CN219186941U

CN219186941U - Molecular sieve activating device

Info

Publication number: CN219186941U
Application number: CN202223276787.3U
Authority: CN
Inventors: 王小万; 伍鸿斌; 严锦鸿
Original assignee: Fujian Bohong New Energy Technology Co ltd
Current assignee: Fujian Bohong New Energy Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-06-16
Anticipated expiration: 2032-12-07

Abstract

The utility model provides a molecular sieve activation device, relates to the technical field of molecular sieves, and solves the problems of short service life, troublesome replacement and influence on production efficiency of the existing molecular sieve device. The utility model relates to a heating and activating device which is arranged on a molecular sieve device and used for heating and activating the molecular sieve device so as to enable the molecular sieve device to be reused, and a temperature sensor which is used for monitoring the heating temperature of the molecular sieve device. The beneficial effects of the utility model are as follows: the molecular sieve device is activated, so that the molecular sieve can be reused, the replacement frequency is reduced, the cost is reduced, and the operation intensity of staff is reduced.

Description

Molecular sieve activating device

Technical Field

The utility model relates to the technical field of molecular sieves, in particular to a molecular sieve activating device.

Background

In fine chemical production, the water content of the solvent is very high, most of the reactions are controlled below hundreds of ppm, the water content of the solvent in the normal recovery process cannot meet the requirements of the reactions, the solvent needs to be dehydrated, and the molecular sieve is needed in the process; however, the molecular sieve will adsorb a lot of moisture after using for a period of time and lead to the inefficacy, and molecular sieve life is short, and this time is usually all to change molecular sieve, and it is often more loaded down with trivial details to change simultaneously, and staff's operation intensity is big, influences production efficiency.

Disclosure of Invention

The utility model aims to solve the problems of short service life, troublesome replacement and influence on production efficiency of the existing molecular sieve device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the molecular sieve activation device comprises a solvent dehydration tank, a feed pump and a molecular sieve device, wherein the solvent dehydration tank, the feed pump and the molecular sieve device are connected into a fluid circulation loop through pipelines, and the molecular sieve device comprises a tank body and a molecular sieve body arranged in the tank body, and is characterized in that: the device comprises a molecular sieve device, a heating and activating device and a temperature sensor, wherein the heating and activating device is arranged on the molecular sieve device and used for heating and activating the molecular sieve device so that the molecular sieve device can be repeatedly used, the temperature sensor is used for monitoring the heating temperature of the molecular sieve device, two sides of the upper end of the molecular sieve device are respectively connected with a vacuumizing pipe and a first vacuumizing pipe used for vacuumizing the solvent inside the molecular sieve device before heating and activating, and the bottom of the molecular sieve device is connected with a nitrogen inlet pipe used for filling nitrogen into the molecular sieve device during heating and activating.

The further improvement is that: the heating device is an oil guiding heating pipe, the oil guiding heating pipe is wound on the outer side wall of the molecular sieve device, an inlet and an outlet of the oil guiding heating pipe are respectively connected with an oil inlet regulating valve and an oil outlet regulating valve, and a protective shell is further arranged outside the oil guiding heating pipe.

The further improvement is that: the temperature sensor is an online temperature probe, and the detection end of the online temperature probe is inserted into the oil guiding heating pipe.

The further improvement is that: the heating activation device is a far infrared heating pipe, the far infrared heating pipe is wound on the outer side wall of the molecular sieve device, and a protective shell is arranged outside the far infrared heating pipe.

The further improvement is that: the temperature sensor is an infrared temperature detector.

The further improvement is that: and the nitrogen inlet pipe is connected with a nitrogen regulating valve.

The further improvement is that: the upper end of the solvent dehydration tank is also connected with a second emptying pipe.

The further improvement is that: the vacuumizing pipe is connected to a vacuum pump, and the vacuum pump is a Roots vacuum pump.

After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:

after the molecular sieve device is used for a period of time, the internal molecular sieve is invalid due to excessive water adsorption, the molecular sieve device is continuously heated and activated by being provided with a heating and activating device, nitrogen gas and vacuum are simultaneously filled in the molecular sieve device in a matched mode, water in the molecular sieve device is brought out, and the molecular sieve device is activated, so that the molecular sieve can be repeatedly used on the existing device, the replacement frequency is reduced, the cost is reduced, and the operation intensity of staff is reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.

Reference numerals illustrate: the device comprises a solvent dehydration tank 1, a feed pump 2, a molecular sieve device 3, a first evacuation pipe 4, an evacuation pipe 5, a heating and activating device 6, a temperature sensor 7, a nitrogen regulating valve 8, a second evacuation pipe 9, an oil inlet regulating valve 61 and an oil outlet regulating valve 62.

Detailed Description

Example 1

Referring to fig. 1, the technical scheme adopted in this embodiment is as follows: the molecular sieve activation device comprises a solvent dehydration tank 1, a feed pump 2 and a molecular sieve device 3, wherein the solvent dehydration tank 1, the feed pump 2 and the molecular sieve device 3 are connected into a fluid circulation loop through pipelines, the molecular sieve device 3 comprises a tank body and a molecular sieve body arranged in the tank body, the molecular sieve activation device further comprises a heating activation device arranged on the molecular sieve device 3 and used for heating and activating the molecular sieve device 3 so that the molecular sieve device 3 can be reused, a temperature sensor 7 used for monitoring the heating temperature of the molecular sieve device 3, two sides of the upper end of the molecular sieve device 3 are respectively connected with an evacuating pipe 5 and a first evacuating pipe 4 used for evacuating the molecular sieve device 3 before heating and activating, and the bottom of the molecular sieve device 3 is connected with a nitrogen inlet pipe used for filling nitrogen into the molecular sieve device 3 during heating and activating.

The heating and activating device 6 is an oil guiding heating pipe, the oil guiding heating pipe is wound on the outer side wall of the molecular sieve device 3, an inlet and an outlet of the oil guiding heating pipe are respectively connected with an oil inlet regulating valve 61 and an oil outlet regulating valve 62, and a protective shell is further arranged outside the oil guiding heating pipe.

The temperature sensor 7 is an online temperature probe, and the detection end of the online temperature probe is inserted into the oil guiding heating pipe.

Wherein the temperature control range of the oil guiding heating pipe is 350-380 ℃, the temperature control heating time is 3 hours, and the vacuum condition is-0.9 Mpa; the temperature of the introduced hot oil is monitored by an online temperature probe, and the continuous heating and activation of the molecular sieve device 3 at 350-380 ℃ are ensured by circularly introducing the hot oil, and the molecular sieve device is continuously operated under the vacuum condition of-0.9 Mpa for three hours.

Wherein, the vacuumizing tube 5 is connected to a vacuum pump, and the vacuum pump is a Roots vacuum pump.

Wherein, nitrogen gas admission line is connected with nitrogen gas governing valve 8.

Wherein the upper end of the solvent dehydration tank 1 is also connected with a second emptying pipe 9.

Example two

Referring to fig. 2, the present embodiment is different from the first embodiment in that: the heating and activating device 6 is a far infrared heating pipe which is wound on the outer side wall of the molecular sieve device 3 to perform temperature control heating and activation, and a protective shell is arranged outside the far infrared heating pipe.

Wherein, the temperature sensor 7 is an infrared temperature detector.

Wherein the temperature control range of the far infrared heating pipe is 500-600 ℃, the temperature control heating time is 3 hours, and the vacuum condition is-0.9 Mpa; the temperature of the far infrared heating pipe is monitored by an infrared temperature detector at any time, so that the heating and activating temperature of the far infrared heating pipe to the molecular sieve device 3 is ensured to be continuously at 500-600 ℃, and the molecular sieve device continuously works for 3 hours under vacuum of-0.9 Mpa.

The working principle of the utility model is as follows: after the molecular sieve device is used for a period of time, the internal molecular sieve is invalid due to excessive water adsorption, after the molecular sieve device is invalid, firstly, the solvent in the molecular sieve device is completely discharged through an emptying pipe, the heating and activating device is started to heat and activate the molecular sieve device, then nitrogen is filled into the molecular sieve device through the nitrogen regulating valve, meanwhile, the vacuum pump is started to vacuumize the molecular sieve device, the heating and activating converts water in the molecular sieve into water vapor, and the filled nitrogen can be discharged with the water vapor through vacuumizing; the activated molecular sieve can be used continuously, so that the replacement frequency is reduced, the cost is reduced, and the operation intensity of staff is reduced.

While the basic principles and main features of the present utility model and advantages thereof have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described merely by way of illustration of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents. The present utility model is not described in detail in the present application, and is well known to those skilled in the art.

Claims

1. The molecular sieve activation device comprises a solvent dehydration tank, a feed pump and a molecular sieve device, wherein the solvent dehydration tank, the feed pump and the molecular sieve device are connected into a liquid circulation loop through pipelines, and the molecular sieve device comprises a tank body and a molecular sieve body arranged in the tank body, and is characterized in that: the device comprises a molecular sieve device, a heating and activating device and a temperature sensor, wherein the heating and activating device is arranged on the molecular sieve device and used for heating and activating the molecular sieve device so that the molecular sieve device can be repeatedly used, the temperature sensor is used for monitoring the heating temperature of the molecular sieve device, two sides of the upper end of the molecular sieve device are respectively connected with a vacuumizing pipe and a first vacuumizing pipe used for vacuumizing the solvent inside the molecular sieve device before heating and activating, and the bottom of the molecular sieve device is connected with a nitrogen inlet pipe used for filling nitrogen into the molecular sieve device during heating and activating.

2. The molecular sieve activation device of claim 1, wherein: the heating and activating device is an oil guiding heating pipe, the oil guiding heating pipe is wound on the outer side wall of the molecular sieve device, an inlet and an outlet of the oil guiding heating pipe are respectively connected with an oil inlet regulating valve and an oil outlet regulating valve, and a protective shell is further arranged outside the oil guiding heating pipe.

3. The molecular sieve activation device of claim 2, wherein: the temperature sensor is an online temperature probe, and the detection end of the online temperature probe is inserted into the oil guiding heating pipe.

4. The molecular sieve activation device of claim 1, wherein: the heating activation device is a far infrared heating pipe, the far infrared heating pipe is wound on the outer side wall of the molecular sieve device, and a protective shell is arranged outside the far infrared heating pipe.

5. The molecular sieve activation device of claim 4, wherein: the temperature sensor is an infrared temperature detector.

6. The molecular sieve activation device of claim 1, wherein: and the nitrogen inlet pipe is connected with a nitrogen regulating valve.

7. The molecular sieve activation device of claim 1, wherein: the upper end of the solvent dehydration tank is also connected with a second emptying pipe.

8. The molecular sieve activation device of claim 1, wherein: the vacuumizing pipe is connected to a vacuum pump, and the vacuum pump is a Roots vacuum pump.