The Effects of Oxygen Enrichment and Fuel Composition on Rotary Kiln Lime Production
2015 (English)In: Journal of Engineering Technology, ISSN 0747-9664, Vol. 32, no 1, 30-43 p.Article in journal (Refereed) Published
This article discusses the impact of oxygen (O2) enrichment on rotary kiln lump lime production. A predictive simulation tool is utilized to investigate the effect of O2 enrichment on the following key parameters of the lime process: kiln temperature profile, product quality, specific energy consumption and kiln production capacity. Three fuel mixes - 100% coal, 90% coal and 10% waste derived fuel oil, and 90% coal and 10% sawdust - are simulated at three oxygen levels. The oxygen levels represent three scenarios: no enrichment (21% O2), moderate enrichment (23% O2), and moderate-to-high enrichment (25% O2). This work is a part of the on-going efforts to reduce the environmental impact of industrial production. Reducing emissions, utilizing biofuels and waste derived fuels, full utilization of raw materials, and energy efficiency are areas of importance for industry. In the long term, oxyfuel technology, i.e., combustion with recirculated kiln gases and pure oxygen, could allow for near-zero emission production and carbon sequestration from industry and power production. In the short term, emission reductions in lime production must be achieved through other means, such as energy efficiency. As a step on the path to a near-zero emission lime plant, this paper describes an investigation of the influence of oxygen enrichment in rotary kiln lime production. The simulated results show positive effects of O2 enrichment, and the simulation results have been used by the kiln operator for in-house training. Results indicate that oxygen enrichment applied to lime production can reduce energy consumption and emissions.
Place, publisher, year, edition, pages
American Society for Engineering Education , 2015. Vol. 32, no 1, 30-43 p.
Chemical Engineering Energy Engineering
IdentifiersURN: urn:nbn:se:umu:diva-105273ISI: 000355062900004OAI: oai:DiVA.org:umu-105273DiVA: diva2:824359