Gas mixing device for acrolein production
By designing a gas mixing device with inclined inlet pipelines, the problems of complex design and high cost of existing mixers are solved, and efficient gas mixing effect and low-cost operation are achieved.
Patent Information
- Application Number
- CN202421683726.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing gas raw material mixer has complex designs and requires dynamic equipment or complex baffles, resulting in high equipment costs and operating costs and poor mixing effect.
A gas mixing device is designed. The bottom of the mixer body is equipped with an air inlet and a bottom of the propylene and steam inlet. The inlet pipeline is inclined at a certain angle with the mixer, and the direction of rotation of the propylene and steam is opposite to that of the mixer to improve the mixing effect.
It realizes the gas mixing effect with simple equipment structure and low production and operation cost, improves the propylene conversion rate and acrolein yield, and does not require dynamic equipment or complex baffles.
Smart Images
Figure CN222918476U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, in particular to a gas mixing device for acrolein production. Background Art
[0002] In chemical production, many gas-gas reactions require the use of gas mixers. Specifically, for gas-gas reactions such as the oxidation of propylene to prepare acrolein, the mixing step of raw materials is crucial, and the quality of mixing determines the conversion rate of raw materials and the product yield. Therefore, in order to achieve an ideal mixing effect, the structure and performance of the gas mixer are crucial.
[0003] Currently, for such reaction raw material mixers commonly used, in order to improve the mixing effect, one is to set a large number of baffle plates inside the mixer to increase the flow path of the gas flow and improve the mixing effect; the other is to add a stirring device inside the mixer to increase the mixing degree by driving the blades with a motor.
[0004] The mixing methods of existing gas raw material mixers either require the setting of complex internal fixed components or the addition of moving equipment, with cumbersome designs, high equipment costs, and high production and operation costs. Summary of the Invention
[0005] The technical problem to be solved by the utility model is: aiming at the deficiencies existing in the prior art, to provide a gas mixing device for acrolein production with a simple equipment structure, low equipment production and operation costs, and good gas mixing effect.
[0006] To solve the above technical problem, the technical solution of the utility model is:
[0007] A gas mixing device for acrolein production includes a mixer body. An air inlet is provided at the bottom of the mixer body, and a mixed gas outlet is provided at the top of the mixer body; a propylene inlet and a steam inlet are provided at the lower part of the mixer body.
[0008] The propylene inlet and the steam inlet are arranged at the same height in the tangential direction on both sides of the mixer body, and the inlet directions are on the same side of the mixer body; the feed pipelines of the propylene inlet and the steam inlet are inclined at a certain angle with respect to the mixer body.
[0009] As an improved technical solution, a filler is provided at the upper part of the mixer body.
[0010] As an improved technical solution, a heating and insulation device is provided on the outer wall of the mixer body.
[0011] As a preferred technical solution, the heating and insulation device is a heat-insulating jacket or a heating and insulation layer.
[0012] As an improved technical solution, the feeding pipelines of the propylene inlet and the steam inlet are inclined at an acute angle with the mixer body, and the direction is inclined upward.
[0013] As a preferred technical solution, the feeding pipelines of the propylene inlet and the steam inlet are inclined at an angle of 45° with the mixer body, and the direction is inclined upward.
[0014] As an improved technical solution, the steam inlet is communicated with the production tail gas outlet.
[0015] Due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:
[0016] For the gas mixing device for acrolein production of the present utility model, an air inlet is provided at the bottom of the mixer body, the propylene inlet and the steam inlet are arranged at the same height in the tangential direction on both sides of the mixer body, and the inlet directions are on the same side of the mixer body; the feeding pipelines of the propylene inlet and the steam inlet are inclined at a certain angle with the mixer body. With the setting of the raw material inlets of the present utility model, the raw materials propylene and steam enter in a rotating manner at a certain angular velocity, and the rotation directions of propylene and steam are opposite, which is more conducive to the mixing and collision of materials. At this time, when encountering the air coming in from the bottom, rapid mixing occurs, and then continuous mixing continues during the rotating upward process. The present utility model does not require dynamic equipment in the existing equipment to strengthen mixing, nor does it require complex structures such as baffle plates, etc., and can achieve a good mixing effect, improve the mixing degree of various gaseous materials, improve the propylene conversion rate and the acrolein yield; and the equipment structure is simple, the equipment investment is small, and the production operation cost is low.
[0017] A filler is provided at the upper part of the mixer body of the present utility model, which can enable the mixed gas to further collide and mix in the filler layer, and strengthen the mixing effect.
[0018] A heating and heat preservation device is provided on the outer wall of the mixer body of the present utility model, which can accelerate the movement of gas molecules and at the same time avoid uneven mixing of materials caused by the condensation of water vapor. Description of the Drawings
[0019] The following further illustrates the present utility model in conjunction with the drawings and embodiments.
[0020] Figure 1 is the structural schematic diagram of the embodiment of the present utility model;
[0021] Figure 2 is Figure 1 the cross-sectional view at A-A in
[0022] Figure 3 is the feeding direction schematic diagram of the embodiment of the present utility model.
[0023] In the figure, 1. mixer body; 2. air inlet; 3. mixed gas outlet; 4. propylene inlet; 5. steam inlet; 6. packing; 7. heating and insulation device. Detailed implementation mode
[0024] The present invention will be further described below in conjunction with the drawings and embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.
[0025] As shown in the attached Figure 1 、 2 As commonly shown in FIGS. 1, 2, and 3, a gas mixing device for acrolein production includes a mixer body 1. An air inlet 2 is provided at the bottom of the mixer body 1, and a mixed gas outlet 3 is provided at the top of the mixer body 1; a propylene inlet 4 and a steam inlet 5 are provided at the lower part of the mixer body 1; a packing 6 is provided at the upper part of the mixer body 1; and a heating and insulation device 7 is provided on the outer wall of the mixer body 1.
[0026] The propylene inlet 4 and the steam inlet 5 are arranged at the same height in the tangential direction on both sides of the mixer body 1, and the inlet directions are on the same side of the mixer body 1; the feed pipelines of the propylene inlet 4 and the steam inlet 5 are inclined at a certain angle with respect to the mixer body 1.
[0027] As a preferred technical solution, the heating and insulation device 7 is a heat-insulating jacket or a heating and insulation layer.
[0028] As a preferred technical solution, the feed pipelines of the propylene inlet 4 and the steam inlet 5 are inclined at an angle of 45° with respect to the mixer body 1, and the direction is inclined upward.
Claims
1. A gas mixing device for acrolein production, comprising a mixer body, characterized in that: The bottom of the mixer body is provided with an air inlet, and the top of the mixer body is provided with a mixed gas outlet; A propylene inlet and a steam inlet are provided at the lower part of the mixer body; The propylene inlet and the steam inlet are arranged at the same height in the tangent direction on both sides of the mixer body, and the inlet directions are located on the same side of the mixer body; the feed pipelines of the propylene inlet and the steam inlet are inclined at a certain angle to the mixer body.
2. The gas mixing device for acrolein production according to claim 1, characterized in that: A filler is arranged on the upper part of the mixer body.
3. The gas mixing device for acrolein production according to claim 1, characterized in that: The outer wall of the mixer body is provided with a heating and heat preservation device.
4. The gas mixing device for acrolein production according to claim 3, characterized in that: The heating and heat-insulating device is a heat-insulating jacket or a heating and heat-insulating layer.
5. The gas mixing device for acrolein production according to claim 1, characterized in that: The feed lines of the propylene inlet and the steam inlet are inclined at an acute angle to the mixer body and are inclined upward.
6. The gas mixing device for acrolein production according to claim 5, characterized in that: The feed lines of the propylene inlet and the steam inlet are inclined at an angle of 45° to the mixer body.