coal gasification by indirect heating in a single moving bed reactor: process development & simulation

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ID: 152856
2015
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Abstract
In this work, the development and simulation of a new coal gasification process with indirect heat supply is performed. In this way, the need of pure oxygen production as in a conventional gasification process is avoided. The feasibility and energetic self-sufficiency of the proposed processes are addressed. To avoid the need of Air Separation Unit, the heat required by gasification reactions is supplied by the combustion flue gases, and transferred to the reacting mixture through a bayonet heat exchanger installed inside the gasifier. Two alternatives for the flue gas generation have been investigated and compared. The proposed processes are modeled using chemical kinetics validated on experimental gasification data by means of a standard process simulator (Aspen PlusTM), integrated with a spreadsheet for the modeling of a special type of heat exchanger. Simulation results are presented and discussed for proposed integrated process schemes. It is shown that they do not need external energy supply and ensure overall efficiencies comparable to conventional processes while producing syngas with lower content of carbon dioxide.
Reference Key
akhlas2015aimscoal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Junaid Akhlas;Silvia Baesso;Alberto Bertucco;Fabio Ruggeri
Journal Biology
Year 2015
DOI
10.3934/energy.2015.4.635
URL
http://www.aimspress.com/energy/article/466/fulltext.html
Keywords
process simulation central stations powerplants

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