The parameters of the pulverized coal injection pipes in different stages have been optimized on the basis of theoretic analysis and industrially experimental data.
通过理论分析，并结合工业实验数据，优化了不同生产阶段喷煤管调整的工艺指标。
2
This paper investigated the pressure drops for horizontal pipes in dense-phase pneumatic conveying of pulverized coal under high pressures through experiments and theoretic calculation.
通过试验和理论计算两种方法研究高压下煤粉密相气力输送水平管稳定段的压力损失情况。
3
When nanometer additive agent is added into plastic and the plastic is mixed and improved, the technical performance of the plastic pipes can reach the use standard in coal mines.