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GB/T 19774-2005: Specification of water electrolyte system for producing hydrogen Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 19774-2005: Specification of water electrolyte system for producing hydrogen---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT19774-2005NATIONAL 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 ContentsForeword... 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... 36ForewordAppendix A, Appendix B, Appendix C of this standard are normative appendixes. This standard was proposed by AND shall be under the jurisdiction the National Energy Foundation and Management Standardization Technical Committee (SAC/TC 20). Responsible drafting organizations of this standard. China National Institute of Standardization, China Electronics Engineering Design Institute, Institute of Nuclear and New Energy Technology of Tsinghua University. Participated drafting organizations of this standard. CSIC 718 Research Institute, Tianjin Continental Hydrogen Production Equipment Co., Ltd., Suzhou Jingli Hydrogen Production Equipment Co., Ltd., Harbin Environmental Protection Hydrogen Production Co., Ltd. The main drafters of this standard. Chen Linxin, Jia Tieying, Mao Zongqiang, Zhang Guanghu, Xie Xiaofeng, Xu Junming, Zhou Zhenfang, Zhang Xiangchun, Zhao Xixiang. This standard was published for the first time. Specification of water electrolyte system for producing hydrogen1 ScopeThis 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 referencesThe 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)3 Terms and definitionsThe following terms and definitions apply to this standard. 3.1 Normal condition The gas condition, that the temperature is 0 °C and the pressure is 101.3 kPa. 3.2 Diaphragm The electrolytic cell of the water electrolyzer is divided into a cathode area and an anode area, the generated hydrogen and oxygen are separated, to prevent the hydrogen and oxygen from penetrating each other, but the ions can migrate. 3.3 Lower explosive limit The minimum concentration of an explosive gas mixture, which is formed by the flammable and explosive gas, vapor or dust, in air/oxygen. 3.4 Upper explosive limit The maximum concentration of an explosive gas mixture, which is formed by the flammable and explosive gas, vapor or dust, in air/oxygen. 3.5 Fire arrester The function of the fire arrester is to prevent the external flame from breaking into the equipment and pipelines, which contain flammable and explosive gases, OR to prevent the flame from spreading between the equipment and pipelines. The fire arrester is designed and manufactured on the principle that, when the flame passes through the narrow pores of the thermal conductor, it is extinguished due to heat loss. workshop. If it is installed and used outdoors, it shall be provided with protection facilities, to prevent s4 Classification and naming4.1 Classification The products of the water electrolysis hydrogen production system are divided into ordinary type and pure gas type, according to the purity. Their purity range is stipulated as follows. 4.2 Product naming The product name of the water electrolysis hydrogen production system shall consist of uppercase Chinese pinyin letters and Arabic numerals.5 Technical requirements5.1 Water electrolysis hydrogen production system 5.1.1 General requirements 5.1.3 Working conditions 5.1.3.1 The working pressure (p) of the water electrolysis hydrogen production system is divided into three categories. Normal pressure, low pressure, medium pressure. Their pressure ranges are specified as follows. 5.1.3.6 When caustic alkaline aqueous solution is used in the water electrolysis hydrogen production system, the potassium hydroxide or sodium hydroxide used shall comply with the provisions of GB/T 2306 and GB/T 629. 5.2 Single equipment 5.2.1 General requirements 5.2.1.1 For the water electrolysis hydrogen production system, different single equipment shall be reasonably configured, according to the different requirements of scale of the water electrolysis hydrogen production system, the characteristics of hydrogen used, the hydrogen quality. 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. 5.2.7 Pressure regulator/valve 5.2.7.1 The pressure regulator/valve is used for the pressure balance of the hydrogen side and the oxygen side, at the water electrolyzer outlet, OR the pressure regulation of the hydrogen/oxygen, which is supplied outside the water electrolysis hydrogen production system. 5.2.8 Hydrogen cut-off valve/shut-off valve 5.2.8.1 According to the requirements of air flow cut-off, analysis, test, blow-off replacement, in the production process of the water electrolysis hydrogen production system, a cut-off valve/shut-off valve shall be set at the relevant position. 5.2.9 Fire arrester 5.2.9.1 A fire arrester shall be installed, in front of the hydrogen exhaust port of the water electrolysis hydrogen production system, to prevent the return of external fire sources, such as lightning strikes, AND cause the hydrogen to catch fire. 5.3 Pipelines and accessories 5.3.1 Material selection The material selection of the pipelines and accessories of the water electrolysis hydrogen production system shall comply with the provisions of GB 50177, GB 50316, GB 50235. 5.3.2 Arrangement of pipelines and accessories 5.3.2.1 Meet the requirements of the process flow diagram of the water electrolysis hydrogen production system, which has control points. 5.3.2.2 It shall be convenient for operation, installation, maintenance.6 Test detection6.1 Test 6.1.1 Preparation before the test 6.1.2 Test method 6.1.2.1 Air tightness test, carry out the air tightness test on the pressure type water electrolysis hydrogen production system, by the use of clean air or nitrogen. The air tightness test pressure is the design pressure. After the test starts, the pressure is gradually increased. 6.1.2.3 Hydrogen compressors, pumps and other movement equipment shall be subject to test run, under load according to relevant standards. 6.1.2.4 For pressure vessels such as pressure-type hydrogen tanks, welding quality inspection and strength test shall be carried out, in accordance with the "Regulations on safety technical supervision of pressure vessel" and design drawings; a certificate shall be issued by a qualified testing department. 6.1.2.5 Shell ventilation test 6.2 Detection 6.2.1 Preparation before detection 6.2.1.1 The hydrogen pipeline of the water electrolysis hydrogen production system shall be subject to purging-replacement; the oxygen content in the system shall be less than 0.5%, after purging-replacement. 6.2.1.2 The raw material water, electrolyte, power supply, automatic control system of the whole system shall meet the design requirements and reach the conditions for start- up. 6.2.2 Detection of performance parameter 6.2.2.1 Detection of hydrogen output 6.2.2.1.1 Hydrogen output detection methods of water electrolysis hydrogen production system include volume method and DC current test value calculation method. This standard recommends using the DC current test value calculation method. 6.2.2.1.2 See Appendix A, for the calculation of the DC current test value; see Appendix B, for the volume method. 6.2.2.2 Detection of hydrogen/oxygen purity 6.2.2.3 Detection of DC voltage and current 6.2.2.3.1 The total DC current (cell current) of the water electrolyzer is detected by a DC ammeter. The accuracy level of the ammeter is not less than level 0.5. 6.2.2.4 Electric consumption per unit of hydrogen production 6.2.3 Detection requirements 6.2.3.1 The items, requirements and qualification criteria to be detected at the user's site shall be clearly specified in the supply contract AND used as the basis for equipment acceptance. 6.2.3.2 The manufacturer shall provide the equipment users with the following detection records, data, reports. 6.2.3.3 The detection instruments, meters, all related materials shall comply with the relevant standards or the provisions of the contract. The detection instruments and meters shall be within the valid certification time limit.7 Signs7.1 General requirements 7.1.1 The marking and installation location of the water electrolysis hydrogen production system and its single equipment shall comply with the provisions of GB/T 13306. 7.2 Contents of signboards 7.2.1 The signboard of the mobile water electrolysis hydrogen production system shall include the following contents. 7.2.1.1 The name and address of the manufacturer. 7.2.1.2 The product model and trademark. 7.2.1.3 The date of manufacture and serial number. 7.2.1.4 Main technical parameters. 7.2.2 The signboard of the water electrolyzer shall include the following contents. 7.2.2.1 The name and address of the manufacturer. 7.3 Illustration of packing box The pictorial signs for storage and transportation of the packing box shall comply with the provisions of GB/T 191.8 Accompanying files of products Handling and hoisting requirementsThe manufacturer shall provide instructions on the safe handling and hoisting of various single equipment and components of the water electrolysis hydrogen production system; if necessary, illustrate hoisting and handling methods with diagrams. 8.2 System and equipment drawings 8.2.1 The manufacturer shall provide various system processes, equipment structure, electrical automatic control drawings, which are required for the installation, operation, maintenance of the water electrolysis hydrogen production system. 8.3 User manual 8.3.1 The manufacturer shall provide instructional requirements or instructions for start- up and shutdown procedures. 8.3.2 Tips for safe use instructions shall generally include the following contents. 8.3.2.1 Reminders about explosion-proof, leak-proof, safe operation in the environment of hydrogen production. 8.3.2.2 Electrolyte preparation, anti-leakage, safety protection measures. 8.4 Installation and maintenance manual 8.4.1 The manufacturer shall provide requirements and guidelines for installation and maintenance. It includes that the site layout and design of the water electrolysis hydrogen production system must follow the provisions of GB 50177; the use of hydrogen must follow the provisions of GB 4962. 8.4.2 The installation and maintenance manual shall mainly include the following contents.9 Packaging9.1 The packaging of the water electrolysis hydrogen production system shall comply with the provisions of GB/T 13384.It shall be packed, according to the number, item name, number of pieces, on the packing list. 9.2 The packaging and transportation of pressure vessels shall comply with the provisions of JB 2536. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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