粗煤气 meaning in English

crude gas
raw gas

These results very close to engineering fact , then analyzed mostly factors : oxygen - coal mole ratio which affect cws gasification process and coal gas component on outlet , also advanced any measures to increase coal gas effective component ( co + h2 ) on outlet
得到了气化炉内的温度场、流场、浓度场以及出口粗煤气成分，其结果与工程实际相比非常接近；并利用得到的结果分析了影响水煤浆气化过程和出口煤气成分的主要因素即氧煤比，提出了提高出口煤气有效成分( co + h2 )的措施。