Evaluation of tray column operation in absorption of hydrogen sulfide by diethanolamine solution in industrial scale

In the present investigation, the operation of an industrial tray column was evaluated in absorption of hydrogen sulfide by diethanolamine and the effects of processing factors on separation was discussed in detail. In the first step, the absorption process was simulated and the results were compared with the industrial data to validate the calculated method. The role of column pressure, amine concentration, amine inlet temperature and gas flow rate were evaluated on absorption. Although, the increase in column pressure causes to achieve the stream in which the hydrogen sulfide concentration is lower than 0.01 %, the outlet amine temperature increases, negligibly. The rise in amine inlet temperature couldn’t effectively change the operation but amine concentration should be controlled correctly to reach appropriate concentration.