Paper details

Title:

Enhancing Gasifier Hot Gas Filter Performance through Innovative Ceramic Filter Regeneration Techniques

Author(s):

Mertzis, D., Skarlis, S., Koltsakis, G., Samaras, Z.

Document(s):

Abstract:

Cost-effective and durable producer gas cleaning is a necessary step towards the promotion of sustainable gasification systems for electricity production. Among available technologies, coupling of automotive ceramic particulate filters with a small scale fluidized bed gasifier at high temperature, may be a promising enabler for efficient hot gas cleaning. In order to ensure the continuous and un-interrupted gasifier operation, the filter needs to be periodically cleaned in order to sustain low pressure drop. In this study, dedicated synthetic gas bench experiments were performed on particle loaded small scale filters, in order to depict carbon reactivity under O2, H2O and CO2 presence. Based on experimental data, a mathematical model was developed, employing the commercial simulation platform Exothermia axisuite®, in order to get a deeper insight into the possible carbon oxidation pathways and respective kinetics. The calibrated model was used for evaluating various filter regeneration scenarios. Moreover, ceramic filter regeneration under reducing conditions is attempted with the use of steam and carbon dioxide as carbon consumption media, in order to avoid high temperature peaks and increase the overall carbon conversion efficiency. The results of the study are a key step towards the successful investigation of hot ceramic filter implementation in small scale biomass gasifiers for particulate and tar load removal.

Keywords:

gasification, hot gas cleaning, modelling, fluidized bed, combined heat and power generation (CHP)

Topic:

Biomass Conversion Technologies for Heating, Cooling and Electricity

Subtopic:

Gasification for power, CHP and polygeneration

Event:

27th European Biomass Conference and Exhibition

Session:

2CV.2.1

Pages:

771 - 778

ISBN:

978-88-89407-19-6

Paper DOI:

10.5071/27thEUBCE2019-2CV.2.1

Price:

FREE