硫铵变色原因探究及工艺优化措施  

Optimal Preventing Measure and Exploration of Ammonium Sulfate Turning Blue

作　　者：徐德跃 赵云东 周斌 任梵 Xu Deyue;Zhao Yundong;Zhou Bing;Ren Fan(Yunnan Dawei coking Co.,Ltd.,Qujing 655338,China;Yunnan Coal Chemical industry Group Co.,Ltd.,Kunming 650231,China)

机构地区：[1]云南大为制焦有限公司,云南曲靖655338 [2]云南煤化工集团有限公司,云南昆明650231

出　　处：《云南化工》2022年第8期111-113,共3页Yunnan Chemical Technology

摘　　要：针对硫铵产品变蓝的问题,开展了全面分析和探究。针对当前生产工艺,提出了控制硫铵母液酸度、优化工艺操作、增加“大加酸”工艺和建立相关生产制度等措施,不仅解决了生产过程中硫铵产品变蓝的问题,产品质量达到了GB/T535-2020的要求,基本稳定在I型指标;而且使得净化后的煤气氨含量从降低至25 mg/m^(3)以下,喷淋式饱和器阻力也低于2 kPa,很好地提升了产品质量和工艺操作水平。This paper comprehensively analyzes and explores the reason why ammonium sulphate turns blue,and we put forward feasible optimal measures such as controlling the acidity of the ammonium sulfate mother liquor for preventing it to turn blue under the current production process.The ammonium sulphate produced with the way of optimization process meet the standards of GB/T535-2020.Basically stable at the I-type indicator.The effect of optimal processing is remarkable.The process also reduces the ammonia content of the purified gas from 25 mg/m^(3) below and the resistance of the spray saturator from 2 kPa below,which provides a strong guarantee for the long-term stable operation of the coking production device.

关 键 词：硫铵颜色 母液 亚铁氰化铁 酸度 

分 类 号：TQ444[化学工程—化学肥料工业]