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介绍山东红日集团 2 0万吨 /年硫基 NPK复合肥生产中 ,连续转化的吸收生产工艺 ,对连续转化 HCl吸收系统因超温水量不足引起的 HCl收益率低、尾气中 HCl流量大的问题进行了改进。改造后 ,吨 KCl盐酸产量由0 .96吨提高到 1.11吨 ,尾气中 HCl流量由 0 .6 35 kg/ h降至 0 .3kg/ h,仅多产盐酸每年增加收入 2 2 5万元 ,并减少HCl气体排放量 2 .4 t
This paper introduces the continuous conversion absorption production process in the production of sulfur-based NPK compound fertilizer of 200,000 tons / year in Shandong Hongri Group. The HCl yield caused by the lack of over-temperature water in the continuous conversion system of HCl absorption is low, and the HCl flow rate in the exhaust gas is large The problem has been improved. After the transformation, the output of KCl hydrochloric acid per tonne increased from 0.96 tons to 1.11 tons, and the HCl flow rate in the tail gas decreased from 0.36 kg / h to 0.30 kg / h. Only prolific hydrochloric acid produced an additional income of 22.5 million yuan per year, And reduce HCl gas emissions by 2. 4 t