国内大多数中小型工厂的热加工车间,以往是直接烧煤。这样使用煤炭资源,不仅热效率低,煤炭的能量不能充分发挥,造成浪费,而且还在大气中散放大量烟尘,直接危害车间内部及四周环境卫生,威胁工人的健康。可是,从我国目前的现实情况看,电、油作为燃料来大量使用,尚不可能。天然气资源也并不多,还受到地区的限制。城市煤气正在发展,目前民用煤气还处于供不应求的状况,因而要把城市煤气作为工业用燃料,也是有困难 Most domestic small and medium factory thermal processing workshop, in the past is direct coal. This use of coal resources, not only low thermal efficiency, the energy of coal can not give full play, resulting in waste, but also the release of a large number of dust in the atmosphere, directly endanger the workshop and the surrounding environmental health, threatening the health of workers. However, judging from the current situation in our country, it is impossible for electricity and oil to be used in large quantities as fuel. Natural gas resources are not many, but also by the regional restrictions. As urban gas is evolving, civilian gas is still in short supply at present. Therefore, it is also difficult to use city gas as industrial fuel