Cooling device for chlorobenzonitrile rectifying tower

Abstract

The utility model discloses a cooling device for an o-chlorobenzonitrile rectifying tower, which comprises a rectifying tower, one side of the rectifying tower is fixedly connected with a water circulation mechanism which is used for cleaning an inner box and recycling water used for cleaning, the water circulation mechanism comprises the inner box, a drain pipe, a water inlet hole, a settling box and a storage box, the inner box is fixedly connected in the rectifying tower, and the inner box is fixedly connected in the rectifying tower. A drainage pipe is fixedly connected to one side of the inner box, the drainage pipe is sleeved with a water inlet hole, a grid baffle is driven to slide in a sliding groove through up-down sliding of a spoiler, circulation of a flow guide hole in the settling box is controlled, old liquid is discharged, and a water source can be recycled; water for cleaning the inner box passes through a filter plate and an activated carbon plate, impurities in the water are filtered, the accumulation degree of the impurities in the inner box is observed through an observation opening in the storage box, and therefore the storage box is drawn out of the settling box to be cleaned, and water resources for flushing and cleaning are recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of o-chlorobenzonitrile processing, in particular to a cooling device for an o-chlorobenzonitrile distillation tower. Background Art

[0002] o-Chlorobenzonitrile is an organic synthesis intermediate. It is mainly used to synthesize the dye intermediate 2-cyano-4-nitroaniline, and in the pharmaceutical industry to synthesize new antimalarial drugs such as nitroquine. At present, there are 6 different raw material routes for the synthesis of o-chlorobenzonitrile (CBN). They are: the synthetic routes using o-chlorotoluene as raw material, o-chlorobenzaldehyde oxime as raw material, o-chlorobenzaldehyde as raw material, o-chlorobenzoic acid as raw material, o-chloroaniline as raw material, and o-chlorobenzylamine as raw material.

[0003] Existing cooling devices for o-chlorobenzonitrile distillation towers, for example, a cooling device for o-chlorobenzonitrile distillation tower disclosed in Chinese patent application CN218248590U, records that: by arranging a cooling chamber body, a refrigerator and a water inlet pipe, the effect of cooling the distillation tower is achieved, the water inlet valve is opened, water is poured into the cooling chamber body through the water inlet pipe, the refrigerator cools the water under the action of the power device, and the low-temperature water flows in the cooling chamber body to cool the inner box, the water outlet valve is opened, and the water after heat exchange is discharged through the water outlet pipe, so as to cool the distillation tower.

[0004] When the cooling device for the o-chlorobenzonitrile distillation tower is used, the distillation tower must be thoroughly cleaned to remove the residual materials and impurities in the tower to ensure the quality of the product produced next time and the normal operation of the equipment. When cleaning, the inner box is cleaned by flushing or immersing. When the cleaning is completed, the water will be discharged from the inner box. The inner box should be cleaned regularly, and the cooling cavity should also be filled with water regularly. The use of the equipment requires a large amount of water, which can easily cause a waste of water resources. In addition, the refrigerator will cause a decrease in refrigeration efficiency when working continuously for a long time, affecting the refrigeration speed and effect, and it is easy to cause damage and unable to operate normally, so that the equipment is forced to stop running, delaying work efficiency. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a cooling device for an o-chlorobenzonitrile distillation tower, which has the advantages of recycling water resources and solves the problem of wasting water when cleaning equipment.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of not only solving the problem of saving water when cleaning equipment, but also ensuring high cooling efficiency, the utility model provides the following technical solutions: a cooling device for a chlorobenzonitrile distillation tower, comprising a distillation tower, one side of the distillation tower is fixedly connected to a water circulation mechanism for cleaning an inner box and recovering water used for cleaning, the water circulation mechanism comprises an inner box, a drain pipe, a water inlet, a sedimentation box and a storage box, the inner box is fixedly connected in the distillation tower, the drain pipe passes through the water inlet and is fixedly connected to one side of the inner box, one side of the sedimentation box is fixedly connected to a drain pipe, and the storage box is slidably connected in the sedimentation box.

[0009] As a preferred solution of the cooling device for the o-chlorobenzonitrile distillation tower of the utility model, an observation port is embedded and installed on the storage box, and a cylinder is fixedly connected to one side of the precipitation box.

[0010] As a preferred solution of the cooling device for the o-chlorobenzonitrile distillation tower described in the utility model, a lifting rod is slidably connected in the cylinder, a spoiler is fixedly connected to one end of the lifting rod away from the cylinder, a sliding block is fixedly connected to one side of the spoiler, a sliding track is provided on the inner wall of the sedimentation box, and the sliding block is slidably connected in the sliding track.

[0011] As a preferred solution of the cooling device for the o-chlorobenzonitrile distillation tower of the utility model, a filter plate is fixedly connected to the spoiler, an activated carbon plate is slidably connected inside the spoiler, and a baffle plate is fixedly connected to the lower surface of the spoiler.

[0012] As a preferred solution of the cooling device for o-chlorobenzonitrile distillation tower of the utility model, the baffle plate is slidably connected in the sliding groove, and a guide hole is opened on the sedimentation box on one side of the sliding groove.

[0013] As a preferred solution of the cooling device for the o-chlorobenzonitrile distillation tower described in the utility model, a guide pipe is sleeved in the guide hole, one end of the guide pipe away from the guide hole is fixedly connected in the cooling cavity, a square core tube is fixedly connected in the cooling cavity, a water pump is fixedly connected to the square core tube, spoiler blocks are staggered and slidably connected to the square core tube, and heat dissipation grooves are provided on the spoiler blocks.

[0014] Compared with the known prior art, the technical solution provided by the utility model has the following beneficial effects:

[0015] 1. The up and down sliding of the spoiler drives the baffle plate to slide in the sliding groove, controls the flow of the guide holes on the sedimentation box, discharges the old liquid and recycles the water source. When the spoiler slides into the sedimentation box, the water used for cleaning the inner box passes through the filter plate and the activated carbon plate, and the impurities in the water are filtered and processed. The accumulation degree of internal impurities is observed through the observation port on the storage box, so that the storage box is drawn out from the sedimentation box for cleaning, and the water resources used for flushing and cleaning are recycled to reduce the waste of water resources;

[0016] 2. The treated water is discharged into the cooling chamber in the distillation tower through the guide pipe, and the water is pumped into the square tube through the water pump on the other side of the distillation tower. The spoiler blocks are staggered on both sides of the square tube to increase the circulation time of the water in the square tube. The heat dissipation groove is set to increase the contact area of ​​the water, and the water in the square tube is cooled. Through the effect of water circulation cooling, the burden of the refrigerator under long-term operation is reduced and the cooling efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional overall structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the water circulation mechanism of the utility model;

[0020] Figure 3 This is a structural schematic diagram of the sedimentation box of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the spoiler of the utility model.

[0022] In the figure: 100, distillation tower; 201, water circulation mechanism; 202, inner box; 203, drain pipe; 203, water inlet hole; 204, sedimentation box; 205, storage box; 206, observation port; 207, cylinder; 208, lifting rod; 209, spoiler; 210, sliding block; 211, sliding track; 212, filter plate; 213, activated carbon plate; 214, baffle plate; 215, sliding groove; 216, guide hole; 217, guide pipe; 218, cooling chamber; 219, square core tube; 220, water pump; 221, spoiler block; 222, heat sink. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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] The utility model is further described below in conjunction with embodiments.

[0025] Example 1

[0026] Reference Figure 1-3 , which is the first embodiment of the utility model, provides a cooling device for a chlorobenzonitrile distillation tower, the cooling device for a chlorobenzonitrile distillation tower comprising a distillation tower 100, a water circulation mechanism 200 is fixedly connected to one side of the distillation tower 100, and is used to clean an inner box 201 and recycle water used for cleaning. The water circulation mechanism 200 comprises an inner box 201, a drain pipe 202, a water inlet 203, a sedimentation box 204 and a storage box 205. The inner box 201 is fixedly connected in the distillation tower 100, the drain pipe 202 is fixedly connected to one side of the inner box 201, the drain pipe 202 is sleeved in the water inlet 203, the drain pipe 202 is fixedly connected to one side of the sedimentation box 204, and the storage box 205 is slidably connected in the sedimentation box 204. By discharging the old liquid in the inner box 201 from the drain pipe 202 along the water outlet pipe and injecting water into the inner box 201 through the water inlet pipe, the impurities and old liquid inside the inner box 201 can be effectively washed away.

[0027] An observation port 206 is fixedly connected to the storage box 205, and a cylinder 207 is fixedly connected to one side of the sedimentation box 204. The accumulation degree of internal impurities can be observed through the observation port 206 on the storage box 205, so that the storage box 205 can be pulled out of the sedimentation box 204 for cleaning.

[0028] A lifting rod 208 is slidably connected inside the cylinder 207, and a spoiler 209 is fixedly connected to one end of the lifting rod 208 away from the cylinder 207. A sliding block 210 is fixedly connected to one side of the spoiler 209. A sliding track 211 is provided on the inner wall of the sedimentation box 204, and the sliding block 210 is slidably connected inside the sliding track 211. By controlling the lifting and lowering of the lifting rod 208 inside the cylinder 207, the sliding block 210 on the lifting rod 208 is driven to move up and down along the sliding track 211 on the sedimentation box 204.

[0029] During use, by controlling the lifting and lowering of the lifting rod 208 in the cylinder 207, the sliding block 210 on the lifting rod 208 is driven to move up and down along the sliding track 211 on the sedimentation box 204, and the up and down sliding of the spoiler 209 drives the baffle plate 214 to slide in the sliding groove 215, and the flow of the guide hole 216 on the sedimentation box 204 is controlled to discharge the old liquid and recover the water source. When the spoiler 209 slides into the sedimentation box 204, the water used for cleaning the inner box 201 passes through the filter plate 212 and the activated carbon plate 213, and the impurities in the water are filtered and processed. The accumulation degree of internal impurities is observed through the observation port 206 on the storage box 205, so that the storage box 205 is pulled out of the sedimentation box 204 for cleaning.

[0030] Example 2

[0031] Reference Figure 1-4 , which is the second embodiment of the utility model, provides a cooling device for a chlorobenzonitrile distillation tower. This cooling device for a chlorobenzonitrile distillation tower includes a filter plate 212 fixedly connected to a spoiler 209, an activated carbon plate 213 slidably connected inside the spoiler 209, and a baffle plate 214 fixedly connected to the lower surface of the spoiler 209. When the spoiler 209 slides into the sedimentation box 204, the water for cleaning in the inner box 201 passes through the filter plate 212 and the activated carbon plate 213, and the impurities in the water are filtered and processed.

[0032] The baffle plate 214 is slidably connected in the sliding groove 215, and a guide hole 216 is opened on the sedimentation box 204 on one side of the sliding groove 215. The baffle plate 214 is driven to slide in the sliding groove 215 by the up and down sliding of the spoiler plate 209 to control the flow of the guide hole 216 on the sedimentation box 204.

[0033] A guide pipe 217 is sleeved in the guide hole 216, and one end of the guide pipe 217 away from the guide hole 216 is fixedly connected to the cooling chamber 218. A square core tube 219 is fixedly connected in the cooling chamber 218, and a water pump 220 is fixedly connected to the square core tube 219. A spoiler block 221 is staggered and slidably connected to the square core tube 219, and a heat dissipation groove 222 is provided on the spoiler block 221. The treated water is discharged into the cooling chamber 218 in the distillation tower 100 through the guide pipe 217, and the water is pumped into the square core tube 219 by the water pump 220 on the other side of the distillation tower 100. The spoiler blocks 221 are staggered and inserted on both sides of the square core tube 219 to increase the circulation time of water in the square core tube 219. The heat dissipation groove 222 is set to increase the contact area of ​​water, and the water in the square core tube 219 is cooled. Through the effect of water circulation cooling, the burden of the refrigerator under long-term operation is reduced and the cooling efficiency is improved.

[0034] During use, the treated water is discharged into the cooling chamber 218 in the distillation tower 100 through the guide pipe 217, and the water is pumped into the square core tube 219 through the water pump 220 on the other side of the distillation tower 100. The spoiler blocks 221 are staggered on both sides of the square core tube 219 to increase the circulation time of the water in the square core tube 219. The heat dissipation grooves 222 are provided to increase the contact area of ​​water and cool the water in the square core tube 219. Through the effect of water circulation cooling, the burden of the refrigerator under long-term operation is reduced and the cooling efficiency is improved.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling device for an o-chlorobenzonitrile distillation tower, comprising a distillation tower (100), characterized in that: A water circulation mechanism (200) is fixedly connected to one side of the distillation tower (100); The water circulation mechanism (200) comprises an inner box (201), a drainage pipe (202), a water inlet (203), a sedimentation box (204) and a storage box (205); the inner box (201) is fixedly connected in the distillation tower (100); the drainage pipe (202) passes through the water inlet (203) and is fixedly connected to one side of the inner box (201); one side of the sedimentation box (204) is fixedly connected with the drainage pipe (202); and the storage box (205) is slidably connected in the sedimentation box (204).

2. A cooling device for an o-chlorobenzonitrile distillation tower according to claim 1, characterized in that: An observation port (206) is embedded in the storage box (205), and a cylinder (207) is fixedly connected to one side of the sedimentation box (204).

3. A cooling device for an o-chlorobenzonitrile distillation tower according to claim 2, characterized in that: A lifting rod (208) is slidably connected inside the cylinder (207), one end of the lifting rod (208) away from the cylinder (207) is fixedly connected to a spoiler (209), one side of the spoiler (209) is fixedly connected to a sliding block (210), and a sliding track (211) is provided on the inner wall of the sedimentation box (204), and the sliding block (210) is slidably connected inside the sliding track (211).

4. A cooling device for an o-chlorobenzonitrile distillation tower according to claim 3, characterized in that: A filter plate (212) is fixedly connected to the spoiler (209), an activated carbon plate (213) is slidably connected inside the spoiler (209), and a baffle plate (214) is fixedly connected to the lower surface.

5. A cooling device for an o-chlorobenzonitrile distillation tower according to claim 4, characterized in that: The baffle plate (214) is slidably connected in the sliding groove (215), and a guide hole (216) is provided on the sedimentation box (204).

6. A cooling device for an o-chlorobenzonitrile distillation tower according to claim 5, characterized in that: A flow guide pipe (217) is sleeved in the flow guide hole (216); a cooling chamber (218) is provided between the distillation tower (100) and the inner box (201); one end of the flow guide pipe (217) away from the flow guide hole (216) is fixedly connected to the cooling chamber (218); a square core tube (219) is fixedly connected in the cooling chamber (218); a water pump (220) is fixedly connected to the square core tube (219); spoiler blocks (221) are staggeredly slidably connected to the square core tube (219); and heat dissipation grooves (222) are provided on the spoiler blocks (221).

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