Controllable desulfurization tower for tail gas pretreatment

The utility model provides a controllable desulfurizing tower for tail gas pretreatment, which relates to the field of desulfurizing towers and comprises an acidic spraying chamber and an alkaline spraying chamber, the acidic spraying chamber is fixedly connected with the alkaline spraying chamber, a detection chamber is arranged on the side surface of the alkaline spraying chamber, a communicating pipe is arranged between the detection chamber and the alkaline spraying chamber, and the communicating pipe is communicated with the acidic spraying chamber. The alkaline spraying chamber is communicated with the detection chamber through a communicating pipe, and a tower body is arranged on the side surface of the acid spraying chamber. The waste gas discharged by the desulfurization tower usually contains acidic gas and alkaline gas, and in the tail gas pretreatment process, a large amount of acidic gas and alkaline gas can be removed through acid-base neutralization, so that the waste gas can be treated in a ra