A multi-stage dense phase semi-dry desulphurisation reactor, comprising an inlet flue (1), an outlet flue (2), a plurality of U-shaped reactors (3), a plurality of desulphurisation agent adding assemblies (4), and a plurality of ash discharging valves (5), the plurality of U-shaped reactors (3) each being provided with a U-shaped flue gas channel (31), each U-shaped flue gas channel (31) being provided with an air inlet (311) and an air outlet (312), the plurality of U-shaped reactors (3) being arranged closely adjacently in sequence between the inlet flue (1) and the outlet flue (2), such that the U-shaped flue gas channels (31) are serially connected in sequence between the inlet flue (1) and the outlet flue (2); the plurality of desulphurisation agent adding assemblies (4) are respectively correspondingly arranged on the plurality of U-shaped reactors (3) and are correspondingly adjacent to the air inlet (311) of the plurality of U-shaped flue gas channels (31) in order to add desulphurisation agent into each U-shaped flue gas channel (31); and the plurality of ash discharging valves (5) are respectively correspondingly arranged on the plurality of U-shaped reactors (3) and are respectively correspondingly positioned at the bottommost position at the bottom of the plurality of U-shaped reactors (3). The present application achieves the implementation of multi-stage desulphurisation reactions in the same reactor, and has a compact structural layout and small floor occupation area.
展开▼
