As the key equipment of coal slurry preparation unitcoal slurry mixing tank plays a significant role in coal direct liquefaction.
作为煤炭直接液化技术中煤浆制备单元的关键装备—媒浆混合槽的作用也显得越来越重要。
2
Gas emits about half as much carbon dioxide as coal per unit of energy produced.
天然气的二氧化碳产生量是每单位煤炭释放能量时二氧化碳产生量的一半。
3
Howarth and his colleagues conclude that the greenhouse gas footprint of shale gas can be as much as 20 percent greater than, and perhaps twice as high as, coal per unit of energy.