Energy-saving n-propyl acetate production equipment

Abstract

The utility model discloses energy-saving n-propyl acetate production equipment which comprises a main body, a stirring cavity is formed in the main body, a heating cavity is formed in the outer side of the stirring cavity, an electric heating plate is arranged in the heating cavity, and the energy-saving n-propyl acetate production equipment further comprises a first transmission cavity which is formed in the upper end of the interior of the main body; first rotating rods are rotationally arranged on the two sides of the upper end in the first transmission cavity, second transmission cavities are formed in the two sides of the lower end in the main body, one ends of the first rotating rods penetrate through the stirring cavity and extend into the second transmission cavities, and the first rotating rods are rotationally connected with the second transmission cavities. When the energy-saving n-propyl acetate production equipment is used for stirring and mixing, liquid can be circulated and exchanged in a wider area, the layering phenomenon in the liquid can be broken through multidirectional flow, and acetic acid and n-propyl alcohol molecules are ensured to be fully contacted and mixed in a shorter time, so that the mixing uniformity is improved.

Description

Technical Field

[0001] This utility model relates to the field of n-propyl acetate production technology, specifically to an energy-saving n-propyl acetate production equipment. Background Technology

[0002] Propyl acetate, also known as propyl acetate or propyl acetate ester, is an important organic compound with the chemical formula C5H. 10 O2, with a molecular weight of 102.132, is a colorless liquid at room temperature and has a unique aroma. Therefore, it is widely used as a flavoring agent, food flavoring, and solvent for nitrocellulose. Propyl acetate is slightly soluble in water but readily soluble in organic solvents such as alcohols, ketones, esters, and oils. Propyl acetate is usually produced by mixing acetic acid and n-propanol and carrying out an esterification reaction under the catalysis of concentrated sulfuric acid.

[0003] Chinese Patent CN219540262U discloses an energy-saving n-propyl acetate production equipment, including a preheater. The preheater includes an inner tank, an outer tank, and a stirring mechanism. An electric heating wire is provided between the inner tank and the outer tank. The stirring mechanism agitates within the inner tank. A jacket is also provided outside the outer tank. A heat-conducting plate is provided on the top of the outer wall of the inner tank, extending into the jacket. A water-passing gap is provided between the outer edge of the heat-conducting plate and the inner wall of the jacket. A feed inlet is provided at the top of the jacket, and a discharge outlet is provided at the bottom of the inner tank. A conveying pump is also provided inside the jacket, which conveys the material from the jacket to the inner tank.

[0004] While the above solution addresses the issues of energy efficiency, effective heat utilization, and high heat transfer efficiency in existing technologies, the production equipment uses only a single shaft for stirring. Because the stirring power is concentrated on a single shaft, the flow of materials within the stirring chamber is limited, which can easily lead to over-mixing in some areas and under-mixing in others. In particular, the materials may be difficult to move effectively at the edges and bottom of the stirring chamber, forming "dead zones" that affect the mixing effect of acetic acid and n-propanol. Therefore, it does not meet the current requirements. To address this, we propose an energy-saving n-propyl acetate production equipment. Utility Model Content

[0005] The purpose of this invention is to provide an energy-saving n-propyl acetate production equipment to solve the problem mentioned in the background art that the energy-saving n-propyl acetate production equipment uses only a single-shaft agitator, resulting in poor mixing effect and affecting the mixing effect of acetic acid and n-propanol.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving n-propyl acetate production equipment, comprising a main body, wherein a stirring chamber is provided inside the main body, a heating chamber is provided outside the stirring chamber, and an electric heating plate is provided inside the heating chamber;

[0007] It also includes a first transmission cavity, which is opened at the upper end of the main body. A first rotating rod is rotatably arranged on both sides of the upper end of the first transmission cavity. A second transmission cavity is opened on both sides of the lower end of the main body. One end of the first rotating rod passes through the stirring cavity and extends into the interior of the second transmission cavity. The first rotating rod is rotatably connected to the second transmission cavity. The second transmission cavity is located on the outer wall of the stirring cavity and has four sets of equally spaced stirring blades welded on it. Each set of stirring blades has four blades welded on it at equal intervals.

[0008] It also includes a second rotating rod, which is rotatably disposed at the lower end inside the second transmission cavity, and three second rotating rods are rotatably disposed inside each second transmission cavity. One end of each second rotating rod passes through and extends into the interior of the stirring cavity. Four stirring rods are welded to the outer wall of the end of the second rotating rod located inside the stirring cavity in a ring and equidistantly distributed.

[0009] Preferably, a motor is provided at the upper end of the first transmission cavity, and the output end of the motor is connected to one of the first rotating rods via a coupling.

[0010] Preferably, the end of the first rotating rod located inside the first transmission cavity is connected by a transmission belt.

[0011] Preferably, a first transmission gear is provided on the outer wall of the first rotating rod at one end inside the second transmission cavity, and a second transmission gear is provided on the outer wall of the second rotating rod at one end inside the second transmission cavity, and the second transmission gear is meshed with the first transmission gear.

[0012] Preferably, a preheating cavity is provided on the outer side of the main body, and an infusion tube is provided at the lower end of one side of the preheating cavity, and the infusion tube extends to the outside of the main body.

[0013] Preferably, a plurality of heat-conducting plates are arranged in a ring at equal intervals between the preheating chamber and the heating chamber.

[0014] Preferably, a feed pipe is provided on the upper side of one side of the main body, and a discharge pipe is provided at the middle position of the lower end of the main body, with one end of both the feed pipe and the discharge pipe extending into the interior of the mixing chamber.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model has a first transmission chamber at the upper end of the main body. When acetic acid and n-propanol are stirred, the motor can be started. The motor will drive one of the first rotating rods to rotate. Under the transmission, the two first rotating rods can rotate synchronously. When the first rotating rods rotate, they will drive the stirring blades to rotate synchronously, thereby generating two stirring vortices. The two stirring vortices form an intertwined flow pattern in the stirring chamber, allowing the liquid to circulate and exchange in a wider area. This multi-directional flow helps to break the stratification phenomenon in the liquid and ensures that acetic acid and n-propanol molecules are fully contacted and mixed in a shorter time, thereby improving the uniformity of the mixture.

[0017] 2. This utility model has two second transmission cavities at the lower end of the main body. When the first rotating rod rotates, it drives the first transmission gear to rotate synchronously. Since the first transmission gear and the second transmission wheel mesh, each rotation of the first rotating rod will drive the three second rotating rods to rotate synchronously. The second rotating rods will drive the stirring rod to rotate synchronously. When the stirring rod rotates, it will generate a strong turbulence effect around it. This turbulence helps to break the boundaries between acetic acid and n-propanol molecules, allowing them to contact and mix more fully. The turbulence can also increase the collision frequency between molecules, thereby accelerating the diffusion process of the solute in the solvent, improving the uniformity and speed of mixing, and ensuring that the materials in all parts of the stirring cavity are fully stirred and mixed.

[0018] 3. This utility model features a preheating chamber on the outer side of the main body. Water can be added to the preheating chamber via an infusion pipe. When the electric heating plate is activated to heat the stirring chamber, the dissipated heat enters the preheating chamber through the heat-conducting plate, thereby heating the water in the preheating chamber. The water temperature in the preheating chamber gradually increases. The heated water can be replaced via the infusion pipe, thus achieving effective collection and reuse of dissipated heat, reducing unnecessary energy loss, and improving the overall energy efficiency of the system. The hot water in the preheating chamber can be used for preheating, heat preservation, or cleaning in other processes as needed, further reducing energy consumption costs in the production process. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a front view schematic diagram of the internal structure of this utility model;

[0021] Figure 3 This is a side view of the internal structure of this utility model;

[0022] Figure 4 This is a top view of the internal structure of this utility model;

[0023] Figure 5 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle.

[0024] In the diagram: 1. Main body; 2. Stirring chamber; 3. First transmission chamber; 4. Motor; 5. Transmission belt; 6. First rotating rod; 7. Stirring blade; 8. Second transmission chamber; 9. Second rotating rod; 10. Stirring rod; 11. Heating chamber; 12. Heating plate; 13. Preheating chamber; 14. Feed pipe; 15. Infusion pipe; 16. Heat-conducting plate; 17. Discharge pipe; 18. First transmission gear; 19. Second transmission gear. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: an energy-saving n-propyl acetate production equipment, including a main body 1, a stirring chamber 2 is provided inside the main body 1, a heating chamber 11 is provided outside the stirring chamber 2, and an electric heating plate 12 is provided inside the heating chamber 11.

[0027] It also includes a first transmission cavity 3, which is opened at the upper end inside the main body 1. A first rotating rod 6 is rotatably arranged on both sides of the upper end inside the first transmission cavity 3. A second transmission cavity 8 is opened on both sides of the lower end inside the main body 1. One end of the first rotating rod 6 passes through the stirring cavity 2 and extends into the interior of the second transmission cavity 8. The first rotating rod 6 is rotatably connected to the second transmission cavity 8. The second transmission cavity 8 is located on the outer wall of the stirring cavity 2 and has four sets of equally spaced stirring blades 7 welded on it. Each set of stirring blades 7 has four equally spaced stirring blades welded on it.

[0028] It also includes a second rotating rod 9, which is rotatably disposed at the lower end inside the second transmission cavity 8, and three second rotating rods 9 are rotatably disposed inside each second transmission cavity 8. One end of each second rotating rod 9 penetrates and extends into the interior of the stirring cavity 2. Four stirring rods 10 are welded to the outer wall of the end of the second rotating rod 9 inside the stirring cavity 2 in a ring and equidistant arrangement.

[0029] In use, the motor 4 is started, and the two first rotating rods 6 rotate synchronously using the transmission belt 5. The stirring blades 7 on the rotating rods form a vortex in the stirring chamber 2, which accelerates the mixing of acetic acid and n-propanol. At the same time, the first rotating rods 6 drive the first transmission gear 18, which drives the three second transmission gears 19 and the second rotating rods 9 through meshing, so that the stirring rod 10 assists in stirring the bottom of the stirring chamber 2, enhancing the uniformity of mixing. When heating, part of the heat generated by the heating plate 12 in the heating chamber 11 is transferred to the preheating chamber 13 through the heat conduction plate 16 to heat the water in it. The hot water can be flexibly replaced through the infusion pipe 15 to realize heat recovery and reuse, reducing energy consumption.

[0030] Please see Figure 2 and Figure 3 A motor 4 is installed at the upper end of the first transmission chamber 3, and the output end of the motor 4 is connected to one of the first rotating rods 6 through a coupling. The motor 4 provides power for the overall stirring.

[0031] Please see Figure 2 and Figure 3 The first rotating rod 6 is located inside the first transmission cavity 3 at one end, and is connected by a transmission belt 5. By utilizing the transmission characteristics of the transmission belt 5, the two first rotating rods 6 are rotated synchronously, thereby enhancing the uniformity and efficiency of stirring and avoiding the dead corners that may be caused by single stirring.

[0032] Please see Figure 5 The outer wall of the first rotating rod 6 located inside the second transmission cavity 8 is provided with a first transmission gear 18, and the outer wall of the second rotating rod 9 located inside the second transmission cavity 8 is provided with a second transmission gear 19. The second transmission gear 19 is meshed with the first transmission gear 18. Through the meshing connection between the second transmission gear 19 and the first transmission gear 18, the power of the first rotating rod 6 is transmitted to the second rotating rod 9, so that the stirring rod 10 can rotate synchronously, further improving the uniformity and depth of stirring, and ensuring that the material at the bottom and edge areas of the stirring cavity 2 can also be fully mixed.

[0033] Please see Figure 2 , Figure 3 and Figure 4 A preheating chamber 13 is provided on the outer side of the main body 1. A liquid infusion pipe 15 is provided at the lower end of one side of the preheating chamber 13 and extends to the outside of the main body 1. Water in the preheating chamber 13 can be easily added and replaced through the liquid infusion pipe 15, which realizes the effective collection and utilization of heat loss during the stirring process and improves energy utilization efficiency.

[0034] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5Several heat-conducting plates 16 are arranged in a ring at equal intervals between the preheating chamber 13 and the heating chamber 11. The heat-conducting plates 16 can efficiently transfer the heat in the heating chamber 11 to the preheating chamber 13, so that the water in the preheating chamber 13 can be heated rapidly. At the same time, the ring at equal intervals design ensures the uniformity of heat transfer and improves the efficiency of heat recovery.

[0035] Please see Figure 1 and Figure 2 A feed pipe 14 is provided on the upper side of one side of the main body 1, and a discharge pipe 17 is provided at the middle position of the lower end of the main body 1. One end of both the feed pipe 14 and the discharge pipe 17 extends into the interior of the mixing chamber 2. The feed pipe 14 can conveniently introduce raw materials into the mixing chamber 2, while the discharge pipe 17 can ensure that the uniformly mixed materials are discharged smoothly.

[0036] Working principle: During use, acetic acid and n-propanol are fed into the stirring chamber 2 through the feed pipe 14. The motor 4 is started, and the motor 4, through a coupling, causes one of the first rotating rods 6 to rotate synchronously. This first rotating rod 6, via the transmission belt 5, drives the other first rotating rod 6 to rotate synchronously, achieving synchronization between the two first rotating rods 6. The rotation of the first rotating rod 6 causes the stirring blades 7 to generate stirring vortices. These two stirring vortices ensure that the acetic acid and n-propanol molecules come into full contact and mix in a shorter time, thereby improving the uniformity of the mixture. The rotation of the first rotating rod 6 also drives the first transmission gear 18 in the second transmission chamber 8 to rotate synchronously. Since the first transmission gear 18 is meshed with the three second transmission gears 19, it drives the three second transmission gears 19 to rotate synchronously. The second transmission gears 19 then drive the second rotating rod 9 to rotate synchronously. When the second rotating rod 9 rotates, it drives the stirring rod 10 to stir the lower end of the mixing chamber 2, further improving the uniformity and speed of mixing. This ensures that the materials in all parts of the mixing chamber 2 are fully stirred and mixed, improving the mixing effect. During stirring and mixing, the electric heating plate 12 can be activated for heating. The heat dissipated by the electric heating plate 12 in the heating chamber 11 will be conducted to the preheating chamber 13. The operator can add water to the preheating chamber 13 in advance through the infusion pipe 15. The temperature of the water will rise due to the introduction of heat. The heated water can be replaced through the infusion pipe 15, thereby realizing the effective collection and reuse of heat dissipation. The hot water can be used for preheating, heat preservation or cleaning in other process links as needed, further reducing the energy consumption cost in the production process.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An energy-saving n-propyl acetate production equipment, comprising a main body (1), wherein a stirring chamber (2) is provided inside the main body (1), and a heating chamber (11) is provided outside the stirring chamber (2), wherein an electric heating plate (12) is provided inside the heating chamber (11), characterized in that: It also includes a first transmission cavity (3), which is opened at the upper end inside the main body (1). A first rotating rod (6) is rotatably arranged on both sides of the upper end inside the first transmission cavity (3). A second transmission cavity (8) is opened on both sides of the lower end inside the main body (1). One end of the first rotating rod (6) passes through the stirring cavity (2) and extends into the interior of the second transmission cavity (8). The first rotating rod (6) is rotatably connected to the second transmission cavity (8). The second transmission cavity (8) is located on the outer wall of the stirring cavity (2) and four sets of equally spaced stirring blades (7) are welded on each set of stirring blades (7). Four stirring blades (7) are welded on each set of stirring blades (7) at equal intervals. It also includes a second rotating rod (9), which is rotatably disposed at the lower end inside the second transmission cavity (8), and three second rotating rods (9) are rotatably disposed inside each second transmission cavity (8). One end of each second rotating rod (9) penetrates and extends into the interior of the stirring cavity (2). Four stirring rods (10) are welded to the outer wall of the end of the second rotating rod (9) located inside the stirring cavity (2).

2. The energy-saving n-propyl acetate production equipment according to claim 1, characterized in that: A motor (4) is provided at the upper end of the first transmission cavity (3), and the output end of the motor (4) is connected to one of the first rotating rods (6) through a coupling.

3. The energy-saving n-propyl acetate production equipment according to claim 1, characterized in that: The first rotating rod (6) is connected to the first transmission cavity (3) by a transmission belt (5) at one end.

4. The energy-saving n-propyl acetate production equipment according to claim 1, characterized in that: The first rotating rod (6) is provided with a first transmission gear (18) on the outer wall of one end inside the second transmission cavity (8), and the second rotating rod (9) is provided with a second transmission gear (19) on the outer wall of one end inside the second transmission cavity (8), and the second transmission gear (19) is meshed with the first transmission gear (18).

5. The energy-saving n-propyl acetate production equipment according to claim 1, characterized in that: A preheating chamber (13) is provided on the outer side of the main body (1), and an infusion tube (15) is provided at the lower end of one side of the preheating chamber (13), and the infusion tube (15) extends to the outside of the main body (1).

6. The energy-saving n-propyl acetate production equipment according to claim 5, characterized in that: A number of heat-conducting plates (16) are arranged in a ring at equal intervals between the preheating chamber (13) and the heating chamber (11).

7. The energy-saving n-propyl acetate production equipment according to claim 1, characterized in that: A feed pipe (14) is provided on the upper side of one side of the main body (1), and a discharge pipe (17) is provided at the middle position of the lower end of the main body (1). One end of the feed pipe (14) and the discharge pipe (17) both extend into the interior of the stirring chamber (2).

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