WO2011088763A1

WO2011088763A1 - Self-cleaning reactor for high viscosity stream

Info

Publication number: WO2011088763A1
Application number: PCT/CN2011/070195
Authority: WO
Inventors: 严旭明
Original assignee: 扬州惠通化工技术有限公司
Priority date: 2010-01-22
Filing date: 2011-01-12
Publication date: 2011-07-28
Also published as: CN101745361A; CN101745361B

Abstract

A self-cleaning reactor for high viscosity stream in the field of polyester production apparatus comprises a housing (4). The housing (4) is a horizontal cylinder, both ends of which are closed. A gas evacuation outlet (10) is arranged on the housing (4) and connected with the inner cavity thereof. A material inlet (3) is arranged at one end of the top of the housing (4), and a material outlet (15) is arranged at the other end of the bottom of the housing (4). A rotatable rolling drum (8) is arranged in the inner cavity of the housing (4) and extends from the bottom of the material inlet (3) to the top of the material outlet (15). External propeller blades (6) are installed around the external circumference of the rolling drum (8) and adapted to the internal wall of the housing (4). A central shaft (9) is coaxially arranged at the center of the rolling drum (8). Internal propeller blades (7) are fixedly installed outside of the central shaft (9) and adapted to the inner wall of the rolling drum (8). A plurality of through holes (5) is arranged on the surface of the rolling drum (8).

Description

High viscosity self-cleaning reactor

Technical field

The present invention relates to a production facility for the polyester industry, and more particularly to a reaction apparatus for use in a polycondensation reaction.

Background technique

In the existing polyester production, as the polycondensation reaction proceeds, the viscosity of the material gradually increases, and the high viscosity material hinders the rapid escape of the reaction by-products, delays the progress of the reaction, and requires the material to form a large under vacuum. The surface area of the membrane, so that the reaction by-products can escape smoothly from the material, and the reaction can proceed better. In order to continue the reaction, at present, a reactor is adopted, the structure mainly comprises a casing, the top of the casing is provided with a feed inlet and a vacuum suction port, and the bottom of the casing is provided with a discharge port, and the casing is located at the feed. There are one or more pairs of relatively rotating press rolls under the mouth, leaving a gap between the press rolls, the material enters from the feed port, passes through the gap between the rotating press rolls, and is continuously evaporated, and finally discharged. The mouth leaves the device. The disadvantage is that the film forming efficiency of the pressure roller is low, and when the viscosity of the material is large, it is easy to be accumulated and blocked in the casing, so that the working efficiency of the device is lowered; the film is relatively rotated by the double pressure roller, and the power consumption is high, and the processing capability is high. small.

Summary of the invention

The present invention provides a technical solution for a high-viscosity self-cleaning reactor in view of the deficiencies of the prior art, and aims to solve the problems of poor film forming effect and low work efficiency in the prior art.

In order to solve the above technical problem, the technical solution of the present invention is as follows: a high-viscosity self-cleaning reactor, comprising a casing, the casing is provided with a vacuum suction port communicating with the inner cavity thereof, and the top of the casing is provided with a feeding port, and the bottom of the casing The utility model is provided with a discharge port, wherein the casing is a horizontally arranged cylinder closed at both ends, the feeding port is arranged at one end of the top of the casing, and the discharging port is arranged at the other end of the bottom of the casing, and the casing is provided in the inner cavity There is a rotatable drum extending from below the feed port to above the discharge port. The outer circumference of the drum is provided with an outer propeller blade adapted to the inner wall of the casing. The center of the drum is coaxially arranged with a central shaft, and the central shaft is fixed externally. An inner propulsion blade is provided which is adapted to the inner wall of the drum, and the roller surface is provided with a plurality of through holes.

When the invention is used, the vacuum pumping port is connected to the vacuum pump, and the gas escaping during the reaction of the material can be continuously taken away, the central shaft and the drum are rotated, the material enters from the feeding port, and some materials are fed from the outer propelling blade. One end of the mouth moves toward one end of the discharge port, and some materials pass through the through hole to enter the drum. Under the action of the inner propulsion blade, the material can move toward the discharge port or can advance toward the feed port, depending on the central axis. In the above process, the material is propelled and agitated by the propelling blade, the enthusiasm of the evaporation surface increases, and the reaction by-products are quickly extracted from the vacuum suction port, and the polycondensation reaction of the material can be further carried out, and the material after the reaction will eventually Leave the unit from the spout. The device is small in volume, large in processing capacity and low in energy consumption, and can be used in the production of polyesters such as PET, PEN, PBT, PTT, etc. The invention is particularly suitable for processing high viscosity materials.

The outer propulsion blade is a spiral blade, and the inner propulsion blade may also be a spiral blade. The spiral blade described above may also be a propeller blade. When it is working, it can make the material fully agitate and evaporate quickly.

In order to ensure that the structure of the device is simple and compact, the drum shafts disposed at both ends of the drum are supported on the casing via the outer bearing, and both ends of the central shaft are supported by the inner bearing in the drum shaft. In order to further ensure that the power arrangement is reasonable, the input end of the drum shaft and the input end of the center shaft are respectively disposed at both ends of the casing.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

Among them, 1, 12 pulleys, 2, 11 drum shafts, 3 feed ports, 4 shells, 5 through holes, 6 outer propeller blades, 7 inner propeller blades, 8 rollers, 9 center shafts, 10 vacuum suction ports, 13 inner bearings, 14 outer bearings, 15 discharge ports.

detailed description

As shown in FIG. 1 , it is a high-viscosity self-cleaning reactor, and its structure mainly comprises a casing 4 which is a cylinder, which is horizontally arranged and closed at both ends, and the casing 4 is provided with a cavity communicating with the inner cavity thereof. The vacuum suction port 10 is provided with a feed port 3 at the top of the casing 4, the feed port 3 is disposed at one end of the top of the casing 4, and a discharge port 15 is provided at the bottom of the casing 4, and the discharge port 15 is disposed at the casing At the other end of the bottom of the casing 4, a rotatable drum 8 is disposed in the inner cavity of the casing 4. The

drum shafts

2, 11 at both ends of the drum 8 are supported on the casing 4 through the outer bearing 14, and the drum 8 is continuously from below the inlet port 3. Extending above the discharge port 15, the outer circumference of the drum 8 is provided with an outer propulsion blade 6 adapted to the inner wall of the casing 4, and the outer propulsion blade 6 is a spiral blade. The center of the drum 8 is coaxially disposed with a central shaft 9 and two central shafts 9 The inner end bearing 13 is supported in the

drum shaft

2, 11 and the inner shaft 9 is fixedly provided with an inner propelling blade 7 adapted to the inner wall of the drum 8. The inner propelling blade 7 is also a spiral blade, and the roller surface is provided with a plurality of through holes. 5; the input end of the

drum shaft

2, 11 and the input end of the central shaft 9 are respectively disposed at two ends of the casing 4, and can be input through the pulleys 1, 12 provided at both ends Power.

During operation, vacuum is drawn through the vacuum suction port 10, the power is input through the pulleys 1, 12, the drum 8 and the central shaft 9 are rotated, and the two can rotate in the same direction, or can be reversely rotated, the viscosity of the material can be seen, and in the reactor The time required for the reaction is determined to determine the rotational speed difference between the drum 8 and the central shaft 9. The material entering from the inlet port 3 will continuously flow through the through hole 5 inside and outside the drum 8, and the outer propeller blade 6 and the inner propeller blade 7 are externally propelled. Under the joint action, the position and the agitation are increased, the surface positivity is increased, and the reaction by-products are fully escaped, so that the polymerization reaction is more thorough.

Claims

The utility model relates to a high-viscosity self-cleaning reactor, which comprises a casing, and a vacuum suction port communicating with the inner cavity thereof is arranged on the casing, a feeding inlet is arranged on the top of the casing, and a discharge opening is arranged at the bottom of the casing, and the utility model is characterized in that: The housing is a horizontally disposed cylinder closed at both ends, the feeding opening is arranged at one end of the top of the housing, the discharging opening is arranged at the other end of the bottom of the housing, and a rotatable drum is arranged in the inner cavity of the housing. The drum extends from below the feed port to the top of the discharge port, and the outer circumference of the drum is provided with an outer propeller blade which is matched with the inner wall of the casing. The center of the drum is coaxially arranged with a central shaft, and the central shaft is fixed externally to fit the inner wall of the drum. The inner propeller blade is provided with a plurality of through holes on the surface of the drum.
The high viscosity self-cleaning reactor of claim 1 wherein said outer propulsion blades are helical blades.
The high viscosity self-cleaning reactor of claim 1 wherein said inner propulsion blades are helical blades.
The high-viscosity self-cleaning reactor according to any one of claims 1 to 3, characterized in that the drum shaft provided at both ends of the drum is supported on the casing via an outer bearing, and both ends of the central shaft are supported by the inner bearing. Inside the roller shaft.
The high viscosity self-cleaning reactor according to claim 4, wherein the input end of the drum shaft and the input end of the center shaft are disposed at both ends of the casing.