Device for refining cyclohexanone by cyclohexanol dehydrogenation

Abstract

The utility model discloses a device for refining cyclohexanone by cyclohexanol dehydrogenation, which belongs to the technical field of cyclohexanone refining, and comprises a rectifying tower body and a heat preservation box, the heat preservation box is fixedly connected to the right side wall of the rectifying tower body, and a motor is fixedly connected to the middle of the bottom of the rectifying tower body. The tail end of a power output shaft of the motor is fixedly connected with a rotating shaft, the tail end of the rotating shaft penetrates through the rectifying tower body and extends to an inner cavity of the rectifying tower body, the lower side of the outer side wall of the rotating shaft is fixedly connected with a mounting frame, and the left side wall and the right side wall of the mounting frame are fixedly connected with scraping plates. According to the device for refining cyclohexanone through cyclohexanol dehydrogenation, the structural design is reasonable, impurities can be rapidly cleaned, meanwhile, the rectification effect is improved, heat on the heat conduction pipe is sucked away through clean water, the clean water is heated, and therefore the device can utilize waste heat, and the energy utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of refined cyclohexanone, in particular to a device for refining cyclohexanone by dehydrogenating cyclohexanol. Background Art

[0002] Cyclohexanone is an important organic chemical product with excellent properties such as high solubility and low volatility. As an excellent solvent, cyclohexanone can dissolve nitrocellulose, coatings, paints, etc. In addition, cyclohexanone can also be used as the main intermediate for the production of nylon, caprolactam, and adipic acid. It is also an important organic chemical raw material. In the production of cyclohexanone, it needs to be distilled and processed, and then distillation equipment needs to be used.

[0003] During the long-term use of the existing distillation tower, some organic solvents have a high solid impurity content, which makes the solid impurities often stick to the inner wall of the tower body, making it inconvenient to clean the solid impurities. In addition, during the production process of the distillation tower, the evaporated gas phase has a high temperature, and directly discharging the gas phase will cause heat loss, which is not energy-efficient. For this reason, we propose a device for dehydrogenating cyclohexanol to purify cyclohexanone. Utility Model Content

[0004] The utility model aims to provide a device for refining cyclohexanone by dehydrogenation of cyclohexanol, so as to solve the problems proposed in the above background technology that solid impurities are easy to stick to the distillation tower, and directly discharging the gas phase will cause heat loss and insufficient energy saving.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a device for dehydrogenating cyclohexanol to purify cyclohexanone, comprising a distillation tower body and an insulation box, wherein the insulation box is fixedly connected to the right side wall of the distillation tower body, a motor is fixedly connected to the middle of the bottom of the distillation tower body, a rotating shaft is fixedly connected to the end of the power output shaft of the motor, the end of the rotating shaft passes through the distillation tower body and extends to the inner cavity of the distillation tower body, a mounting frame is fixedly connected to the lower side of the outer wall of the rotating shaft, scrapers are fixedly connected to the left and right side walls of the mounting frame, and a stirring rod is fixedly connected to the upper side of the outer wall of the rotating shaft.

[0006] As a further description of the above technical solution:

[0007] A feeding pipe is fixedly connected to the upper side of the left side wall of the distillation tower body, and a feeding pipe is fixedly connected to the lower side of the left side wall of the distillation tower body.

[0008] As a further description of the above technical solution:

[0009] A heat conducting pipe is fixedly connected to the top of the distillation tower body, and the end of the heat conducting pipe passes through the insulation box and extends to the lower side of the right side wall of the insulation box.

[0010] As a further description of the above technical solution:

[0011] The bottom of the heat preservation box is fixedly connected with a water tank.

[0012] As a further description of the above technical solution:

[0013] A water outlet pipe is fixedly connected to the lower side of the right side wall of the water tank, and a valve is fixedly connected to the middle of the outer side wall of the water outlet pipe via a flange.

[0014] As a further description of the above technical solution:

[0015] The inner side wall of the heat preservation box is fixedly connected with a spiral tube, and the end of the spiral tube passes through the heat preservation box and extends to the inner cavity of the water tank.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The device for refining cyclohexanone by dehydrogenation of cyclohexanol starts a motor, so that the motor drives the rotating shaft to rotate, and then the rotating shaft drives the mounting frame to rotate, so that the scraper scrapes the impurities on the inner wall of the tower body, and then removes the impurities. At the same time, when the rotating shaft rotates, the stirring rod is also driven to rotate. Through the rotation of the stirring rod, the liquid phase in the tower body is continuously stirred, thereby avoiding precipitation, so that the device can quickly clean up the impurities and improve the distillation effect.

[0018] 2. The device for refining cyclohexanone by dehydrogenation of cyclohexanol allows the evaporated gas phase to enter the heat-conducting pipe, so that the heat in the gas phase is dissipated to the heat-conducting pipe, and then by injecting clean water into the spiral pipe, the clean water spirals down from the heat-conducting pipe along the spiral pipe, and then the clean water absorbs the heat on the heat-conducting pipe and heats itself, and finally the heated clean water flows into the water tank for storage for later use, so that the device can utilize waste heat and improve energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for refining cyclohexanone by dehydrogenation of cyclohexanol proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of a device for refining cyclohexanone by dehydrogenation of cyclohexanol proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of a device for refining cyclohexanone by dehydrogenating cyclohexanol proposed by the utility model;

[0022] Figure 4 The utility model discloses a top view and a cross-sectional structure schematic diagram of a device for refining cyclohexanone by dehydrogenating cyclohexanol.

[0023] In the figure: 100, distillation tower body; 110, motor; 120, rotating shaft; 130, mounting frame; 140, scraper; 150, stirring rod; 160, feeding pipe; 170, discharging pipe; 180, heat transfer pipe; 200, insulation box; 210, water tank; 220, water outlet pipe; 230, valve; 240, spiral pipe. DETAILED DESCRIPTION

[0024] 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.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides a device for refining cyclohexanone by dehydrogenation of cyclohexanol, which can quickly clean up impurities, improve the distillation effect, and utilize waste heat to improve energy utilization. Figure 1-4 , comprising a distillation tower body 100 and an insulation box 200;

[0028] See also Figure 3-4A motor 110 is fixedly connected to the middle of the bottom of the distillation tower body 100. The motor 110 is used to drive the rotating shaft 120 to rotate. The end of the power output shaft of the motor 110 is fixedly connected to the rotating shaft 120. The end of the rotating shaft 120 penetrates the distillation tower body 100 and extends to the inner cavity of the distillation tower body 100. The rotating shaft 120 is used to drive the mounting frame 130 to rotate. The lower side of the outer wall of the rotating shaft 120 is fixedly connected to the mounting frame 130. The mounting frame 130 is used to install the scraper 140. The left and right side walls of the mounting frame 130 are fixedly connected to the scraper 140. The scraper 140 For scraping off impurities on the inner wall of the tower body, a stirring rod 150 is fixedly connected to the upper side of the outer wall of the rotating shaft 120, and the stirring rod 150 is used to stir the liquid phase in the tower body. By starting the motor 110, the motor 110 drives the rotating shaft 120 to rotate, and then the rotating shaft 120 drives the mounting frame 130 to rotate, so that the scraper 140 scrapes off the impurities on the inner wall of the tower body, and then removes the impurities. At the same time, when the rotating shaft 120 rotates, it also drives the stirring rod 150 to rotate. By rotating the stirring rod 150, the liquid phase in the tower body is continuously stirred, thereby avoiding precipitation;

[0029] Please refer again Figure 1-4 The insulation box 200 is fixedly connected to the right side wall of the distillation tower body 100, and the insulation box 200 is used to install the spiral tube 240;

[0030] In summary, the device can quickly clean up impurities and improve the distillation effect.

[0031] Please refer again Figure 1-4 A loading pipe 160 is fixedly connected to the upper side of the left side wall of the distillation tower body 100 , and a lowering pipe 170 is fixedly connected to the lower side of the left side wall of the distillation tower body 100 . Materials can be loaded and unloaded through the loading pipe 160 and the lowering pipe 170 .

[0032] Please refer again Figure 1-4 A heat pipe 180 is fixedly connected to the top of the distillation tower body 100 , and the end of the heat pipe 180 passes through the insulation box 200 and extends to the lower side of the right side wall of the insulation box 200 , and heat can be conducted through the heat pipe 180 .

[0033] Please refer again Figure 1-4 The bottom of the heat preservation box 200 is fixedly connected to a water tank 210, and hot water can be stored in the water tank 210.

[0034] Please refer again Figure 1-4 A water outlet pipe 220 is fixedly connected to the lower side of the right side wall of the water tank 210 , and a valve 230 is fixedly connected to the middle of the outer wall of the water outlet pipe 220 through a flange, and hot water can be discharged through the water outlet pipe 220 .

[0035] Please refer again Figure 3-4The inner wall of the heat preservation box 200 is fixedly connected with a spiral tube 240 , and the end of the spiral tube 240 passes through the heat preservation box 200 and extends to the inner cavity of the water tank 210 . The spiral tube 240 can make the clean water better absorb the heat on the heat conduction pipe 180 .

[0036] In summary, the device can utilize waste heat and improve energy utilization.

[0037] During specific use, personnel in this technical field first add the raw materials to the interior of the distillation tower body 100 through the feeding pipe 160, and then distill the raw materials through the distillation tower body 100. During distillation, by starting the motor 110, the motor 110 drives the rotating shaft 120 to rotate, and then the rotating shaft 120 drives the mounting frame 130 to rotate, so that the scraper 140 scrapes the impurities on the inner wall of the tower body. At the same time, when the rotating shaft 120 rotates, it will also drive the stirring rod 150 to rotate. Through the rotation of the stirring rod 150, the liquid phase in the tower body is continuously stirred, and the gas phase generated by the distillation enters the heat conducting pipe 180, so that the heat in the gas phase is dissipated to the heat conducting pipe 180, and then by injecting clean water into the spiral tube 240, the clean water spirals down from the heat conducting pipe 180 along the spiral tube 240, and then the clean water absorbs the heat on the heat conducting pipe 180 and heats itself. Finally, the heated clean water flows into the water tank 210 for storage for later use.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A device for refining cyclohexanone by dehydrogenation of cyclohexanol, characterized in that: The invention comprises a distillation tower body (100) and a heat preservation box (200), wherein the heat preservation box (200) is fixedly connected to the right side wall of the distillation tower body (100), a motor (110) is fixedly connected to the middle of the bottom of the distillation tower body (100), a rotating shaft (120) is fixedly connected to the end of the power output shaft of the motor (110), the end of the rotating shaft (120) passes through the distillation tower body (100) and extends to the inner cavity of the distillation tower body (100), a mounting frame (130) is fixedly connected to the lower side of the outer wall of the rotating shaft (120), a scraper (140) is fixedly connected to the left and right side walls of the mounting frame (130), and a stirring rod (150) is fixedly connected to the upper side of the outer wall of the rotating shaft (120).

2. The device for refining cyclohexanone by dehydrogenation of cyclohexanol according to claim 1, characterized in that: A feeding pipe (160) is fixedly connected to the upper side of the left side wall of the distillation tower body (100), and a feeding pipe (170) is fixedly connected to the lower side of the left side wall of the distillation tower body (100).

3. The device for refining cyclohexanone by dehydrogenation of cyclohexanol according to claim 1, characterized in that: A heat conducting pipe (180) is fixedly connected to the top of the distillation tower body (100), and the end of the heat conducting pipe (180) passes through the insulation box (200) and extends to the lower side of the right side wall of the insulation box (200).

4. The device for refining cyclohexanone by dehydrogenation of cyclohexanol according to claim 1, characterized in that: The bottom of the heat preservation box (200) is fixedly connected to a water tank (210).

5. The device for refining cyclohexanone by dehydrogenation of cyclohexanol according to claim 4, characterized in that: A water outlet pipe (220) is fixedly connected to the lower side of the right side wall of the water tank (210), and a valve (230) is fixedly connected to the middle of the outer side wall of the water outlet pipe (220) via a flange.

6. The device for refining cyclohexanone by dehydrogenation of cyclohexanol according to claim 1, characterized in that: The inner side wall of the heat preservation box (200) is fixedly connected with a spiral tube (240), and the end of the spiral tube (240) passes through the heat preservation box (200) and extends to the inner cavity of the water tank (210).

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