【Ten Years of Great Progress in Chemical Technology】Three technological innovations, including 70MPa hydrogen refueling stations, from 2009 to 2023, have been included in the Central State-Owned Enterprises’ Technology Innovation Handbook

Development of Key Technical Equipment for 70MPa Hydrogen Refueling Stations 【Field】High-end Equipment 【Name of Central Enterprise】**Energy Investment Group Co., Ltd. 【Brief Description of the Achievement】In response to the needs of long-range, heavy-duty hydrogen-based transportation applications in China, and based on key equipment development projects initiated by the State-owned Assets Supervision and Administration Commission and the National Energy Administration, proprietary key technical equipment for 70Mpa hydrogen refueling stations featuring high capacity and low energy consumption has been developed. By overcoming the challenges related to the precise design of gas-liquid-solid coupling in compressors, as well as the development of key components capable of withstanding high temperatures and pressures in hydrogen-rich environments, along with advanced testing techniques for actual operating conditions, the first domestically developed 90MPa hydrogen diaphragm compressor was created. This compressor has a suction pressure of 12.5MPa and an exhaust pressure of 90MPa; its displacement is greater than 350 Nm3/h, with energy consumption of less than 2 kWh/kg ； Through innovations in variable-flow refueling and multi-stage compression technologies, the first set of 70MPa rapid hydrogen refueling units and 70MPa hydrogen station dynamic process control systems were developed. The maximum hydrogen refueling rate is 7.2 kg/min; passenger cars can be fully refueled in as fast as 3 minutes, buses in 5 minutes, and heavy trucks in 10 minutes. The refueling efficiency ranges from 95% to 100%, with energy savings of over 30% for bus and heavy truck refueling due to pre-cooling. The energy consumption of hydrogen stations is below 3.5 kWh/kg. It has completed third-party certification reviews and assessments by the State-owned Assets Supervision and Administration Commission; it has been demonstrated in 2 hydrogen refueling stations, and has taken the lead in formulating **3 industry standards and 2 group standards. 【Key Parameters】 1. Compressor inlet pressure: 5–20 MPa; Compressor inlet temperature: ≤40°C 2. Maximum compressor exhaust pressure: 90 MPa; Compressor exhaust temperature: ≤40°C 3. Compressor exhaust volume: 350 Nm3/h; Compression energy consumption: 1.95 kWh/kg 4. Hydrogenation pressure level: 70 MPa; Maximum hydrogenation flow rate: 7.2 kg/min 5. Hydrogenation time for passenger vehicles: 3 minutes ； Bus hydrogen refueling time: 5 min. Heavy truck hydrogen refueling time: 10 min ； Refueling rate: 95 – 100% 7. Pre-cooling temperature for passenger vehicle hydrogen refueling: -40℃ ； Pre-cooling temperature for buses and heavy trucks during hydrogenation: -20°C. 8. Energy consumption at hydrogen refueling stations: 3.5 kWh/kg. 【Needs for promotion】 1. Methods of promotion: sales, licensing, transfer, investment as part of a capital contribution, or collaborative implementation. 2. Areas for promotion: This product can be promoted in the hydrogen refueling station industry, as well as among companies involved in the construction and operation of such stations.

Images of metal bipolar plates for proton exchange membrane fuel cells 【Field of application】Key components 【Name of central enterprise】China Iron and Steel Research Institute Group Co., Ltd. 【Brief description of the achievement】Proton exchange membrane fuel cells (PEMFCs) are devices that convert the chemical energy in reactants directly into electrical energy; their energy conversion efficiency is not constrained by the Carnot cycle, with the power generation efficiency of such fuel cells reaching over 50%. As key components of fuel cells, bipolar plates serve to separate the reaction gases, distribute these gases to the electrode surfaces through flow patterns, collect and conduct electrical current, and support the membrane electrodes. They also undertake the functions of heat dissipation and drainage for the entire fuel cell system. Compared to graphite materials, composite graphite bipolar plates and metal bipolar plates have become the preferred materials for reducing the manufacturing costs of fuel cell electrodes, owing to their good processability, low cost, and higher energy density. 【Key Specifications】 (1) Power density: ≥2W/cm2 (2) Active area: ≤280cm2 (3) Thickness deviation after molding: ≤0.02mm 【Needs for Promotion】 (1) Methods of promotion: sales, collaborative implementation (2) Areas for application: suitable for use in new energy commercial vehicles, new energy passenger vehicles, special engineering vehicles, as well as electrical equipment used in outdoor operations and other industries.

Images of metal bipolar plates for proton exchange membrane fuel cells 【Field of application】Key components 【Name of central enterprise】China Iron and Steel Research Institute Group Co., Ltd. 【Brief description of the achievement】Proton exchange membrane fuel cells (PEMFCs) are devices that convert the chemical energy in reactants directly into electrical energy; their energy conversion efficiency is not constrained by the Carnot cycle, with the power generation efficiency of such fuel cells reaching over 50%. As key components of fuel cells, bipolar plates serve to separate the reaction gases, distribute these gases to the electrode surfaces through flow patterns, collect and conduct electrical current, and support the membrane electrodes. They also undertake the functions of heat dissipation and drainage for the entire fuel cell system. Compared to graphite materials, composite graphite bipolar plates and metal bipolar plates have become the preferred materials for reducing the manufacturing costs of fuel cell electrodes, owing to their good processability, low cost, and higher energy density. 【Key Specifications】 (1) Power density: ≥2W/cm2 (2) Active area: ≤280cm2 (3) Thickness deviation after molding: ≤0.02mm 【Needs for Promotion】 (1) Methods of promotion: sales, collaborative implementation (2) Areas for application: suitable for use in new energy commercial vehicles, new energy passenger vehicles, special engineering vehicles, as well as electrical equipment used in outdoor operations and other industries.

Ten years of rapid development in chemical engineering equipment – praising the prosperous and strong China of today

【Ten Years of Great Progress in Chemical Technology】The world’s first aromatic-type mobile-bed light naphtha aromatization unit was successfully commissioned between 2009 and 2020. https://bbs.hcbbs.com/thread-3904414-1-1.html (Source: Huahai Chuanliu – Haichuan Network)