Fluidized bed system
AssigneeMetallgesellschaft Aktiengesellschaft
InventorsHans Beisswenger, Ronald Knoche, Wolfgang Frank
Life of this patent
Estimating the term…
Abstract
Disclosed is a fluidized bed system which includes a fluidized bed reactor, a solids separator and a return line and serves to carry out exothermic processes in a circulating fluidized bed for large thermal capacities. Secondary gas is introduced into the reactor on a level which is at least 1 meter above the bottom of the reactor. The fluidized bed system is provided with one or more displacing bodies, which cover 40 to 75% of the bottom surface area of the fluidized bed reactor and have a maximum height that is equal to one-half of the height of the reactor to ensure a satisfactory transverse mixing of the oxygen-containing secondary gas and fuel in reactors having large dimensions.
Claims7
A fluidized bed system comprising:
- a fluidized bed reactor, said reactor having a bottom and means for exhausting a gas from said reactor;
- means for introducing fluidizing gas into the bottom of said reactor;
- means for introducing a secondary gas into the reactor at a level of at least one meter above the bottom of the reactor but not in excess of 30% of the reactor height;
- means for introducing fuel into said reactor at a level between the means for introducing fluidizing and secondary gas into said reactor;
- a solids separator to remove solids from exhaust gas from said reactor;
- recycle means for returning the removed solids to said reactor;
- at least one displacing body to cover 40 to 75% of the bottom surface of said reactor, said least one displacing body having a height not in excess of one-half the reactor height.
Dependencies are inferred from the claim text.