Investigation of Process Parameters Influence on Municipal Solid Waste Gasification with CO2 Capture via Process Simulation Approach

Abstract

Integration of gasification with CO2 capture using CaO sorbent is proposed as an alternative treatment to convert municipal solid waste (MSW) into energy. Aspen Plus process simulator was employed to study the process. Two models were built to represent the non-sorbent and the sorbent-enabled MSW gasification. The model validation against available experimental data shows high accuracy of the simulation result. The effect of CO2 capture using CaO sorbent on the syngas composition and lower heating value (LHV) was observed by comparing the two models, and sensitivity analysis was performed on both models. Several process parameters affecting the syngas composition and LHV were investigated, including CaO/MSW ratio, temperature, equivalence ratio, and steam/MSW ratio. The addition of CaO sorbent for CO2 capture was found to successfully reduce the CO2 content in the syngas, increase the H2 composition, and improve the syngas LHV at the temperature below 750 oC. The maximum H2 composition of 56.67% was obtained from the sorbent-enabled gasification. It was found that increasing equivalence ratio leads to a higher H2 concentration and syngas LHV. Raising steam/MSW ratio also increases the H2 production, but also reduces the LHV of the syngas. Observation of the temperature effect found the highest H2 production at 650 oC for both non-sorbent and sorbent-enabled gasification.

Combining green energy production with hazardous waste recycling: Railway sleepers as support of photovoltaic systems

“…We plan to present and possibly implement the framework structure for the solar panel system from a stock of hazardous wastes out of a used railway sleeper [16,17,18], which is available in Hungary in thousands of tons, and which we hope can serve as a good practice and create synergies with many other disciplines.…”

Gasification of refuse-derived fuel from municipal solid waste for energy production: a review

“…In tandem with advances in programming associated with high technology computational hardware, complicated numerical simulations and sophisticated calculations are easily realized over the last decades. Despite that many papers have been published on the modelling of biomass gasification (Aravind et al 2012 ; Cao et al 2020 ; Das et al 2020 ; Rahma et al 2021 ; Vecchione et al 2015 ) and refuse-derived fuel gasification (Barba et al 2011 ; Kardaś et al 2018 ; Násner et al 2017 ), concerted efforts are still required to contribute new findings to the existing database since there are countless types of biomass with different chemical compositions to enhance the accuracy of modelling.…”

“…The refuse-derived fuel obtained from the municipal solid waste can be converted into gaseous fuel via gasifi-cation and co-gasification. The refuse derive fuel can be co-gasified with different biomass and biochar to achieve synergistic effects, thus obtaining better quality of gaseous fuel than conventional gasification Das et al 2020;Rahma et al 2021;Vecchione et al 2015) and refuse-derived fuel gasification (Barba et al 2011;Kardaś et al 2018;Násner et al 2017), concerted efforts are still required to contribute new findings to the existing database since there are countless types of biomass with different chemical compositions to enhance the accuracy of modelling.…”

Performance analysis of power generation by wood and woody biomass gasification in a downdraft gasifier

“…After pyrolysis, RGibbs is applied for simulation of the biomass gasification. This reactor computes the syngas composition by minimizing the Gibbs free energy based on complete chemical equilibrium assumption [57][58][59][60][61]. Input streams to the RGibbs are decomposed biomass and air then combustion and reduction reactions will be occurred inside of the reactor.…”