氨酸法料床直接反应工艺的优化

Optimization of Material Bed Direct Reaction of Acid Ammoniation Process

概述了氨酸法料床直接反应工艺的特点,并提出其后续优化措施,即将浓硫酸的稀释热用于液氨的汽化或将部分原料加热熔融生成料浆,采用两段湿法洗涤的手段对造粒尾气、干燥尾气和冷却尾气进行综合治理。采用上述改进措施后,能进一步提高热量的利用水平,明显提高了尾气的净化效果,实现洗涤液零排放。

By outlining characteristics of material bed direct reaction of acid ammoniation process, optimization of follow-up measures, such as using dilution heat of concentrated sulfuric acid for liquid ammonia gasification or part of materials melting , adopting two-stage wet process to handle granulation tail gas , drying tail gas and cooling tail gas in an integrated manner are provided .By using the above-mentioned measures , heat utilization efficiency and purification of exhaust gas are both greatly improved and the goal of zero discharge of detergent can be realized .