Note: 0.25 grains of H2 S equals 4.125 parts per million.

A sour gas of the composition given in the table is to be treated by using a split stream MEA solution of a 25% by weight strength. The flow of sour gas to the contactor is 150 MMSCFD. The total solution circulation is such that 2.0 moles of amine are circulated/mole of acid gas. Approximately 90% of the circulation is through the bulk removal section. This solution is regenerated such that the H2S concentration in the semi lean amine that has been regenerated is 100 grains per gallon. The clean-up amine is to be regenerated to 10 grains of H2S/U.S. gallon. Determine the steam required in lbs/hr by the plant for the regeneration of the solution