Fluidized bed reactor and method for recovering active metal of lithium secondary battery utilizing same
A fluidized bed reactor according to an embodiment of the present disclosure includes a reactor body, and a dispersion plate coupled to a bottom portion of the reactor body. The dispersion plate may include a base plate and injection columns protruding from a top surface of the base plate. The injection columns include first injection columns arranged at a central portion of the dispersion plate, and second injection columns arranged at a peripheral portion of the dispersion plate. The second injection column has a greater height than a height of the first injection column. A reactive gas is uniformly injected to a wall surface of the reactor through the dispersion plate, thereby increasing a recovery ratio for an active metal of a lithium secondary battery.
1 . A fluidized bed reactor, comprising:
a reactor body; and
a dispersion plate coupled to a bottom portion of the reactor body, the dispersion plate comprising a base plate and injection columns protruding from a top surface of the base plate;
wherein the injection columns comprise:
first injection columns arranged at a central portion of the dispersion plate; and
second injection columns arranged at a peripheral portion of the dispersion plate, the second injection columns having a greater height than a height of the first injection columns,
wherein the first injection column comprises a first column body extending from the top surface of the base plate, a first cap portion covering an upper portion of the first column body, and a first injection hole penetrating through the first column body, and
the second injection column comprises a second column body extending from the top surface of the base plate, a second cap portion covering an upper portion of the second column body, and a second injection hole penetrating through the second column body,
wherein the second injection hole comprises an upper injection hole and a lower injection hole, and a height of the upper injection hole is greater than a height of the first injection hole,
wherein the upper injection hole is inclined toward the base plate, and the lower injection hole is inclined from the base plate toward a top portion of the reactor body.
2 . The fluidized bed reactor of claim 1 , wherein the injection columns are arranged in a constant pitch or in a constant grid shape.
3 . The fluidized bed reactor of claim 1 , further comprising a reactive gas flow path for supplying a reactive gas from a portion of the reactor body under the base plate.