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“同是:一座塔,产量翻八番。氨合成塔是合成氨工厂的心脏设备。现在南化公司氨肥厂使用的一座氨合成塔,是一九三六年从国外进口的,日产合成氨三十九吨。随着化肥生产技术的发展,这座氨合成塔也日显其拙。一九五七年这个厂的技术人员和工人采取增大塔内径、增加催化剂填量等办法,使塔的生产猛增至日产合成氨二百二十吨。一九七○年,这个厂又将该塔的内件由原来的双套管内冷换热,改为单管并流内冷换热,塔的生产能力又增至日产二百四十吨。一九七四年以来,这个厂采用新技术和现代化控制仪表,对这
“The same is true: a tower, the output is doubling. The ammonia synthesis tower is the heart equipment of the ammonia plant. Now an ammonia synthesis tower used by the ammonia plant of Nanhua company was imported from abroad in 1936. With the development of fertilizer production technology, this ammonia synthesis tower has also become increasingly prominent. In 1957, the technicians and workers of this plant adopted methods such as increasing the inner diameter of the tower and increasing the amount of catalyst to make the tower. The production soared to 200 tons of ammonia per day. In 1970, the factory changed the internals of the tower from the original double-casing internal cold heat exchanger to a single-tube parallel internal cold heat exchanger. The production capacity increased to 240 tons per day. Since 1974, the plant has adopted new technologies and modern control instruments.