Gas mixing device for formaldehyde production
By designing a gas mixing device with hollow tubes and mixing plates in formaldehyde production, the problem of poor gas mixing effect in the prior art is solved, efficient and uniform gas mixing is achieved, and the quality of the production process is improved.
Patent Information
- Application Number
- CN202420787631.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The existing gas mixers have poor mixing effect in formaldehyde production, resulting in low mixing efficiency and affecting subsequent production processes.
A gas mixing device including a mixing box, hollow tube, agitating tube, a blower, a motor and a mixing plate is designed. The mixing plate composed of a multi-layer metal wire ring is realized by rotating the hollow tube and agitating tube and a mixing plate. Point air intake and secondary mixing to improve mixing efficiency and uniformity.
It achieves efficient mixing and uniformity of gases, improves the gas mixing effect in formaldehyde production process, and improves the quality of the production process.
Smart Images
Figure CN222173710U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas mixing, in particular to a gas mixing device for formaldehyde production. Background Art
[0002] Formaldehyde, also known as formic aldehyde, is an organic compound with the chemical formula CH 2 O, the relative molecular mass is 30.03. At room temperature, formaldehyde is a colorless gas, its melting point and boiling point are -92℃ and -21℃ respectively, and its relative density is 0.815g / cm 3 . Formaldehyde has special chemical properties, such as strong reducing ability in alkaline solutions and can burn. Formaldehyde has a wide range of applications in production and life. For example, in the petrochemical, pharmaceutical, textile, biochemical, energy, transportation and other industries, formaldehyde plays an important role. It can be used to make disinfectants, preservatives, antiviral drugs, and even has applications in the treatment of cancer. At the same time, formaldehyde is also an important raw material for the manufacture of phenolic resins, urea-formaldehyde resins, melamine resins and other products. In the formaldehyde production process, methanol gas and air are usually required to be mixed in a gas mixer. Existing gas mixers usually mix various gases in a mixing chamber by themselves, lacking effective mixing components, resulting in poor gas mixing effects, which may affect subsequent production processes. Therefore, it is necessary to develop a gas mixing device for formaldehyde production that can have an efficient mixing component and improve the uniformity of gas mixing. Utility Model Content
[0003] In view of the above technical problems, the utility model provides a gas mixing device for formaldehyde production which can be equipped with a high-efficiency mixing component to improve the uniformity of gas mixing, so as to solve the problems of poor mixing effect and low mixing efficiency of existing gas mixers.
[0004] In order to solve the above technical problems, the utility model discloses a gas mixing device for formaldehyde production, comprising a mixing box, wherein the top of the mixing box is connected to an air inlet pipe, the bottom is connected to an air outlet pipe, a hollow tube is rotatably connected inside the mixing box, a plurality of stirring tubes are fixedly connected to the hollow tube, a plurality of air holes are provided on the stirring tube, one end of the hollow tube passes through the mixing box and is fixedly connected to a rotary joint, the other end of the rotary joint is connected to an output end of a blower, the hollow tube is transmission-connected to a motor, and an induced draft fan is fixedly connected inside the air outlet pipe.
[0005] Furthermore, a mixing plate is fixedly connected to the lower part of the mixing box, and the mixing plate is a "V"-shaped plate structure composed of multiple layers of metal wire rings.
[0006] Furthermore, a mounting plate is fixedly connected to the outer side of the mixing box, and the blower is fixedly connected to the mounting plate.
[0007] Furthermore, the motor is fixedly connected to the mixing box, the motor output shaft is fixedly connected to a driving wheel, the hollow tube is fixedly connected to a driven wheel, and the driving wheel and the driven wheel are connected via a chain transmission.
[0008] Furthermore, the bottom of the mixing box is fixedly connected with supporting legs.
[0009] Furthermore, a valve is connected to the air outlet pipe at the lower part of the induced draft fan.
[0010] Compared with the prior art, the utility model has the following advantages:
[0011] 1. The utility model arranges a hollow tube in a mixing box for rotation, connects a stirring tube to the hollow tube, opens an air hole on the stirring tube, connects the hollow tube to a blower through a rotary joint, and drives a motor to the hollow tube for connection, thereby realizing multi-point air intake, stirring the inside of the mixing box while inputting gas into the mixing box, so that multiple gases are fully mixed, improving gas mixing efficiency and making the gas mixing more uniform.
[0012] 2. The utility model provides a mixing plate formed by a metal wire ring at the lower part of the mixing box, which can perform secondary mixing on the gas when the gas passes through, thereby improving the uniformity of gas mixing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model.
[0014] In the figure: 1. mixing box, 2. air inlet pipe, 3. hollow pipe, 4. stirring pipe, 5. blower, 6. rotary joint, 7. motor, 8. driving wheel, 9. driven wheel, 10. chain, 11. mixing plate, 12. air outlet pipe, 13. induced draft fan, 14. mounting plate, 15. support leg. DETAILED DESCRIPTION
[0015] The utility model will be further described below in conjunction with the accompanying drawings.
[0016] like Figure 1A gas mixing device for formaldehyde production shown in the figure comprises a mixing box 1, the top of the mixing box 1 is connected to an air inlet pipe 2, the bottom is connected to an air outlet pipe 12, in order to facilitate the support of the equipment, the bottom of the mixing box 1 is fixedly connected to a support leg 15, a hollow tube 3 is rotatably connected to the mixing box 1 through a bearing, a plurality of stirring tubes 4 are fixedly connected to the hollow tube 3, the stirring tube 4 is connected to the hollow tube 3, a plurality of air holes are opened on the stirring tube 4, one end of the hollow tube 3 extends through the outside of the mixing box 1 and is fixedly connected to a rotary joint 6, the other end of the rotary joint 6 is connected to the output end of the blower 5, the hollow tube 3 is transmission-connected to the motor 7, and an induced draft fan 13 is fixedly connected to the air outlet pipe 12. In order to prevent leakage before gas mixing, a valve is connected to the air outlet pipe 12 at the lower part of the induced draft fan 13.
[0017] It should be noted that the number of air inlet pipes 2 can be set according to the type of mixed gas required by the production process. In this embodiment, two air inlet pipes 2 are provided, one of which is used for passing methanol gas and the other is used for passing steam.
[0018] In order to perform secondary mixing on the mixed gas and improve the uniformity of gas mixing, a mixing plate 11 is fixedly connected below the hollow tube 3 and the stirring tube 4 in the mixing box 1. The mixing plate 11 is a "V"-shaped plate structure composed of multiple layers of metal wire rings, which can increase the contact area and thus improve the mixing effect.
[0019] In order to improve the operational stability of the equipment and facilitate the installation of the blower 5 , a mounting plate 14 is fixedly connected to the outer side of the mixing box 1 , and the blower 5 is fixedly connected to the mounting plate 14 .
[0020] In order to drive the hollow tube 3 and the stirring tube 4 to rotate by the motor 7 and realize sufficient mixing and stirring, the motor 7 is fixedly connected to the mixing box 1 by bolts, the output shaft of the motor 7 is fixedly connected to the driving wheel 8, and the hollow tube 3 is fixedly connected to the driven wheel 9, and the driving wheel 8 and the driven wheel 9 are both sprockets, which are connected by a chain 10.
[0021] It should be noted that the motor 7 and the hollow tube 3 can also be connected to each other through a belt and a pulley, bevel gear meshing, etc.
[0022] The working process of this embodiment is as follows:
[0023] The outlet pipe of the methanol evaporator is connected with the inlet pipe 12, and the outlet pipe 12 is connected with the next process equipment. The methanol gas enters the mixing box 1 through the inlet pipe 12, and the blower 5 is started synchronously. The blower 5 blows air to make the air enter the hollow tube 3 through the rotary joint 6 and disperse into the mixing box 1 from the air holes of the stirring tube 4. The motor 7 is started synchronously, and the motor 7 drives the driving wheel 8 to rotate, and drives the driven wheel 9 to rotate under the action of the chain 10, thereby driving the hollow tube 3 and the stirring tube 4 to rotate, so as to fully stir and mix the gas in the mixing box 1, thereby improving the mixing efficiency and mixing effect. After that, the valve on the outlet pipe 12 is opened, and the induced draft fan 13 is started. Under the action of the induced draft fan 13, the mixed gas passes through the mixing plate 11. Since the mixing plate 11 is composed of a metal wire ring, the gas can be mixed twice, so that the gas mixing is more uniform, and the mixed gas enters the next process equipment from the outlet pipe 12.
Claims
1. A gas mixing device for formaldehyde production, comprising a mixing box (1), wherein the top of the mixing box (1) is connected to an air inlet pipe (2), and the bottom of the mixing box (1) is connected to an air outlet pipe (12), Features: A hollow tube (3) is rotatably connected inside the mixing box (1), a plurality of stirring tubes (4) are fixedly connected to the hollow tube (3), a plurality of air holes are provided on the stirring tube (4), one end of the hollow tube (3) passes through the mixing box (1) and is fixedly connected to a rotating joint (6), the other end of the rotating joint (6) is connected to the output end of the blower (5), the hollow tube (3) is drivingly connected to the motor (7), the exhaust pipe (12) is fixedly connected to an induced draft fan (13), and a mixing plate (11) is fixedly connected to the lower part of the mixing box (1), the mixing plate (11) is a "V"-shaped plate structure composed of multiple layers of metal wire rings.
2. The gas mixing device for formaldehyde production according to claim 1, Features: A mounting plate (14) is fixedly connected to the outside of the mixing box (1), and the blower (5) is fixedly connected to the mounting plate (14).
3. The gas mixing device for formaldehyde production according to claim 1, Features: The motor (7) is fixedly connected to the mixing box (1); the output shaft of the motor (7) is fixedly connected to a driving wheel (8); the hollow tube (3) is fixedly connected to a driven wheel (9); the driving wheel (8) and the driven wheel (9) are connected by a chain (10).
4. The gas mixing device for formaldehyde production according to claim 1, Features: The bottom of the mixing box (1) is fixedly connected with a support leg (15).
5. The gas mixing device for formaldehyde production according to claim 1, Features: The air outlet pipe (12) is connected to a valve at the lower part of the induced draft fan (13).