Abstract
Large-scale deployment of post-combustion CO2 chemical capture, absorption by chemical solvents have been demonstrated to be possible. One of the remaining concerns is the leakage of amines, which may result in the damage to human health and the environment. Literature revealed that amine slip increases in the presence of aerosol particles in the flue gas. However, systematic investigation of the mechanism is still absent. The objective of this work is to set-up an experiment to measure the effect of aerosol on monoethanolamine (MEA) slip in different absorbers, a packed bed (PB) and a rotating packed bed (RPB). In this research, the aerosol was generated by a generator TSI-3076. A particle size analyzer TSI model 3330 was used to analyze the particle size distribution and particle counts in the aerosol created. The FTIR instrument Gasmet DX-4000 was calibrated to measure MEA concentrations in the outlet gas stream. If no aerosol was introduced into the inlet gas, MEA emissions are negligible in both absorbers. If sucrose aerosol were present in the packed bed absorber, MEA emission is about 400~800ppmv. If sulfuric acid aerosol were present in the packed bed absorber, MEA emission is about 1100~1400ppmv. An aerosol with sulfuric acid as nuclei aerosol causes more MEA emission than aerosol with sucrose as nuclei. The MEA emission increased with L/G ratio increasing in a packed bed, the trend is just opposite in RPB.