An enhanced mixing reactor for recovering monomethylamine waste liquid

Abstract

This utility model relates to the field of chemical technology, and in particular to an enhanced mixing reactor for recovering monomethylamine waste liquid. It includes a recovery tank with four legs arranged in a ring at the bottom. A feed pipe is connected to the right side of the top of the recovery tank. A drive motor is fixedly connected to the center of the top of the recovery tank. A stirring assembly is installed inside the recovery tank, and a waste gas collection assembly is installed on the left side of the recovery tank. The stirring assembly includes a circular cover installed at the top of the inner cavity of the recovery tank. A drive gear is installed in the center of the inner side of the circular cover, and a connecting shaft is fixedly connected to the center of the drive gear. Driven gears are symmetrically arranged on both sides of the inner side of the circular cover, and a rotating rod is fixedly connected to the center of each of the two driven gears. This allows for stirring of the waste liquid and acidic substances, preventing uneven reaction caused by excessively high local concentrations.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, specifically to an enhanced mixed monomethylamine waste liquid recovery reactor. Background Technology

[0002] Monomethylamine is an important aliphatic amine organic chemical raw material, widely used in pesticides, pharmaceuticals, rubber additives, and surfactants. The wastewater generated during its production is commonly referred to as monomethylamine wastewater. This type of wastewater is highly toxic, volatile, and has a high pH value, exhibiting a significantly alkaline characteristic. Direct discharge without proper treatment will pose a serious threat to the ecological environment and human health.

[0003] In practical engineering, neutralization is often used to reduce the alkalinity of waste liquids. However, traditional neutralization processes often involve simply adding acidic substances directly to the waste liquid to initiate the reaction, lacking effective mixing and control methods. This results in insufficient acid-base contact and uneven reaction, thus affecting neutralization efficiency. Furthermore, excessively high local concentrations of acidic substances may trigger intense localized exothermic reactions or runaway reactions, posing certain safety hazards and potentially leading to equipment corrosion or operational accidents. Utility Model Content

[0004] The purpose of this invention is to provide an enhanced mixed monomethylamine waste liquid recovery reactor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An enhanced mixing monomethylamine waste liquid recovery reactor includes a recovery tank, four legs arranged in a ring at the bottom of the recovery tank, a feed pipe connected to the right side of the top of the recovery tank, a drive motor fixedly connected to the center of the top of the recovery tank, a stirring assembly provided in the inner cavity of the recovery tank, and a waste gas collection assembly provided on the left side of the recovery tank.

[0007] The stirring assembly includes a circular cover at the top of the inner cavity of the recycling tank. A drive gear is located in the center of the inner side of the circular cover, and a connecting shaft is fixedly connected to the center of the drive gear. Driven gears are symmetrically arranged on both sides of the inner side of the circular cover, and a rotating rod is fixedly connected to the center of each of the two driven gears. The inner cavity of the recycling tank is provided with two square connecting frames, and stirring rods are equidistantly connected to the inner walls on both sides of the two square connecting frames.

[0008] As a preferred embodiment of this utility model, the top of the circular cover is fixedly connected to the top of the inner cavity of the recycling tank, the circle of the drive gear and the center of the circular cover are on the same straight line, and the top of the connecting shaft is connected to the output end of the drive motor through a coupling.

[0009] As a preferred embodiment of this utility model, both driven gears are meshed with the driving gear, and the two square connecting frames are arranged vertically between each other.

[0010] As a preferred embodiment of this utility model, the bottom ends of both rotating rods extend through the circular cover into the inner cavity of the recycling tank, and the bottom ends of the two rotating rods respectively penetrate the middle of the two square connecting frames.

[0011] As a preferred embodiment of this utility model, an air inlet and pressure relief valve is provided through the top of the recycling tank, and a discharge pipe is connected to the center of the bottom of the recycling tank.

[0012] As a preferred embodiment of this utility model, the waste gas collection assembly includes a support plate disposed on the outer wall of the left side of the recycling tank. The right side of the support plate is arc-shaped and is fixedly connected to the top outer wall of the left side of the recycling tank. A fan is fixedly connected to the top of the support plate. An extraction pipe is connected to the right side of the fan. The end of the extraction pipe away from the fan passes through the top of the recycling tank. A conveying pipe is connected to the left side of the fan.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, two square connecting frames rotate in opposite directions under the action of a drive motor, a drive gear, a driven gear, and a rotating rod, thereby stirring and mixing the waste liquid and acidic substances inside the recycling tank and avoiding uneven reaction caused by excessively high local concentrations.

[0015] 2. In this utility model, the waste gas generated by the neutralization reaction inside the recycling tank can be collected by the fan through the extraction pipe and the conveying pipe, and then transported to the alkaline absorption tower and other equipment for treatment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the recycling tank of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the stirring assembly of this utility model.

[0019] In the diagram: 1. Recycling tank; 2. Support leg; 3. Feed pipe; 4. Drive motor; 5. Agitator assembly; 6. Waste gas collection assembly; 7. Inlet pressure relief valve; 8. Discharge pipe; 501. Circular cover; 502. Drive gear; 503. Connecting shaft; 504. Driven gear; 505. Rotating rod; 506. Square connecting frame; 507. Agitator rod; 601. Support plate; 602. Fan; 603. Extraction pipe; 604. Conveying pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] For examples, please refer to Figure 1-3 This utility model provides a technical solution:

[0025] An enhanced mixing reactor for recovering monomethylamine waste liquid includes a recovery tank 1. Four legs 2 are arranged in a ring at the bottom of the recovery tank 1. A feed pipe 3 is connected to the right side of the top of the recovery tank 1. A drive motor 4 is fixedly connected to the center of the top of the recovery tank 1. A stirring assembly 5 is installed inside the recovery tank 1. A waste gas collection assembly 6 is installed on the left side of the recovery tank 1. The stirring assembly 5 includes a circular cover 501 installed at the top of the inner cavity of the recovery tank 1. A drive gear 502 is installed in the center of the inner side of the circular cover 501. A connecting shaft 503 is fixedly connected to the center of the drive gear 502. Driven gears 504 are symmetrically arranged on both sides of the inner side of the circular cover 501. A rotating rod 505 is fixedly connected to the center of each of the two driven gears 504. Two square connecting frames 506 are installed inside the recovery tank 1. Stirring rods 507 are equidistantly connected to the inner walls on both sides of the two square connecting frames 506.

[0026] like Figure 2 , Figure 3 As shown, the top of the circular cover 501 is fixedly connected to the top of the inner cavity of the recycling tank 1. The circle of the driving gear 502 and the center of the circle of the circular cover 501 are on the same straight line. The top of the connecting shaft 503 is connected to the output end of the drive motor 4 through a coupling. Both driven gears 504 are meshed with the driving gear 502. The two square connecting frames 506 are vertically arranged. The bottom ends of the two rotating rods 505 extend through the circular cover 501 to the inner cavity of the recycling tank 1. The bottom ends of the two rotating rods 505 respectively pass through the middle of the two square connecting frames 506.

[0027] like Figure 1 , Figure 2 As shown, an air inlet and pressure relief valve 7 passes through the top of the recycling tank 1, and a discharge pipe 8 is connected to the center of the bottom of the recycling tank 1. The waste gas collection assembly 6 includes a support plate 601 set on the outer wall of the left side of the recycling tank 1. The right side of the support plate 601 is arc-shaped. The right side of the support plate 601 is fixedly connected to the top outer wall of the left side of the recycling tank 1. A fan 602 is fixedly connected to the top of the support plate 601. An extraction pipe 603 is connected to the right side of the fan 602. The end of the extraction pipe 603 away from the fan 602 passes through the top of the recycling tank 1. A conveying pipe 604 is connected to the left side of the fan 602.

[0028] The working process of this utility model is as follows: During use, the waste liquid of monomethylamine and acidic substances are added into the inside of the recovery and treatment tank 1 through the feed pipe 3. Then the feed pipe 3 is sealed. The drive motor 4 drives the drive gear 502 to rotate through the connecting shaft 503. The drive gear 502 drives the driven gears 504 on both sides to drive the two rotating rods 505 to rotate in opposite directions, thereby causing the two square connecting frames 506 and the stirring rod 507 to rotate in opposite directions, stirring the waste liquid and acidic substances, avoiding uneven reaction caused by excessively high local concentration, or safety hazards caused by local overheating or violent reaction. Waste gas is generated during the neutralization reaction. The fan 602 can use the extraction pipe 603 and the conveying pipe 604 to extract the waste gas and transport it to the alkaline absorption tower and other equipment for treatment.

[0029] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reactor for recovering mixed monomethylamine waste liquid with enhanced efficiency, comprising a recovery treatment tank (1), characterized in that: The bottom of the recycling tank (1) is arranged in a ring with four support legs (2). The right side of the top of the recycling tank (1) is connected to a feed pipe (3). A drive motor (4) is fixedly connected to the center of the top of the recycling tank (1). A stirring assembly (5) is provided in the inner cavity of the recycling tank (1). A waste gas collection assembly (6) is provided on the left side of the recycling tank (1). The stirring assembly (5) includes a circular cover (501) set at the top of the inner cavity of the recycling tank (1). A drive gear (502) is set in the middle of the inner side of the circular cover (501). A connecting shaft (503) is fixedly connected to the center of the drive gear (502). Driven gears (504) are symmetrically arranged on both sides of the inner side of the circular cover (501). A rotating rod (505) is fixedly connected to the center of each of the two driven gears (504). Two square connecting frames (506) are set in the inner cavity of the recycling tank (1). Stirring rods (507) are equidistantly connected to the inner walls on both sides of the two square connecting frames (506).

2. The enhanced mixing monomethylamine waste liquid recovery reactor according to claim 1, characterized in that: The top of the circular cover (501) is fixedly connected to the top of the inner cavity of the recycling tank (1). The center of the drive gear (502) and the center of the circular cover (501) are on the same straight line. The top of the connecting shaft (503) is connected to the output end of the drive motor (4) through a coupling.

3. The enhanced mixing monomethylamine waste liquid recovery reactor according to claim 1, characterized in that: Both driven gears (504) are meshed with the driving gear (502), and the two square connecting frames (506) are arranged vertically between each other.

4. The enhanced mixing monomethylamine waste liquid recovery reactor according to claim 1, characterized in that: The bottom ends of the two rotating rods (505) extend through the circular cover (501) into the inner cavity of the recycling tank (1), and the bottom ends of the two rotating rods (505) respectively extend through the middle of the two square connecting frames (506).

5. The enhanced mixing monomethylamine waste liquid recovery reactor according to claim 1, characterized in that: The top of the recycling tank (1) is connected to an air inlet and pressure relief valve (7), and the bottom center of the recycling tank (1) is connected to a discharge pipe (8).

6. The enhanced mixing monomethylamine waste liquid recovery reactor according to claim 1, characterized in that: The exhaust gas collection assembly (6) includes a support plate (601) disposed on the outer wall of the left side of the recycling tank (1). The right side of the support plate (601) is arc-shaped. The right side of the support plate (601) is fixedly connected to the top outer wall of the left side of the recycling tank (1). A fan (602) is fixedly connected to the top of the support plate (601). An extraction pipe (603) is connected to the right side of the fan (602). The end of the extraction pipe (603) away from the fan (602) passes through the top of the recycling tank (1). A conveying pipe (604) is connected to the left side of the fan (602).

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