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Optimized Flow Sheet for a Reference Commercial-Scale Nuclear-Driven High-Temperature Electrolysis Hydrogen Production Plant
| 题名： | Optimized Flow Sheet for a Reference Commercial-Scale Nuclear-Driven High-Temperature Electrolysis Hydrogen Production Plant |
| 作者： | J. S. Herring;E. A. Harvego;J. E. O'Brien;M. G. McKellar; |
| 关键词： | high temperature electrolysis; Hydrogen; Nuclear ; Reference flow sheet08 HYDROGEN; ANODES; BOUNDARY CONDITIONS; COMPRESSORS; CURRENT DENSITY; ECONOMICS; EFFICIENCY; ELECTROLYSIS; FLOWSHEETS; HEATING; HELIUM COOLED REACTORS; HYDROGEN; HYDROGEN PRODUCTION; INTERSTITIAL HYDROGEN GENERATION; OPTIMIZATION; OXYGEN; PRODUCTION |
| 摘要： | This report presents results from the development and optimization of a reference commercialscale high-temperature electrolysis (HTE) plant for hydrogen production. The reference plant design is driven by a high-temperature helium-cooled reactor coupled to a direct Brayton power cycle. The reference design reactor power is 600 MWt, with a primary system pressure of 7.0 MPa, and reactor inlet and outlet fluid temperatures of 540掳 C and 900掳C, respectively. The electrolysis unit used to produce hydrogen consists of 4.176 脳 10 6 cells with a per-cell active area of 225 cm2. A nominal cell area-specific resistance, ASR, value of 0.4 Ohm鈥m2 with a current density of 0.25 A/cm2 was used, and isothermal boundary conditions were assumed. The optimized design for the reference hydrogen production plant operates at a system pressure of 5.0 MPa, and utilizes an air-sweep system to remove the excess oxygen that is evolved on the anode side of the electrolyzer. The inlet air for the air-sweep system is compressed to the system operating pressure of 5.0 MPa in a four-stage compressor with intercooling. The overall system thermal-to-hydrogen production efficiency (based on the low heating value of the produced hydrogen) is 49.07%at a hydrogen production rate of 2.45 kg/s with the high-temperature helium-cooled reactor concept. The information presented in this report is intended to establish an optimized design for the reference nuclear-driven HTE hydrogen production plant so that parameters can be compared with other hydrogen production methods and power cycles to evaluate relative performance characteristics and plant economics. |
| 报告类型： | 科技报告 |
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