Absorbing tower used for flue gas desulphurization

The invention discloses an absorbing tower used for flue gas desulphurization. The absorbing tower comprises a spray tower body, an air inlet pipe is fixedly connected with a sidewall of the spray tower body, a first L-shaped pipe is fixedly connected with the sidewall of the spray tower body at the upper side of the air inlet pipe, an output terminal of the first L-shaped pipe is extended into the spray tower body and is fixedly connected with a U-shaped pipe, a first pump body is fixedly connected with an input end of the first L-shaped pipe, a second L-shaped pipe is fixedly connected withthe sidewall of the spray tower body at the upper side of the first L-shaped pipe, the output end of the second L-shaped pipe is extended into the spray tower body, a second pump body is fixedly connected with an input end of the second L-shaped pipe, a cycle mechanism connected with the first pump body and the second pump body are respectively installed at a bottom wall of the spray tower body, and two exhaust pipes are