CN216425514U - Powder tank deoxidation system - Google Patents

Abstract

The utility model belongs to the technical field of chemical equipment, in particular to a powder tank deoxidation system, which comprises a powder tank, a feeding pipeline, an exhaust pipeline, a vacuum pump and a degassing nitrogen inlet line, wherein the feeding pipeline is used for feeding powder into the powder tank under the action of conveying gas; the gas exhaust line comprises a feeding gas exhaust line and a pressurized gas exhaust line, and the feeding gas exhaust line is used for exhausting the conveying gas filtered by the bag filter out of the powder tank; the vacuum pump is connected with the exhaust pipeline and is used for vacuumizing the powder tank; the degassing nitrogen inlet line is used for filling nitrogen for multiple times with different flow rates to the powder tank in the vacuum environment, and the nitrogen filled into the powder tank can be discharged through the pressure exhaust line. The utility model relates to a can realize filling nitrogen, exhaust, the overall process's of evacuation process system through carrying out the accurate design to the process technology, can satisfy entire system to the required technology of deoxidization, can fall oxygen content to within 100PPm in 100 minutes, has advantages such as deoxidization efficiency height, effectual.

Description

Powder tank deoxidation system

Technical Field

The utility model belongs to the technical field of the chemical industry equipment, concretely relates to powder tank deoxidation system.

Background

The requirement of oxygen removal of the bulk material environment may be involved in the chemical production process, and the oxygen content in the tank body is almost zero through the processes of nitrogen filling, air exhaust and vacuum pumping for a plurality of times for the tank body loaded with the powder, so that the powder with qualified oxygen removal is supplied for downstream use.

It is necessary to design a powder tank deoxidation system, and accurately design the processes of nitrogen filling, air exhausting and vacuum pumping (including flow control, time control and oxygen content control of each process), so as to meet the requirements of the whole system on deoxidation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a powder jar deoxidation system in order to solve the problem that powder jar deoxidation efficiency is low among the prior art, the effect is poor.

In order to achieve the above object, the utility model adopts the following technical scheme: a powder can deoxidation system comprising:

a powder tank;

the feeding pipeline is used for feeding powder into the powder tank under the action of conveying gas;

the gas discharge pipeline comprises a feeding gas discharge line and a pressurized gas discharge line, and the feeding gas discharge line is used for discharging the conveying gas filtered by the bag filter out of the powder tank;

the vacuum pump is connected with the exhaust pipeline and used for vacuumizing the powder tank;

and the degassing nitrogen inlet line is used for filling nitrogen for multiple times with different flow rates into the powder tank in the vacuum environment, and the nitrogen filled into the powder tank can be discharged through the pressure exhaust line.

Preferably, the exhaust pipeline and the degassing and nitrogen-feeding pipeline are respectively arranged at the upper end and the lower end of the powder tank, and the feeding pipeline is arranged between the exhaust pipeline and the degassing and nitrogen-feeding pipeline.

Preferably, the lower end of the powder tank is also provided with a discharge flow-assisting nitrogen pipeline, and the powder tank is internally provided with inflation filter cloth at a position corresponding to the degassing nitrogen inlet pipeline and the discharge flow-assisting nitrogen pipeline.

Preferably, a bag filter blowback pipeline is arranged above the bag filter of the powder tank.

Preferably, be equipped with the oxygen content monitor on the exhaust line, still be equipped with protection filter and vacuum degree gauge between vacuum pump and the powder jar.

Preferably, the powder tank is also provided with a differential pressure transmitter, a pressure sensor and a material level switch.

After the technical scheme is adopted, the utility model provides a pair of powder jar deoxidation system has following beneficial effect:

(1) the utility model relates to a can realize filling nitrogen, exhaust, evacuation overall process's process system carries out accurate design through the process technology to filling nitrogen, exhaust, evacuation, can satisfy entire system to deoxidization's technical requirement, can fall oxygen content to within 100PPm in 100 minutes, has advantages such as deoxidation efficiency height, effectual.

(2) The utility model discloses at the pressurization in-process, can be according to the different aeration flow of different pressure section control nitrogen gas in the powder jar to make the gas velocity that gets into the filter cloth even relatively, extension equipment life.

Drawings

FIG. 1 is a process flow diagram of the powder tank deoxidation system of the present invention.

Wherein: the device comprises a degassing nitrogen inlet line 1, an inflating filter cloth 2, a powder tank 3, a feeding pipeline 4, a bag filter 5, a vacuum pump 6, a protective filter 7, a vacuum gauge 8, a feeding exhaust line 9, a pressure exhaust line 10, an oxygen content monitor 11, a bag filter reverse blowing pipeline 12, a differential pressure transmitter 13, a pressure sensor 14, a material level switch 15 and a discharge flow-assisting nitrogen pipeline 16.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1, the utility model provides a pair of powder jar deoxidation system, including powder jar 3, be equipped with feed line 4, exhaust pipe line and degasification nitrogen inlet line 1 on powder jar 3, feed line 4 is used for sending the powder into powder jar 3 under conveying gas's effect to can stop to powder jar 3 feeding when powder jar 3 material loading level switch reports to the police, the exhaust pipe line includes feeding vent line 9 and area pressure vent line 10, feeding vent line 9 is used for carrying out conveying gas discharge powder jar 3 after 5 filters through the bag filter, connect vacuum pump 6 on the exhaust pipe line for carry out the evacuation to powder jar 3, degasification nitrogen inlet line 1 is used for carrying out the nitrogen-filling of a lot of different flows to powder jar 3 under the vacuum environment, and fills the nitrogen gas that fills powder jar 3 can discharge through area pressure vent line 10.

Further, exhaust pipe line and degasification are advanced nitrogen line 1 and are set up the upper and lower both ends at powder jar 3 respectively, feed line 4 sets up at exhaust pipe line and degasification and advance between the nitrogen line 1, 3 lower extremes of powder jar still are equipped with row's material and flow aid nitrogen pipeline 16, powder jar 3 inside corresponds degasification and advances nitrogen line 1 and arranges the position of material and flow aid nitrogen pipeline 16 and be equipped with and aerify filter cloth 2, the top that powder jar 3 is located bag filter 5 is equipped with bag filter blowback pipeline 12, be equipped with oxygen content monitor 11 on the exhaust pipe line, still be equipped with protection filter 7 and vacuum meter 8 between vacuum pump 6 and the powder jar 3, still be equipped with differential pressure transmitter 13, pressure sensor 14 and material level switch 15 on the powder jar 3.

The utility model relates to a powder jar deoxidation system during operation, including following step:

step 1, feeding: powder is fed into the powder tank 3 through the feeding pipeline 4 under the action of conveying gas, the conveying gas is filtered by the bag filter 5 and then is emptied through the feeding exhaust line 9, and when the material level switch 15 gives an alarm, the feeding pipeline 4 stops feeding;

step 2, first vacuumizing: after feeding is finished, starting the vacuum pump 6, pumping air into the powder tank 3 until the value of the vacuum meter 8 is 95Kpag, and closing the vacuum pump 6;

step 3, filling nitrogen for the first time: charging the powder tank 3 with nitrogen at an aeration flow rate of 150Nm3/h until the value of the pressure sensor 14 becomes 50 Kpag;

and 4, filling nitrogen for the second time: charging the powder tank 3 with nitrogen at an inflation flow rate of 540Nm3/h until the value of the pressure sensor 14 is 300 Kpag;

step 5, nitrogen discharging: opening the pressure exhaust line 10, and closing the pressure exhaust line 10 when the value of the pressure sensor 14 is exhausted from 300 Ktag to 30 Ktag;

and 6, second vacuumizing: starting the vacuum pump 6, and closing the vacuum pump 6 when the vacuum degree meter 8 is 95Kpag after the vacuum pump 6 is pumped from the pressure of 30 Kpag;

and 7, repeating the steps 3-5 to realize that the oxygen content is less than 100 PPm.

Example one

The volume and loading of the powder can are shown in the following table:

first vacuumizing: initial pressure 0barg, pump down to-95 Kpag, pump down capacity 150m3/h, 17.65 minutes;

filling nitrogen for the first time: charging nitrogen from-95 Kpag to 0.5barg at an aeration flow rate of 150Nm3/h for 8.144 minutes;

and (3) nitrogen charging for the second time: nitrogen was charged from 0.5barg to 3.0barg at an inflation flow rate of 540Nm3/h, 3.9335 minutes;

nitrogen discharge: outgas from 3barg to 30Kpag, 12.22 minutes;

and (3) second vacuumizing: initial pressure 30Kpag, pump to-95 Kpag, 19.30 minutes;

repeating the first nitrogen charging: charging nitrogen from-95 Kpag to 0.5barg at an aeration flow rate of 150Nm3/h for 8.144 minutes;

repeating the second nitrogen charging: nitrogen was charged from 0.5barg to 3.0barg at an inflation flow rate of 540Nm3/h, 3.9335 minutes;

and (3) repeatedly discharging nitrogen: outgas from 3barg to 30Kpag, 12.22 minutes.

The total time consumption is 85.545 minutes, and the final oxygen content is tested to be less than 100PPm, namely the technical requirement that the oxygen content is reduced to be within 100PPm within 100 minutes is realized.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. A powder tank deoxidation system is characterized by comprising:

a powder tank (3);

the feeding pipeline (4), the feeding pipeline (4) is used for feeding powder into the powder tank (3) under the action of conveying gas;

the powder tank comprises an exhaust pipeline and a gas outlet pipeline, wherein the exhaust pipeline comprises a feeding exhaust line (9) and a pressurized exhaust line (10), and the feeding exhaust line (9) is used for discharging the conveying gas filtered by the bag filter (5) out of the powder tank (3);

the vacuum pump (6), the said vacuum pump (6) is connected with exhaust line, is used for vacuumizing the powder pot (3);

the powder material tank is characterized by comprising a degassing nitrogen inlet line (1), wherein the degassing nitrogen inlet line (1) is used for filling nitrogen for multiple times with different flow rates into the powder material tank (3) in a vacuum environment, and the nitrogen filled into the powder material tank (3) can be discharged through a pressure exhaust line (10).

2. The powder can deoxidation system of claim 1, wherein: the exhaust pipe line and the degasification nitrogen inlet line (1) are respectively arranged at the upper end and the lower end of the powder tank (3), and the feeding pipe line (4) is arranged between the exhaust pipe line and the degasification nitrogen inlet line (1).

3. The powder can deoxidation system of claim 1, wherein: powder tank (3) lower extreme still is equipped with row and expects that flow aid nitrogen pipeline (16), powder tank (3) inside is equipped with to aerify filter cloth (2) corresponding degasification advances nitrogen line (1) and row position of arranging flow aid nitrogen pipeline (16).

4. The powder can deoxidation system of claim 1, wherein: and a bag filter reverse blowing pipeline (12) is arranged above the bag filter (5) of the powder tank (3).

5. The powder can deoxidation system of claim 1, wherein: be equipped with oxygen content monitor (11) on the exhaust line, still be equipped with between vacuum pump (6) and powder jar (3) protection filter (7) and vacuum degree meter (8).

6. The powder can deoxidation system of claim 1, wherein: and the powder tank (3) is also provided with a differential pressure transmitter (13), a pressure sensor (14) and a material level switch (15).

Images