CN220276327U - Rectifying column for chemical industry - Google Patents

Abstract

The utility model discloses a rectifying tower for chemical industry, which comprises a skirt and a tower body, wherein the tower body is arranged on the skirt, the tower body is provided with a feed inlet, a gas phase circulation port, a liquid phase circulation port, a reflux port and a gas phase outlet, the input end of a reboiler of the liquid phase circulation port is connected, the gas phase circulation port is connected with the output end of the reboiler, the gas phase outlet is connected with the input end of a condenser, the reflux port is connected with a reflux pipe, a gas-liquid contact device is arranged in the tower body and is used for fully contacting gas phase components and liquid phase components, the gas-liquid contact device comprises a tray and a liquid control mechanism, and the liquid control mechanism is arranged on the tray and is used for controlling the liquid flow on the tray.

Description

Rectifying column for chemical industry

Technical Field

The utility model belongs to the technical field of rectifying towers, and particularly relates to a rectifying tower for chemical industry.

Background

The rectifying tower is a tower type vapor-liquid contacting device for rectifying, and the principle is to utilize the different volatilities of the components in the mixture (i.e. the different vapor pressures of the components at the same temperature) to transfer the light components (low-boiling substances) in the liquid phase into the gas phase and the heavy components (high-boiling substances) in the gas phase into the liquid phase, so as to realize separation. The tray type rectifying tower is widely applied, and has the main structure that a plurality of trays are arranged in the tower body of the rectifying tower, so that liquid flows from top to bottom through each tray, and gas flows upwards from the bottom of the tower body, so that the gas contacts with the liquid, and the separation of light components and heavy components is completed.

The setting of column plate is usually divided into two modes, and one is that the column plate is arranged in the both sides of rectifying column in a staggered way for from top to bottom along the column plate flows in proper order by the liquid, and then increases the flow path of liquid, improves contact time and contact surface with gas, and then can improve the effect of separation, but this kind of mode vapour-liquid flow distribution is uneven, consequently can make vapour-liquid contact's effect not good, and then influences the effect of separation. The other mode is that a plurality of mesh type tower plates are sequentially overlapped in the rectifying tower, bubble caps are arranged at the meshes to enable gas to flow uniformly, meanwhile, liquid is accumulated on the tower plates to wait for contact with the gas, the gas flows upwards from the meshes and is uniformly dispersed under the action of the bubble caps and contacts with the liquid accumulated on the tower plates, and the method has good contact effect and good separation effect. However, after rectification is finished, liquid can accumulate on the tower tray, the liquid is not well cleaned, and the tower tray can be corroded after long-time retention, so that the working performance of the rectifying tower is affected.

Aiming at the problems, a rectifying tower for chemical industry is provided.

Disclosure of Invention

In order to solve the problems, the utility model provides a rectifying tower for chemical industry, which aims at solving the problems that after rectification is finished, liquid can be accumulated on a tower tray, cleaning is not easy, the tower tray can be corroded after long-time retention, and the working performance of the rectifying tower is affected.

The embodiment of the utility model is realized by the following technical scheme:

the utility model provides a rectifying column for chemical industry, includes skirt and tower body, the tower body is installed on the skirt, the tower body is provided with feed inlet, gaseous phase circulation mouth, liquid phase circulation mouth, backward flow mouth and gaseous phase export, liquid phase circulation mouth reboiler input is connected, gaseous phase circulation mouth is connected with the reboiler output, gaseous phase export is connected with the condenser input, backward flow mouth is connected with the back flow pipe, be provided with gas-liquid contact device in the tower body for make gaseous phase component and liquid phase component fully contact, gas-liquid contact device includes tray and liquid control mechanism, liquid control mechanism installs on the tray for liquid flow on the control tray.

In an embodiment of the utility model, the liquid control mechanism includes a first overflow pipe, a second overflow pipe and a connection section, one end of the connection section is connected with the first overflow pipe, the other end of the connection section is connected with the second overflow pipe, a liquid outlet is arranged at the connection position of the connection section and the first overflow pipe, the liquid outlet is communicated with the first overflow pipe, and an overflow port is arranged on the second overflow pipe.

In one embodiment of the utility model, the first overflow pipe and the second overflow pipe are respectively arranged on a tray, a plurality of air inlets are arranged on the tray, a bubble cap is arranged on the top surface of the tray, and the bubble cap is communicated with the air inlets.

In an embodiment of the utility model, the liquid control mechanism is provided with a lifting assembly for driving the liquid control mechanism to lift, the lifting assembly comprises a cylinder, a connecting rod, a lifting rod and a communicating vessel, the connecting rod is connected with the second overflow pipe, one end of the lifting rod is connected with the connecting rod, the other end of the lifting rod is connected with the communicating vessel, the cylinder is connected with the communicating vessel, and liquid or gas is filled in the communicating vessel.

In one embodiment of the utility model, the first overflow pipe and the second overflow pipe are provided with sealing elements, the sealing elements are in conical structures, the tray is provided with conical holes, the first overflow pipe and the second overflow pipe penetrate into the conical holes, and the sealing elements are clamped into the conical holes.

In an embodiment of the utility model, the bubble cap comprises an air inlet pipe, a top cover and a supporting rod, wherein the supporting rod is arranged on the air inlet pipe, the top cover is arranged on the supporting rod and is positioned above the air inlet pipe, and a plurality of gas outlets are arranged on the top cover.

In one embodiment of the utility model, a liquid spraying pipe is arranged in the tower body, and the feeding port and the reflux port are respectively connected with one liquid spraying pipe.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

1. according to the embodiment of the utility model, the gas-liquid contact device is arranged to fully contact the gas phase component and the liquid phase component, so that the rectification efficiency is improved; 2. through configuration lift subassembly for gas-liquid contacting device for after the rectification, the liquid on the tray can flow to the bottom of the tower body through first overflow pipe and second overflow pipe, realizes the recovery of liquid phase, avoids liquid to stay on the tray for a long time and corrodes the tray.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic front view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the structure of the gas-liquid contacting device;

FIG. 4 is a schematic cross-sectional view of a gas-liquid contacting device;

FIG. 5 is a view showing a state in which the first overflow pipe and the second overflow pipe move downward in the gas-liquid contacting apparatus;

fig. 6 is a schematic structural view of a blister.

Icon: 1-skirt, 2-tower, 3-gas phase outlet, 4-return, 5-feed inlet, 6-gas phase circulation, 7-liquid phase circulation, 8-thermometer, 11-manhole, 12-skirt inspection, 13-cylinder, 14-connector, 15-spray pipe, 16-tower tray, 17-first overflow pipe, 18-liquid outlet, 19-overflow port, 20-connection section, 21-bubble cap, 22-connection rod, 23-lifter, 24-air inlet pipe, 25-support bar, 26-top cover, 27-gas outlet, 28-sealing piece, 29-taper hole, 30-second overflow pipe, 31-air inlet.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the azimuth or positional relationship indicated by the terms "inner", "outer", etc. appears to be based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "configured," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-6, the present embodiment provides a rectifying tower for chemical industry.

In this embodiment, the rectifying tower comprises a skirt 1 and a tower body 2, and the tower body 2 is installed on the skirt 1. A feed port 5, a gas phase circulation port 6, a liquid phase circulation port 7, a reflux port 4 and a gas phase outlet 3. The liquid phase circulation port 7 is connected with the input end of the reboiler, and the liquid to be rectified enters the reboiler through the liquid phase circulation port 7 to be heated and evaporated. The gas phase circulation port 6 is connected with the output end of the reboiler, steam generated by heating enters the tower body 2 from the gas phase circulation port 6, a gas distributor is arranged in the tower body 2 and is connected with the gas phase circulation port 6, so that the steam can be uniformly distributed in the tower body 2. The feed inlet 5 is located the middle part of tower body 2, and the liquid that needs rectification is added by feed inlet 5, is provided with hydrojet 15 in tower body 2, and hydrojet 15 is connected with feed inlet 5, makes the liquid spray in tower body 2 through hydrojet 15, and the installation height of feed inlet 5 is higher than gas phase circulation mouth 6. The gas phase outlet 3 is positioned at the top of the tower body 2, the gas phase outlet 3 is connected with the input end of the condenser, the gas phase is divided into reflux liquid and required liquid through the condensing pipe, the reflux liquid flows back to the tower body 2 through the reflux pipe, a liquid spraying pipe 15 is arranged in the tower body 2, the liquid spraying pipe 15 is connected with the reflux port 4, and the height of the reflux port 4 is higher than that of the feed port 5. A gas-liquid contacting device is arranged in the tower body 2, and the gas phase component and the liquid phase component are fully contacted through the gas-liquid contacting device.

In this embodiment, two gas-liquid contacting devices are provided, which are respectively installed below the shower pipes connected to the feed inlet 5 and the return inlet 4. The gas-liquid contacting device includes tray 16 and a liquid control mechanism. The trays 16 are provided in two, and the liquid control mechanism is connected to the two trays 16. The tray 16 is provided with a plurality of air inlets 31, the gas phase moves upwards from the air inlets 31, a bubble cap 21 is arranged on the tray 16, the bubble cap 21 is arranged on the top surface of the tray 16 and is communicated with the air inlets 31, and the gas phase is uniformly dispersed under the action of the bubble cap 21 after entering the air inlets 31. The liquid phase entering via feed port 5 and return port 4 will fall onto tray 16 and accumulate on tray 16 in contact with the gas phase.

In this embodiment, the liquid control mechanism includes a first downcomer 17 and a second downcomer 30, the first downcomer 17 and the second downcomer 30 being vertically disposed and extending through the tray 16. The first downcomer 17 is mounted on the tray 16 located above and the second downcomer 30 is mounted on the tray 16 located below. The height of the first and second downcomer 17, 30 is higher than the height of the tray 16, and when the liquid level on the tray 16 rises to the same height as the first and second downcomer 17, 30, the liquid will flow downwardly from the first and second downcomer 17, 30, maintaining a relatively constant height on the tray 16. The first overflow pipe 17 and the second overflow pipe 30 are connected through the connecting section 20, one end of the connecting section 20 is connected with the first overflow pipe 17, the other end is connected with the second overflow pipe 30, and the connecting section 20 is of a solid structure. The connection section 20 is connected to the first downcomer 17 at a location where a liquid outlet 18 is provided, from above the tray 16, liquid flowing into the first downcomer 17 will flow from the liquid outlet 18 to the tray 16 below. The second downcomer 30 is provided with a spillway 19, from which spillway 19 liquid on the tray 16 below will flow into the second downcomer 30. The liquid control mechanism is further configured with a lifting assembly by which the liquid control mechanism can be moved up and down.

In the present embodiment, the lifting assembly includes the air cylinder 13, the connecting rod 22, the lifting rod 23, and the communicating vessel 14. The connecting rod 22 is fixedly connected with a section of the second overflow pipe 30 positioned below the tray 16, one end of the lifting rod 23 is connected with the connecting rod 22, the other end of the lifting rod 23 is connected with the communicating vessel 14, the air cylinder 13 is connected with the communicating vessel 14, and communicating liquid is filled in the communicating vessel 14. The communicating vessel 14 penetrates through the rectifying tower, one end of the communicating vessel 14 is located outside the rectifying tower, and one end of the communicating vessel 14 is opened upwards. Sliding blocks are connected in the two ends of the communicating vessel 14 in a sliding way, the lifting rod 23 is fixedly connected with one sliding block, and a communicating liquid is filled between the two sliding blocks in the connecting vessel 14 which is connected with the other sliding block by the piston rod of the air cylinder 13. A conical hole 29 is provided in the middle of the tray 16, and sealing elements 28 are provided on the first overflow pipe 17 and the second overflow pipe 30, which sealing elements 28 are adapted to the conical hole 29, and the sealing elements 28 can be snapped into the conical hole 29, i.e. the first overflow pipe 17 and the second overflow pipe 30 penetrate into the conical hole 29. When the rectifying tower works, the sealing piece 28 is clamped into the conical hole 29, after rectifying is finished, liquid can be accumulated on the tower tray 16, the lifting assembly drives the first overflow pipe 17 and the second overflow pipe 30 to descend, the opening of the first overflow pipe 17 is flush with the top surface of the tower tray 16, the overflow opening 19 of the second overflow pipe 30 is flush with the top surface of the tower tray 16, and the accumulated liquid on the tower tray 16 can flow to the top of the tower body 2 through the first overflow pipe 17 and the second overflow pipe 30. When the tower body 2 works, the piston rod of the air cylinder 13 stretches out to push the communicating liquid to move, so that the lifting rod 23 is pushed to lift, the sealing piece 28 is clamped into the conical air, the opening height of the first overflow pipe 17 is higher than the top surface of the tray 16, the overflow opening 19 of the second overflow pipe 30 is higher than the top surface of the tray 16, and in this state, the liquid on the tray 16 can flow into the first overflow pipe 17 and the second overflow pipe 30 only after reaching a certain liquid level. When the rectification is finished, the air cylinder 13 is retracted, the lifting rod 23 is unsupported by the reflux of the communicating liquid, and the lifting rod moves downwards, so that the first overflow pipe 17 and the second overflow pipe 30 are driven to descend, at the moment, the opening of the first overflow pipe 17 is flush with the top surface of the tray 16, the overflow opening 19 of the second overflow pipe 30 is flush with the top surface of the tray 16, and the accumulated liquid on the tray 16 flows to the top of the tower body 2 through the first overflow pipe 17 and the second overflow pipe 30.

In this embodiment, the bubble cap 21 includes an air inlet pipe 24, a support rod 25 and a top cover 26, the air inlet pipe 24 is communicated with an air inlet hole 31, the support rod 25 is installed on the air inlet pipe 24, the top cover 26 is installed on the support rod 25, the top cover 26 covers the air inlet pipe 24, a plurality of gas outlets 27 are arranged on the bottom of the top cover 26, and the gas phase after passing through the bubble cap 21 is uniformly dispersed around and fully contacted with the liquid phase on the tray 16.

In this embodiment, a thermometer port 8, a pressure gauge port and a liquid level gauge port are provided on the tower body 2, and corresponding detection devices can be installed on the thermometer port 8, the pressure gauge port and the liquid level gauge port to monitor the working state in the tower body 2. Be provided with manhole 11 on tower body 2, the easy access tower body 2 is provided with skirt 1 inspection port on skirt 1, the easy access skirt 1.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The utility model provides a rectifying column for chemical industry, includes skirt and tower body, the tower body is installed on the skirt, the tower body is provided with feed inlet, gaseous phase circulation mouth, liquid phase circulation mouth, backward flow mouth and gaseous phase export, liquid phase circulation mouth reboiler input is connected, gaseous phase circulation mouth is connected with the reboiler output, gaseous phase export is connected with the condenser input, the backward flow mouth is connected with the back flow pipe, a serial communication port, be provided with gas-liquid contact device in the tower body for make gaseous phase component and liquid phase component fully contact, gas-liquid contact device includes tray and liquid control mechanism, liquid control mechanism installs on the tray for liquid flow on the control tray.

2. A rectifying column for chemical industry according to claim 1, characterized in that,

the liquid control mechanism comprises a first overflow pipe, a second overflow pipe and a connecting section, one end of the connecting section is connected with the first overflow pipe, the other end of the connecting section is connected with the second overflow pipe, a liquid outlet is formed in the joint of the connecting section and the first overflow pipe, the liquid outlet is communicated with the first overflow pipe, and an overflow port is formed in the second overflow pipe.

3. A rectifying column for chemical industry according to claim 2, characterized in that,

the first overflow pipe and the second overflow pipe are respectively arranged on a tray, a plurality of air inlets are arranged on the tray, a bubble cap is arranged on the top surface of the tray, and the bubble cap is communicated with the air inlets.

4. A rectifying column for chemical industry according to claim 3, characterized in that,

the liquid control mechanism is provided with a lifting assembly for driving the liquid control mechanism to lift, the lifting assembly comprises a cylinder, a connecting rod, a lifting rod and a communicating vessel, the connecting rod is connected with a second overflow pipe, one end of the lifting rod is connected with the connecting rod, the other end of the lifting rod is connected with the communicating vessel, the cylinder is connected with the communicating vessel, and liquid or gas is filled in the communicating vessel.

5. A rectifying column for chemical industry according to claim 4, characterized in that,

the tray is characterized in that sealing elements are arranged on the first overflow pipe and the second overflow pipe, the sealing elements are of conical structures, conical holes are formed in the tray, the first overflow pipe and the second overflow pipe penetrate into the conical holes, and the sealing elements are clamped into the conical holes.

6. A rectifying column for chemical industry according to claim 3, characterized in that,

the bubble cap comprises an air inlet pipe, a top cover and a supporting rod, wherein the supporting rod is arranged on the air inlet pipe, the top cover is arranged on the supporting rod and located above the air inlet pipe, and a plurality of gas outlets are formed in the top cover.

7. A rectifying column for chemical industry according to claim 1, characterized in that,

the tower body is internally provided with a liquid spraying pipe, and the feed inlet and the reflux inlet are respectively connected with one liquid spraying pipe.