초록 ▼

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

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.

대표청구항 ▼

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 abo

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.