Parameter optimization on experimental study to reduce ammonia escape in CO₂ absorption by ammonia scrubbing

In order to research ammonia escape in CO₂ absorption by ammonia scrubbing, ammonia escape was studied in CO₂ absorption process using the bubbling reactor in different conditions as gas flow rate, CO₂ ratio, absorbent temperature and ammonia concentration and quantity of escaped ammonia was measured by chemical titration. The results indicated that, the amount of ammonia escape can be around 20% of original amount in 90 min and the escaped amount will increase with the rise of gas flow rate, absorbent temperature, concentration of ammonia while decrease as CO₂ ratio goes up. Through the analysis of the law of ammonia escape, at the same time, combined with ammonia escape and the influence of the relationship between the CO₂ absorption efficiency, reducing ammonia escape working condition parameter optimization is given.