Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Co-combustion of floated sludge from a slaughterhouse wastewater treatment plant with eucalyptus woodchips in a biomass steam generator
Submission Author:
Fabiana de Marqui Mantovan , RS , Brazil
Co-Authors:
Fabiana de Marqui Mantovan, Joel Gustavo Teleken, Adriana Ferla de Oliveira, Eduardo Burin, Edson Bazzo
Presenter: Eduardo Burin
doi://10.26678/ABCM.ENCIT2022.CIT22-0277
Abstract
The floated sludge is a residue generated in slaughterhouses wastewater treatment plants, which can be applied in combustion with the main fuel in biomass boilers. In this regard, the present work aims to study the use of the floated sludge in mixture with eucalyptus woodchips in a boiler used for process steam generation. Field tests were performed in the steam generator with nominal capacity of 40 ton/h of saturated steam at 15 bar, considering floated sludge co-firing ratios up to 20% on a mass basis. The efficiency calculation was performed according to the indirect method of ASME PTC 4 (2013) standard. As a result, the efficiency of the steam generating unit increased with increasing the content of sludge mixed with woodchips up to the percentage of 15%. This was mainly caused by the reduction of energy losses associated with the flue gases as well as the reduction of CO emissions. On the other hand, the efficiency related to the 20% co-firing ratio showed a slight reduction due to increased energy losses and the difficulty of maintaining constant sludge feed into the feed hopper.
Keywords
Efficiency, Combustion, float sludge, woodchips, emission
