SO₃ Sulfonation Plant:Multi-tube falling film sulfonation (sulfation) reactor is used in this plant. The organic feed materials include DDB, LAB, fatty alcohols, laurel ether,olefins etc. Two control alternatives are available: conventional or computer controlled. The plant is composed of following units:Air drying, Sulfur melting and dosing, Sulfur burning and SO3 generation , Sulfonation/sulfationNeutralization, Exhaust gas treatment Capacity: 500 kg/h to 3,000 kg/h.