AR级硝酸精馏装置及制备方法
By using a parallel structure of large and small distillation kettles and a buffer tank for stable feeding, combined with the design of packed towers and shell-and-tube heat exchangers, the problems of low heat utilization efficiency, unstable feeding, and incomplete impurity removal in existing AR-grade nitric acid distillation units have been solved, resulting in reduced energy consumption and improved product purity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 佛山市华希盛化工有限公司
- Filing Date
- 2026-04-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing AR-grade nitric acid distillation units suffer from low heat utilization efficiency, poor feed stability, and inadequate design of the impurity removal process, resulting in high energy consumption and unstable product purity.
The system employs a parallel structure of large and small distillation kettles, combined with a buffer tank for stable feeding, and uses a packed tower and shell-and-tube heat exchanger for staged heat recovery and deep impurity removal. It also includes a pressure-stabilizing pipeline design to stabilize gas-liquid flow and pressure, thereby achieving staged heat utilization and efficient impurity removal.
It achieves a 30%-40% reduction in energy consumption, improved feed stability, more thorough impurity separation, and product purity reaching AR-grade standards, ensuring continuous production and efficient operation.
Smart Images
Figure CN121944564B_ABST