Hydrogen Generation System

(HGS)

HGS system is comprised of Alkaline Water Electrolysis(AWE) electrolysers,Gas-Liquid Separators,
Purifcation Systems and Auxiliary Units. The capacity of a Single Stack system is up to 1000 NM3H (5MW).

Electrolysis Stack
GFEL-XXX/1.6(3.2)

The electrolysis stack operates at the pressure of 1.6 or 3.2 MPa. The alkaline electrolysis stack is featured by large hydrogen production volume, high hydrogen purity, long service life, reliable operation and low requirements for operation and maintenance.

Main Features

Optimized electrode structure & nickel-plating process, leading to higher performance.

New material and technology diaphragm with higher current density and environment sustainable.

Optimized gasket and frame sealing of bipolar plate design with longer lifespan.

Optimized gas-liquid flow field with higher flow equalization efficiency.

Compact structure of lye cooling with high heat exchange efficiency.

Technical Parameters

Item	Unit	GFEL-200/1.6(3.2)	GFEL-500/1.6	GFEL-1000/1.6
Hydrogen production	Nm3/h	200	500	1000
Operationg pressure	MPa	1.6(3.2)	1.6	1.6
Operating temperature	℃	85~92	85~92	85~92
Rated current	A(DC)	3500	7000	14000
DC Power consumption(BOL)	KWh/(Nm3H2)	4.0~4.3	4.1~4.4	4.1~4.4
DI Water consumption	L/h	≤180	≤450	≤900
KOH electrolyte concentrations	wt%	30	30	30
Structural type of electrolyzer	-	Bipolar press filter	Bipolar press filter	Bipolar press filter
Polar plate	-	Carbon steel nickel plating	Carbon steel nickel plating	Carbon steel nickel plating
Anode/cathode material	-	nickel	nickel	nickel
Diaphragm material	-	PPS(asbestos free)	PPS(asbestos free)	PPS(asbestos free)
Electrolyzer weight	KG	14700	35200	50000
Dimensions of electrolyzer	mm	320016491639	420024402555	690024402355

Gas Separation System
GFGL-XXX/1.6

Hydrogen and oxygen flow out of the electrolyser through their respective convergence channels together with the lye and enter the gas separator. Due to gravity, the hydrogen (oxygen) and lye are settled and separated.The separated hydrogen (oxygen) comes out of the upper part of the separator and enters the hydrogen (oxygen) heat exchanger where it is cooled. Liquid droplets are removed from the top of the separator through the hydrogen washing separator. The hydrogen is then controlled by a hydrogen regulating valve and sent downstream.

Technical Parameters

Item	Unit	GFGL-200/1.6(3.2)	GFGL-500/1.6	GFGL-1000/1.6
Hydrogen treatment capacity	Nm3/h	200	500	1000
Purity of hydrogen at the outlet	%	≥99.8	≥99.8	≥99.8
Purity of oxygen at the outlet	%	≥98.5	≥98.5	≥98.5
Temperature of hydrogen at the outlet	℃	<40	<40	<40
Dimensions of Gas-liquid separation skid	mm	300027003800	540032003950	480036005800
Weight of Gas-liquid separation skid	KG	8000	11000	20000

Hydrogen Purification System
GFPD-XXX/1.6

The hydrogen generated by water electrolysis contains oxygen impurity, and a small amount of saturated water. Oxygen and hydrogen react rapidly to generate water through catalyst reaction in a de-aerator and a molecular sieve in the dryer is used to absorb the water contained in hydrogen.The oxygen content after purification is less than or equal to 5 ppm and the purity of hydrogen reaches 99.999%.

Technical Parameters

Item	Unit	GFPD-200/1.6	GFPD-500/1.6	GFPD-1000/1.6
Hydrogen treatment capacity	Nm3/h	200	500	1000
Purity of hydrogen	%	≥99.999	≥99.999	≥99.999
Dew point of hydrogen	℃	≤-70	≤-70	≤-70
Temperature of hydrogen	℃	≤40	≤40	≤40
Oxygen content in product	ppm	≤5	≤5	≤5
Dimensions of Purification Skid	mm	400022002500	440023503300	560030003500
Weight of Purification Skid	KG	6000	9000	15000

HGS Project Reference

50 Nm3/h AWE System

Location: UAE

Capacity: 50 Nm3 per hour

Pressure: 16 bar

This is GF's containerized integrated AWE solution for UAE customer who is eager to pilot the energy transition, it is under commissioning now with features of significantly reduced on-site manhours.

1000 Nm3/h AWE System

Location: Jiangsu,China

Capacity: 1000 Nm3 per hour

Pressure: 16 bar

This project is one of the first AWE system in Jiangsu province, the green hydrogen is used by industrial end user in chemical industry and has already been in operation for more than 1 year. The entire system including BOP is supplied by GF.

50 Nm3/h AWE System

Location: Zhejiang,China

Capacity: 50 Nm3 per hour

Pressure: 16 bar

This is GF's first containerized all-in-one integrated AWE solution for green hydrogen generation, which features easier depolyment, erection and commission.