A method for compensating nitrogen for ethylene oxide filling weight of a low-temperature liquid tank car
By using gas-phase and liquid-phase cranes during the ethylene oxide filling process to calculate and compensate for nitrogen loss, the problem of weighing differences caused by nitrogen loss in the tank truck was solved, achieving accuracy and safety in filling weight.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NORTH HUAJIN CHEM IND CO LTD
- Filing Date
- 2026-04-21
- Publication Date
- 2026-07-17
AI Technical Summary
During the ethylene oxide filling process, nitrogen loss in the tank truck causes a discrepancy between the electronic scale weighing value and the mass flow meter reading, affecting the accuracy and safety of the filling weight.
By connecting gas and liquid phase cranes on the tank truck, the original nitrogen mass is calculated, the pressure remains constant during the filling process, nitrogen loss is recovered and compensated, and the nitrogen mass is calculated using the ideal gas law, thus achieving precise nitrogen replenishment.
It reduces the discrepancy value of repeated checks of electronic weighbridges, ensures the accuracy of filling weight, avoids the risk of mass flow meter failure and overfilling, and improves the stability and safety of storage.
Smart Images
Figure CN122407959A_ABST