Groundnut shell gasification performance in a fluidized bed gasifier with bubbling air as gasification medium.

Autor: Singh D; Department of Chemical Engineering, Shiv Nadar University , Greater Noida , India., Yadav S; Department of Chemical Engineering, Shiv Nadar University , Greater Noida , India., Rajesh VM; Department of Chemical Engineering, Shiv Nadar University , Greater Noida , India., Mohanty P; Sardar Patel Renewable Energy Research Centre , Vallabh Vidhyanagar , India.
Jazyk: angličtina
Zdroj: Environmental technology [Environ Technol] 2019 Oct; Vol. 40 (24), pp. 3140-3152. Date of Electronic Publication: 2018 May 24.
DOI: 10.1080/09593330.2018.1476592
Abstrakt: This work was focused on finding the groundnut shell (GNS) gasification performance in a fluidized bed gasifier with bubbling air as gasification medium. GNS in powder form (a mixture of different particle size as given in table 8 in the article) was gasified using naturally available river sand as bed material, top of the bed feeding, conventional charcoal as bed heating medium, and two cyclones for proper cleaning and cooling the product gas. Experiments were performed using different operating conditions such as equivalence ratio (ER) between 0.29 and 0.33, bed temperature between 650°C and 800°C, and feedstock feeding rate between 36 and 31.7 kg/h. Different parameters were evaluated to study the gasifier performance such as gas yield, cold gas efficiency, carbon conversion efficiency (CCE), and high heating value. The most suitable ER value was found to be 0.31, giving the most stable bed temperature profile at 714.4°C with 5-10% fluctuation. Cold gas efficiency and CCE at optimal ER of 0.31 was found to be 71.8% and 91%, respectively.
Databáze: MEDLINE