CN213032234U

CN213032234U - Low dead volume nanofiltration equipment

Info

Publication number: CN213032234U
Application number: CN202021233442.8U
Authority: CN
Inventors: 胡宁
Original assignee: Suzhou Yingli Medical Technology Co ltd
Current assignee: Suzhou Yingli Medical Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-23
Anticipated expiration: 2030-06-30

Abstract

The utility model belongs to the technical field of filtration equipment, a low dead volume nanofiltration equipment is related to, set up many including former liquid pipe, concentrate pipe and series connection between former liquid pipe and concentrate pipe and receive the filter column, the every is received the filter column and is separated into inlayer and skin by receiving the filter membrane, and adjacent receiving is established ties through outer end to end between the filter column, and the inlayer that the filter column was received to the difference connects in parallel in same root fluid-discharge tube, and the first root is received and is equipped with a root on the connecting tube of filter column and the second root nanofiltration and directly link to the branch pipe of concentrate pipe, the branch pipe can be adjusted and open and close. The nanofiltration equipment can enable the solution to pass through the first nanofiltration column at the last of treatment, so that the dead volume of the treatment is greatly reduced, the residue of the concentrated solution is reduced, and the nanofiltration effect is improved.

Description

Low dead volume nanofiltration equipment

Technical Field

The utility model relates to a filtration equipment technical field, in particular to low dead volume nanofiltration equipment.

Background

Nanofiltration (NF) is a membrane separation technique used to separate small molecular weight substances, such as inorganic salts or small organic molecules like glucose, sucrose, etc., from a solvent. The using principle is that stock solution passes through a plurality of nanofiltration columns, wherein the solvent part can pass through the nanofiltration membrane to reach the inner layer, then the stock solution is discharged from a discharge pipe on the boundary of the inner layer, micromolecule organic matters cannot penetrate through the nanofiltration membrane and are left on the outer layer, the micromolecule organic matters continue to flow to the next nanofiltration column, and concentrated solution with high concentration of the micromolecule organic matters is discharged after the nanofiltration columns which are connected in series. In this process, the liquid must fill the nanofiltration system and a certain high pressure must be maintained at the inlet to push the solution for nanofiltration. If the treatment amount of the stock solution is relatively small, a large part of the solution still remains in the nanofiltration column and cannot be treated, and only can be discharged and collected for the next batch treatment. The more nanofiltration columns, the larger the dead volume of the treatment. There is a need for an improved structure to avoid the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low dead volume nanofiltration equipment can reduce the dead volume in the equipment when handling capacity.

The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a low dead volume nanofiltration equipment, includes that former liquid pipe, concentrate pipe and series connection set up many between former liquid pipe and concentrate pipe and receive the filter column, and the every is received the filter column and is separated into inlayer and skin by receiving the filter membrane, and adjacent receiving is established ties through outer end to end between the filter column, and the inlayer that the filter column was received to the difference is parallelly connected in same root fluid-discharge tube, and the first one is received and is equipped with one on the connecting tube of filter column and the second root nanofiltration column and directly link to the branch pipe of concentrate pipe, the branch pipe can be adjusted and opens and close.

Specifically, the connection position of the connecting pipe and the branch pipe is switched by controlling the passage through a three-way valve.

Specifically, the connection position of the branch pipe on the connecting pipe is higher than the connection position of the branch pipe on the concentrate pipe.

Specifically, the nanofiltration columns are horizontally arranged and are arranged side by side from the first nanofiltration column upwards.

Furthermore, the number of nanofiltration columns is odd, and the concentrate pipes are downcomer pipes arranged in parallel to the connecting pipes.

Adopt above-mentioned technical scheme, the utility model discloses technical scheme's beneficial effect is:

the nanofiltration equipment can enable the solution to pass through the first nanofiltration column at the last of treatment, so that the dead volume of the treatment is greatly reduced, the residue of the concentrated solution is reduced, and the nanofiltration effect is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of a low dead volume nanofiltration device according to an embodiment;

fig. 2 is a state diagram of a three-way valve when all nanofiltration columns work together;

FIG. 3 is a state diagram of the three-way valve when only the first nanofiltration column is in operation.

The figures in the drawings represent:

1a, 1b and 1 c-nanofiltration columns, 11-nanofiltration membranes, 12-inner layers and 13-outer layers;

2-a stock solution pipe;

3-a concentrate pipe;

4-a liquid discharge pipe;

5-connecting pipe, 51-branch pipe;

6-three-way valve.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

Example (b):

as shown in figure 1, the utility model discloses a low dead volume nanofiltration equipment, including former liquid pipe 2, concentrate pipe 3 and series connection set up many between former liquid pipe 2 and concentrate pipe 3 and receive the

filter column

1a, 1b, 1c, the every is received the filter column and is separated into inlayer 12 and skin 13 by receiving filter membrane 11, adjacent receive and establish ties through outer 13 end to end between the filter column, the difference is received the inlayer of filter column and is parallelly connected in same root fluid-discharge tube 4, the first branch of receiving filter column 1a and the second is equipped with a branch pipe 51 of directly being linked to concentrate pipe 3 on receiving filter column 1 b's connecting pipe 5, branch pipe 51 can be adjusted and opens and close. The stock solution enters from the stock solution pipe 2, and is separated into concentrated solution and dilute solution after nanofiltration, wherein the concentrated solution is discharged from the concentrated solution pipe 3, and the dilute solution is discharged from the liquid discharge pipe 4. When the treatment capacity of the device for the stock solution is larger, the branch pipe 51 is closed, and the solution can pass through the nanofiltration column 1b and the nanofiltration column 1c in a first stage and finally comes out from the concentrated liquid pipe 3; at the end of the treatment, the branch pipe 51 is opened, and the solution passing through the first nanofiltration column 1a is directly discharged from the concentrated solution pipe 3 without passing through other nanofiltration columns 1a, so that the dead volume is reduced by about 2/3, the concentrated solution residue is reduced, and the nanofiltration effect is improved. In practical application, the nanofiltration column is not limited to three columns as long as more than two columns can theoretically reduce the dead volume.

As shown in fig. 1 to 3, the connection position of the connection pipe 5 and the branch pipe 51 is switched by the three-way valve 6. When all nanofiltration columns need to work together, the three-way valve 6 does not connect the branch pipe 51 but only leads the connecting pipe 5 to be smooth; when only one nanofiltration column is needed to work, the three-way valve 6 only needs to connect the inlet of the connecting pipe 5 directly with the branch pipe 51. The three-way valve 6 can switch the solution to pass through only one nanofiltration column or a plurality of nanofiltration columns only by one part without the control of a plurality of valves, and the adjustment is simpler.

As shown in fig. 1, the connection position of the branch pipe 51 on the connection pipe 5 is higher than the connection position of the branch pipe 51 on the concentrate pipe 3. Therefore, the backflow of the concentrated solution can be avoided, and the problem of new solution residue in the equipment is prevented.

As shown in fig. 1, the

nanofiltration columns

1a, 1b and 1c are horizontally arranged and are arranged side by side from the first nanofiltration column 1 a. The horizontal arrangement can lead the structure of the equipment to be more compact, the solution turns and flows upwards in the equipment, and the nanofiltration column above the equipment can be further nanofiltered only by filling the nanofiltration column below the equipment.

As shown in fig. 1, the number of nanofiltration columns is odd, and the concentrate pipe 3 is a downcomer pipe arranged in parallel to the connection pipe 5. When the number of the nanofiltration columns is odd, the concentrate pipe 3 can be arranged close to the connecting pipe 5, and the branch pipe 51 is shorter, so that the dead volume is prevented from being increased.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a low dead volume nanofiltration equipment, includes that stock solution pipe, concentrate pipe and series connection set up many between stock solution pipe and concentrate pipe and receive the filter column, and every is received the filter column and is separated into inlayer and skin by receiving the filter membrane, and adjacent receiving is established ties through outer end to end between the filter column, and the inlayer that the filter column was received to the difference is parallelly connected in same root fluid-discharge tube, its characterized in that: and a branch pipe which is directly connected to the concentrated liquid pipe is arranged on the connecting pipe of the first nanofiltration column and the second nanofiltration column, and the branch pipe can be adjusted to be opened and closed.

2. A low dead volume nanofiltration device according to claim 1, wherein: the connecting position of the connecting pipe and the branch pipe controls the switching of the passage through a three-way valve.

3. A low dead volume nanofiltration device according to claim 1, wherein: the connection position of the branch pipe on the connecting pipe is higher than that of the branch pipe on the concentrated liquid pipe.

4. A low dead volume nanofiltration device according to claim 1, wherein: the nanofiltration columns are all horizontally arranged and are arranged from the first nanofiltration column upwards side by side.

5. The low dead volume nanofiltration device of claim 4, wherein: the number of the nanofiltration columns is odd, and the concentrated liquid pipe is a downcomer parallel to the connecting pipe.