IN2013KO01467A - - Google Patents

Abstract

The present invention relates to a rotary reactor for maximizing hydrogen gas generation by utilizing waste heat from molten slag. A refractory lined molten slag reservoir (1) which has a bottom opening (21) connected to a hollow entry cell (5) of the rotary reactor (R), receives molten slag (2) over temperature of 1600°C from the L.D. Convertor or from Ferrochrome production. The upward or downward movement of a stopper rod (3) is actuated by a lifting lever means (4) which controls the movement of the said rod. The reactor (R) has a cylindrical rotary reaction chamber which has part of its inner wall refractory lined (6) and the refractory lined wall is lined with special ceramic coating. The refractory lined part (6) of the rotary reaction chamber has a baffle (8) mounted on it which holds the molten slag and also has a spiral baffle (8) which sets the spiral motion of molten slag for making it thin. In addition to this there are multiple number of baffles (9) mounted at a distance to ensure continuous and smooth flow of molten as well as solidified slag (16) towards the exit cell and moves into a tank through a projected bottom (15) attached to the exit cell and dipped in water. Water or steam or water containing carbonaceous material is passed through a concentric pipe (12) which is provided with jets or nozzle means (10) along its length to spray water or steam on molten slag layer formed on the inner wall of the rotary reaction chamber. The rotary reaction chamber (11) is provided with roller support (19,20) and the rotation of the rotary reaction chamber (11) is carried out by girth gear means. The exit cell is provided with continuous hydrogen gas withdrawal provision (14) from the rotary reaction chamber (11) such that the product gas is discharged through outlet pipe (17).