TWI717277B - Electrolysis of sea water hydrogen application power generation system - Google Patents

Abstract

This case is an electrolytic seawater hydrogen application power generation system, which includes: a hydrogen source, which contains high content of water and chloride ions; a gas processing unit, one end of which is coupled to the hydrogen source, after processing, used to output a high Purity hydrogen; and a fuel cell unit, one end of which is coupled to the gas processing unit, which has at least a fuel cell stack, an anode and a cathode, the anode is coupled to the high purity hydrogen, and the cathode is coupled to a The air source produces DC power, water and heat source output through the electrochemical reaction of the fuel cell stack.

Description

Electrolysis seawater hydrogen application power generation system

The present invention relates to an electrolytic seawater hydrogen application power generation system, in particular to an electrolysis seawater that uses waste hydrogen source generated by a business unit or a seawater electrolysis device to recover the hydrogen source generated during the production of sodium hypochlorite as the fuel for fuel cell group power generation Hydrogen application power generation system.

According to the general semiconductor process and photoelectric process, the remaining process gas (ie exhaust gas) usually contains ammonia (NH ₃ ), silyl methane (SiH ₄ ), disilyl methane (Si ₂ H ₆ ), phosphating Hydrogen (PH ₃ ), arsenide (AsH ₃ ), trimethylgallium (Ga(CH ₃ ) ₃ ) and high-concentration hydrogen, including ammonia (NH ₃ ), silyl methane (SiH ₄ ), disilyl methane (Si ₂ H ₆ ), phosphine (PH ₃ ), arsine (AsH ₃ ), and trimethylgallium (Ga(CH ₃ ) ₃ ) are all environmental pollutants.

At present, the treatment method for the above-mentioned environmental pollutants is usually to discharge the waste gas directly into the atmosphere after being washed with sulfuric acid or hypochlorous acid. However, this treatment method has many disadvantages. For example, the nitrogen concentration in the treated wastewater reaches tens of thousands of ppm, which is far higher than the legal standard. In addition, hydrogen is directly discharged into the atmosphere with a risk of explosion and causes a waste of hydrogen energy.

In addition, the conventional hydrogen recovery system technology, such as the invention patent of the Republic of China I478864 "Hydrogen Recovery System and Power Generation System", discloses a hydrogen recovery system and power generation system. This hydrogen recovery system is suitable for self-contained hydrogen devices, ammonia and other Hydrogen is recovered from the exhaust gas. This hydrogen recovery system includes an adsorption device, an ammonia decomposition device and a hydrogen filter device. Wherein, the adsorption device is used to adsorb the above-mentioned other gases in the exhaust gas. The ammonia decomposition device is connected with the adsorption device for separating ammonia into nitrogen and hydrogen. The hydrogen filter device is connected with the ammonia decomposition device to separate nitrogen and hydrogen from ammonia. The power generation system is suitable for generating power using hydrogen in exhaust gas containing hydrogen, ammonia and other gases. This power generation system includes a fuel cell and the aforementioned adsorption device and ammonia decomposition device. The fuel cell is connected to the ammonia decomposition device.

Another example is the invention patent No. I497003 of the Republic of China "Hydrogen Recovery and Release Device for Fuel Cells", which discloses a hydrogen recovery and release device for fuel cells. It mainly uses an elastic tank body to store and recover hydrogen gas and a spring unit to pull the tank body to change the volume. When the volume of the stretched tank increases, it can accumulate a considerable amount of hydrogen, and when the volume of the compressed tank is reduced, the recovered hydrogen will be used to increase the use efficiency of the recovered hydrogen release and improve the hydrogen tail gas of the conventional fuel cell hydrogen circuit structure. 、Operational problems such as ineffective use of recovered hydrogen; and install two control valves between the fuel cell and the elastic tank, and a drain tank below the level of the bottom of the elastic tank, so as to control the hydrogen recovery of the fuel cell. The purpose of the release device for air supply, recovery, exhaust, and water removal.

However, the previous case of the above-mentioned invention patent No. I478864 was directed to waste hydrogen containing ammonia, and the source and composition of the waste hydrogen were different; in addition, the previous case of the patent must use an ammonia decomposition device; and the previous case of the patent did not disclose the production of fuel cells The DC power supply can be used for recycling or application. In addition, the technical features of the aforementioned I497003 invention patent have nothing to do with the technical features of the electrolytic seawater hydrogen application power generation system. It is a flaw in the United States.

In view of the above-mentioned shortcomings of the conventional hydrogen recovery system technology, the present invention provides an electrolytic seawater hydrogen application power generation system to improve the above-mentioned shortcomings.

One object of the present invention is to provide a power generation system for electrolysis of seawater hydrogen application, which uses the waste hydrogen source generated by the business unit or the hydrogen source generated by the seawater electrolysis device to recover sodium hypochlorite as the fuel for power generation of the fuel cell stack.

One of the objects of the present invention is to provide a power generation system for electrolysis of seawater and hydrogen, in which the direct current power generated by the fuel cell can be directly supplied to the seawater electrolysis device as a power recovery application.

One object of the present invention is to provide a power generation system for electrolyzed seawater hydrogen application, which has a grid-connected inverter, which can convert the DC power generated by the fuel cell unit into an AC power supply and then merge it into an AC power grid for use.

To achieve the above purpose, the electrolytic seawater hydrogen application power generation system of the present invention includes: a hydrogen source containing high content of water and chloride ions; a gas processing unit, one end of which is coupled to the hydrogen source, and is processed And then used to output a high-purity hydrogen; and a fuel cell unit, one end of which is coupled to the gas processing unit, which has at least a fuel cell stack, an anode and a cathode, the anode is coupled to the high-purity hydrogen, the The cathode is coupled to an air source, and the fuel cell stack performs an electrochemical reaction to generate DC power, water and heat source output.

Wherein, the hydrogen source is a waste hydrogen source generated by a business unit.

Wherein, the hydrogen source is a hydrogen source produced by a seawater electrolysis device during recovery and production of sodium hypochlorite.

Wherein, the gas processing unit further has: a washing device, one end of which is coupled to the hydrogen source, using water or chemical agents as detergents to increase humidity to dilute chloride ions or harmful ions; a water cooling device, one end of which is coupled Connected to the washing device, it can reduce the original moisture content of the gas to below 50% to remove harmful ions; and a humidification device, one end of which is coupled to the water cooling device to increase humidity, dilute harmful ions and promote the fuel The electrochemical reaction of the battery.

Wherein, the pH value of the chemical agent is greater than 8 or less than 5, and its concentration is less than 50%.

Wherein, the fuel cell unit further has: a hydrogen flow or pressure control unit, coupled to the high-purity hydrogen, which can control the flow or pressure of the high-purity hydrogen; and an anode humidification unit, one end of which is coupled to the hydrogen A flow or pressure control unit, the other end of which is coupled to the anode, can humidify the anode; a cooling cycle unit, one end of which is coupled to the fuel cell stack, and can cool the fuel cell stack; an air flow or A pressure control unit, coupled to the air source, can control the flow or pressure of the air source; a cathode humidification unit, one end of which is coupled to the air flow or pressure control unit, and the other end is coupled to the cathode, Humidifying the cathode; and an electronic control unit, one end of which is respectively coupled to the hydrogen flow or pressure control unit, the air flow or pressure control unit, and the fuel cell stack to further control the DC power output.

Wherein, it further has a grid-connected inverter, which is coupled to the fuel cell unit, and can convert the DC power generated by the fuel cell unit into an AC power source and then merge it into an AC power network.

In order to enable your examiner to further understand the structure, features and purpose of the present invention, the drawings and detailed descriptions of preferred specific embodiments are attached as follows.

Please refer to Figures 1 to 3 together, in which Figure 1 shows a block diagram of a preferred embodiment of the electrolytic seawater hydrogen application power generation system; Figure 2 shows a detailed block diagram of a preferred embodiment of the gas processing unit in this case Figure 3 shows a detailed block diagram of the fuel cell unit of a preferred embodiment of this case.

As shown in the figure, the electrolytic seawater hydrogen application power generation system of the present invention includes: a hydrogen source 10; a gas processing unit 20; and a fuel cell unit 30 combined.

Wherein, the hydrogen source 10 contains high content of water vapor and chloride ions. The hydrogen source 10 is, for example, but not limited to, a waste hydrogen source generated by a business unit, or the hydrogen source 10 is, for example, but not limited to, a hydrogen source generated by a seawater electrolysis device when recovering sodium hypochlorite. In this embodiment, the seawater electrolysis device is taken as an example for description, but it is not limited thereto. The chemical reaction formula of the seawater electrolysis device is: NaCl+H ₂ O→NaOCl+H ₂ ↑.

One end of the gas processing unit 20 is coupled to the hydrogen source 10, and is used to output a high-purity hydrogen gas after processing.

Wherein, as shown in FIG. 2, the gas processing unit 20 further has: a washing device 21, one end of which is coupled to the hydrogen source 10 for inputting crude hydrogen, and using water or chemicals as detergents to increase humidity Dilute chloride ions or harmful ions; a water cooling device 22, one end of which is coupled to the washing device 21, which can reduce the original moisture content of the gas to below 50% to remove harmful ions; and a humidification device 23, one end of which is coupled It is connected to the water cooling device 22 to increase humidity to dilute harmful ions again and promote the electrochemical reaction of the fuel cell unit 30.

The pH value of the chemical agent used in the washing device 21 is, for example, but not limited to, greater than 8 or less than 5, and the concentration thereof is, for example, but not limited to, less than 50%.

The water cooling device 22 is, for example, but not limited to, a cyclone water cooling device or a heated active water cooling device to reduce the original moisture content of the gas to, for example, but not limited to, below 50%.

The humidifying device 23 is, for example, but not limited to, an active humidifier or a passive humidifier.

The fuel cell unit 30, one end of which is coupled to the gas processing unit 20, has at least a fuel cell stack 31, an anode and a cathode (all not shown), the anode is coupled to the high-purity hydrogen, the cathode It is coupled to an air source (not shown), and the fuel cell stack 31 performs an electrochemical reaction (the chemical reaction formula is: 2 H ₂ + O ₂ → 2H ₂ O + electric energy + heat) to generate a DC power source , Water and heat source output.

As shown in FIG. 3, the fuel cell unit 30 further has: a hydrogen flow or pressure control unit 32, coupled to the high-purity hydrogen, which can control the flow or pressure of the high-purity hydrogen; and an anode humidification unit 33, One end is coupled to the hydrogen flow or pressure control unit 32, and the other end is coupled to the anode, which can humidify the anode; a cooling cycle unit 34, one end of which is coupled to the fuel cell stack 31, can The fuel cell stack 31 is cooled; an air flow or pressure control unit 35, coupled to the air source, can control the flow or pressure of the air source; a cathode humidification unit 36, one end of which is coupled to the air flow or A pressure control unit 35, the other end of which is coupled to the cathode, which can humidify the cathode; and an electronic control unit 37, one end of which is respectively coupled to the hydrogen flow or pressure control unit 32 and the air flow or pressure control unit 35 And the fuel cell stack 31, which can further control the output of the DC power source. The electronic control unit 37 is, for example, but not limited to, a personal computer or an industrial computer, and the electronic control unit 37 further has a display (not shown). The control unit 37 can control the hydrogen flow or pressure control unit 32, the air flow or pressure control unit 35, and the fuel cell stack 31.

In addition, the electrolytic seawater hydrogen application power generation system of the present invention further has a grid-connected inverter 40, which is coupled to the fuel cell unit 30, and can convert the DC power generated by the fuel cell unit 30 into AC power and then incorporate it An AC power network (not shown).

In summary, through the implementation of the electrolysis seawater hydrogen application power generation system of the present invention, it has the following advantages compared with the conventional hydrogen recovery system: 1. It uses the waste hydrogen source generated by the business unit or the seawater electrolysis device to recover and produce sodium hypochlorite The hydrogen source generated at the time is used as the fuel for the fuel cell stack to generate electricity; 2. The direct current power source generated by the fuel cell can be directly supplied to the seawater electrolysis device as a power recovery application; and 3. It further has a grid-connected inverter It can convert the DC power generated by the fuel cell unit into AC power and then integrate it into an AC power network. Therefore, the electrolytic seawater hydrogen application power generation system of the present invention is indeed more advanced than the conventional hydrogen recovery system.

The disclosure in this case is a preferred embodiment, and any partial changes or modifications that are derived from the technical ideas of the case and can be easily inferred by those who are familiar with the art do not deviate from the scope of the patent right of the case.

In summary, regardless of the purpose, means, and effects of this case, it is showing its technical characteristics that are very different from conventional knowledge, and its first invention is suitable for practical use, and it is also in line with the patent requirements of the invention. I urge your examiner to observe and pray. Granting patents as soon as possible will benefit the society and feel the virtues.

10: Hydrogen source 20: Gas processing unit 21: Washing device 22: Water cooling device 23: Humidification device 30: Fuel cell unit 31: Fuel cell stack 32: Hydrogen flow or pressure control unit 33: Anode humidification unit 34: Cooling circulation unit 35: Air flow or pressure control unit 36: Cathode humidification unit 37: Electronic control unit 40: Grid-connected inverter

FIG. 1 is a schematic diagram showing a block diagram of an electrolytic seawater hydrogen application power generation system according to a preferred embodiment of the present application. FIG. 2 is a schematic diagram showing a detailed block diagram of a gas processing unit of a preferred embodiment of the present application. FIG. 3 is a schematic diagram showing a detailed block diagram of a fuel cell unit according to a preferred embodiment of the present application.

10: Hydrogen source

20: Gas processing unit

30: Fuel cell unit

40: Grid-connected inverter

Claims (9)

An electrolytic seawater hydrogen application power generation system, which includes: A hydrogen source containing high content of water vapor and chloride ions; A gas processing unit, one end of which is coupled to the hydrogen source and used to output a high-purity hydrogen after processing; and A fuel cell unit, one end of which is coupled to the gas processing unit, has a fuel cell stack, an anode and a cathode, the anode is coupled to the high-purity hydrogen, and the cathode is coupled to an air source, by The fuel cell stack performs an electrochemical reaction to produce DC power, water and heat source output. The electrolytic seawater hydrogen application power generation system described in item 1 of the scope of patent application, wherein the hydrogen source is a waste hydrogen source generated by a business unit. The electrolytic seawater hydrogen application power generation system described in the first item of the scope of patent application, wherein the hydrogen source is a hydrogen source produced by a seawater electrolysis device during the recovery and production of sodium hypochlorite. The electrolytic seawater hydrogen application power generation system described in item 1 of the scope of patent application, wherein the gas processing unit further has: A washing device, one end of which is coupled to the hydrogen source, uses water or chemical agents as detergents to increase humidity to dilute chloride ions or harmful ions; A water cooling device, one end of which is coupled to the washing device, which can reduce the original moisture content of the gas to below 50% to remove harmful ions; and A humidification device, one end of which is coupled to the water cooling device to increase humidity and dilute harmful ions again and promote the electrochemical reaction of the fuel cell stack. The electrolytic seawater hydrogen application power generation system described in item 4 of the scope of patent application, wherein the pH value of the chemical agent is greater than 8 or less than 5, and its concentration is less than 50%. For example, the electrolytic seawater hydrogen application power generation system described in item 4 of the scope of patent application, wherein the water cooling device is a cyclone type water cooler or a heated active water cooler to reduce the original moisture content of the gas to below 50%. The electrolysis seawater hydrogen application power generation system described in item 4 of the scope of patent application, wherein the humidification device is an active humidifier or a passive humidifier. The electrolytic seawater hydrogen application power generation system described in item 1 of the scope of patent application, wherein the fuel cell unit further has: A hydrogen flow or pressure control unit, coupled to the high-purity hydrogen, capable of controlling the flow or pressure of the high-purity hydrogen; An anode humidification unit, one end of which is coupled to the hydrogen flow or pressure control unit, and the other end is coupled to the anode, which can humidify the anode; A cooling cycle unit, one end of which is coupled to the fuel cell stack to cool the fuel cell stack; An air flow or pressure control unit, coupled to the air source, capable of controlling the flow or pressure of the air source; A cathode humidification unit, one end of which is coupled to the air flow or pressure control unit, and the other end is coupled to the cathode, which can humidify the cathode; and An electronic control unit, one end of which is respectively coupled to the hydrogen flow or pressure control unit, the air flow or pressure control unit, and the fuel cell stack to further control the DC power output. The electrolytic seawater hydrogen application power generation system described in the first item of the scope of patent application further has a grid-connected inverter, which is coupled to the fuel cell unit to convert the direct current power generated by the fuel cell unit into alternating current After the power supply, it merges into an AC power network.

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