Research On Systematic Assessment Of Hydrogen Production Technology

Hydrogen energy has advantages of ample resource, utilization without polluting, extensive and convenient using mode, combustion value with high grade and etc. So, developing hydrogen energy becomes one of energy strategies to alleviate the pressure on energy supply, guarantee energy security and advance the environmental protection. A primary problem in hydrogen energy's large-scale commercial application is how to produce cheap hydrogen efficiently. On account of the diversity and overall development without uniformity in hydrogen production technology, it is particularly important how to systematically assess these technologies for selecting efficient technology of hydrogen production.Based on the in-depth analysis of these technologies' traits and applying theories of systematic assessment, this paper built a model suitable for systematic assessment of hydrogen production technology. In this study, assessment indicator system through test method of single correlation coefficient was designed; for quantifying the indicator value, simple and new evaluation functions were constructed, proxy indicators were selected, improved fuzzy comprehensive evaluation method was used; combining the linear weighted model with mixed weighted model was applied to indicators' comprehensive weighted summing.This paper emphasizes on three hydrogen production technology with different features from natural gas steam reforming, coal gasification and electrolysis. Although coal gasification method has the merit of ample and cheap resource, electrolysis method has the merit of clean production and hydrogen's high purity, yet natural gas steam reforming method has the highest comprehensive benefit value. With the systematic assessment model of hydrogen production technology, the result can be obtained by systematically evaluating from technology, economy, environment and society. Accordingly, developing natural gas steam reforming method should be a prior consideration. Further, the model can also be extended to the systematic assessment of other hydrogen production technologies.