Natural gas deacidification process characterization method and device based on deacidification tower
By coupling solubility, chemical reaction and phase equilibrium models, and combining them with the deacidification tower model, a three-layer iterative solution method was adopted to solve the problem that the simulation results in the digital simulation method of natural gas amine deacidification process do not match the actual process, and to achieve high-precision simulation of multi-component systems and the coexistence of multiple acid gases.
Patent Information
- Application Number
- CN202511120589.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-11
- Publication Date
- 2025-12-19
AI Technical Summary
Existing digital simulation methods for natural gas amine deacidification processes fail to fully reflect the chemical reactions, phase equilibrium, and physical dissolution processes during deacidification, resulting in simulation results that do not match the actual process, especially when multiple systems and multiple acid gases coexist.
By coupling the pre-generated solubility model of the natural gas deacidification process with the chemical reaction equilibrium model, a first coupled model is generated. This first coupled model is then coupled with the phase equilibrium model to generate a second coupled model. Finally, the natural gas deacidification process is characterized by the equilibrium constant model and the deacidification tower model. The third coupled model is solved using a three-layer iterative solution method, which combines chemical reaction, gas-liquid phase equilibrium, and tower model.
It achieves better simulation of the natural gas deacidification process in multi-component systems and when multiple acid gases coexist, with better generalization and accuracy, thus improving the precision of digital simulation.