132
Views
1
CrossRef citations to date
0
Altmetric
Original Articles

Small-Scale Flameless Fluidized Bed Combustion—Perspectives for Energetic Utilization of Difficult Fuels

&
Pages 529-539 | Received 15 May 2013, Accepted 19 Nov 2013, Published online: 23 Apr 2014
 

Abstract

Fluidized bed combustion is a commonly used technology for a broad variety of fuels. The specific characteristics of fluidized beds (well-mixed conditions, high heat and mass transfer rates, low sensitivity toward high ash contents) are most advantageous for the treatment of difficult fuels such as high ash lignites, biomass with low ash melting point, gaseous/liquid/solid fuels with low calorific values, etc.

In this contribution, a flameless stationary fluidized bed combustion (FL-SFBC) is presented. In this operational mode, all oxidation reactions are completed within the bed, while avoiding over-fire and the necessity to add secondary air above the elevated bed. Thus, the FL-SFBC allows for strict temperature control, low NOx level without subsequent flue gas cleaning, and easy dry desulfurization for high sulfur-containing fuels. In combination with a flexible decoupling of combustion heat via a steam process or a hot air turbine, the FL-SFBC serves as a decentralized power unit providing electricity and/or heat for local energy demand.

Comprehensive fuel tests have been carried out in a 400 mm ID pilot scale plant. Results are presented for 2 different “difficult” fuels (chicken manure mixtures and catalyst-contaminated glycerine). It is shown that typical emission and bed agglomeration issues can be handled by adequate process control.

Published as part of the Eighth Mediterranean Combustion Symposium Special Issue with Guest Editors Nevin Selçuk, Federico Beretta, Mohy S. Mansour, and Andrea d’Anna.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 1,493.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.