Cooling device for preparing methyl ethyl carbonate

Abstract

The utility model relates to the technical field of ethyl methyl carbonate preparation, in particular to a cooling device for ethyl methyl carbonate preparation, which comprises a cooling tank and a condenser pipe penetrating through the cooling tank, a water tank is mounted on one side of the cooling tank, a water pump is arranged in the water tank, a water supply pipe is mounted at the output end of the water pump, and the tail end of the water supply pipe extends into the cooling tank. A return pipe is communicated between the top end of the water tank and the cooling tank, a filter screen is detachably mounted in an inner cavity of the water tank and can filter return water in the cooling tank, so that large-particle impurities in the return water are intercepted above the filter screen, and the circulating water pump can effectively and normally work for a long time; the two semicircular sliding blocks are driven to ascend and descend, impurities originally attached to the inner tank wall of the cooling tank and the outer pipe wall of the condensation pipe are scraped off, good cold and heat exchange is conducted between the condensation pipe and cooling water in an inner cavity of the cooling tank, and it is guaranteed that methyl ethyl carbonate gas in the condensation pipe is fully condensed.

Description

Technical Field

[0001] The utility model relates to the technical field of ethyl methyl carbonate preparation, in particular to a cooling device for ethyl methyl carbonate preparation. Background Art

[0002] Ethyl methyl carbonate, also known as ethyl methyl carbonate, is a colorless transparent liquid, insoluble in water, can be used for organic synthesis, and is an excellent solvent for lithium-ion battery electrolyte. Ethyl methyl carbonate should be stored in a cool, ventilated, and dry place, and stored and transported in accordance with the regulations for flammable chemicals. During the processing of ethyl methyl carbonate, the gas generated from the top of the distillation tower needs to be condensed by a cooling device, and the condensed liquid flows into the liquid collecting tank to obtain ethyl methyl carbonate.

[0003] The conventional cooling device for preparing ethyl methyl carbonate has a U-shaped tube in the cooling chamber. When the gas passes through the U-shaped tube, it is condensed by the cooling water in the cooling chamber.

[0004] However, after long-term operation of this method, the impurities in the water will easily adhere to the outer wall of the condenser due to repeated recycling of the water, thereby reducing the heat exchange efficiency between the condenser and the cooling chamber, thereby causing insufficient condensation of the ethyl methyl carbonate gas in the condenser. In addition, the impurities in the water will also clog the pump body of the condensation circulating water system, causing further losses. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a cooling device for preparing ethyl methyl carbonate, which can effectively solve the problems of insufficient condensation and easy clogging of the circulating water pump after long-term use in the prior art.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The utility model provides a cooling device for preparing ethyl methyl carbonate, comprising a cooling tank and a condenser penetrating the cooling tank, a water tank being installed at one side of the cooling tank, a water pump being arranged in the water tank, a water supply pipe being installed at the output end of the water pump, the end of the water supply pipe extending into the cooling tank, a reflux pipe being connected between the top end of the water tank and the cooling tank, a filter screen being detachably installed in the inner cavity of the water tank, two semicircular sliders being lifted and slidably installed in the cooling tank, the two semicircular sliders being combined to form a full-circle slider, the outer diameter of the full-circle slider being consistent with the inner diameter of the cooling tank, the inner diameter of the full-circle slider being consistent with the outer diameter of the condenser, the top ends of the two semicircular sliders both penetrating through the bottom ends to open a plurality of discharge holes.

[0008] Furthermore, a discharge port is provided at the bottom end of the cooling tank, a valve is installed in the discharge port, a support plate is fixedly mounted on the outer tank wall of the cooling tank, and two symmetrically distributed support frames are fixedly mounted on the bottom end of the support plate.

[0009] Furthermore, an extension plate is fixedly installed on one side of the support plate, the water tank is fixedly installed on the top of the extension plate, and two support columns are vertically fixedly installed on the bottom end of the extension plate, and the bottom ends of the two support columns are flush with the bottom ends of the two support frames.

[0010] Furthermore, the condenser pipe extends from the top of the cooling tank into the inner cavity of the cooling tank and extends out from the outer tank wall of the cooling tank, and flange mounting plates are installed at both ends of the condenser pipe.

[0011] Furthermore, one end of the filter screen extends through and reaches the outer side wall of the water tank, and a baffle is fixedly installed thereon, and a handle is vertically fixedly installed on the side of the baffle screen away from the filter screen.

[0012] Furthermore, two lifting cylinders are vertically fixedly installed at the bottom end of the support plate, the output ends of the two lifting cylinders are connected to lifting rods, the top ends of the two lifting rods extend into the cooling tank, and are respectively vertically fixedly installed on the top ends of the corresponding semicircular sliders.

[0013] Compared with the known prior art, the technical solution provided by the utility model has the following beneficial effects:

[0014] 1. A filter is installed in the circulating water tank, which can filter the return water from the cooling tank, so that the large particles of impurities in the return water are intercepted above the filter, thereby ensuring that the water pumped into the water tank by the circulating water pump to participate in the condensation of the condenser tube in the cooling tank remains clean, thereby ensuring that the circulating water pump can work normally and effectively for a long time;

[0015] 2. Install two semicircular sliders in the cooling tank for lifting and sliding, and install a valve at the bottom discharge port of the cooling tank. Open the valve regularly and drive the two semicircular sliders to lift and lower, so as to scrape off the impurities originally attached to the inner wall of the cooling tank and the outer wall of the condenser tube, and discharge the impurities from the cooling tank from the discharge port, so that the condenser tube and the cooling water in the inner cavity of the cooling tank can have good heat exchange, ensuring that the ethyl methyl carbonate gas in the condenser tube is fully condensed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation structure of the semicircular slider of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure in the water tank of the utility model;

[0020] Figure 4 It is a schematic diagram of the semicircular slider structure of the utility model.

[0021] The numbers in the figure represent: 1. Cooling tank; 11. Valve; 12. Support plate; 13. Support frame; 2. Condenser; 21. Flange mounting plate; 3. Water tank; 31. Water pump; 32. Water supply pipe; 33. Return pipe; 34. Filter; 35. Baffle; 36. Handle; 4. Lifting cylinder; 41. Lifting rod; 42. Semicircular slider; 43. Discharge hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0023] The utility model is further described below in conjunction with embodiments.

[0024] Example 1

[0025] Reference Figure 1-4, which is the first embodiment of the utility model, discloses a cooling device for preparing ethyl methyl carbonate, including a cooling tank 1 and a condenser 2 penetrating the cooling tank 1, a water tank 3 is installed on one side of the cooling tank 1, a cooling machine (not shown) is installed in the water tank 3, the water in the water tank 3 is cooled to ensure that the cooling circulating water is in a low temperature state, and the ethyl methyl carbonate gas in the condenser 2 is well heat exchanged, a water pump 31 is arranged in the water tank 3, a water supply pipe 32 is installed at the output end of the water pump 31, the end of the water supply pipe 32 extends into the cooling tank 1, a reflux pipe 33 is connected between the top of the water tank 3 and the cooling tank 1, and a detachable inner cavity of the water tank 3 is provided. The filter 34 is installed, and the two opposite inner walls of the water tank 3 are provided with slide grooves. The two sides of the filter 34 are slidably installed in the slide grooves, and the ends of the filter 34 slide through and extend out of the water tank 3, so that the filter 34 can be taken out from the water tank 3 at any time. The two semicircular sliders 42 are lifted and slidably installed in the cooling tank 1. The two semicircular sliders 42 are combined to form a full-circle slider. The outer diameter of the full-circle slider is consistent with the inner diameter of the cooling tank 1, and the inner diameter of the full-circle slider is consistent with the outer diameter of the condenser 2. The top ends of the two semicircular sliders 42 are penetrated through the bottom ends to open a plurality of discharge holes 43, so that the scraped impurities can fall from the discharge holes 43 to the bottom discharge port in the cooling tank 1.

[0026] Example 2

[0027] Reference Figure 1-4 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: a discharge port is provided at the bottom end of the cooling tank 1, and a valve 11 is installed in the discharge port. Impurities accumulated in the discharge port are discharged by regularly opening the valve 11. A support plate 12 is fixedly sleeved on the outer tank wall of the cooling tank 1. Two symmetrically distributed support frames 13 are fixedly installed at the bottom end of the support plate 12. An extension plate is fixedly installed on one side of the support plate 12. The water tank 3 is fixedly installed on the top of the extension plate to ensure that the water tank 3 is firmly supported. Two support columns are vertically fixedly installed at the bottom end of the extension plate. The bottom ends of the two support columns are flush with the bottom ends of the two support frames 13 to ensure that the entire device has good support stability. Figure 1 It can be known that the condenser 2 extends from the top of the cooling tank 1 into the inner cavity of the cooling tank 1 and extends from the outer tank wall of the cooling tank 1. The two semicircular sliders 42 will not touch the bending part of the condenser 2 during the lifting and sliding process. Flange mounting plates 21 are installed at both ends of the condenser 2, which is convenient for docking with other equipment for preparing ethyl methyl carbonate. One end of the filter 34 extends through the outer wall of the water tank 3 and is fixedly installed with a baffle 35. The baffle 35 is attached and sealed to the outer wall of the water tank 3 to prevent water leakage. A handle 36 is vertically fixed on the side of the baffle 35 away from the filter 34 to facilitate taking the filter 34 out of the water tank 3. Two lifting cylinders 4 are vertically fixed on the bottom end of the support plate 12. The output ends of the two lifting cylinders 4 are connected to the lifting rod 41. Figure 2It can be known that the two lifting rods 41 are both U-shaped in design, which is convenient for extending into the cooling tank 1. The top ends of the two lifting rods 41 extend into the cooling tank 1 and are vertically fixed on the top ends of the corresponding semicircular sliders 42.

[0028] The remaining structures are the same as those of Example 1.

[0029] First, the two ends of the condenser 2 are connected to the output end of the ethyl methyl carbonate production equipment and the input end of the ethyl methyl carbonate recovery solution through the flange mounting plate 21, and then the valve 11 is closed, and ethyl methyl carbonate gas is continuously injected into the condenser 2;

[0030] Secondly, start the water pump 31 to extract water from the water tank 3 and input it into the tank cavity of the cooling tank 1 through the water supply pipe 32. When the water level in the tank cavity of the cooling tank 1 reaches the height of the return pipe 33, the water will be discharged from the return pipe 33 and flow back into the water tank 3. However, the water discharged from the return pipe 33 will first be intercepted and filtered by the filter 34, and then enter the inner cavity of the water tank 3 to be extracted by the water pump 31 to participate in the circulating water supply. The filter 34 intercepts large particles of impurities in the return water and makes the impurities remain on the surface of the filter 34. By regularly extracting the filter 34 from the water tank 3, the large particles of impurities are cleaned up to ensure that the filter 34 can effectively perform filtering and interception operations for a long time.

[0031] Finally, the valve 11 is opened periodically, and the two lifting cylinders 4 are started synchronously. The corresponding semicircular sliders 42 are driven to rise and fall and slide in the tank cavity of the cooling tank 1 through the corresponding lifting rods 41. The outer diameter of the full circular slider composed of the two semicircular sliders 42 is consistent with the inner diameter of the tank cavity of the cooling tank 1, and the inner diameter of the full circular slider is consistent with the outer diameter of the condenser 2. Therefore, during the reciprocating sliding process, impurities attached to the inner tank wall of the cooling tank 1 and the outer tube wall of the condenser 2 can be cleaned up, and fall to the bottom of the cooling tank 1 through the discharge hole 43 and discharged from the discharge port.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling device for preparing ethyl methyl carbonate, comprising a cooling tank (1) and a condenser (2) passing through the cooling tank (1), characterized in that: Also includes: A water tank (3) is installed on one side of the cooling tank (1), a water pump (31) is arranged in the water tank (3), a water supply pipe (32) is installed at the output end of the water pump (31), the end of the water supply pipe (32) extends into the cooling tank (1), a return pipe (33) is connected between the top end of the water tank (3) and the cooling tank (1), and a filter screen (34) is detachably installed in the inner cavity of the water tank (3); Two semicircular sliders (42) are installed in the cooling tank (1) for lifting and sliding. The two semicircular sliders (42) are combined to form a full-circular slider. The outer diameter of the full-circular slider is consistent with the inner diameter of the cooling tank (1), and the inner diameter of the full-circular slider is consistent with the outer diameter of the condenser (2). The top ends of the two semicircular sliders (42) are penetrated through the bottom ends to open a plurality of discharge holes (43).

2. A cooling device for preparing ethyl methyl carbonate according to claim 1, characterized in that: The cooling tank (1) has a discharge port at its bottom end, a valve (11) is installed in the discharge port, a support plate (12) is fixedly mounted on the outer tank wall of the cooling tank (1), and two symmetrically distributed support frames (13) are fixedly mounted on the bottom end of the support plate (12).

3. A cooling device for preparing ethyl methyl carbonate according to claim 2, characterized in that: An extension plate is fixedly mounted on one side of the support plate (12), the water tank (3) is fixedly mounted on the top of the extension plate, and two support columns are vertically fixedly mounted on the bottom end of the extension plate, the bottom ends of the two support columns are flush with the bottom ends of the two support frames (13).

4. A cooling device for preparing ethyl methyl carbonate according to claim 3, characterized in that: The condenser pipe (2) extends from the top end of the cooling tank (1) into the inner cavity of the cooling tank (1) and extends from the outer tank wall of the cooling tank (1). Flange mounting plates (21) are installed at both ends of the condenser pipe (2).

5. A cooling device for preparing ethyl methyl carbonate according to claim 4, characterized in that: One end of the filter screen (34) extends through the outer wall of the water tank (3) and is fixedly mounted with a retaining bar (35); a handle (36) is vertically fixedly mounted on the side of the retaining bar (35) away from the filter screen (34).

6. A cooling device for preparing ethyl methyl carbonate according to claim 5, characterized in that: Two lifting cylinders (4) are vertically fixedly installed at the bottom end of the support plate (12), the output ends of the two lifting cylinders (4) are connected to the lifting rods (41), the top ends of the two lifting rods (41) extend into the cooling tank (1), and are respectively vertically fixedly installed on the top ends of the corresponding semicircular sliders (42).

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