关键词: 全封闭条形煤场, 圆形煤场, 筒仓, 技术经济分析

Abstract: Two circular coal yards have been built in Laizhou Power Plant Phase I Project. However, in the operation of the coal yards, some problems exist such as unrealized first in first out of stored coal, difficulties in mixing various types of coal and the poor working environment. In this paper, three coal storage plans, i.e., the fully enclosed strip coal yard, the circular coal yard and the coal storage silo, are proposed and the technical and economic analysis on the three plans are conducted. The results indicate that the coal storage silo has the advantages of flexible and accurate coal mixing, small occupation space and full enclosure. Using the coal storage silo, first in first out of the coal will be realized, spontaneous combustion losses will be reduced, and workers will be protected from pulverized coal infringement. Therefore, it is recommended for the Phase II Project of the power plant.

Key words: fully enclosed strip coal yard, circular coal yard, coal storage silo, technical and economic analysis