Patent ID: 7273950

Claim:
A method for performing a continuous liquid-gas highly exothermic chemical reaction by separately feeding into a stirred liquid medium a gaseous reactant and a liquid reaction mixture, containing at least a liquid reactant, to yield a solid reaction product, comprising the steps of: a) utilizing a reactor comprised of a hollow vessel having a cylindrical inner wall with a plurality of vertical baffles extending inwardly and spaced around the inner periphery of the inner wall, an agitation element within said hollow vessel, said agitation element comprising a vertical rotatable shaft, said rotable shaft having a plurality of impellers spaced vertically therealong with each impeller having a plurality of blades with upper and lower edges; b) establishing a liquid medium in said reactor to a level within said reactor such that said impellers are immersed in said liquid medium; and c) feeding said liquid reaction mixture into said liquid medium at a feeding point in a zone located adjacent the second lowermost impeller, said zone being: i) vertically defined by an upper limit defined by a line perpendicular to said shaft and passing through about half the height of the blades of the second lowermost impeller and by a lower limit defined by a line perpendicular to said shaft and located below the lower edge of the blades of the second lowermost impeller at about ⅓ the distance from the lower tip of the blades of the second lowermost impeller to the blades of the lowermost impeller, measured downwards from said lower edge of the blades of the second lowermost impeller; and ii) radially defined by an outer circle line located at about 0.1 times the vessel diameter measured from the tip of the blades of the second lowermost impeller towards the inner wall of said reactor, and an inner circle line located at about ⅔ of the radius of the blades of the second lowermost impeller measured from said shaft towards the outer tip of the blades of the second lowermost impeller; d) separately feeding said gaseous reactant into said reactor.