An increase in bed temperature on gasification of dual reactor fluidized bed

Control of a Fluidized Bed Polyethylene Reactor

In present paper, dynamic behavior and control of a fluidized bed reactor for polyethylene production has been considered. A double active sites model for Ziegler-Natta catalysts is used for simulation of polymerization reaction. Hydrodynamic behavior of the bed is modeled using a two phase model including bubble and emulsion phases in which bubble phase has plug flow pattern with different...

An Experimental Investigation of Sewage Sludge Gasification in a Fluidized Bed Reactor

The gasification of sewage sludge was carried out in a simple atmospheric fluidized bed gasifier. Flow and fuel feed rate were adjusted for experimentally obtaining an air mass : fuel mass ratio (A/F) of 0.2 < A/F < 0.4. Fuel characterization, mass and power balances, produced gas composition, gas phase alkali and ammonia, tar concentration, agglomeration tendencies, and gas efficiencies were a...

Gasification of Biochar from Empty Fruit Bunch in a Fluidized Bed Reactor

A biochar produced from empty fruit bunches (EFB) was gasified in a fluidized bed using air to determine gas yield, overall carbon conversion, gas quality, and composition as a function of temperature. The experiment was conducted in the temperature range of 500–850 °C. It was observed that biochar has the potential to replace coal as a gasification agent in power plants. Hydrogen gas from bioc...

Process simulation and sensitivity analysis of waste plastics gasification in a fluidized bed reactor

This paper presents a simplified process simulation model of typical waste polyethylene gasification in a fluidized bed reactor using Aspen Plus. The proposed model incorporates both physical and chemical processes, including drying, pyrolysis, combustion and gasification, by using various inbuilt modules to predict the resulting product gas composition and temperature. A detailed sensitivity a...

Effect of Fe-olivine on the tar content during biomass gasification in a dual fluidized bed