CN212576269U

CN212576269U - A ethoxylation cauldron for polyether polyol is synthetic

Info

Publication number: CN212576269U
Application number: CN202020431288.9U
Authority: CN
Inventors: 周玉莹; 王贵海; 叶光; 郭子良
Original assignee: Jilin Oxiranchem New Material Co ltd
Current assignee: Jilin Oxiranchem New Material Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-02-23
Anticipated expiration: 2030-03-30

Abstract

The utility model relates to an ethoxylation cauldron for polyether polyol is synthetic, including the kettle cover, the cauldron body, intelligent control ware, manometer, rabbling mechanism, the kettle cover is located the cauldron body directly over and through bolt and its fixed connection, intelligent control ware is installed in the right side of kettle cover, manometer fixed connection is in the left side of kettle cover, and it draws the pressure end through the kettle cover and switches on with the internal portion of cauldron, rabbling mechanism and kettle cover fixed connection, the external side of cauldron are provided with electric heater unit and insulation material, and the internal portion of cauldron is equipped with condenser tube, the utility model discloses can the gentle cauldron of full-automatic data collection, control kettle press, feed rate to make data more reliable, the reaction is safer, and is easy and simple to handle, stops the raw materials and leaks, and fundamentally has improved polyether polyol synthesis ethoxylation's security and data accuracy.

Description

A ethoxylation cauldron for polyether polyol is synthetic

Technical Field

The utility model relates to a reation kettle technical field, especially an ethoxylation cauldron for polyether polyol is synthetic.

Background

The polyether polyol is a terminal hydroxyl oligomer which is widely applied and is prepared by the reaction of ethylene oxide and an organic compound containing active hydrogen, the ring-opening addition reaction is one of ethoxylation reactions, the ethoxylation reaction has strong heat release, the pressure of the synthesized polyether polyol is between 0.5 and 0.7MPa, on one hand, the condition of untimely heat transfer or untimely sealing exists, the operation danger is increased, and the product quality is unstable; on the other hand, ethylene oxide is a flammable, explosive and toxic high-risk chemical, the safety requirement on a reaction device is strict, at present, more than 300 common ethoxylation reaction kettles are used, wherein a semi-batch gas-liquid mixing stirring reaction kettle is most widely applied, although the process is mature and the operation is simple, the automation degree is low, the safety is poor, the product quality needs to be improved, and the reliability of collected data is low.

Therefore, the ethoxylation kettle for synthesizing polyether polyol needs to be provided, the safety of ethoxylation can be ensured, the raw material leakage phenomenon is avoided, and the safety and the data accuracy of the ethoxylation reaction for synthesizing polyether polyol are fundamentally improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for synthetic ethoxylation cauldron of polyether polyol to solve the not enough that exists among the prior art.

In order to achieve the above purpose, the following technical scheme is provided:

the utility model provides an ethoxylation cauldron for polyether polyol is synthetic, the structure includes the kettle cover, the cauldron body, intelligent control ware, manometer, rabbling mechanism, the kettle cover is located the cauldron body directly over and through bolt and its fixed connection, the intelligent control ware is installed in the right side of kettle cover, manometer fixed connection is in the left side of kettle cover, and it draws the pressure end through the kettle cover and switch on with the internal portion of cauldron, rabbling mechanism and kettle cover fixed connection, and its top-down includes in proper order for motor, strong magnetic coupling agitator, (mixing) shaft, stirring rake group includes stirring rake one, stirring rake two, the stirring rake is one in the middle part of the cauldron body, the stirring rake is two in the bottom of the cauldron body, the (mixing) shaft runs through stirring rake one, stirring rake two in proper order.

Preferably, cooling water pipes are arranged in the kettle body, the cooling water pipes are distributed in a bow shape and are fixedly connected to the inner wall of the kettle body, and the head end and the tail end of each cooling water pipe extend out from the upper part of the kettle body.

Preferably, an electric heating device is arranged outside the kettle body, a heat insulation material is arranged outside the electric heating device and is surrounded by the heat insulation material, and the electric heating device and the heat insulation material can fall down from the bottom of the kettle body.

Preferably, the stirring shaft is a mechanical flexible shaft.

Preferably, a thermocouple is further arranged in the kettle body, the upper portion of the thermocouple is fixedly connected with the kettle cover, and the output end of the thermocouple is connected with the intelligent controller.

Preferably, a material feeding pipe is arranged in the kettle body, the bottom end of the material feeding pipe stretches into the bottom in the kettle body, and the top end of the material feeding pipe stretches out of the kettle cover and is provided with a stop valve.

The utility model has the advantages that:

1. the utility model discloses set up intelligent control ware, but the reliability of data has been improved to the gentle cauldron pressure of full-automatic data collection, control cauldron, stirring speed.

2. The utility model discloses be equipped with heating function and cooling function to manometer and thermocouple have been installed, in time feedback pressure and temperature data, can carry out the technological parameter adjustment according to the data condition, have improved ethoxylation's security.

3. The utility model discloses a kettle cover and cauldron body coupling are inseparable, and are easy and simple to handle, stop the raw materials leakage phenomenon.

4. The utility model discloses an rabbling mechanism adopts advanced flexible axle magnetic coupling mechanical stirring device, has 110 ~ 748 Ncm's high moment of torsion, long service life, can be used to the synthetic reaction of various high viscosities.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the installation position of the cooling water pipe of the present invention;

FIG. 3 is a schematic view of the process flow of the present invention;

the reference symbols shown in the figures are: the method comprises the following steps of 1-a kettle cover, 2-a kettle body, 3-an intelligent controller, 4-a pressure gauge, 5-a motor, 6-a strong magnetic coupling stirrer, 7-a stirring shaft, 8-a first stirring paddle, 9-a second stirring paddle, 10-a cooling water pipe, 11-an electric heating device, 12-a heat insulation material, 13-a thermocouple, 14-a material feeding pipe and 15-a stop valve.

Detailed Description

The following describes the present design in detail with reference to the accompanying drawings.

As shown in fig. 1-2, an ethoxylation reaction kettle for polyether polyol synthesis, the structure includes kettle cover 1, the kettle body 2, intelligent control ware 3, manometer 4, rabbling mechanism, wherein kettle cover 1 is located directly over the kettle body 2 and through bolt and its fixed connection, intelligent control ware 3 is installed in the right side of kettle cover 1, manometer 4 fixed connection is in the left side of kettle cover 1, and its induced pressure end passes through kettle cover 1 and switches on with kettle body 2 is inside, wherein rabbling mechanism and kettle cover 1 fixed connection, and its top-down includes in proper order for motor 5, strong magnetic coupling agitator 6, (mixing) shaft 7, the stirring rake group includes stirring rake one 8, stirring rake two 9, stirring rake one 8 is located the middle part of kettle body 2, stirring rake two 9 is located the bottom of kettle body 2, stirring shaft 7 runs through stirring rake one 8 in proper order, stirring rake two 9.

Wherein, the cauldron body 2 is inside to be equipped with condenser tube 10, and condenser tube 10 is the distribution of bow font and fixed connection to the inner wall of cauldron body 2, and its head and the tail both ends are visited out by cauldron body 2 upper portion.

Wherein, the outside of the kettle body 2 is provided with an electric heating device 11, the outside of the electric heating device 11 is provided with a heat insulation material 12, and the heat insulation material 12 surrounds the electric heating device 11, and the electric heating device 11 and the heat insulation material 12 can be fallen down from the bottom of the kettle body 2.

Wherein, the stirring shaft 7 is a mechanical flexible shaft.

Wherein, still be equipped with thermocouple 13 in the cauldron body 2, the upper portion and the kettle cover 1 fixed connection of thermocouple 13, and the output of thermocouple 13 links to each other with intelligent control ware 3.

Wherein, be equipped with in the cauldron body 2 and walk material pipe 14, walk the bottom of material pipe 14 and stretch into cauldron body 2 bottom, its top is followed kettle cover 1 and is stretched out and install stop valve 15.

Wherein, alarm system has in the intelligent control ware 3, and the unusual quick start warning of taking place reaction can in time cool down and remove electric heater unit 11 and insulation material 12 to the interior material of cauldron, reaches rapid cooling's purpose.

Examples

As shown in fig. 1-2, the overall structure is connected, firstly, the stirring shaft 7 is fixedly connected with the strong magnetic coupling stirrer 6, the output end of the motor 5 is fixedly connected with the strong magnetic coupling stirrer 7, the strong magnetic coupling stirrer 7 is fixedly connected with the kettle cover 1, the first stirring paddle 8 and the second stirring paddle 9 are connected to the stirring shaft 7, the pressure gauge 4 and the intelligent controller 3 are fixedly connected, the thermocouple 13 is fixedly connected to the kettle cover 1, the transmission end of the thermocouple 13 is connected with the intelligent controller 3, the material feeding pipe 14 penetrates through the kettle cover 1 and is fixed, the kettle cover 1 is fixedly connected with the kettle body 2 through bolts, the cooling water pipe 10 is arranged on the inner wall of the kettle body 2 and is fixedly connected, and finally, the electric heating device 11 and the heat insulation material 12 are sequentially sleeved outside the kettle body 2, and the overall structure is connected.

As shown in FIG. 3, a schematic process flow diagram of polyether polyol is shown, in the actual use process, the addition amount of the initiator, the usage amount of the catalyst and the total feeding amount of EO are calculated according to the target product, firstly, the temperature rise process is carried out, EO is not added in the process, the temperature in the kettle is stabilized at 160 ℃ through the electric heating device 11 and the circulating cooling water, and N is supplemented from the material feeding pipe 14₂The method comprises the steps of pressurizing and conveying EO into a reaction kettle, controlling the kettle pressure to be 0.6MPa, carrying out an initiation reaction on an initiator and EO under the action of a catalyst, continuously adding EO to ensure that the EO, the initiator and an initiated molecular chain are continuously subjected to an addition reaction, starting a stirring mechanism after feeding of the EO is finished, rotating and stirring a stirring paddle I8 and a stirring paddle II 9, continuously stirring and aging the synthesized polyether polyol for 20-40 min, cooling to 60-80 ℃ through a cooling water pipe 10, discharging and weighing, and detecting and analyzing the synthesized polyether polyol, wherein the EO is conveyed to the reaction kettle under the action of a catalyst, and the synthesized polyether polyol is detected and analyzed, whereinThe intelligent controller 3 can automatically collect data and control the temperature and pressure of the kettle and the feeding speed, so that the data is more reliable and the reaction is safer; the kettle cover 1 is tightly connected with the kettle body 2, so that the phenomenon of raw material leakage is avoided; the stirring mechanism adopts the combination of a strong magnetic coupling stirrer 6 and a mechanical flexible shaft, and is simple and convenient to operate; the safety and the data accuracy of the ethoxylation reaction of polyether polyol synthesis are improved fundamentally, and the production efficiency is improved.

Claims

1. An ethoxylation reaction kettle for polyether polyol synthesis is characterized by comprising a kettle cover, a kettle body, an intelligent controller, a pressure gauge and a stirring mechanism, wherein the kettle cover is positioned right above the kettle body and is fixedly connected with the kettle body through bolts, the intelligent controller is installed on the right side of the kettle cover, the pressure gauge is fixedly connected to the left side of the kettle cover, a pressure leading end of the pressure gauge passes through the kettle cover and is communicated with the interior of the kettle body, a cooling water pipe is arranged in the kettle body, the cooling water pipe is distributed in a bow shape and is fixedly connected to the inner wall of the kettle body, the head end and the tail end of the cooling water pipe are extended out from the upper part of the kettle body, a material running pipe is arranged in the kettle body, the bottom end of the material running pipe is extended into the bottom in the kettle body, the top end of the material running pipe is extended out from the kettle cover and is provided with a stop valve, an electric heating device is arranged outside, electric heater unit can follow cauldron body bottom and fade with insulation material, the internal thermocouple that still is equipped with of cauldron, the upper portion and the kettle cover fixed connection of thermocouple, and the output of thermocouple links to each other with intelligent control ware, rabbling mechanism and kettle cover fixed connection, and its top-down include in proper order for motor, strong magnetic coupling agitator, (mixing) shaft, stirring rake group is including stirring rake one, stirring rake two, the stirring rake is one in the middle part of the cauldron body, the stirring rake is two in the bottom of the cauldron body, the (mixing) shaft runs through stirring rake one in proper order, stirring rake two, the (mixing) shaft is mechanical flexible axle.