Parameter-Based Model for the Forecasting of Pipe Corrosion in Refinery Plants

Abstract

Corrosion of devices and pipes in refinery and petrochemical plants cause problems like deterioration of process efficiency and equipment reliability etc. Hence, a suitable technology is required to prevent accident caused by corrosion and raise process efficiency by forecasting the degree of corrosion. The corrosion problems on the top of the distillation column are more serious due to corrosive substances like hydrogen sulfide and chlorine etc. Therefore, in this study, corrosion rate was forecasted and applied through analysis of the corrosion mechanism on the top of refinery distillation column and the validity of the model was checked using the actual data.: considering interference effect caused by competitive reactions between caustic substances. The four components that affect corrosion the most, H2S, CO2, H+, and Cl–, were selected through analysis of the mechanism of corrosion on the top of refinery distillation tower. The model for the analysis of corrosion mechanism was analyzed in the viewpoint of transport phenomenon and reaction engineering, and parameters were estimated with the use of least-squares method.

Linseed oil polyol/ZnO bionanocomposite towards mechanically robust, thermally stable, hydrophobic coatings: a novel synergistic approach utilising a sustainable resource

“…Fig. [80][81][82] In the case of the LPP coating, the diffusion impedance of the coatings with respect to these ions acquires a Warburg impedance shape and the LPP/ZnO-0.06 nanocomposite coating in the 3.5 wt% HCl solution aer 12 h also acquires the same pattern, which suggests that the electrolyte penetrates into the polymeric matrix. The initial impedance value for the LPP coated CS was found to be below 10 4 U at the low-frequency end of the semicircle arc with the real axis ( Fig.…”

Preparation and characterization of silicon nitride (SiN)-coated carbon fibers and their effects on thermal properties in composites

“…In electronics engineering in particular, malfunctions, degraded reliability, and reduced device lifetimes resulting from the high heat generation caused by device miniaturization have increased the interest in and demand for materials that can effectively control generated heat [9][10][11][12][13][14]. High thermal conductivity is required to efficiently remove heat from a device, and materials with high conductivity can be classified as metals, ceramics, and carbons [12].…”

Efficient gaseous toluene photoconversion on graphene–titanium dioxide nanocomposites with dominate exposed {0 0 1} facets

“…Titanium dioxide (TiO 2 ) photocatalysis has been proven to be the most suitable method for widespread environmental applications due to its superior photocatalytic activity, chemical inertness, cost-effectiveness, photocorrosion resistance and strong oxidizing power [1][2][3][4][5]. The degradation of volatile organic compounds by TiO 2 photocatalysis oxidation is a growing tendency for air purification [4][5][6]24]. However, the photocatalytic activity of TiO 2 is still far below the level of practical application for the restrictive light absorption and high charge recombination rate [2][3][4][5][6][7][8].…”

“…The degradation of volatile organic compounds by TiO 2 photocatalysis oxidation is a growing tendency for air purification [4][5][6]24]. However, the photocatalytic activity of TiO 2 is still far below the level of practical application for the restrictive light absorption and high charge recombination rate [2][3][4][5][6][7][8].…”

“…It has been shown previously that introduce carbon materials, such as activated carbon, carbon nanotubes into TiO 2 can enhance the photocatalytic performance effectively [4,16]. Graphene (Gn), a 2 D carbonaceous material, has attracted much attention recently for its high thermal conductivity (5000 W m À1 K À1 ), excellent mobility of charge carriers (200,000 cm 2 V À1 s À1 ), large specific surface area (2630 m 2 g À1 ) and good mechanical stability [7,[9][10][11][12].…”