Water purifying device for producing hydrogen from methanol

Abstract

The water purification device comprises a first storage tank and a second storage tank, and a heating module used for heating source water to be filtered is arranged in the first storage tank; a temperature sensor is arranged in the first storage tank, and a refrigeration module is arranged in the second storage tank; a temperature sensor is arranged in the second storage tank; the water purifying device further comprises a collecting pipe and an ultrafiltration module, two mutually independent water conveying pipes are arranged at the inlet end of the collecting pipe, and the two water conveying pipes are communicated with the first storage tank and the second storage tank respectively; first water conveying pumps are arranged on the two water conveying pipes; the inlet end of the ultrafiltration module is connected with the outlet end of the collecting pipe through a drainage pipe, and a temperature sensor is arranged on the drainage pipe; the heating module, the refrigerating module, the temperature sensors and the first water conveying pumps are electrically connected with the controller. By means of the heating module and the refrigerating module, it can be guaranteed that source water entering the ultrafiltration module is always in the optimal temperature range, and therefore the water purification efficiency is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of methanol-to-hydrogen production equipment, and particularly to a water purification device for methanol-to-hydrogen production. Background Art

[0002] Methanol-to-hydrogen production is the main hydrogen production route adopted in China. In its process flow, methanol vapor needs to be mixed with water vapor, and the water vapor is usually produced by a steam generator. In order to avoid introducing too many impurities during the reaction, the water input into the steam generator must have a high purity. In the prior art, ultrafiltration membranes are generally used to remove ions in water. However, the best filtration efficiency of the ultrafiltration equipment has certain requirements for temperature. Above or below this temperature range, the processing efficiency of the ultrafiltration equipment will decrease, and the water source is affected by room temperature, resulting in a large fluctuation range of water temperature, unstable working state of the ultrafiltration module, and affecting the water purification efficiency. Summary of the Utility Model

[0003] The main purpose of this application is to provide a water purification device for methanol-to-hydrogen production, aiming to solve the defect of low water purification efficiency in the prior art.

[0004] This application achieves the above purpose through the following technical solutions:

[0005] A water purification device for methanol-to-hydrogen production, including a first storage tank;

[0006] A heating module, the heating module is arranged in the first storage tank, and the heating module is used to heat the source water to be filtered; a temperature sensor is arranged in the first storage tank;

[0007] A second storage tank, a refrigeration module for preparing cold water is arranged in the second storage tank; a temperature sensor is arranged in the second storage tank;

[0008] A confluence pipe, the inlet end of the confluence pipe is provided with two independent water delivery pipes, and the two water delivery pipes are respectively connected to the first storage tank and the second storage tank; first water pumps are arranged on both of the two water delivery pipes;

[0009] An ultrafiltration module, the inlet end of the ultrafiltration module is connected to the outlet end of the confluence pipe through a drain pipe, and a temperature sensor is arranged on the drain pipe;

[0010] A controller, the controller is electrically connected to the heating module, the refrigeration module, each temperature sensor and each first water pump.

[0011] Optionally, the heating module includes a mounting plate and a plurality of heating rods. One end of each heating rod is respectively connected to the mounting plate, and the other end of each heating rod is respectively inserted into the first storage tank; a connecting lug plate adapted to the mounting is provided at the top of the first storage tank.

[0012] Optionally, the heating module further includes a cage made of an aluminum plate or a copper plate, and the cage is respectively connected to one end of each heating rod inserted into the first storage tank.

[0013] Optionally, the refrigeration module includes a circulation pipe and a chiller. The circulation pipe is arranged in the second storage tank. The outlet end of the chiller is connected to the inlet end of the circulation pipe, and the inlet end of the chiller is connected to the outlet end of the circulation pipe; the chiller is electrically connected to the controller.

[0014] Optionally, a water replenishing pipe and a liquid level gauge are provided on both the first storage tank and the second storage tank, and a solenoid valve is provided on the water replenishing pipe; each liquid level gauge and each solenoid valve are respectively electrically connected to the controller.

[0015] Optionally, the outlet ends of the two water delivery pipes are arranged opposite to each other; a flow guiding plate for guiding the mixing of water flows is further arranged in the confluence pipe.

[0016] Optionally, the confluence pipe includes a pipe body. A sealing cover is provided at the top of the pipe body. The flow guiding plate is arranged in a spiral structure, and a support column is further arranged on the flow guiding plate. A water passing hole communicating with the drain pipe is provided at the bottom of the support.

[0017] Optionally, a rubber sealing ring is further sleeved on the edge of the flow guiding plate, and the rubber sealing ring is closely fitted with the inner wall of the pipe body.

[0018] Optionally, the ultrafiltration module includes a plurality of mutually independent ultrafiltration tanks. A water delivery branch pipe is provided at the inlet end of each ultrafiltration tank, and each water delivery branch pipe is respectively connected to the drain pipe; a regulating valve is provided on each water delivery branch pipe, and each regulating valve is respectively electrically connected to the controller.

[0019] Optionally, a buffer tank is further arranged between the confluence pipe and the ultrafiltration module. The buffer tank is connected to the drain pipe; a second water pump connected to each water delivery branch pipe is further provided at the outlet end of the buffer tank.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] This application includes a first storage tank and a second storage tank. A heating module is arranged in the first storage tank, and the heating module is used to heat the source water to be filtered; a temperature sensor is arranged in the first storage tank, and a refrigeration module for preparing cold water is arranged in the second storage tank; a temperature sensor is arranged in the second storage tank; the water purification device further includes a confluence pipe and an ultrafiltration module. The inlet end of the confluence pipe is provided with two independent water pipes, and the two water pipes are respectively connected to the first storage tank and the second storage tank; first water pumps are arranged on both of the two water pipes; the inlet end of the ultrafiltration module is connected to the outlet end of the confluence pipe through a drain pipe, and a temperature sensor is arranged on the drain pipe; the heating module, the refrigeration module, each temperature sensor and each first water pump are respectively electrically connected to a controller.

[0022] When the water purification device of this application is in use, the source water to be filtered is stored in the first storage tank, its temperature is detected by the temperature sensor, and at the same time, the refrigeration module is started to lower the water temperature in the second storage tank. If the temperature is too low, the heating module is used to heat the source water to be filtered to make it reach the specified temperature range, and then the source water to be filtered is transported to the ultrafiltration module for filtration through the first water pump;

[0023] If the temperature of the source water to be filtered is too high, the heating module is turned off, and at the same time, the chilled water in the second storage tank is pumped out through the first delivery pump, and the chilled water is mixed with the source water with a higher temperature in the confluence pipe to ensure that the temperature of the source water to be filtered is within the required range, and finally the source water to be filtered is input into the ultrafiltration module for filtration;

[0024] Compared with the prior art, this application can ensure that the source water entering the ultrafiltration module is always within the optimal temperature range, so as to ensure that the ultrafiltration module can always filter in the best state, guarantee the working efficiency of the ultrafiltration module, which is not only beneficial to improving the water treatment efficiency, but also can ensure the water treatment quality;

[0025] Secondly, compared with the prior art, this application realizes the direct heating of the source water through the heating module, and when reducing the temperature, it is carried out by directly adding chilled water to the source water, which can effectively improve the control ability of the source water temperature, realize the rapid adjustment of the water temperature, and guarantee the working efficiency of the ultrafiltration module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. 1 is a schematic structural diagram of a water purification device for methanol-to-hydrogen provided in Embodiment 1 of this application;

[0027] Figure 2 FIG. 2 is a cross-sectional view of the first storage tank;

[0028] Figure 3Cross-sectional view of the second storage tank;

[0029] Figure 4 Cross-sectional view of the manifold;

[0030] Figure 5 Schematic structural diagram of another optional mode of a water purification device for methanol-to-hydrogen production provided in Embodiment 1 of the present application;

[0031] Reference numerals: 1 - first storage tank, 2 - temperature sensor, 3 - second storage tank, 4 - manifold, 5 - water delivery pipe, 6 - first water pump, 7 - drain pipe, 8 - controller, 9 - mounting plate, 10 - heating rod, 11 - connecting ear plate, 12 - cage, 13 - circulation pipe, 14 - chiller, 15 - makeup water pipe, 16 - liquid level gauge, 17 - solenoid valve, 18 - baffle plate, 19 - rubber sealing ring, 20 - ultrafiltration tank, 21 - water delivery branch pipe, 22 - regulating valve, 23 - buffer tank, 24 - second water pump, 401 - pipe body, 402 - sealing cover, 403 - support column, 404 - connecting pipe.

[0032] The realization of the purpose, functional features and advantages of the present application will be further described in conjunction with the embodiments and the accompanying drawings. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "robot coordinate system and / or m" as an example, it includes the robot coordinate system scenario, or the m scenario, or the scenario where both the robot coordinate system and m are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0037] Embodiment 1

[0038] Referring to Figures 1 to 4 , this embodiment discloses a water purification device for hydrogen production from methanol, including a first storage tank 1, a second storage tank 3, and a confluence pipe 4. The first storage tank 1 includes a tank body, and an installation hole is provided at the top of the tank body. A connecting ear plate 11 is further provided at the inlet end of the installation hole;

[0039] A heating module is further provided in the tank body. The heating module includes a mounting plate 9 and a plurality of heating plates. One end of each heating rod 10 is respectively connected to the mounting plate 9. At the same time, the mounting plate 9 and the connecting ear plate 11 are connected by connecting bolts; one end of each heating plate passes through the installation hole and inserts into the tank body;

[0040] The heating module further includes a retaining frame 12. One end of each heating tube inserted into the tank body is respectively connected to the retaining frame 12; the retaining frame 12 is made of aluminum plate or copper plate;

[0041] By using a plurality of heating rods 10 and directly placing each heating rod 10 in the tank body, the source water in multiple areas in the tank body can be directly heated, thereby improving the heating efficiency and at the same time reducing the temperature difference of the source water between different areas; at the same time, through the retaining frame 12, not only can the positions of each heating rod 10 be ensured to be stable, but also the heat can be quickly diffused to the area in the tank body far from the heating rod 10 through the stabilizing frame, which is beneficial to improving the heating efficiency and further improving the ability to control the water temperature;

[0042] The top of the second storage tank 3 is also provided with a mounting hole, and a cover plate is arranged on the mounting hole; a refrigeration module is further arranged in the second storage tank 3, and the refrigeration module includes a circulation pipe 13 and a chiller 14. The circulation pipe 13 is arranged in the second storage tank 3, and its inlet end and outlet end both pass through the cover plate and extend outside the second storage tank 3. The outlet end of the chiller 14 is connected to the inlet end of the circulation pipe 13, and the inlet end of the chiller 14 is connected to the outlet end of the circulation pipe 13;

[0043] The chiller 14 can quickly produce circulating water with a lower temperature, and at the same time, the circulating water is introduced into the second storage tank 3 through the circulation pipe 13 to prepare chilled water. Secondly, by realizing the method of preparing a large amount of chilled water, it can effectively ensure the rapid cooling of the source water with too high temperature, which is beneficial to improving the temperature control efficiency.

[0044] Water supply pipes 5 are arranged on both the first storage tank 1 and the second storage tank 3, and water pumps are arranged on both the water supply pipes 5;

[0045] The confluence pipe 4 includes a pipe body 401, and a sealing cover 402 is arranged on the top of the pipe body 401. The outlet ends of the two water supply pipes 5 are communicated with the upper region of the pipe body 401, and it should be noted that the outlet ends of the two water supply pipes 5 are arranged opposite to each other;

[0046] The two water supply pipes 5 arranged opposite to each other can ensure that the water input into the confluence pipe 4 collides violently, so as to fully mix the water at different temperatures and realize the rapid control of the water temperature;

[0047] Furthermore, water replenishing pipes 15 and liquid level gauges 16 are arranged on both the first storage tank 1 and the second storage tank 3, and electromagnetic valves 17 are arranged on the water replenishing pipes 15; each of the liquid level gauges 16 and each of the electromagnetic valves 17 are respectively electrically connected to the controller 8;

[0048] A flow guide plate 18 is further arranged in the pipe body 401. The flow guide plate 18 has a spiral structure. A support column 403 is arranged in the middle of the flow guide plate 18. The flow guide plate 18 is attached to the support column 403. At the same time, a rubber sealing ring 19 is sleeved on the edge of the flow guide plate 18, and the rubber sealing ring 19 is closely attached to the inner wall of the pipe body 401;

[0049] The bottom of the support column 403 is in contact with the bottom of the pipe body 401, so as to provide stable support for the entire flow guide plate 18 and at the same time can accurately define the installation position of the flow guide plate 18;

[0050] A connecting pipe is arranged at the bottom of the pipe body 401, and the connecting pipe is communicated with the drain pipe 7;

[0051] The water purification device further includes an ultrafiltration module, which includes a number of independent ultrafiltration tanks 20. A water delivery branch pipe 21 is provided at the inlet end of each ultrafiltration tank 20, and each water delivery branch pipe 21 is respectively connected to the drain pipe 7; a regulating valve 22 is provided on each water delivery branch pipe 21, and each regulating valve 22 is electrically connected to the controller 8; at the same time, a second water pump 24 is also provided on the drain pipe 7;

[0052] Referring to Figure 5 , further, a buffer tank 23 is provided between the confluence pipe 4 and the ultrafiltration module. Drain pipes 7 are provided at both the inlet end and the outlet end of the buffer tank 23, and a drain pump is also provided on the drain pipe 7 on one side of the outlet end; a water delivery branch pipe 21 is provided at the inlet end of each ultrafiltration tank 20, and each water delivery branch pipe 21 is respectively connected to the drain pipe 7;

[0053] When the water purification device of the present application is in use, the source water to be filtered is stored in the first storage tank, its temperature is detected by a temperature sensor, and at the same time, the refrigeration module is started to lower the water temperature in the second storage tank. If the temperature is too low, the source water to be filtered is heated by the heating module to make it reach the specified temperature range, and then the source water to be filtered is pumped into the ultrafiltration module for filtration by the first water pump;

[0054] If the temperature of the source water to be filtered is too high, the heating module is turned off, and at the same time, the chilled water in the second storage tank is pumped by the first delivery pump, and the chilled water is mixed with the source water with a higher temperature in the confluence pipe to ensure that the temperature of the source water to be filtered is within the required range, and finally the source water to be filtered is input into the ultrafiltration module for filtration;

[0055] Compared with the prior art, the present application can ensure that the source water entering the ultrafiltration module is always within the optimal temperature range, so as to ensure that the ultrafiltration module can always filter in the best state, ensure the working efficiency of the ultrafiltration module, which is not only beneficial to improving the water treatment efficiency, but also can ensure the water treatment quality;

[0056] Secondly, compared with the prior art, the present application realizes the direct heating of the source water through the heating module, and when reducing the temperature, it is carried out by directly adding chilled water to the source water, which can effectively improve the control ability of the source water temperature, realize the rapid adjustment of the water temperature, and ensure the working efficiency of the ultrafiltration module.

[0057] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A water purification device for producing hydrogen from methanol, characterized in that: It includes a first storage tank (1); A heating module, the heating module being arranged in the first storage tank (1), the heating module being used to heat the source water to be filtered; a temperature sensor (2) is arranged in the first storage tank (1); A second storage tank (3), wherein a refrigeration module for preparing cold water is provided in the second storage tank (3); a temperature sensor (2) is provided in the second storage tank (3); A confluence pipe (4), wherein the inlet end of the confluence pipe (4) is provided with two mutually independent water pipes (5), the two water pipes (5) being respectively connected to the first storage tank (1) and the second storage tank (3); and a first water pump (6) is provided on each of the two water pipes (5); An ultrafiltration module, wherein the inlet end of the ultrafiltration module is connected to the outlet end of the manifold (4) via a drain pipe (7), and a temperature sensor (2) is provided on the drain pipe (7); A controller (8), wherein the controller (8) is electrically connected to the heating module, the cooling module, each of the temperature sensors (2) and each of the first water delivery pumps (6).

2. A water purification device for producing hydrogen from methanol according to claim 1, characterized in that: The heating module comprises a mounting plate (9) and a plurality of heating rods (10), one end of each heating rod (10) is connected to the mounting plate (9), and the other end thereof is inserted into the first storage tank (1); a connecting ear plate (11) adapted for the mounting is provided on the top of the first storage tank (1).

3. A water purification device for producing hydrogen from methanol according to claim 2, characterized in that: The heating module further comprises a retaining frame (12) made of an aluminum plate or a copper plate, and the retaining frame (12) is respectively connected to one end of each heating rod (10) inserted into the first storage tank (1).

4. A water purification device for producing hydrogen from methanol according to claim 1, characterized in that: The refrigeration module comprises a circulation pipe (13) and a chiller (14); the circulation pipe (13) is arranged in the second storage tank (3); the outlet end of the chiller (14) is connected to the inlet end of the circulation pipe (13); and the inlet end of the chiller (14) is connected to the outlet end of the circulation pipe (13); the chiller (14) is electrically connected to the controller (8).

5. The water purification device for producing hydrogen from methanol according to claim 1, characterized in that: The first storage tank (1) and the second storage tank (3) are both provided with a water supply pipe (15) and a liquid level gauge (16), and the water supply pipe (15) is provided with a solenoid valve (17); each of the liquid level gauges (16) and each of the solenoid valves (17) is electrically connected to the controller (8) respectively.

6. A water purification device for producing hydrogen from methanol according to claim 1, characterized in that: The outlet ends of the two water delivery pipes (5) are arranged opposite to each other; a guide plate (18) for guiding water flow mixing is also arranged in the confluence pipe (4).

7. A water purification device for producing hydrogen from methanol according to claim 6, characterized in that: The conduit (4) comprises a tube body (401), a sealing cover (402) is provided on the top of the tube body (401), the guide plate (18) is provided in a spiral structure, a support column (403) is further provided on the guide plate (18), and a connecting pipe (404) connected to the drain pipe (7) is provided at the bottom of the conduit (4).

8. A water purification device for producing hydrogen from methanol according to claim 7, characterized in that: The edge of the guide plate (18) is also sleeved with a rubber sealing ring (19), and the rubber sealing ring (19) is tightly fitted with the inner wall of the tube body (401).

9. The water purification device for producing hydrogen from methanol according to claim 1, characterized in that: The ultrafiltration module comprises a plurality of mutually independent ultrafiltration tanks (20), each of the inlet ends of the ultrafiltration tanks (20) being provided with a water delivery branch pipe (21), each of the water delivery branch pipes (21) being respectively connected to the drain pipe (7); each of the water delivery branch pipes (21) being provided with a regulating valve (22), each of the regulating valves (22) being respectively electrically connected to the controller (8).

10. A water purification device for producing hydrogen from methanol according to claim 9, characterized in that: A buffer tank (23) is further provided between the manifold (4) and the ultrafiltration module, and the buffer tank (23) is in communication with the drain pipe (7); a second water delivery pump (24) connected to each of the water delivery branches (21) is further provided at the outlet end of the buffer tank (23).

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