A hollow fiber solution regeneration device

Abstract

The utility model discloses a hollow fiber solution regeneration device, which relates to the technical field of solution regeneration, including a solution tank body, which is composed of a concentrated solution storage tank and a dilute solution storage tank, which are separated by a separation partition, the concentrated solution storage tank is filled with a concentrated solution, and the dilute solution storage tank is filled with a dilute solution, and also includes: a siphon, a dilute solution injection port, a concentrated solution suction port, a hollow fiber membrane component 2 and a negative pressure pump 2. The utility model adopts a negative pressure pump and a hollow fiber membrane component to separate and remove water in the solution, which is more efficient than using heat to regenerate the solution, and has low energy loss and a wide range of applications during the solution regeneration process.

Description

Technical Field

[0001] The utility model relates to the technical field of solution regeneration, in particular to a hollow fiber solution regeneration device. Background Art

[0002] In building air conditioning applications, solutions are often used as media. The strong absorption capacity of the solution is used to convert the chemical adsorption capacity stored in the concentrated solution into humidity control capacity in air conditioning applications, or to convert it into cold and heat using the absorption heat pump principle. The advantage is that the prepared concentrated solution can be used for energy storage. This energy storage method has a higher energy density and the ability to store energy for a long time.

[0003] Most of the solution concentration processes in the prior art use heat, which is to heat the solution so that the water therein evaporates and separates and is collected and discharged from above the liquid surface. However, the temperature of the heated solution is high and cannot be used directly. It needs to be cooled before use. Moreover, thermal energy is not easy to obtain in many occasions and needs to be obtained through combustion or electric heating, which has a low primary energy conversion efficiency.

[0004] Therefore, a hollow fiber solution regeneration device is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of the embodiments of the present utility model is to provide a hollow fiber solution regeneration device to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hollow fiber solution regeneration device comprises a solution tank body, wherein the solution tank body is composed of a concentrated solution storage tank and a dilute solution storage tank, wherein the concentrated solution storage tank and the dilute solution storage tank are separated by a separation partition, wherein the concentrated solution storage tank is filled with a concentrated solution, and the dilute solution storage tank is filled with a dilute solution, and further comprises:

[0008] A siphon tube connected to the solution tank, the siphon tube is in an inverted U shape, the siphon tube spans the top of the separation baffle, and the two ends of the siphon tube are respectively connected to the bottom of the concentrated solution storage tank and the dilute solution storage tank;

[0009] A dilute solution injection port is connected to the solution tank, and the bottom end is communicated with the inside of the dilute solution storage tank, a valve 1 is provided on the dilute solution injection port, and the dilute solution injection port is connected to an output end of a solution pump 1;

[0010] A concentrated solution suction outlet is connected to the solution tank, and the bottom end is communicated with the bottom of the concentrated solution storage tank. A valve 2 is provided on the concentrated solution suction outlet, and the concentrated solution suction outlet is connected to the second input end of the solution pump;

[0011] The second hollow fiber membrane module is arranged inside the concentrated solution storage tank, and the second hollow fiber membrane module only allows water to pass through, and is used to separate water from the solution;

[0012] The negative pressure pump 2 has an input end connected to the interior of the hollow fiber membrane assembly 2 through a pipeline 3, and an output end connected to the interior of a pipeline 4.

[0013] As a further solution of the utility model: it also includes:

[0014] A dilute solution side drain pipe, which runs through one side of the dilute solution storage tank and is in communication with the bottom of the tank, and a valve three is provided on the dilute solution side drain pipe;

[0015] The concentrated solution side drain pipe runs through one side of the concentrated solution storage tank and is connected to the bottom of the concentrated solution storage tank. A valve four is provided on the concentrated solution side drain pipe.

[0016] As a further solution of the utility model: it also includes:

[0017] A hollow fiber membrane module 1 is arranged inside the dilute solution storage tank, wherein the hollow fiber membrane module 1 allows water to pass through and is used to separate water from the solution;

[0018] The negative pressure pump 1 has an input end connected to the interior of the hollow fiber membrane module 1 through a pipeline 1, and an output end connected to the interior of a pipeline 2.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model adopts a negative pressure pump and a hollow fiber membrane component to separate and remove water in the solution. Compared with the solution regeneration using heat, the utility model has higher efficiency, low energy loss in the solution regeneration process and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a hollow fiber solution regeneration device in an embodiment of the utility model.

[0022] In the figure: 1. dilute solution storage tank; 2. concentrated solution storage tank; 3. separation baffle; 4. siphon; 5. hollow fiber membrane assembly 1; 6. hollow fiber membrane assembly 2; 7. negative pressure pump 1; 8. negative pressure pump 2; 9. dilute solution injection port; 10. concentrated solution suction port; 11. dilute solution side drain pipe; 12. concentrated solution side drain pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the present utility model embodiment, please refer to Figure 1 A hollow fiber solution regeneration device comprises a solution tank body, wherein the solution tank body is composed of a concentrated solution storage tank 2 and a dilute solution storage tank 1, wherein the concentrated solution storage tank 2 and the dilute solution storage tank 1 are separated by a separation partition 3, wherein the concentrated solution storage tank 2 is filled with a concentrated solution, and the dilute solution storage tank is filled with a dilute solution, and further comprises:

[0025] A siphon 4 is connected to the solution tank. The siphon 4 is in an inverted U shape. The siphon 4 spans the top of the separation baffle 3. Both ends of the siphon are connected to the bottom of the concentrated solution storage tank and the dilute solution storage tank respectively.

[0026] A dilute solution injection port 9 is connected to the solution tank, and the bottom end is communicated with the inside of the dilute solution storage tank 1. A valve 1 is provided on the dilute solution injection port 9, and the dilute solution injection port 9 is connected to an output end of a solution pump 1;

[0027] The concentrated solution suction port 10 is connected to the solution tank, and the bottom end is communicated with the bottom end of the concentrated solution storage tank. The concentrated solution suction port 10 is provided with a valve 2, and the concentrated solution suction port 10 is connected to the second input end of the solution pump;

[0028] The hollow fiber membrane assembly 2 6 is arranged inside the concentrated solution storage tank 2. The hollow fiber membrane assembly 2 6 only allows water to pass through, and is used to separate water from the solution;

[0029] The negative pressure pump 2 8 has an input end connected to the interior of the hollow fiber membrane assembly 2 6 through a pipeline 3, and an output end connected to the interior of a pipeline 4.

[0030] The negative pressure pump 2 8 works, so that negative pressure is continuously formed inside the hollow fiber membrane assembly 2 6. At this time, the water in the surrounding concentrated solution will continuously penetrate the membrane wall into the hollow cavity of the hollow fiber membrane, and will be further sucked out of the concentrated solution storage tank 2 by the negative pressure pump 2 8. As the water in the concentrated solution is continuously lost, the concentration of the concentrated solution further increases. When the regeneration concentration is reached, the solution pump 2 (not shown in the figure) works to suck out the concentrated solution that has reached the regeneration concentration through the concentrated solution suction port 10, and provide it to various system ends (not shown in the figure) that use the solution as the absorbent for application. After contacting with the evaporant (water) at the system end and absorbing water, the concentrated solution becomes a dilute solution again, and is transported back to the dilute solution storage tank 1 by the solution pump 1 (not shown in the figure) through the dilute solution injection port 9. As the concentrated solution continues to flow out, the dilute solution The continuous inflow causes the liquid level in the concentrated solution storage tank 2 to drop, while the liquid level in the dilute solution storage tank 1 to rise, resulting in a liquid level difference on both sides. At this time, the dilute solution is sucked in through the inlet of the siphon tube 4 located at the bottom of the dilute solution storage tank 1, and flows out at the bottom of the concentrated solution storage tank 2, ensuring that the liquid levels on both sides are balanced, but the concentrations are different. At the same time, it is ensured that there is a continuous flow of dilute solution into the concentrated solution storage tank 2 for solution regeneration. Since the concentration difference of the solution also means the density difference, the solution with high density will gather at the bottom. At the same time, since the overall flow direction of the solution is to enter from the dilute solution side, cross the separation partition 3 through the siphon tube 4 and enter the concentrated solution side, the outlet of the siphon tube 4 is located at the bottom of the concentrated solution storage tank 2, which will make the concentration of the solution entering the concentrated solution storage tank 2 higher than the concentration of the solution in the upper part of the dilute solution storage tank 1, further improving the ability of solution regeneration.

[0031] In this embodiment, the hollow fiber membrane assembly 2 6 is made of hollow fiber membrane fibers. As a membrane structure that can selectively distinguish substances of different sizes at the molecular level, the hollow fiber membrane fibers can be used to separate water from a solution.

[0032] In this embodiment, in order to prevent the solution inside the concentrated solution storage tank 2 from crystallizing, a concentration measuring device (not shown in the figure) can be installed inside the concentrated solution storage tank 2, and the negative pressure pump 8 can be turned off after the solution reaches the set concentration to prevent the solution from continuing to concentrate and crystallize; a water pipe (not shown in the figure) can also be set on the concentrated solution storage tank 2, so that when the solution concentration is too high or the temperature changes and causes the solution to crystallize, some water can be appropriately added to the solution to avoid crystallization; an ultrasonic oscillator (not shown in the figure) can also be installed under the solution tank body to make the solution concentration evenly distributed by oscillation to avoid crystallization.

[0033] As an embodiment of the present invention, please refer to Figure 1 , also includes:

[0034] A dilute solution side drain pipe 11 runs through one side of the dilute solution storage tank 1 and is in communication with the bottom of the tank. A valve 3 is provided on the dilute solution side drain pipe 11.

[0035] The concentrated solution side drain pipe 12 passes through one side of the concentrated solution storage tank 2 and is connected to the bottom of the concentrated solution storage tank 2. A valve 4 is provided on the concentrated solution side drain pipe 12.

[0036] The dilute solution storage tank 1 can be emptied of the dilute solution through the dilute solution side drain pipe 11 , and the concentrated solution storage tank 2 can be emptied of the concentrated solution through the concentrated solution side drain pipe 12 .

[0037] As an embodiment of the present invention, please refer to Figure 1 , also includes:

[0038] A hollow fiber membrane assembly 5 is disposed inside the dilute solution storage tank 1. The hollow fiber membrane assembly 5 only allows water to pass through, and is used to separate water from the solution.

[0039] The negative pressure pump 7 has an input end connected to the interior of the hollow fiber membrane assembly 5 through a pipeline 1, and an output end connected to the interior of a pipeline 2.

[0040] The negative pressure pump 7 works, so that negative pressure is continuously formed inside the hollow fiber membrane assembly 5. At this time, the water in the surrounding dilute solution will continuously pass through the membrane wall into the hollow cavity of the hollow fiber membrane, and is further sucked out of the dilute solution storage tank 1 by the negative pressure pump 7. As the water in the dilute solution is continuously lost, the concentration of the dilute solution increases accordingly.

[0041] As an enhancement device, this embodiment can be started during the pure energy storage (intermittent period) stage, so that the solutions on both sides of the solution tank are concentrated into regenerated concentrated solutions and can be stored for a long time; the hollow fiber membrane component 5 and the negative pressure pump 7 can also be started and operated during periods of high system load, thereby being able to withstand higher application-side demands.

[0042] In this embodiment, the hollow fiber membrane component 5 is made of hollow fiber membrane fibers. As a membrane structure that can selectively distinguish substances of different sizes at the molecular level, the hollow fiber membrane fibers can be used to separate water from a solution.

[0043] The working principle of the utility model is as follows: the negative pressure pump 28 works to continuously form negative pressure inside the hollow fiber membrane assembly 26. At this time, the water in the surrounding concentrated solution will continuously penetrate the membrane wall into the hollow cavity of the hollow fiber membrane, and further be sucked out of the concentrated solution storage tank 2 by the negative pressure pump 28. As the water in the concentrated solution continues to be lost, the concentration of the concentrated solution further increases. When the regeneration concentration is reached, the solution pump 2 works to suck out the concentrated solution that has reached the regeneration concentration through the concentrated solution suction port 10 and provide it to the end of various systems using the solution as the absorbent for application. At the end of the system, the concentrated solution is sucked out by the evaporator 10. After the concentrated solution contacts and absorbs moisture, the concentrated solution becomes a dilute solution again and is transported back to the dilute solution storage tank 1 by the solution pump 1 through the dilute solution injection port 9. As the concentrated solution continuously flows out and the dilute solution continuously flows in, the liquid level in the concentrated solution storage tank 2 drops and the liquid level in the dilute solution storage tank 1 rises, resulting in a liquid level difference on both sides. At this time, the dilute solution is sucked in through the inlet of the siphon 4 at the bottom of the dilute solution storage tank 1 and flows out at the bottom of the concentrated solution storage tank 2, ensuring that the liquid levels on both sides are balanced, but the concentrations are different. At the same time, it is ensured that there is a continuous dilute solution entering the concentrated solution storage tank 2 for solution regeneration.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hollow fiber solution regeneration device, comprising a solution tank body, wherein the solution tank body is composed of a concentrated solution storage tank and a dilute solution storage tank, wherein the concentrated solution storage tank and the dilute solution storage tank are separated by a separation partition, wherein the concentrated solution storage tank is filled with a concentrated solution, and the dilute solution storage tank is filled with a dilute solution, wherein: Also includes: A siphon tube connected to the solution tank, the siphon tube is in an inverted U shape, the siphon tube spans the top of the separation baffle, and the two ends of the siphon tube are respectively connected to the bottom of the concentrated solution storage tank and the dilute solution storage tank; A dilute solution injection port is connected to the solution tank, and the bottom end is communicated with the inside of the dilute solution storage tank, a valve 1 is provided on the dilute solution injection port, and the dilute solution injection port is connected to an output end of a solution pump 1; A concentrated solution suction outlet is connected to the solution tank, and the bottom end is communicated with the bottom of the concentrated solution storage tank. A valve 2 is provided on the concentrated solution suction outlet, and the concentrated solution suction outlet is connected to the second input end of the solution pump; The second hollow fiber membrane module is arranged inside the concentrated solution storage tank, and the second hollow fiber membrane module only allows water to pass through, and is used to separate water from the solution; The negative pressure pump 2 has an input end connected to the interior of the hollow fiber membrane assembly 2 through a pipeline 3, and an output end connected to the interior of a pipeline 4.

2. A hollow fiber solution regeneration device according to claim 1, characterized in that: Also includes: A dilute solution side drain pipe, which runs through one side of the dilute solution storage tank and is in communication with the bottom of the tank, and a valve three is provided on the dilute solution side drain pipe; The concentrated solution side drain pipe runs through one side of the concentrated solution storage tank and is connected to the bottom of the concentrated solution storage tank. A valve four is provided on the concentrated solution side drain pipe.

3. A hollow fiber solution regeneration device according to claim 1, characterized in that: Also includes: A hollow fiber membrane module 1 is arranged inside the dilute solution storage tank, wherein the hollow fiber membrane module 1 allows water to pass through and is used to separate water from the solution; The negative pressure pump 1 has an input end connected to the interior of the hollow fiber membrane module 1 through a pipeline 1, and an output end connected to the interior of a pipeline 2.

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