GB/T 19774-2005 English PDF (GBT19774-2005)

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GB/T 19774-2005: Specification of water electrolyte system for producing hydrogen
GB/T 19774-2005
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.180
F 19
Specification of water electrolyte system for producing
hydrogen
ISSUED ON: MAY 25, 2005
IMPLEMENTED ON: NOVEMBER 01, 2005
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions... 7 
4 Classification and naming ... 8 
5 Technical requirements ... 9 
6 Test detection ... 24 
7 Signs ... 28 
8 Accompanying files of products ... 30 
9 Packaging ... 32 
Appendix A (Normative) Calculation of gas output by current test value ... 33 
Appendix B (Normative) Test of gas output through volumetric method ... 34 
Appendix C (Normative) Test of gas purity by analytical instruments ... 36 
Specification of water electrolyte system for producing
hydrogen
1 Scope
This standard specifies the terms and definitions, classification and nomenclature,
technical requirements, testing and detection, marking, packaging of hydrogen
production systems for hydrogen and oxygen production, through water electrolysis.
This standard applies to industrial and commercial stationary and mobile water
electrolysis hydrogen production systems.
This standard applies to filter-press type water electrolysis hydrogen production devices,
including alkaline water electrolysis and solid polymer electrolyte water electrolysis.
2 Normative references
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For the dated references, the subsequent amendments
(excluding corrections) or revisions do not apply to this Standard; however, parties who
reach an agreement based on this Standard are encouraged to study if the latest versions
of these documents are applicable. For undated references, the latest edition of the
referenced document 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 Asbestos-rubber sheets
GB/T 4237 Hot rolled stainless steel sheets and plates
GB/T 4830 Pressure range and quality of air supply for the industrial process
measurement and control instruments
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 trace water in the gases - 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 tubes 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
methane 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 purposes (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 atmosphere general technical
requirements
GB/T 13306 Plates
GB 13347 The quenching ability of fire arrester and its test method for petroleum
5.2.1.3.5 The chemical composition and structural form of the selected materials shall
not cause stress corrosion, cracking or oxygen corrosion, during operation.
5.2.1.4 For the setting of the protective cover or shell of the mobile water electrolysis
hydrogen production system, it shall meet the following requirements:
5.2.1.4.1 When in direct or indirect exposure to humid gas may affect the technical
performance or use function of single equipment or components, it shall take protective
measures OR select moisture-proof materials.
5.2.1.4.2 The protective cover or shell shall be made of non-combustible material. The
minimum thickness should be 0.6 mm. Generally, galvanized steel sheet can be used.
For the protective cover with a larger area, it takes strengthening measures or double-
layer structure, according to the requirements of strength or rigidity.
5.2.1.4.3 When the protective cover or shell needs to be provided with an insulating
layer, it shall be designed in accordance with GB/T 8175. The insulating material shall
be non-combustible material; meanwhile measures shall be provided, to prevent the
material from flying and scattering.
5.2.1.4.4 The inner surface of the protective cover or shell must be flat and free of
hydrogen accumulation space; an exhaust port shall be provided at the highest point on
the top. If there are two or more tops with the highest point, an exhaust port shall be
provided, at each highest point.
5.2.1.4.5 There shall be a hydrogen concentration alarm device in the protective cover
or shell, which shall be interlocked with the exhaust fan or the purging gas exchange
shut-off valve.
5.2.1.4.6 Inspection ports and maintenance ports shall be set up in the protective cover
or shell, at a position convenient for inspection and maintenance; the number and size
of them shall be determined, according to the inspection and maintenance targets or
functions. Inspection openings and maintenance openings shall be provided with view
windows or cover plates.
5.2.2 Electrolyzer
5.2.2.1 The water electrolyzer is the main equipment of the water electrolysis hydrogen
production system. Its performance parameters will determine the technical
performance of water electrolysis hydrogen production.
The performance parameters and structure of the water electrolyzer shall be based on
basic requirements for reducing the power consumption per unit hydrogen, reducing
the manufacturing cost, prolonging the service life. The structural type of the water
electrolyzer, the electrolytic cell and its electrodes, the structure, coating, material of
the diaphragm shall be selected reasonably.
5.2.2.2 The hydrogen production capacity, purity, impurity content of the water
electrolyzer shall be negotiated, according to the manufacturer's enterprise standard and
the user's requirements.
5.2.2.3 The electrode material and coating of the electrolytic cell shall be determined,
according to the design of the tank body AND the general requirements of the water
electrolysis hydrogen production system.
5.2.2.4 Diaphragm material of diaphragm asbestos cloth shall meet the requirements of
TC 211. It shall be determined, according to the technical requirements of tank design
and supply conditions.
5.2.2.5 The selection of the sealing gasket shall ensure that the water ...