Biogas upgrading with various single and blended amines solutions: Capacities and kinetics

Han，Siyu1; Meng，Yuan1; Aihemaiti，Aikelaimu2; Gao，Yuchen1; Ju，Tongyao1; Xiang，Honglin1; Jiang，Jianguo1

2022-08-15

10.1016/j.energy.2022.124195

ENERGY   影响因子和分区

0360-5442

1873-6785

Biogas is an important renewable energy and biogas upgrading which separate CH/CO to increase the heating value of biogas is necessary for its utilization. Amine scrubbing is a promising biogas upgrading technology. In this study, we applied various single and blended amines solutions for biogas upgrading and reconsidered the evaluation method by comparing the equilibrium CO absorption capacity (q) and optimal CO absorption capacity under 90 vol% or 95 vol% pure CH requirement (q, q). Three apparent kinetic models and Fourier-transform infrared spectroscopy (FT-IR) were applied to study the kinetics. The results showed that, compared with the q, the new indicator q and q could better reveal the difference and improvements between various amines solutions and be more accordance with the real situation of biogas upgrading. The q increased from 0.15 to 0.82–1.70 mol/kg after adding other amines with methyldiethanolamine (MDEA), but q was almost the same. For kinetics, the fitting results of Avrami model are the best among the three models. FT-IR analysis before and after absorption showed CO formed different groups with different amine molecules. This study provided a new perspective and method on evaluation of amine scrubbing for biogas upgrading, contributing to future research and industrial application.

Amines solutions Biogas upgrading CO2 absorption capacity FT-IR analysis Kinetic model

SCI ; EI

英语

其他

Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07202005];

Thermodynamics ; Energy & Fuels

Thermodynamics ; Energy & Fuels

WOS:000808006600007

PERGAMON-ELSEVIER SCIENCE LTD

20222012112523

Amines ; Biogas ; Fourier transform infrared spectroscopy ; Industrial research ; Kinetic parameters ; Kinetic theory

Gas Fuels:522 ; Fluid Flow, General:631.1 ; Chemistry:801 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Agricultural Wastes:821.5 ; Engineering Research:901.3 ; Industrial Engineering:912.1 ; Classical Physics; Quantum Theory; Relativity:931

ENGINEERING

2-s2.0-85129927693

Scopus

1.School of Environment,Tsinghua University,Beijing,100084,China
2.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Han，Siyu,Meng，Yuan,Aihemaiti，Aikelaimu,et al. Biogas upgrading with various single and blended amines solutions: Capacities and kinetics[J]. ENERGY,2022,253.

Han，Siyu.,Meng，Yuan.,Aihemaiti，Aikelaimu.,Gao，Yuchen.,Ju，Tongyao.,...&Jiang，Jianguo.(2022).Biogas upgrading with various single and blended amines solutions: Capacities and kinetics.ENERGY,253.

Han，Siyu,et al."Biogas upgrading with various single and blended amines solutions: Capacities and kinetics".ENERGY 253(2022).