CN-224212788-U - Megawatt anion exchange membrane water electrolysis hydrogen production integrated system

CN224212788UCN 224212788 UCN224212788 UCN 224212788UCN-224212788-U

Abstract

The utility model relates to a megawatt anion exchange membrane water electrolysis hydrogen production integrated system which comprises an electrolytic tank subsystem comprising a plurality of large scale AEM electrolytic tanks, an electrolyte circulation subsystem for supplying electrolyte and maintaining circulation, an oxygen treatment subsystem for drying and dehydrogenating oxygen, a drying and purifying subsystem for drying, deoxidizing and purifying hydrogen, a purging subsystem for purging residual gas, a power supply and distribution subsystem for supplying power, a heat dissipation subsystem for cooling and dissipating heat, and a centralized control subsystem for controlling the whole integrated system. The utility model adopts the centralized control subsystem to realize remote control and real-time monitoring on the whole integrated system, so that the whole integrated system is in an optimal running state, the efficiency and the dynamic response rate are effectively improved, the utility model adopts the purging system to purge residual gas, the safety of the system is improved, and adopts low-concentration alkaline liquid to remove hydrogen from oxygen, thereby effectively improving the environmental protection.

Inventors

HUANG DONGQUAN
Xing Peinong
ZHANG BAOCHUN
CAO JU

Assignees

深圳稳石氢能科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250523

Claims (9)

1. The megawatt anion exchange membrane water electrolysis hydrogen production integrated system is characterized by comprising an electrolytic tank subsystem, an electrolyte circulation subsystem, a heat dissipation subsystem, an oxygen treatment subsystem, a hydrogen drying and purifying subsystem, a purging subsystem, a power supply and distribution subsystem and a centralized control subsystem; The electrolytic tank subsystem comprises a plurality of AEM electrolytic tanks, wherein the AEM electrolytic tanks are large-standard AEM electrolytic tanks, and any AEM electrolytic tank is used for producing hydrogen by water electrolysis; the electrolyte circulation subsystem is connected with the electrolytic tank subsystem and is used for providing electrolyte for the electrolytic tank subsystem and maintaining the circulation of the electrolyte; the heat dissipation subsystem is used for cooling and dissipating heat of the integrated system; the oxygen treatment subsystem is used for drying and dehydrogenating oxygen generated by the electrolytic bath subsystem; The hydrogen drying and purifying subsystem is connected with the electrolytic tank subsystem and is used for drying, deoxidizing and purifying the hydrogen generated by the electrolytic tank subsystem; the purging subsystem is used for purging residual gas of the integrated system; The power supply and distribution subsystem is used for supplying power to the integrated system; the centralized control subsystem is used for controlling the electrolytic tank subsystem, the electrolyte circulation subsystem, the oxygen treatment subsystem, the hydrogen drying and purifying subsystem, the purging subsystem, the power supply and distribution subsystem and the heat dissipation subsystem.
2. The megawatt anion exchange membrane water electrolysis hydrogen production integrated system is characterized in that the electrolyte circulation subsystem comprises a pure water machine box, an alkaline water box and a circulation water box, a liquid level meter, a heating rod, a conductivity sensor and a first temperature sensor are arranged in the circulation water box, the liquid level meter is used for detecting the liquid level in the circulation water box in real time, the centralized control subsystem controls the pure water machine box to provide pure water for the circulation water box according to the liquid level, the alkaline water box stores alkaline liquid, the alkaline liquid is mixed with the pure water to form electrolyte, the heating rod is used for heating the electrolyte, the first temperature sensor is used for detecting the temperature of the electrolyte in real time, the conductivity sensor is used for detecting the conductivity of the electrolyte in real time, and the centralized control subsystem controls the alkaline water box to provide alkaline liquid for the circulation water box according to the conductivity and controls the heating rod to heat the electrolyte according to the temperature until the temperature and the conductivity of the electrolyte reach a preset range.
3. The megawatt anion exchange membrane water electrolysis hydrogen production integrated system is characterized in that the electrolyte circulation subsystem further comprises a liquid inlet main pipeline, a plurality of liquid inlet branch pipelines, a plurality of liquid outlet pipelines and a plurality of hydrogen outlet pipelines, a channel port of any AEM electrolytic tank comprises a liquid inlet, a liquid outlet and a gas outlet, one end of any liquid inlet branch pipeline is connected with the liquid inlet main pipeline, the other end of any liquid inlet branch pipeline is respectively connected with the liquid inlet, electrolyte sequentially passes through the liquid inlet main pipeline and the liquid inlet branch pipeline to enter the AEM electrolytic tank, a water pump and a flow meter are arranged in the liquid inlet branch pipeline, the water pump is used for pressurizing and transporting the electrolyte, the flow meter is used for detecting the flow of the electrolyte in real time, and the water pump is controlled by the centralized control subsystem according to the flow until the flow reaches a preset range.
4. The megawatt anion-exchange membrane water electrolysis hydrogen production integrated system according to claim 3, wherein the heat dissipation subsystem comprises a cooling water unit, a cooling water pipeline and a plurality of heat exchangers, wherein any heat exchanger comprises a heat absorption end and a heat dissipation end, any heat absorption end is respectively connected with the liquid outlet and the liquid outlet pipeline and is used for absorbing heat of the electrolyte, the cooling water unit is connected with the cooling water pipeline, any heat dissipation end is respectively connected with the cooling water pipeline, and cooling water generated by the cooling water unit flows through the heat dissipation end through the cooling water pipeline and dissipates the heat.
5. The megawatt anion-exchange membrane water electrolysis hydrogen production integrated system according to claim 4 is characterized in that one end of any liquid outlet pipeline is connected with the heat absorption end, the other end of the liquid outlet pipeline is connected with the circulating water tank, electrolyte sequentially flows through the heat exchanger and the liquid outlet pipeline and then returns to the circulating water pump, the liquid outlet pipeline is provided with a second temperature sensor, the liquid outlet is provided with a third temperature sensor, the second temperature sensor and the third temperature sensor are both used for detecting the temperature of the electrolyte in real time, and the centralized control subsystem controls the heat exchanger according to the measured value of the third temperature sensor until the measured value of the second temperature sensor reaches a preset range.
6. The megawatt anion-exchange membrane water electrolysis hydrogen production integrated system according to claim 5, wherein the oxygen treatment subsystem is connected with the circulating water tank, the oxygen treatment subsystem comprises an oxygen-water separator, a dehydrogenation tower and an in-oxygen hydrogen sensor, the oxygen generated by the AEM electrolytic tank sequentially enters the oxygen-water separator and the dehydrogenation tower after being circulated back to the circulating water tank along with the electrolyte, the oxygen-water separator is used for drying the oxygen, the in-oxygen hydrogen sensor is used for monitoring the hydrogen content of the oxygen in real time, and the dehydrogenation tower is used for removing hydrogen in the oxygen until the hydrogen content of the oxygen reaches a preset discharge standard.
7. The integrated system for producing hydrogen by electrolysis of megawatt anion exchange membrane water according to claim 6, wherein an air outlet of any one of the AEM electrolytic tanks is connected with the hydrogen drying and purifying subsystem through a hydrogen outlet pipeline, the hydrogen drying and purifying subsystem adopts a three-tower process and comprises three dryers, each dryer comprises an adsorbent, and in any cycle, any one of the dryers sequentially goes through a main working state, a secondary working state and a regeneration state, the adsorbent dries, deoxidizes and purifies the hydrogen in the main working state, the dew point of the hydrogen is below-70 ℃, in the secondary working state, the adsorbent approaches adsorption saturation, and in the regeneration state, the adsorbent recovers adsorption capacity again.
8. The megawatt anion exchange membrane water electrolysis hydrogen production integrated system of claim 7, wherein the purging subsystem comprises a nitrogen purging device, a purging main pipeline and a plurality of purging branch pipelines, wherein the nitrogen purging device is connected with the purging main pipeline and is used for providing nitrogen, one end of any purging branch pipeline is connected with the purging main pipeline, and the other end of any purging branch pipeline is respectively connected with the circulating water tank or the AEM electrolytic tank and is used for purging residual gas.
9. The megawatt anion-exchange membrane water electrolysis hydrogen production integrated system of claim 8, wherein the centralized control subsystem controls the power supply and distribution subsystem to process the commercial alternating current so that the commercial alternating current is respectively converted into different required electricity, and the required electricity respectively supplies power to the integrated system.

Description

Megawatt anion exchange membrane water electrolysis hydrogen production integrated system Technical Field The utility model relates to the technical field of water electrolysis hydrogen production, in particular to a megawatt anion exchange membrane water electrolysis hydrogen production integrated system. Background In order to achieve the aim of carbon emission reduction, the development of hydrogen energy has become global consensus, the application of hydrogen energy in the fields of energy storage, power generation, traffic, metallurgy, chemical industry and the like is gradually expanding, and the development of a water electrolysis hydrogen production system is important to realize the large-scale application of hydrogen energy. The current mainstream water electrolysis hydrogen production system mainly has 3 modes, including alkaline water electrolysis hydrogen production (AWE), proton exchange membrane water electrolysis hydrogen Production (PEM) and high-temperature solid oxide water electrolysis hydrogen production (SOEC), however, the AEM electrolysis hydrogen production scheme integrates the advantages of high efficiency and dynamic response block of the PEM, and avoids the disadvantages of high hydrogen production cost of the PEM, and the like, while the AWE and the SOEC have the disadvantages of low starting efficiency, environmental protection, high maintenance cost and the like. Disclosure of utility model The utility model aims to solve the technical problems of low efficiency, high maintenance cost, slow dynamic response and environmental protection, and provides a megawatt-level anion exchange membrane water electrolysis hydrogen production integrated system aiming at the defects in the prior art. The technical scheme adopted for solving the technical problems is as follows: constructing a megawatt anion exchange membrane water electrolysis hydrogen production integrated system, wherein the megawatt anion exchange membrane water electrolysis hydrogen production integrated system comprises an electrolytic tank subsystem, an electrolyte circulation subsystem, a heat dissipation subsystem, an oxygen treatment subsystem, a hydrogen drying and purifying subsystem, a purging subsystem, a power supply and distribution subsystem and a centralized control subsystem; the electrolytic tank subsystem comprises a plurality of AEM electrolytic tanks, wherein the AEM electrolytic tanks are large-standard AEM electrolytic tanks, and any AEM electrolytic tank is used for producing hydrogen by water electrolysis; the electrolyte circulation subsystem is connected with the electrolytic tank subsystem and is used for providing electrolyte for the electrolytic tank subsystem and maintaining the circulation of the electrolyte; the heat dissipation subsystem is used for cooling and dissipating heat of the integrated system; the oxygen treatment subsystem is used for drying and dehydrogenating oxygen generated by the electrolytic bath subsystem; The hydrogen drying and purifying subsystem is connected with the electrolytic tank subsystem and is used for drying, deoxidizing and purifying the hydrogen generated by the electrolytic tank subsystem; the purging subsystem is used for purging residual gas of the integrated system; The power supply and distribution subsystem is used for supplying power to the integrated system; the centralized control subsystem is used for controlling the electrolytic tank subsystem, the electrolyte circulation subsystem, the oxygen treatment subsystem, the hydrogen drying and purifying subsystem, the purging subsystem, the power supply and distribution subsystem and the heat dissipation subsystem. Further, the electrolyte circulation subsystem comprises a pure water machine box, an alkaline water box and a circulation water box, wherein a liquid level meter, a heating rod, a conductivity sensor and a first temperature sensor are arranged in the circulation water box, the liquid level meter is used for detecting the liquid level in the circulation water box in real time, the centralized control subsystem controls the pure water machine box to provide pure water for the circulation water box according to the liquid level, alkaline liquid is stored in the alkaline water box, the alkaline liquid is mixed with the pure water to form electrolyte, the heating rod is used for heating the electrolyte, the first temperature sensor is used for detecting the temperature of the electrolyte in real time, the conductivity sensor is used for detecting the conductivity of the electrolyte in real time, and the centralized control subsystem controls the alkaline water box to provide alkaline liquid for the circulation water box according to the conductivity and controls the heating rod to heat the electrolyte according to the temperature until the temperature and the conductivity of the electrolyte reach a preset range. Further, the electrolyte circulation subsystem further comprises a liquid inlet main