Work

A carbonator model for CO2 capture based on results from pilot tests. Part II: Deactivation and reaction model

Year: 2024

Type: article

Abstract: Carbonate looping (CaL) is a promising technology for CO2 capture from carbon-intensive processes. The efficacy of CaL strongly depends on sorbent kinetics and carrying capacity. In this work, we present a novel particle sub-model to predict carbonation behavior of CaO for CO2 capture in a CaL process. The sub-model deals with sorbent deactivation and reaction kinetics. We follow an original approach to non-ideal calcination and introduce a new calculation methodology for sorbent aging that considers fluctuations in sorbent circulation and make-up rates. The sub-model presented in this article is used in conjunction with the reactor model of Part I to predict the CO2 capture efficiency of a CaL pilot plant. The results of the particle sub-model were validated with experimental data from thermogravimetric analysis (TGA) and pilot tests at the 300-kWth scale. Our study provides new insights for more accurately selecting assumptions and better modeling sorbent behavior in CaL systems.

Source: Chemical Engineering Journal

DOI: 10.1016/j.cej.2024.159041

Authors: Martin Greco-Coppi, Jochen Ströhle, Bernd Epple

Institution: Technische Universität Darmstadt

Language: English

Topic: Chemical Looping and Thermochemical Processes

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Climate action, Responsible consumption and production, Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $4,490