Reaction device for producing polyether polyol

Abstract

The utility model discloses a reaction device for producing polyether polyol. The reaction device comprises a reaction kettle, a flow guide structure arranged in the reaction kettle, a stirrer assembly arranged in the reaction kettle, a material outlet formed in the bottom of the reaction kettle, a safety pressure relief device arranged at the top of the reaction kettle and an insulating layer arranged outside the reaction kettle; according to the polyether polyol reaction device disclosed by the invention, by improving the internal structure of the reaction kettle, the design of the heat exchanger, the stirrer assembly, the material inlet, the safety pressure relief device and the insulating layer, a more efficient and safer production process is realized, and the improvement on the structure is beneficial to improving the quality and the production efficiency of polyether polyol; meanwhile, the maintenance cost and the operation risk are reduced, the internal structural design is optimized, the material mixing efficiency is improved, the heat transfer is improved, and the equipment maintenance is simplified, so that the overall production performance and safety are improved.

Description

Technical Field

[0001] The invention belongs to the field of polyether polyol production equipment, and in particular relates to a reaction device for producing polyether polyol. Background Art

[0002] Existing polyether polyol reaction devices may have problems such as uneven material mixing, low heat transfer efficiency, and difficult equipment maintenance during the production process. These problems may lead to low production efficiency, unstable product quality, and safety hazards. Summary of the invention

[0003] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a reaction device for producing polyether polyols, the reaction device comprising a reactor, a flow guide structure arranged inside the reactor, an agitator assembly arranged inside the reactor, a material outlet arranged at the bottom of the reactor, a safety pressure relief device arranged at the top of the reactor, and an insulating layer arranged outside the reactor.

[0004] Based on the above technical solution, a reactor with an internal flow guide structure is provided, which is designed to promote uniform mixing of materials in the reactor, a heat exchanger integrated on the wall of the reactor is used to improve heat transfer efficiency and evenly distribute heat, a detachable agitator assembly is provided for easy cleaning and maintenance, a material inlet at the bottom of the reactor is provided, which is designed to reduce material deposition and blockage, a top safety pressure relief device is provided, which includes an automatic shut-off valve for quickly releasing pressure in the event of abnormal pressure, and an insulating layer on the outside of the reactor is provided to reduce heat loss and protect operators.

[0005] As an improvement of the utility model, the guide structure arranged inside the reactor includes a spiral guide plate, and the reactor guide plate is arranged on the inner wall of the reactor. A fixed plate is arranged at the bottom of the guide plate. The fixed plate is annular and the bottom is connected to the bottom of the reactor. The guide plate is arranged along the axis direction of the reactor and upward along the fixed plate.

[0006] Based on the above technical solution, the spiral guide vane is arranged in a ring shape inside the reactor as a whole, and it may not contact the inner wall of the reactor to enhance the circulation flow of materials. The spiral guide vane can accelerate the reaction speed of materials and improve production efficiency.

[0007] As an improvement of the utility model, the heat exchanger arranged inside the reactor includes a group of heat exchange pipes, the heat exchange pipes are tightly fitted to the wall of the reactor, and spiral heat exchange fins are arranged in the heat exchange pipes.

[0008] Based on the above technical solution, the heat exchange pipe is connected to the heat exchanger, and the heat exchange pipe fits tightly to the reactor wall to maximize the heat exchange area.

[0009] As an improvement of the utility model, the agitator assembly arranged inside the reaction kettle includes a central shaft and one or more replaceable agitating blades.

[0010] Based on the above technical solution, the replaceable stirring blade is screwed to the central shaft thread, which is easy to install and convenient to disassemble, replace and clean.

[0011] As an improvement of the utility model, the safety pressure relief device arranged on the top of the reactor includes a pressure sensor, and the pressure sensor is connected to the automatic closing valve.

[0012] Based on the above technical solution, the pressure value inside the reactor is monitored by a pressure sensor, and then the pressure is released by closing the valve.

[0013] As an improvement of the utility model, the insulating layer arranged outside the reactor is a high temperature resistant material layer, and the high temperature resistant material is made of conventional high temperature resistant material to improve thermal efficiency and protect the operating environment.

[0014] As an improvement of the utility model, the material inlet is designed to be conical.

[0015] Based on the above technical solution, the material inlet is designed to be conical to reduce the impact and deposition of the material when entering the reactor.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a polyether polyol reaction device with improved structure. The polyether polyol reaction device of the present invention realizes a more efficient and safer production process by improving the internal structure of the reactor, the heat exchanger design, the agitator assembly, the material inlet, the safety pressure relief device and the insulation layer. These structural improvements help to improve the quality and production efficiency of polyether polyols while reducing maintenance costs and operational risks. The device improves material mixing efficiency, improves heat transfer, simplifies equipment maintenance, and thus improves overall production performance and safety by optimizing the internal structure design. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the reaction device of the utility model;

[0018] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle.

[0019] List of illustration symbols: 1-reactor, 2-spiral guide vane, 3-fixed plate, 4-heat exchange pipe, 5-spiral heat exchange plate, 6-center axis, 7-stirring blade, 8-pressure sensor, 9-insulating layer, 10-material inlet, 11-material outlet. DETAILED DESCRIPTION

[0020] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0021] Example: Figure 1-2 As shown, this embodiment is a reaction device for producing polyether polyols, and the reaction device includes a reactor 1, a flow guide structure arranged inside the reactor 1, an agitator assembly arranged inside the reactor 1, a material outlet 11 arranged at the bottom of the reactor 1, a safety pressure relief device arranged at the top of the reactor 1, and an insulating layer 9 arranged outside the reactor 1. The reactor 1 with an internal flow guide structure is designed to promote uniform mixing of materials in the reactor 1, a heat exchanger integrated on the wall of the reactor 1 is used to improve the heat transfer efficiency and evenly distribute heat, a detachable agitator assembly is easy to clean and maintain, a material inlet 10 located at the bottom of the reactor 1 is designed to reduce material deposition and blockage, a top safety pressure relief device includes an automatic closing valve for quickly releasing pressure when the pressure is abnormal, and an insulating layer 9 outside the reactor 1 is used to reduce heat loss and protect operators.

[0022] As an improvement of this embodiment, the guide structure arranged inside the reactor 1 includes a spiral guide plate 2, the guide plate of the reactor 1 is arranged on the inner wall of the reactor 1, and a fixed disk 3 is arranged at the bottom of the guide plate. The guide plate and the fixed disk 3 are fixedly welded, the fixed disk 3 is annular, and the bottom is connected to the bottom of the reactor 1. The guide plate is arranged upward along the axis direction of the reactor 1 and along the fixed disk 3. The spiral guide plate 2 is arranged inside the reactor 1 in an annular shape as a whole, and it may not contact the inner wall of the reactor 1 to enhance the circulation of the material. The spiral guide plate can accelerate the reaction speed of the material and improve the production efficiency.

[0023] As an improvement of this embodiment, the heat exchanger disposed inside the reactor 1 includes a group of heat exchange pipes 4, which are closely attached to the wall of the reactor 1, and spiral heat exchange fins 5 are disposed inside the heat exchange pipes 4. The heat exchange pipes 4 are connected to the heat exchanger, which is a general device, and the heat exchange pipes 4 are closely attached to the wall of the reactor 1 to maximize the heat exchange area.

[0024] As an improvement of this embodiment, the agitator assembly disposed inside the reactor 1 includes a central shaft 6 and one or more replaceable agitator blades 7. The replaceable agitator blades 7 are screwed to the central shaft 6, which is convenient for installation, disassembly, replacement and cleaning.

[0025] As an improvement of this embodiment, the safety pressure relief device arranged on the top of the reactor 1 includes a pressure sensor 8, and the pressure sensor 8 is connected to the automatic closing valve. The pressure value inside the reactor 1 is monitored by the pressure sensor 8, and then the pressure is released through the closing valve.

[0026] As an improvement of this embodiment, the insulating layer 9 arranged outside the reactor 1 is a high temperature resistant material layer, and the high temperature resistant material is made of conventional high temperature resistant material to improve thermal efficiency and protect the operating environment.

[0027] As an improvement of this embodiment, the material inlet 10 is designed to be conical, so as to reduce the impact and deposition of the material when entering the reactor 1 .

[0028] It should be noted that the above content merely illustrates the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims

1. A reaction device for producing polyether polyols, characterized in that: The reaction device comprises a reaction kettle (1), a flow guide structure arranged inside the reaction kettle (1), an agitator assembly arranged inside the reaction kettle (1), a material outlet (11) arranged at the bottom of the reaction kettle (1), a safety pressure relief device arranged at the top of the reaction kettle (1), and an insulating layer (9) arranged outside the reaction kettle (1).

2. A reaction device for producing polyether polyols according to claim 1, characterized in that: The guide structure arranged inside the reactor (1) comprises a spiral guide plate (2), the guide plate of the reactor (1) being arranged on the inner wall of the reactor (1), a fixed plate (3) being arranged at the bottom of the guide plate, and the guide plate being arranged upwards along the axis direction of the reactor (1) and along the fixed plate (3).

3. A reaction device for producing polyether polyols according to claim 1, characterized in that: The heat exchanger disposed inside the reactor (1) comprises a group of heat exchange pipes (4), wherein the heat exchange pipes (4) are tightly fitted to the wall of the reactor (1), and spiral heat exchange fins (5) are disposed inside the heat exchange pipes (4).

4. A reaction device for producing polyether polyols according to claim 1, characterized in that: The agitator assembly disposed inside the reaction kettle (1) comprises a central shaft (6) and one or more replaceable agitating blades (7).

5. A reaction device for producing polyether polyols according to claim 1, characterized in that: The safety pressure relief device arranged on the top of the reaction kettle (1) comprises a pressure sensor (8), and the pressure sensor (8) is connected to the automatic closing valve.

6. A reaction device for producing polyether polyols according to claim 1, characterized in that: The insulating layer (9) arranged outside the reaction kettle (1) is a layer of high temperature resistant material.

7. A reaction device for producing polyether polyols according to claim 1, characterized in that: The material inlet is designed to be conical.

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