Open AccessThe study of palm kernel shell updraft gasification for supplying heat to an asphalt mixing plant
Author(s) -
Sunu Herwi Pranolo,
Joko Waluyo,
Ashri Khusnul Chotimah Alwahid Setiawan,
Hardi Hidayat,
W P Hati
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1098/2/022003
Subject(s) - palm kernel , wood gas generator , asphalt , raw material , combustion , waste management , environmental science , syngas , producer gas , mixing (physics) , process engineering , fuel gas , materials science , engineering , chemistry , coal , composite material , palm oil , agroforestry , physics , quantum mechanics , hydrogen , organic chemistry
Air-gasification converts biomass using air into combustible gaseous components which also known as producer gas. The combustion of those gases provides energy for any purposes. In an asphalt mixing plant, this technology is implemented using palm kernel shell as feedstock to generate heat for aggregate heating as a part of hot-mixed asphalt production. Both Cold Gas Efficiency (CGE) and Carbon Conversion Efficiency (CCE) are the common performance indicators of such process. This study examines a performance of an updraft fixed-bed gasifier to convert the shell into producer gas in supplying heat for increasing aggregate temperature from ambient to about 145 – 165°C at capacity of 800 kg/min. The feedstock flowrate was set at 990 kg/hour and equivalence ratios were varied at 0.04, 0.05 and 0.08. Because the gasification reactions were in equilibrium, the producer gas composition for calculating the CGE was predicted using thermodynamic model with minimizing Gibbs free energy. The feedstock and solid residue of the process were analysed to determine the carbon content for calculating the CCE. It is indicated that the performance of the gasification operation for supplying heat in an asphalt mixing plant is limited by operating conditions.