于纯化芳香族羧酸制造过程中之高压冷凝物循环技术;HIGH-PRESSURE CONDENSATE RECYCLE IN THE MANUFACTURE OF PURIFIED AROMATIC CARBOXYLIC ACIDS

摘要

用于制造纯化芳香族羧酸之方法包含：自供应至一锅炉之锅炉供水产生高压水蒸气；使用此高压水蒸气加热一粗制芳香族羧酸，因此，高压水蒸气冷凝形成一高压冷凝物；及纯化此粗制芳香族羧酸形成一纯化芳香族羧酸。锅炉供水包含至少一部份之高压冷凝物及来自至少一另外来源之补充锅炉供水。; heating a crude aromatic carboxylic acid using the high-pressure steam, whereby the high pressure steam is condensed to form a high-pressure condensate; and purifying the crude aromatic carboxylic acid to form a purified aromatic carboxylic acid. The boiler feed water includes at least a portion of the high-pressure condensate and makeup boiler feed water from at least one additional source.