RESEARCH DYNAMIC THERMAL AND DYNAMIC TO HYDRO CORROSION PROCESS AT HIGH TEMPERATURE WITH PIPES STEEL IN H2SO4 ACID FACTORY
The article introduces the phenomenon of Hydro corrosion with steel when in the conditions of high temperature and pressure, especially piping systems in chemical factories. Based on the thermodynamic analysis, the reactions between Hydro and the steel surface layer have identified the conditions and trends of Hydro corrosion due to the influence of the temperature and working pressure of the pipeline. To creating practical applicability, the paper introduced the method of building mathematical models according to kinetic rules to develop the Hydro steel pipe corrosion process at high temperature and pressure. Mathematical models built in combination with boundary conditions determined according to production reality will allow a fairly accurate calculation of the life of the piping system or the erosion due to corrosion over time. If the temperature is above 200oC, hydrogen corrosion can be ignored. However, if the temperature is above 300 ° C, hydrogen corrosion will significantly be affected. The model also shows the dependence of hydrogen corrosion on temperature and pressure.