Task 5

Sustainability Analysis of Integrated Solar-Driven Ca-Looping Process for CO₂ Capture and Thermochemical Energy Storage with Cement Industrial Plant

🕒 18 months

Objectives | Development of holistic integrated model of a cement industrial plant using Solar-driven Ca-Looping process with CO₂ capture and Thermochemical Energy Storage. The model of task 4 will be used here jointly with Heat-Water Pinch Analysis and Sustainability GREENSCOPE indicators to determine a framework for Sustainability assessment of process alternatives.

Task Description | Here a holistic steady-state model for the integrated CSP-CaL-TCES with Cement process will be built. The simulation of model to accomplish different scenarios will create the required data to carry out a joint Water-Heat Pinch Analysis to provide the best configurations in terms of stream integration and consequent minimization of fresh water and primary energy consumption. For each scenario as result of the simulation different heat exchanger network and water-reutilization/regeneration network will be available. These data is crucial to develop a holistic framework using GREENSCOPE as Sustainability assessment tool. GREENSCOPE methodology was been developed to convert the conceptual principles ofgreen chemistry and engineering into a quantitative and realistic design tool. A list of GREENSCOPE indicators divided in material efficiency, environment, energy, and economy evaluate the whole process alternatives.
A deep integration with the cement plant will be explored in the holistic model by using materials as captured CO₂ from the cement production and some exhausted CaO could be converted in clinquer. The CO₂ capture using the Cal could be energetically possible is some renewable energy (from sun power) could be included in the system avoiding the use of fossil fuel and therefore reducing the fuel-GHG emissions. Moreover, industrial wastewater management will be addressed by applying reutilization (and eventual intermediate regeneration) strategy. This analysis could be performed by independent studies or with heat integration combined methodology.
The modeling activities will be carried out in Aspen Suite and with GREENSCOPE indicators. The optimization of the alternatives will implemented in GAMS software.

Results | Obtain an integrated model that will be used for process alternatives simulation and support decision makers in the choice of a more sustainable solution.