Oxidation device, oxidation method, and method for producing modified fuel

Abstract

Provided is an oxidation equipment 100 for oxidizing a raw material containing at least one of carbonized coal and a torrefied biomass, the oxidation equipment 100 including: a main body unit 10 configured to form a fluidized bed 20 for oxidizing the raw material while making it flow; a gas supply unit 12 configured to supply an oxygen-containing gas at 150°C to 300°C from a lower portion of the main body unit 10 so that the raw material flows; a gas discharge unit 14 configured to discharge gas which has passed through the fluidized bed 20 from the main body unit 10; a cooling unit 18 configured to cool an oxidized product obtained by oxidizing the raw material downstream of the main body unit 10; and a delivery unit 19 configured to deliver the oxidized product from the cooling unit 18, in which the main body unit 10 has a first pressure measurement unit in a freeboard portion 22 and a second pressure measurement unit in a portion through which the fluidized bed 20 passes, and the delivery unit 19 has a delivery amount control unit 19A that controls the delivery amount of the oxidized product based on a differential pressure between a pressure measured by the first pressure measurement unit and a pressure measured by the second pressure measurement unit