一般说来，电站煤质的品位低、灰含量高(低的固定碳含量)，直接气化效果很差。

Generally speaking, the coal of power plant is low-grade, high-ash (the low content of fixed carbon) and the effect of direct gasification is bad.

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稻壳灰是具有高硅酸盐含量的谷类的一种木质的硬层。

The rice husk is a ligneous hard layer of the cereal with high silicate content.

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渭河化肥厂原采用的黄陵煤由于煤质灰份含量及灰熔点偏高，影响德士古气化炉长周期稳定运行。

Weihe Chemical Fertilizer Plant originally used Huangling coal, but due to its high ash content and ash fusion point, it became an obstacle in the long term stable operation of the Texaco Gasifier.

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