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通过对酸性水气提装置进行改造采取换大侧线冷却器，改进压力控制方案等措施，使氨气纯度达到９９ ％以上，净化水的排放达到环保要求。
Through the transformation of the acidic water vapor extraction unit, the measures such as changing the side cooler and improving the pressure control scheme are taken to make the ammonia purity reach more than 99%, and the purified water discharge meets the environmental protection requirements.