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78015 以二氧化碳代替二氧化硫试验—锦州石油六厂研究所,共5页。本文介绍;该厂对甲酚的工业生产采用甲苯磺酸盐法,要经磺化、中和、碱熔、酸化等四道工序,SO_2则是酸化物料。他们根据碳酸的酸性要强于酚的事实,用CO_2代替SO_2酸化酚钠盐取得了成功。车间碱熔浸渍后的酚钠盐的浓度分别为:360毫升/升和500毫升/升两种,取500克酚钠盐溶液,以400毫升/分的流速通进CO_2一小时,该溶液的pH值由14降至12,其水溶液与粗酚可得到明显分层。溶液中含Na_2SO_3及盼钠盐残渣也好分层,温度在37～52℃基本无影响。
78015 Carbon Dioxide Replaces Sulfur Dioxide Test - Jinzhou Petroleum Liuchang Institute, 共 5 页. This article describes; the factory of cresol industrial production using tosylate method, to be sulfonated, neutralized, alkali melting, acidification and other four processes, SO2 is acidified material. Based on the fact that carbonic acid is more acidic than phenol, the success of using CO 2 instead of SO 2 to acidify phenolate was achieved. The concentration of phenolsodium salt in the workshop after alkaline immersion was 360 ml / L and 500 ml / L respectively. Take 500 g of sodium phenolate solution and pass into CO 2 at the rate of 400 ml / min for one hour. The solution of pH dropped from 14 to 12, the aqueous solution and crude phenol can be significantly layered. The solution containing Na_2SO_3 and looking forward to sodium residue Ye Hao layered, the temperature at 37 ~ 52 ℃ almost no effect.