Rectification reaction kettle

Abstract

The utility model provides a rectification reaction kettle which comprises a kettle body, the upper end of the kettle body is provided with a feeding port, the feeding port is hinged with a sealing cover, the upper end of the kettle body is communicated with a plurality of feeding pipes, the lower end of the kettle body is communicated with a discharging pipe, the upper end of the kettle body is provided with a driving motor, and a power output shaft of the driving motor is connected with a stirrer extending into the kettle body. A plurality of electric heating pieces distributed circumferentially are arranged on the outer side of the kettle body, the upper end of the kettle body is communicated with an exhaust pipe and connected with a heat exchange cylinder, the upper end and the lower end of the heat exchange cylinder are communicated with a water inlet pipe and a water outlet pipe respectively, a condensation pipe is arranged in the heat exchange cylinder, the upper end of the condensation pipe is communicated with the exhaust pipe, and the lower end of the condensation pipe is communicated with a collecting pipe; the upper end of the kettle body is provided with a reflux pump communicated with the air return pipe, and the outlet end of the reflux pump is communicated with an air inlet pipe communicated with the kettle body. According to the steam recovery device, condensed steam can be efficiently recovered, and waste of the steam can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of reactors and relates to a rectification reactor. Background Art

[0002] Distillation is an important separation and purification method in chemical production, widely used in the fields of petroleum, chemical industry, pharmaceuticals, etc. As one of the core equipment to realize this process, the distillation reactor works by taking advantage of the different volatilities of the components in the mixture to preferentially vaporize the light components under heating conditions, and then collecting these vapors through condensation, thereby achieving the purpose of separation and purification. Traditional distillation reactors are usually composed of a heating zone, a distillation column, a condenser, and a receiver. The heating zone is used to provide heat to evaporate the light components in the mixture, and the distillation column provides sufficient gas-liquid contact area to facilitate effective separation between the components. The condenser is responsible for cooling the rising vapor into a liquid for collection and further processing.

[0003] However, in existing distillation reactors, despite the design of an efficient condensation system, a small amount of steam fails to condense completely and is discharged directly from the system with the exhaust gas due to factors such as steam flow rate, condensation temperature control accuracy, and condenser structure. This unrecovered steam not only wastes resources but also potentially harms the environment due to the presence of certain components. Utility Model Content

[0004] The purpose of the utility model is to provide a distillation reactor, which can efficiently recover the condensed steam and effectively reduce the waste of steam.

[0005] In order to solve the above technical problems, the utility model provides a distillation reactor, including a reactor body, a feeding port is provided at the upper end of the reactor body, a sealing cover is hingedly connected to the feeding port, a plurality of feeding pipes are connected to the upper end of the reactor body, each feeding pipe is provided with a valve, a discharge pipe is connected to the lower end of the reactor body, a valve is provided on the discharge pipe, a driving motor is installed at the upper end of the reactor body, a power output shaft of the driving motor is connected to an agitator extending into the reactor body, a plurality of electric heating plates distributed in a circumferential manner are provided on the outer side of the reactor body, an exhaust pipe is connected to the upper end of the reactor body, and the reactor body The upper end of the heat exchange cylinder is connected to the heat exchange cylinder, and the upper and lower ends of the heat exchange cylinder are respectively connected to a water inlet pipe and a water outlet pipe. A condenser is provided in the heat exchange cylinder, the upper end of the condenser passes through the heat exchange cylinder and is connected to the exhaust pipe, the lower end of the condenser passes through the heat exchange cylinder and is connected to a collecting pipe, spiral guide fins are provided in the condenser, the lower end of the condenser is connected to a return air pipe, and a reflux pump is installed at the upper end of the kettle body, the return air pipe is bent upward into an inverted U shape and then downwardly connected to the inlet end of the reflux pump, and the outlet end of the reflux pump is connected to an air inlet pipe connected to the kettle body.

[0006] By adopting the above technical solution, when performing distillation, the raw materials are added to the kettle through the feeding port or feeding pipe, and then the drive motor is started to drive the stirrer for stirring. The electric heating plate works on the outer wall of the kettle to heat the solution in the kettle, so that the substances with lower boiling points in the kettle gradually evaporate into steam, which is discharged from the exhaust pipe. After entering the condenser along the exhaust pipe, it is cooled and condensed into liquid through the cold water continuously circulating in the heat exchange cylinder and flows into the collection container along the collection pipe. During the process, the reflux pump generates suction to draw the gas coming out of the condenser back into the kettle, and continues to circulate and condense, effectively preventing the condensed steam from being directly discharged, until the substances to be distilled in the kettle are fully circulated and condensed, and finally the substances that are difficult to distill can be discharged downward through the discharge pipe.

[0007] The present invention is further configured such that the outer wall of the condenser tube is provided with a plurality of annular fins, and the outer diameter of each annular fin is smaller than the inner diameter of the heat exchange tube.

[0008] The utility model is further configured such that the outer side of the kettle body is covered with a heat insulating cover which covers the electric heating plate.

[0009] The present invention is further configured such that a temperature sensor for detecting the internal temperature thereof and a pressure sensor for detecting the internal pressure thereof are provided at the upper end of the kettle body.

[0010] The utility model is further configured such that a valve is provided on the collecting pipe.

[0011] The present invention is further configured such that the lower end of the heat exchange tube is connected to the upper end of the kettle body via a connecting sleeve having a C-shaped cross section.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] First, the present invention optimizes the design of the distillation reactor to recycle uncondensed steam back to the reactor body for further distillation and condensation, which can significantly improve the steam recovery rate and reduce material loss caused by incomplete condensation of steam, thereby saving production costs and reducing the burden on the environment.

[0014] Secondly, the present invention can effectively improve the heat exchange efficiency, shorten the condensation path, and make the condensation structure more compact through the structural design of the condenser tube of the heat exchange cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial cross-sectional view used to show the internal structure of the kettle;

[0017] Figure 3 It is a partial cross-sectional view used to show the internal structure of the heat exchange tube and condenser tube.

[0018] Among them, 1. kettle body; 2. feeding port; 3. sealing cover; 4. feeding pipe; 5. valve; 6. discharge pipe; 7. drive motor; 8. agitator; 9. electric heating plate; 10. heat insulation cover; 11. temperature sensor; 12. pressure sensor; 13. exhaust pipe; 14. heat exchange tube; 15. connecting sleeve; 16. water inlet pipe; 17. water outlet pipe; 18. condenser; 19. annular fin; 20. collecting pipe; 21. spiral guide fin; 22. return air pipe; 23. reflux pump; 24. inlet pipe. DETAILED DESCRIPTION

[0019] The following is a detailed description of a distillation reactor according to the present invention, with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention. Identical or similar reference numerals in the drawings represent identical or similar components.

[0020] Example, see Figure 1-3 A distillation reactor comprises a reactor body 1. The upper end of the reactor body 1 is provided with a feeding port 2, which is hingedly connected to a sealing cover 3. The upper end of the reactor body 1 is connected to three feeding pipes 4, each of which is provided with a valve 5. The lower end of the reactor body 1 is connected to a discharge pipe 6, which is provided with a valve 5. A drive motor 7 is mounted on the upper end of the reactor body 1, and the power output shaft of the drive motor 7 is connected to an agitator 8 extending into the reactor body 1. A plurality of electric heating plates 9 distributed in a circular pattern are provided on the lower portion of the outer side of the reactor body 1. An insulating cover 10 covering the electric heating plates 9 is provided on the outer side of the reactor body 1 to provide insulation and prevent burns to staff. A temperature sensor 11 for detecting the internal temperature and a pressure sensor 12 for detecting the internal pressure are provided on the upper end of the reactor body 1.

[0021] The upper end of the kettle body 1 is connected to an exhaust pipe 13, and a valve 5 is provided on the collecting pipe 20. The upper end of the kettle body 1 is connected to a heat exchange tube 14, and the lower end of the heat exchange tube 14 is connected to the upper end of the kettle body 1 through a connecting sleeve 15 with a C-shaped cross-section. The upper and lower ends of the heat exchange tube 14 are respectively connected to a water inlet pipe 16 and a water outlet pipe 17. The water inlet pipe 16 is used for water inlet, and the water outlet pipe 17 is used for drainage, so that the heat exchange tube 14 is always in a low-temperature water flow state. A condenser 18 is provided in the heat exchange tube 14, and the outer wall of the condenser 18 is provided with a plurality of annular fins 19. The outer diameter of each annular fin 19 is smaller than the inner diameter of the heat exchange tube 14. The heat exchange efficiency between the condenser 18 and the heat exchange tube 14 is increased by the annular fin 19, and the cooling The upper end of the condenser tube 18 passes through the heat exchange tube 14 and is connected to the exhaust pipe 13. The lower end of the condenser tube 18 passes through the heat exchange tube 14 and is connected to a collecting pipe 20. A spiral guide fin 21 is provided in the condenser tube 18, which can not only increase the ability to absorb heat and condense, but also increase the time that the steam stays in the condenser tube 18. The lower end of the condenser tube 18 is connected to a return air pipe 22. A reflux pump 23 is installed at the upper end of the kettle body 1. The return air pipe 22 is bent upward into an inverted U shape and then downwardly connected to the inlet end of the reflux pump 23. The return air pipe 22 is in an inverted U shape to prevent the condensate from flowing along the return air pipe 22. The outlet end of the reflux pump 23 is connected to an air inlet pipe 24 connected to the kettle body 1. The gas condensed after passing through the condenser tube 18 is extracted and refluxed into the kettle body 1 through the reflux pump 23.

[0022] Working principle: When performing distillation, the raw materials are added into the kettle body 1 through the feeding port 2 or the feeding pipe 4, and then the driving motor 7 is started to drive the stirrer 8 for stirring. The electric heating plate 9 works on the outer wall of the kettle body 1 to heat the solution in the kettle body 1, so that the substances with lower boiling points in the kettle body 1 gradually evaporate into steam and are discharged from the exhaust pipe 13. After entering the condenser 18 along the exhaust pipe 13, it is cooled and condensed into liquid through the cold water continuously circulating in the heat exchange cylinder 14 and flows into the collection container along the collecting pipe 20. During the process, the reflux pump 23 works to generate suction, and the gas coming out of the condenser 18 is drawn back into the kettle body 1 again, and the circulation condensation is continued, effectively preventing the condensed steam from being directly discharged, until the substances to be distilled in the kettle body 1 are fully circulated and condensed, and finally the substances that are not easy to distill are discharged downward through the discharge pipe 6.

[0023] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0024] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A distillation reactor, comprising a reactor body (1), wherein the upper end of the reactor body (1) is provided with a feeding port (2), the feeding port (2) is hingedly connected to a sealing cover (3), the upper end of the reactor body (1) is connected to a plurality of feeding pipes (4), each feeding pipe (4) is provided with a valve (5), the lower end of the reactor body (1) is connected to a discharge pipe (6), the discharge pipe (6) is provided with a valve (5), the upper end of the reactor body (1) is installed with a driving motor (7), the power output shaft of the driving motor (7) is connected to an agitator (8) extending into the reactor body (1), and the invention is characterized in that: The outer side of the kettle body (1) is provided with a plurality of electric heating plates (9) distributed in a circumferential manner. The upper end of the kettle body (1) is connected to an exhaust pipe (13). The upper end of the kettle body (1) is connected to a heat exchange tube (14). The upper and lower ends of the heat exchange tube (14) are respectively connected to a water inlet pipe (16) and a water outlet pipe (17). A condenser pipe (18) is provided in the heat exchange tube (14). The upper end of the condenser pipe (18) passes through the heat exchange tube (14) and is connected to the exhaust pipe (13). The lower end of the tube (18) passes through the heat exchange tube (14) and is connected to a collecting tube (20). A spiral guide fin (21) is provided in the condensing tube (18). The lower end of the condensing tube (18) is connected to a return air pipe (22). A reflux pump (23) is installed at the upper end of the kettle body (1). The return air pipe (22) bends upward into an inverted U shape and then downwardly connects to the inlet end of the reflux pump (23). The outlet end of the reflux pump (23) is connected to an air inlet pipe (24) connected to the kettle body (1).

2. A distillation reactor according to claim 1, characterized in that: The outer wall of the condenser tube (18) is provided with a plurality of annular fins (19), and the outer diameter of each annular fin (19) is smaller than the inner diameter of the heat exchange tube (14).

3. A distillation reactor according to claim 1, characterized in that: The outer side of the kettle body (1) is covered with a heat insulating cover (10) that covers the electric heating plate (9).

4. A distillation reactor according to claim 1, characterized in that: The upper end of the kettle body (1) is provided with a temperature sensor (11) for detecting the internal temperature thereof and a pressure sensor (12) for detecting the internal pressure thereof.

5. A distillation reactor according to claim 1, characterized in that: The collecting pipe (20) is provided with a valve (5).

6. A distillation reactor according to claim 1, characterized in that: The lower end of the heat exchange cylinder (14) is connected to the upper end of the kettle body (1) through a connecting sleeve (15) with a C-shaped cross section.

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