Dimethyl carbonate production device with reaction heat recycling function

Abstract

The utility model discloses a dimethyl carbonate production device with a reaction heat recycling function, and particularly relates to the field of dimethyl carbonate reaction devices, which comprises a base frame, a reaction kettle is fixedly mounted at the top of the base frame, a heat utilization mechanism is arranged on the outer wall of the reaction kettle, and the heat utilization mechanism comprises a copper pipe wound on the outer wall of the reaction kettle in a threaded manner. The copper pipe is attached to the outer wall of the reaction kettle, the bottom of the copper pipe is communicated with a water inlet pipe, and a water pump is arranged on one side of the water inlet pipe and fixedly installed on the top of the base frame; according to the dimethyl carbonate reaction kettle, the heat utilization mechanism is arranged, so that the copper pipe on the outer layer of the reaction kettle is heated through reaction heat generated during dimethyl carbonate reaction, namely water is heated, so that the water is heated to generate steam to push the impeller and finally push the stirring paddle in the reaction kettle to uniformly stir dimethyl carbonate reaction raw materials, and the reaction effect is improved; therefore, the reaction heat is recycled, and waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dimethyl carbonate reaction devices, and more specifically, to a dimethyl carbonate production device with reaction heat recycling. Background Art

[0002] Dimethyl carbonate is a chemical raw material with low toxicity, excellent environmental performance and wide application. It is an important organic synthesis intermediate. Its molecular structure contains functional groups such as carbonyl, methyl and methoxy, and has multiple reaction properties. It is safe, convenient, less polluting and easy to transport in production. Due to its low toxicity, dimethyl carbonate is a "green" chemical product with development prospects. Dimethyl carbonate is referred to as DMC. It is a colorless, transparent liquid with a pungent odor at room temperature. It is flammable, non-toxic and biodegradable. DMC has a wide range of applications. For example, DMC contains carbonyl, methyl, methoxy and carbonylmethoxy in its molecular structure, and can be used in organic synthesis reactions such as carbonylation, methylation, methoxylation and carbonylmethylation.

[0003] However, a large amount of heat is generated in the traditional dimethyl carbonate production reaction, and the prior art lacks a device for recycling the reaction heat, resulting in waste of the reaction heat of the traditional dimethyl carbonate production device.

[0004] In view of the above technical defects, a solution is now provided. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a dimethyl carbonate production device with reaction heat recycling, which is provided with a heat utilization mechanism, and then the reaction heat generated during the reaction of dimethyl carbonate is used to heat the copper tube of the outer layer of the reaction kettle, that is, to heat water, so that the water is heated to generate steam to drive the impeller, and finally drive the stirring paddle in the reaction kettle to evenly stir the dimethyl carbonate reaction raw materials, thereby improving the reaction effect, thereby utilizing the reaction heat for recycling and avoiding waste, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a dimethyl carbonate production device with reaction heat recycling, comprising a base frame, a reaction kettle is fixedly installed on the top of the base frame, and a heat utilization mechanism is provided on the outer wall of the reaction kettle;

[0007] The heat utilization mechanism includes a copper tube threadedly wound on the outer wall of the reactor, the copper tube and the outer wall of the reactor are in contact with each other, an insulation shell is provided on the outer side of the copper tube, and the insulation shell is fixedly installed on the outer wall of the reactor. The bottom of the copper tube is connected to a water inlet pipe, and a water pump is provided on one side of the water inlet pipe, and the water pump is fixedly installed on the top of the base frame. One side of the water inlet pipe is connected to a boiling hot box, and the boiling hot box is fixedly installed on the top of the base frame. The boiling hot box is arranged in a vertical state, and the top of the boiling hot box is connected to a water outlet pipe, and one side of the water outlet pipe is connected to the top of the copper tube.

[0008] In a preferred embodiment, the top of the boiling heat box is connected to a steam box, the steam box is arranged vertically upward, and the width of the steam box is smaller than the width of the boiling heat box.

[0009] In a preferred embodiment, an impeller is rotatably mounted on the inner wall of the steam box, the impeller and the steam box are arranged parallel to each other, a rotating rod is fixedly mounted on one side of the impeller, and the rotating rod is arranged in a horizontal state;

[0010] A first gear is fixedly installed on one side of the rotating rod, a second gear is meshed with the bottom of the first gear, the second gear and the first gear are arranged perpendicular to each other, a stirring rod is fixedly installed on the bottom of the second gear, the stirring rod is rotatably installed on the top of the reactor, and a stirring blade is fixedly installed on the outer wall of the stirring rod.

[0011] In a preferred embodiment, a hydrothermal mechanism is provided on the top of the steam box, and the hydrothermal mechanism includes a plurality of exhaust pipes connected to the top of the steam box, the plurality of exhaust pipes are arranged in a horizontal state, a water tank is fixedly mounted on the outer walls of the plurality of exhaust pipes, and the plurality of exhaust pipes pass through the outer wall of the water tank.

[0012] In a preferred embodiment, filter cotton is fixedly installed on one side of the plurality of exhaust pipes, a plurality of baffle plates are fixedly installed on the inner walls of the plurality of exhaust pipes, the plurality of baffle plates are arranged in a semicircular shape, and the plurality of baffle plates are arranged staggered with each other.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model provides a heat utilization mechanism, and sends the water in the boiling hot box into the water inlet pipe and into the copper tube through a water pump. At this time, the copper tube is in contact with the reactor that is undergoing reaction, and the heat generated by the reaction of dimethyl carbonate in the reactor is transferred to the outer wall of the reactor, that is, the heat is conducted to the water in the copper tube, and the water continues to move and enters the boiling hot box from the water outlet pipe to gradually heat up and boil the water therein. At this time, water vapor is generated in the boiling hot box and rises into the steam box to drive the impeller to rotate. The impeller drives the rotating rod to rotate the first gear and drives the second gear to rotate synchronously, that is, the second gear drives the stirring rod to rotate the stirring blade to evenly stir the dimethyl carbonate reaction raw materials in the reactor, thereby improving the reaction effect.

[0015] 2. The utility model sets a water heating mechanism, and the steam in the steam box enters into multiple exhaust pipes to increase the temperature of the multiple exhaust pipes, and passes through multiple baffles to slow down the passage of steam. At this time, the hot steam passing through the multiple exhaust pipes heats the water in the water tank, thereby generating hot water for easy use, and the filter cotton filters the steam discharged from the exhaust pipes.

[0016] In summary, a heat utilization mechanism is provided, and the reaction heat generated during the reaction of dimethyl carbonate is used to heat the outer copper tube of the reactor, that is, to heat the water, so that the water is heated to generate steam to drive the impeller, and finally the stirring paddle in the reactor is driven to evenly stir the dimethyl carbonate reaction raw materials, thereby improving the reaction effect. The reaction heat is thereby reused to avoid waste, and a hydrothermal mechanism is provided to send the hot steam to the water tank to heat domestic water. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a top view of the utility model.

[0019] Figure 3 It is a partial cross-sectional view of the utility model.

[0020] Figure 4 For this utility model Figure 3 A-section structure enlarged view.

[0021] Figure 5 It is a cross-sectional view of the water heating mechanism in the utility model.

[0022] The accompanying drawings are marked as follows: 1. base frame; 2. reactor; 3. heat utilization mechanism; 31. copper tube; 32. insulation shell; 33. water inlet pipe; 34. water pump; 35. boiling box; 36. water outlet pipe; 37. steam box; 38. impeller; 39. rotating rod; 310. first gear; 311. second gear; 312. stirring rod; 313. stirring blade; 4. hydrothermal mechanism; 41. exhaust pipe; 42. water tank; 43. filter cotton; 44. baffle plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0024] Refer to the instruction manual Figure 1 - Figure 5 , a dimethyl carbonate production device with reaction heat recycling, such as Figure 1 As shown, it comprises a base frame 1, a reaction kettle 2 is fixedly mounted on the top of the base frame 1, and a heat utilization mechanism 3 is arranged on the outer wall of the reaction kettle 2;

[0025] like Figure 2 and Figure 3 As shown, the heat utilization mechanism 3 includes a copper tube 31 threadedly wound on the outer wall of the reactor 2, the copper tube 31 and the outer wall of the reactor 2 are in contact with each other, and an insulation shell 32 is provided on the outer side of the copper tube 31, and the insulation shell 32 is fixedly installed on the outer wall of the reactor 2. The insulation shell 32 keeps the temperature of the copper tube 31, and the bottom of the copper tube 31 is connected to a water inlet pipe 33, and a water pump 34 is provided on one side of the water inlet pipe 33. The water pump 34 is fixedly installed on the top of the base frame 1, and one side of the water inlet pipe 33 is connected to a boiling hot box 35, and the boiling hot box 35 is fixedly installed At the top of the base frame 1, the boiling hot box 35 is arranged in a vertical state. The water in the boiling hot box 35 is sent to the water inlet pipe 33 through the water pump 34, and then enters the copper tube 31. At this time, the copper tube 31 is in contact with the reactor 2 that is undergoing a reaction, and the heat generated by the reaction of dimethyl carbonate in the reactor 2 is transferred to the outer wall of the reactor 2, that is, the heat is conducted to the water in the copper tube 31. The top of the boiling hot box 35 is connected to the water outlet pipe 36, and one side of the water outlet pipe 36 is connected to the top of the copper tube 31. The water continues to move and enters the boiling hot box 35 from the water outlet pipe 36.

[0026] like Figure 3 and Figure 4As shown, the top of the boiling hot box 35 is connected to a steam box 37, which is arranged vertically upward. The width of the steam box 37 is smaller than the width of the boiling hot box 35, and the water in the boiling hot box 35 gradually heats up and boils. At this time, water vapor is generated in the boiling hot box 35 and rises into the steam box 37.

[0027] like Figure 3 and Figure 4 As shown, an impeller 38 is rotatably mounted on the inner wall of the steam box 37, and the impeller 38 and the steam box 37 are arranged parallel to each other. A rotating rod 39 is fixedly mounted on one side of the impeller 38, and the rotating rod 39 is arranged in a horizontal state. The steam drives the impeller 38 to rotate, and then the impeller 38 drives the rotating rod 39 to rotate synchronously.

[0028] like Figure 3 and Figure 4 As shown, a first gear 310 is fixedly installed on one side of the rotating rod 39, and a second gear 311 is meshed at the bottom of the first gear 310. The second gear 311 and the first gear 310 are arranged perpendicular to each other, so that the rotating rod 39 drives the first gear 310 to rotate and makes the second gear 311 rotate synchronously. A stirring rod 312 is fixedly installed on the bottom of the second gear 311, and the stirring rod 312 is rotatably installed on the top of the reactor 2. A stirring blade 313 is fixedly installed on the outer wall of the stirring rod 312, that is, the second gear 311 drives the stirring rod 312 to make the stirring blade 313 rotate to evenly stir the dimethyl carbonate reaction raw materials in the reactor 2, thereby improving the reaction effect.

[0029] like Figure 3 and Figure 5 As shown, a hydrothermal mechanism 4 is provided on the top of the steam box 37, and the hydrothermal mechanism 4 includes a plurality of exhaust pipes 41 connected to the top of the steam box 37, the plurality of exhaust pipes 41 are arranged in a horizontal state, and a water tank 42 is fixedly installed on the outer walls of the plurality of exhaust pipes 41, and the plurality of exhaust pipes 41 penetrate the outer wall of the water tank 42, that is, the steam in the steam box 37 enters the plurality of exhaust pipes 41 to heat the plurality of exhaust pipes 41, and at this time, the hot steam passing through the plurality of exhaust pipes 41 heats the water in the water tank 42, thereby generating hot water for easy use.

[0030] like Figure 5 As shown, filter cotton 43 is fixedly installed on one side of the multiple exhaust pipes 41, and multiple baffle plates 44 are fixedly installed on the inner walls of the multiple exhaust pipes 41. The multiple baffle plates 44 are arranged in a semicircular shape and are staggered with each other. The filter cotton 43 filters the steam discharged from the exhaust pipes 41 and passes the steam slowly through the multiple baffle plates 44, thereby facilitating better heat transfer.

[0031] The working process and principle of the utility model are as follows:

[0032] The water in the boiling hot box 35 is sent to the water inlet pipe 33 through the water pump 34, and then enters the copper tube 31. At this time, the copper tube 31 is in contact with the reactor 2 that is undergoing a reaction, and the heat generated by the reaction of dimethyl carbonate in the reactor 2 is transferred to the outer wall of the reactor 2, that is, the heat is conducted to the water in the copper tube 31, and the water continues to move and enters the boiling hot box 35 from the water outlet pipe 36. The water in the boiling hot box 35 gradually heats up and boils. At this time, water vapor is generated in the boiling hot box 35 and rises into the steam box 37. The steam drives the impeller 38 to rotate, and the impeller 38 drives the rotating rod 39 to rotate synchronously. Then the rotating rod 39 drives the first gear 310 to rotate and makes the second gear 311 rotate synchronously, that is, the second gear 311 drives the stirring rod 312 to make the stirring blade 313 rotate to uniformly stir the dimethyl carbonate reaction raw materials in the reactor 2, thereby improving the reaction effect;

[0033] At the same time, the steam in the steam box 37 enters the multiple exhaust pipes 41, causing the multiple exhaust pipes 41 to heat up, and passes through the multiple baffles 44 to slow down the passage of the steam. At this time, the hot steam passing through the multiple exhaust pipes 41 heats the water in the water tank 42, thereby generating hot water for easy use, and the filter cotton 43 filters the steam discharged from the exhaust pipes 41.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A dimethyl carbonate production device with reaction heat recycling, comprising a base frame (1), characterized in that: A reaction kettle (2) is fixedly mounted on the top of the base frame (1), and a heat utilization mechanism (3) is provided on the outer wall of the reaction kettle (2); The heat utilization mechanism (3) comprises a copper tube (31) threadedly wound on the outer wall of the reaction kettle (2), the copper tube (31) and the outer wall of the reaction kettle (2) being in contact with each other, a heat-insulating shell (32) being provided on the outer side of the copper tube (31), the heat-insulating shell (32) being fixedly mounted on the outer wall of the reaction kettle (2), a water inlet pipe (33) being connected to the bottom of the copper tube (31), a water pump (34) being provided on one side of the water inlet pipe (33), the water pump (34) being fixedly mounted on the top of the base frame (1), a boiling heat box (35) being connected to one side of the water inlet pipe (33), the boiling heat box (35) being fixedly mounted on the top of the base frame (1), the boiling heat box (35) being arranged in a vertical state, a water outlet pipe (36) being connected to the top of the boiling heat box (35), the water outlet pipe (36) being connected to the top of the copper tube (31) on one side.

2. A dimethyl carbonate production device with reaction heat recycling according to claim 1, characterized in that: The top of the boiling heat box (35) is connected to a steam box (37), and the steam box (37) is arranged vertically upward. The width of the steam box (37) is smaller than the width of the boiling heat box (35).

3. A dimethyl carbonate production device with reaction heat recycling according to claim 2, characterized in that: An impeller (38) is rotatably mounted on the inner wall of the steam box (37), the impeller (38) and the steam box (37) are arranged parallel to each other, a rotating rod (39) is fixedly mounted on one side of the impeller (38), and the rotating rod (39) is arranged in a horizontal state; A first gear (310) is fixedly mounted on one side of the rotating rod (39); a second gear (311) is meshed with the bottom of the first gear (310); the second gear (311) and the first gear (310) are arranged perpendicular to each other; a stirring rod (312) is fixedly mounted on the bottom of the second gear (311); the stirring rod (312) is rotatably mounted on the top of the reaction kettle (2); and a stirring blade (313) is fixedly mounted on the outer wall of the stirring rod (312).

4. A dimethyl carbonate production device with reaction heat recycling according to claim 2, characterized in that: A water heating mechanism (4) is arranged on the top of the steam box (37), and the water heating mechanism (4) comprises a plurality of exhaust pipes (41) connected to the top of the steam box (37), the plurality of exhaust pipes (41) are arranged in a horizontal state, a water containing box (42) is fixedly mounted on the outer wall of the plurality of exhaust pipes (41), and the plurality of exhaust pipes (41) penetrate the outer wall of the water containing box (42).

5. A dimethyl carbonate production device with reaction heat recycling according to claim 4, characterized in that: A filter cotton (43) is fixedly mounted on one side of the plurality of exhaust pipes (41), a plurality of baffle plates (44) are fixedly mounted on the inner walls of the plurality of exhaust pipes (41), the plurality of baffle plates (44) are arranged in a semicircular shape, and the plurality of baffle plates (44) are arranged staggered with respect to each other.

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