A coated urea production system
By improving the components of the coating urea production system and modifying the urea structure, the problems of inaccurate coating addition and poor mixing effect were solved, achieving uniform coating of the coating liquid and improving the stability of urea, thereby enhancing the strength and sustained-release performance of urea products.
CN117259048BActive Publication Date: 2026-06-09CHONGQING JIANFENG CHEM
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHONGQING JIANFENG CHEM
- Filing Date
- 2023-09-13
- Publication Date
- 2026-06-09
Smart Images
Figure CN117259048B_ABST
Abstract
The application provides a coated urea production system, which comprises a coating liquid conveying system and a urea conveying system; the coating liquid conveying system comprises a coating liquid storage tank, a conveying pipeline and a spraying assembly arranged on the conveying pipeline which are sequentially connected; a coating power pump and a pressure adjusting system for controlling the spraying amount of the coating liquid are arranged on the conveying pipeline, the pressure adjusting system comprises the following control parameters: power air pressure 0.35-0.6 Mpa, pump outlet pressure 0.25-0.5 Mpa; the urea conveying system comprises a conveying belt and a stirring device arranged on the conveying belt, the modified urea has a core-shell structure, the inner core is urea particles, the intermediate coating layer is modified attapulgite and polyvinyl alcohol, and the outer shell is starch-acrylonitrile graft copolymer; the obtained urea has good coating effect, and the coating stability and the urea stability are both excellent, and the strength and the slow-release effect of the urea product are improved.
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