Techno-economic evaluation and prospects of integrated green hydrogen,ammonia synthesis and coal co-firing technology
NI Ruiyan
ZHANG Qi
JIAO Jie
HAO Shaojie
MA Zhenyu
Abstract：Accelerating the development of renewable energy and the low-carbon transformation of coal power is crucial for building a clean,low-carbon,safe,and efficient new power system.However,the rapid expansion of renewable energy installations in China has introduced challenges in terms of power consumption,system stability,and economic viability.In this context,co-firing green hydrogen-derived ammonia with coal presents a promising technological pathway to address both renewable energy utilization and coal power's low-carbon transformation.Nonetheless,the techno-economic feasibility of this integrated approach remains unclear due to the complexity of the industrial chain,the numerous economic parameters involved,and uncertainties in policy support.Therefore,this study clarifies the integrated technological process of green hydrogen production,ammonia synthesis,and coal co-firing.It conducts a techno-economic evaluation of typical projects,while performing sensitivity analyses on key factors such as green hydrogen costs and carbon pricing,and providing insights into their prospects.The findings indicate:① Under current conditions,the integrated project incurs significant losses,with green hydrogen production costs at 33.78 CNY/kg,primarily driven by green electricity costs(53.76％)and equipment costs(30.38％);② An increase in co-firing ratio results in a deterioration of economic viability,although higher carbon prices can alleviate this issue.When the carbon price exceeds 2300 CNY/ton,the economic performance of a 30％co-firing project surpasses that of a 10％co-firing project.③ The cost of green hydrogen is a decisive factor in determining the project's economic feasibility.Should the carbon price rise to 750 CNY/ton,the green hydrogen costs required for profitability in 10％,20％,and 30％co-firing projects are 22.45,16.44,and 14.40 CNY/kg respectively.Consequently,while the project is currently economically unviable,technological advancements and rising carbon prices are expected to substantially improve the cost-effectiveness of green ammonia-coal co-firing projects,thereby facilitating their broader implementation.
Keywords：green hydrogengreen ammoniacoal-power ammonia blendingintegrated technologytechno-economic evaluationeconomic boundaries
Publication Date：2025-01-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 177-188 )