Considering that it is easily for desulfurization tower with large manholes to have deflection deformation under the wind load

the software made strength analysis and modal analysis.The desulfurization tower simplified model was established with the finite element software ANSYS.The tower body gravity load and wind load in different heights was calculated based on actual working conditions.With the sparse matrix equation solver

the analysis was able to solve the structural feature and modal feature of desulfurization tower

and obtain the stress field

natural frequency and vibration mode.The research results show that large manholes in the desulfurization tower can weaken the strength

and it is needed to set the strength reinforcement in the open area.The former steps of desulfurization tower owe small natural vibration frequency and large vibration period

which can represent the whole dynamic feature of tower body.In the actual work

the work frequency of desulfurization tower should avoid the natural vibration frequency to ensure the tower stability.