2634.     ---------------.  [PETROLEUM ENGINEER.]  New Sulfur-Recovery Process.  Vol. 23, No. 2, 1951, p. C44, C47.

        Girdler S-recovery process from H₂S gases is based on a modification of the original Claus process.  Reaction is carried out in 2 stages:

            (1)            H₂S+3/2O₂→SO₂+H₂O;

            (2)            2H₂S+SO₂→3S+2H₂O.

The process is described by aid of a flow diagram.  Up to 95% of the S in H₂S-carrying gas may be recovered.  If used in combination with a Girbotol gas purification plant, the utility requirements of the S-recovery plant are minor.