CAJ | 학술논문

对磷铵（DAP）尾气冷凝脱湿数值模拟，揭示了DAP尾气传热传质过程为雾冷凝和膜冷凝共存的机理。基于模拟分析，提出了利用DAP尾气资源化循环生产磷酸一铵（MAP）的清洁工艺，现场实验证明了DAP尾气部分冷凝-磷酸降膜蒸发过程耦合技术的可行性。实验结果表明：DAP尾气能量的消减量可替代24万t/a MAP生产装置热能消耗的45％以上，展示了利用DAP尾气资源化循环生产MAP清洁生产技术的前景。
대린안（DAP）미기냉응탈습수치모의，게시료DAP미기전열전질과정위무냉응화막냉응공존적궤리。기우모의분석，제출료이용DAP미기자원화순배생산린산일안（MAP）적청길공예，현장실험증명료DAP미기부분냉응-린산강막증발과정우합기술적가행성。실험결과표명：DAP미기능량적소감량가체대24만t/a MAP생산장치열능소모적45％이상，전시료이용DAP미기자원화순배생산MAP청길생산기술적전경。
The numerical simulation on the process of condensation dehumidifying of ammonium phosphate exhausts reveals a co-existed mechanism of both fogging and film condensation for the heat and mass transfer process of DAP exhausts.Based on simulation analysis,the processes of condensation dehumidifying of ammonium phosphate exhausts were proposed. An unique technique was developed to make full use of the cleaner process for monoammonium phosphate (MAP)production combined with recycling of exhaust gases from DAP production.The feasibility of integrating the processes of partial condensation of tail gas with falling film evaporation of raw phosphoric acid was demonstrated by the pilot experiments.The experimental results could be used to substitute as much as 45%of the heat energy consumption for a 240 kt/a MAP production line.A very promising future application for the cleaner process of MAP production combined with recirculation of DAP exhaust gases was displayed.