The invention provides a novel
tower plate-structure rectifying
tower for
maleic anhydride refining. The novel
tower plate-structure rectifying tower for
maleic anhydride refining comprises a tower body, a float valve tower plate unit and a
sieve tower plate unit, the bottom of the tower body is provided with a tower bottom heater, the top of the tower body is provided with a tower top outlet, the tower top outlet is fixedly connected to a condenser by a
pipe, the float valve tower plate unit and the
sieve tower plate unit are arranged between two side inner walls of the tower body, the float valve tower plate unit comprises several float valve tower plates, the
sieve tower plate unit comprises several sieve tower plates, the novel tower plate-structure rectifying tower is used in
maleic anhydride rectification purification, the float valve tower plates and eight sieve tower plates are arranged in the tower body. Through reasonable design of the number and positions of the float valve tower plates and the sieve tower plates and
current limiting effects of the float valve tower plates,
gas flux is partly reduced and a steam use amount is reduced. The novel tower plate-structure rectifying tower effectively utilizes the
advantage of a high vertical sieve plate production capacity and improves production efficiency.