CAJ | 학술논문

结合NH3-CO2-Urea-H2O(ACUW)体系扩展型UNIQUAC气液平衡模型、经验型液相焓值模型以及尿素水解反应动力学模型，建立了针对尿素水解系统的过程模拟数学模型并实现模拟计算，模拟结果能较好地描述尿素水解装置的实际情况。借助模拟程序分析了蒸汽流量、操作压力及进料组成对尿素水解系统的出气氨水比、排液氨含量的影响，可为企业的操作优化、节能减排提供理论指导和参考。
결합NH3-CO2-Urea-H2O(ACUW)체계확전형UNIQUAC기액평형모형、경험형액상함치모형이급뇨소수해반응동역학모형，건립료침대뇨소수해계통적과정모의수학모형병실현모의계산，모의결과능교호지묘술뇨소수해장치적실제정황。차조모의정서분석료증기류량、조작압력급진료조성대뇨소수해계통적출기안수비、배액안함량적영향，가위기업적조작우화、절능감배제공이론지도화삼고。
A rigorous simulation model for urea hydrolysis system has been established by combining the extended UNIQUAC vapor-liquid equilibrium model of NH3-CO2-Urea-H2O (ACUW) system with empirical liquid enthalpy model of ACUW solution and kinetic model of urea hydrolysis reaction. The process simulation is carried out successfully and the results agree with the actual running state of urea hydrolysis system very well. On the basis of the simulation system, the influences of steam flow, pressure, reflux flow, feed composition, and tray efficiency on the ratio of ammonia to water in vapor phase and ammonia concentration in outlet water of urea hydrolysis system were analyzed. This study can provide theoretical guidance and reference for optimization, energy-saving and emission reduction in actual industry.