1. 如果平炉居然有这么大的“优点”,为何西欧、美、日本都要淘汰它?
赶超先进、淘汰落后工艺,叫做“赶时髦”?
“The basic oxygen steelmaking eventually replaced the open hearth furnace. It rapidly superseded both the Bessemer process and Siemens-Martin process in the Western Europe by the 1950s and in the Eastern Europe by the 1980s, the last European open hearth furnace being stopped in 1993. In the US, steel production using the energy inefficient open hearth furnaces had stopped by 1992. The last open hearth shop in China was shut down in 2001.”
http://en.wikipedia.org/wiki/Open_hearth_furnace
2. “所谓超临界汽轮机就是蒸汽温度压力高于其临界点的高温高压机组,从原理和设计上并无多大台阶,但对于机械材料基础要求要高一些”
既然这么简单,“无多大台阶”,七零年代末的的中国为什么不去做呢?
即使在今天中国自己生产的超临界或超超临界的火电机组,某些特殊钢材还是须要仰赖国外。
3. 如果原油,不管是国产的,还是进口的,含硫量高,汽油、柴油的含硫量标准,就可以网开一面?
“环保”不管了?“损害机械”也不管了?