CN201558563U

CN201558563U - Novel distillation tower

Info

Publication number: CN201558563U
Application number: CN2009202475404U
Authority: CN
Inventors: 高景山; 齐慧敏; 王海波; 刘杰; 张英; 李欣
Original assignee: China Petroleum and Chemical Corp; Sinopec Fushun Research Institute of Petroleum and Petrochemicals
Current assignee: China Petroleum and Chemical Corp; Sinopec Fushun Research Institute of Petroleum and Petrochemicals
Priority date: 2009-10-27
Filing date: 2009-10-27
Publication date: 2010-08-25
Anticipated expiration: 2019-10-27

Abstract

The invention relates to a distillation tower used for experiments, which comprises a distillation section, a stripping section, a condenser and a reboil heating kettle, wherein the reboil heating kettle comprises a kettle body, a gas communication pipe, a heater, a gasification chamber, a liquid communication pipe and a liquid level controller; the gasification chamber is in a tube shape and is separated from the kettle body, the bottom of the gasification chamber is communicated with the bottom of the kettle body via the liquid communication pipe, and the top of the gasification chamber is communicated with the top of the kettle body via the gas communication pipe. When the distillation tower is used, liquid in the kettle body enters the gasification chamber via the liquid communication pipe in multiple paths to generate circular flow, and the liquid does not have dead angle in the reboil heating kettle, so the heat transfer effect is enhanced, liquid bumping is avoided, and the heating time is shortened.

Description

A kind of novel distillation tower

Technical field

The utility model relates to the rectifying column in a kind of oil, the chemical engineering experiment chamber rectifying device.

Background technology

Distillation technology is the unit operations that is most widely used in the chemical field, though many advantages are arranged, also is simultaneously energy consumption and the higher part of investment in the industrial process, and in industries such as chemical industry, its energy consumption accounts for the over half of overall process total energy consumption.The energy consumption of distillation process mainly concentrates on the heater that boils again of rectifying column.And the heater that boils again in current experiments chamber or the small-sized rectifying device, because the restriction of condition, seldom adopt thermal siphon or Kettle formula reboiler, what adopt mostly is the mode of heating of electrical heating chuck or built-in coil pipe, the electrical heating chuck is owing to be subjected to the control of contact area, a large amount of processes that heat are difficult to satisfy the demand, and the efficiency of heating surface of built-in coil pipe is relatively poor, and simultaneously built-in coil pipe also occupies certain volume, when adopting above mode of heating, because heated liquid stays cool substantially, thermal conductivity factor is little, and it is inhomogeneous to be heated, and heat time heating time is long, be subjected to thermal material to be easy to generate bumping, insensitive to the change reaction of operating condition.

Summary of the invention

The purpose of this utility model be solve in the rectifying device of existing laboratory rectifying column boil again heater be heated inhomogeneous, material need heat time heating time long, be easy to generate problem such as bumping, a kind of novel rectifier unit is provided.

The utility model is realized by following technical scheme:

A kind of novel distillation tower, comprise rectifying section, stripping section, condenser and the heating kettle that boils again, it is characterized in that, the described heating kettle that boils again comprises kettle, air communicating pipe, heater, vaporizer, fluid connection pipe and fluid level controller, described vaporizer is a tubulose, separate with kettle, the bottom of vaporizer communicates with autoclave body bottom by the fluid connection pipe, and the top of vaporizer communicates with the kettle top by air communicating pipe.

Liquid level in the kettle is regulated control by fluid level controller.Be heated liquid and enter vaporizer via the fluid connection pipe, the heater via heating and gasifying is after air communicating pipe returns kettle.

Advantage of the present utility model is:

The heating kettle that boils again of this rectifying column has adopted split-type structural, vaporizer separates with kettle, liquid branch multichannel in the kettle enters vaporizer via the fluid connection pipe, liquid branch multichannel is produced to circulate, make liquid in the heating kettle that boils again, not have the dead angle, strengthen heat-transfer effect, avoided the liquid bumping, shortened heat time heating time.

Description of drawings

Fig. 1 is a structural representation of the present utility model

The 1-kettle; The 2-air communicating pipe; The 3-heater; The 4-vaporizer; 5-fluid connection pipe; The 6-fluid level controller; The 7-stripping section; The 8-rectifying section; The 9-condenser; The 10-heating kettle that boils again.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is elaborated:

In conjunction with Fig. 1, rectifying column of the present utility model comprises rectifying section 8, stripping section 7, condenser 9 and the heating kettle 10 that boils again.Rectifying section 8 and stripping section 7 have plate column or packed tower structure.The heating kettle 10 that boils again comprises kettle 1, air communicating pipe 2, heater 3, vaporizer 4, fluid connection pipe 5 and fluid level controller 6.Vaporizer 4 is a tubulose, separates with kettle 1, and the quantity of vaporizer 4 is generally 2～6, is uniformly distributed in a circumferential direction around the kettle 1.The bottom of vaporizer communicates with kettle 1 bottom by fluid connection pipe 5, and the top of vaporizer communicates with kettle 1 top by air communicating pipe 2, and the liquid level of liquid is regulated control by fluid level controller 6 in the kettle.Air communicating pipe is positioned at kettle top, is 30～60 degree elevations angle and communicates with kettle, is preferably the 45 degree elevations angle.

The liquid branch multichannel of kettle enters vaporizer via the fluid connection pipe, and the heater via heating and gasifying is after air communicating pipe returns kettle.

In conjunction with Fig. 1, the course of work of rectifying column of the present utility model is:

Material A to be separated enters the flash zone of rectifying column, flash distillation is gas phase and liquid phase two fluid streams, and gas phase rises and enters rectifying section 8, enters condenser 9 with the liquid contact separation that refluxes and by cat head, reflux through condenser condenses rear section liquid, remainder is as overhead product B extraction; The liquid phase of telling from flash zone enters stripping section 7 downwards with the liquid that refluxes from rectifying section, and refluxing with back flow of gas contact separation from the heating kettle 10 that boils again enters the heating kettle 10 that boils again at the bottom of the tower.

In the heating kettle 10 that boils again, in kettle 1 under the effect of density contrast of the hydrostatic head of liquid and the indoor two phase flow of gasification, produce motive force, the liquid that drives in the kettle 1 enters vaporizer 4 via fluid connection pipe 5, enter into liquid in the vaporizer along the up process of vaporizer by heater 3 heating and gasifyings, and turn back in the kettle 1 through air communicating pipe 2, bottom product C is extracted out by kettle 1 bottom, so far finishes one and reflux-heat-gasify-return the Natural Circulation process of rectifying column.In whole heating process, liquid is divided into multichannel and is in flow regime all the time, has strengthened heat-transfer effect, eliminates bumping factor and the dead angle of liquid in kettle, has shortened the heat time heating time of material.In heating process, can regulate the heating power of heater 3 immediately in addition, shorten the reaction time of heater according to the practical operation demand.

This utility model is characterised in that boil the again vaporizer 4 of heating kettle of Qi Tadi separates with kettle 1, by certain angle be uniformly distributed in kettle 1 around, the liquid that is refluxed by rectifying column stripping section 7 enters kettle 1, the liquid level of liquid is by fluid level controller 6 controls in the kettle 1, and the liquid of keeping in the kettle by adjusting tower still produced quantity remains on certain liquid level.

Claims

1. a novel distillation tower comprises rectifying section, stripping section, condenser and the heating kettle that boils again, it is characterized in that, the described heating kettle that boils again comprises kettle, air communicating pipe, heater, vaporizer, fluid connection pipe and fluid level controller; Described vaporizer is a tubulose, separates with kettle, and the bottom of vaporizer communicates with autoclave body bottom by the fluid connection pipe, and the top of vaporizer communicates with the kettle top by air communicating pipe.

2. rectifying column in accordance with claim is characterized in that the quantity of described vaporizer is 2～6, and vaporizer is uniformly distributed in around the kettle in a circumferential direction.

3. according to the described rectifying column of claim 1, it is characterized in that described rectifying section and stripping section have plate column or packed tower structure.

4. according to the described rectifying column of claim 1, it is characterized in that described air communicating pipe is positioned at kettle top, be 30～60 degree elevations angle and communicate with kettle.