ABSTRACT

Thermodynamic analysis and optimization for the steam methane reforming (SMR) hydrogen production system using the high temperature gas-cooled reactor pebble-bed module power plant (HTR-PM) are investigated in this work. Based on the thermodynamic-equilibrium model, parameters of thermal efficiency (η), hydrogen production (Y_H2/methane), methane conversion rate (X₁) and carbon monoxide conversion rate (X₂) are calculated under the specified temperature (T), pressure (P) and water-to-carbon ratio (S). The influence of S, T, P on η, Y_H2/methane, X₁ and X₂ is then analyzed. It considers a wide range of operating conditions (T = 400–1200°C; P = 2–7 MPa and S = 2–10). The results show that the influence of on the system performance is significant. When T > 950°C, η and Y_H2/methane increases slowly (4 < S ≤ 6) or reduces (S > 6). For the operating conditions of HTR-PM (P = 7 MPa; S = 6 and T = 950°C), the maximum value of η is 63.44% and the maximum Y_H2/methane is 3.3 mol. At last, system optimized parameters are illustrated.

摘要

本文研究了使用高温气冷堆球床模块发电厂 (HTR-PM) 的蒸汽甲烷重整 (SMR) 制氢系统的热力学分析和优化。基于热力学平衡模型，计算了指定温度（T）下的热效率（η）、制氢量（Y _H2/methane）、甲烷转化率（X ₁）和一氧化碳转化率（X ₂）的参数、压力 ( P ) 和水碳比 ( S )。的影响S，T，P上η，Y _{H2 /甲烷}，然后分析X ₁和X ₂。它考虑了广泛的操作条件（T = 400–1200°C；P = 2–7 MPa 和S = 2–10）。结果表明， 对系统性能的影响是显着的。当T > 950°C 时，η和Y _H2/methane缓慢增加（4 <  S ≤ 6）或减少（S > 6）。对于 HTR-PM 的运行条件（P = 7 MPa；S = 6 和T = 950°C），η的最大值为 63.44%，Y _H2/methane的最大值为是 3.3 摩尔。最后说明了系统优化参数。