Performance of corrosion inhibitor of high salt oxygen system in Xinjiang Oilfield

Abstract

Abstract:

In order to solve the problem of oxygen corrosion in oilfields，a Schiff base corrosion inhibitor TMCAM with multiple adsorption sites was synthesized using trans-p-methoxycinnamaldehyde and 3-aminobenzoic acid as the main raw materials. Firstly，the corrosion inhibition performance of different concentrations of Schiff base corrosion inhibitor TMCAM on Q235 steel in 60 ℃ oxygen-containing oilfield simulated water was evaluated by the dynamic weight loss method. The results showed that when the concentration of TMCAM was 60 mg/L，the corrosion rate of Q235 steel was 0.062 4 mm/a，meeting the site requirements. When TMCAM concentration was 100 mg/L，the corrosion rate of Q235 steel was only 0.036 8 mm/a，and the corrosion inhibition rate could reach 90%. Secondly，the characterization techniques such as scanning electron microscopy，electrochemical method，and contact angle test were used to evaluate the corrosion inhibition performance and analyze its corrosion inhibition mechanism. The results showed that TMCAM was a mixed type corrosion inhibitor with a bias cathode，and the adsorption ability between TMCAM molecules and Fe was strong. Moreover，TMCAM could form a hydrophobic film on the steel surface，reducing the contact time between oxygen-containing wastewater and pipelines，slowing down corrosion and protecting pipelines. Finally，molecular simulation technology was used to analyze the relationship between the corrosion inhibitor’s corrosion inhibition performance and the molecular configuration of the corrosion inhibitor from a theoretical perspective. The results showed that the molecular structure of TMCAM had a strong adsorption capacity，which was higher than that of Schiff base corrosion inhibitors reported in the literature.

Key words: Schiff base corrosion inhibitor, electrochemistry, computational chemistry

摘要：

为解决油田氧腐蚀问题，以反式对甲氧基肉桂醛、3-氨基苯甲酸为主要原料合成了具有多个吸附位点的席夫碱缓蚀剂TMCAM。首先，通过动态失重法评价了不同浓度的席夫碱缓蚀剂TMCAM在60 ℃含氧油田模拟配水中对Q235钢的缓蚀性能。结果表明，在TMCAM质量浓度为60 mg/L时，Q235钢的腐蚀速率为0.062 4 mm/a，满足现场要求；TMCAM投加质量浓度为100 mg/L时，Q235钢腐蚀速率仅为0.036 8 mm/a，缓蚀率可达到90%。其次，采用扫描电镜、电化学法、接触角测试等表征技术评价了TMCAM的缓蚀性能并分析其缓蚀机理。结果表明，TMCAM是一种偏阴极的混合型缓蚀剂，TMCAM分子与Fe之间的吸附能力强，且TMCAM可在钢表面形成疏水膜，减少了含氧污水与管道的接触时间，减缓了腐蚀，进而保护了管道。最后，通过分子模拟技术从理论角度分析了缓蚀剂的缓蚀性能与缓蚀剂分子构型之间的关系，结果显示TMCAM分子结构具有较强的吸附能力，高于文献报道的其他席夫碱缓蚀剂。

关键词: 席夫碱缓蚀剂, 电化学, 化学计算

CLC Number:

X703

Yicheng LI, Xiaohong GUAN, Lanju KONG. Performance of corrosion inhibitor of high salt oxygen system in Xinjiang Oilfield[J]. Industrial Water Treatment, 2023, 43(6): 143-149.

李怡成, 关小红, 孔兰菊. 新疆油田高盐含氧体系缓蚀剂的性能研究[J]. 工业水处理, 2023, 43(6): 143-149.

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URL: https://www.iwt.cn/EN/Y2023/V43/I6/143

Figures/Tables 10

Fig. 1 Synthesis of Schiff base TMCAM

Table 1 Dynamic corrosion inhibition rate of Q235 steel sheet of TMCAM with different concentrations

缓蚀剂	药剂投加质量浓度/（mg·L^-1）	腐蚀速率/（mm·a^-1）	缓蚀率/%
空白	0	0.361 4	0
TMCAM	20	0.173 1	52
	40	0.103 5	71
	60	0.062 4	82
	80	0.041 7	88
	100	0.036 8	90

Fig. 2 Morphology of Q235 steel sheet after dynamic corrosion

Fig. 3 Micromorphology of Q235 steel sheet after dynamic corrosion

Fig. 4 Polarization curves of corrosion inhibitors with different concentrations

Table 2 Polarization curve parameters of corrosion inhibitors with different concentrations

TMCAM质量浓度/（mg·L^-1）	腐蚀电流密度/（μA·cm^-2）	阴极斜率	阳极斜率	腐蚀电位/V	缓蚀率/%
0	32.01	-171.9	351.7	-0.755	0
20	15.41	-148.0	316.4	-0.718	51.86
40	8.66	-151.9	316.2	-0.702	72.94
60	5.37	-133.4	294.3	-0.693	83.22
80	3.02	-118.1	279.6	-0.685	90.56
100	2.77	-120.3	300.1	-0.678	91.35

Fig. 5 Impedance spectra of corrosion inhibitors with different concentrations

Table 3 Water contact angle of corrosion inhibitor film

介质	左接触角/（°）	右接触角/（°）	接触角/（°）
Q235钢片	23.6	23.8	23.7
缓蚀剂浸泡后的Q235钢片	88.2	88.8	88.5

Fig. 6 Chemically calculated molecular geometry optimization structure and frontier orbit of corrosion inhibitor TMCAM

Table 4 Calculation results of corrosion inhibitor TMCAM molecular structure unit

E _HOMO/eV	E _LUMO/eV	χ/eV	ζ/eV	ω	ε	ΔN
-4.67	-2.37	3.52	1.15	2.69	0.37	1.51

References 22

1	陈德胜，龙媛媛，刘璐，等. 胜利油田孤六联合站污水腐蚀与防护措施［J］. 腐蚀与防护，2010，31（10）：800-802.
	CHEN Desheng， LONG Yuanyuan， LIU Lu，et al. Polluted water corrosion and protection measures at a joint station in Shengli Oilfield［J］. Corrosion & Protection，2010，31（10）：800-802.
2	石仁委，龙媛媛. 油气管道防腐蚀工程［M］. 北京：中国石化出版社，2008：27-35.
3	谭晓林，龙媛媛，刘晶姝，等. 胜利油田抗氧缓蚀剂的研制与应用［J］. 油田化学，2020，37（3）：504-509. doi:10.19346/j.cnki.1000-4092.2020.03.022
	TAN Xiaolin， LONG Yuanyuan， LIU Jingshu，et al. Development and application of an antioxidant corrosion inhibitor in Shengli Oilfield［J］. Oilfield Chemistry，2020，37（3）：504-509. doi:10.19346/j.cnki.1000-4092.2020.03.022
4	雷自刚，李丹平，梁蓝云，等. 新型油气田用高效抗氧缓蚀剂的应用效果研究［J］. 石油管材与仪器，2021，7（6）：42-46.
	LEI Zigang， LI Danping， LIANG Lanyun，et al. Application effect of a new type of high efficiency anti-oxygen corrosion inhibitor for oil and gas fields［J］. Petroleum Tubular Goods & Instruments，2021，7（6）：42-46.
5	KEYPOUR H， REZAEIVALA M， VALENCIA L，et al. Synthesis and crystal structure of Mn（Ⅱ） complexes with novel macrocyclic Schiff-base ligands containing piperazine moiety［J］. Polyhedron，2008，27（14）：3172-3176. doi:10.1016/j.poly.2008.07.012
6	CHOHAN Z H， PERVEZ H， RAUF A，et al. Antibacterial and antifugal mono- and di-substituted symmetrical and unsymmetrical triazine-derived Schiff-bases and their transition metal complexes［J］. Journal of Enzyme Inhibition and Medicinal Chemistry，2004，19（2）：161-168. doi:10.1080/14756360310001656745
7	MOBIN M， MASROOR S. Experimental and theoretical study on corrosion inhibition of mild steel in 20% formic acid solution using Schiff base-based cationic gemini surfactant［J］. Tenside Surfactants Detergents，2016，53（2）：157-167. doi:10.3139/113.110421
8	CHAUHAN D S， JAFAR MAZUMDER M A， QURAISHI M A，et al. Microwave-assisted synthesis of a new piperonal-chitosan Schiff base as a bio-inspired corrosion inhibitor for oil-well acidizing［J］. International Journal of Biological Macromolecules，2020，158：231-243. doi:10.1016/j.ijbiomac.2020.04.195
9	BANUPRAKASH G， PRASANNA B M， SANTHOSH B M，et al. Corrosion inhibitive capacity of vanillin-based Schiff base for steel in 1 M HCl［J］. Journal of Failure Analysis and Prevention，2021，21（1）：89-96. doi:10.1007/s11668-020-01036-z
10	SY/T 5273—2014 油田采出水处理用缓蚀剂性能指标及评价方法［S］. doi:10.1520/g0170
	SY/T 5273—2014 Technical specifications and evaluating methods of corrosion-inhibitors for oilfield produced water ［S］. doi:10.1520/g0170
11	CROLET J L. Mechanisms of uniform corrosion under corrosion deposits［J］. Journal of Materials Science，1993，28（10）：2589-2606. doi:10.1007/bf00356194
12	蒋秀，郑玉贵. 油气井缓蚀剂研究进展［J］. 腐蚀科学与防护技术，2003，15（3）：164-168. doi:10.3969/j.issn.1002-6495.2003.03.011
	JIANG Xiu， ZHENG Yugui. Research progress of inhibitor for oil and gas well［J］. Corrosion Science and Technology Protection，2003，15（3）：164-168. doi:10.3969/j.issn.1002-6495.2003.03.011
13	HAN Peng， CHEN Changfeng， YU Haobo，et al. Study of pitting corrosion of L245 steel in H₂S environments induced by imidazoline quaternary ammonium salts［J］. Corrosion Science，2016，112：128-137. doi:10.1016/j.corsci.2016.07.006
14	USHER K M， KAKSONEN A H， BOUQUET D，et al. The role of bacterial communities and carbon dioxide on the corrosion of steel［J］. Corrosion Science，2015，98：354-365. doi:10.1016/j.corsci.2015.05.043
15	LIU Zhenguang， GAO Xiuhua， DU Linxiu，et al. Hydrogen assisted cracking and CO₂ corrosion behaviors of low-alloy steel with high strength used for armor layer of flexible pipe［J］. Applied Surface Science，2018，440：974-991. doi:10.1016/j.apsusc.2018.01.223
16	张宇，郭继香，杨矞琦，等. 耐高温抗H₂S/CO₂缓蚀剂的合成及评价［J］. 精细化工，2019，36（11）：2309-2316. doi:10.13550/j.jxhg.20190024
	ZHANG Yu， GUO Jixiang， YANG Yuqi，et al. Synthesis and evaluation of high temperature resistant H₂S/CO₂ corrosion inhibitor［J］. Fine Chemicals，2019，36（11）：2309-2316. doi:10.13550/j.jxhg.20190024
17	胡松青. 高含H₂S、CO₂油气田缓蚀剂的设计与合成［D］. 青岛：中国石油大学（华东），2010.
	HU Songqing. Design and synthesis of corrosion inhibitors in oil and gas fields with high H₂S and CO₂ ［D］. Qingdao：China University of Petroleum（East China），2010.
18	ZHAO Qing， GUO Jixiang， CUI Guodong，et al. Chitosan derivatives as green corrosion inhibitors for P110 steel in a carbon dioxide environment［J］. Colloids and Surfaces B：Biointerfaces，2020，194：111150. doi:10.1016/j.colsurfb.2020.111150
19	BAI Pengpeng， LIANG Yuxuan， ZHENG Shuqi，et al. Effect of amorphous FeS semiconductor on the corrosion behavior of pipe steel in H₂S-containing environments［J］. Industrial & Engineering Chemistry Research，2016，55（41）：10932-10940. doi:10.1021/acs.iecr.6b03000
20	PARSONS R. Atlas of electrochemical equilibria in aqueous solutions［J］. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry，1967，13（4）：471. doi:10.1016/0022-0728(67)80059-7
21	KUMAR S A， QURAISHI M A. Study of some bidentate Schiff bases of isatin as corrosion inhibitors for mild steel in hydrochloric acid solution［J］. International Journal of Electrochemical Science，2012，7（4）：3222-3241.
22	SAHA S K， MURMU M， MURMU N C，et al. Synthesis，characterization and theoretical exploration of pyrene based Schiff base molecules as corrosion inhibitor［J］. Journal of Molecular Structure，2021，1245：131098. doi:10.1016/j.molstruc.2021.131098

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