This paper reported an experimental research of steady-state heat transfer behaviour of a gas flowing through a fixed bed under the different operating conditions. Studies had been carried out in a fixed-bed packed methanol synthesis catalyst percolated by air at appropriate flow rate. Both radial and axial direction temperature distribution had been investigated under the different operating c...

Due to concerns regarding fossil greenhouse gas emissions, biogenic material such as forest residues is viewed nowadays a valuable source of carbon atoms produce syngas that can be used synthesise biofuels methanol. A great challenge in using gasified biomass for methanol production the large excess syngas, compared H2 content. The water–gas shift (WGS) reaction often add and balance syngas. CO...

Electrospinning with consequent thermal treatment consists in a carbon fiber production method that spins polymer solution to create fibers diameters around few hundred nanometers. The treatments are used for the cyclization and then carbonization of material at 1700 °C one hour. unique structure micro- nano-carbon makes them promising various applications ranging from future battery designs fi...

This paper presents a new method for measuring tar concentration in biomass-derived producer gas streams. This solvent-free method is much simpler than the evaporative method of the International Energy Agency (IEA) tar protocol. In tests on producer gas from a fluidized bed biomass gasifier this so-called dry condenser method yielded tar measurements with precision better than 5% and accuracy ...

The main advantage of a fluidized bed is its capability in excellent gas-fuel mixing. However, due to the lacks of gas radial momentum, its lateral mixing of gas-solid is not adequate. Therefore, this research is focused on fluidized bed hydrodynamics enhancement using the modified gas distributor plate design. For getting an optimum fluidized bed hydrodynamics prediction, three different class...

A model for steam gasification of biomass was developed by applying thermodynamic equilibrium calculations. With this model, the simulation of a decentralized combined heat and power station based on a dual fluidized-bed steam gasifier was carried out. Fuel composition (ultimate analysis and moisture content) and the operating parameters, temperature and amount of gasification agent, were varie...

A biomass gasification model was developed using Aspen Plus based on the Gibbs free energy minimization method. This model aims to predict and analyze the biomass gasification process using the blocks of the RGibbs reactor and the RYield reactor. The model was modified by the incomplete equilibrium of the RGibbs reactor to match the real processes that take place in a rice husk gasifier. The mo...

Biomass gasification technology is a promising process to produce stable gas with wide range of applications, from direct use the synthesis value-added biochemicals and biofuels. Due high capital/operating costs necessity for prudent management thermal energy exchanges in biomass process, it important advanced sustainability metrics ensure that environmental other factors are addressed benefici...