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Records with Type: Presentation
Finding the Signal in the Noise: Determining North America’s best path forward for sustainable energy
Thomas A Adams II
March 31, 2019 (v2)
Keywords: Calcium Looping, Carbon Dioxide Capture, Chemical Looping, Life Cycle Analysis, Meta-Study, Oxyfuels, Postcombustion Capture, Solid Oxide Fuel Cells, Technoeconomic Analysis
One of the largest engineering challenges of our time is finding technical solutions that permit the use of our energy resources in a sustainable way. In order to achieve meaningful and positive change, new energy systems must adhere to the triple bottom line of sustainability. This means that new technical solutions must be economically, socio-politically, and environmentally sustainable, such that they can be rapidly adopted and accepted. The engineering literature is full of a great many technical proposals for new energy systems, but it turns out to be quite hard to objectively look at them all, see through the hype, and decide which are the best and most promising technologies in which to invest our research and development dollars. In this talk, I will present a case study with the results of our recent meta-study covering over 100 candidate electricity generation systems with carbon dioxide capture, in order to determine which are the most promising classes of technologies. I wi... [more]
Coke Oven Gas Conversion Efficiency Improvement by System Upgrading to Combined Cycle Power Plant
Lingyan Deng, Thomas Adams II
October 25, 2018 (v4)
Keywords: Coke oven gas, combined cycle power plant, GAMS optimization, MDEA desulphurization
Coke oven gas (COG) is one of the main by-products generated from steel refineries. In most cases, COG is used only to generate low pressure steam for process heat needs or for small amounts of electricity production. Carbon emissions are inevitable in this COG utilization method. However, carbon emissions are no longer free: the federal government has proposed a minimum carbon tax scheme which incentivises the steel industry to upgrade their present system in order to maintain their profitability. Based on a local steel refinery case study, we propose retrofitting the plant with a combined cycle power plant (CCPP) using COG as fuel input in order to help reduce CO2 emissions and increase energy efficiency. However, COG contains a significant amount of sulphur compounds which have to be removed before it can be used as fuel input for CCPP. Therefore, a MDEA based desulphurization process is proposed to reduce the main sulphur content (H2S) in COG to less than 1 ppmv. ProMax is used to... [more]
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