500Nm3/h Hydrogen Production and Compressor System

1.1description

The rated hydrogen production capacity of this project's electrolytic water hydrogen production system is 500 Nm3/h. The equipment includes cooling unit (optional), pure water unit (optional), electrolyzer unit, gas-liquid separation, drying and purification, rectification, control and other systems. Hydrogen output from the production system can be obtained after gas-liquid separation and purification system with a pressure of 1.6MPa(can reach 3Mpa,depend on client request) and a purity of 99.999%. The whole device adopts PLC system control, chain monitoring between each control parameter to realize the safe and stable operation of the system. The power of the whole unit can be adjusted between 10%-120%. By integrating the sub-systems in one skid, the equipment is compact and does not require complex infrastructure and site. At the same time, the device has good human-machine interface interaction, easy operation, and can realize manual and automatic control and real-time monitoring and automatic storage of data.

1.2. Standard for Reference

The below is the device is designed and developed with reference to the following standards, including but not limited to:

1.3. The Process flow and description

1.4. The process flow description

• Tap water is purified and flow into Electrolyzer stack, meantime the deionized fill into buffer tank till get HH lever.

• The water is electrolyzed in stack and generates Hydrogen and Oxygen.

• The hydrogen and oxygen flow into BOP and be separated, oxygen is separated to gas and water, the water flow back into the electrolyzer stack and the gas drain into the air (can be collected and treated if oxygen would be used), meanwhile, the hydrogen separated to gas and liquid by BOP, the liquid back into electrolyzer stack and gas flow into purification.

• The hydrogen is purified to 99.999% then stored in buffer storage.

• The hydrogen is ventilated into air before purity reach 99.999%, and the waste water is drained during purification.

• There is heater exchanger to keep all the system running in reasonable temperature

1.5. The hydrogen production system safety and controlling function description

• Hydrogen leakage detection, three sensors are set for hydrogen content detection in container, once the hydrogen concentration higher than setting, alarm and interlocking work.

• All system Pressure monitoring

• Water circulation management

Ø Deionized water supply in automatically

Ø Deionized water flow controlling

Ø Deionized water temperature controlling

Ø Deionized water filtration

Ø Cooling by automatically

Ø Conductivity controlling automatically.

• Oxygen treatment

Ø Two stages separated

Ø Cooling

Ø Condensate water drained out automatically

Ø Hydrogen in oxygen testing and alarm in controlling cabinet

• Hydrogen treatment

Ø Two stages separated

Ø Cooling

Ø Condensate water drained out automatically

Ø Cathode gas backpressure adjustment

Ø Multi temperature testing and interlocking

Ø Multi pressure testing and interlocking

Ø High pressure release system.

• Nitrogen purge cathode and anode to clean the electrolyzer and pipe.

• The voltage for each cell is tested and monitored, alarm and protection once abnormal happens.

• Electrical control and safety protection

Ø Equipment and instruments monitoring and controlling in automatically.

Ø Fault alarm and safety protection in case of any abnormal situation.

Ø Data acquisition and recording

1.6. The hydrogen production Specification:

• Rated input power:2.5MW

• Hydrogen Production:500Nm³/h

• Power load range: 10~120%

• Hydrogen purity: 99.999%

• DEW point: ≤-65°C

• Working tempreture:65-80°C

• Hydrogen side pressure:1.6MPa(can reach 3Mpa,depend client request)

• Oxygen side pressure: Atmospheric pressure

• Rated cell voltage: ≤1.8V

• Active area:50000px²

• Rated load current density: 2A/cm2

• DC power consumption: ≤4.3 kWh/Nm³

• Comprehensive power consumption: ≤4.9 kWh/Nm3(see below calculation)

• Water quality requirements: ≤0.5 µS/cm

• System life:20 years

• Cooling respond: ≤5min

• Hot respond: ≤5S

1.7. The Other Features

• Based on HAZOP analysis, study the deviations during the test from the process parameters in the system, and use heuristic guiding words to analyze the root causes and hazard and solution of various faults, such as the changes of flow rate, temperature, and pressure.

• 4 levels of alarm and safety protection

Ø LL reminder (the computer reminds specific problem and start protection measures)

Ø L alarm (the computer alarms specific problems, equipment alarms)

Ø H alarm (the computer alarms specific problems, equipment alarms)

Ø HH (the computer alarms a specific problem, start the corresponding fail-safe measures

• The electrolysis stack design

Ø The PEM electrolysis stack is designed excellent performance with high current density, high hydrogen purity and quick responding, it has very great efficiency compare with ALK stacks.

Ø Good anticorrosion material, excellent sealing design and proton membrane provides safe, reliable and longer working life.

Ø Easy to maintain, it can be checked the fault by DCS controlling system in automatically, and also can be checked by manual as well.

Ø It has excellent power volatility resistance and quick responding, suitable for winding power and solar PV power, The loading range 10%-120%

• The anode pure water circulation is the key part of hydrogen production system, it achieves:

Ø Pure water supplies in automatically，

Ø Pure water flow is controllable,

Ø Pure water temperature is controllable,

Ø Conductivity is controllable,

• Control system

Ø Controller: SIMENS

Ø Internal communication mode:RS485/Ethernet

Ø Remote control interface: Ethernet

Ø Software integration: I/O and software integrated the power output switch is controllable by program.

Ø Hydrogen production can run automatically or by manual, the automatically mode allows unattended.

Ø Emergency switch is set make the system can be shut down in case of emergency.

• Hydrogen concentration in system safety linkage

Ø I level alarm

sound and light alarm for hydrogen concentration

Ventilation switches on

Hydrogen production load down and switch off.

Ø II level alarm

sound and light alarm for hydrogen concentration

Ventilation switches on

The hydrogen valve is closed

Ø III level alarm

Ventilation switches on

Hydrogen production emergence switches off

The hydrogen valve is closed

The power of testing shut off.

• Computer system

Ø CPU/RAM/HDD: Core i7 or above/16G RAM /256G SSD/500G HDD

Ø Motherboard Expansion Slots and I/O Ports: PCI /PCI-E /USB3.0*2

Ø Networking: Motherboard Integrated 10/100 Mbps Adaptive Network Card

Ø Operating System: Win10 64bit Professional

Ø Sampling Rate: ≥100ms, sampling rate is adjustable

Ø Interface form: Modular interface, architecture + curve + real-time data

Ø Data format: excel format (.csv)/text file (.txt)

1.8. Utilities requirement (be prepared by buyer)

• The utilities should be prepared by buyer, see below:

1.9. Supply Scope:

1.10 container content