1世界丙烯供需状况 1999年，世界丙烯总产量为 5 020万 t，总消费量为 5 000万 t。主要的生产和消费地区是美国、西欧和日本。 1999年美国丙烯产量为 1 420万 t，占世界丙烯总产量的 28 3％，消费量为 1 420万 t，占世界丙烯总消费量的 28 4％，预计 2000年的需求增长率为 1 World supply and demand of propylene In 1999, the world total production of propylene was 50.2 million tons, with a total consumption of 50 million tons. The main production and consumption regions are the United States, Western Europe and Japan. In 1999, propylene production in the United States was 14.2 million tons, accounting for 28.3% of the total propylene production in the world, and consumption was 14.2 million tons, accounting for 28.4% of the total propylene consumption in the world. It is estimated that the demand growth rate in 2000 will be