Hydrogen scrubber and electrolytic chlorine and hydrogen production system

Abstract

The present invention relates to the technical field of hydrogen production, and discloses a hydrogen scrubber and a chlorine electrolysis hydrogen production system. The hydrogen scrubber comprises an air inlet chamber and a tube shell, one end of the air inlet chamber is provided with an air inlet, and the other end is connected to the tube shell through a partition, a capillary tube bundle and a movable baffle are provided in the tube shell, one end of the capillary tube bundle passes through the partition and communicates with the air inlet chamber, and the other end is fixed to the movable baffle, and the capillary tube bundle can be pulled to move by moving the movable baffle, wherein the capillary tube bundle comprises a plurality of capillaries, and a plurality of holes for allowing gas to pass are distributed on the tube wall of each capillary tube. In the chlorine electrolysis hydrogen production system, the hydrogen scrubber of the present invention is used to purify the hydrogen containing chlorine, and a significantly better dechlorination effect can be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production, and in particular to a hydrogen scrubber and a chlorine electrolysis hydrogen production system, and more particularly to a capillary aeration hydrogen scrubber and a chlorine electrolysis hydrogen production system for producing chlorine and hydrogen from electrolytic desulfurization wastewater or seawater, wherein a small amount of chlorine entrained in hydrogen produced by electrolytic desulfurization wastewater or seawater is absorbed by a strong alkaline solution to obtain purer hydrogen. Background Art

[0002] Sodium chloride solution is electrolyzed without diaphragm to generate chlorine, hydrogen and sodium hydroxide. The generated chlorine and sodium hydroxide react immediately to generate sodium hypochlorite, that is, sodium chloride is electrolyzed without diaphragm to finally generate sodium hypochlorite and hydrogen. Desulfurization wastewater or seawater contains high concentration of sodium chloride. After treatment, sodium hypochlorite and hydrogen can be obtained by electrolysis. The electrolysis of desulfurization wastewater or seawater to produce chlorine has the advantages of easy availability of chlorine raw materials, low cost, stable and reliable equipment operation, etc., and can be used for circulating water disinfection, sterilization, algae removal, etc. in coastal power plants. Since the hydrogen produced by the electrolysis of desulfurization wastewater or seawater without diaphragm contains trace amounts of chlorine, it does not meet the requirements of hydrogen used in other process sections such as coastal power plants. It is generally discharged after being diluted to a safe concentration. Hydrogen used in other process sections such as power plants generally needs to be produced by electrolysis of pure water, resulting in a waste of resources and energy, which does not meet the national call for energy conservation and emission reduction.

[0003] Conventional methods for removing chlorine generally use a dechlorination tower for dechlorination. The upper part of the dechlorination tower is a spray device, and the lower part is a liquid collecting device. The inlet of the circulation pump is connected to the liquid collecting device at the lower part of the dechlorination tower, and the outlet of the circulation pump is connected to the spray device at the upper part of the dechlorination tower. The circulated liquid is generally an alkaline solution, such as sodium hydroxide solution, potassium hydroxide solution, etc. After the alkaline solution is pressurized by the circulation pump, it passes through the spray device at the upper part of the dechlorination tower to form an alkaline solution spray. The alkaline solution spray reacts with the trace chlorine in the hydrogen introduced to generate a sodium hypochlorite solution, thereby removing the trace chlorine in the hydrogen. This type of dechlorination tower has the following main problems: (1) The alkali solution is in the form of tiny liquid droplets, with large gaps between the liquid droplets. The reaction interface between the alkali solution and the gas is small, and the chlorine removal rate is low; (2) The dechlorination tower is large in size and occupies a large area, which is not easy to match with other equipment; (3) Due to its large size, the dechlorination tower is not easy to make transparent, and the internal operating status is not easy to observe. The operating condition can only be judged by detecting the gas composition after dechlorination; (4) The dechlorination tower spray device is generally a prefabricated spray head, and the direction of the spray head, that is, the spray size, cannot be adjusted after the equipment is put into operation. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems of low chlorine removal rate, large volume, difficult observation and adjustment of the operating state in the existing dechlorination tower, and to provide a hydrogen scrubber and an electrolytic chlorine and hydrogen production system. The hydrogen scrubber of the present invention can effectively improve the chlorine removal rate and reduce the volume of the equipment.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a hydrogen scrubbing device, including an air inlet chamber and a tube shell, wherein one end of the air inlet chamber is provided with an air inlet, and the other end is connected to the tube shell through a partition, and a capillary tube bundle and a movable baffle are provided in the tube shell, one end of the capillary tube bundle passes through the partition and is connected to the air inlet chamber, and the other end is fixed to the movable baffle, and the capillary tube bundle can be moved by moving the movable baffle, wherein the capillary tube bundle includes a plurality of capillaries, and a plurality of holes allowing gas to pass are distributed on the tube wall of each capillary tube.

[0006] Preferably, a liquid inlet is provided below the tube shell for injecting alkaline solution into the tube shell.

[0007] Preferably, a sewage outlet is provided below the tube shell for discharging the alkali solution after the reaction in the tube shell.

[0008] Preferably, an alkali liquid pressure detector is provided at the sewage outlet.

[0009] Preferably, a gas outlet is provided above the tube shell for discharging the dechlorinated hydrogen.

[0010] Preferably, an outlet pressure detector is provided at the outlet.

[0011] Preferably, an ORP detector is provided below the tube shell.

[0012] Preferably, an air intake pressure detector is provided at the air intake.

[0013] Preferably, the hole is a conical hole, the bottom of the conical hole is located on the inner wall of the capillary, and the top of the conical hole is located on the outer wall of the capillary.

[0014] Preferably, the capillary bundle is made of polytetrafluoroethylene or polyvinylidene fluoride.

[0015] Preferably, a connecting shaft and a telescopic device are further provided at one end of the tube shell, and the telescopic device is connected to the movable baffle through the connecting shaft.

[0016] Preferably, a sealing ring is provided on the outer periphery of the movable baffle.

[0017] Preferably, the hydrogen scrubbing device also includes a controller, which controls the air inlet valve at the air inlet, the liquid inlet valve at the liquid inlet, the sewage valve at the sewage outlet and the gas outlet valve at the gas outlet according to the detection data of the alkali liquid pressure detector, the air inlet pressure detector, the gas outlet pressure detector and the ORP detector.

[0018] Preferably, the outer shell of the air inlet chamber is transparent.

[0019] The present invention also provides an electrolytic chlorine and hydrogen production system, which includes an electrolysis device and a hydrogen scrubber, wherein the electrolysis device is used to electrolyze desulfurization wastewater or seawater to obtain a sodium hypochlorite solution and chlorine-containing hydrogen; the hydrogen scrubber is used to purify the chlorine-containing hydrogen from the electrolysis device to obtain purified hydrogen, wherein the hydrogen scrubber is the hydrogen scrubber described above.

[0020] According to the hydrogen scrubbing device of the present invention, a capillary tube bundle with holes is used to form uniform micro bubbles in the alkali solution. The micro bubbles have a large specific surface area, so that the alkali solution and the chlorine in the hydrogen can react quickly, and the removal speed and removal rate of the chlorine can be improved. The capillary tube bundle is pulled to move by a movable baffle, so that the straightening and bending states of the capillary tube bundle can be changed in real time. The different bending degrees of the capillary tube bundle cause the shaking degree of the capillary tube bundle during aeration to change. The different shaking speeds of the capillary tube bundle make the bursting speed of the bubbles generated by aeration controllable, thereby improving the controllability of the dechlorination process.

[0021] In a more preferred embodiment, the holes in the capillary bundle are set as tapered holes, and the capillary bundle has a certain elasticity. When in the straight state, the expansion and contraction amount of the capillary bundle is finely adjusted by the expansion and contraction device, so that the shape of the tapered holes in the capillary tube wall changes, and the microscopic morphology of the aeration bubbles can be adjusted to make the bubbles smaller and easier to break, so as to react with the alkali solution in a timely and effective manner, thereby further improving the dechlorination effect.

[0022] In another preferred embodiment, by setting an alkali liquid pressure detector at the sewage outlet and a gas outlet pressure detector at the gas outlet, the liquid pressure below the alkali liquid and the gas pressure above the alkali liquid can be detected, and the liquid level of the alkali liquid can be detected in real time by calculating the pressure difference, thereby avoiding a decrease in the chlorine removal rate due to too little alkali liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the hydrogen scrubbing device of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the capillary in the hydrogen scrubbing device described in the present invention.

[0025] Description of Reference Numerals

[0026] 1. Drain valve; 2. Alkali liquid pressure detector; 3. Liquid inlet valve; 4. Drain port; 5. Inlet valve; 6. Inlet port; 7. Inlet pressure detector; 8. Inlet chamber; 9. Partition; 10. Exhaust valve; 11. Exhaust port; 12. Exhaust pressure detector; 13. Capillary bundle; 14. Tube shell; 15. Sealing ring; 16. Movable baffle; 17. Connecting shaft; 18. Telescopic device; 19. ORP detector; 130. Hole; 131. Cone bottom; 132. Cone top. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0028] In the description of the present application, the term “comprise” and any variations thereof are intended to be non-exclusive inclusions, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may exist or be added.

[0029] In addition, terms indicating orientation or positional relationships, such as “upper”, “lower”, “top”, “bottom”, “inside” and “outside”, are described based on the orientation or relative positional relationships shown in the drawings and are merely simplified descriptions for the convenience of describing the present application. They do not indicate that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation and therefore should not be construed as limitations on the present application.

[0030] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] like Figure 1 and 2As shown, the hydrogen scrubbing device of the present invention comprises an air inlet chamber 8 and a tube shell 14, wherein one end of the air inlet chamber 8 is provided with an air inlet 6, and the other end is connected to the tube shell 14 through a partition 9, wherein a capillary tube bundle 13 and a movable baffle 16 are provided in the tube shell 14, wherein one end of the capillary tube bundle 13 passes through the partition 9 and communicates with the air inlet chamber 8, and the other end is fixed on the movable baffle 16, and the capillary tube bundle 13 can be pulled to move by moving the movable baffle 16, wherein the capillary tube bundle 13 comprises a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are distributed on the tube wall of each capillary tube. A liquid inlet is provided below the tube shell 14 for injecting alkali solution into the tube shell 14.

[0032] According to the hydrogen scrubbing device of the present invention, hydrogen containing a trace amount of chlorine (such as hydrogen generated by desulfurization wastewater or seawater without diaphragm electrolysis) is injected into the air inlet chamber 8 through the air inlet 6, and then the hydrogen containing a trace amount of chlorine is ejected in the form of bubbles through the capillary bundle 13 and the holes 130 on the tube wall of the capillary; an alkaline solution (such as sodium hydroxide solution, potassium hydroxide solution, etc.) is injected into the tube shell 14 through the liquid inlet, and the hydrogen bubbles contact and react with the alkaline solution in the tube shell 14 to generate a sodium hypochlorite solution, thereby removing the trace amount of chlorine in the hydrogen.

[0033] In the hydrogen scrubbing device of the present invention, a liquid inlet valve 3 is provided at the liquid inlet of the tube shell 14, which is used to control the amount and speed of alkali solution injected into the tube shell 14 through the liquid inlet. The liquid inlet valve 3 is generally installed up and down. Under normal conditions, it is in a closed state. After the alkali solution after the reaction in the tube shell 14 is completely discharged, new alkali solution is injected.

[0034] In the hydrogen scrubbing device described in the present invention, a drain port 4 is provided below the tube shell 14 for discharging the alkali liquid after the reaction in the tube shell 14. A drain valve 1 is provided corresponding to the drain port 4. The drain valve 1 is generally installed up and down. Under normal conditions, it is in a closed state. When the alkali liquid inside the tube shell 14 needs to be replaced, the drain valve 1 is opened to discharge the alkali liquid after the internal reaction. The drain port 4 is preferably provided with an alkali liquid pressure detector 2 for detecting the liquid pressure below the alkali liquid in the tube shell 14. The alkali liquid pressure detector 2 can be installed laterally.

[0035] In the hydrogen scrubbing device described in the present invention, an outlet 11 is provided above the tube shell 14 for discharging the dechlorinated hydrogen. An outlet valve 10 is provided corresponding to the outlet 11. The outlet valve 10 can be installed up and down or sideways. An outlet pressure detector 12 is preferably provided at the outlet 11 for detecting the gas pressure above the alkali solution in the tube shell 14. The outlet pressure detector 12 can be installed up and down or sideways.

[0036] In the hydrogen scrubbing device of the present invention, an ORP detector 19 is disposed below the tube shell 14 to detect the ORP value of the alkaline solution in the tube shell 14 .

[0037] In the hydrogen scrubbing device of the present invention, the liquid inlet, the sewage outlet 4 , the gas outlet 11 and the ORP detector 19 are all arranged in the alkali solution storage area in the tube shell 14 , and should not be arranged in the active area of ​​the active baffle 16 .

[0038] In the hydrogen scrubbing device described in the present invention, an air inlet valve 5 is provided at the air inlet 6, which is used to control the amount and speed of hydrogen containing trace chlorine gas injected into the air inlet chamber 8 through the air inlet 6. The air inlet valve 5 can be installed up and down. Under normal conditions, it is in an open state. In a preferred case, an air inlet pressure detector 7 is provided at the air inlet 6, and the air inlet pressure detector 7 can be installed up and down or side-mounted. In a more preferred embodiment, the gas flow rate injected through the air inlet 6 is controlled to be below 5m / s (such as 1-5m / s, preferably 3-5m / s) to keep the air flow in the air inlet chamber 8 stable.

[0039] In the hydrogen scrubbing device of the present invention, the outer shell of the air inlet chamber 8 is transparent. In a specific embodiment, the air inlet chamber 8 adopts a transparent circular tubular outer shell.

[0040] In the hydrogen scrubbing device of the present invention, one side of the air inlet chamber 8 is sealed with a blind plate and an air inlet 6 is reserved, and the other side is reserved with a sealing flange, and the flange specifications are the same as the flange specifications reserved by the tube shell 14.

[0041] In the hydrogen scrubbing device of the present invention, the capillary tube bundle 13 is made of a material resistant to corrosion by alkali liquid and chlorine. In a preferred embodiment, the capillary tube bundle 13 is made of polytetrafluoroethylene or polyvinylidene fluoride.

[0042] In the hydrogen scrubbing device described in the present invention, the capillary bundle 13 includes a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are evenly distributed on the wall of each capillary. In a preferred embodiment, the hole 130 is a conical hole, and the cone bottom 131 of the conical hole is located on the inner wall of the capillary, and the cone top 132 is located on the outer wall of the capillary. When the intake air is in a non-pressure state, the hole top 132 of the conical hole of the capillary is in a closed state. When the intake air has a certain pressure, the hole top 132 of the conical hole of the capillary is opened by relying on the pressure of the gas and the elasticity of the capillary to output micro bubbles; when the intake air pressure disappears, the hole top 132 of the conical hole of the capillary shrinks under the pressure of the alkali solution and the elasticity of the capillary wall, and the hole top 132 of the conical hole of the capillary is closed. A number of capillaries form a capillary bundle 13, one end of the capillary bundle 13 is fixed on the partition 9 on the air intake side. The fixing method can be to use an adhesive such as epoxy resin glue to bond the outer wall of the capillary bundle into a whole, and then the bundle is fixed to the partition 9 on the air intake side. It should be noted that the inner wall of the capillary bundle 13 passes through the partition 9 and is connected to the air intake chamber 8. The other end of the capillary bundle 13 is fixed on the movable baffle 16. The fixing method can be to use an adhesive such as epoxy resin glue to bond the outer wall of the capillary bundle into a whole, and then the capillary bundle is fixed to the movable baffle 16 as a whole. It should be noted that the inner wall of the capillary does not pass through the movable baffle 16.

[0043] In the hydrogen scrubbing device of the present invention, one end of the capillary tube bundle 13 is fixed on the movable baffle 16. By moving the movable baffle 16, the capillary tube bundle 13 can be pulled to move, so that the capillary tube bundle 13 can be changed in real time between the straight state and the bent state. The different bending degrees of the capillary tube bundle 13 change the degree of shaking of the capillary tube bundle 13 during aeration. The different shaking speeds of the capillary tube bundle 13 make the bursting speed of the bubbles generated by aeration controllable, so that the dechlorination process is controllable; and in a preferred case, the material of the capillary tube bundle 13 is polytetrafluoroethylene or polyvinylidene fluoride, and the capillary tube bundle 13 has a certain elasticity. In the straight state, by moving the movable baffle 16, the expansion and contraction amount of the capillary tube bundle 13 is finely adjusted, so that the shape of the tapered hole of the capillary tube wall is changed, and the microscopic morphology of the aeration bubbles can be adjusted, so that the bubbles are smaller and easier to break, and react with the alkali solution in a timely and effective manner, thereby further improving the dechlorination effect.

[0044] In a preferred embodiment, a connecting shaft 17 and a telescopic device 18 are further provided at one end of the tube shell 14 (the end opposite to the air inlet chamber 8), and the telescopic device 18 is connected to the movable baffle 16 through the connecting shaft 17. The connecting shaft 17 can be made of stainless steel, one side of which is connected to the movable baffle 16, and the other side is connected to the telescopic device 18. The telescopic device 18 can be an electric telescopic device, and the power part of the electric telescopic device adopts a servo motor, and the telescopic length of the telescopic device is accurately adjusted by a servo motor controller.

[0045] In a preferred embodiment, a groove is formed on the outer periphery of the movable baffle 16, and a sealing ring 15 (such as an O-ring) is arranged along the groove. The sealing ring 15 can prevent air leakage and liquid leakage.

[0046] In a preferred embodiment, the hydrogen scrubber further comprises a controller, which controls the inlet valve 5 at the air inlet 6, the liquid inlet valve 3 at the liquid inlet, the drain valve 1 at the drain port 4, and the outlet valve 10 at the air outlet 11, respectively, according to the detection data of the alkali liquid pressure detector 2, the inlet pressure detector 7, the outlet pressure detector 12, and the ORP detector 19. The controller may be a programmable logic controller, or a single-chip microcomputer, etc. In a specific implementation manner, by collecting data information of the alkali liquid pressure detector 2 and the outlet pressure detector 12 and calculating the difference between the two data, data information of the height of the alkali liquid in the tube shell 14 can be obtained. The height of the alkali liquid should be higher than the maximum height of the capillary tube bundle 13 shaking during aeration. In one embodiment, the capillary tube bundle 13 is installed at the lower 1 / 4 of the tube shell, and the maximum height of the capillary tube bundle 13 during aeration shaking does not exceed 1 / 2 of the height of the tube shell 14. The height of the alkali liquid is controlled at 3 / 4 of the height of the tube shell 14, and the remaining 1 / 4 of the height of the tube shell 14 is used as a channel for hydrogen circulation. The controller controls the height of the alkali liquid level by controlling the opening and closing of the liquid inlet valve 3 and the drain valve 4. When the alkali liquid level is lower than the set value, the liquid inlet valve 3 is opened to allow the alkali liquid to enter the tube shell 14. When the alkali liquid level is higher than the set value, the drain valve 1 is opened to discharge part of the alkali liquid to reduce the alkali liquid height to the alkali liquid level setting value. When the controller adjusts the alkali liquid level, it is detected that the alkali liquid level is lower than the set value. , the air inlet valve 5 should be closed first to avoid the reduction of chlorine removal rate due to insufficient alkali liquid level, and then the liquid inlet valve 3 should be opened to raise the alkali liquid level to the set value. When it is detected that the alkali liquid level is higher than the set value, the air outlet valve 10 should be closed first to avoid excessive alkali liquid, hydrogen entraining part of the alkali liquid, causing the liquid component in the hydrogen to be too high. When the alkali liquid level drops to the set value, the air outlet valve 10 should be opened; for the ORP detector 19, when the detected ORP value exceeds the set value, the alkali liquid When the hypochlorite generated in the process reaches the maximum value, the air inlet valve 5 should be closed and the drain valve 1 should be opened to discharge the alkali solution in the tube shell 14. During the discharge process, the alkali solution level is detected in real time to keep the alkali solution level at the minimum limit to avoid hydrogen escaping from the drain valve when it is completely discharged. If the air outlet valve 10 is closed, a closed space will be formed in the tube shell 14, and the alkali solution cannot be discharged from the drain valve 1. After the discharge is completed, the drain valve 1 is closed and the liquid inlet valve 3 is opened to make the alkali solution reach the set liquid level value.

[0047] According to a first specific embodiment of the present invention, Figure 1As shown, the hydrogen scrubber comprises an air inlet chamber 8 and a tube shell 14, one end of the air inlet chamber 8 is provided with an air inlet 6, and the other end is connected to the tube shell 14 through a partition 9, a capillary tube bundle 13 and a movable baffle 16 are provided in the tube shell 14, one end of the capillary tube bundle 13 passes through the partition 9 and communicates with the air inlet chamber 8, and the other end is fixed on the movable baffle 16, and the capillary tube bundle 13 can be pulled to move by moving the movable baffle 16, wherein the capillary tube bundle 13 comprises a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are distributed on the tube wall of each capillary; a liquid inlet is provided at the bottom of the tube shell 14 , which is used to inject alkali solution into the tube shell 14. A liquid inlet valve 3 is provided at the liquid inlet of the tube shell 14, which is used to control the amount and speed of the alkali solution injected into the tube shell 14 through the liquid inlet; a sewage outlet 4 is provided below the tube shell 14, which is used to discharge the alkali solution after the reaction in the tube shell 14, and a sewage outlet 1 is correspondingly provided at the sewage outlet 4; an air outlet 11 is provided above the tube shell 14, which is used to discharge the hydrogen after dechlorination, and an air outlet valve 10 is correspondingly provided at the air outlet 11; an air inlet valve 5 is provided at the air inlet 6, which is used to control the amount and speed of hydrogen containing trace chlorine injected into the air inlet chamber 8 through the air inlet 6.

[0048] According to a second specific embodiment of the present invention, Figure 1As shown, the hydrogen scrubbing device includes an air inlet chamber 8 and a tube shell 14, one end of the air inlet chamber 8 is provided with an air inlet 6, and the other end is connected to the tube shell 14 through a partition 9, and a capillary bundle 13 and a movable baffle 16 are provided in the tube shell 14, one end of the capillary bundle 13 passes through the partition 9 and is connected to the air inlet chamber 8, and the other end is fixed on the movable baffle 16, and the capillary bundle 13 can be pulled to move by moving the movable baffle 16, wherein the capillary bundle 13 includes a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are distributed on the tube wall of each capillary; a liquid inlet is provided at the bottom of the tube shell 14 for injecting alkali solution into the tube shell 14, and a liquid inlet valve 3 is provided at the liquid inlet of the tube shell 14 for controlling the injection of alkali solution into the tube shell 14 through the liquid inlet A drain port 4 is provided below the tube shell 14 for discharging the alkali solution after the reaction in the tube shell 14, and a drain valve 1 is provided at the drain port 4; an air outlet 11 is provided above the tube shell 14 for discharging the hydrogen after dechlorination, and an air outlet valve 10 is provided at the air outlet 11; an air inlet valve 5 is provided at the air inlet 6 for controlling the amount and speed of hydrogen containing a trace amount of chlorine injected into the air inlet chamber 8 through the air inlet 6; a connecting shaft 17 and a telescopic device 18 are also provided at one end of the tube shell 14 (the end opposite to the air inlet chamber 8), and the telescopic device 18 is connected to the movable baffle 16 through the connecting shaft 17, and the telescopic length of the telescopic device is adjusted by the telescopic device 18, so as to control the capillary bundle 13 to change between the straight state and the bent state in real time.

[0049] According to a third specific embodiment of the present invention, Figure 1As shown, the hydrogen scrubbing device comprises an air inlet chamber 8 and a tube shell 14, wherein one end of the air inlet chamber 8 is provided with an air inlet 6, and the other end is connected to the tube shell 14 through a partition 9, wherein a capillary tube bundle 13 and a movable baffle 16 are provided in the tube shell 14, wherein one end of the capillary tube bundle 13 passes through the partition 9 and is communicated with the air inlet chamber 8, and the other end is fixed on the movable baffle 16, and the capillary tube bundle 13 can be pulled to move by moving the movable baffle 16, wherein the capillary tube bundle 13 comprises a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are distributed on the tube wall of each capillary tube, wherein the hole 130 is a conical hole, and the cone bottom 131 of the conical hole is located on the inner wall of the capillary tube, and the cone top 132 is located on the outer wall of the capillary tube; a liquid inlet is provided at the bottom of the tube shell 14 for injecting alkali solution into the tube shell 14, and a liquid inlet valve 3 is provided at the liquid inlet of the tube shell 14, Used to control the amount and speed of alkali solution injected into the tube shell 14 through the liquid inlet; a sewage outlet 4 is provided below the tube shell 14 for discharging the alkali solution after the reaction in the tube shell 14, and a sewage valve 1 is correspondingly provided at the sewage outlet 4; an air outlet 11 is provided above the tube shell 14 for discharging hydrogen after dechlorination, and an air outlet valve 10 is correspondingly provided at the air outlet 11; an air inlet valve 5 is provided at the air inlet 6 for controlling the amount and speed of hydrogen containing trace chlorine injected into the air inlet chamber 8 through the air inlet 6; a connecting shaft 17 and a telescopic device 18 are also provided at one end of the tube shell 14 (the end opposite to the air inlet chamber 8), and the telescopic device 18 is connected to the movable baffle 16 through the connecting shaft 17, and the telescopic length of the telescopic device is adjusted by the telescopic device 18, thereby controlling the capillary bundle 13 to change between the straight state and the bent state in real time.

[0050] According to a fourth specific embodiment of the present invention, Figure 1As shown, the hydrogen scrubbing device comprises an air inlet chamber 8 and a tube shell 14, wherein the air inlet chamber 8 adopts a transparent circular tubular shell, one end of the air inlet chamber 8 is provided with an air inlet 6, and the other end is connected to the tube shell 14 through a partition 9, and a capillary tube bundle 13 and a movable baffle 16 are provided in the tube shell 14, one end of the capillary tube bundle 13 passes through the partition 9 and communicates with the air inlet chamber 8, and the other end is fixed on the movable baffle 16, and the movable baffle 16 can be moved to pull the capillary tube bundle 13. The capillary bundle 13 is guided to move, wherein the capillary bundle 13 includes a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are distributed on the wall of each capillary, and the hole 130 is a conical hole, and the cone bottom 131 of the conical hole is located on the inner wall of the capillary, and the cone top 132 is located on the outer wall of the capillary, and the material of the capillary bundle 13 is polytetrafluoroethylene or polyvinylidene fluoride; a liquid inlet is provided below the tube shell 14 for injecting gas into the tube shell 14 The liquid inlet of the tube shell 14 is provided with a liquid inlet valve 3 for controlling the amount and speed of the alkali solution injected into the tube shell 14 through the liquid inlet; a sewage outlet 4 is provided below the tube shell 14 for discharging the alkali solution after the reaction in the tube shell 14, and a sewage outlet 1 is provided at the sewage outlet 4; an air outlet 11 is provided above the tube shell 14 for discharging the hydrogen after dechlorination, and an air outlet valve 10 is provided at the air outlet 11; a gas inlet 6 is provided An air inlet valve 5 is provided for controlling the amount and speed of hydrogen containing a trace amount of chlorine injected into the air inlet chamber 8 through the air inlet port 6; a connecting shaft 17 and a telescopic device 18 are also provided at one end of the tube shell 14 (the end opposite to the air inlet chamber 8), and the telescopic device 18 is connected to the movable baffle 16 through the connecting shaft 17. The telescopic length of the telescopic device is adjusted by the telescopic device 18, thereby controlling the capillary bundle 13 to change between the straight state and the bent state in real time.

[0051] According to a fifth specific embodiment of the present invention, Figure 1As shown, the hydrogen scrubber comprises an air inlet chamber 8 and a tube shell 14. The air inlet chamber 8 adopts a transparent circular tubular shell. One side of the air inlet chamber 8 is sealed with a blind plate and an air inlet 6 is reserved. A sealing flange is reserved on the other side. The flange specification is the same as the flange specification reserved in the tube shell 14. The flange structure of the two realizes a sealed connection. A partition plate 9 is provided at the connecting flange of the air inlet chamber 8 and the tube shell 14. A capillary tube bundle 13 and a movable baffle 16 are provided in the tube shell 14. One end of the capillary tube bundle 13 passes through the partition plate 9 and is connected to the capillary tube bundle 13. The capillary bundle 13 is connected to the air inlet chamber 8, and the other end is fixed on the movable baffle 16. By moving the movable baffle 16, the capillary bundle 13 can be pulled to move, wherein the capillary bundle 13 includes a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are distributed on the wall of each capillary. The hole 130 is a conical hole, and the cone bottom 131 of the conical hole is located on the inner wall of the capillary, and the cone top 132 is located on the outer wall of the capillary. The material of the capillary bundle 13 is polytetrafluoroethylene or polyvinylidene fluoride; a liquid inlet is arranged below the tube shell 14. The shell 14 is provided with a liquid inlet 3 for injecting alkali solution into the shell 14, and a liquid inlet valve 3 is provided at the liquid inlet of the shell 14 for controlling the amount and speed of alkali solution injected into the shell 14 through the liquid inlet; a sewage outlet 4 is provided below the shell 14 for discharging the alkali solution after the reaction in the shell 14, and a sewage outlet 1 is provided at the sewage outlet 4; an air outlet 11 is provided above the shell 14 for discharging hydrogen after dechlorination, and an air outlet valve 10 is provided at the air outlet 11; an air inlet valve 5 is provided at the air inlet 6 for controlling the air inlet and the air outlet 11; The amount and speed of hydrogen containing trace chlorine injected into the air inlet chamber 8 through the air inlet 6; one end of the tube shell 14 (the end opposite to the air inlet chamber 8) is also provided with a connecting shaft 17 and a telescopic device 18, and the telescopic device 18 is connected to the movable baffle 16 through the connecting shaft 17. The telescopic length of the telescopic device is adjusted by the telescopic device 18, thereby controlling the capillary bundle 13 to change between the straight state and the bent state in real time; a groove is formed on the outer periphery of the movable baffle 16, and a sealing ring 15 (such as an O-ring) is arranged along the groove.

[0052] According to a sixth specific implementation of the present invention, Figure 1As shown, the hydrogen scrubber comprises an air inlet chamber 8, a tube shell 14 and a controller. The air inlet chamber 8 adopts a transparent circular tubular shell. One side of the air inlet chamber 8 is sealed with a blind plate and an air inlet 6 is reserved. A sealing flange is reserved on the other side. The flange specification is the same as the flange specification reserved in the tube shell 14, and a sealed connection is achieved through the flange structure of the two. A partition plate 9 is provided at the connecting flange of the air inlet chamber 8 and the tube shell 14; a capillary tube bundle 13 and a movable baffle 16 are provided in the tube shell 14. One end of the capillary tube bundle 13 passes through the partition plate 9 and is connected to the air inlet chamber 8, and the other end is fixed on the movable baffle 16. The capillary tube bundle 13 can be pulled by moving the movable baffle 16. The tube bundle 13 is movable, wherein the capillary tube bundle 13 includes a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are distributed on the tube wall of each capillary tube, and the hole 130 is a conical hole, and the cone bottom 131 of the conical hole is located on the inner wall of the capillary tube, and the cone top 132 is located on the outer wall of the capillary tube. The material of the capillary tube bundle 13 is polytetrafluoroethylene or polyvinylidene fluoride; a liquid inlet is provided below the tube shell 14 for injecting alkali solution into the tube shell 14, and a liquid inlet valve 3 is provided at the liquid inlet of the tube shell 14 for controlling the amount and speed of the alkali solution injected into the tube shell 14 through the liquid inlet; a sewage outlet 4 is provided below the tube shell 14 for draining the inside of the tube shell 14 The alkali solution after the reaction is discharged, and a drain valve 1 is correspondingly arranged at the drain port 4; an outlet port 11 is arranged above the tube shell 14 for discharging the hydrogen after dechlorination, and an outlet valve 10 is correspondingly arranged at the outlet port 11; an inlet valve 5 is arranged at the inlet port 6 for controlling the amount and speed of hydrogen containing a trace amount of chlorine injected into the inlet chamber 8 through the inlet port 6; a connecting shaft 17 and a telescopic device 18 are also arranged at one end of the tube shell 14 (the end opposite to the inlet chamber 8), and the telescopic device 18 is connected to the movable baffle 16 through the connecting shaft 17, and the telescopic length of the telescopic device is adjusted by the telescopic device 18, so as to control the capillary bundle 13 to be able to straighten and The movable baffle 16 is formed with a groove on its periphery, and a sealing ring 15 (such as an O-ring) is arranged along the groove; the controller controls the air inlet valve 5 at the air inlet 6, the liquid inlet valve 3 at the liquid inlet, the sewage valve 1 at the sewage outlet 4, and the air outlet valve 10 at the air outlet 11 according to the detection data of the alkali liquid pressure detector 2, the air inlet pressure detector 7, the air outlet pressure detector 12, and the ORP detector 19. Specifically, by collecting the data information of the alkali liquid pressure detector 2 and the air outlet pressure detector 12 and calculating the difference between the two data, the data information of the alkali liquid height in the tube shell 14 can be obtained. The alkali liquid height should be above the maximum height of the shaking of the capillary bundle 13 during aeration;The capillary bundle 13 is installed at the lower 1 / 4 of the tube shell. The maximum height of the capillary bundle 13 during aeration and shaking does not exceed 1 / 2 of the height of the tube shell 14. The height of the alkali solution is controlled at 3 / 4 of the height of the tube shell 14, and the remaining 1 / 4 of the height of the tube shell 14 is used as a channel for hydrogen circulation.

[0053] The present invention also provides an electrolytic chlorine and hydrogen production system, which includes an electrolysis device and a hydrogen scrubber, wherein the electrolysis device is used to electrolyze desulfurization wastewater or seawater to obtain a sodium hypochlorite solution and chlorine-containing hydrogen; the hydrogen scrubber is used to purify the chlorine-containing hydrogen from the electrolysis device to obtain purified hydrogen, wherein the hydrogen scrubber is the hydrogen scrubber described above.

[0054] The hydrogen scrubber and the electrolytic chlorine production hydrogen production system of the present invention are further described below by way of examples. The examples are implemented based on the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following examples.

[0055] Example 1

[0056] The hydrogen scrubbing device comprises an air inlet chamber 8, a tube shell 14 and a controller. The air inlet chamber 8 adopts a transparent circular tubular shell. One side of the air inlet chamber 8 is sealed with a blind plate and an air inlet 6 is reserved. A sealing flange is reserved on the other side. The flange specification is the same as the flange specification reserved in the tube shell 14, and a sealed connection is achieved through the flange structure of the two. A partition plate 9 is provided at the connecting flange of the air inlet chamber 8 and the tube shell 14. A capillary tube bundle 13 and a movable baffle 16 are provided in the tube shell 14. One end of the capillary tube bundle 13 passes through the partition plate 9 and is connected to the air inlet chamber 8, and the other end is fixed on the movable baffle 16. The capillary tube bundle 13 can be pulled by moving the movable baffle 16. The capillary bundle 13 is movable, wherein the capillary bundle 13 includes a plurality of capillaries, and a plurality of holes 130 for allowing gas to pass are distributed on the wall of each capillary, and the hole 130 is a conical hole, and the cone bottom 131 of the conical hole is located on the inner wall of the capillary, and the cone top 132 is located on the outer wall of the capillary, and the material of the capillary bundle 13 is polytetrafluoroethylene; a liquid inlet is provided below the tube shell 14 for injecting alkali solution into the tube shell 14, and a liquid inlet valve 3 is provided at the liquid inlet of the tube shell 14 for controlling the amount and speed of injecting alkali solution into the tube shell 14 through the liquid inlet; a sewage outlet 4 is provided below the tube shell 14 for draining the reaction liquid in the tube shell 14 The alkali solution after dechlorination is discharged, and a drain valve 1 is correspondingly arranged at the drain port 4; an outlet port 11 is arranged above the tube shell 14 for discharging the hydrogen after dechlorination, and an outlet valve 10 is correspondingly arranged at the outlet port 11; an inlet valve 5 is arranged at the inlet port 6 for controlling the amount and speed of hydrogen containing trace chlorine injected into the inlet chamber 8 through the inlet port 6; a connecting shaft 17 and a telescopic device 18 are also arranged at one end of the tube shell 14 (the end opposite to the inlet chamber 8), and the telescopic device 18 is connected to the movable baffle 16 through the connecting shaft 17, and the telescopic length of the telescopic device is adjusted by the telescopic device 18, so as to control the capillary bundle 13 to be able to extend in the telescopic direction. The movable baffle 16 is provided with a groove on its outer periphery, and a sealing ring 15 is provided along the groove. The controller controls the inlet valve 5 at the air inlet 6, the liquid inlet valve 3 at the liquid inlet, the drain valve 1 at the drain outlet 4, and the outlet valve 10 at the air outlet 11 according to the detection data of the alkali liquid pressure detector 2, the air inlet pressure detector 7, the air outlet pressure detector 12, and the ORP detector 19. Specifically, by collecting the data information of the alkali liquid pressure detector 2 and the air outlet pressure detector 12 and calculating the difference between the two data, the data information of the alkali liquid height in the tube shell 14 can be obtained. The alkali liquid height should be above the maximum height of the shaking of the capillary bundle 13 during aeration.The capillary bundle 13 is installed at the lower 1 / 4 of the tube shell. The maximum height of the capillary bundle 13 during aeration and shaking does not exceed 1 / 2 of the height of the tube shell 14. The height of the alkali solution is controlled at 3 / 4 of the height of the tube shell 14, and the remaining 1 / 4 of the height of the tube shell 14 is used as a channel for hydrogen circulation.

[0057] The electrolytic chlorine and hydrogen production system comprises an electrolysis device and the above-mentioned hydrogen scrubbing device. Desulfurization wastewater is subjected to diaphragm-free electrolysis in the electrolysis device to generate sodium hypochlorite solution and chlorine-containing hydrogen. The chlorine-containing hydrogen enters the air inlet chamber 8 through the air inlet 6, then passes through the capillary bundle 13 and enters the tube shell 14 through the hole 130, contacts and reacts with the sodium hydroxide solution injected through the liquid inlet to remove chlorine, and the purified hydrogen after dechlorination is collected through the air outlet 11.

[0058] In this embodiment, the capillary is bent by adjusting the telescopic device 16. When the chlorine-containing hydrogen is introduced, the capillary is aerated through the conical hole, which drives the capillary to shake. When shaking, the bubbles are evenly broken. At different times, the chlorine content in the chlorine-containing hydrogen before entering the air inlet chamber 8 and the chlorine content in the purified hydrogen collected through the air outlet 11 are detected, and the results are shown in Table 1.

[0059] Example 2

[0060] The structure of the electrolytic chlorine production and hydrogen production system and hydrogen scrubber used in this embodiment is the same as that of embodiment 1, except that, in this embodiment, the capillary is in a straight state through the telescopic device 16, and the telescopic device 16 is finely adjusted to make the bubbles generated by aeration fine and uniform and easy to break. At different times, the chlorine-containing hydrogen before entering the air inlet chamber 8 and the chlorine content in the purified hydrogen collected through the outlet 11 are detected, and the results are shown in Table 1.

[0061] Comparative Example 1

[0062] Different from Example 1, a conventional dechlorination tower is used to replace the hydrogen scrubber for dechlorination. Specifically, a spray device is provided at the top of the dechlorination tower, and a liquid collecting device is provided at the bottom. The inlet of the circulation pump is connected to the liquid collecting device at the bottom of the dechlorination tower, and the outlet of the circulation pump is connected to the spray device at the top of the dechlorination tower. Desulfurization wastewater is subjected to diaphragm-free electrolysis in the electrolysis device to generate sodium hypochlorite solution and chlorine-containing hydrogen; the chlorine-containing hydrogen enters the dechlorination tower through the air inlet, contacts and reacts with the droplets of the sodium hydroxide solution sprayed through the spray device to remove chlorine, and the purified hydrogen after dechlorination is collected through the air outlet.

[0063] At different times, the chlorine content in the chlorine-containing hydrogen before entering the dechlorination tower and in the purified hydrogen collected through the gas outlet were detected. The results are shown in Table 1.

[0064] Table 1

[0065]

[0066] It can be seen from the results of the above embodiments and comparative examples that in a chlorine-electrolysis hydrogen production system, using the hydrogen scrubber of the present invention to purify hydrogen containing chlorine can achieve significantly better dechlorination effect.

[0067] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A hydrogen scrubbing device, characterized in that: The invention comprises an air inlet chamber (8) and a tube shell (14), wherein one end of the air inlet chamber (8) is provided with an air inlet (6), and the other end is connected to the tube shell (14) via a partition (9), and a capillary tube bundle (13) and a movable baffle (16) are arranged in the tube shell (14), one end of the capillary tube bundle (13) passes through the partition (9) and is connected to the air inlet chamber (8), and the other end is fixed to the movable baffle (16), and the capillary tube bundle (13) can be moved by moving the movable baffle (16), wherein the capillary tube bundle (13) comprises a plurality of capillaries, and a plurality of holes (130) for allowing gas to pass are distributed on the tube wall of each capillary tube.

2. The hydrogen scrubbing device according to claim 1, characterized in that: A liquid inlet is provided below the tube shell (14) for injecting alkaline solution into the tube shell (14).

3. The hydrogen scrubber according to claim 1, characterized in that: A sewage outlet (4) is provided below the tube shell (14) for discharging the alkali solution after the reaction in the tube shell (14).

4. The hydrogen scrubbing device according to claim 3, characterized in that: An alkali liquid pressure detector (2) is provided at the sewage outlet.

5. The hydrogen scrubber according to claim 1, characterized in that: A gas outlet (11) is provided above the tube shell (14) for discharging the dechlorinated hydrogen.

6. The hydrogen scrubber according to claim 5, characterized in that: An air outlet pressure detector (12) is provided at the air outlet (11).

7. The hydrogen scrubber according to claim 1, characterized in that: An ORP detector (19) is arranged below the tube shell (14).

8. The hydrogen scrubber according to claim 1, characterized in that: An air intake pressure detector (7) is provided at the air intake port (6).

9. The hydrogen scrubbing device according to any one of claims 1 to 8, characterized in that: The hole (130) is a conical hole, the bottom (131) of the conical hole is located on the inner wall of the capillary, and the top (132) of the conical hole is located on the outer wall of the capillary.

10. The hydrogen scrubbing device according to any one of claims 1 to 8, characterized in that: The material of the capillary bundle (13) is polytetrafluoroethylene or polyvinylidene fluoride.

11. The hydrogen scrubbing device according to any one of claims 1 to 8, characterized in that: One end of the tube shell (14) is also provided with a connecting shaft (17) and a telescopic device (18), and the telescopic device (18) is connected to the movable baffle (16) via the connecting shaft (17).

12. The hydrogen scrubbing device according to any one of claims 1 to 8, characterized in that: A sealing ring (15) is provided on the outer periphery of the movable baffle (16).

13. The hydrogen scrubbing device according to any one of claims 1 to 8, characterized in that: The invention also comprises a controller, which controls the air inlet valve (5) at the air inlet (6), the liquid inlet valve (3) at the liquid inlet, the sewage discharge valve (1) at the sewage discharge port (4), and the air outlet valve (10) at the air outlet (11) according to the detection data of the alkali liquid pressure detector (2), the air inlet pressure detector (7), the air outlet pressure detector (12), and the ORP detector (19).

14. The hydrogen scrubbing device according to any one of claims 1 to 8, characterized in that: The outer shell of the air inlet chamber (8) is transparent.

15. A system for producing chlorine and hydrogen by electrolysis, characterized in that: The system comprises an electrolysis device and a hydrogen scrubber, wherein the electrolysis device is used to electrolyze desulfurization wastewater or seawater to obtain a sodium hypochlorite solution and chlorine-containing hydrogen; the hydrogen scrubber is used to purify the chlorine-containing hydrogen from the electrolysis device to obtain purified hydrogen, wherein the hydrogen scrubber is the hydrogen scrubber according to any one of claims 1 to 14.

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