CN215610593U - Device for filtering and recovering hydration catalyst in cyclohexanol separation system - Google Patents

Abstract

The utility model discloses a device for filtering and recovering a hydration catalyst in a cyclohexanol separation system, which comprises a rough filtering recovery container, a T101 cyclohexanol separation tower and a fine filtering recovery container; a rough filtration recovery container: the number of the coarse filtration recovery pipes is two, the coarse filtration recovery pipes arranged on the bottom surface of the coarse filtration recovery container are connected with a water inlet pipe of the first circulating pump, and a water outlet pipe of the first circulating pump is connected with a material inlet pipe of the recovery tank; t101 cyclohexanol separation column: the feeding pipe arranged on the outer arc surface of the T101 cyclohexanol separation tower is simultaneously connected with rough filtering waste discharging pipes at the bottom ends of the outer arc surfaces of the two rough filtering recovery containers, and the discharging pipe on the bottom surface of the T101 cyclohexanol separation tower is connected with the water inlet pipe of the second circulating pump; this hydration catalyst filters recovery unit in cyclohexanol piece-rate system can carry out dual filtration to hydration catalyst and retrieve, promotes hydration catalyst's recycle ratio, can also produce the filter effect that promotes first ceramic filtration membrane at centrifugal force in filtering process, and work efficiency is high.

Description

Device for filtering and recovering hydration catalyst in cyclohexanol separation system

Technical Field

The utility model relates to the technical field of chemical production, in particular to a device for filtering and recovering a hydration catalyst in a cyclohexanol separation system.

Background

Cyclohexanol is an organic compound of formula C6H 12O. The appearance is colorless transparent oily liquid or white needle-shaped crystals. Has a camphor-like odor. It has hygroscopic property. In the process of preparing cyclohexanol by using a hydration method, a hydration catalyst is a molecular sieve with the particle size of 2 mu m, and the catalyst is small in particle size and is easily brought out by a reaction mixed material at the outlet of a hydration reactor, so that the phenomenon of tower blockage occurs in the subsequent rectification and separation process of cyclohexanol.

In the prior art, a small amount of hydrated catalyst solid particles are carried in a separated material from a hydration reactor, the particles are collected in a tower kettle of a cyclohexanol separation tower and extracted from the tower kettle along with concentrated cyclohexanol and enter a next cyclohexanol purification tower, the temperature of the tower kettle of the purification tower is high, the carried catalyst particles are separated out and then adhered to the wall of the tower, the tower is blocked after the catalyst particles are accumulated for a period of time, and finally, the normal production of the device is severely restricted, and the loss of the catalyst can be caused. Therefore, the catalyst is filtered and recovered, the problem of tower blockage of the rectifying tower is solved, part of the catalyst can be recovered, and the method has very important significance for improving the economic benefit of enterprises.

The hydration catalyst filtering and recycling device in the existing cyclohexanol separation system is poor in recycling effect generally, and the recycling rate of the hydration catalyst cannot be effectively improved.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, and provide a hydration catalyst filtering and recycling device in a cyclohexanol separation system, which can perform double filtering and recycling on the hydration catalyst, improve the recycling rate of the hydration catalyst, improve the filtering effect of a first ceramic filtering membrane by generating centrifugal force in the filtering process, has high working efficiency, and can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the device for filtering and recovering the hydration catalyst in the cyclohexanol separation system comprises a rough filtering recovery container, a T101 cyclohexanol separation tower and a fine filtering recovery container;

a rough filtration recovery container: the number of the coarse filtration recovery pipes is two, the coarse filtration recovery pipes arranged on the bottom surface of the coarse filtration recovery container are connected with a water inlet pipe of the first circulating pump, and a water outlet pipe of the first circulating pump is connected with a material inlet pipe of the recovery tank;

t101 cyclohexanol separation column: the feeding pipe arranged on the outer arc surface of the T101 cyclohexanol separation tower is simultaneously connected with rough filtering waste discharging pipes at the bottom ends of the outer arc surfaces of the two rough filtering recovery containers, and the discharging pipe on the bottom surface of the T101 cyclohexanol separation tower is connected with the water inlet pipe of the second circulating pump;

a fine filtration recovery container: the number of the fine filtration recovery containers is two, fine filtration recovery pipes arranged at the upper right end of the fine filtration recovery container are connected with the feed pipes of the recovery tank, and fine filtration feed pipes arranged at the upper left end of the fine filtration recovery container are connected with the water outlet pipe of the second circulating pump;

wherein: the output of external control switch group is all connected to the input of first circulating pump and second circulating pump electricity, can carry out dual filtration to the hydration catalyst and retrieve, promotes the recycle ratio of hydration catalyst, can also produce in the filtering process and promote the filter effect of first pottery filtration membrane at centrifugal force, and work efficiency is high.

Further, the fine filter inlet tube that fine filter recovery container left side lower extreme set up all links to each other with the outlet pipe of third circulating pump, and the inlet tube of third circulating pump links to each other with the outlet pipe of clear water jar, and the output of external control switch group is connected to the input electricity of third circulating pump, can supply water for fine filter recovery container.

Further, the feed inlet department of the outer cambered surface upper end of container is retrieved to the colating all is equipped with the colating inlet pipe, all rotate through the bearing in the through-hole of container upper surface center department is retrieved to the colating and be connected with the colating inlet tube, the lower extreme of colating inlet tube all is equipped with the shower head, the inside of colating recovery container rotates and is connected with the filter frame, the inside bottom surface edge of filter frame all is equipped with evenly distributed's through-hole, the inside of filter frame all is equipped with first ceramic filtration membrane, the row's of filter frame bottom surface center department expects the pipe and rotates and connect in the inside of colating waste discharge pipe, can carry out preliminary recovery to hydration catalyst.

Further, the fixed cover in outer cambered surface middle part of colating inlet tube all is equipped with the ring gear, and the upper surface of colating recovery vessel all is equipped with the motor frame, and the upper surface of motor frame all is equipped with the motor, and the output shaft of motor passes through the bearing and rotates the roof downside of being connected and extending to the motor frame with the motor frame, and the output shaft lower extreme of motor is equipped with the gear, and the gear is connected with the ring gear meshing, and the output of external control switch group is connected to the input electricity of motor, can produce centrifugal force and promote first ceramic filtration membrane's filter effect.

Furthermore, the edge of the upper surface of the filter frame is symmetrically provided with four linkage plates, and the opposite inner side ends of the four linkage plates are fixedly connected with the outer arc surface of the rough filter water inlet pipe, so that the filter frame can be driven to rotate together.

Further, the waste discharge port department of the lower extreme all is equipped with the waste discharge pipe of carefully straining on the right side of recovery vessel, and the inside of carefully straining recovery vessel all is equipped with evenly distributed's second ceramic filtration membrane, can carry out secondary filter to mixed solution, promotes hydration catalyst's recycle ratio.

Further, sealed lid is all installed to the opening part at both ends about the fine filtration recovery container, can ensure the leakproofness of fine filtration recovery container, and adopts modular structure to be convenient for maintain the change to second ceramic filtration membrane.

Compared with the prior art, the utility model has the beneficial effects that: this hydration catalyst filters recovery unit among cyclohexanol piece-rate system has following benefit:

1. the method comprises the steps that a cyclohexanol aqueous solution with a hydration catalyst and cyclohexene are conveyed into the rough filtration recovery container from a rough filtration inlet pipe and are filtered through a first ceramic filtration membrane, external clean water enters the rough filtration recovery container through a rough filtration water inlet pipe and a spray header, part of the hydration catalyst can permeate the outside of the first ceramic filtration membrane and enters the bottom of the rough filtration recovery container through a through hole in the process, then part of the hydration catalyst is conveyed to the inside of a recovery tank through the work of a first circulating pump to complete primary recovery, and the residual hydration catalyst on the inner surface of the first ceramic filtration membrane can be doped in waste liquid and enters a T cyclohexanol separation tower through a rough filtration waste discharge pipe and a rough filtration waste discharge pipe to wait for secondary filtration work.

2. When the rough filtration recovery container carries out filtering work, the motor operates to drive the gear to rotate through the regulation and control of the external control switch group, and the gear is meshed with the toothed ring to be connected, so that the rough filtration water inlet pipe drives the filter frame to rotate together through the linkage plate, and the filtering effect of the first ceramic filtering membrane is improved under the action of centrifugal force.

3. When T cyclohexanol knockout tower reacted, the cyclohexanol that has hydration catalyst dissolves from the inside that the export entered into the fine filtration recovery container through second circulating pump and fine filtration inlet pipe from the tower bottom, second ceramic filtration membrane carries out the secondary filter to mixed solution, hydration catalyst can be adsorbed at second ceramic filtration membrane's surface, and the waste liquid then discharges through the fine filtration exhaust waste pipe, the inside clear water of clear water jar is carried to the inside of fine filtration recovery container through the fine filtration inlet pipe by the third circulating pump and is washed the hydration catalyst of second ceramic filtration membrane surface down, hydration catalyst passes through the inside that the fine filtration recovery pipe got into the recovery tank along with the rise of liquid level, can retrieve hydration catalyst through subsequent drying work.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of a coarse filtration recovery vessel according to the present invention;

FIG. 3 is a schematic view of the inner cross-sectional structure of the rough filtration recovery vessel of the present invention;

FIG. 4 is a schematic view of the inner cross-section of the fine filtration recovery vessel of the present invention.

In the figure: 1 rough filtration recovery vessel, 2T101 cyclohexanol knockout tower, 3 fine filtration recovery vessels, 4 recovery tanks, 5 clean water jar, 6 first circulating pump, 7 second circulating pump, 8 third circulating pump, 9 rough filtration inlet pipe, 10 rough filtration waste discharge pipe, 11 rough filtration inlet tube, 12 shower heads, 13 rough filtration recovery tube, 14 filtration frame, 15 through-holes, 16 first ceramic filtration membrane, 17 ring gear, 18 motor frame, 19 motor, 20 gear, 21 linkage board, 22 sealed lid, 23 fine filtration inlet tube, 24 fine filtration inlet pipe, 25 fine filtration recovery tube, 26 fine filtration waste discharge pipe, 27 second ceramic filtration membrane.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present embodiment provides a technical solution: the device for filtering and recovering the hydration catalyst in the cyclohexanol separation system comprises a rough filtering recovery container 1, a T101 cyclohexanol separation tower 2 and a fine filtering recovery container 3;

rough filtration recovery vessel 1: the number of the recovery device is two, rough filtration recovery pipes 13 arranged on the bottom surface of a rough filtration recovery container 1 are connected with a water inlet pipe of a first circulation pump 6, a water outlet pipe of the first circulation pump 6 is connected with a feed pipe of a recovery tank 4, rough filtration feed pipes 9 are arranged at feed inlets at the upper end of the outer arc surface of the rough filtration recovery container 1, rough filtration water inlet pipes 11 are rotatably connected in through holes at the center of the upper surface of the rough filtration recovery container 1 through bearings, spray heads 12 are arranged at the lower ends of the rough filtration water inlet pipes 11, a filtration frame 14 is rotatably connected in the rough filtration recovery container 1, through holes 15 are uniformly distributed at the edge of the inner bottom surface of the filtration frame 14, a first ceramic filtration membrane 16 is arranged in the filtration frame 14, a discharge pipe at the center of the bottom surface of the filtration frame 14 is rotatably connected in a rough filtration waste discharge pipe 10, and a cyclohexanol water solution with a hydration catalyst and cyclohexene are sent into the rough filtration recovery container 1 from the rough filtration feed pipes 9, the waste water is filtered by a first ceramic filtering membrane 16, external clean water enters the interior of the rough filtering recovery container 1 through a rough filtering water inlet pipe 11 and a spray header 12, part of hydration catalyst can permeate the exterior of the first ceramic filtering membrane 16 in the process and enter the bottom of the rough filtering recovery container 1 through a through hole 15, then the first circulating pump 6 works to convey part of hydration catalyst to the interior of the recovery tank 4 to complete primary recovery, and the hydration catalyst remained on the inner surface of the first ceramic filtering membrane 16 can be doped in waste liquid and enters the T101 cyclohexanol separation tower 2 through a rough filtering waste discharge pipe 10 by a discharge pipe at the center of the bottom surface of a filtering frame 14;

t101 cyclohexanol separation column 2: the feeding pipe arranged on the outer cambered surface of the fine filtering recovery container is simultaneously connected with the coarse filtering waste discharging pipe 10 at the bottom end of the outer cambered surface of the two coarse filtering recovery containers 1, the discharging pipe on the bottom surface of the T101 cyclohexanol separation tower 2 is connected with the water inlet pipe of the second circulating pump 7, and when the T101 cyclohexanol separation tower 2 is in reaction, cyclohexanol water with hydrated catalyst is dissolved and enters the fine filtering recovery container 3 from the outlet at the bottom of the tower through the second circulating pump 7 and the fine filtering feeding pipe 24;

fine filtration recovery vessel 3: the number of the fine filter recovery device is two, a fine filter recovery pipe 25 arranged at the upper right end of a fine filter recovery container 3 is connected with a feed pipe of a recovery tank 4, a fine filter feed pipe 24 arranged at the upper left end of the fine filter recovery container 3 is connected with a water outlet pipe of a second circulating pump 7, a fine filter waste pipe 26 is arranged at a waste discharge port at the lower right end of the fine filter recovery container 3, second ceramic filter membranes 27 which are uniformly distributed are arranged in the fine filter recovery container 3, sealing covers 22 are arranged at openings at the left end and the right end of the fine filter recovery container 3, the second ceramic filter membranes 27 perform secondary filtration on the mixed solution, the hydration catalyst is adsorbed on the outer surfaces of the second ceramic filter membranes 27, the waste liquid is discharged through the fine filter waste pipe 26, after the hydration catalyst on the outer surfaces of the second ceramic filter membranes 27 is washed by clear water, the hydration catalyst enters the recovery tank 4 through the fine filter recovery pipe 25 along with the rising of the liquid level, the hydration catalyst can be recovered through subsequent drying work, the sealing cover 22 can ensure the sealing performance of the fine filtration recovery container 3, and the combined structure is adopted to facilitate the maintenance and replacement of the second ceramic filter membrane 27;

wherein: the input ends of the first circulating pump 6 and the second circulating pump 7 are electrically connected with the output end of the external control switch group.

Wherein: the fine filtration inlet tube 23 that fine filtration recovery container 3 left side lower extreme set up all links to each other with third circulating pump 8's outlet pipe, and third circulating pump 8's inlet tube links to each other with clear water tank 5's outlet pipe, and the output of external control switch group is connected to third circulating pump 8's input electricity, and the inside clear water of clear water tank 5 is carried to the hydration catalyst of fine filtration membrane 27 surface down through fine filtration inlet tube 23 by third circulating pump 8.

Wherein: the fixed cover in outer cambered surface middle part of colating inlet tube 11 all is equipped with ring gear 17, the upper surface of colating recovery container 1 all is equipped with motor frame 18, the upper surface of motor frame 18 all is equipped with motor 19, the output shaft of motor 19 passes through the bearing and is connected with motor frame 18 rotation and extend to the roof downside of motor frame 18, the output shaft lower extreme of motor 19 is equipped with gear 20, gear 20 is connected with ring gear 17 meshing, the output of external control switch group is connected to motor 19's input electricity, when colating recovery container 1 carries out filtering work, through the regulation and control of external control switch group, motor 19 operates, it is rotatory to drive gear 20, because gear 20 is connected with ring gear 17 meshing, can make colating inlet tube 11 drive filtration frame 14 together rotatory through linkage plate 21, promote the filter effect of first ceramic filtration membrane 16 under the effect of centrifugal force.

Wherein: four linkage plates 21 are symmetrically arranged at the edge of the upper surface of the filter frame 14, and the opposite inner side ends of the four linkage plates 21 are fixedly connected with the outer arc surface of the rough filter water inlet pipe 11 and can drive the filter frame 14 to rotate together.

The working principle of the hydration catalyst filtering and recovering device in the cyclohexanol separation system provided by the utility model is as follows: feeding cyclohexanol aqueous solution with hydration catalyst and cyclohexene into the rough filtration recovery container 1 from a rough filtration feeding pipe 9, filtering through a first ceramic filtering membrane 16, feeding external clean water into the rough filtration recovery container 1 through a rough filtration water inlet pipe 11 and a shower head 12, wherein part of hydration catalyst can permeate into the outside of the first ceramic filtering membrane 16 and enter the bottom of the rough filtration recovery container 1 through a through hole 15, then conveying part of hydration catalyst to the inside of a recovery tank 4by the work of a first circulating pump 6 to complete primary recovery, and the hydration catalyst remained on the inner surface of the first ceramic filtering membrane 16 can be doped in waste liquid and enter a T101 cyclohexanol separation tower 2 through a rough filtration waste discharge pipe 10 by a discharge pipe at the center of the bottom surface of a filter frame 14, and in addition, while the rough filtration recovery container 1 performs filtration work, through the regulation and control of an external control switch group, the motor 19 runs to drive the gear 20 to rotate, because the gear 20 is meshed with the toothed ring 17, the rough filtering water inlet pipe 11 can drive the filter frame 14 to rotate together through the linkage plate 21, the filtering effect of the first ceramic filtering membrane 16 is improved under the action of centrifugal force, when the T101 cyclohexanol separation tower 2 reacts, cyclohexanol water with hydrated catalyst is dissolved and enters the interior of the fine filtering recovery container 3 from the outlet at the bottom of the tower through the second circulating pump 7 and the fine filtering feed pipe 24, the second ceramic filtering membrane 27 carries out secondary filtering on the mixed solution, the hydrated catalyst is adsorbed on the outer surface of the second ceramic filtering membrane 27, the waste liquid is discharged through the fine filtering waste discharge pipe 26, clean water in the clean water tank 5 is conveyed to the interior of the fine filtering recovery container 3 through the fine filtering water inlet pipe 23 by the third circulating pump 8 to wash the hydrated catalyst on the outer surface of the second ceramic filtering membrane 27, the hydration catalyst enters the interior of the recovery tank 4 through the fine filtration recovery pipe 25 along with the rise of the liquid level, and the hydration catalyst can be recovered through the subsequent drying work.

It should be noted that the motor 19 disclosed in the above embodiments is a 24BYJ48 motor, the first circulation pump 6, the second circulation pump 7, and the third circulation pump 8 are all G-type single-screw pumps, and the external control switch group is provided with switch buttons for controlling the on-off operations of the motor 19, the first circulation pump 6, the second circulation pump 7, and the third circulation pump 8 in a one-to-one correspondence.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. Hydration catalyst filters recovery unit in cyclohexanol piece-rate system, its characterized in that: comprises a rough filtration recovery container (1), a T101 cyclohexanol separation tower (2) and a fine filtration recovery container (3);

rough filtration recovery container (1): the number of the coarse filtration recovery pipes is two, the coarse filtration recovery pipes (13) arranged on the bottom surface of the coarse filtration recovery container (1) are connected with a water inlet pipe of the first circulating pump (6), and a water outlet pipe of the first circulating pump (6) is connected with a material inlet pipe of the recovery tank (4);

t101 cyclohexanol separation column (2): a feeding pipe arranged on the outer arc surface of the T101 cyclohexanol separation tower is simultaneously connected with rough filtering waste discharging pipes (10) at the bottom ends of the outer arc surfaces of the two rough filtering recovery containers (1), and a discharging pipe on the bottom surface of the T101 cyclohexanol separation tower (2) is connected with a water inlet pipe of a second circulating pump (7);

fine filtration recovery vessel (3): the number of the fine filtration recovery device is two, the fine filtration recovery pipes (25) arranged at the upper right end of the fine filtration recovery container (3) are connected with the feed pipes of the recovery tank (4), and the fine filtration feed pipes (24) arranged at the upper left end of the fine filtration recovery container (3) are connected with the water outlet pipe of the second circulating pump (7);

wherein: the input ends of the first circulating pump (6) and the second circulating pump (7) are electrically connected with the output end of the external control switch group.

2. The cyclohexanol separation system hydration catalyst filtering recovery device of claim 1, wherein: the fine filter water inlet pipe (23) arranged at the lower left end of the fine filter recovery container (3) is connected with a water outlet pipe of the third circulating pump (8), a water inlet pipe of the third circulating pump (8) is connected with a water outlet pipe of the clean water tank (5), and the input end of the third circulating pump (8) is electrically connected with the output end of the external control switch group.

3. The cyclohexanol separation system hydration catalyst filtering recovery device of claim 1, wherein: feed inlet department of coarse filtration recovery container (1) extrados upper end all is equipped with coarse filtration inlet pipe (9), all rotate through the bearing in the through-hole of coarse filtration recovery container (1) upper surface center department and be connected with coarse filtration inlet tube (11), the lower extreme of coarse filtration inlet tube (11) all is equipped with shower head (12), the inside of coarse filtration recovery container (1) is rotated and is connected with filter frame (14), the inside bottom surface edge of filter frame (14) all is equipped with evenly distributed's through-hole (15), the inside of filter frame (14) all is equipped with first ceramic filtration membrane (16), the row's of filter frame (14) bottom surface center department expects the pipe and rotates and connects in the inside of coarse filtration waste discharge pipe (10).

4. The cyclohexanol separation system hydration catalyst filtering recovery device of claim 3, wherein: the fixed cover in outer cambered surface middle part of colating inlet tube (11) all is equipped with ring gear (17), the upper surface of colating recovery vessel (1) all is equipped with motor frame (18), the upper surface of motor frame (18) all is equipped with motor (19), the output shaft of motor (19) passes through the bearing and rotates with motor frame (18) to be connected and extend to the roof downside of motor frame (18), the output shaft lower extreme of motor (19) is equipped with gear (20), gear (20) are connected with ring gear (17) meshing, the output of external control switch group is connected to the input electricity of motor (19).

5. The cyclohexanol separation system hydration catalyst filtering recovery device of claim 3, wherein: four linkage plates (21) are symmetrically arranged at the edge of the upper surface of the filter frame (14), and the opposite inner side ends of the four linkage plates (21) are fixedly connected with the outer arc surface of the rough-filtering water inlet pipe (11).

6. The cyclohexanol separation system hydration catalyst filtering recovery device of claim 1, wherein: the waste discharge port department of carefully straining recovery vessel (3) right lower extreme all is equipped with carefully and strains waste discharge pipe (26), and the inside of carefully straining recovery vessel (3) all is equipped with evenly distributed's second ceramic filtration membrane (27).

7. The cyclohexanol separation system hydration catalyst filtering recovery device of claim 1, wherein: sealing covers (22) are mounted at openings at the left end and the right end of the fine filtration recovery container (3).

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