Cooling device for producing methyl acetate

Abstract

The utility model discloses a cooling device for producing methyl acetate, relates to the technical field of methyl acetate production, and solves the technical problems that the water-cooling heat exchange cooling effect of methyl acetate is poor, and the heat exchange cooling efficiency is influenced. Comprising a cooling tank, the top of the cooling tank is provided with a flow dividing disc of a hollow structure, the top of the flow dividing disc communicates with a feeding pipe, the bottom of the flow dividing disc communicates with a plurality of evenly-distributed heat exchange pipes, the bottom of the cooling tank is connected with a base plate, the base plate communicates with a discharging pipe, and the heat exchange pipes penetrate through the cooling tank and extend into the base plate; a plurality of evenly-distributed first partition plates are installed in the cooling tank and divide the cooling tank into a plurality of cooling cavities, and second partition plates are installed on the inner cavity walls, close to the top ends, of the cooling cavities. Cold water can conveniently and continuously flow along the outer pipe wall of the methyl acetate heat exchange pipe, the heat exchange efficiency can be improved, and therefore the cooling effect of methyl acetate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of methyl acetate production, in particular to a cooling and temperature reduction device for producing methyl acetate. Background Art

[0002] Methyl acetate is an organic compound, a colorless, transparent liquid with a unique aroma of esters. Methyl acetate is volatile and flammable, with a boiling point of 56.8°C and a melting point of -98.1°C. It is easily soluble in organic solvents such as alcohol and ether, and can be mixed with general hydrocarbon solvents. Methyl acetate is flammable, and its vapor can form an explosive mixture with air. Under high temperature conditions, methyl acetate is more likely to burn or explode. Therefore, in order to reduce safety risks, it needs to be cooled.

[0003] At present, methyl acetate is mostly cooled by water cooling, specifically, cooling water is circulated into the cooling tank, and then a heat exchange tube is set in the cooling tank for methyl acetate to flow, so as to achieve heat exchange and cooling. However, this method still has the following defects:

[0004] In the process of cooling and heat exchange, only the cold water near the heat exchange tube can directly and effectively exchange heat. However, the cold water in the cooling tank that is far away from the heat exchange tube has a poor heat exchange effect due to the distance, which not only affects the cooling effect, but also affects the efficiency of heat exchange and cooling. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a cooling and cooling device for producing methyl acetate, which solves the problem that the water cooling heat exchange and cooling effect of methyl acetate is poor, affecting the heat exchange and cooling efficiency.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the utility model, a cooling and temperature reduction device for producing methyl acetate is provided, comprising a cooling tank, a diverter plate with a hollow structure is installed on the top of the cooling tank, a feed pipe is connected to the top of the diverter plate, a plurality of evenly distributed heat exchange tubes are connected to the bottom of the diverter plate, a bottom of the cooling tank is connected to a bottom plate, and a discharge pipe is connected to the bottom plate, the heat exchange tube runs through the cooling tank and extends into the bottom plate, a plurality of evenly distributed first partitions are installed in the cooling tank, the first partitions divide the cooling tank into a plurality of cooling chambers, and a second partition is installed on the inner cavity wall of the cooling chamber near the top, the second partition divides the cooling chamber into a water injection chamber and a heat exchange chamber from top to bottom in sequence, and a drainage component is installed between the second partition and the heat exchange tube;

[0007] The drainage assembly includes a plurality of fins installed on the outer tube wall of the heat exchange tube, the plurality of fins are evenly distributed in a ring shape, a notch is penetrated through the second partition plate between two adjacent fins, and the notch corresponds to the outer tube wall of the heat exchange tube.

[0008] As a further technical solution of the utility model, an annular baffle is provided in the chassis, the top of the annular baffle is in contact with the bottom ends of multiple heat exchange tubes, a U-shaped rod connected to the annular baffle is slid through the bottom of the chassis, and a driving member for driving the U-shaped rod to rise and fall is installed on the chassis.

[0009] As a further technical solution of the utility model, a T-shaped water inlet pipe and an L-shaped water outlet pipe are respectively arranged on both sides of the cooling tank, the T-shaped water inlet pipe is connected to a water inlet branch pipe connected to the water injection chamber, the L-shaped water outlet pipe is connected to a water outlet branch pipe connected to the heat exchange chamber, and the water outlet branch pipe is connected at the bottom end of the heat exchange chamber.

[0010] As a further technical solution of the utility model, the driving member includes a cylinder, and an electric control component for controlling the intermittent lifting and lowering of the cylinder is installed on the cooling tank.

[0011] As a further technical solution of the utility model, the electric control component includes a controller and a timer, and the controller and the timer are installed on the outer wall of the cooling tank through an arc plate, and the controller is electrically connected to the timer and the cylinder through wires.

[0012] As a further technical solution of the utility model, a bellows is sleeved on the U-shaped rod located in the chassis, the top end of the bellows is connected to the annular baffle, and the bottom end of the bellows is connected to the inner lower surface of the chassis.

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

[0014] 1. In the utility model, the methyl acetate entering the cooling tank is conveniently diverted through a plurality of heat exchange tubes by means of a diverter plate, the cooling tank is conveniently divided into a plurality of cooling chambers by means of a plurality of first partitions, and the cooling chamber is conveniently divided into a water injection chamber and a heat exchange chamber in sequence by means of a second partition, so that cold water can enter each water injection chamber at the same time, ensuring that there will be no large temperature difference in the cold water entering each water injection chamber, which is conducive to achieving uniform heat exchange, and the cold water can be made to flow continuously through the outer tube wall of the heat exchange tube by means of a drainage component, thereby achieving high-efficiency heat exchange and improving the cooling effect.

[0015] 2. In the utility model, the driving member is conveniently controlled by the electronic control component to drive the annular baffle to intermittently reciprocate and lift, so that when the annular baffle is in contact with the heat exchange tube, the methyl acetate in the heat exchange tube cannot fall smoothly, thereby extending the heat exchange time and improving the cooling effect. After the cooling time is appropriate, the annular baffle descends, which facilitates the smooth discharge of the methyl acetate in the heat exchange tube after the temperature has been lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of a cooling and temperature reduction device for producing methyl acetate according to the utility model;

[0017] Figure 2 This is a schematic structural diagram of a cooling and temperature reduction device for producing methyl acetate according to the utility model;

[0018] Figure 3 It is a schematic diagram of the top view of the connecting portion between the heat exchange tube and the second partition plate in a cooling and temperature reduction device for producing methyl acetate according to the utility model;

[0019] Figure 4 for Figure 3 Enlarged view of part A.

[0020] In the figure: 1. cooling tank; 2. diverter plate; 3. feed pipe; 4. heat exchange tube; 5. chassis; 6. discharge pipe; 7. first baffle; 8. second baffle; 9. fin; 10. notch; 11. annular baffle; 12. U-shaped rod; 13. driving member; 14. T-shaped water inlet pipe; 15. L-shaped water outlet pipe; 16. controller; 17. timer; 18. bellows. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-4 As shown, a cooling and temperature reduction device for producing methyl acetate comprises a cooling tank 1, a diverter plate 2 with a hollow structure is installed on the top of the cooling tank 1, a feed pipe 3 is connected to the top of the diverter plate 2, a plurality of evenly distributed heat exchange tubes 4 are connected to the bottom of the diverter plate 2, a bottom of the cooling tank 1 is connected to a bottom plate 5, and a discharge pipe 6 is connected to the bottom plate 5, the heat exchange tube 4 passes through the cooling tank 1 and extends into the bottom plate 5, a plurality of evenly distributed first partitions 7 are installed in the cooling tank 1, the first partitions 7 divide the cooling tank 1 into a plurality of cooling chambers, and a second partition 8 is installed on the inner cavity wall of the cooling chamber near the top, the second partition 8 divides the cooling chamber into a water injection chamber and a heat exchange chamber from top to bottom in sequence.

[0023] A T-shaped water inlet pipe 14 and an L-shaped water outlet pipe 15 are respectively arranged on both sides of the cooling tank 1. The T-shaped water inlet pipe 14 is used to introduce cooling water, and the L-shaped water outlet pipe 15 is used to discharge the water after heat exchange. The T-shaped water inlet pipe 14 is connected to a water inlet branch pipe connected to the water injection chamber to ensure that there will be no large temperature difference in the cold water entering each water injection chamber. The L-shaped water outlet pipe 15 is connected to a water outlet branch pipe connected to the heat exchange chamber, and the water outlet branch pipe is connected at the bottom end of the heat exchange chamber to facilitate the discharge of the water after heat exchange in each heat exchange chamber.

[0024] A drainage component is installed between the second partition 8 and the heat exchange tube 4. The drainage component includes multiple fins 9 installed on the outer tube wall of the heat exchange tube 4, which is beneficial to increase the heat exchange area and improve the heat exchange efficiency. The multiple fins 9 are evenly distributed in a ring shape. A notch 10 is opened through the second partition 8 between two adjacent fins 9, which is convenient for the cold water in the water injection cavity to flow down through the notch 10, and the notch 10 corresponds to the outer tube wall of the heat exchange tube 4. The two adjacent fins 9 cooperate with the outer tube wall of the heat exchange tube 4 to form a channel for the flow of cold water, so that the cold water in the water injection cavity can continue to flow along the outer tube wall of the heat exchange tube 4 after falling through the notch 10, thereby realizing high-efficiency heat exchange.

[0025] An annular baffle 11 is provided in the chassis 5, the top of the annular baffle 11 is fitted with the bottom ends of the plurality of heat exchange tubes 4, a U-shaped rod 12 connected to the annular baffle 11 is slidably penetrated through the bottom of the chassis 5, a bellows 18 is sleeved on the U-shaped rod 12 located in the chassis 5, the top end of the bellows 18 is connected to the annular baffle 11, and the bottom end of the bellows 18 is connected to the inner lower surface of the chassis 5 to ensure the sealing of the sliding connection, and a driving member 13 for driving the U-shaped rod 12 to rise and fall is installed on the chassis 5, and the driving member 13 includes a cylinder;

[0026] An electric control component for controlling the intermittent lifting and lowering of the cylinder is installed on the cooling tank 1. The electric control component includes a controller 16 and a timer 17. The controller 16 and the timer 17 are installed on the outer wall of the cooling tank 1 through an arc plate. The controller 16 is electrically connected to the timer 17 and the cylinder through wires.

[0027] The working principle of the utility model is as follows: the methyl acetate to be cooled enters the diverter plate 2 through the feed pipe 3, and then is diverted along a plurality of heat exchange tubes 4, and cold water is introduced into the T-shaped water inlet pipe 14. The cold water can be introduced into each water injection cavity through a plurality of water inlet branches, and then the cold water falls through the notch 10, and flows along the outer tube wall of the heat exchange tube 4 between two adjacent fins 9, so that the outer tube wall of the heat exchange tube 4 has continuously flowing cold water. At the same time, the timer 17 can set the time as needed, and cooperate with the controller 16 to realize the intermittent lifting and lowering of the driving member 13, so that after the annular baffle 11 is separated from the heat exchange tube 4, the cooled methyl acetate automatically flows into the bottom plate 5 and is discharged from the discharge pipe 6.

[0028] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A cooling device for producing methyl acetate, comprising a cooling tank (1), characterized in that: A hollow-structured diverter plate (2) is installed on the top of the cooling tank (1), a feed pipe (3) is connected to the top of the diverter plate (2), a plurality of evenly distributed heat exchange tubes (4) are connected to the bottom of the diverter plate (2), a bottom of the cooling tank (1) is connected to a base plate (5), and a discharge pipe (6) is connected to the base plate (5), the heat exchange tube (4) passes through the cooling tank (1) and extends into the base plate (5), a plurality of evenly distributed first partitions (7) are installed in the cooling tank (1), the first partitions (7) divide the cooling tank (1) into a plurality of cooling chambers, and a second partition (8) is installed on the inner cavity wall of the cooling chamber near the top, the second partition (8) divides the cooling chamber into a water injection chamber and a heat exchange chamber from top to bottom in sequence, and a drainage component is installed between the second partition (8) and the heat exchange tube (4); The drainage assembly comprises a plurality of fins (9) mounted on the outer tube wall of the heat exchange tube (4), the plurality of fins (9) being evenly distributed in a ring shape, a notch (10) penetrating through the second partition plate (8) between two adjacent fins (9), and the notch (10) corresponding to the outer tube wall of the heat exchange tube (4).

2. A cooling and temperature reduction device for producing methyl acetate according to claim 1, characterized in that: An annular baffle (11) is provided inside the chassis (5), the top of the annular baffle (11) is in contact with the bottom ends of the plurality of heat exchange tubes (4), a U-shaped rod (12) connected to the annular baffle (11) is slidably penetrated through the bottom of the chassis (5), and a driving member (13) for driving the U-shaped rod (12) to rise and fall is installed on the chassis (5).

3. A cooling and temperature reduction device for producing methyl acetate according to claim 1, characterized in that: A T-shaped water inlet pipe (14) and an L-shaped water outlet pipe (15) are respectively arranged on both sides of the cooling tank (1); the T-shaped water inlet pipe (14) is connected to a water inlet branch pipe connected to the water injection chamber; the L-shaped water outlet pipe (15) is connected to a water outlet branch pipe connected to the heat exchange chamber, and the water outlet branch pipe is connected to the bottom end of the heat exchange chamber.

4. A cooling and temperature reduction device for producing methyl acetate according to claim 2, characterized in that: The driving member (13) comprises a cylinder, and an electric control component for controlling the intermittent lifting and lowering of the cylinder is installed on the cooling tank (1).

5. A cooling and temperature reduction device for producing methyl acetate according to claim 4, characterized in that: The electric control component comprises a controller (16) and a timer (17). The controller (16) and the timer (17) are mounted on the outer wall of the cooling tank (1) via an arc plate. The controller (16) is electrically connected to the timer (17) and the cylinder via wires.

6. A cooling and temperature reduction device for producing methyl acetate according to claim 2, characterized in that: A bellows (18) is sleeved on the U-shaped rod (12) located inside the chassis (5), the top end of the bellows (18) is connected to the annular baffle (11), and the bottom end of the bellows (18) is connected to the inner lower surface of the chassis (5).

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