考虑减排CO_2的几种大规模制氢系统技术经济分析(下)

TECHNICAL AND ECONOMICAL ANALYSIS OF SEVERAL LARGE-SCALE HYDROGEN-PRODUCING SYSTEMS OF MITIGATING CO_2 DISCHARGE (2)

面对由温室效应导致的日益严重的全球气候灾难 ,二氧化碳减排已经刻不容缓。氢气作为理想的清洁能源 ,在应用环节可以实现零排放。然而要实现全生命周期的CO2 减排 ,必须考虑在用化石燃料制氢环节中回收并处理CO2 。考察了几种目前常用的大规模制氢方法———天然气蒸汽重整 (SMR)、自热重整 (ATR)、部分氧化和煤气化制氢的工艺流程 ,用AspenPlusTM对这几种制氢工艺流程进行模拟仿真 ,并进行了能量和经济性分析。指出对中国减排CO2 而言 ,煤气化激冷 -高温净化方案是最经济可行的 ,并可进一步发展为以煤气化为核心的多联产系统 ,对我国的可持续发展具有重要意义。

It is very urgent to mitigate CO 2 discharge with the more and more global climate disasters resulted from green house effect. Zero emissions could be reached in application sector in the case of taking hydrogen as the ideal clean energy resources. However, CO 2 must be recovered in the sector of hydrogen-producing from fossil fuels to realize the life cycle CO 2 mitigation. In this paper, several technological processes of hydrogen-producing are simulated with Aspen Plus TM , and theirs energy and economics were analysed after investigating the technological processes of large scale hydrogen-producing methods such as steam methane reforming(SMR), auto-thermal reforming(ATR), partial oxidation and cool gasification in common use at present. It is pointed out that the configuration of coal gasification with quenching and hot gas feasibility, and could be further expanded into poly-generation systems based on coal gasification, which is very significant for China′s sustainable development.