Project for Residues Valorisation and Reutilization from an Oxy-Combustion Circulating Fluidized Bed Boiler with CO&lt;sub&gt;2&lt;/sub&gt; Capture

Jose A Gutiérrez Bravo ,Raquel García

doi:10.4236/jpee.2019.71002

Abstract

Power generation industry has tackled waste reuse and valorisation for decades. Nevertheless, new technologies, like Circulating fluidized bed (CFB) boilers operating in oxy-combustion, have an important gap of knowledge in residues characterization and valorisation. This project will tackle this. Furthermore, as a result of the high quantity of waste that these installations generate new business models can be opened. The project aims at characterizing the residues from a large scale oxy-CFB facility with carbon, capture, use and storage (CCUS) focusing on the larger and main residues produced: fly ash, bottom ash, and algae production from captured CO2. An analysis of possible uses and treatment needs, such as additives or preparation for use in agriculture or industry, will be carried out. Best re-utilization and valorisation options will be stated for fly ash, bottom ash and algae, aiming for a novel combination of CO2 capture technologies with recovery of valuable materials from different wastes, addressing different and sustainable solutions for their reuse, enhancing the feasibility of CCUS, and combining research with the creation of new business models towards a green economy more attractive to the public perception.

Highlights

New technologies, like Circulating fluidized bed (CFB) boilers operating in oxy-combustion, have an important gap of knowledge in residues characterization and valorisation
Best re-utilization and valorisation options will be stated for fly ash, bottom ash and algae, aiming for a novel combination of CO2 capture technologies with recovery of valuable materials from different wastes, addressing different and sustainable solutions for their reuse, enhancing the feasibility of CCUS, and combining research with the creation of new business models towards a green economy more attractive to the public perception
Carbon Capture and Storage (CCUS) technologies are one of the available technologies to mitigate greenhouse gas (GHG) emissions from large-scale fossil fuel usage recognized by the Zero Emissions Platform (ZEP) and the 2050 European Energy Roadmap [1] to mitigate this increase, providing a bridge between our present coal-based energy and a low-carbon energy future

Summary

Introduction

Carbon dioxide (CO2) is the primary greenhouse gas (GHG) emitted through human activities and its concentration to the atmosphere has risen faster than. Carbon Capture and Storage (CCUS) technologies are one of the available technologies to mitigate GHG emissions from large-scale fossil fuel usage recognized by the Zero Emissions Platform (ZEP) and the 2050 European Energy Roadmap [1] to mitigate this increase, providing a bridge between our present coal-based energy and a low-carbon energy future. Oxy-combustion with CO2 capture, use and storage is one of the leading and most cost-effective carbon reduction technologies, which has proved its potential for industrial scale power production and for retrofitting existing power stations. New technologies, like CFB boilers operating in oxy-combustion, have an important gap of knowledge in residues characterization and valorisation.

Objectives

Progress beyond the State-of-the-Art

Methodology and Associated Work Plan

Findings

Expected Benefits