Theoretical Calculation And Structure Finite Element Analysis On The New Type MPS Medium Speed Coal Mill

MPS medium-speed coal mill is mainly used in large thermal power plant, can bepolished anthracite, bituminous coal and high moisture lignite. Old MPS medium-speedcoal mill can also manufacture anthracite and bituminous coal, but the grinding highmoisture lignite has significant limitations.Because our country coal resource is rich, lignite is used as fuel in large Numbersin the coal-fired power stations. Because the MPS type medium speed mills has goodgrinding performance and control performance, and maintenance quantity is small, sothe application range is more and more widely. Each electric power design institute andusers want medium-speed coal mill is used to manufacture the lignite, leading to theneed to solve the medium-speed coal mill on lignite coal grinding and drying.In order to meet the demand of the market, the new MPS medium-speed coal milltechnology was introduced in the domestic market, meet the needs of the variouselectric power design institute and the user.Coal mill is quite important auxiliary equipment power plant, its operationconditions directly affect the safety, stability and economic behavior of unit operation.This thesis mainly from the following several aspects work:(1) the first briefly describes the MPS type medium speed coal development presentsituation at home and abroad.(2) the second introduces the new MPS type structure, performance and workingprinciple of medium-speed coal, etc.(3) then the selection of new MPS type medium speed mills calculation, heat balancecalculation and the calculation of each parameter.(4) Explore new MPS medium-speed coal mill sealing structure design improvement.(5) according to the finite element analysis of main components of new MPS typemedium speed mills are analyzed in mechanics.This paper based on the calculation of the coal mill make the structure more reasonable,more convenient maintenance, reduce economic cost.