尿素行业粉尘治理倍受关注，但缺乏适用的经济高效除尘技术。引入超浸润材料，超疏表面熔体造粒超亲表面捕获粉尘，是突破需求瓶颈的可行方案。而耐用超疏材料筛选、超疏表面液滴移热强化、防止液滴碰撞破碎和低成本回收尿素粉尘是技术难题，超浸润表面尿素熔体的浸润破坏机制、相变传热过程和碰撞破碎规律是科学关键。明确高温腐蚀性尿素熔体对超浸润表面破坏机理，比选表面物质设计微观结构提升超疏表面稳定性；掌握多级结构超疏表面球形液滴热量传递规律，构建双面超浸润材料强化换热；理解各向异性超疏表面液滴导向运动原理，实现液滴定向运动减少碰撞；明了熔体弹珠形成与碰撞行为机制，降低液滴碰撞后破碎聚并概率减少粉尘产生；了解超亲水表面液膜与含尘气体间相互作用，设计超亲水粉尘捕获网实现粉尘回收。在研究超浸润表面尿素熔体行为的科学基础上，构建大颗粒尿素无尘造粒绿色工艺，突破技术瓶颈满足环保需求，为推动超浸润材料应用提供参考。

Dust contamination problem in urea production is of great concern, but the applicable dedusting technology with low cost and high efficiency is absent. Introducing the super-wetted materials is a feasible solution to break through the bottleneck problem and achieve a dust-free urea production process by granulating urea melt on a super-urea-melt-phobic surface, and dedusting urea fine powder on a superhydrophilic surface. However, the selection of the durable and stable super-wetted material to tolerate urea melt, the heat transfer intensification of urea melt droplets through the super-urea-melt-phobic surface, the anti-collision and anti-crushing of melt droplets, and the capture and recovery of urea dust with low cost, are the technical challenges for realizing the application of super-wetted materials for urea industry. Here, three occurrences of urea melt droplets on the super-wetted surface, including the wetting and motion mechanism; phase transition and heat transfer process; and collision and breaking regularity, are the key basic scientific problems. Understanding the destruction mechanism of urea melt with high temperature, viscosity and corrosivity, to the super-urea-melt-phobic surface, and purposely selecting the proper surface microstructure and substance for stability improvement of the surface. Mastering the heat transfer principle of spherical urea droplets through the super-urea-melt-phobic surface with hierarchy structure and intensifying the heat transfer process by constructing the Janus superwetted material. Figuring out the directional motion regularity of droplets on anisotropy superwetted material and lowering their collision probability. Comprehending the formation mechanism and collision behavior of melt marbles and decreasing the probability of breaking and coalescing after collision of marbles, avoiding the production of urea dust. Perceiving the interaction between the water film on superhydrophilic surface and dusty air, and designing the superhydrophilic dust catchment gauze, achieving the urea dust entrapment and recovery. Based on the understanding of urea melt wetting behavior on the super-wetted surface, a green dust-free technology for production of large granule urea can be developed, breaking through the technology bottleneck for the demand of environmental protection, and providing a reference example for application of super-wetted material.