Nicotinamide reaction kettle capable of recovering heat

Abstract

The utility model relates to the technical field of amide production, in particular to a nicotinamide reaction kettle capable of recovering heat, which comprises a reaction kettle and a heat recovery component, an inner reaction chamber is wrapped in the reaction kettle, and a thermal insulation material is arranged at the joint of the outer wall of the inner reaction chamber and the inner wall of the reaction kettle. A top opening hole is formed in the middle end of the top of the inner reaction chamber, a discharging notch is formed in the middle end of the bottom of the inner reaction chamber, a feeding notch is formed in one side of the top of the inner reaction chamber, and the whole inner reaction chamber is in a spherical shape; the device solves the technical problems that in the prior art, when an existing device achieves heat treatment reaction and a double-layer structure is used for heat preservation, heat generated in a reaction kettle is prone to diffusion, energy loss is caused, and when circulating water is used for recycling heat, a circulating water conveying channel is single, scale deposition and blockage are prone to occurring, and the service life of the device is prolonged. The cleaning is inconvenient, and the heat recovery of the whole device is easily influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of nicotinamide production, in particular to a nicotinamide reactor capable of recovering heat. Background Art

[0002] Nicotinamide reactors are commonly used in chemical production, primarily for chemical reactions, particularly those involving the synthesis of nicotinamide or its derivatives. These reactors typically possess properties such as high pressure, high temperature, and corrosion resistance to ensure safety and stability during the reaction.

[0003] When the existing device realizes the heat treatment reaction, when using the double-layer structure for insulation, the heat generated in the reactor is easy to dissipate, resulting in energy loss. When using circulating water to recover the heat, the transmission channel of the circulating water is relatively single, which is easy to be blocked by scale accumulation, making it difficult to clean and easily affecting the heat recovery of the entire device.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a nicotinamide reactor with heat recovery is proposed, in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the present invention is to provide a nicotinamide reactor capable of heat recovery, so as to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a nicotinamide reactor with heat recovery, comprising a reactor and a heat recovery assembly, wherein the interior of the reactor is wrapped with an inner reaction chamber, and a heat-insulating material is provided at the connection between the outer wall of the inner reaction chamber and the inner wall of the reactor, a top opening is provided at the middle end of the top of the inner reaction chamber, a discharge notch is provided at the middle end of the bottom of the inner reaction chamber, a feed notch is installed on one side of the top of the inner reaction chamber, and the inner reaction chamber is generally spherical in shape;

[0007] The heat recovery assembly includes a circulating liquid ring pipe, a water outlet pipe and a water inlet pipe. The circulating liquid ring pipe is provided in multiple groups, and the circulating liquid ring pipe is sleeved and attached to the outer wall of the sphere of the inner reaction chamber. One end of each group of the circulating liquid ring pipe is connected to the water outlet pipe, and the other end of the circulating liquid ring pipe is connected to the water inlet pipe.

[0008] The inner wall of the inner reaction chamber is arranged with heating plates; the inner side of the top opening is installed with a stirring and mixing mechanism, which includes a driving motor, a positioning plate, a transmission shaft and a mixing rod.

[0009] Furthermore, connecting ends are provided at the outer interfaces of the water outlet pipe and the water inlet pipe, and multiple groups of the connecting end interfaces are connected to external pipes.

[0010] Furthermore, the water outlet pipe is connected to the water inlet pipe through the circulating liquid ring pipe.

[0011] Furthermore, the outer side of the circulating liquid ring pipe is wrapped with thermal insulation material.

[0012] Furthermore, a positioning plate is embedded in the inner side of the top opening, and a driving motor is installed on the top of the positioning plate. The bottom shaft end of the driving motor is connected to a transmission shaft, and a mixing rod is arranged on the outer side of the transmission shaft.

[0013] Furthermore, the transmission shaft and the transmission shaft form a rotation transmission structure through a driving motor.

[0014] The utility model provides a nicotinamide reactor capable of heat recovery, which has the following beneficial effects:

[0015] 1. The utility model adopts an inner and outer double-layer structure for the entire reactor, and a jacket layer is provided adjacent to the reactor, and a heat-insulating material is provided in the jacket layer to reduce the outward diffusion of heat from the inside, thereby achieving a better heat-insulating effect;

[0016] The inner reaction chamber at the inner layer is spherical in shape. A circulating liquid ring pipe is arranged on the outside of the inner reaction chamber. The circulating liquid ring pipe surrounds the inner reaction chamber in a ring shape and is in close contact with the inner reaction chamber. Each independent circulating liquid ring pipe at a horizontal position has independent inlet and outlet pipes on both sides, so that each circulating liquid ring pipe can circulate liquid independently. When a problem occurs in one group of circulating liquid ring pipes, the other circulating liquid ring pipes can still work independently, and the correction adaptability is strong.

[0017] The opening and closing of the circulating liquid ring pipes at different levels on the outside can be adjusted according to the volume of the reaction materials inside the inner reaction chamber, so that it can adapt to the internal reactor and recover heat more accurately. The structural control logic is simple and the equipment has high reliability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. Those skilled in the art will readily understand that these drawings are merely used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0019] Figure 1 This is a schematic diagram of the internal structure of a heat recovery component of a nicotinamide reactor capable of heat recovery according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal cross-sectional structure of a nicotinamide reactor capable of heat recovery according to the present invention;

[0021] Figure 3The utility model is a schematic diagram of the internal structure of the inner reaction chamber of a nicotinamide reactor with heat recovery, viewed from above.

[0022] In the figure: 1. Reactor; 101. Top opening; 102. Feed slot; 103. Insulation material; 104. Inner reaction chamber; 105. Discharge slot; 2. Heat recovery assembly; 201. Circulating liquid loop; 202. Outlet pipe; 203. Inlet pipe; 204. Connecting end; 3. Drive motor; 301. Positioning plate; 302. Drive shaft; 303. Mixing rod; 4. External pipe; 5. Heating plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-3 The utility model provides a technical solution: a nicotinamide reactor with heat recovery, comprising a reactor 1 and a heat recovery assembly 2, wherein the interior of the reactor 1 is wrapped with an inner reaction chamber 104, and a heat-insulating material 103 is provided at the connection between the outer wall of the inner reaction chamber 104 and the inner wall of the reactor 1, a top opening 101 is provided at the middle end of the top of the inner reaction chamber 104, and a discharge notch 105 is provided at the middle end of the bottom of the inner reaction chamber 104, a feed notch 102 is installed on one side of the top of the inner reaction chamber 104, and the inner reaction chamber 104 is arranged in a spherical shape as a whole;

[0025] The heat recovery assembly 2 includes a circulating liquid loop pipe 201, a water outlet pipe 202, and a water inlet pipe 203. The circulating liquid loop pipe 201 is provided in multiple groups, and the circulating liquid loop pipe 201 is sleeved and attached to the outer wall of the sphere of the inner reaction chamber 104. One end of each group of circulating liquid loop pipes 201 is connected to the water outlet pipe 202, and the other end of the circulating liquid loop pipe 201 is connected to the water inlet pipe 203.

[0026] The inner wall of the inner reaction chamber 104 is arranged with a heating plate 5; a stirring and mixing mechanism is installed on the inner side of the top opening hole 101, and the stirring and mixing mechanism includes a driving motor 3, a positioning plate 301, a transmission shaft 302 and a mixing rod 303; a connecting end 204 is provided at the outer interface of the water outlet pipe 202 and the water inlet pipe 203, and multiple groups of connecting ends 204 interfaces are connected to the external pipe 4; the water outlet pipe 202 is interconnected through the circulating liquid ring pipe 201 and the water inlet pipe 203; the outer side of the circulating liquid ring pipe 201 is wrapped with an insulation material 103; a positioning plate 301 is embedded in the inner side of the top opening hole 101, and a driving motor 3 is installed on the top of the positioning plate 301, the bottom shaft end of the driving motor 3 is connected to the transmission shaft 302, and a mixing rod 303 is arranged on the outer side of the transmission shaft 302; the transmission shaft 302 and the transmission shaft 302 constitute a rotating transmission structure through the driving motor 3.

[0027] The entire reactor adopts an inner and outer double-layer structure, and a jacket layer is provided adjacent thereto, and a heat-insulating material 103 is provided in the jacket layer to reduce the outward diffusion of the inner heat and achieve a better heat-insulating effect;

[0028] The inner reaction chamber 104 at the inner layer is generally spherical in shape, and a circulating liquid ring pipe 201 is arranged on the outer side of the inner reaction chamber 104. The circulating liquid ring pipe 201 surrounds the inner reaction chamber 104 in an annular shape and is in close contact with the inner reaction chamber 104. Each independent circulating liquid ring pipe 201 at a horizontal position has independent inlet and outlet pipes on both sides, so that each circulating liquid ring pipe 201 can circulate liquid independently.

[0029] The opening and closing of the circulating liquid ring pipe 201 at different levels outside can be adjusted according to the volume of the reaction raw materials inside the inner reaction chamber 104, so that it can adapt to the internal reactor and recover heat more accurately. The structural control logic is simple and the equipment reliability and stability are high.

[0030] Working principle: For this type of nicotinamide reactor with heat recovery, a driving motor 3 is first provided on the top, and the driving motor 3 is used to drive the transmission shaft 302 and the mixing rod 303 connected to the bottom shaft to rotate, and at the same time, the heating plate 5 is started to preheat the inner cavity of the inner reaction chamber 104, and then the raw materials are added into the inner cavity of the inner reaction chamber 104 through the feeding slot 102 provided on the outer side of the top, so that the raw materials in the inner reaction chamber 104 are mixed and heated to react. At the same time, the connection end 204 in the heat recovery component 2 can be used to independently connect with the circulating water, and the circulating water is dispersed and independently entered into the circulating liquid ring pipe 201 by using the water inlet pipe 203. The circulating liquid ring pipe 201 absorbs the heat transferred from the inside, and the heat generated in the reactor is recovered to reduce heat loss.

[0031] The circulating liquid loop pipe 201 is arranged horizontally. The circulating liquid loop pipe 201 on different horizontal planes can be rotated according to the volume of the internal reaction raw materials to more accurately and centrally recover heat.

[0032] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the present invention without creative work should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A nicotinamide reactor with heat recovery, comprising a reactor (1) and a heat recovery component (2), characterized in that: The interior of the reactor (1) is wrapped with an inner reaction chamber (104), and a heat-insulating material (103) is provided at the connection between the outer wall of the inner reaction chamber (104) and the inner wall of the reactor (1), a top opening hole (101) is provided at the middle end of the top of the inner reaction chamber (104), and a discharge notch (105) is provided at the middle end of the bottom of the inner reaction chamber (104), a feed notch (102) is installed on one side of the top of the inner reaction chamber (104), and the inner reaction chamber (104) is arranged in a spherical shape as a whole; The heat recovery assembly (2) comprises a circulating liquid ring pipe (201), a water outlet pipe (202) and a water inlet pipe (203); the circulating liquid ring pipe (201) is provided in multiple groups, and the circulating liquid ring pipe (201) is sleeved and attached to the outer wall of the sphere of the inner reaction chamber (104); one end of each group of the circulating liquid ring pipe (201) is connected to the water outlet pipe (202), and the other end of the circulating liquid ring pipe (201) is connected to the water inlet pipe (203); The inner wall of the inner reaction chamber (104) is provided with a heating plate (5); the inner side of the top opening hole (101) is provided with a stirring and mixing mechanism, which comprises a driving motor (3), a positioning plate (301), a transmission shaft (302) and a mixing rod (303).

2. The heat-recoverable nicotinamide reactor according to claim 1, characterized in that: The outer interfaces of the water outlet pipe (202) and the water inlet pipe (203) are provided with connecting ends (204), and multiple groups of the connecting ends (204) are connected to external pipes (4).

3. The heat-recoverable nicotinamide reactor according to claim 1, characterized in that: The water outlet pipe (202) is connected to the water inlet pipe (203) through the circulating liquid ring pipe (201).

4. The heat-recoverable nicotinamide reactor according to claim 1, characterized in that: The outer side of the circulating liquid ring pipe (201) is wrapped with a heat-insulating material (103).

5. The heat-recoverable nicotinamide reactor according to claim 1, characterized in that: A positioning plate (301) is embedded inside the top opening hole (101), and a driving motor (3) is installed on the top of the positioning plate (301). The bottom shaft end of the driving motor (3) is connected to a transmission shaft (302), and a mixing rod (303) is arranged on the outside of the transmission shaft (302).

6. The heat-recoverable nicotinamide reactor according to claim 5, characterized in that: The transmission shaft (302) and the transmission shaft (302) form a rotation transmission structure through the driving motor (3).

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