Solvent composition for absorption of carbon dioxide from gaseous mixture, comprises alkyl polyamine e.g. diethylpropylamine, tert.alkanol amine e.g. methyl diethanolamine, structure modified amine compound, aqueous medium such as demineralized water and mineral carbonate e.g. potassium carbonate
	RAMAKUMAR S S V; KAPUR G S; SAXENA D; ARORA A K; LOPINTI K; GARAPATI S R K
	2023-07-27
专利权人	INDIAN OIL CORP LTD (INOI-C)
申请日期	2023-07-27
专利号	IN202321050724-A
成果简介	NOVELTY - The solvent composition for absorption of carbon dioxide from a gaseous mixture comprises: an alkyl polyamine; a tert.alkanol amine; a structure modified amine compound (I); an aqueous medium; and optionally mineral carbonate. USE - Solvent composition for absorption of carbon dioxide from a gaseous mixture. ADVANTAGE - The solvent composition has superior physico-chemical properties with respect to aqueous monoethanolamine such as lower viscosity, density, higher acid dissociation constants, higher boiling point and lower melting point. The solvent composition is highly efficient having high absorption capacity and a superior rate of carbon dioxide absorption for removal of carbon dioxide from flue gas mixtures at various partial pressure levels of carbon dioxide. The developed carbon dioxide-philic solvent composition can separate carbon dioxide in the flue gas at 5-80 vol.% with a capture efficiency of greater than 90%. The regeneration temperatures required for the developed solvent composition to strip carbon dioxide is 100-110°C. It reduces regeneration temperature by 10-15 °C to the conventional solvents. Thus, heat stable salts will be minimized due to the thermal degradation of solvent. Also, reboiler duty and steam consumption will be decreased, and the operating cost of the process will be reduced. It has minimum solvent make-up requirement, low degradation and evaporation, low amine emissions to the atmosphere and corrosion of the equipment. The developed solvent composition has low solvent regeneration energy, higher net cyclic loading and lower solvent circulation rates compared to widely used solvent aqueous monoethanolamine. As the developed solvent system has higher absorption kinetics and lower circulation rates the height of the absorption column and area requirement for the heat exchanger can be reduced. Also, due to a decrease in column height, the pressure drop in the absorber reduces. The energy required for auxiliary equipment like rich/lean amine pumps and blowers will be low as the solvent composition has low viscosity, density and low-pressure drop in a column. The developed carbon dioxide-philic solvent composition is cost-effective, energy-efficient and requires lower capital and operating costs. DETAILED DESCRIPTION - The solvent composition for absorption of carbon dioxide from a gaseous mixture comprises: an alkyl polyamine; a tert.alkanol amine; a structure modified amine compound of formula (R-CH(OH)-CH2-NH-(CH2)n-NH-(CH2)n-NH-CH2-CH(OH)-R) (I); an aqueous medium; and optionally mineral carbonate. (R = H or CH3; and n = 1-4). An INDEPENDENT CLAIM is included for the structure modified amine compound (I).
IPC 分类号	B01D-053/14
国家	印度
专业领域	化学化工
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/21087
专题	中国科学院新疆生态与地理研究所
作者单位	INDIAN OIL CORP LTD (INOI-C)
推荐引用方式 GB/T 7714	RAMAKUMAR S S V,KAPUR G S,SAXENA D,et al. Solvent composition for absorption of carbon dioxide from gaseous mixture, comprises alkyl polyamine e.g. diethylpropylamine, tert.alkanol amine e.g. methyl diethanolamine, structure modified amine compound, aqueous medium such as demineralized water and mineral carbonate e.g. potassium carbonate. IN202321050724-A[P]. 2023.

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