Techno-Economic Evaluations of Copper-Based Chemical Looping Air Separation System for Oxy-Combustion and Gasification Power Plants with Carbon Capture

Abstract

Energy and economic penalties for CO2 capture are the main challenges in front of the carbon capture technologies. Chemical Looping Air Separation (CLAS) represents a potential solution for energy and cost-efficient oxygen production in comparison to the cryogenic method. This work is assessing the key techno-economic performances of a CLAS system using copper oxide as oxygen carrier integrated in coal and lignite-based oxy-combustion and gasification power plants. For comparison, similar combustion and gasification power plants using cryogenic air separation with and without carbon capture were considered as benchmark cases. The assessments were focused on large scale power plants with 350–500 MW net electricity output and 90% CO2 capture rate. As the results show, the utilization of CLAS system in coal and lignite-based oxy-combustion and gasification power plants is improving the key techno-economic indicators e.g., increasing the energy efficiency by about 5–10%, reduction of specific capital investments by about 12–18%, lower cost of electricity by about 8–11% as well as lower CO2 avoidance cost by about 17–27%. The highest techno-economic improvements being noticed for oxy-combustion cases since these plants are using more oxygen than gasification plants.

Techno-Economic Analysis of a Small-Scale Biomass-to-Energy BFB Gasification-Based System

“…Although several studies on biomass gasification were recently published, most of them are focused on process optimization based on theoretical analyses or laboratory-scale experimental tests [16][17][18], with particular reference to advanced simulation models [19][20][21]. Several works assess the economic performance for possible applications in large-scale coal-and biomass-fuelled power plants [22][23][24]. There is however a lack of techno-economic analyses on the potential application of gasification technologies (in particular BFB) for small-scale combined heat and power (CHP) generation [25].…”

Structure Activity Relationships for Reversible O2 Chemisorption by the Solid Phases of Co(salen) and Co(3F-salen)

“…The discovery of an energy-efficient material for the swing absorption of O 2 remains highly sought for a wide range of applications from O 2 supplies to COPD patients, to aircraft and submarine emergency O 2 supplies, and for separation from H 2 in water electrolysis to name just a few. The typical energy consumption in units for the cryogenic separation of O 2 from air exceeds 200 kWh of electricity per ton of produced oxygen − and is thus associated with significant environmental impact. , Despite the eight intervening decades since Calvin and co-worker’s impressive studies using 42 variations on the Co­(salen) scaffold, and which were deemed highly important for the U.S. National Defense, no advance has been made. At that time, however, no SAR insight through crystallographic characterization was possible.…”

Techno-economic Optimization of the Combined Supercritical Carbon Dioxide and Air Brayton Cycles Driven by Copper-Based Chemical Looping Combustion

“…44 Furthermore, the existence of inflation rates makes it essential to utilize the chemical plant cost index (CEPCI) to upgrade all costs to the year 2021, i.e., eq 22. 49 125% from total equipment costs cooling water price 50 $0.01179/t copper oxide price 50 $1179/t direct labor (number of plant personnel) 50…”