Degree of depletion of methyl diethanolamine (absorbent)
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In the Claus process, the concentration of the lean liquid at the outlet of the lean liquid filter is around 1.1. The concentrations of the lean liquid at the inlet and outlet of the heat exchanger for exchanging heat between lean and rich liquids are 3.3/3.4 respectively. Please help analyze the reasons for this.
Is the regeneration tower operating properly? First, it is necessary to confirm whether the regeneration of the rich liquid is proceeding properly; this can be determined indirectly by examining parameters such as the temperatures and pressures in the regeneration tower. If there is cross-flow between the rich and lean liquid heat exchangers, then the circulation rate of the amine solution will be abnormal, and the liquid levels in the bottom of the regeneration tower as well as in the reboiler will also be affected