Electrically heated fluidized bed reactor and processes employin

Details Electrically heated fluidized bed reactor and processes employin Electrically heated fluidized bed reactor and processes employin

1990-05-08

1992-05-19

McFarlane, Anthony

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423153, 423567R, 423DIG11, 422141, 422142, 422146, 392478, 165 1, 16510416, 165172, 23313FB, C01B 1706

Patent

active

051147009

ABSTRACT:
A method of carrying out a chemical reaction in a fluidized bed reactor is provided wherein the reactants include at least one finely sub-divided reactant having a particle size substantially smaller than that of the particles constituting the fluidized bed. The reactor includes a downcomer compartment and a riser compartment operated such that the fluidized bed particles circulate by moving down the downcomer compartment and up the riser compartment. The finely divided solid reactant is introduced, either as such, or in an agglomerated form, into the central or upper region of the fluidized bed in the downcomer compartment such that it becomes entrained in the downwardly moving fluidized bed in the downcomer compartment and moves countercurrent to the fluidizing gas towards the lower end of the riser compartment. The reaction products which may be, or include, fine divided solids are carried out of the top of the reactor from the riser compartment. The fluidized bed particles comprise electrically conductive particles which are heated by passing an electrical current therethrough. Other reactants, which may be solid or gaseous, can be added through the same or other inlets, or may be embodied in the fluidizing gas.

REFERENCES:
patent: 2584391 (1952-02-01), Lefer
patent: 3735498 (1973-05-01), Suzukawa et al.
patent: 3754993 (1973-08-01), Oguchi et al.
patent: 3915822 (1975-10-01), Veltman
British Chem. Engineering, vol. 10, No. 4, Apr. 1965, pp. 258, 260 and 262.

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