Distillation and condensation device for battery-grade ethyl acetate

Abstract

The utility model relates to the technical field of ethyl acetate preparation, in particular to a distillation condensing device for battery-grade ethyl acetate. The utility model provides a battery grade ethyl acetate distillation condensing device which comprises a cooling box, a partition plate is arranged in the cooling box and divides the cooling box into a left cavity and a right cavity, the left cavity is provided with a spiral liquid pump, the right cavity is provided with a condensation pipe I and a condensation pipe II, one end of the condensation pipe I is connected with an external distillation device, and the other end of the condensation pipe II is connected with a condenser. The other end of the first condensation pipe penetrates through the partition plate and communicates with the left cavity. According to the device disclosed by the utility model, heat energy in cold air heated in the cooling box is transferred to circulating water through the waste heat utilization assembly, and then the heat energy is used for heating mixed liquid in the product tank I, so that the originally wasted heat energy is effectively utilized, further evaporation of diethyl ether is promoted, a subsequent separation process is simplified, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ethyl acetate preparation, in particular to a distillation and condensation device for battery-grade ethyl acetate. Background Art

[0002] In the industrial production process of ethyl acetate, purification by distillation is a common key step. Since the boiling point of ethyl acetate is about 77 degrees Celsius, while the boiling point of its main byproduct ether is only about 34.6 degrees Celsius, there is a significant difference in boiling points between the two during the distillation process. In the process of condensing the high-temperature distillation gas into liquid, the accompanying ether will also condense in the traditional distillation condensation device, and further distillation is required to separate the ether. In addition, the large amount of heat energy released during the condensation process is often directly discharged into the environment and cannot be effectively utilized, resulting in a large amount of energy waste. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a distillation and condensation device for battery-grade ethyl acetate.

[0004] The technical solution is as follows: A distillation and condensation device for battery-grade ethyl acetate, comprising a cooling box, a spiral liquid pump, condenser tube one and condenser tube two, wherein a partition is provided in the cooling box, and the partition divides the cooling box into two left and right chambers, wherein the left chamber is provided with the spiral liquid pump, and the right chamber is provided with the condenser tube one and the condenser tube two, one end of the condenser tube one is connected to an external distillation device, and the other end of the condenser tube one passes through the partition and is connected to the left chamber, the top of the cooling box is connected to the product tank one through an infusion channel, one end of the condenser tube two is connected to the product tank two, and the other end is connected to the top of the product tank one, and a waste heat utilization component is connected between the cooling box and the product tank one.

[0005] Preferably, an air inlet is provided at the lower portion of the right chamber of the cooling box, and an air outlet is provided at the upper portion of the right chamber of the cooling box.

[0006] Preferably, the spiral liquid pump includes a belt assembly, the spiral liquid pump is connected to an impeller via the belt assembly, and the impeller is rotatably arranged on the upper part of the right chamber of the cooling box.

[0007] Preferably, the waste heat utilization component includes a circulating water pipe and a circulating water pump, one end of the circulating water pipe is connected to the upper part of the right chamber of the cooling box, the other end of the circulating water pipe is connected to the product tank one, the circulating water pipe is connected to the circulating water pump, and the circulating water pump is installed on the upper outer side of the product tank one.

[0008] Preferably, the portion of the circulating water pipe located in the cooling box is a heat absorption end, and the portion of the circulating water pipe located in the product tank 1 is a heating end.

[0009] Preferably, a heating rod and a thermometer are also included. A heating rod is installed on the top of the product tank one, and a thermometer is connected to the top of the product tank one.

[0010] The beneficial effects of the utility model are as follows: the utility model transfers the heat energy in the heated cold air in the cooling box to the circulating water through the waste heat utilization component, and then uses this part of the heat energy to heat the mixed liquid in the product tank one, which not only effectively utilizes the heat energy that was originally wasted, but also promotes the further evaporation of ether, simplifies the subsequent separation process, and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0012] Figure 2 It is a three-dimensional structural sectional view of the cooling box of the utility model.

[0013] Figure 3 It is a three-dimensional structural schematic diagram of the spiral liquid pump, impeller and belt assembly of the utility model.

[0014] Figure 4 It is a three-dimensional structural sectional view of a product tank of the utility model.

[0015] Figure 5 It is a three-dimensional structural schematic diagram of the circulating water pipe and circulating water pump of the utility model.

[0016] Figure numbers: 1-cooling box, 101-air inlet, 102-air outlet, 103-infusion channel, 104-partition, 2-spiral liquid pump, 3-impeller, 4-belt assembly, 5-condenser tube one, 6-condenser tube two, 7-circulating water pipe, 8-circulating water pump, 9-product tank one, 10-product tank two, 11-heating rod, 12-thermometer. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Example: See Figure 1-Figure 5A distillation and condensation device for battery-grade ethyl acetate comprises a cooling box 1, a spiral liquid pump 2, a condenser tube 5 and a condenser tube 6. A partition 104 is arranged in the cooling box 1, and the partition 104 divides the cooling box 1 into two left and right chambers, wherein the left chamber is provided with a spiral liquid pump 2, and the right chamber is provided with a condenser tube 5 and a condenser tube 6. An air inlet 101 is arranged at the lower part of the right chamber of the cooling box 1, and an air outlet 102 is arranged at the upper part of the right chamber of the cooling box 1. One end of the condenser tube 5 is connected to an external distillation device, and the other end of the condenser tube 5 passes through the partition 104 and is connected to the left chamber. The top of the cooling box 1 is connected to a product tank 9 through an infusion channel 103, one end of the condenser tube 6 is connected to the product tank 2 10, and the other end is connected to the top of the product tank 9, and a waste heat utilization component is connected between the cooling box 1 and the product tank 9.

[0019] The spiral liquid pump 2 includes a belt assembly 4, and the spiral liquid pump 2 is connected to the impeller 3 through the belt assembly 4. The impeller 3 is rotatably arranged in the upper part of the right chamber of the cooling box 1. When the cold air rises in the right chamber of the cooling box 1, its kinetic energy is converted into the rotational power of the impeller 3, and then the spiral liquid pump 2 is driven to work through the belt assembly 4.

[0020] The waste heat utilization component includes a circulating water pipe 7 and a circulating water pump 8. One end of the circulating water pipe 7 is connected to the upper part of the right chamber of the cooling box 1 as a heat absorption end, and the other end of the circulating water pipe 7 is connected to the product tank 9 as a heating end. The circulating water pipe 7 is connected to the circulating water pump 8, and the circulating water pump 8 is installed on the upper outer side of the product tank 9. The circulating water pump 8 drives the water in the circulating water pipe 7 to circulate. After the water absorbs the waste heat in the cooling box 1 at the heat absorption end, it flows to the heating end to release heat to the liquid in the product tank 9.

[0021] It also includes a heating rod 11 and a thermometer 12. The heating rod 11 is installed on the top of the product tank 9. When the temperature in the product tank 9 is lower than the boiling point of ether, the temperature inside the tank is increased by electric heating. The thermometer 12 is connected to the top of the product tank 9, and the thermometer 12 is used to display the temperature inside the tank in real time.

[0022] The working principle of this embodiment is as follows: the high-temperature distilled gas containing ethyl acetate and ether produced by the external distillation device first enters the condenser 5, and the cold air is introduced through the air inlet. The cold air flows from bottom to top in the right chamber of the cooling box 1, and finally flows out from the air outlet. In this process, the cold air exchanges heat with the high-temperature distilled gas in the condenser 5, so that the distilled gas is condensed into liquid. The condensed liquid flows along the condenser 5 to the left chamber of the cooling box 1. In the rising process of the cold air, its kinetic energy is converted into the power for the impeller 3 to rotate, so that the impeller 3 drives the spiral liquid pump 2 to rotate through the belt assembly 4, and then the rotating spiral liquid pump 2 lifts the liquid at the bottom of the left chamber where it is located, and transports it to the product tank 9 through the infusion channel 103 for preliminary collection. The cold air in the cooling box 1 that has been heated by heat exchange is heated by the circulation When the hot water passes through the heat-absorbing end of the circulating water pipe 7, the heat it carries is transferred to the water in the circulating water pipe 7 to increase the water temperature. Subsequently, the circulating water pump 8 is operated to drive the water inside the circulating water pipe 7 to circulate, so that the hot water in the circulating water pipe 7 flows from the heat-absorbing end to the heating end. When the hot water flows through the heating end of the circulating water pipe 7, it releases its heat to the liquid in the product tank 9 to heat the mixed liquid containing ethyl acetate and a small amount of ether, thereby realizing the reuse of the waste heat of condensation and promoting the further evaporation of ether. When the temperature on the thermometer 12 is lower than the boiling point of ether, auxiliary heating is performed by the heating rod 11, so that the ether in the product pipe 1 can be fully evaporated, and the evaporated ether vapor enters the cooling box 1 again through the condenser pipe 6 for condensation, and finally converges into liquid ether and is transported to the product tank 10 for separate collection.

[0023] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A distillation and condensation device for battery-grade ethyl acetate, characterized in that: The invention comprises a cooling box (1), a spiral liquid pump (2), a condenser tube 1 (5) and a condenser tube 2 (6), wherein a partition (104) is provided inside the cooling box (1), and the partition (104) divides the cooling box (1) into two left and right chambers, wherein the left chamber is provided with the spiral liquid pump (2), and the right chamber is provided with the condenser tube 1 (5) and the condenser tube 2 (6), one end of the condenser tube 1 (5) is connected to an external distillation device, and the other end of the condenser tube 1 (5) passes through the partition (104) and is connected to the left chamber, the top of the cooling box (1) is connected to the product tank 1 (9) through the infusion channel (103), one end of the condenser tube 2 (6) is connected to the product tank 2 (10), and the other end is connected to the top of the product tank 1 (9), and a waste heat utilization component is connected between the cooling box (1) and the product tank 1 (9).

2. The distillation and condensation device for battery-grade ethyl acetate according to claim 1, characterized in that: An air inlet (101) is provided at the lower part of the right chamber of the cooling box (1), and an air outlet (102) is provided at the upper part of the right chamber of the cooling box (1).

3. The distillation and condensation device for battery-grade ethyl acetate according to claim 2, characterized in that: The spiral liquid pump (2) comprises a belt assembly (4), and the spiral liquid pump (2) is connected to an impeller (3) via the belt assembly (4). The impeller (3) is rotatably arranged on the upper part of the right chamber of the cooling box (1).

4. The distillation and condensation device for battery-grade ethyl acetate according to claim 3, characterized in that: The waste heat utilization component includes a circulating water pipe (7) and a circulating water pump (8), one end of the circulating water pipe (7) is connected to the upper part of the right chamber of the cooling box (1), and the other end of the circulating water pipe (7) is connected to the inside of the product tank (9), and the circulating water pipe (7) is connected to the circulating water pump (8), and the circulating water pump (8) is installed on the upper outer side of the product tank (9).

5. The distillation and condensation device for battery-grade ethyl acetate according to claim 4, characterized in that: The portion of the circulating water pipe (7) located in the cooling box (1) is a heat absorption end, and the portion of the circulating water pipe (7) located in the product tank (9) is a heat supply end.

6. The distillation and condensation device for battery-grade ethyl acetate according to claim 5, characterized in that: It also includes a heating rod (11) and a thermometer (12). The heating rod (11) is installed on the top of the product tank (9), and the thermometer (12) is connected to the top of the product tank (9).

Images