of the main body and the outer surface of the tower plate are coated with an anti-corrosion coating.

The inner surface of the main body and the outer surface of the tower plate are coated with the anti-corrosion coating, so that the working surfaces of the tower plate and the main body can be well protected, and the service life of the equipment is effectively prolonged.

In one embodiment of the present invention, the upper surface of the tray is wavy, and the sieve holes are provided in the upper surface at raised portions.

The upper surface of the tower plate is designed into a wave shape, the two sides of the sieve holes are the same in shape, and the outer surface of the tower plate has a radian, so that the influence of the whole tower plate on the flow velocity of external liquid is low, but as the highest point and the lowest point of the upper surface have a certain height difference, part of insoluble or insoluble solid matters in the liquid can be left in the concave part in the process of flowing through the liquid, and concentrated cleaning is carried out when the machine is stopped.

As an embodiment of the invention, the upper surface of the tray is a trapezoidal boss with the same angle on both sides, and the sieve holes are opened at the level of the top of the boss.

Through the trapezoidal boss that the upper surface design with the column plate is the both sides angle is the same, because the connection between the surface of every two adjacent sieve meshes does not have the arc transition, when outside liquid flows through the column plate upper surface, the velocity of flow has the reduction of certain degree for gas-liquid two-phase can contact more fully, can stay some indissolvable or insoluble material in the liquid in the depressed part simultaneously, treats to concentrate the clearance when shutting down.

As an embodiment of the invention, the upper surface of the column plate is a right-angled trapezoidal boss with a slope on one side, and the sieve holes are opened at the level of the top of the boss.

Through the right trapezoid boss that has the slope for the unilateral upper surface design of column plate, when outside liquid flows through the column plate upper surface, there is one side of slope to make the liquid velocity of flow reduce for gas-liquid two-phase can contact more fully, and right angled one side influences greatly to the liquid velocity of flow, have great hindrance effect to liquid reverse flow, can prevent that bottom liquid from taking place the backward flow, can be with some indissolvable or insoluble material in the liquid stay in the depressed part simultaneously, treat to concentrate the clearance when shutting down.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the sieve pores are designed to have the size of the upper section smaller than that of the lower section, so that the liquid leakage is greatly reduced.

2. According to the invention, the lower surface of the tower plate is arranged to be arched, so that liquid in the lower plate flows to the bottom tip part along the arched surface under the action of gravity when splashed to the bottom of the upper plate along with gas, and then drops back to the lower plate, and cannot stay on the lower surface of the upper plate to cause pollution.

3. The invention can generate different impurity filtering effects by designing the upper surface of the tower plate into a special shape.

Drawings

FIG. 1 is a front elevational overall cross-sectional view of the present invention;

FIG. 2 is a top view of the retaining ring of the present invention;

FIG. 3 is a side view of the retaining ring of the present invention;

FIG. 4 is a top view of a waved tray according to the present invention;

FIG. 5 is a front cross-sectional view of a waved tray according to the present invention;

FIG. 6 is a top view of a tray having the same angle on both sides of a boss according to the present invention;

FIG. 7 is a front sectional view of a tray of the present invention in which the angles on both sides of the boss are the same;

FIG. 8 is a top view of a single-sided, right-angled tray of the boss of the present invention;

FIG. 9 is a front cross-sectional view of a right-angled tray on one side of a boss according to the present invention;

in the figure: the device comprises a main body 1, an air outlet 2, a reflux opening 3, a feed inlet 4, an air inlet 5, a discharge outlet 6, a fixed ring 7, a tower plate 8, a cylindrical boss 71, a supporting ring 72, a sieve hole 81, a fixed hole 82, a discharge hole 83, an overflow weir 84 and a downcomer 85.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 9, the present invention provides a technical solution: the utility model provides a take off light rectifying column, including main part 1, gas outlet 2 has been seted up at the top of main part 1, backward flow mouth 3 has been seted up on the right side upper portion of main part 1, feed inlet 4 has been seted up at the left side middle part of main part 1, air inlet 5 has been seted up to the right side lower part of main part 1, discharge gate 6 has been seted up to the bottom of main part 1, the fixed a plurality of solid fixed rings 7 that are provided with in inside of main part 1, the upper portion of solid fixed ring 7 is provided with column plate 8, gu fixed ring 7 is used for fixing column plate 8 on main part 1, column plate 8 is used for providing the contact place for the gas-liquid is double-phase.

Specifically, the outer ends of the channels of the gas outlet 2 at the top of the main body 1, the reflux opening 3 at the upper part of the right side, the feed inlet 4 at the middle part of the left side, the gas inlet 5 at the lower part of the right side and the discharge outlet 6 at the bottom are all connected with the flanges in a welding manner.

Through adopting above-mentioned technical scheme, at the passageway outer end welding flange of gas outlet 2, backward flow mouth 3, feed inlet 4, air inlet 5 and discharge gate 6, more have the flexibility for traditional welding, when accidents such as the pipeline that is connected with rectifying column main part 1 appears leaking and then need change, can make the installation more convenient with the dismantlement when guaranteeing sealed effect.

Specifically, the fixing ring 7 includes a supporting ring 72 and cylindrical bosses 71, the supporting ring 72 is a three-layer stepped annular structure, the supporting ring 72 is fixed inside the main body 1, and four cylindrical bosses 71 are uniformly distributed on the upper surface of the supporting ring 72 along the circumferential direction.

Specifically, column plate 8 is circular stair structure, and column plate 8's ladder is corresponding with the ladder of filler ring 72, and column plate 8 upper surface and vertical ladder face are opened has a plurality of sieve meshes 81, and four fixed orificess 82 have evenly been seted up along circumference to column plate 8's upper surface, and cylinder boss 71 inserts in fixed orificess 82, and the edge of fixed orificess 82 is provided with relief hole 83, and the lower extreme of relief hole 83 is provided with downcomer 85, and the upper portion edge of relief hole 83 is equipped with overflow weir 84.

By adopting the technical scheme, the supporting ring 72 is arranged to support the tower plate 8, the supporting ring 72 and the tower plate 8 are arranged to be of a three-layer ladder structure, different from a common planar tower plate, the tower plate 8 of the ladder structure can store more liquid and is beneficial to full contact between gas and liquid, more gas can be contacted with the liquid through the sieve holes 81 by arranging a plurality of sieve holes on the upper surface of the tower plate 8 and a vertical ladder surface, the cylindrical boss 71 is arranged on the supporting ring 72, the fixing hole 82 matched with the size of the cylindrical boss 71 is arranged on the tower plate 8, the tower plate 8 is only required to be placed on the fixing ring 7 during installation, the cylindrical boss 71 is inserted into the fixing hole 82, the liquid flowing down from the upper plate can be temporarily blocked by arranging the overflow weir 84, a certain liquid height is kept, and the liquid can be fully contacted with the gas passing through the sieve holes 81, by arranging the downcomer 85, the liquid in the upper plate can flow to the lower plate more stably, and the phenomenon of pollution caused by splashing everywhere is avoided.

Specifically, the lower surface of the tray 8 is provided with an arch structure.

Through adopting above-mentioned technical scheme, set up the lower surface of column plate 8 into the arch, when the liquid of lower plate splashes the bottom of upper plate along with gas, can flow to the bottom tip along the arch surface under the action of gravity, and then drip back to the lower plate, can not stop and cause the pollution at the upper plate lower surface.

Specifically, the size of the upper section of the sieve hole 81 is smaller than the size of the lower section.

Through adopting above-mentioned technical scheme, be less than the size of lower cross-section with sieve mesh 81 design into last cross sectional dimension, the liquid of upper surface is difficult for leaking into the hypoplastron through sieve mesh 81, and easily know according to the venturi effect, when restricted flow when the cross section that overflows through reducing, the phenomenon that the velocity of flow increases appears in the fluid, its velocity of flow with overflow the cross section and be inversely proportional, so when gas passes through sieve mesh 81, sieve mesh 81 can produce the effect that increases the velocity of flow to gas for liquid is difficult for leaking to the hypoplastron more.

Specifically, the inner surface of the main body 1 and the outer surface of the tower plate 8 are coated with an anti-corrosion coating.

By adopting the technical scheme, the inner surface of the main body 1 and the outer surface of the tower plate 8 are coated with the anti-corrosion coating, so that the working surfaces of the tower plate 8 and the main body 1 can be well protected, and the service life of the equipment is effectively prolonged.

Specifically, the upper surface of the column plate 8 is wavy, and the sieve holes 81 are formed in the convex portions of the upper surface.

By adopting the technical scheme, the upper surface of the tower plate 8 is designed to be wave-shaped, the two sides of the sieve holes 81 are same in shape, and the outer surface of the tower plate has radian, so that the influence of the whole tower plate on the flow velocity of external liquid is low, but as the highest point and the lowest point of the upper surface have a certain height difference, part of insoluble or insoluble solid matters in the liquid can be left in the concave part in the process of flowing through the liquid, and concentrated cleaning is carried out when the machine is stopped.

The working principle is as follows: feeding is carried out from a feeding hole 4, liquid in the feeding and liquid from an upper tower section descend along the tower under the action of gravity, vapor in the feeding and vapor from a lower tower section ascend along the tower and sequentially pass through the sieve holes 81 of each layer of tower plate 8 from bottom to top, under the action of an overflow weir 84, the upper surface of each layer of tower plate 8 can keep a liquid layer with a certain depth, gas is dispersed into the liquid layer through the tower plates 8, gas-liquid two phases are in countercurrent contact for mass transfer, volatile components in the liquid phase enter a gas phase, nonvolatile components in the gas phase are transferred into the liquid phase, the size of the upper section of the sieve holes 81 is smaller than that of the lower section, the generation of a liquid leakage phenomenon is greatly reduced, the lower surface of the tower plates 8 is arched, when the liquid of a lower plate splashes to the bottom of the upper plate along with the gas, the liquid flows to the tip part of the bottom end along the arched surface under the action of gravity, and then drops back to the lower plate, and cannot stay on the lower surface of the upper plate to cause pollution, when the upper surface of the column plate 8 is designed into different shapes, different impurity filtering effects can be generated, the product at the gas outlet 2 is a high-purity volatile component, and the product at the discharge port 6 at the bottom of the column is a high-purity nonvolatile component.

Example 2:

Specifically, the upper surface of the tray 8 is a trapezoidal boss with the same angles on both sides, and the sieve holes 81 are opened at the level of the top of the boss.

Through the trapezoidal boss that designs the upper surface of column plate 8 for both sides angle is the same, because the connection between the surface of every two adjacent sieve meshes 81 does not have the arc transition, when outside liquid flows through column plate 81 upper surface, the velocity of flow has the reduction of certain degree for gas-liquid two-phase can contact more fully, can leave some indissolvable or insoluble material in the liquid in the depressed part simultaneously, treats to concentrate the clearance when shutting down.

Example 3:

Specifically, the upper surface of the column plate 8 is a right-angled trapezoidal boss with a slope on one side, and the sieve holes 81 are arranged at the level of the top of the boss.

Through the right trapezoid boss that has the slope for the unilateral design of the upper surface with column plate 8, when outside liquid flows through column plate 8 upper surface, there is one side of slope to make the liquid velocity of flow reduce, make gas-liquid two-phase can contact more fully, and right-angled one side influences liquid velocity of flow great, have great hindrance effect to liquid reverse flow, can prevent that bottom liquid from taking place the backward flow, can stay some indissolvable or insoluble material in the liquid in the depressed part simultaneously, treat to concentrate the clearance when shutting down.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A light component removal rectifying tower comprises a main body (1) and is characterized in that: the gas outlet (2) is formed in the top of the main body (1), the backflow port (3) is formed in the upper portion of the right side of the main body (1), the feed inlet (4) is formed in the middle of the left side of the main body (1), the gas inlet (5) is formed in the lower portion of the right side of the main body (1), the discharge port (6) is formed in the bottom of the main body (1), a plurality of fixing rings (7) are fixedly arranged inside the main body (1), the tower plate (8) is arranged on the upper portion of each fixing ring (7), each fixing ring (7) is used for fixing the tower plate (8) on the main body, and the tower plate (8) is used for providing a contact place for gas and liquid phases.

2. A light ends removal rectification column as claimed in claim 1, wherein: the outer ends of the gas outlet (2) at the top of the main body (1), the return opening (3) at the upper part of the right side, the feed inlet (4) at the middle part of the left side, the gas inlet (5) at the lower part of the right side and the channel of the discharge opening (6) at the bottom are all connected with the flange in a welding way.

3. A light ends removal rectification column as claimed in claim 1, wherein: the fixing ring (7) comprises a supporting ring (72) and cylindrical bosses (71), the supporting ring (72) is of a three-layer stepped annular structure, the supporting ring (72) is fixed inside the main body (1), and the upper surface of the supporting ring (72) is uniformly provided with four cylindrical bosses (71) along the circumferential direction.

4. A light ends removal rectification column as claimed in claim 3, wherein: column plate (8) are circular stair structure, the ladder of column plate (8) with the ladder of filler ring (72) is corresponding, it has a plurality of sieve meshes (81) to open on column plate (8) upper surface and the vertical ladder face, four fixed orificess (82) have evenly been seted up along circumference to the upper surface of column plate (8), cylinder boss (71) insert in fixed orificess (82), the edge of fixed orificess (82) is provided with relief hole (83), and the lower extreme of relief hole (83) is provided with downcomer (85), and the upper portion edge of relief hole is equipped with overflow weir (84).

5. A light ends removal rectification column as claimed in claim 1, wherein: the lower surface of the tower plate (8) is of an arch structure.

6. The light component removal rectification column as claimed in claim 4, wherein: the size of the upper section of the sieve hole (81) is smaller than that of the lower section.

7. The light component removal rectification column as claimed in claim 4, wherein: the inner surface of the main body (1) and the outer surface of the tower plate (8) are coated with anti-corrosion coatings.

8. The light component removal rectification column as claimed in claim 4, wherein: the upper surface of the tower plate (8) is wavy, and the sieve holes (81) are formed in the convex parts of the wavy surface.

9. The light component removal rectification column as claimed in claim 4, wherein: the upper surface of the tower plate (8) is a trapezoidal boss with the same angles at two sides, and the sieve holes (81) are arranged at the level of the top of the boss.

10. The light component removal rectification column as claimed in claim 4, wherein: the upper surface of column plate (8) is the right trapezoid boss that has the slope of unilateral, sieve mesh (81) are seted up at the top level of boss.