Affiliation:
1. Clean Energy and Fuel Lab, School of Engineering and Technology, Central Michigan University, Mount Pleasant, MI 48859
Abstract
Abstract
A torrefaction process operating on oxyfuel combustion concept is introduced. The working fluid employed in the process is carbon dioxide captured from the combustion products. The thermodynamic modeling of the process is carried out to determine the energy requirement, recycled CO2 flow rate, energy yield, and CO2 production rate at various torrefaction conditions. The total capital investment and production costs of the new system are also estimated. By increasing the torrefaction severity, the CO2 production rate, recycled gas mass, and the process thermal energy requirement increase, whereas the grinding energy and the energy yield decrease. A comparison made between the performance and economic parameters of the new and a conventional torrefaction processes shows that the proposed process is expected to produce torrefied wood pellet of compatible fuel quality and overall efficiency while eliminating CO2 and NOx emissions at the expense of 11.5% and 9% increase in the capital and production costs, respectively. The proposed torrefaction process requires 91.8 M$ capital investment and 113.2 $ to produce 1 ton of torrefied wood pellets with 91% energy yield and 88% overall plant efficiency. Sensitivity analysis shows that the reactor type and raw biomass costs have significant impact on cost structures.
Funder
Central Michigan University
Subject
Geochemistry and Petrology,Mechanical Engineering,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment
Reference41 articles.
1. Predictive Modeling Techniques to Forecast Energy Demand in the United States: A Focus on Economic and Demographic Factors;Deka;ASME J. Energy Resour. Technol.,2015
2. Modeling Woody Biomass Torrefaction Process;Hasan,2018
3. Pyrolytic Conversion of Biomass Residues to Gaseous Fuels for Electricity Generation;Davies;ASME J. Energy Resour. Technol.,2013
4. Process Modeling of a Biomass Torrefaction Plant;Haseli;Energy Fuels,2018
5. Haseli, Y.
, 2019, “Methods for Biomass Torrefaction With Carbon Dioxide Capture,” U.S. Patent No. 10,167,428.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献