将“降膜式尿液预浓缩技术”应用到CO2气提法尿素装置中,泸天化是国内首创。叙述了在以高压洗涤器调温水作为尿液预浓缩热源的前提下,采用降膜式蒸发技术的确立依据和优势;介绍了该技术的工艺原理、流程,物料平衡计算和设备能力核算,以及运行情况和使用效果,并通过经济效益分析,阐明了本技术的可靠性和先进性。 The “falling film urine preconcentration technology” is applied to CO2 stripping urea plant, Lutianhua is the first domestic. Describes the established basis and advantages of adopting falling film evaporation technology on the premise of using high-pressured washer water as preconcentration heat source of urine; introduces the principle, flow, material balance calculation and equipment capacity calculation of the technology; and Operation and use of the results, and through the analysis of economic benefits, to clarify the reliability and advanced technology.