The flue gas distribution in tower of wet desulfurization system with single-side air intake scheme is uneven

which affects the desulfurization efficiency. To solve this problem

an optimization scheme of the flue gas flow field inside the tower based on circumferential air intake scheme is proposed. Numerical simulation is used to study the effect of the circumferential intake scheme on the uniformity of the flue gas flow field and resistance loss in the desulfurization tower

and the optimal circumferential intake scheme is determined. The results show that

compared with the single-side air intake scheme of the conventional wet desulfurization system

the circumferential air intake scheme is beneficial to improving the uniformity of the flue gas flow field in the desulfurization tower. In all the circumferential air intake schemes

the circumferential multi-nozzle air intake scheme has the best improvement effect on the uniformity of the flue gas flow field in the tower

and the uniformity of the flow field at higher position in the tower is still good. The circumferential air intake scheme ensures the uniformity of the flue gas distribution in the tower

so that the desulfurization tower does not need to set up flow equalization equipment such as liquid holding trays

thereby further reducing the flow resistance loss of flue gas in the desulfurization tower.Under the condition of maintaining good uniformity of flow field

compared with the one-side air intake scheme with liquid holding tray

in the circumferential air intake scheme

the flow resistance loss in the desulfurization tower reduces from 1 000 Pa to 253 Pa.