CN201949671U

CN201949671U - Falling film type molecular still

Info

Publication number: CN201949671U
Application number: CN201120002365XU
Authority: CN
Inventors: 赵俊岩; 孔令旺; 师振霆; 魏新江
Original assignee: JIAOZUO XINZHIYUAN TECHNOLOGY Co Ltd
Current assignee: JIAOZUO XINZHIYUAN TECHNOLOGY Co Ltd
Priority date: 2011-01-06
Filing date: 2011-01-06
Publication date: 2011-08-31
Anticipated expiration: 2021-01-06

Abstract

The utility model provides a falling film type molecular still which comprises a material feed chamber, working chambers and a distillation residue outlet. A plurality of working chambers are provided, which is composed of liquid distributors, heating chambers, condensers and vapor-liquid separating chambers. The material feed chamber is arranged at the top end of the falling film type molecular still and communicated with the first layer of working chamber; in the first layer of working chamber, the liquid distributor is arranged at the top end of the working chamber, the lower part of the liquid distributor is communicated with the heating chamber, a heating jacket is arranged on the outer wall of the heating chamber, the lower part of the heating chamber is communicated with the vapor-liquid separating chamber, and the material outlet is arranged at the lower end of the vapor-liquid separating chamber; the condenser is arranged in the working chamber, the upper part of the condenser is positioned in the heating chamber, the lower part thereof is positioned in the vapor-liquid separating chamber, the middle-lower part of the condenser, i.e., the part in the heating chamber is communicated with a vacuum pipeline, and the lower part of the condenser is communicated with a distillation residue outlet pipeline; the lower end of the vapor-liquid separating chamber of the undermost working chamber is connected with the distillation residue outlet. The falling film type molecular still has the advantages that the evaporation rate of the mixed liquid can be improved, the evaporation efficiency is good, and the product yield is high.

Description

A kind of falling film type molecular still

Technical field

This practicality relates to a kind of falling film type molecular still, is used for the distillation of molecule under the vacuum state.

Technical background

Molecular clock is a type of vacuum distillation system, the vacuum distillation system generally is divided into decompression distillation, vacuum distillation, high vacuum distillation, short-path distillation etc., when industrialized unit moves, when generally remaining on pressure between 100Pa～1Pa, be referred to as high vacuum distillation, the falling film type molecular clock belongs to a kind of of high vacuum distillation, the characteristics of existing falling film type molecular still are that mixed liquor is from the upper entrance charging, through liquid distribution trough mixed liquor is flowed downward equably along the tower wall, form film, after liquid film was heated, the molecule of being overflowed by liquid phase entered gas phase, and radially moves inward, volatile substances moves towards the inner condenser face and is condensed, steam the thing outlet along flowing under the cryosurface, its gas molecule in space of volatile matter does not reach cryosurface and returns liquid phase, and reaches the gas-liquid two-phase balance.

But the defective of this molecular still is that the mixing liquid film is thicker, the content of operation product does not often reach predetermined requirement, under the certain situation of condenser diameter, the evaporation efficiency of solution is near constant, in order to improve the evaporation efficiency of solution, simple dependence adds condenser length and is difficult to prove effective, and its evaporation rate is low, evaporation efficiency is poor, product yield is low.

The utility model content

In order to overcome the defective that above-mentioned prior art exists, the utility model provides a kind of falling film type molecular still, and evaporation rate, the evaporation efficiency that this falling film type molecular still improves mixed liquor is good, product yield is high.

To achieve these goals, the technical solution of the utility model is: a kind of falling film type molecular still, comprise feed space, operating room, the outlet of steaming excess of mixed material, described operating room is a plurality of, and the operating room is made of liquid distribution trough, heating clamber, condenser, vapor-liquid separation chamber.The top of falling film type molecular still is a feed space, and be communicated with the ground floor operating room, in the ground floor operating room, the top of operating room is provided with gas-liquid distributor, be communicated with heating clamber down, the outer wall of heating clamber is provided with heating jacket, inserts the input channel of heat medium outside the lower end of heating jacket, inserts the output channel of heat medium outside the upper end; The bottom of heating clamber is communicated with vapour liquid separator, and the lower end of vapour liquid separator is provided with material outlet; Condenser is set in the operating room, and the top of condenser is positioned at heating clamber, and it is indoor that the bottom is positioned at vapor-liquid separation, the condenser middle and lower part, is communicated with vacuum pipe in the part of heating clamber, and following connection steams the thing outlet conduit; The lower end of the vapour liquid separator of a bottom operating room connects steams the excess outlet.

The beneficial effects of the utility model are: evaporation rate height, the evaporation efficiency that improves mixed liquor is good, product yield is high.

Description of drawings

Fig. 1 is the structural representation of falling film type molecular still of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and concrete embodiment.

As shown in Figure 1, falling film type molecular still of the present utility model comprises feed space 13, operating room 4, the steaming excess outlet 12 of mixed material, described operating room 4 is a plurality of, and operating room 4 is made of liquid distribution trough 3, heating clamber 14, condenser 2, vapor-liquid separation chamber 15.The top of falling film type molecular still is a feed space 13, and is communicated with ground floor operating room 4, the input channel 5 of feed space 13 external mixed materials; In the ground floor operating room, the top of operating room 4 is provided with gas-liquid distributor 3, is communicated with heating clamber 14 down, and the outer wall of heating clamber 14 is provided with heating jacket 1, insert the input channel 7 of heat medium outside the lower end of heating jacket 1, insert the output channel 8 of heat medium outside the upper end; The bottom of heating clamber 14 is communicated with vapor-liquid separation Room 15, and the lower end of vapor-liquid separation chamber 15 is provided with material outlet 11; 4 are provided with condenser 2 in the operating room, and the top of condenser 2 is positioned at heating clamber 14, and the bottom is positioned at vapor-liquid separation chamber 15, condenser 2 middle and lower parts, are communicated with vacuum pipe 6 in the part of heating clamber, and following connection steams thing outlet conduit 9; The lower end of the vapour liquid separator of a bottom operating room connects steams excess outlet 12.

Claims

1. falling film type molecular still, the feed space that comprises mixed material, the operating room, the outlet of steaming excess, it is characterized in that: described operating room is a plurality of, the operating room is by liquid distribution trough, heating clamber, condenser, vapor-liquid separation chamber constitutes, the top of falling film type molecular still is a feed space, and be communicated with the ground floor operating room, in the ground floor operating room, the top of operating room is provided with gas-liquid distributor, be communicated with heating clamber down, the outer wall of heating clamber is provided with heating jacket, inserts the input channel of heat medium outside the lower end of heating jacket, inserts the output channel of heat medium outside the upper end; The bottom of heating clamber is communicated with vapour liquid separator, and the lower end of vapour liquid separator is provided with material outlet; Condenser is set in the operating room, and the top of condenser is positioned at heating clamber, and it is indoor that the bottom is positioned at vapor-liquid separation, the condenser middle and lower part, is communicated with vacuum pipe in the part of heating clamber, and following connection steams the thing outlet conduit; The lower end of the vapour liquid separator of a bottom operating room connects steams the excess outlet.