Accretion Control in Sponge Iron Production Kiln using Fuzzy Logic

Show simple item record Mharakurwa, Edwell T. Nyakoe, George N. Ikua, Bernard W. 2016-09-19T14:09:17Z 2016-09-19T14:09:17Z 2016-09-19
dc.description.abstract Sponge iron is the product generated by direct reduction of iron ore with aid of either carbon or natural gas under controlled temperatures and pressures within a rotary kiln. However the performance of rotary kilns is usually adversely affected by the formation of accretion. This accumulation of sintered solid particles which form rings along the length of the kiln hinders material flow, lowers productivity and life span of the kiln. To maintain the quality of sponge iron and improve on performance of rotary kilns, there is need to minimize accretion build up in the kiln. However due to the nonlinear nature of the reduction process dynamics, it is difficult to control accretion build up in the kiln. This paper proposes the control of accretion build up through the application of Fuzzy Logic control. The controller receives partial and imprecise data from field instruments and is able to maintain product quality under dynamic process conditions. MATLAB Fuzzy-Toolbox was used to model and simulate the design. A comparison is made between the designed Fuzzy system and the PID controller. Simulation results show that it is possible to reduce accretion build up from 27 % when using PID controller to 14.6 % with the use of Fuzzy control. en_US
dc.language.iso en en_US
dc.publisher JKUAT en_US
dc.relation.ispartofseries Journal of Sustainable Research in Engineering;1 (2) 2014
dc.subject Accretion en_US
dc.subject Fuzzy Logic en_US
dc.subject Kiln en_US
dc.subject Sponge iron en_US
dc.title Accretion Control in Sponge Iron Production Kiln using Fuzzy Logic en_US
dc.type Article en_US

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