Purification device for cyclohexanone production

Abstract

The utility model relates to the technical field of cyclohexanone production, and discloses a purification device for cyclohexanone production, which comprises a barrel, a feed pipe is fixedly mounted on the upper surface of the barrel, a heat insulation layer is arranged on one side of the barrel, a first filter screen is fixedly connected to the inner side wall of the barrel, a refrigeration pipe is arranged on one side of the first filter screen, and a second filter screen is arranged on the other side of the refrigeration pipe. A first filter screen is arranged on one side of the first filter screen, a refrigeration pipe is arranged on one side of the first filter screen, a second filter screen is arranged on one side of the refrigeration pipe, a backflow pipe is fixedly connected to the bottom of the barrel, an infusion pump is fixedly connected to one end of the backflow pipe, and a drainage pipe is fixedly connected to one side of the infusion pump. When the device is used, purification liquid enters the device through the first filter screen, then cyclohexanone and cyclohexanol with a higher melting point on a melting point critical value are condensed and separated out under the action of the refrigeration pipe, and then separation is formed through filtration of the second filter screen, so that the effect of cold extraction optimization and purification is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cyclohexanone production, in particular to a purification device for cyclohexanone production. Background Art

[0002] Cyclohexanone is an organic compound, a saturated cyclic ketone with a carbonyl carbon atom within a six-membered ring. It is a colorless, transparent liquid with an earthy odor. As storage time increases, impurities are generated and the color changes, ranging from watery white to grayish yellow, with a strong pungent odor. In industry, it is mainly used as a raw material and solvent for organic synthesis. For example, it can dissolve nitrocellulose, coatings, and paints. Generally, cyclohexanone is produced by oxidizing cyclohexanol, so the product will be mixed with cyclohexanol and needs to be purified.

[0003] Existing purification devices for cyclohexanone production generally adopt heating distillation for purification. However, cyclohexanone and cyclohexanol have similar boiling points, so heating distillation will cause loss of cyclohexanone. Therefore, cold extraction can be tried. In addition, general purification devices also lack the function of circulating reflux for full purification. Therefore, the utility model provides a purification device for cyclohexanone production. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a purification device for cyclohexanone production, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a purification device for cyclohexanone production, comprising a cylinder, a feed pipe is fixedly installed on the upper surface of the cylinder, an insulation layer is provided on one side of the cylinder, a first filter screen is fixedly connected to the inner wall of the cylinder, a refrigeration pipe is provided on one side of the first filter screen, a second filter screen is provided on one side of the refrigeration pipe, a return pipe is fixedly connected to the bottom of the cylinder, a liquid pump is fixedly connected to one end of the return pipe, and a drainage pipe is fixedly connected to one side of the liquid pump.

[0008] Preferably, an air guide tube is fixedly mounted on the upper surface of the cylinder, and one end of the air guide tube is fixedly connected to the adsorption layer.

[0009] Preferably, a control panel is provided on one side of the cylinder.

[0010] Preferably, a liquid guide tube is fixedly connected to one side of the cylinder, and a flushing nozzle is fixedly connected to one end of the liquid guide tube.

[0011] Preferably, a cleaning hole is fixedly installed on one side of the cylinder.

[0012] Preferably, a temperature sensor is fixedly installed on the bottom of the cylinder.

[0013] Preferably, a liquid outlet pipe is fixedly installed at the bottom of the cylinder, and one end of the liquid outlet pipe is fixedly connected to a discharge valve.

[0014] Preferably, a mounting base is fixedly mounted on the bottom of the cylinder.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a purification device for cyclohexanone production, which has the following beneficial effects:

[0017] The purification device for cyclohexanone production maintains the internal temperature during use by providing a heat-insulating layer. The first filter, the refrigeration pipe, and the second filter are cooperatively provided. When in use, the purified liquid enters the device through the first filter. Then, under the action of the refrigeration pipe, the cyclohexanone and the cyclohexanol with a higher melting point condense and precipitate at the critical melting point. Then, the cyclohexanol is filtered and separated by the second filter, thereby achieving the effect of cold extraction and optimization purification. The reflux pipe, the liquid extraction pump, and the drainage pipe are cooperatively provided. When in use, the cyclohexanol after preliminary purification passes through the reflux pipe and is extracted by the liquid extraction pump. It re-enters the device through the drainage tube for purification again, thereby achieving the effect of repeated and sufficient purification. Through the coordinated setting of the air guide tube and the adsorption layer, the volatile gas inside the device passes through the adsorption layer in the air guide tube when in use, thereby achieving the effect of preliminary treatment of the tail gas. Through the coordinated setting of the liquid guide tube and the flushing nozzle, the liquid guide tube guides the cleaning and flushing liquid through the flushing nozzle when in use, thereby facilitating the cleaning of the inside of the device. Through the setting of the cleaning hole, it facilitates the collection and cleaning of the precipitated cyclohexanol when in use. Through the setting of the temperature sensor, it monitors the internal temperature of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of the utility model.

[0020] In the figure: 1, cylinder 2, feed pipe 3, insulation layer 4, first filter 5, refrigeration pipe 6, second filter 7, reflux pipe 8, liquid pump 9, drainage pipe 10, air guide pipe 11, adsorption layer 12, control panel 13, liquid drainage pipe 14, flushing nozzle 15, cleaning hole 16, temperature sensor 17, liquid outlet pipe 18, discharge valve 19, mounting base. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-2 The utility model provides a technical solution: it includes a cylinder 1, a feed pipe 2 is fixedly installed on the upper surface of the cylinder 1, a heat preservation layer 3 is provided on one side of the cylinder 1, and the heat preservation layer 3 is provided to maintain the internal temperature during use. A first filter screen 4 is fixedly connected to the inner wall of the cylinder 1, a refrigeration pipe 5 is provided on one side of the first filter screen 4, and a second filter screen 6 is provided on one side of the refrigeration pipe 5. Through the coordinated arrangement of the first filter screen 4, the refrigeration pipe 5 and the second filter screen 6, the purified liquid enters the device through the first filter screen 4 during use, and then acts on the refrigeration pipe 5. Under the condition that cyclohexanone and cyclohexanol have a higher melting point, condense and precipitate at the critical value of melting point, and then separate by filtering through the second filter screen 6, thereby playing the role of cold extraction optimization and purification. The bottom of the cylinder 1 is fixedly connected with a reflux pipe 7, one end of the reflux pipe 7 is fixedly connected with a liquid pump 8, and one side of the liquid pump 8 is fixedly connected with a drainage pipe 9. Through the coordinated arrangement of the reflux pipe 7, the liquid pump 8 and the drainage pipe 9, the cyclohexanol after preliminary purification passes through the reflux pipe 7 and re-enters the device through the drainage pipe 9 under the extraction action of the liquid pump 8 for re-purification during use, thereby playing the role of repeated purification. The upper surface of the cylinder 1 is fixedly mounted with an air guide tube 10, one end of the air guide tube 10 is fixedly connected to an adsorption layer 11, and the air guide tube 10 and the adsorption layer 11 are arranged in cooperation, and when in use, the volatile gas inside the device passes through the adsorption layer 11 in the air guide tube 10, thereby playing a role in preliminary treatment of the tail gas, and a control panel 12 is provided on one side of the cylinder 1, and a liquid guide tube 13 is fixedly connected to one side of the cylinder 1, and one end of the liquid guide tube 13 is fixedly connected to a flushing nozzle 14, and the liquid guide tube 13 and the flushing nozzle 14 are arranged in cooperation, and when in use, the liquid guide tube 1 3. The cleaning and flushing liquid is guided through the flushing nozzle 14, thereby facilitating the cleaning of the interior of the device. A cleaning hole 15 is fixedly installed on one side of the cylinder 1. The setting of the cleaning hole 15 facilitates the collection and cleaning of precipitated cyclohexanol during use. A temperature sensor 16 is fixedly installed on the bottom of the cylinder 1. The setting of the temperature sensor 16 facilitates the monitoring of the internal temperature of the device during use. A liquid outlet pipe 17 is fixedly installed on the bottom of the cylinder 1. One end of the liquid outlet pipe 17 is fixedly connected to a discharge valve 18. A mounting base 19 is fixedly installed on the bottom of the cylinder 1.

[0023] In summary, the purification device for cyclohexanone production maintains the internal temperature during use through the setting of the heat preservation layer 3. Through the coordinated setting of the first filter screen 4, the refrigeration pipe 5 and the second filter screen 6, the purified liquid enters the device through the first filter screen 4 during use. Then, under the action of the refrigeration pipe 5, the cyclohexanone and cyclohexanol with a higher melting point condense and precipitate at the critical value of the melting point, and then are separated by filtering through the second filter screen 6, thereby playing the role of cold extraction and optimization purification. Through the coordinated setting of the reflux pipe 7, the liquid extraction pump 8 and the drainage pipe 9, the cyclohexanol after preliminary purification during use passes through the reflux pipe 7 under the extraction action of the liquid extraction pump 8 and is then drawn out through the drainage pipe 9. The flow tube 9 re-enters the device for purification again, thereby playing the role of repeated and sufficient purification. Through the coordinated setting of the air guide tube 10 and the adsorption layer 11, the volatile gas inside the device passes through the adsorption layer 11 in the air guide tube 10 when in use, thereby playing the role of preliminary treatment of the tail gas. Through the coordinated setting of the liquid introduction tube 13 and the flushing nozzle 14, when in use, the liquid introduction tube 13 guides the cleaning and flushing liquid through the flushing nozzle 14, thereby playing the role of facilitating the cleaning of the inside of the device. Through the setting of the cleaning hole 15, it plays the role of facilitating the collection and cleaning of the precipitated cyclohexanol when in use. Through the setting of the temperature sensor 16, it plays the role of monitoring the internal temperature of the device when in use.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A purification device for cyclohexanone production, comprising a cylinder (1), characterized in that: A feed pipe (2) is fixedly mounted on the upper surface of the cylinder (1), a heat-insulating layer (3) is provided on one side of the cylinder (1), a first filter screen (4) is fixedly connected to the inner wall of the cylinder (1), a refrigeration pipe (5) is provided on one side of the first filter screen (4), a second filter screen (6) is provided on one side of the refrigeration pipe (5), a return pipe (7) is fixedly connected to the bottom of the cylinder (1), one end of the return pipe (7) is fixedly connected to a liquid extraction pump (8), and one side of the liquid extraction pump (8) is fixedly connected to a drainage pipe (9).

2. A purification device for cyclohexanone production according to claim 1, characterized in that: An air guide tube (10) is fixedly mounted on the upper surface of the cylinder (1), and one end of the air guide tube (10) is fixedly connected to an adsorption layer (11).

3. A purification device for cyclohexanone production according to claim 1, characterized in that: A control panel (12) is provided on one side of the cylinder (1).

4. A purification device for cyclohexanone production according to claim 1, characterized in that: A liquid guide tube (13) is fixedly connected to one side of the cylinder (1), and a flushing nozzle (14) is fixedly connected to one end of the liquid guide tube (13).

5. The purification device for cyclohexanone production according to claim 1, characterized in that: A cleaning hole (15) is fixedly mounted on one side of the cylinder (1).

6. A purification device for cyclohexanone production according to claim 1, characterized in that: A temperature sensor (16) is fixedly mounted on the bottom of the cylinder (1).

7. A purification device for cyclohexanone production according to claim 1, characterized in that: A liquid outlet pipe (17) is fixedly installed at the bottom of the cylinder (1), and one end of the liquid outlet pipe (17) is fixedly connected to a discharge valve (18).

8. The purification device for cyclohexanone production according to claim 1, characterized in that: A mounting base (19) is fixedly mounted on the bottom of the cylinder (1).

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