Specification of water electrolyte system for producing hydrogen
1 Scope
This standard specifies the terms and definitions, classification and designation, technical requirements, test and inspection, marking and packaging of hydrogen production systems for producing hydrogen and oxygen by water electrolysis.
This standard is applicable to stationary and mobile water electrolyte system for producing hydrogen for industrial and commercial use.
This standard is applicable to filter-press type water electrolyte devices for producing hydrogen, including alkaline water electrolysis and solid polymer electrolyte water electrolysis.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the document referred to applies.
GB 150 Steel pressure vessels
GB 151 Tubular heat exchangers
GB/T 191 Packaging - Pictorial marking for handling of goods (eqv ISO 780)
GB/T 629 Chemical reagent - Sodium hydroxide (eqv ISO 6353-2)
GB/T 1972 Disc spring
GB/T 2306 Chemical reagent - Potassium hydroxide (neq ISO 6353-2)
GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (apply to inspection of process stability)
GB/T 3634 Industrial hydrogen
GB/T 3863 Industrial oxygen
GB/T 3985 Compressed asbestos fibre jointing
GB/T 4237 Hot rolled stainless steel sheets and plates
GB/T 4830 Industrial process measurement and control instruments - Pressure range and quality of air supply
GB 4962 Technical safety regulation for gaseous hydrogen use
GB 5099 Seamless steel gas cylinders ( neq ISO 4705)
GB/T 5831 Determination of trace oxygen in the gases - Colorimetric method
GB/T 5832.1 Determination of moisture in gases - Part 1: Electrolytic method
GB/T 5832.2 Determination of moisture in gases - Part 2: Dew point method
GB/T 6285 Determination of trace oxygen in gases - Electrochemical method
GB 6654 Steel plates for pressure vessels
GB/T 7445 Pure hydrogen, high purity hydrogen and ultra pure hydrogen
GB/T 8163 Seamless steel pipes for liquid service (neq ISO 559)
GB/T 8175 Guide for design of thermal insulation of equipments and pipes
GB/T 8984.1 Determination of carbon monoxide, carbon dioxide and hydrocarbon in the gases - Part 1: Determination of carbon monoxide, carbon dioxide and mathane in the gases - Gas chromatographic method
GB/T 8984.2 Determination of carbon monoxide, carbon dioxide and hydrocarbon in the gases - Part 2:Determination of total content of carbon monoxide, carbon dioxide and hydrocarbon in gases - Gas chromatographic method
GB/T 11352 Carbon steel castings for general engineering purpose (neq ISO 3755)
GB/T 12241 Safety valves - General requirements (eqv ISO 4126)
GB 12337 Steel spherical tanks
GB 12358 Gas monitors and alarms for workplace - General technical requirements
GB/T 13306 Plates
GB 13347 The quenching ability of flame arrester and its test method for petroleum gas piping systems
GB/T 13384 General specifications for packing of mechanical and electrical product
GB 14194 Rules for filling of permanent gas cylinders
GB/T 14599 High purity oxygen
GB/T 14975 Seamless stainless steel tubes for structure
GB 16808 Technical requirements and test methods for combustibic gas alarm control units (neq ISO/TC 21/SC 3)
GB 50030 Code for design of oxygen station
GB 50057 Code for design protection of structures against lightning
GB 50058 Specifications for the design of electric systems in places with explosion and fire
GB 50177 Design code for hydrogen station
GB 50235 Code for construction and acceptance of industrial metallic piping
GB 50236 Code for construction and acceptance of field equipment, industrial pipe welding engineering
GB 50275 Code for construction and acceptance of computer, fan and pump installation engineering
GB 50316 Design code for industrial metallic piping
JB 2111 Test method for bond strength of metallic coatings
JB 2112 Test method for porosity of metal coatings - Wet filter paper placement method
JB 2115 Test method for metallic coatings - Timing fluid flow method
JB 2536 Pressure vessel painting, packaging and transportation
JB 3836 Electrical apparatus for explosive gas atmospheres
HGJ 202 Code for construction and acceptance of degreasing project
TC 211
Asbestos cloth for insulation
Supervision regulation on safety for gas cylinder
Supervision regulation on safety technology for pressure vessel
3 Terms and definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
normal conditioncal
gas conditions at a temperature of 0°C and a pressure of 101.3 kPa
3.2
diaphragm
membrane which divides the electrolytic cell of the water electrolyzer into a cathode area and an anode area, and separates the produced hydrogen and oxygen to prevent the hydrogen and oxygen from penetrating each other, but allows ions to migrate
3.3
lower explosive limit
minimum concentration of flammable and explosive gases, vapors or dusts in air/ oxygen to form an explosive gas mixture
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
5 Technical requirements
5.1 Water electrolyte system for producing hydrogen
5.2 Single equipment
5.3 Piping and accessories
5.4 Electrical devices and wiring
5.5 Automatic control and monitoring
5.6 Installation and assembly
6 Test and inspection
7 Marking
8 Product accompanying documents
9 Packaging
Annex A (Normative) Calculating gas output using current testing values
Annex B (Normative) Testing of gas output by volumetric method
Annex C (Normative) Testing of gas purity with analytical instruments
Table 1 Equipment quality grade and DC electricity consumption per unit of hydrogen output
Table 2 Raw water quality
Table 3 Quality requirements for the electrolyte
Table 4 Requirements for quality of circulating cooling water
