CN213467050U

CN213467050U - Impurity removing device for N-methyl pyrrolidone production

Info

Publication number: CN213467050U
Application number: CN202021564393.6U
Authority: CN
Inventors: 方飞; 李军锋; 卢明辉; 蓝军; 郭香友; 廖燕萍
Original assignee: Jiangxi Shengyuan New Material Co ltd
Current assignee: Jiangxi Shengyuan New Material Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-06-18
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses an edulcoration device of N-methyl pyrrolidone production usefulness, the device comprises a device body, the inside of device body is provided with edulcoration chamber and heating chamber, the cooperation has the installing zone on the surface of device body, the surface threaded connection of device body has the upper cover, the surface of upper cover is provided with the feed inlet, the motor is installed to the inboard of installing zone, the axis of rotation of motor penetrates edulcoration intracavity side fixedly connected with installing frame. The device can reduce the moisture content in the N-methyl pyrrolidone through the heating, filters the impurity that smugglies in the N-methyl pyrrolidone through second molecular sieve, first molecular sieve to adsorb impurity wherein through first active carbon filter screen and second active carbon filter screen, effectively reduce heavy metal ion concentration and moisture in the N-methyl pyrrolidone.

Description

Impurity removing device for N-methyl pyrrolidone production

Technical Field

The utility model belongs to the technical field of the NMP purification treatment, specifically be an edulcoration device of N-methyl pyrrolidone production usefulness.

Background

N-methylpyrrolidone, a chinese alias: NMP, 1-methyl-2-pyrrolidone; n-methyl-2-pyrrolidone. Colorless transparent oily liquid, slightly having amine odor. The N-methyl pyrrolidone can be mutually soluble with water, alcohol, ether, ester, ketone, halogenated hydrocarbon, aromatic hydrocarbon and castor oil, has low volatility, good thermal stability and chemical stability, can volatilize along with water vapor, has hygroscopicity and is photosensitive, and the N-methyl pyrrolidone needs to be purified in the production and processing process.

However, the existing N-methyl pyrrolidone purification method is single, heavy metal ions in the N-methyl pyrrolidone are difficult to filter, microorganisms such as bacteria are bred in the N-methyl pyrrolidone, and the production quality of the N-methyl pyrrolidone is directly influenced if the purification treatment is not carried out on the N-methyl pyrrolidone. Accordingly, one skilled in the art provides an apparatus for purifying N-methylpyrrolidone, which solves the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an edulcoration device of N-methyl pyrrolidone production usefulness to solve the inside problem that contains impurity of N-methyl pyrrolidone.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an edulcoration device of N-methyl pyrrolidone production usefulness, includes the device body, the inside of device body is provided with edulcoration chamber and heating chamber, the cooperation has the installing zone on the surface of device body, the surperficial threaded connection of device body has the upper cover, the surface of upper cover is provided with the feed inlet, the motor is installed to the inboard of installing zone, the axis of rotation of motor penetrates edulcoration intracavity side fixedly connected with installing frame, and the motor drives the installing frame and rotates, and the N-methyl pyrrolidone that gets into in the installing frame utilizes first molecular sieve, second molecular sieve, first active carbon filter screen and the impurity of second active carbon filter screen in to N-methyl pyrrolidone to filter the absorption through the effect of centrifugal force.

Preferably, first molecular sieve, second molecular sieve, first active carbon filter screen and second active carbon filter screen are installed to the inboard of installing frame, and first molecular sieve is elementary molecular sieve, and the second molecular sieve is the second grade molecular sieve, filters the impurity that smugglies in N-methyl pyrrolidone through first molecular sieve and second molecular sieve to adsorb impurity wherein through first active carbon filter screen and second active carbon filter screen, carry out the edulcoration to N-methyl pyrrolidone with this, the upper end threaded connection of installing frame has the splashproof lid, and the setting of splashproof lid prevents that N-methyl pyrrolidone from eaves and overflowing on the installing frame when the motor drives the installing frame and rotate, opens the splashproof lid simultaneously and can take first molecular sieve, second molecular sieve, first active carbon filter screen and the second active carbon filter screen in the installing frame out.

Preferably, the unloading pipe is installed to the inboard of installing zone, and unloading pipe intercommunication edulcoration chamber and heating chamber open the interior material of stop valve edulcoration chamber and discharge the heating intracavity downwards through the unloading pipe, and the surface mounting of unloading pipe has the stop valve.

Preferably, a heating block is installed on the inner side of the heating cavity, and after the N-methyl pyrrolidone enters the heating cavity through the blanking pipe, the heating block is used for heating to remove water in the N-methyl pyrrolidone and kill microorganisms in the N-methyl pyrrolidone.

Preferably, a drain valve is mounted on the surface of the device body, the drain valve is mounted outside the heating chamber, and the N-methylpyrrolidone heated to remove water is discharged from the heating chamber through the drain valve.

Preferably, the symmetrical welding in surface of upper cover has the stress application pole, conveniently rotates the upper cover through the stress application pole, unloads the upper cover from the surface of device body to this is convenient clears up the change to the filtering material in the edulcoration intracavity installing frame.

Preferably, an exhaust pipe is installed at the upper end of the surface heating cavity of the installation area, and when the N-methyl pyrrolidone enters the heating cavity for heating, water vapor in the N-methyl pyrrolidone is upwards exhausted through the exhaust pipe, so that the moisture of the N-methyl pyrrolidone is reduced.

Compared with the prior art, the beneficial effects of the utility model are that: the device can reduce the moisture content in the N-methyl pyrrolidone through the heating, filters the impurity that smugglies in the N-methyl pyrrolidone through second molecular sieve, first molecular sieve to adsorb impurity wherein through first active carbon filter screen and second active carbon filter screen, effectively reduce heavy metal ion concentration and moisture in the N-methyl pyrrolidone.

Drawings

FIG. 1 is a sectional view of the overall structure of the present invention;

fig. 2 is a top view of the mounting frame of the present invention;

fig. 3 is a schematic view of the lower surface of the splash cover of the present invention.

In the figure: the device comprises a device body 1, an upper cover 11, a feed inlet 12, a force applying rod 13, a liquid discharge valve 14, a impurity removing cavity 2, a mounting frame 21, a splash-proof cover 22, a second active carbon filter screen 23, a first active carbon filter screen 24, a second molecular sieve 25, a first molecular sieve 26, a mounting area 3, a discharge pipe 31, a motor 32, a stop valve 33, a heating cavity 4, a heating block 41 and an exhaust pipe 42.

Detailed Description

Referring to fig. 1, an impurity removing device for N-methyl pyrrolidone production comprises a device body 1, an impurity removing cavity 2 and a heating cavity 4 are arranged inside the device body 1, a mounting area 3 is cooperatively arranged on the surface of the device body 1, an upper cover 11 is in threaded connection with the surface of the device body 1, a feeding hole 12 is formed in the surface of the upper cover 11, a motor 32 is installed on the inner side of the mounting area 3, a rotating shaft of the motor 32 penetrates through a mounting frame 21 fixedly connected to the inner side of the impurity removing cavity 2, the motor 32 drives the mounting frame 21 to rotate, and N-methyl pyrrolidone entering the mounting frame 21 is filtered and adsorbed by a first molecular sieve 26, a second molecular sieve 25, a first activated carbon filter screen 24 and a second activated carbon filter screen 23 under the action of centrifugal force.

Referring to fig. 1, 2 and 3, a first molecular sieve 26, a second molecular sieve 25, a first activated carbon filter 24 and a second activated carbon filter 23 are installed inside the installation frame 21, the first molecular sieve 26 is a primary molecular sieve, the second molecular sieve 25 is a secondary molecular sieve, impurities carried in the N-methyl pyrrolidone are filtered through a first molecular sieve 26 and a second molecular sieve 25, the impurities are adsorbed through a first activated carbon filter screen 24 and a second activated carbon filter screen 23, thus, the N-methyl pyrrolidone is purified, the upper end of the mounting frame 21 is connected with the splash cover 22 through the screw thread, when the motor 32 drives the mounting frame 21 to rotate, the splash cover 22 is arranged to prevent the N-methyl pyrrolidone from overflowing from the upper brim of the mounting frame 21, and simultaneously, the splash cover 22 is opened, so that the first molecular sieve 26, the second molecular sieve 25, the first activated carbon filter screen 24 and the second activated carbon filter screen 23 in the installation frame 21 can be drawn out.

Referring to fig. 1, a discharging pipe 31 is installed inside the installation area 3, the discharging pipe 31 communicates the impurity removing chamber 2 and the heating chamber 4, the stop valve 33 is opened, the material in the impurity removing chamber 2 is discharged downwards into the heating chamber 4 through the discharging pipe 31, and the stop valve 33 is installed on the surface of the discharging pipe 31.

Referring to fig. 1, a heating block 41 is installed inside the heating chamber 4, and after the N-methyl pyrrolidone enters the heating chamber 4 through the feeding pipe 31, the heating block 41 heats the N-methyl pyrrolidone to remove water and kill microorganisms in the N-methyl pyrrolidone.

Referring to fig. 1, drain valve 14 is installed on the surface of apparatus body 1, drain valve 14 is installed outside heating chamber 4, and N-methylpyrrolidone heated to remove moisture is discharged from heating chamber 4 through drain valve 14.

Referring to fig. 1, the force applying rods 13 are symmetrically welded on the surface of the upper cover 11, the upper cover 11 is conveniently rotated by the force applying rods 13, the upper cover 11 is detached from the surface of the device body 1, and the filtering material in the installation frame 21 in the impurity removing cavity 2 is conveniently cleaned and replaced.

Referring to fig. 1, an exhaust pipe 42 is installed at the upper end of the surface heating chamber 4 of the installation area 3, and when the N-methyl pyrrolidone enters the heating chamber 4 for heating, water vapor in the N-methyl pyrrolidone is exhausted upwards through the exhaust pipe 42, so as to reduce moisture in the N-methyl pyrrolidone.

The working principle of the scheme is as follows: when the device is used, the motor 32 drives the mounting frame 21 to rotate, the N-methyl pyrrolidone downwards enters the mounting frame 21 through the feeding hole 12, the N-methyl pyrrolidone entering the mounting frame 21 drives the mounting frame 21 to rotate through the motor 32 under the action of centrifugal force, impurities carried in the N-methyl pyrrolidone are filtered by the aid of the first molecular sieve 26 and the second molecular sieve 25, the impurities in the N-methyl pyrrolidone are adsorbed through the first activated carbon filter screen 24 and the second activated carbon filter screen 23, then the N-methyl pyrrolidone downwards enters the heating cavity 4 through the discharging pipe 31, the N-methyl pyrrolidone is heated through the heating block 41 to remove water in the N-methyl pyrrolidone and kill microorganisms in the N-methyl pyrrolidone, and accordingly concentration of heavy metal ions in the N-methyl pyrrolidone can be effectively reduced, Moisture and microorganisms.

Claims

1. The utility model provides an edulcoration device of N-methyl pyrrolidone production usefulness, includes device body (1), its characterized in that: the inside of device body (1) is provided with edulcoration chamber (2) and heating chamber (4), the cooperation has installing zone (3) on the surface of device body (1), the surperficial threaded connection of device body (1) has upper cover (11), the surface of upper cover (11) is provided with feed inlet (12), motor (32) are installed to the inboard of installing zone (3), the axis of rotation of motor (32) penetrates edulcoration chamber (2) inboard fixedly connected with installing frame (21).

2. An impurity removal device for N-methylpyrrolidone production according to claim 1, wherein: first molecular sieve (26), second molecular sieve (25), first active carbon filter screen (24) and second active carbon filter screen (23) are installed to the inboard of installing frame (21), the upper end threaded connection of installing frame (21) has splashproof lid (22).

3. An impurity removal device for N-methylpyrrolidone production according to claim 1, wherein: unloading pipe (31) are installed to the inboard of installing zone (3), and unloading pipe (31) intercommunication edulcoration chamber (2) and heating chamber (4), and the surface mounting of unloading pipe (31) has stop valve (33).

4. An impurity removal device for N-methylpyrrolidone production according to claim 1, wherein: and a heating block (41) is arranged on the inner side of the heating cavity (4).

5. An impurity removal device for N-methylpyrrolidone production according to claim 1, wherein: the surface of the device body (1) is provided with a liquid discharge valve (14), and the liquid discharge valve (14) is arranged outside the heating cavity (4).

6. An impurity removal device for N-methylpyrrolidone production according to claim 1, wherein: the surface of the upper cover (11) is symmetrically welded with a forcing rod (13).

7. An impurity removal device for N-methylpyrrolidone production according to claim 1, wherein: an exhaust pipe (42) is arranged at the upper end of the surface heating cavity (4) of the mounting area (3).