最近国外对活性炭的需要迅速增长,例如:美国在第二次世界大战前的每年产量为15,000吨,到一九四五年战争结束时已发展到年产量约为30,000吨。一九六○年已更进一步发展到年产量约为55,000吨。目前从生产上的推算,其年产量约达140,000吨。在欧洲几个生产活性炭的主要国家:荷兰年产量约为30,000吨,西德20,000吨,法国15,000 Recently, the demand for activated carbon abroad has grown rapidly. For example, the United States produced 15,000 tons per year before the Second World War, and by the end of the war in 1945 it had grown to an annual production of about 30,000 tons. In 1960, it has further developed to an annual production of about 55,000 tons. At present, the annual output of the project is estimated to be 140,000 tons. Several major countries producing activated carbon in Europe: The Netherlands has an annual output of about 30,000 tons, West Germany 20,000 tons, France 15,000