Small-Scale Ammonia Production from Biomass: A Techno-Enviro-Economic Perspective

详细信息    查看全文

• 作者：Pratham Arora ; Andrew F.A. Hoadley ; Sanjay M. Mahajani ; Anuradda Ganesh
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：June 8, 2016
• 年：2016
• 卷：55
• 期：22
• 页码：6422-6434
• 全文大小：625K
• 年卷期：0
• ISSN：1520-5045

文摘

Ammonia production has traditionally been based on large-scale plants. The thrust toward large-scale production to gain economic advantages has overshadowed the benefits that could be derived from small-scale production plants. Additionally, the ammonia industry consumes a major chunk of global fossil fuels, which also burdens the planet with greenhouse gases. To effectively counter these issues, this study investigates the production of ammonia from biomass. Processes based on biomass plants are usually small-scale and are limited by biomass supply. To ensure sustainable ammonia production, this study tries to highlight the techno-economic advantages that result from small-scale ammonia plants based on biomass feedstock. This paper proposes a new process that takes inputs from a relatively old, natural gas based process (leading concept ammonia) specifically designed for small-scale ammonia manufacture and couples it with a recently developed dual fluidized bed technology for biomass feedstock. Two different flowsheet configurations are simulated rigorously and compared to gain a better understanding of the process. The flowsheets are optimized, and energy integration is performed to provide a wider insight. The life cycle assessment calculations that are carried out using ASPEN Plus simulation results and ecoinvent databases predict a CO₂ emissions reduction of 54–68% when compared to conventional ammonia plants.