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H酸主要用于生产活性染料、直接染料、酸性染料和变色酸等产品,以其为原料可生产近百种重要的染料品种。随着世界染料生产与贸易中心东移,东南亚和南亚一些国家和地区染料工业迅速发展,给我国H酸工业创造了极好的发展机遇。由于H酸生产过程复杂,“三废”量大,而且难以处理,因此20世纪八九十年代国外许多H酸生产商纷纷关闭其装置。20世纪90年代,由于巨大利润空间和欧美许
H-acid is mainly used for the production of reactive dyes, direct dyes, acid dyes, and chromotropic acid, and it can be used as a raw material to produce nearly 100 kinds of important dyes. With the eastward shift of the World Dyestuff Production and Trade Center, the rapid development of the dye industry in some countries and regions in Southeast Asia and South Asia has created an excellent development opportunity for the H acid industry in China. Due to the complexity of the H acid production process and the large amount of “three wastes”, it is difficult to handle. Therefore, many H acid producers overseas closed their facilities in the 1980s and 1990s. In the 1990s, due to huge profit margins and European and American promises