Rapid Synthesis and Evaluation of a Cheaper Corrosion Inhibitor for Steel in HCl Solution

Document Type : Research Article

Authors

1 Huabei Oilfield Tiancheng Industrial Group Co., Ltd., PetroChina, Renqiu 062552, P.R. CHINA

2 Tube Technology Services Company of CNPC BoHai Drilling Engineering Company Limited, Renqiu 062552, P.R. CHINA

Abstract

A corrosion inhibitor suitable for industrial production and field application was rapidly synthesized from benzene-1,2-diamine, benzaldehyde, methanol, hydrochloric acid, and FeCl3. The mechanism of corrosion and its inhibition was proposed. We investigated the effect of the main reactants on corrosion rate, and optimal synthetic composition (benzene-1,2-diamine 10 g, benzaldehyde 10 g and ferric chloride hexahydrate 8 g) of the inhibitor was determined by using an orthogonal experimental design. The corrosion inhibition performances for N80 and Q235 steel in acid medium and oilfield water-injection were studied by employing the weight loss method. The inhibition efficiency for N80 steel reached to 99.24% in 15 wt.% HCl solution for 4 hours at 90 °Cat the dosage of 1.2 wt.%, while in the water-injection, the efficiency for Q235 steel was 82.4% at 50 °C for 7 days at the concentration of 30 mg/L. Corrosion rates in acid medium and water-injection showed that the inhibitor has good corrosion inhibitive behavior for the steel surface and the inhibition efficiency increased with increasing concentration. Three kinds of compounds with synergistic corrosion inhibition were introduced to study, and ammonium bromide exhibited the best synergy. Attempts were made to fit the test values to different isotherms, it was found that the adsorption of the inhibitor on Q235 steel surface obeys Langmuir adsorption isotherm. The calculated value indicated that the adsorption reaction could spontaneously occur andthe inhibitor molecules could be well adsorbed on Q235 steel surface in oilfield water-injection at 50 °C.

Keywords

Main Subjects


[1] Dao-qianW., The Largest Profit of Petrochemical Industry is Effective Anticorrosion, Total Corrosion Control, 25: 2-5, 20 (2011).
[3] Park J.K., Jeong N.H., Corrosion Inhibition Effect
of Ester Containing Cationic Gemini Surfactants
on Low Carbon Steel
, Iran. J. Chem. Chem. Eng. (IJCCE), 35 (1):85-93 (2016).
[6] Djamel D., Tahar D., Hanane H., Salah C., Mousa Al-N., Corrosion Inhibition of Mild Steel by Two New
S-Heterocyclic Compounds in 1 M HCl
: Experimental and Computational Study, Corros. Sci., 94: 21-37 (2015).
[8] Elkadi L., Mernari B., Traisnel M., Bentiss F., Lagrenee M., The Inhibition Action of 3,6-bis(2-methoxyphenyl)-1,2-dihydro-1,2,4,5-tetrazine on the Corrosion of Mild Steel in Acidic Media, Corros. Sci., 42: 703-719 (2000).
[10] Pandian B.R., Mathur G.S., Solanum Tuberosum
as an Inhibitor of Mild Steel Corrosion in Acid Media
, Iran. J. Chem. Chem. Eng. (IJCCE), 28 (1): 77-84 (2009).
[11] Jokar M., Shahrabi Farahani T., Ramezanzadeh B., Electrochemical and Surface Characterizations of Morus Alba Pendula Leaves Extract (MAPLE) as a Green Corrosion Inhibitor for Steel in 1 M HCl, Journal of the Taiwan Institute of Chemical Engineers, 63: 436-452 (2016).
[12] Punita Mourya, Praveen Singh, Tewari A.K., Rastogi R.B., Singh M.M., Relationship between Structure and Inhibition Behavior of Quinolinium Salts for Mild Steel Corrosion: Experimental and Theoretical Approach, Corros. Sci., 95: 71-87 (2015).
[13] Hegazey R.M., Farag R.K., Nessim M.I., El-Feky A.A., Moustafa Y.M., Hashem A.I., Dispersion of Asphaltene Precipitation in Egyptian Crude Oil Using Corrosion Inhibitors, Petrol. Sci. Technol., 32: 2337-2344 (2014).
[15] Abderrahim K., Abderrahmane S., Inhibition of Copper Corrosion by Ethanolamine in 100 ppm NaCl, Iran. J. Chem. Chem. Eng. (IJCCE), 35(4):
89-98 (2016).
[16] Javadian S., Darbasizadeh B., Yousefi A., Ektefa F., Dalir N., Kakemam J., Dye-Surfactant Aggregates
as Corrosion Inhibitor for Mild Steel in NaCl Medium: Experimental and Theoretical Studies
, Journal of
the Taiwan Institute of Chemical Engineers
, 71:
344-354 (2017).
[18] Eshghi H., Rahimizadeh M., Shiri A., Sedaghat P., One-pot Synthesis of Benzimidazoles and Benzothiazoles in the Presence of Fe(HSO4)3
as a New and Efficient Oxidant
, Korean Chem. Soc., 33: 515-518 (2012).
 
[19] “Acidification Corrosion Inhibitor Performance Test Methods and Evaluation Indexes”, The Oil and
Gas Industry Standard of the People's Republic of China (SY/T 5405-1996).
[23] Bhuvaneshwari B., Selvaraj A., Iyer N. R., Ravikumar L., Electrochemical Investigations on the Performance of Newly Synthesized Azomethine Polyester on Rebar Corrosion, Mater. Corros., 66: 387-395 (2015).
[24] Wang L., Zhang S.-W., Guo Q., Zheng H., Lu D.-M., Peng L., Xion J., Corrosion Inhibition of Mild
Steel by Methyl Violet and Bromide Ion in Sulfuric Acid Solution
, Mater. Corros., 66: 594-602
(2015).
[34] “Technical Specifications and Evaluating Methods of Corrosion-Inhibitors for Oilfield Produced Water”, The Oil and Gas Industry Standard of The People's Republic of China (SY/T 5273-2014).
[35] Guang-Ling Song, Zhiming Shi, Corrosion Mechanism and Evaluation of Anodized Magnesium Alloys, Corros. Sci., 85: 126-140 (2014).
[36] Pandian Bothi Raja, Ahmad Kaleem Qureshi, Afidah Abdul Rahim, Hasnah Osman, Khalijah Awang, Neolamarckia Cadamba Alkaloids as Eco-friendly Corrosion Inhibitors for Mild Steel in 1 M HCl Media, Corros. Sci., 69: 292-301 (2013).