CN213253075U

CN213253075U - Refining tower top reflux device

Info

Publication number: CN213253075U
Application number: CN202021967869.0U
Authority: CN
Inventors: 吴雷雷; 彭永文; 刘福彬; 马启俊; 张春辉
Original assignee: Jiangsu Sipai New Energy Technology Co Ltd
Current assignee: Jiangsu Sipai New Energy Technology Co Ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-05-25
Anticipated expiration: 2030-09-10

Abstract

The utility model relates to a refining tower top reflux unit, including the refining tower, the refining tower is provided with row's material pipe through blast pipe intercommunication heat exchanger's intake pipe, heat exchanger other end intercommunication, arranges material pipe and reservoir intercommunication setting, and reservoir downside fixed mounting has the reflux ratio controller, and the feed liquor pipe of reservoir bottom inner chamber through infusion pipeline intercommunication reflux ratio controller, the discharge pipe of reflux ratio controller divide into two the tunnel, sets up with the refining tower intercommunication all the way, another way and product jar intercommunication setting. The top of the liquid storage tank is communicated with a negative pressure pipe, and the auxiliary gas is discharged through the exhaust hole and the induced draft pipe, so that the doped gas in the liquid is reduced; the output shaft of motor rotates and drives the hob rotation when driving rotary rod pivoted, and the supplementary row of expecting the material pipe is arranged, avoids some materials to separate out the crystal after the condensation and blocks up row material pipe.

Description

Refining tower top reflux device

Technical Field

The utility model relates to a refined top of tower reflux unit technical field, concretely relates to refined top of tower reflux unit.

Background

The general principle of the rectification process is that feed liquid is added from the middle part of the tower, and the tower section above the feed inlet further enriches the volatile components in the rising steam, and is called as a rectification section; the section of the column below the feed opening, which extracts the volatile components from the descending liquid, is referred to as the stripping section. The reflux device of the refining tower provides cold fluid on the tower plate, gas-liquid phases are in reverse contact on the tower plate, heavy components in ascending gas are condensed, light components in descending liquid are evaporated by heat absorption, and the repeated condensation and evaporation effects further increase the product separation precision. The ratio of the amount of liquid refluxed into the column at the top of the column to the amount of product at the top of the column is called the reflux ratio, and the size of the reflux ratio affects the separation effect and the energy consumption of the rectification operation.

Rectification is distinguished from distillation in that rectification has a "reflux", whereas distillation does not. The reflux comprises liquid phase reflux at the top of the tower and gas phase reflux caused by partial vaporization at the bottom of the tower. The reflux is the necessary condition for the continuous rectification process by the contact mass transfer of vapor and liquid. If no liquid phase reflux exists at the top of the tower or no steam reflux is generated by a reboiler at the bottom of the tower, the gas-liquid mass transfer on the tower plate lacks one side of interaction, and the separation function of the tower plate is lost. Therefore, the plate-by-plate descending of reflux and the plate-by-plate ascending of steam are necessary conditions for achieving rectification. The existing reflux device contains a large amount of gas in reflux liquid in the reflux process, which affects the operation of a reflux ratio controller and influences products.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the above-mentioned problem among the prior art, provide refined top of tower reflux unit.

The utility model relates to a refining tower top reflux device, including the refining tower, the refining tower top intercommunication is provided with the blast pipe, and the top of the tower of refining tower is fixed with the heat exchanger, heat exchanger one end intercommunication is provided with the intake pipe, the other end intercommunication is provided with the row material pipe, intake pipe and blast pipe intercommunication set up, row material pipe and reservoir intercommunication set up, reservoir fixed mounting is at the outer wall of refining tower, and reservoir downside fixed mounting has the reflux ratio controller, the inner chamber of reservoir bottom portion communicates the feed liquor pipe of reflux ratio controller through the infusion pipeline, the discharge pipe of reflux ratio controller divide into two the tunnel, and one way sets up with the refining tower intercommunication, another way sets up with the product jar intercommunication; arrange and rotate in the material pipe and be provided with the hob, reservoir top lateral wall intercommunication is provided with the negative pressure pipe.

Furthermore, a heat exchange layer is arranged on the outer wall of the heat exchanger, a cavity is formed between the heat exchange layer and the outer wall of the heat exchanger, a water inlet pipe is communicated with the bottom of the outer wall of the heat exchange layer, a water drain pipe is communicated with the top of the outer wall of the heat exchange layer, and a flow control valve is communicated with the water inlet pipe.

Further, coaxial air entraining pipe that is provided with in the negative pressure pipe, be connected between air entraining pipe and the negative pressure pipe and be provided with the annular plate, rotate in the air entraining pipe and be provided with the rotary rod, rotary rod bottom circumference evenly is provided with the induced fan, the annular evenly is provided with a plurality of exhaust holes on the annular plate.

Further, down fixed mounting has driving gear and transfer gear in proper order on the rotary rod top from last, hob one end is run through row material pipe lateral wall, and fixed mounting has the bevel gear, the bevel gear sets up with the driving gear meshing, the reservoir outer wall has the motor through mounting bracket fixed mounting, the output shaft fixed connection action wheel of motor, it is provided with the conveyer belt to be connected between action wheel and the transfer gear.

Further, a one-way valve is arranged on a discharge pipe communicated between the reflux ratio controller and the refining tower, and the one-way valve controls the material to flow into the refining tower only from the reflux ratio controller.

Compared with the prior art, the utility model has the advantages of as follows:

1. the utility model discloses reservoir top intercommunication is provided with the negative pressure pipe, and the coaxial bleed pipe that is provided with in the negative pressure pipe, driving motor drive the rotary rod and rotate, and the rotary rod drives the induced air fan and rotates, and auxiliary gas passes through exhaust hole and induced air pipe discharge, and it is gaseous to dope in the reduction liquid.

2. The utility model discloses rotate in arranging the material pipe and be provided with the hob, the output shaft of motor rotates and drives the hob when driving rotary rod pivoted and rotates, and supplementary row material pipe is arranged and is expected, avoids some materials to appear crystal blocking behind the condensation and arranges the material pipe.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a reflux unit at the top of a refining tower according to the present invention;

FIG. 2 is a schematic sectional view of a discharge pipe according to the present invention;

fig. 3 is a schematic cross-sectional view of the negative pressure tube of the present invention;

fig. 4 is a schematic cross-sectional view of the heat exchange layer of the present invention.

The reference numbers are as follows:

1-refining tower, 101-exhaust pipe, 2-heat exchanger, 201-air inlet pipe, 202-discharge pipe, 203-heat exchange layer, 204-water inlet pipe, 205-water outlet pipe, 206-flow control valve, 3-liquid storage tank, 301-liquid conveying pipe, 302-negative pressure pipe, 303-air guide pipe, 4-reflux ratio controller, 5-product tank, 6-screw rod, 7-motor, 8-annular plate, 801-exhaust hole, 9-rotating rod, 901-air guide fan, 10-driving gear, 11-bevel gear, 12-transmission wheel, 13-driving wheel, 14-transmission belt and 15-one-way valve.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-4, a refining tower top reflux device comprises a refining tower 1, an exhaust pipe 101 is communicated with the top of the refining tower 1, a heat exchanger 2 is fixedly installed on the top of the refining tower 1, an air inlet pipe 201 is communicated with one end of the heat exchanger 2, a material discharge pipe 202 is communicated with the other end of the heat exchanger 2, a heat exchange layer 203 is arranged on the outer wall of the heat exchanger 2, a cavity is formed between the heat exchange layer 203 and the outer wall of the heat exchanger 2, a water inlet pipe 204 is communicated with the bottom of the outer wall of the heat exchange layer 203, a water outlet pipe 205 is communicated with the top of the outer wall of the heat exchange layer 203, a flow control valve 206 is communicated with the water inlet pipe 204 and the exhaust pipe 101, the material discharge pipe 202 is communicated with a liquid storage tank 3, the liquid storage tank 3 is fixedly installed on, the discharge pipe of the reflux ratio controller 4 is divided into two paths, one path is communicated with the refining tower 1, and the other path is communicated with the product tank 5; a one-way valve 15 is arranged on a discharge pipe communicated between the reflux ratio controller 4 and the refining tower 1, the one-way valve 15 controls the material to flow from the reflux ratio controller 4 to the refining tower 1 only, a spiral rod 6 is rotatably arranged in a discharge pipe 202, a negative pressure pipe 302 is communicated with the side wall of the top of the reservoir 3, a bleed pipe 303 is coaxially arranged in the negative pressure pipe 302, an annular plate 8 is connected between the bleed pipe 303 and the negative pressure pipe 302, a rotary rod 9 is rotatably arranged in the bleed pipe 303, a bleed fan 901 is uniformly arranged at the bottom end of the rotary rod 9 in the circumferential direction, a plurality of exhaust holes 801 are uniformly arranged on the annular plate 8 in the annular direction, a driving gear 10 and a transmission wheel 12 are sequentially and fixedly arranged at the top end of the rotary rod 9 from top to bottom, one end of the spiral rod 6 penetrates through the side wall of the discharge pipe 202 and is fixedly provided with, an output shaft of the motor 7 is fixedly connected with a driving wheel 13, and a conveying belt 14 is connected between the driving wheel 13 and the conveying wheel 12.

The working principle of the embodiment is as follows:

when in use, the proper reflux ratio is selected according to the actual situation and is controlled by the reflux ratio controller 4. Steam passes through during blast pipe 101 gets into heat exchanger 2, let in the condensate in inlet tube 204, the condensate flows in the cavity between heat exchanger 2 and heat transfer layer 203, carry out the heat transfer with steam, condense steam, the condensate after the heat transfer discharges through drain pipe 205, the vapour after the condensation is converted into the backwash liquid, contain gas in the backwash liquid, the recovery liquid is in the action of gravity to flowing to reservoir 3, driving motor 7, the output shaft of motor 7 rotates and drives rotary rod 9 and rotate, rotary rod 9 drives driving gear 10 and rotates, rotate with the bevel gear 11 that driving gear 10 meshing set up, and then hob 6 rotates, auxiliary material discharges from arranging material pipe 202. The rotating rod 9 rotates and drives the induced fan 901 to rotate, so that negative pressure is formed in the liquid storage tank 3, and the gas in the auxiliary reflux liquid is discharged out of the liquid storage tank 3. The reflux liquid flows into the reflux ratio controller 4 through the liquid storage pipeline 301, the reflux ratio controller 4 controls the proportion of reflux liquid refluxing into the refining tower 1, and a proper amount of reflux liquid is discharged into the refining tower 1 through a pipeline.

The reflux ratio controller 4 and the motor 7 are externally connected with a power supply, the control mode is common knowledge, and the detailed description is not repeated.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Refining tower top reflux unit, including refining tower (1), its characterized in that, refining tower (1) top intercommunication is provided with blast pipe (101), and the top of the tower fixed mounting of refining tower (1) has heat exchanger (2), heat exchanger (2) one end intercommunication is provided with intake pipe (201), other end intercommunication is provided with row material pipe (202), intake pipe (201) and blast pipe (101) intercommunication set up, arrange material pipe (202) and reservoir (3) intercommunication and set up, reservoir (3) fixed mounting is at the outer wall of refining tower (1), and reservoir (3) downside fixed mounting has reflux ratio controller (4), the feed liquor pipe of reservoir (3) bottom inner chamber through infusion pipeline (301) intercommunication reflux ratio controller (4), the discharge pipe of reflux ratio controller (4) divide into two tunnel, sets up with refining tower (1) intercommunication all the way, The other path is communicated with a product tank (5); arrange material pipe (202) in the rotation and be provided with hob (6), reservoir (3) top lateral wall intercommunication is provided with negative pressure pipe (302).

2. The refining overhead reflux unit of claim 1, wherein: the heat exchange layer (203) is arranged on the outer wall of the heat exchanger (2), a cavity is formed between the heat exchange layer (203) and the outer wall of the heat exchanger (2), a water inlet pipe (204) is communicated with the bottom of the outer wall of the heat exchange layer (203), a water drain pipe (205) is communicated with the top of the outer wall of the heat exchange layer (203), and a flow control valve (206) is communicated with the water inlet pipe (204).

3. The refining overhead reflux unit of claim 1, wherein: coaxial air entraining pipe (303) that is provided with in negative pressure pipe (302), it is provided with annular plate (8) to be connected between air entraining pipe (303) and negative pressure pipe (302), rotates in air entraining pipe (303) and is provided with rotary rod (9), rotary rod (9) bottom circumference evenly is provided with induced fan (901), the annular evenly is provided with a plurality of exhaust holes (801) on annular plate (8).

4. The refining overhead reflux unit of claim 3, wherein: rotary rod (9) top down fixed mounting in proper order has driving gear (10) and transfer gear (12) from last, hob (6) one end is run through row material pipe (202) lateral wall, and fixed mounting has bevel gear (11), bevel gear (11) and driving gear (10) meshing set up, reservoir (3) outer wall has motor (7) through mounting bracket fixed mounting, the output shaft fixed connection action wheel (13) of motor (7), it is provided with conveyer belt (14) to be connected between action wheel (13) and transfer gear (12).

5. The refining overhead reflux unit of claim 1, wherein: a one-way valve (15) is arranged on a discharge pipe communicated between the reflux ratio controller (4) and the refining tower (1), and the one-way valve (15) controls the material to flow into the refining tower (1) from the reflux ratio controller (4).