Nicotinamide preparation reaction kettle

Abstract

The utility model relates to the technical field of nicotinamide preparation, and discloses a nicotinamide preparation reaction kettle which comprises a reaction kettle main body, a top plate is arranged at the top of the reaction kettle main body, a splitter plate is arranged on one side of the top plate, a water inlet pipe is arranged at the top of the splitter plate, and a water drainage pipe located on the opposite side of the water inlet pipe is arranged at the top of the splitter plate. The cooling device has the beneficial effects that hot water with the temperature of 70-80 DEG C is fed into the splitter plate through the water inlet pipe, then sequentially enters the two cooling pipes through the stirring ring and comes out of the tops of the other two cooling pipes, and finally, the other part of the hot water passes through the splitter plate and is discharged out of the drainage pipe; therefore, the reaction temperature of raw materials in the reaction kettle main body can be continuously maintained, the production efficiency of nicotinamide is improved, similarly, the interior of the reaction kettle main body can be cooled, and cold water circularly flows in the reaction kettle main body along the cooling pipe; the cold water absorbing heat is changed into hot water which can provide reaction temperature for the condensation reaction of the next reaction kettle again.

Description

Technical Field

[0001] The utility model relates to the technical field of nicotinamide preparation, and more specifically to a nicotinamide preparation reaction kettle. Background Art

[0002] Nicotinamide is an amide compound of nicotinic acid, a white crystalline powder, and is clinically used to prevent and treat pellagra, stomatitis, glossitis, sick sinus syndrome, atrioventricular block and other problems. Nicotinamide is prepared by first mixing pyridine, triacetamide and acetaldehyde in a certain molar ratio, adding the mixed raw materials into a reactor, heating to 70-80°C with a small amount of sulfur trioxide for 3-4 hours, then adding the condensed product into the reactor, and carrying out hydrogenation reaction with a catalyst at 250-300°C and a high pressure of 10-20MPa for about 5-6 hours, and finally cooling it and taking it out. Purely formed nicotinamide; Application No. 201220416249.7 proposes a nicotinamide reactor, whose main technical solution includes left and right brackets, characterized in that: a nicotinamide reactor is installed between the left and right brackets, a jacket layer is provided on the side wall of the nicotinamide reactor, and a heat circulation water inlet and outlet pipe is provided on the jacket layer. A rotating shaft is respectively provided on the left and right side walls of the nicotinamide reactor, and the rotating shaft is rotatably installed in a bearing seat installed above the left and right brackets. However, during the preparation process, the interior of the reactor needs to be heated and cooled, and this solution cannot heat and cool the raw materials inside it, thereby reducing the preparation efficiency of nicotinamide. Utility Model Content

[0003] In order to overcome the above defects of the prior art, the utility model provides a nicotinamide preparation reactor to solve the problems existing in the above background technology.

[0004] The utility model provides the following technical scheme: a nicotinamide preparation reactor, comprising a reactor body, a top plate is provided on the top of the reactor body, a diverter plate is provided on one side of the top plate, a water inlet pipe is provided on the top of the diverter plate, a drain pipe located on the opposite side of the water inlet pipe is provided on the top of the diverter plate, a cooling pipe is provided on the bottom of the diverter plate, hot water at 70-80°C is sent into the diverter plate through the water inlet pipe, and then enters the inside of two cooling pipes in turn through a stirring ring, and comes out from the top of the other two cooling pipes, and finally passes through another part of the diverter plate and is discharged from the drain pipe, so that the reaction temperature of the raw materials in the reactor body can be continuously maintained, and the production efficiency of nicotinamide is improved. Similarly, the reactor body can be cooled, and cold water circulates in the reactor body along the cooling pipe. The cold water after absorbing heat becomes hot water, which can provide the reaction temperature for the condensation reaction of the next reactor again, thereby reducing the cooling and heating costs of nicotinamide and increasing the comfort of the staff;

[0005] Furthermore, a transmission column is provided at the bottom of the reactor body, a rotating column is provided on the top of the transmission column, a stirring column is provided on the outside of the rotating column, a rotating ring is provided on the outside of the stirring column, a stirring ring is provided around the outside of the rotating ring, and a fixed plate is provided on the top of the rotating column. The transmission column drives the rotating column and the stirring column on its outside to stir the raw materials in the reactor body. At the same time, during the rotation of the rotating column, the rotating ring on the outside of the stirring column will also rotate on the outside of the stirring column, thereby driving the stirring ring on the outside of the rotating ring to rotate and stir the raw materials in the reactor body, so that the stirring is more evenly and thoroughly, which is convenient for the subsequent reaction to produce nicotinamide.

[0006] Furthermore, a limiting plate is provided at one end of the stirring column, and the rotating ring is limited by the limiting plate to prevent it from falling during the rotating stirring process, thereby increasing the safety of the rotating ring.

[0007] Furthermore, a driving motor is provided at the bottom of the reactor body, support columns are provided around the bottom of the reactor body, a discharge pipe is provided on one side of the bottom of the reactor body, and a feed pipe is provided on the top of the top plate. The rotating column is movably limited in the reactor body by a fixed plate, so that the rotating column can be taken out at will, which is convenient for the staff to clean it and increases the comfort of the staff.

[0008] Furthermore, the number of the cooling tubes is four, and the size of the bending angle of the cooling tubes is adapted to the size of the stirring ring. The reactor body can be evenly heated or cooled through the four cooling tubes, thereby reducing the production time of niacinamide and further improving the production efficiency of niacinamide.

[0009] Compared with the prior art, the beneficial effect of the present invention is that hot water at 70-80°C is sent into the diverter plate through the water inlet pipe, and then enters the interior of the two cooling tubes in turn through the stirring ring, and comes out from the top of the other two cooling tubes, and finally is discharged from the drain pipe through the other part of the diverter plate, so that the reaction temperature of the raw materials in the reactor body can be continuously maintained, and the production efficiency of nicotinamide is improved. Similarly, the reactor body can be cooled, and cold water circulates in the reactor body along the cooling pipe. The cold water after absorbing heat becomes hot water, which can provide the reaction temperature for the condensation reaction of the next reactor again, thereby reducing the cooling and heating costs of nicotinamide and increasing the comfort of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0011] Figure 2 It is a cross-sectional view of the main structure of the reactor of the utility model.

[0012] Figure 3 This is a schematic diagram of the stirring ring structure of the utility model.

[0013] Figure 4 It is a cross-sectional view of the shunt pipe structure of the utility model.

[0014] The accompanying drawings are marked as follows: 1. Reactor body; 2. Drive motor; 3. Support column; 4. Discharge pipe; 5. Top plate; 6. Feed pipe; 7. Transmission column; 8. Rotating column; 9. Stirring column; 10. Limiting plate; 11. Rotating ring; 12. Stirring ring; 13. Fixed plate; 14. Diverter plate; 15. Water inlet pipe; 16. Cooling pipe; 17. Drain pipe. DETAILED DESCRIPTION

[0015] The technical scheme of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. In addition, the forms of the various structures described in the following embodiments are only examples. The nicotinamide preparation reactor involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0016] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0017] Embodiment 1

[0018] Reference Figure 1-4 A nicotinamide preparation reactor, firstly, a plurality of stirring rings 12 are installed around the outside of the stirring ring 12, then the stirring column 9 is installed on the outside of the rotating column 8, then the rotating ring 11 is installed on the outside of the stirring column 9, then the limit plate 10 is installed on one end of the stirring column 9, then the transmission column 7 is installed on the inner bottom of the reactor body 1, then the support column 3 is installed around the outside of the reactor body 1, then the drive motor 2 is installed at the bottom of the reactor body 1, and the output end of the drive motor 2 is connected to the transmission column 7, then the diverter plate 14 is installed on one side of the top plate 5, and then the water inlet pipe 15 is installed on the top of the diverter plate 14, and then four cooling pipes 16 are installed around the bottom of the diverter plate 14, and then the drain pipe 17 is installed on the opposite side of the water inlet pipe 15 on the top of the diverter plate 14, and then the top plate 5 is installed on the top of the reactor body 1, and then the rotating column 8 is installed inside the reactor body 1, and the bottom of the rotating column 8 is inserted on the outside of the transmission column 7, and then the fixed plate 13 is installed on the top of the top plate 5, and the fixed plate 13 is used to limit the rotating column 8, and then the feed pipe 6 is installed on the top of the top plate 5, and finally the discharge pipe 4 is installed on one side of the bottom of the reactor body 1.

[0019] The working principle of the utility model is as follows: the staff adds nicotinamide reaction raw materials into the reactor body 1 through the feed pipe 6. After the addition is completed, the feed pipe 6 is closed, and the drive motor 2 is started to drive the transmission column 7 and the rotating column 8 on its top to rotate in the reactor body 1, so as to stir the raw materials in the reactor body 1 evenly, thereby increasing the reaction rate of the raw materials. At the same time, during the rotation of the rotating column 8, the rotating ring 11 outside the stirring column 9 will also rotate on the outside of the stirring column 9, thereby driving the stirring ring 12 outside the rotating ring 11 to rotate to stir the raw materials in the reactor body 1, so that the raw materials are stirred evenly and thoroughly, thereby facilitating the subsequent reaction to produce nicotinamide, thereby improving the production efficiency of nicotinamide; at the same time, according to the reaction process of the raw materials in the reactor body 1, when the condensation reaction is carried out, the staff can enter the diverter plate 14 along the water inlet pipe 15, thereby entering the two cold water bottles 12 in sequence through the stirring ring 12. The liquid passes through the water inlet pipe 15, the flow divider 14, the cooling pipe 16 and the drain pipe 17, and finally passes through the other part of the diverter plate 14 and is discharged from the drain pipe 17, so that the reaction temperature of the raw materials in the reactor body 1 can be continuously maintained, and the production efficiency of nicotinamide is further improved. At the same time, when the hydrogenation reaction is carried out, the liquid with a temperature between 250 and 300° C. can be passed through the water inlet pipe 15, the flow divider 14, the cooling pipe 16 and the drain pipe 17 in sequence, so as to maintain the reaction temperature in the reactor body 1. After the reaction is completed, when the reactor body 1 needs to be cooled, it is only necessary to replace the liquid entering the diverter plate 14 along the water inlet pipe 15 with cold water, and then the cold water circulates in the reactor body 1 along the cooling pipe 16. The cold water after absorbing heat becomes hot water, which can provide the reaction temperature for the condensation reaction of the next reactor again, thereby reducing the cooling and heating costs of nicotinamide and increasing the comfort of the staff.

[0020] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A nicotinamide preparation reactor, comprising a reactor body (1), characterized in that: A top plate (5) is provided on the top of the reactor body (1), a diverter plate (14) is provided on one side of the top plate (5), a water inlet pipe (15) is provided on the top of the diverter plate (14), a drain pipe (17) is provided on the top of the diverter plate (14) and is located on the opposite side of the water inlet pipe (15), and a cooling pipe (16) is provided on the bottom of the diverter plate (14).

2. A nicotinamide preparation reactor according to claim 1, characterized in that: A transmission column (7) is provided at the bottom of the reactor body (1), a rotating column (8) is provided at the top of the transmission column (7), a stirring column (9) is provided on the outside of the rotating column (8), a rotating ring (11) is provided on the outside of the stirring column (9), a stirring ring (12) is provided around the outside of the rotating ring (11), and a fixing plate (13) is provided on the top of the rotating column (8).

3. A nicotinamide preparation reactor according to claim 2, characterized in that: A limiting plate (10) is provided at one end of the stirring column (9).

4. A nicotinamide preparation reactor according to claim 1, characterized in that: A driving motor (2) is provided at the bottom of the reactor body (1), support columns (3) are provided around the bottom of the reactor body (1), a discharge pipe (4) is provided on one side of the bottom of the reactor body (1), and a feed pipe (6) is provided on the top of the top plate (5).

5. A nicotinamide preparation reactor according to claim 2, characterized in that: The number of the cooling tubes (16) is four, and the size of the bending angle of the cooling tubes (16) is matched with the size of the stirring ring (12).

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