Title:
Chemically Enhanced Char for Syngas Filtering Purposes
Author(s):
Pedrazzi, S., Allesina, G., Sebastianelli, L., Puglia, M., Morselli, N., Tartarini, P.
Document(s):
Paper
Poster
Abstract:
This paper investigates the performance of gasification char as syngas filter medium. Char obtained from a small-scale downdraft gasifier was analyzed and chemically enhanced through an acid treatment using a sulfuric acid solution in a thermostatic bath at 40 °C. The treated char presents a higher BET value of 465.9557 m2/g in comparison with the untreated sample which has a BET value of 394.4430 m2/g. However, the treated sample has a low metallic cations content (K, Fe and Sr) and consequentially a low ash content compared to the untreated sampled. Char samples are used as cartridge filter media in order to assess their tar adsorption potential using a modified “Tar Sampling Protocol” method. Experimental results show a noticeable tar content reduction in the syngas using char as filter, in-fact the treated char reduces the tar number from 1456 mg/Nm3 to 267.2 mg/Nm3 and the untreated char reduces the tar number from 1456 mg/Nm3 to 179.6 mg/Nm3. The difference in the tar adsorption is probably given by the char ash content that it is less in the treated sample.
Keywords:
gas cleaning, gasification, tar, char
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for power, CHP and polygeneration
Event:
26th European Biomass Conference and Exhibition
Session:
2CV.2.7
Pages:
694 - 698
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-2CV.2.7
Price:
FREE
