CN214861267U

CN214861267U - Rectifying tower

Info

Publication number: CN214861267U
Application number: CN202023275407.5U
Authority: CN
Inventors: 路万里; 孙艳荣; 徐天祥
Original assignee: Huamao Weiye Green Technology Co ltd
Current assignee: Huamao Weiye Green Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-11-26
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to the technical field of distillation towers, in particular to a rectifying tower; the added raw materials can be preheated, and the heat released in the condensation process of the gas-phase raw materials is fully utilized, so that the energy-saving and environment-friendly effects are achieved; including the rectifying column body, steam heating pipe, communicating pipe, the overflow pipe, preheating tower and condensing cylinder, this internal distillation chamber that is provided with of rectifying column, steam heating pipe spiral coil sets up in distillation chamber bottom, rectifying column body left end top-down is provided with steam muffler and steam intake pipe respectively, the output of steam intake pipe and the input intercommunication of steam heating pipe, steam muffler's input and steam heating pipe's output intercommunication, the input of communicating pipe stretches into to distillation intracavity upper portion, the preheating tower bottom is provided with the fluid-discharge tube, be provided with the flowing back valve on the fluid-discharge tube, the right-hand member bottom of preheating tower is provided with the fluid infusion pipe that communicates with preheating intracavity portion, be provided with the fluid infusion valve on the fluid infusion pipe.

Description

Rectifying tower

Technical Field

The utility model relates to a technical field of distillation column especially relates to a rectifying column.

Background

As is well known, a rectification column is a device for two-phase separation of liquids with different boiling points, which is widely used in the field of distillation columns; the publication (bulletin) No. CN209952260U discloses a high-efficiency tower tray of a methanol rectifying tower, which comprises a rectifying tower, wherein the top of the rectifying tower is provided with a gas phase outlet, the left side of the rectifying tower is fixedly connected with a feed inlet, the rectifying tower is internally provided with a rectifying tower tray, one side of the rectifying tower tray is fixedly connected with a liquid collecting plate, the top of the other end of the rectifying tower tray is fixedly connected with a liquid phase baffle, the bottom of the rectifying tower tray is communicated with a downcomer, the left side and the right side of the downcomer are both provided with vent holes, the vent holes are arranged on the liquid collecting plate, one side of the liquid phase baffle is fixedly connected with a downcomer, a downcomer hole is arranged between the downcomer plate and the liquid phase baffle, the top of the rectifying tower tray is uniformly and fixedly connected with a cap cover, the left end and the right end of the rectifying tower are fixedly connected on the inner wall of the rectifying tower through connecting arc-shaped plates, the bottom of the rectifying tower tray is uniformly provided with a circular filter screen, thereby saving steam and effectively reducing the energy consumption required by methanol production, the separation efficiency and the production efficiency are improved; in use, the raw materials are required to be continuously supplemented in the rectifying process, the temperature of the raw materials is low, the raw materials enter the rectifying tower and can influence the temperature in the tower body, and the heat energy released by the rectified gas-phase raw materials in the condensing process cannot be fully utilized, so that the energy waste is caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a can preheat adding the raw materials to carry out make full use of, more energy-concerving and environment-protective rectifying column to the heat of gaseous phase raw materials condensation process release.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the distillation tower comprises a distillation tower body, a steam heating pipe, a communicating pipe, an overflow pipe, a preheating tower and a condensation cylinder, wherein a distillation cavity is arranged in the distillation tower body, the steam heating pipe is spirally wound at the bottom of the distillation cavity, the left end of the distillation tower body is respectively provided with a steam return pipe and a steam inlet pipe from bottom to top, the output end of the steam inlet pipe is communicated with the input end of the steam heating pipe, the input end of the steam return pipe is communicated with the output end of the steam heating pipe, the input end of the communicating pipe extends into the upper part of the distillation cavity, the preheating tower is internally provided with the preheating cavity, the condensation cylinder is fixedly arranged in the preheating cavity, the output end of the communicating pipe extends into the condensation cylinder, the bottom of the preheating tower is provided with a liquid discharge pipe, the liquid discharge pipe is provided with a liquid discharge valve, and the output end of the liquid discharge pipe is communicated with the bottom of the condensation cylinder, the input end of the overflow pipe is communicated with the upper part of the preheating cavity, the output end of the overflow pipe extends into the lower part of the distillation cavity, the bottom of the right end of the preheating tower is provided with a liquid supplementing pipe communicated with the inside of the preheating cavity, and the liquid supplementing pipe is provided with a liquid supplementing valve.

Preferably, still include horn mouth form sleeve, force (forcing) pump and liquid homogenizing pipe, horn mouth form sleeve fixed mounting in on the bottom inner wall in distillation chamber, steam heating pipe set up in the horn mouth form sleeve, steam heating pipe and horn mouth form sleeve in close contact with, the input of force (forcing) pump stretches into to distillation intracavity bottom, liquid homogenizing pipe box is located telescopic well upper portion is described to the horn mouth, the output of force (forcing) pump with the input intercommunication of liquid homogenizing pipe, the last shower nozzle that is provided with multiunit circumference equipartition of liquid homogenizing pipe, the output of shower nozzle all faces horn mouth outer wall department on the horn mouth form sleeve.

Preferably, a plurality of groups of first annular heat exchange fins are uniformly distributed at the bottom of the outer wall of the bell-mouth-shaped sleeve.

Preferably, a spiral flow guide vane is arranged in the condensation cylinder.

Preferably, the outer wall of the condensation cylinder is provided with a plurality of groups of uniformly distributed second annular heat exchange fins from top to bottom.

Preferably, a flow control valve is arranged on the overflow pipe.

Preferably, a porous support plate is fixedly arranged at the middle upper part in the distillation cavity, and a packing layer is arranged on the porous support plate.

(III) advantageous effects

Compared with the prior art, the utility model provides a rectifying column possesses following beneficial effect: the rectifying tower is characterized in that a raw material solution is blown into a preheating cavity in a preheating tower and overflows to the bottom in a condensation cylinder through an overflow pipe, high-temperature steam is injected into a steam heating pipe through a steam inlet pipe, thereby heating the liquid raw material in the preheating cavity to boil, evaporating the low boiling point raw material and then entering the condensing cylinder through the communicating pipe, because the temperature of the liquid raw material in the preheating cavity is low, so that the vaporized gaseous raw material is condensed into liquid state and is discharged through a liquid discharge pipe, thereby achieving the purpose of rectification, the heat energy released in the vaporization process is absorbed by the liquid raw material to raise the temperature of the liquid raw material, thereby reducing the temperature difference between the liquid raw material and the liquid raw material in the distillation cavity, avoiding causing large fluctuation to the temperature in the distillation cavity, the supplemented raw materials can be preheated, and heat released in the condensation process of the gas-phase raw materials is fully utilized, so that the method is more energy-saving and environment-friendly.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the structure of the porous support plate of the present invention;

FIG. 3 is a schematic view of the structure of the liquid-homogenizing pipe of the present invention;

in the drawings, the reference numbers: 1. a rectifying column body; 2. a steam heating pipe; 3. a communicating pipe; 4. an overflow pipe; 5. a preheating tower; 6. a condensing cylinder; 7. a steam return pipe; 8. a steam inlet pipe; 9. A liquid discharge pipe; 10. a liquid supplementing pipe; 11. a bell-mouth sleeve; 12. a pressure pump; 13. a liquid equalizing pipe; 14. a first annular heat exchanger fin; 15. a spiral guide vane; 16. a second annular heat exchange fin; 17. A flow control valve; 18. a porous support plate; 19. a filler layer; 20. and (4) a spray head.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model discloses a rectifying tower, including rectifying tower body 1, steam heating pipe 2, communicating pipe 3, overflow pipe 4, preheating tower 5 and condenser 6, be provided with the distillation chamber in rectifying tower body 1, steam heating pipe 2 is spirally coiled and set up in the distillation chamber bottom, rectifying tower body 1 left end is provided with steam muffler 7 and steam inlet pipe 8 from bottom to top respectively, the output of steam inlet pipe 8 communicates with the input of steam heating pipe 2, the input of steam muffler 7 communicates with the output of steam heating pipe 2, the input of communicating pipe 3 stretches into distillation intracavity upper portion, be provided with the preheating chamber in preheating tower 5, condenser 6 is fixed mounting in preheating chamber, the output of communicating pipe 3 stretches into condenser 6, preheating tower 5 bottom is provided with fluid-discharge tube 9, be provided with the flowing-off valve on the fluid-discharge tube 9, the output end of the liquid discharge pipe 9 is communicated with the bottom of the condensation cylinder 6, the input end of the overflow pipe 4 is communicated with the upper part of the preheating cavity, the output end of the overflow pipe 4 extends into the lower part of the distillation cavity, the bottom of the right end of the preheating tower 5 is provided with a liquid supplementing pipe 10 communicated with the interior of the preheating cavity, and the liquid supplementing pipe 10 is provided with a liquid supplementing valve; the raw material solution is blown into a preheating cavity in a preheating tower 5 and overflows to the bottom in a condensation cylinder 6 through an overflow pipe 4, high-temperature steam is injected into a steam heating pipe 2 through a steam inlet pipe 8, thereby heating the liquid raw material in the preheating cavity to boil, leading the low boiling point raw material to enter the condensing cylinder 6 through the communicating pipe 3 after being vaporized, and because the temperature of the liquid raw material in the preheating cavity is low, so that the vaporized gaseous raw material is condensed into liquid state and is discharged through the liquid discharge pipe 9, thereby achieving the purpose of rectification, the heat energy released in the vaporization process is absorbed by the liquid raw material to raise the temperature of the liquid raw material, thereby reducing the temperature difference between the liquid raw material and the liquid raw material in the distillation cavity, avoiding causing large fluctuation to the temperature in the distillation cavity, the supplemented raw materials can be preheated, and heat released in the condensation process of the gas-phase raw materials is fully utilized, so that the method is more energy-saving and environment-friendly.

The utility model discloses a rectifying tower, still include horn mouth form sleeve 11, force (forcing) pump 12 and liquid homogenizing pipe 13, horn mouth form sleeve 11 fixed mounting is on the bottom inner wall in distillation chamber, steam heating pipe 2 sets up in horn mouth form sleeve 11, steam heating pipe 2 and horn mouth form sleeve 11 in close contact with, the input of force (forcing) pump 12 stretches into to the bottom in the distillation chamber, liquid homogenizing pipe 13 cover is located the well upper portion of horn mouth form sleeve 11, the output of force (forcing) pump 12 communicates with the input of liquid homogenizing pipe 13, be provided with multiunit circumference equipartition shower nozzle 20 on the liquid homogenizing pipe 13, the output of shower nozzle 20 all faces the horn mouth outer wall department on horn mouth form sleeve 11; by starting the pressure pump 12, the liquid raw material at the bottom of the distillation cavity can be pressurized and then injected into the liquid equalizing pipe 13, and is sprayed out at a high speed through the plurality of groups of spray heads 20, so that the liquid raw material sprayed out in a dispersing way is fully contacted with the outer wall of the bell-mouth-shaped sleeve 11, the heat transfer area is increased, the liquid raw material can be better heated, the vaporization of the low-boiling-point liquid raw material is facilitated, the heat energy utilization rate can be improved, and the vaporization time of the low-boiling-point liquid raw material is shortened; a plurality of groups of first annular heat exchange fins 14 which are uniformly distributed are arranged at the bottom of the outer wall of the bell-mouth-shaped sleeve 11; through the arrangement of the plurality of groups of first annular heat exchange fins 14, the heat exchange area can be increased, so that the heating time of the liquid raw material at the bottom of the distillation cavity is shortened; a spiral flow guide vane 15 is arranged in the condensation cylinder 6; the spiral guide vane 15 can prolong the stroke of the vaporized raw material from the condensation cylinder 6, so that the vaporized raw material can be fully condensed, and the condensation recovery efficiency is improved; a plurality of groups of second annular heat exchange fins 16 are uniformly distributed on the outer wall of the condensation cylinder 6 from top to bottom; through the arrangement of the plurality of groups of second annular heat exchange fins 16, the heat at the condensing cylinder 6 can be favorably transferred to the liquid raw material in the preheating cavity, so that the liquid raw material is fully heated from the preheating tower 5; the overflow pipe 4 is provided with a flow control valve 17; the flow control valve 17 is used for controlling the entering amount of the liquid raw material entering the distillation cavity and keeping the liquid level in the distillation cavity basically equal; a porous supporting plate 18 is fixedly arranged at the middle upper part in the distillation cavity, and a packing layer 19 is arranged on the porous supporting plate 18; by the arrangement of the packing layer 19, the liquid drop-shaped materials can be reduced to enter the condensation cylinder 6 through the communicating pipe 3, the entering of high-boiling-point liquid drops is reduced, and the purity of the distillate is ensured.

When in use, the raw material solution is blown into a preheating cavity in a preheating tower 5 and overflows to the bottom in a condensation cylinder 6 through an overflow pipe 4, high-temperature steam is injected into a steam heating pipe 2 through a steam inlet pipe 8, so that the liquid raw material in the preheating cavity is heated to boil, the low-boiling-point raw material is vaporized and enters the condensation cylinder 6 through a communicating pipe 3, the vaporized gaseous raw material is condensed into a liquid state due to the low temperature of the liquid raw material in the preheating cavity and is discharged through a liquid discharge pipe 9, the rectification purpose is achieved, the heat energy released in the vaporization process is absorbed by the liquid raw material, the temperature of the liquid raw material is raised, the temperature difference between the liquid raw material and the liquid raw material in a distillation cavity is reduced, the temperature in the distillation cavity is prevented from greatly fluctuating, the supplemented raw material can be preheated, and the heat released in the condensation process of the gas-phase raw material is fully utilized, the energy is saved and the environment is protected; by starting the pressure pump 12, the liquid raw material at the bottom of the distillation cavity can be pressurized and then injected into the liquid equalizing pipe 13, and is sprayed out at a high speed through the plurality of groups of spray heads 20, so that the liquid raw material sprayed out in a dispersing way is fully contacted with the outer wall of the bell-mouth-shaped sleeve 11, the heat transfer area is increased, the liquid raw material can be better heated, the vaporization of the low-boiling-point liquid raw material is facilitated, the heat energy utilization rate can be improved, and the vaporization time of the low-boiling-point liquid raw material is shortened; through the arrangement of the plurality of groups of first annular heat exchange fins 14, the heat exchange area can be increased, so that the heating time of the liquid raw material at the bottom of the distillation cavity is shortened; the spiral guide vane 15 can prolong the stroke of the vaporized raw material from the condensation cylinder 6, so that the vaporized raw material can be fully condensed, and the condensation recovery efficiency is improved; through the arrangement of the plurality of groups of second annular heat exchange fins 16, the heat at the condensing cylinder 6 can be favorably transferred to the liquid raw material in the preheating cavity, so that the liquid raw material is fully heated from the preheating tower 5; the flow control valve 17 is used for controlling the entering amount of the liquid raw material entering the distillation cavity and keeping the liquid level in the distillation cavity basically equal; by the arrangement of the packing layer 19, the liquid drop-shaped materials can be reduced to enter the condensation cylinder 6 through the communicating pipe 3, the entering of high-boiling-point liquid drops is reduced, and the purity of the distillate is ensured.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A rectifying tower is characterized by comprising a rectifying tower body (1), a steam heating pipe (2), a communicating pipe (3), an overflow pipe (4), a preheating tower (5) and a condensing cylinder (6), wherein a distillation cavity is arranged in the rectifying tower body (1), the steam heating pipe (2) is spirally wound at the bottom of the distillation cavity, a steam return pipe (7) and a steam inlet pipe (8) are respectively arranged at the left end of the rectifying tower body (1) from bottom to top, the output end of the steam inlet pipe (8) is communicated with the input end of the steam heating pipe (2), the input end of the steam return pipe (7) is communicated with the output end of the steam heating pipe (2), the input end of the communicating pipe (3) extends into the upper part in the distillation cavity, the preheating tower (5) is internally provided with the preheating cavity, the condensing cylinder (6) is fixedly arranged in the preheating cavity, the output end of the communicating pipe (3) stretches into the condensing cylinder (6), a liquid discharge pipe (9) is arranged at the bottom of the preheating tower (5), a liquid discharge valve is arranged on the liquid discharge pipe (9), the output end of the liquid discharge pipe (9) is communicated with the bottom of the condensing cylinder (6), the input end of the overflow pipe (4) is communicated with the upper portion of the preheating cavity, the output end of the overflow pipe (4) stretches into the lower portion of the distillation cavity, a liquid supplementing pipe (10) communicated with the inside of the preheating cavity is arranged at the bottom of the right end of the preheating tower (5), and the liquid supplementing valve is arranged on the liquid supplementing pipe (10).

2. A rectification column as claimed in claim 1, characterized by further comprising a bell-mouth-shaped sleeve (11), a pressure pump (12) and a liquid-homogenizing pipe (13), the bell mouth-shaped sleeve (11) is fixedly arranged on the inner wall of the bottom end of the distillation cavity, the steam heating pipe (2) is arranged in the bell mouth-shaped sleeve (11), the steam heating pipe (2) is tightly contacted with the bell mouth-shaped sleeve (11), the input end of the pressure pump (12) extends into the bottom of the distillation cavity, the liquid equalizing pipe (13) is sleeved at the middle upper part of the bell-mouth-shaped sleeve (11), the output end of the pressure pump (12) is communicated with the input end of the liquid equalizing pipe (13), a plurality of groups of circumferentially and uniformly distributed spray heads (20) are arranged on the liquid equalizing pipe (13), the output end of the spray head (20) faces to the outer wall of the bell mouth on the bell mouth-shaped sleeve (11).

3. A rectifying column according to claim 2, characterized in that the bottom of the outer wall of said flared sleeve (11) is provided with a plurality of groups of uniformly distributed first annular heat exchanger fins (14).

4. A rectifying column according to claim 3, characterized in that spiral guide vanes (15) are arranged in the condensation cylinder (6).

5. A rectifying tower according to claim 4, characterized in that the outer wall of the condensing cylinder (6) is provided with a plurality of groups of uniformly distributed second annular heat exchange fins (16) from top to bottom.

6. A rectification column as claimed in claim 5, characterized in that the overflow pipe (4) is provided with a flow control valve (17).

7. A rectifying column according to claim 6, characterized in that a porous support plate (18) is fixedly arranged at the middle upper part in the distilling cavity, and a packing layer (19) is arranged on the porous support plate (18).