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Chen Q, Peng X, Xue J, Li J, Pan C. Identification and Quantification of Organic Contaminants and Evaluation of Their Effects on Amine Foaming in the Natural Gas Sweetening Industry. ACS OMEGA 2022; 7:46421-46427. [PMID: 36570220 PMCID: PMC9774364 DOI: 10.1021/acsomega.2c05132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Contamination is a leading cause of corrosion, foaming, and amine-absorption capacity limitation, predominantly foaming. There is currently an urgent need to identify the sources of amine foaming and eliminate them or reduce their impacts. Gas chromatography-mass spectrometry (GC-MS) and a sample pretreatment method were developed to identify and quantify the organic contaminants. Linear hydrocarbons (C12-C22), long-chain carboxylic acids and esters, alcohol ethoxylates, and benzene derivatives were detected, characterized, and quantified in amine solutions. Furthermore, the effects of the contaminant concentrations on foaming behavior were also investigated by adding those contaminants. The results reveal that the main issue of foaming is due to the presence of unsaturated fatty acids and alcohol ethoxylates, even with a small amount of 10 ppm, whereas benzene derivatives like methylpyridine, quinoline, methyl naphthalene, benzyl alcohol, octahydroacridine, and linear hydrocarbons have little effect on amine foaming, even with an amount up to 2000 ppm. Therefore, it is necessary to monitor the existence and content of these surface-active contaminants.
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Affiliation(s)
- Qingmei Chen
- Research
Institute of Natural Gas Technology, PetroChina
Southwest Oil & Gasfield Company, Chengdu610213, China
- National
Energy R&D Center of High Sulfur Gas Exploitation, Chengdu610213, China
- High
Sulfur Gas Exploitation Pilot Test Center, CNPC, Chengdu610213, China
| | - Xiujun Peng
- Research
Institute of Natural Gas Technology, PetroChina
Southwest Oil & Gasfield Company, Chengdu610213, China
- National
Energy R&D Center of High Sulfur Gas Exploitation, Chengdu610213, China
- High
Sulfur Gas Exploitation Pilot Test Center, CNPC, Chengdu610213, China
| | - Jingwen Xue
- Research
Institute of Natural Gas Technology, PetroChina
Southwest Oil & Gasfield Company, Chengdu610213, China
- National
Energy R&D Center of High Sulfur Gas Exploitation, Chengdu610213, China
- High
Sulfur Gas Exploitation Pilot Test Center, CNPC, Chengdu610213, China
| | - Jinjin Li
- Research
Institute of Natural Gas Technology, PetroChina
Southwest Oil & Gasfield Company, Chengdu610213, China
- National
Energy R&D Center of High Sulfur Gas Exploitation, Chengdu610213, China
- High
Sulfur Gas Exploitation Pilot Test Center, CNPC, Chengdu610213, China
| | - Chunfeng Pan
- PetroChina
Southwest Oil & Gasfield Company, Chengdu610213, China
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Edalatpour A, Abbasi M, Riahi S, Sanaye Mozaffari Sabet N, Tavakoli O. Investigation of foaming tendency of aqueous mixture of MDEA+IPAE for carbon dioxide absorption. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rostami A, Tavan Y. Pros and cons of implementing new hybrid amine solution for simultaneous removal of mercaptan and acid gas. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Li YT, Yue D, Wang B, Ren HY. Degradation of MDEA in aqueous solution in the thermally activated persulfate system. ENVIRONMENTAL TECHNOLOGY 2017; 38:730-736. [PMID: 27454407 DOI: 10.1080/09593330.2016.1210239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The feasibility of methyldiethanolamine (MDEA) degradation in thermally activated PS system was evaluated. Effects of the PS concentration, pH, activation temperature and reaction time on MDEA degradation were investigated. Simultaneity, the thermodynamic analysis and degradation process were also performed. Several findings were made in this study including the following: the degradation rates of MDEA in thermally activated PS systems were higher than other systems. MDEA could be readily degraded at 40°C with a PS concentration of 25.2 mM, the process of MDEA degradation was accelerated by higher PS dose and reaction temperature, and MDEA degradation and PS consumption followed the pseudo-first-order kinetic model. The thermodynamic analysis showed that the activation process followed an endothermic path of the positive value of [Formula: see text] and spontaneous with the negative value of [Formula: see text], high temperature was favorable to the degradation of MDEA with the apparent activation energy of 87.11 KJ/mol. Combined FT-IR with GC-MS analysis techniques, MDEA could be oxidative degraded after the C-N bond broken to small molecules of organic acids, alcohols or nitro compounds until oxidized to CO2 and H2O. In conclusion, the thermally activated PS process is a promising option for degrading MDEA effluent liquor.
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Affiliation(s)
- Yong-Tao Li
- a College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu , People's Republic of China
| | - Dong Yue
- a College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu , People's Republic of China
| | - Bing Wang
- a College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu , People's Republic of China
| | - Hong-Yang Ren
- a College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu , People's Republic of China
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