Comparison of energy efficiency between E and MPS type vertical spindle pulverizer based on the experimental and industrial sampling tests

Weining Xie, Yaqun He, Fengnian Shi, Yong Huang, Weiran Zuo, Shuai Wang, Biao Li, Hua Wei and Nianxin Zhou

Energy, 2017, vol. 130, issue C, 174-181

Abstract: 0.5%–2% gross power generation of coal power plant is consumed by vertical spindle pulverizer (VSP), and it is essential to select a VSP with better operational performance. Simulated studies of lab-scale mills, which show the similar breakage mechanism with VSP, and industrial sampling on VSPs are conducted to compare energy efficiencies of E and MPS type VSPs (with the grinding media of balls and tread rollers, respectively). The classical energy-size reduction model is modified with the addition of particle size in the exponential form to compare the grinding energy efficiency (product fineness for the certain specific energy) of two lab-scale mills. Also, differences in structure and operational parameters of lab-scale mills are considered. For the industrial sampling tests of two VSPs, recorded data and size distribution of sampled materials are preliminarily compared. Product t10 is selected as the bridge to connect the specific grinding energy and size distribution of products. The modified breakage model is combined with the King’s equation to compare the energy efficiency on the premise of feed in the same fineness. Comprehensive comparison of the results obtained from both lab-scale and industrial-scale VSPs suggests that the MPS type VSP shows the higher grinding energy efficiency and lower total energy consumption.

Keywords: Energy efficiency; Experimental study; Industrial sampling; Vertical spindle pulverizer (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:130:y:2017:i:c:p:174-181

DOI: 10.1016/j.energy.2017.04.113

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