Hydrogenation device for preparing 1, 4-butanediol

Abstract

The utility model relates to the technical field of solution preparation, in particular to a hydrogenation device for preparing 1, 4-butanediol, which comprises a supporting seat and a reaction mechanism for stirring and mixing a solution, the reaction mechanism is positioned above the supporting seat, a plurality of groups of stirring frames which are distributed up and down are fixed on the side wall of an inner cylinder, spoilers are arranged below the stirring frames, and the spoilers are arranged below the inner cylinder. And a hydrogenation structure for performing hydrogenation on the interior of the reaction solution is arranged between the stirring frame and the inner cylinder. The device has the beneficial effects that the volume of sprayed hydrogen bubbles is reduced through the hydrogenation structure, the contact area of the hydrogen bubbles and a solution is increased, hydrogen and the solution are mixed more uniformly, then mutual movement of the spoiler and the stirring frame is driven to disturb the solution, a local turbulent flow phenomenon is formed, the mixing uniformity of the hydrogen and the solution is further improved, and the mixing efficiency is improved. More sufficient reaction of hydrogen and the solution is guaranteed, waste of hydrogen is reduced, the solution preparation concentration is guaranteed, and the solution preparation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solution preparation, in particular to a hydrogenation device for preparing 1,4-butanediol. Background Technique

[0002] When extracting 1,4-butanediol with hydrogen, the main liquid raw material of 1,4-butanediol needs to be put into the inside of the reaction kettle, and at the same time, an appropriate amount of hydrogen and catalyst are added into the reaction kettle. With the stirring rod in the reaction kettle, the reaction is carried out under a certain temperature and pressure to form 1,4-butanediol. Therefore, a corresponding reaction device is needed to prepare the 1,4-butanediol solution.

[0003] By comparing a hydrogenation device for preparing 1,4-butanediol with the patent publication number CN220900399U, in this scheme, the motor drives the worm to rotate. When the worm rotates, it can drive the worm wheel to rotate. Since the worm wheel is fixed to the stirring shaft, the worm wheel drives the stirring shaft to rotate. Then the stirring shaft and the stirring blades rotate accordingly to stir it. At the same time, hydrogen is added through the feed pipe to react with formaldehyde and acetylene, and the waste gas after the reaction is discharged through the exhaust assembly. However, when stirring the solution, the stirring method of the stirring blades is relatively single, which may cause the hydrogen added to be unevenly mixed with the solution, resulting in insufficient reaction of hydrogen with the solution. It may cause a part of hydrogen to be wasted without sufficient reaction, and may cause the concentration of the generated solution to decrease and not meet the standard, reducing the efficiency of solution preparation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hydrogenation device for preparing 1,4-butanediol to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] A hydrogenation device for preparing 1,4-butanediol includes a support base, and further includes a reaction mechanism for stirring and mixing the solution. The reaction mechanism is located above the support base;

[0007] The reaction mechanism includes a reaction kettle arranged above the support base. An inner cylinder is rotatably installed inside the reaction kettle. The inner cylinder is hollow. A plurality of groups of stirring frames are fixed on the side wall of the inner cylinder and are distributed up and down. Each group has three and is distributed around the center of the inner cylinder. A spoiler is arranged below the stirring frame. A plurality of stirring plates are arranged at the ends of the spoiler and the stirring frame away from each other. A rotating motor is arranged above the reaction kettle. Pulley wheels are arranged at the output end of the rotating motor and the upper end of the inner cylinder, and a transmission belt is connected between the two pulley wheels. A hydrogenation structure for hydrogenating the inside of the reaction solution is arranged between the stirring frame and the inner cylinder.

[0008] Preferably, the hydrogenation structure includes a gas transmission pipe fixedly arranged inside the inner cylinder. A sliding plate is slidably installed inside the stirring frame. A tension spring is connected between the sliding plate and the inner wall of the stirring frame. An air inlet cavity is arranged between the upper end of the sliding plate and the stirring frame. An air inlet pipe is connected between the upper end of the air inlet cavity and the gas transmission pipe. A plurality of upper through holes are formed on the surface of the sliding plate, and a plurality of lower through holes are formed at the lower end of the stirring frame. The lower through holes are communicated with the upper through holes. A mixing structure for promoting the uniform mixing reaction of hydrogen and the solution is arranged between the stirring frame and the spoiler.

[0009] Preferably, the mixing structure includes a wedge block arranged at one end of the sliding plate close to the inner cylinder. The spoiler is slidably connected with the inner cylinder, and a baffle is arranged at the sliding end of the spoiler and the inner cylinder. A wedge plate is fixed at one end of the spoiler close to the inner cylinder. A compression spring is connected between the bottom end of the spoiler and the side wall of the inner cylinder. The mutually approaching sides of the wedge block and the wedge plate are both inclined planes and are slidably matched. A convex block is fixed at the end of the sliding plate away from the inner cylinder. A top block is arranged on the inner wall of the reaction kettle close to the convex block. The mutually approaching ends of the top block and the convex block are both arc surfaces and are slidably matched.

[0010] Preferably, the spoiler is wavy.

[0011] Preferably, a guide plate is arranged at one end of the air inlet cavity close to the air inlet pipe.

[0012] Preferably, reflux plates are fixed at both ends of the spoiler, and the included angle between the reflux plate and the spoiler is an obtuse angle.

[0013] Preferably, a feed pipe is arranged at the upper end of the support seat, and a discharge pipe is arranged at the lower end. Solenoid valves are arranged on both the feed pipe and the discharge pipe.

[0014] Compared with the prior art, the beneficial effects are as follows:

[0015] When preparing the 1,4-butanediol solution, hydrogen needs to be added to the raw materials. Then, the hydrogenation structure is used to reduce the volume of hydrogen bubbles ejected, increase the contact area between the hydrogen bubbles and the solution, make the mixing of hydrogen and the solution more uniform, and then drive the mutual movement of the spoiler and the stirring frame to disturb the solution, forming a local turbulent flow phenomenon, further improving the uniformity of the mixing of hydrogen and the solution, ensuring that the reaction between hydrogen and the solution is more sufficient, reducing the waste of hydrogen, ensuring the concentration of the solution preparation, and improving the efficiency of the solution preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a three-dimensional space diagram of a hydrogenation device for preparing 1,4-butanediol according to the present utility model;

[0018] Figure 2 is a structural sectional view inside the reaction kettle of a hydrogenation device for preparing 1,4-butanediol according to the present utility model;

[0019] Figure 3 is a structural sectional view between the stirring frame and the inside of the inner cylinder of a hydrogenation device for preparing 1,4-butanediol according to the present utility model;

[0020] Figure 4 is Figure 3 a partial enlarged view at position A in

[0021] Figure 5 is a structural sectional view between the inner wall of the reaction kettle and the stirring frame of a hydrogenation device for preparing 1,4-butanediol according to the present utility model.

[0022] The description of the reference numerals is as follows:

[0023] 100, support base; 201, reaction kettle; 202, inner cylinder; 203, rotating motor; 204, gas transmission pipe; 205, stirring frame; 206, spoiler; 207, intake pipe; 208, convex block; 209, top block; 210, sliding plate; 211, air guide plate; 212, wedge block; 213, wedge plate; 214, baffle; 215, reflux plate; 216, stirring plate; 217, intake cavity; 218, upper through hole; 219, lower through hole. Detailed implementation manners

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] The present utility model will be further described below with reference to the accompanying drawings:

[0026] As Figures 1 - 5 shown, a hydrogenation device for preparing 1,4-butanediol includes a support base 100, and further includes a reaction mechanism for stirring and mixing the solution. The reaction mechanism is located above the support base 100.

[0027] In this embodiment: The reaction mechanism includes a reaction kettle 201 arranged above the support base 100. Inside the reaction kettle 201, an inner cylinder 202 is rotatably installed. The inner cylinder 202 is hollow. A plurality of groups of stirring frames 205 distributed up and down are fixed on the side wall of the inner cylinder 202. Each group has three and is distributed around the center of the inner cylinder 202. A spoiler 206 is arranged below the stirring frame 205. The spoiler 206 is wavy. A plurality of stirring plates 216 are arranged at the ends of the spoiler 206 and the stirring frame 205 that are away from each other. A rotating motor 203 is arranged above the reaction kettle 201. Pulley wheels are arranged at the output end of the rotating motor 203 and the upper end of the inner cylinder 202, and a transmission belt is connected between the two pulley wheels. A hydrogenation structure for hydrogenating the inside of the reaction solution is arranged between the stirring frame 205 and the inner cylinder 202.

[0028] The hydrogenation structure includes a gas transmission pipe 204 fixedly arranged inside the inner cylinder 202. The gas transmission pipe 204 passes through the bottom end of the inner cylinder 202. A base is arranged at the bottom end of the gas transmission pipe 204. The inner cylinder 202 is rotatably connected to the base. The base is fixed to the inner wall of the reaction kettle 201. An L-shaped gas supply pipe is installed at the bottom end of the base. The gas transmission pipe 204 is communicated with the gas supply pipe. A sliding plate 210 is slidably installed inside the stirring frame 205. A tension spring is connected between the sliding plate 210 and the inner wall of the stirring frame 205. An air inlet cavity 217 is arranged between the upper end of the sliding plate 210 and the stirring frame 205. An air inlet pipe 207 is connected between the upper end of the air inlet cavity 217 and the gas transmission pipe 204. A plurality of upper through holes 218 are formed on the surface of the sliding plate 210. A plurality of lower through holes 219 are formed at the lower end of the stirring frame 205. The lower through holes 219 are communicated with the upper through holes 218. A guide air plate 211 is arranged at one end of the air inlet cavity 217 close to the air inlet pipe 207. A mixing structure for promoting the uniform mixing reaction of hydrogen and the solution is arranged between the stirring frame 205 and the spoiler 206.

[0029] The hybrid structure includes a wedge block 212 disposed at one end of the sliding plate 210 close to the inner cylinder 202. The spoiler plate 206 is slidably connected to the inner cylinder 202, and a baffle 214 is provided at the sliding end of the spoiler plate 206 and the inner cylinder 202. A wedge plate 213 is fixed to one end of the spoiler plate 206 close to the inner cylinder 202. A compression spring is connected between the bottom end of the spoiler plate 206 and the side wall of the inner cylinder 202. The mutually approaching sides of the wedge block 212 and the wedge plate 213 are both inclined planes and are in sliding fit. A convex block 208 is fixed to one end of the sliding plate 210 away from the inner cylinder 202. A top block 209 is provided on the inner wall of the reactor 201 close to the convex block 208. The mutually approaching ends of the top block 209 and the convex block 208 are both arc surfaces and are in sliding fit. Anti-flow plates 215 are fixed to both ends of the spoiler plate 206. The angle between the anti-flow plate 215 and the spoiler plate 206 is an obtuse angle. An inlet pipe is provided at the upper end of the support base 100, and an outlet pipe is provided at the lower end. Solenoid valves are provided on both the inlet pipe and the outlet pipe. The volume of hydrogen bubbles ejected is reduced through the hydrogenation structure, and the contact area between the hydrogen bubbles and the solution is increased, so that hydrogen and the solution are mixed more evenly. Then, the mutual movement of the spoiler plate 206 and the stirring frame 205 is driven to disturb the solution, forming a local flow disturbance phenomenon, further improving the uniformity of the mixing of hydrogen and the solution, ensuring that the reaction between hydrogen and the solution is more sufficient, reducing the waste of hydrogen, ensuring the concentration of the solution preparation, and improving the efficiency of the solution preparation.

[0030] Working principle: First, the raw materials to be reacted are added into the reactor 201, and then the pipeline for transporting external hydrogen is installed at the outer end of the gas inlet pipe and is connected to the gas inlet pipe. Hydrogen is introduced into the gas inlet pipe, and then the hydrogen inside the gas inlet pipe is introduced into the gas delivery pipe 204, and then flows into the air inlet cavity 217 through the air inlet pipe 207, and then is ejected into the solution through the upper through hole 218 and the lower through hole 219 to be mixed with the solution. The rotary motor 203 is started to drive the inner cylinder 202 to rotate, driving multiple stirring frames 205 and spoiler plates 206 to rotate, and using multiple stirring plates 216 to stir the solution inside the reactor 201 to mix hydrogen and the solution with each other.

[0031] While the stirring frame 205 is rotating, the bump 208 at the end of the sliding plate 210 will be mutually extruded with the top block 209 on the inner wall of the reaction kettle 201, prompting the sliding plate 210 to move closer to the center of the inner cylinder 202. Furthermore, a misalignment phenomenon will occur between the multiple upper through holes 218 at the upper end of the sliding plate 210 and the multiple lower through holes 219 at the lower end of the stirring frame 205, thereby reducing the diameter of the hydrogen gas ejection, increasing the flow rate of the hydrogen gas ejection. When the rapidly ejected hydrogen gas impinges on the surface of the spoiler plate 206, it will be collided to prompt the hydrogen gas to form a large number of small bubbles, thus reducing the volume of the hydrogen bubbles and increasing the contact area between the hydrogen gas and the solution. At the same time, when the sliding plate 210 moves, it will drive the wedge block 212 to be mutually extruded with the wedge plate 213, prompting the wedge plate 213 to drive the spoiler plate 206 to move downward. Furthermore, the distance between the spoiler plate 206 and the stirring frame 205 will increase, prompting the solution to rapidly gather between the stirring frame 205 and the spoiler plate 206, converging the solution to ensure that the ejected hydrogen bubbles are mixed with the solution to a greater extent.

[0032] When the bump 208 is disengaged from the mutual extrusion with the top block 209, the sliding plate 210 will drive the wedge block 212 to reset in the reverse direction, and the wedge block 212 will disengage from the downward extrusion of the wedge plate 213. Thus, the spoiler plate 206 will quickly move upward, further squeezing and dispersing the solution converged between the spoiler plate 206 and the stirring frame 205 to form a turbulent flow phenomenon of the solution, making the mixing of the hydrogen gas and the solution more uniform. At the same time, the provided reflux plate 215 prompts the solution extruded outward to form a reflux phenomenon under the blocking action of the reflux plate 215, further increasing the mixing degree of the hydrogen gas and the solution, ensuring that the mixing between the hydrogen gas and the solution is more sufficient, prompting the reaction between the two to be more sufficient, reducing the waste of hydrogen gas, ensuring the concentration of the solution preparation, improving the efficiency of the solution preparation, and finally flowing out through the discharge pipe for collection.

[0033] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A hydrogenation device for preparing 1,4-butanediol, comprising a support base (100), characterized in that: It further includes a reaction mechanism for stirring and mixing the solution, and the reaction mechanism is located above the support base (100); The reaction mechanism includes a reaction kettle (201) arranged above the support base (100). An inner cylinder (202) is rotatably installed inside the reaction kettle (201). The inner cylinder (202) is hollow. A plurality of groups of stirring frames (205) are fixedly arranged on the side wall of the inner cylinder (202) and are distributed up and down. Each group has three and is distributed around the center of the inner cylinder (202). A spoiler (206) is arranged below the stirring frame (205). A plurality of stirring plates (216) are arranged at the mutually remote ends of the spoiler (206) and the stirring frame (205). A rotary motor (203) is arranged above the reaction kettle (201). Pulley wheels are arranged at the output end of the rotary motor (203) and the upper end of the inner cylinder (202), and a transmission belt is connected between the two pulley wheels. A hydrogenation structure for hydrogenating the interior of the reaction solution is arranged between the stirring frame (205) and the inner cylinder (202).

2. The hydrogenation device for preparing 1,4-butanediol according to claim 1, characterized in that: The hydrogenation structure includes a gas transmission pipe (204) fixedly arranged inside the inner cylinder (202). The gas transmission pipe (204) passes through the bottom end of the inner cylinder (202). A base is arranged at the bottom end of the gas transmission pipe (204). The inner cylinder (202) is rotatably connected to the base. The base is fixed to the inner wall of the reaction kettle (201). An L-shaped gas adding pipe is installed at the bottom end of the base. The gas transmission pipe (204) is communicated with the gas adding pipe. A sliding plate (210) is slidably installed inside the stirring frame (205). A tension spring is connected between the sliding plate (210) and the inner wall of the stirring frame (205). An air inlet cavity (217) is arranged between the upper end of the sliding plate (210) and the stirring frame (205). An air inlet pipe (207) is connected between the upper end of the air inlet cavity (217) and the gas transmission pipe (204). A plurality of upper through holes (218) are formed on the surface of the sliding plate (210). A plurality of lower through holes (219) are formed at the lower end of the stirring frame (205). The lower through holes (219) are communicated with the upper through holes (218). A mixing structure for promoting the uniform mixing reaction of hydrogen and the solution is arranged between the stirring frame (205) and the spoiler (206).

3. A hydrogenation device for preparing 1,4-butanediol according to claim 2, characterized in that: The hybrid structure includes a wedge block (212) disposed at one end of the sliding plate (210) close to the inner cylinder (202). The spoiler plate (206) is slidably connected to the inner cylinder (202), and a baffle plate (214) is provided at the sliding end of the spoiler plate (206) and the inner cylinder (202). A wedge plate (213) is fixed to one end of the spoiler plate (206) close to the inner cylinder (202). A compression spring is connected between the bottom end of the spoiler plate (206) and the side wall of the inner cylinder (202). The mutually approaching sides of the wedge block (212) and the wedge plate (213) are both inclined planes and are in sliding fit. A convex block (208) is fixed to one end of the sliding plate (210) away from the inner cylinder (202). A top block (209) is provided on the inner wall of the reaction kettle (201) close to the convex block (208). The mutually approaching ends of the top block (209) and the convex block (208) are both arc surfaces and are in sliding fit.

4. A hydrogenation device for preparing 1,4-butanediol according to claim 3, characterized in that: The spoiler plate (206) is wavy.

5. A hydrogenation device for preparing 1,4-butanediol according to claim 4, characterized in that: A gas guide plate (211) is provided at one end of the air inlet cavity (217) close to the air inlet pipe (207).

6. A hydrogenation device for preparing 1,4-butanediol according to claim 5, characterized in that: Anti-flow plates (215) are fixed to both ends of the spoiler plate (206), and the included angle between the anti-flow plates (215) and the spoiler plate (206) is an obtuse angle.

7. A hydrogenation device for preparing 1,4-butanediol according to claim 6, characterized in that: A feed pipe is provided at the upper end of the support base (100), and a discharge pipe is provided at the lower end. Solenoid valves are provided on both the feed pipe and the discharge pipe.

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