Development of a Unique Organic Acid Solution for Removing Composite Field Scales

Gamal, Hany; Elkatatny, Salaheldin; Alafnan, Saad; Bahgat, M.

doi:10.1021/acsomega.0c04335

Cited by 7 publications

(1 citation statement)

References 53 publications

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“…Hydrochloric acid (HCl) is commonly used to address scale issues in production pipe, serving as the most common solvent to dissolve CaCO3 scale [7]. The reaction between HCl and carbonate effectively dissolves scale [8], posing the risk of pipe corrosion due to the high corrosiveness [9]. To address pipe corrosion when using HCl in acidizing treatment, an additive is introduced to act as an inhibitor [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of EDTA Addition on Acidizing Treatment Process

Fitriyanti,

Pandjaitan,

Lukas

et al. 2023

CHEESA

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Acidizing treatment is commonly used to solve scale problem on production equipment. In this process, Hydrochloric acid (HCl) is often used to treat CaCO3 scale, posing the risk of pipe corrosion due to its high corrosive characteristics. Thus, the purpose of this study was to determine the impact of adding EDTA additive into HCl solution during the acidifying treatment procedure. The methodology included various stages such as scale identification, chemical scale removal test using 7.5% and 15% HCL solution, 15% HCl solution test with EDTA as an additive, and corrosion determination using corrosion coupon. The results showed that 15% HCl solution was very effective in removing CaCO3 scale but had a high corrosion rate of 186.255 mpy. Furthermore, the addition of 10 mL EDTA solution as an additive removed scale and reduced corrosion rate by approximately 85%.

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Section: Introductionmentioning

confidence: 99%

Effect of EDTA Addition on Acidizing Treatment Process

Fitriyanti,

Pandjaitan,

Lukas

et al. 2023

CHEESA

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Descaling of Evaporator Tubes in Sugarcane Factories Using Molasses as a Green and Effective Technology

El‑Nahas,

Khodari,

Hamam

et al. 2024

Sugar Tech

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Deposition inside sugarcane factory evaporators (SFE) significantly lowers the heat transmission and can cause corrosion. This consequently reduces their efficiency, which is clearly a severe issue in the industrial sector. Up to the present time, caustic soda remains the most widely used reagent for descaling sugar industry evaporators. Understanding the scale's composition assists in determining which kinds of cleaners can effectively clean the evaporators. Scales are built in sugar evaporators as a result of the phosphitation or sulfitation processes used to chemically clean juice. In this perspective, molasses is used to descale SFE as a green manner. Molasses includes significant amounts of organic acids and nitrogenous chemical compounds, as shown by GC-mass analysis, and can be utilized as cleaning agents. XRD patterns for four scales from different sugar evaporators indicated that calcium sulfate and calcium phosphate were the predominant components at Egypt's Quos Sugarcane Factory and Dishina Sugarcane Factory, respectively. Actually, dispersed molasses demonstrated an acceptable removal effectiveness of up to 65% in all tested evaporative bodies. Furthermore, molasses solutions were tested in both basic and acidic settings and did not promote corrosion through the body's evaporative tubes. The oxidation of the molasses mixture with air or hydrogen peroxide showed that the efficacy of scale removal decreased. The findings suggested that molasses, as byproduct of sugarcane factories can be successfully employed in descaling as a green cleaning agent. This could be helpful in the development of descaling materials for the industrial sector.

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