The second Open Research Lecture will be delivered on Thursday, 18th of March, 2021 at 18:00.
Link to Zoom: https://tuc-gr.zoom.us/j/82372239714?pwd=bEd4aUMzZ1hlRmZsNjNPcC9WclNoUT09 to attend the lecture “Gasification-based syngas upgrading and purification system for enhanced power generation” by Asst. Prof. A. Giannis
Abstract
Thermochemical conversion of municipal solid waste (MSW) via incineration and/or gasification is one of the measures to minimize landfilling and generate electricity. Gasification converts the waste into gaseous fuel (syngas), which can be utilized in a combined cycle gas turbine (CCGT) with higher power generation efficiency compared to incineration. Although the gasification with combined cycle is a mature technology for electricity production using coal, it is still under development for MSW due to the challenges of syngas purification. We have developed a cost-effective technology for purification of syngas from MSW and provided clean fuel for CCGT. MSW is fed in a gasifier for syngas production. The syngas composition is controlled through MSW pre-treatment and optimization of gasification conditions. The produced syngas is treated in an innovative multi-stage purification system to remove impurities (e.g., particles, tar, HCl, sulphur) that otherwise compromise gas turbine robustness. A novel catalytic tar reforming process is developed to produce tar-free syngas. Moreover, the removal of sulphur species (H2S and COS) are carried out using metal oxide sorbents at temperatures above 200 °C that can reduce the capital expenses by 15% per kW compared to conventional syngas purification technologies operating below 40 °C.
