Reactor for iron-molybdenum method formaldehyde process

Abstract

The reactor comprises a reaction cylinder, four groups of supporting columns are fixedly connected to the top of the reaction cylinder, a liquid storage barrel is fixedly connected to the top ends of the four groups of supporting columns, and a liquid outlet pipe is fixedly communicated with the bottom of the liquid storage barrel. Through cooperative use of the reaction cylinder, the supporting column, the liquid storage barrel, the liquid outlet pipe, the liquid inlet pipe and the power assembly, methanol in the liquid storage barrel can be quantitatively extracted through the power assembly and then discharged into the reaction cylinder through the liquid inlet pipe, so that the effect of quantitatively and accurately adding methanol is achieved, and the production efficiency and purity of formaldehyde are improved; methanol and a catalyst can be uniformly mixed in the reaction cylinder through the arranged stirring assembly, so that methanol molecules are in full contact with active sites of the catalyst, the reaction rate is increased, the formaldehyde generation efficiency is improved, the mass transfer resistance in the reaction process is favorably reduced through uniform mixing, and the reaction is quicker and more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde preparation, in particular to a reactor used in an iron-molybdenum formaldehyde process. Background Art

[0002] Formaldehyde, as an important organic compound, has a wide range of applications in the chemical industry, such as in the production of various chemical products such as resins, dyes, and pharmaceuticals, as well as its use as a preservative, disinfectant, and adhesive. The iron-molybdenum process is a highly efficient and selective formaldehyde production method. The core of the iron-molybdenum formaldehyde process reactor lies in the use of an iron-molybdenum catalyst to catalyze the oxidation of methanol to formaldehyde under suitable conditions. This catalyst is typically composed of iron and molybdenum and may contain other additives to form a composite catalyst. During the reaction, methanol and air (or oxygen) undergo a series of oxidation and reduction reactions under the action of the catalyst, ultimately producing formaldehyde.

[0003] Methanol is a reaction raw material, and precise control of its addition amount is crucial to maintaining the efficiency and stability of the reaction. The existing method of methanol addition often uses equipment such as a burette or pump to manually adjust the flow of methanol. This method is not only cumbersome to operate, but also easily affected by human factors, resulting in fluctuations in the amount of methanol added, which in turn affects the yield and purity of formaldehyde. Therefore, we need to propose a reactor for the iron-molybdenum formaldehyde process. Utility Model Content

[0004] The purpose of the utility model is to provide a reactor for the iron-molybdenum formaldehyde process, aiming to solve the problem that the methanol addition method in the prior art often uses a burette or pump and other equipment to manually adjust the flow rate of methanol. This method is not only cumbersome to operate, but also easily affected by human factors, resulting in fluctuations in the amount of methanol added, which in turn affects the yield and purity of formaldehyde.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A reactor for an iron-molybdenum formaldehyde process comprises a reaction cylinder, the top of which is fixedly connected to four groups of pillars, the top ends of the four groups of pillars are fixedly connected to a liquid storage barrel, the bottom of the liquid storage barrel is fixedly connected to a liquid outlet pipe, the top of the reaction cylinder is fixedly connected to a liquid inlet pipe, one end of the liquid outlet pipe and the liquid inlet pipe is provided with a power component for quantitatively adding methanol into the interior of the reaction cylinder, and the interior of the reaction cylinder is provided with a stirring component for fully mixing the quantitative methanol with a catalyst.

[0007] Preferably, the power assembly includes an addition tube, which is fixedly installed on the top of the reaction cylinder. A piston is slidably connected to the inside of the addition tube, and a sliding rod is fixedly connected to one side of the piston. One end of the sliding rod passes through the addition tube, and the sliding rod is slidably connected to the addition tube.

[0008] Preferably, it further includes an electric push rod, which is fixedly mounted on one side wall of the reaction cylinder and the liquid storage barrel through a mounting frame, and one end of the telescopic end of the electric push rod passes through the mounting frame and is fixedly connected to one end of the sliding rod.

[0009] Preferably, one end of the liquid outlet pipe and the liquid inlet pipe are both fixedly connected to one end of the addition pipe, and a one-way valve is provided on the outer wall of the liquid outlet pipe and the liquid inlet pipe.

[0010] Preferably, the stirring assembly includes a rotating rod, the bottom end of which is rotatably connected to the inner bottom of the reaction cylinder, the bottom end of the rotating rod passes through the reaction cylinder and is connected to a drive motor, and a stirring paddle is fixedly connected to the outer wall of the rotating rod.

[0011] Preferably, the driving motor is fixedly installed at the bottom of the reaction cylinder, and one end of the output shaft of the driving motor is fixedly connected to the bottom end of the rotating rod.

[0012] Preferably, a feed pipe is fixedly connected to the top of the liquid storage barrel, and a discharge pipe is fixedly connected to the outer wall of the reaction cylinder.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model sets a reaction cylinder, a support, a liquid storage barrel, a liquid outlet pipe, a liquid inlet pipe and a power component for coordinated use. The power component can extract the methanol inside the liquid storage barrel in a quantitative manner, and then discharge it into the interior of the reaction cylinder through the liquid inlet pipe, so as to achieve the effect of quantitative and accurate addition of methanol, which is beneficial to improving the production efficiency and purity of formaldehyde. In addition, the stirring component set can evenly mix the methanol and the catalyst in the reaction cylinder, so that the methanol molecules are in full contact with the active sites of the catalyst, thereby accelerating the reaction rate and improving the formaldehyde generation efficiency. This even mixing helps to reduce the mass transfer resistance during the reaction process, making the reaction more rapid and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the shaft side of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the power assembly of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure inside the reaction tube of the utility model.

[0019] In the figure: 1. Reaction cylinder; 2. Support; 3. Liquid storage barrel; 4. Liquid outlet pipe; 5. Liquid inlet pipe; 6. Power assembly; 601. Addition pipe; 602. Piston; 603. Sliding rod; 604. Electric push rod; 7. Stirring assembly; 701. Rotating rod; 702. Drive motor; 703. Stirring paddle; 8. One-way valve; 9. Feed pipe; 10. Discharge pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 , the utility model provides a technical solution:

[0022] A reactor for an iron-molybdenum formaldehyde process comprises a reaction cylinder 1, wherein the top of the reaction cylinder 1 is fixedly connected to four groups of pillars 2, the tops of the four groups of pillars 2 are fixedly connected to a liquid storage barrel 3, the bottom of the liquid storage barrel 3 is fixedly connected to a liquid outlet pipe 4, the top of the reaction cylinder 1 is fixedly connected to a liquid inlet pipe 5, and one end of the liquid outlet pipe 4 and the liquid inlet pipe 5 is provided with a power assembly 6 for quantitatively adding methanol into the interior of the reaction cylinder 1. By arranging the reaction cylinder 1, the pillars 2, the liquid storage barrel 3, the liquid outlet pipe 4, the liquid inlet pipe 5 and the power assembly 6 for use in combination, the methanol in the liquid storage barrel 3 can be quantitatively added through the power assembly 6. A certain amount of methanol is extracted and then discharged into the interior of the reaction cylinder 1 through the liquid inlet pipe 5, thereby achieving the effect of quantitative and accurate addition of methanol, which is beneficial to improving the production efficiency and purity of formaldehyde. The interior of the reaction cylinder 1 is provided with a stirring component 7 for fully mixing the quantitative methanol with the catalyst. The stirring component 7 can uniformly mix the methanol and the catalyst in the reaction cylinder 1, so that the methanol molecules are fully in contact with the active sites of the catalyst, thereby accelerating the reaction rate and improving the efficiency of formaldehyde generation. This uniform mixing helps to reduce the mass transfer resistance during the reaction process, making the reaction more rapid and efficient.

[0023] The power assembly 6 includes an addition tube 601, which is fixedly mounted on the top of the reaction cylinder 1. A piston 602 is slidably connected to the interior of the addition tube 601. A slide rod 603 is fixedly connected to one side of the piston 602. One end of the slide rod 603 passes through the addition tube 601, and the slide rod 603 is slidably connected to the addition tube 601.

[0024] It also includes an electric push rod 604, which is fixedly mounted on one side wall of the reaction cylinder 1 and the liquid storage barrel 3 through a mounting bracket, and one end of the telescopic end of the electric push rod 604 passes through the mounting bracket and is fixedly connected to one end of the slide rod 603;

[0025] By adopting the above example, the sliding rod 603 can be driven to move by the telescopic end of the electric push rod 604, thereby driving the piston 602 to move. When the piston 602 moves toward the direction of the electric push rod 604, the methanol inside the liquid storage barrel 3 can be quantitatively extracted through the liquid outlet pipe 4 and enter the interior of the addition pipe 601 through the liquid outlet pipe 4. Then, the piston 602 is pushed by the telescopic end of the electric push rod 604, and the methanol inside the addition pipe 601 can be discharged into the interior of the reaction cylinder 1 through the liquid inlet pipe 5;

[0026] One end of the liquid outlet pipe 4 and the liquid inlet pipe 5 are fixedly connected to one end of the addition pipe 601, and a one-way valve 8 is provided on the outer wall of the liquid outlet pipe 4 and the liquid inlet pipe 5. The one-way valve 8 prevents methanol from flowing back and limits the flow direction of methanol.

[0027] The stirring assembly 7 includes a rotating rod 701, the bottom end of which is rotatably connected to the inner bottom of the reaction tube 1. The bottom end of the rotating rod 701 passes through the reaction tube 1 and is connected to a drive motor 702. A stirring paddle 703 is fixedly connected to the outer wall of the rotating rod 701. The output shaft of the drive motor 702 can drive the rotating rod 701 to rotate, thereby driving the stirring paddle 703 to rotate, thereby achieving the effect of fully stirring and mixing the methanol and the catalyst inside the reaction tube 1, so that the methanol molecules are fully in contact with the active sites of the catalyst, thereby accelerating the reaction rate and improving the formaldehyde generation efficiency. This uniform mixing helps to reduce the mass transfer resistance during the reaction process, making the reaction more rapid and efficient.

[0028] The driving motor 702 is fixedly mounted on the bottom of the reaction tube 1, and one end of the output shaft of the driving motor 702 is fixedly connected to the bottom end of the rotating rod 701. The driving motor 702 is configured as a stepping motor.

[0029] A feed pipe 9 is fixedly connected to the top of the liquid storage barrel 3. By setting the feed pipe 9, methanol can be easily added to the interior of the liquid storage barrel 3. A discharge pipe 10 is fixedly connected to the outer wall of the reaction cylinder 1. A valve is provided on the outer wall of the discharge pipe 10. The formaldehyde generated by the reaction can be discharged through the discharge pipe 10, thereby facilitating its unified collection and treatment.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reactor for an iron-molybdenum formaldehyde process, comprising a reaction tube (1), characterized in that: The top of the reaction cylinder (1) is fixedly connected to four groups of pillars (2), the top ends of the four groups of pillars (2) are fixedly connected to a liquid storage barrel (3), the bottom of the liquid storage barrel (3) is fixedly connected to a liquid outlet pipe (4), the top of the reaction cylinder (1) is fixedly connected to a liquid inlet pipe (5), one end of the liquid outlet pipe (4) and the liquid inlet pipe (5) is provided with a power component (6) for quantitatively adding methanol into the interior of the reaction cylinder (1), and the interior of the reaction cylinder (1) is provided with a stirring component (7) for fully mixing the quantitative methanol with the catalyst.

2. The reactor for the iron-molybdenum formaldehyde process according to claim 1, characterized in that: The power assembly (6) includes an addition tube (601), which is fixedly installed on the top of the reaction cylinder (1). The interior of the addition tube (601) is slidably connected to a piston (602), and one side of the piston (602) is fixedly connected to a sliding rod (603). One end of the sliding rod (603) passes through the addition tube (601), and the sliding rod (603) is slidably connected to the addition tube (601).

3. A reactor for an iron-molybdenum formaldehyde process according to claim 2, characterized in that: It also includes an electric push rod (604), which is fixedly mounted on a side wall of the reaction cylinder (1) and the liquid storage barrel (3) through a mounting frame, and one end of the telescopic end of the electric push rod (604) passes through the mounting frame and is fixedly connected to one end of the sliding rod (603).

4. The reactor for the iron-molybdenum formaldehyde process according to claim 1, characterized in that: One end of the liquid outlet pipe (4) and the liquid inlet pipe (5) are both fixedly connected to one end of the addition pipe (601), and a one-way valve (8) is provided on the outer wall of each of the liquid outlet pipe (4) and the liquid inlet pipe (5).

5. The reactor for the iron-molybdenum formaldehyde process according to claim 1, characterized in that: The stirring assembly (7) comprises a rotating rod (701), the bottom end of the rotating rod (701) being rotatably connected to the inner bottom of the reaction barrel (1), the bottom end of the rotating rod (701) passing through the reaction barrel (1) and connected to a driving motor (702), and a stirring paddle (703) being fixedly connected to the outer wall of the rotating rod (701).

6. The reactor for the iron-molybdenum formaldehyde process according to claim 5, characterized in that: The driving motor (702) is fixedly mounted on the bottom of the reaction cylinder (1), and one end of the output shaft of the driving motor (702) is fixedly connected to the bottom end of the rotating rod (701).

7. The reactor for the iron-molybdenum formaldehyde process according to claim 1, characterized in that: The top of the liquid storage barrel (3) is fixedly connected to a feed pipe (9), and the outer wall of the reaction cylinder (1) is fixedly connected to a discharge pipe (10).

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