A methyl ester synthesis reactor stirring device

Abstract

The utility model discloses a kind of methyl ester synthesis reaction kettle stirring devices, belong to methyl ester synthesis equipment technical field, including reaction tank, three-phase asynchronous motor and flow rate control mechanism;Driving wheel of motor is engaged with bevel gear one and bevel gear two simultaneously, respectively drive the inner and outer two rotating columns of set and the rotation of connected blade, form double-layer three-dimensional stirring, flow rate control mechanism is sequentially driven by rotary valve drive connecting column, rotary ball disc, connecting disc and telescopic column, to control the rotation angle of flow restrictor in pipe passage limit plate.The utility model passes through double-layer three-dimensional stirring structure, solved the problem of insufficient stirring, low reaction efficiency;Through the flow rate control mechanism of accurate regulation and control, solved the problem that catalyst addition rate is difficult to control, easy to cause violent boiling, effectively guarantee production safety and improve product purity.

Description

Technical Field

[0001] This utility model relates to the technical field of methyl ester synthesis equipment, and in particular to a stirring device for a methyl ester synthesis reactor. Background Technology

[0002] Methyl esters, especially fatty acid methyl esters, are an important green energy source and a major component of biodiesel. Their industrial production involves esterification or transesterification reactions in a reactor.

[0003] During the reaction, in order to ensure sufficient contact between the oil, alcohol, and catalyst phases and improve mass transfer efficiency and reaction rate, a stirring device is installed in the reactor. Traditional stirring devices often use a single stirring shaft to drive single or multiple layers of similar impellers for stirring. However, this traditional stirring method has certain limitations. For reaction systems with high viscosity or large interfacial tension, a single stirring mode is difficult to form an ideal overall circulating flow field in the reactor, which can easily create dead zones in local areas, resulting in uneven mixing of materials, limited mass transfer efficiency, and consequently affecting the conversion rate and production efficiency of the reaction.

[0004] Furthermore, the method of catalyst addition is equally crucial to the reaction process and product quality. In industrial production, in order to control the start and rate of the reaction, the catalyst needs to be added in batches or continuously. Currently, the commonly used method is to use a feed pump or direct pouring. This method has weak control over the flow rate. When the catalyst is added too quickly or unevenly, it is easy to cause excessively high local catalyst concentration near the feed inlet, triggering a violent exothermic reaction, or even leading to dangerous reaction boiling. This not only threatens production safety but also easily causes catalytic side reactions, thereby reducing the purity and yield of the final product.

[0005] Therefore, this invention proposes a stirring device for a methyl ester synthesis reactor to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems of insufficient mixing, low reaction efficiency, and difficulty in accurately controlling the catalyst addition rate in the existing methyl ester synthesis reactor stirring device, this utility model aims to provide a methyl ester synthesis reactor stirring device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a stirring device for a methyl ester synthesis reactor, including a reaction vessel, a three-phase asynchronous motor, a drive wheel, a first helical gear, a second helical gear, a first rotating column, a second blade, a second rotating column, and a first blade; it also includes a flow rate control mechanism connected to the side wall of the reaction vessel.

[0008] The flow rate control mechanism includes a feeding cylinder, a through pipe connected to the bottom of the feeding cylinder, a flow restrictor plate rotatably disposed in the through pipe, and a rotary valve for driving the flow restrictor plate to rotate.

[0009] Furthermore, the output shaft of the three-phase asynchronous motor is fixedly connected to a drive wheel, which meshes with both helical gear one and helical gear two. Helical gear one is coaxially and fixedly connected to a rotating column extending into the reaction vessel, and blade two is fixedly connected to the bottom end of rotating column one. Helical gear two is coaxially and fixedly connected to a rotating column two sleeved outside rotating column one, and blade one is fixedly connected to the end of rotating column two, thus forming a double-layer three-dimensional stirring system. The rotary valve is connected in sequence through the connecting column, rotating ball plate, connecting plate, and telescopic column to control the rotation angle of the flow restrictor plate in the pipe, thereby achieving precise regulation of the material flow rate.

[0010] Preferably, the bottom of the reaction vessel is fixedly connected with several support columns; the top of the reaction vessel is provided with a pad, on which a three-phase asynchronous motor is mounted and fixed; a fixing frame is also provided on one side of the pad to provide a stable installation platform for the entire device.

[0011] Preferably, a stabilizer is fixedly connected to the outer wall of the three-phase asynchronous motor. The stabilizer is used to support the shafts of helical gear one and helical gear two to ensure the stability of the gear transmission system under high-speed operation.

[0012] Preferably, to achieve smooth and efficient vertical power steering, the drive wheel, helical gear one, and helical gear two are all bevel gears.

[0013] Preferably, the flow rate control mechanism also includes a support base, with the feeding cylinder fixed to the top of the support base, which in turn is fixedly installed on the outer wall of the reaction vessel, ensuring the secure installation of the flow rate control mechanism.

[0014] Preferably, to facilitate the installation and operation of the rotary valve, a fixing post is fixedly connected to the top of the pipe, and the rotary valve is rotatably installed inside the fixing post. Preferably, to form a precise transmission chain, one end of the connecting column is fixedly connected to the rotary valve, and the other end is fixedly connected to a rotating ball disc. The rotating ball disc slides against the top of the connecting disc, achieving smooth rotation. The bottom of the connecting disc is then connected to the flow-limiting plate via a telescopic column, precisely transmitting manual rotation operations to the flow-limiting plate.

[0015] This utility model has the following beneficial effects: 1. This utility model solves the problem of uneven mixing and low reaction efficiency caused by single-layer stirring in existing methyl ester synthesis reactors by setting up a dual-shaft stirring structure in which a drive wheel driven by a single motor simultaneously meshes with helical gear one and helical gear two, and drives blades of different levels to rotate and stir. It achieves the technical effect of all-round, efficient and three-dimensional stirring of materials, thereby significantly accelerating the reaction rate.

[0016] 2. This utility model solves the problems of crude catalyst addition methods, difficulty in accurately controlling the rate, and easy occurrence of reaction boiling and side reactions in the prior art by setting a flow rate control mechanism consisting of a rotary valve, a transmission component, and a flow limiting plate. It achieves the technical effect of accurately controlling the catalyst flow rate, effectively avoiding dangerous working conditions, ensuring production safety, and improving product purity.

[0017] 3. This utility model solves the problem of instability caused by vibration when the stirring device is running at high speed by adding a stabilizing frame to the outer wall of the three-phase asynchronous motor to support the gear transmission system, thus achieving the technical effect of ensuring long-term stable and reliable operation of the equipment. Attached Figure Description

[0018] Figure 1 This is a front perspective view of a stirring device for a methyl ester synthesis reactor proposed in this utility model; Figure 2 This is a partial structural diagram of the stabilizer frame of the stirring device for a methyl ester synthesis reactor proposed in this utility model; Figure 3 This is a partial structural diagram of the through-pipe of the stirring device for a methyl ester synthesis reactor proposed in this utility model; Figure 4 This is a partial structural diagram of the rotary valve of the stirring device for a methyl ester synthesis reactor proposed in this utility model.

[0019] Legend: 1. Reaction vessel; 2. Flow control mechanism; 201. Support base; 202. Feeding cylinder; 203. Through pipe; 204. Fixed column; 205. Rotary valve; 206. Connecting column; 207. Rotating ball disc; 208. Connecting disc; 209. Telescopic column; 210. Flow limiting plate; 3. Support column; 4. Pad plate; 5. Fixing frame; 6. Three-phase asynchronous motor; 7. Drive wheel; 8. Helical gear one; 9. Helical gear two; 10. Stabilizing frame; 11. Rotating column one; 12. Rotating column two; 13. Blade one; 14. Blade two. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of 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] Example: Please refer to Figures 1 to 4 This utility model provides a stirring device for a methyl ester synthesis reactor. The stirring device includes a reaction vessel 1, with several support columns 3 fixedly connected to the bottom of the reaction vessel 1. A pad 4 is provided on the top of the reaction vessel 1. A three-phase asynchronous motor 6 is mounted and fixed on the pad 4. A fixing frame 5 is also provided on one side of the pad 4. A drive wheel 7 is fixedly connected to the output shaft of the three-phase asynchronous motor 6. The drive wheel 7 meshes with a helical gear 1 8 and a helical gear 2 9. The helical gear 1 8 is coaxially fixedly connected to a rotating column 11 extending into the reaction vessel 1, and the helical gear 2 9 is coaxially fixedly connected to a rotating column 2 12 sleeved outside the rotating column 11. The bottom end of the rotating column 11 is fixedly connected to blade 14, and the end of the rotating column 12 that extends into the reaction vessel 1 is fixedly connected to blade 13; a stabilizer 10 is fixedly connected to the outer wall of the three-phase asynchronous motor 6, and the stabilizer 10 is used to support the rotating shafts of helical gear 8 and helical gear 9; the device also includes a flow rate control mechanism 2 that communicates with the side wall of the reaction vessel 1, and the flow rate control mechanism 2 is used to controllably add materials into the reaction vessel 1. The stirring device of the methyl ester synthesis reactor also includes a flow rate control mechanism 2 that communicates with the side wall of the reaction vessel 1, and the components inside the flow rate control mechanism 2 form a specific transmission connection relationship.

[0022] Please refer to Figure 2 , Figure 3 and Figure 4 The flow rate control mechanism 2 includes a support base 201, which is fixedly installed on the outer wall of the reaction vessel 1; a feeding cylinder 202 is fixed to the top of the support base 201, and a through pipe 203 is connected to the bottom of the feeding cylinder 202; a fixed column 204 is fixedly connected to the top of the through pipe 203, and a rotary valve 205 is rotatably installed in the fixed column 204; the rotary valve 205 drives a flow limiting plate 210 rotatably disposed in the through pipe 203 through a transmission assembly; specifically, one end of the connecting column 206 is fixedly connected to the rotary valve 205, and the other end of the connecting column 206 is fixedly connected to a rotating ball plate 207; The rotating ball plate 207 slides against the top of the connecting plate 208, and the bottom of the connecting plate 208 is connected to the flow restrictor plate 210 via the telescopic column 209. This structure, which sequentially drives the connecting column 206, the rotating ball plate 207, the connecting plate 208, and the telescopic column 209 through the rotating valve 205, and finally controls the rotation angle of the flow restrictor plate 210, ensures that the operator can accurately and stably adjust the flow rate of the material entering the reaction tank 1.

[0023] In a preferred embodiment, in order to provide a stable and reliable installation foundation, the bottom of the reaction vessel 1 is fixedly connected with several support columns 3; the top of the reaction vessel 1 is provided with a pad 4, a three-phase asynchronous motor 6 is installed and fixed on the pad 4, and a fixing frame 5 is also provided on one side of the pad 4.

[0024] Furthermore, in order to enhance the operational stability of the gear transmission system, a stabilizer 10 is fixedly connected to the outer wall of the three-phase asynchronous motor 6. The stabilizer 10 is used to support the shafts of helical gear 8 and helical gear 9.

[0025] As a specific transmission structure, in order to achieve efficient vertical power transmission, the drive wheel 7, helical gear 1 8, and helical gear 2 9 are all bevel gears.

[0026] As a preferred installation structure, in order to securely install the flow control mechanism 2, it also includes a support base 201, which is fixedly installed on the outer wall of the reaction vessel 1, and the feed cylinder 202 is fixed to the top of the support base 201.

[0027] Furthermore, to facilitate the installation and operation of the rotary valve 205, a fixed post 204 is fixedly connected to the top of the through pipe 203, and the rotary valve 205 is rotatably installed in the fixed post 204.

[0028] In order to achieve precise transmission from the rotary valve 205 to the flow restrictor 210, as a preferred transmission structure, one end of the connecting column 206 is fixedly connected to the rotary valve 205, and the other end of the connecting column 206 is fixedly connected to the rotating ball plate 207; the rotating ball plate 207 slides against the top of the connecting plate 208 to achieve smooth transmission of rotational force; furthermore, the bottom of the connecting plate 208 is connected to the flow restrictor 210 through the telescopic column 209, which converts the rotational motion into control of the opening and closing angle of the flow restrictor 210.

[0029] Working principle: At the bottom of the reaction vessel 1, there is a support column 3 for fixing, and a pad 4 on top. Next to the pad 4, there is a fixing frame 5. Start the three-phase asynchronous motor 6 located on the pad 4. The three-phase asynchronous motor 6 drives the drive wheel 7 to rotate. The drive wheel 7 will simultaneously drive the helical gear 1 8 and the helical gear 2 9 to rotate together. At this time, the helical gear 1 8 drives the rotating column 11 to rotate. The rotating column 11 will drive the blade 2 14 at the bottom to rotate and stir. Similarly, the helical gear 2 9 will drive the rotating column 2 12 to rotate. The rotating column 2 12 carries the blade 13 to rotate and stir. There is a stabilizing frame 10 on the outer wall of the three-phase asynchronous motor 6, which can ensure the stable operation of the device. This stirring method can make it fully stirred and speed up the stirring speed. A flow rate control mechanism 2 is connected to the right side of the reaction vessel 1. The flow rate control mechanism 2 includes a support base 201, and a feeding cylinder 202 is located at the top of the support base 201. The catalyst flows from the feeding cylinder 202 into the reaction vessel 1 through a through pipe 203. At the top of the through pipe 203 is a fixed column 204, and inside the fixed column 204 is a rotary valve 205. When it is necessary to adjust the catalyst inflow rate, the rotary valve 205 is rotated. The rotary valve 205 rotates the connecting column 206, causing the rotating ball plate 207 at the bottom of the connecting column 206 to slide on the top of the connecting plate 208, thereby controlling the rotation of the connecting plate 208. The bottom of the connecting plate 208 is connected to the flow restrictor 210 through a telescopic column 209, which can then control the rotation of the flow restrictor 210, thereby limiting the flow rate of the catalyst. This can effectively prevent the reaction from boiling over, ensure production safety, improve product purity, and reduce the occurrence of side reactions.

Claims

1. A stirring device for a methyl ester synthesis reactor, comprising: Reaction vessel (1); A three-phase asynchronous motor (6) is installed on the top of the reaction vessel (1), and the output shaft of the three-phase asynchronous motor (6) is fixedly connected to a drive wheel (7). Helical gear one (8) and helical gear two (9) mesh with the drive wheel (7); A rotating column (11) is fixedly connected to the helical gear (8) on the same axis and extends into the reaction vessel (1). The bottom end of the rotating column (11) is fixedly connected to a blade (14). Rotating column two (12) is coaxially fixedly connected to the helical gear two (9) and sleeved outside the rotating column one (11). The end of the rotating column two (12) extending into the reaction vessel (1) is fixedly connected to blade one (13). The device is characterized in that it further includes a flow rate control mechanism (2) communicating with the side wall of the reaction vessel (1). The flow rate control mechanism (2) includes a feeding cylinder (202), a through pipe (203) communicating with the bottom of the feeding cylinder (202), a flow limiting plate (210) rotatably disposed in the through pipe (203), and a rotary valve (205) for driving the flow limiting plate (210) to rotate. The rotary valve (205) is connected in sequence via a connecting column (206), a rotating ball disc (207), a connecting disc (208), and a telescopic column (209) to control the rotation angle of the flow restrictor (210) within the through pipe (203).

2. The stirring device for a methyl ester synthesis reactor according to claim 1, characterized in that, The bottom of the reaction vessel (1) is fixedly connected with several support columns (3), and the top of the reaction vessel (1) is provided with a pad (4). The three-phase asynchronous motor (6) is installed and fixed on the pad (4), and a fixing frame (5) is also provided on one side of the pad (4).

3. The stirring device for a methyl ester synthesis reactor according to claim 1, characterized in that, A stabilizer (10) is fixedly connected to the outer wall of the three-phase asynchronous motor (6), and the stabilizer (10) is used to support the shafts of the first helical gear (8) and the second helical gear (9).

4. The stirring device for a methyl ester synthesis reactor according to claim 1, characterized in that, The drive wheel (7), the first helical gear (8), and the second helical gear (9) are all bevel gears.

5. The stirring device for a methyl ester synthesis reactor according to claim 1, characterized in that, The flow rate control mechanism (2) also includes a support base (201), the feeding cylinder (202) is fixed to the top of the support base (201), and the support base (201) is fixedly installed on the outer wall of the reaction vessel (1).

6. The stirring device for a methyl ester synthesis reactor according to claim 1, characterized in that, The top of the pipe (203) is fixedly connected to a fixed column (204), and the rotary valve (205) is rotatably installed inside the fixed column (204).

7. The stirring device for a methyl ester synthesis reactor according to claim 1, characterized in that, One end of the connecting column (206) is fixedly connected to the rotary valve (205), and the other end of the connecting column (206) is fixedly connected to the rotating ball disk (207), which slides against the top of the connecting disk (208).

8. The stirring device for a methyl ester synthesis reactor according to claim 7, characterized in that, The bottom of the connecting plate (208) is connected to the flow limiting plate (210) via the telescopic column (209).

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