CN204865845U - A reation kettle that is used for that polyether glycol is synthetic to have a novel material device that spouts - Google Patents

Abstract

The utility model relates to a reation kettle specifically provides a reation kettle that is used for that polyether glycol is synthetic to have a novel material device that spouts, the reactor comprises a kettle, cauldron body top is provided with the motor, and the internal (mixing) shaft that is provided with of cauldron is provided with the stirring rake on, the output shaft and the agitator shaft connection of motor, the upper and lower portion that the cauldron was personally experienced sth. Part of the body is provided with the cocycle mouth and the mouth that circulates down, cocycle mouth, circulating pump and the mouth that circulates down loop through the tube coupling, the internal top of cauldron is provided with spouts the material device, it is the ring pipe to spout the material device, and the ring pipe communicates with the pipeline of cocycle mouth, the bottom of ring pipe is provided with a plurality of material holes of spouting. The utility model provides a reation kettle adopts the (mixing) shaft to stir to through spouting in the material hole spouts reation kettle with the material on the ring pipe, appear when making the material self -loopa to spout and expect atomization effect, the vapour -liquid misce bene has shortened reaction time, has improved product quality and production efficiency.

Description

Reactor with new spraying device for polyether polyol synthesis

technical field

The utility model relates to a reaction kettle, in particular to a reaction kettle with a novel material spraying device.

Background technique

There are two main synthesis techniques of polyether polyols: one is purely in a reaction kettle and synthesized by stirring. The other is that the reactor is also equipped with a material circulation pump to allow the material to circulate up and down the reactor.

Simply adopt stirring to synthesize polyether polyol, the reaction time is very long, the efficiency is low, and because the mixing effect is not good, the quality of the product is not good simultaneously. Using a stirring and external material circulation pump, the production efficiency is greatly improved, and the product quality is good at the same time. In the process of material circulation through the material external circulation pump, the form in which the material is injected into the reactor from the upper end of the reactor is very important.

At present, the commonly used methods are: the material is directly injected into the reaction kettle through a steel pipe; the other is to let the material spray into the reaction kettle through a professional and special nozzle. Polyether polyol reaction includes gas-liquid reaction and liquid-liquid reaction two processes. The two reaction processes react in equilibrium, which is the best for product quality. In the form of material external circulation pump circulation, the gas-liquid mixing effect is poor, and only the upper and lower mixing of materials can be achieved, so the synthesis time of polyether polyol is too long, the efficiency is too low, and the quality is not good at the same time. Through the professional and special nozzle form, the gas-liquid mixing effect is too good, so that most of the reaction is completed in the process of gas-liquid contact, which is not conducive to the control of product quality.

Utility model content

The purpose of this utility model is to overcome the defects of the above-mentioned prior art, to provide a new type of material spraying device for the synthesis of polyether polyols, which can balance the two-phase reaction of gas-liquid and liquid-liquid, and has a fast reaction rate and high product quality. reaction kettle.

For this reason, the utility model provides a kind of reactor that is used for the synthesis of polyether polyols and has the novel material injection device, comprises kettle body, and described kettle body top is provided with motor, and kettle body is provided with agitating shaft, and on agitating shaft A stirring paddle is provided, and the output shaft of the motor is connected with the stirring shaft; the upper and lower parts of the kettle body are provided with an upper circulation port and a lower circulation port, and a circulation pump is provided outside the kettle body, and the upper circulation port, circulation The pump and the lower circulation port are connected through pipelines in turn;

The upper part of the kettle body is provided with a material spraying device, and the material spraying device is an annular pipe, which communicates with the pipeline of the upper circulation port; the annular pipe is arranged horizontally, and the bottom of the annular pipe is provided with a plurality of material injection holes . The material enters the annular pipe through the circulating pump, and is sprayed into the reaction kettle through the spray hole at the bottom of the annular pipe, and the material presents the effect of spraying and atomizing. The gas-liquid mixing effect is good, the reaction time is shortened, and the production efficiency is improved.

The annular pipe is connected with the pipeline at the upper circulation port through a tee with a different diameter.

The spray holes are evenly distributed at the bottom of the annular pipe and are equal in size.

Beneficial effects of the utility model: the reactor provided by the utility model with a novel spraying device for polyether polyol synthesis uses a stirring shaft for stirring, and sprays the material into the reactor through the spray hole on the annular pipe In the reaction kettle, the material is sprayed and atomized when it is self-circulating, and the vapor and liquid are mixed evenly, which shortens the reaction time and improves product quality and production efficiency.

Description of drawings

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

Fig. 2 is a schematic diagram of the structure of the annular pipe.

Fig. 3 is a sectional view of the annular pipe.

Explanation of reference signs: 1. Kettle body; 2. Ring pipe; 3. Motor; 4. Upper circulation port; 5. Pipeline; 6. Circulation pump; Paddle; 10 injection holes; 11, the lower circulation port.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, further illustrate the utility model.

This embodiment provides a reaction kettle with a novel spraying device for polyether polyol synthesis, as shown in Figure 1, including a kettle body, a motor 3 is provided on the top of the kettle body 1, and a motor 3 is arranged in the kettle body 1. There is a stirring shaft 8, and the stirring shaft 8 is provided with a stirring paddle 9, and the output shaft of the motor 3 is connected with the stirring shaft 8; the upper and lower parts of the kettle body 1 are provided with an upper circulation port 4 and a lower circulation port 11. The outer side of the body 1 is provided with a circulation pump 6, and the upper circulation port 4, the circulation pump 6 and the lower circulation port 11 are sequentially connected through the pipeline 5; the motor 3 drives the stirring shaft 8 to rotate, and the stirring shaft 8 and the stirring paddle 9 together make the material Mix up and down.

The top in the kettle body 1 is provided with a spraying device, and the spraying device is an annular pipe 2, as shown in Figures 1, 2 and 3, the annular pipe 2 communicates with the pipeline of the upper circulation port 4; The pipe 2 is arranged horizontally, and the annular pipe 2 is connected to the pipeline at the upper circulation port 4 through a tee with a different diameter 4 . The bottom of the annular pipe 2 is provided with a plurality of injection holes 10, and the injection holes 10 are evenly distributed on the bottom of the annular pipe 2 and are equal in size, and are set according to the size of the reaction kettle and the circulation volume of the circulation pump. The material enters the annular pipe 2 through the circulation pump 6, and is sprayed into the reaction kettle through the spray hole 10 at the bottom of the annular pipe 2, and the material presents a spray atomization effect. The gas-liquid mixing effect is good, the reaction time is shortened, and the production efficiency is improved.

The above examples are only illustrations of the present utility model, and do not constitute a limitation to the protection scope of the present utility model. All designs identical or similar to the present utility model belong to the protection scope of the present invention.

Claims (3)

1. A reaction kettle with a new type of spraying device for polyether polyol synthesis, comprising a kettle body (1), characterized in that: the top of the kettle body (1) is provided with a motor (3), and the kettle body ( 1) A stirring shaft (8) is arranged inside, and a stirring paddle (9) is arranged on the stirring shaft (8), and the output shaft of the motor (3) is connected to the stirring shaft (8); the kettle body (1) The upper and lower parts are provided with an upper circulation port (4) and a lower circulation port (11), and the outer side of the kettle body (1) is provided with a circulation pump (6). The upper circulation port (4), circulation pump (6) and lower The circulation port (11) is connected through the pipeline (5) in turn; The upper part of the kettle body (1) is provided with a spraying device, and the spraying device is an annular pipe (2), and the annular pipe (2) communicates with the pipeline of the upper circulation port (4); the annular pipe ( 2) Horizontally arranged, the bottom of the annular pipe (2) is provided with a plurality of injection holes (10). 2. A reaction kettle with a new type of spraying device for polyether polyol synthesis as claimed in claim 1, characterized in that: the annular pipe (2) is connected to the upper circulation through a different diameter tee (7) Connect the pipe (5) at port (4). 3. A reaction kettle with a new spraying device for polyether polyol synthesis as claimed in claim 1, characterized in that: the spray holes (10) are evenly distributed at the bottom of the annular pipe (2) and are equal in size.