3D simulation of sintering flue gas desulfurization and denitration in a bubbling gas absorbing tower

作者：Zhou, Guanwen; Zhong, Wenqi^*; Zhou, Yingqian; Wang, Jie; Wang, Tiancai

来源：Powder Technology, 2017, 314: 412-426.

DOI：10.1016/j.powtec.2016.09.051

• Desulfurization and denitration
• Bubbling gas absorbing tower
• Numerical simulation
• Eulerian-Eulerian approach
• Two-film theory model

A full-scale three-dimensional Eulerian-Eulerian numerical model was established considering absorbing reactions in which the two-film theory model was adopted to describe the absorption process of SO2 and NOx. The established model was firstly verified by the industrial operation data of a 2 x 220 m(2) sintering flue gas desulfurization tower. Then, using the model, numerical simulations of simultaneous desulfurization and denitration process were carried out based on three different methods including spraying-inside tower oxidation absorption of the composited NaClO2/NaClO/Ca(OH)(2) slurry, oxidation absorption of the composited NaClO2/NaClO/Ca(OH)(2) slurry and bubble absorption of Ca(OH)(2) slurry. Numerical results revealed that the first method, spraying-inside tower oxidation absorption of the composited NaClO2/NaClO/Ca(OH)(2) slurry had the best performance on denitration without influencing on the desulfurization efficiency. The result was then further verified by an industrial scale test on a 2 x 220 m(2) sintering flue gas desulfurization tower.

• 出版日期2017-6-1
• 单位东南大学