0

Full Content is available to subscribers

Subscribe/Learn More  >

Waste Combustion Technology Developments for Large Scale Plants

[+] Author Affiliations
Jens Sohnemann, Walter Schäfers, Armin Main

Fisia Babcock Environment (FBE) GmbH, Gummersbach, Germany

Paper No. NAWTEC20-7035, pp. 237-242; 6 pages
doi:10.1115/NAWTEC20-7035
From:
  • 20th Annual North American Waste-to-Energy Conference
  • 20th Annual North American Waste-to-Energy Conference
  • Portland, Maine, USA, April 23–25, 2012
  • Conference Sponsors: Materials and Energy Recovery Division
  • ISBN: 978-0-7918-4483-0
  • Copyright © 2012 by ASME

abstract

For the waste disposal of urban areas and major cities at the North American market place rather large scale energy from waste (EfW) plants are needed. This implies a mechanical input of approx. 40 Mg/h [39.36 tn l./h] and thermal input by waste per unit of 110 MW [375.3 MBTU/h] and more.

There are basic design criteria that feature large scale EfW plants:

- Layout of boiler with horizontal or vertical orientation of convective part.

- Top or bottom suspension of boiler.

- Flexible design of stoker regarding large throughput figures and heating values of waste with water or air cooled grate bars.

- Design and geometry of combustion furnace in order to optimize the flow pattern.

- Optimization of boiler steel structure: integrated steel structure for boiler and boiler house enclosure.

- Optimization of corrosion protection and maintainability of large scale boilers: cladding versus refractory lining.

- Maintenance aspects of the boiler.

The paper gives information on the pros and cons regarding the design features with special focus on optimized solutions for large scale EfW plants.

For the core component of the combustion system — the grate — Fisia Babcock Environment (FBE) is using forward moving grates as well as roller grates. The moving grate in STEINMÜLLER design, which is used in the great majority of all our plants, has specific characteristics for providing uniform combustion and optimal burnout.

The automatic combustion rate control system is the key component in the combustion process in order to receive good burn out quality in slag and flue gas as well as constant steam production and oxygen content of flue gas. This paper includes a detailed report on a modern control system with focus on a simple and efficient control structure.

Besides these measures regarding the combustion process, this paper also reports about the respective aspects and concepts for the flue gas cleaning systems. In this field the FBE CIRCUSORB® process was presented in previous papers and is now compared with a multistage wet flue gas cleaning system. The latter is relevant in case of very low emission requirements.

Copyright © 2012 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In