海水脱硫曝气池流场的CFD分析

海水脱硫工艺国产化需求迫在眉睫。为缩短国产化实现的时间．以计算流体力学(CFD)为工具。能以较低成本和较快的速度进行变参数、变工况测试。针对深圳西部电厂4号、5号机组海水烟气脱硫工程中曝气池的设计变化。进行了一些初步的流场研究．比较了深层、浅层曝气以及不同气流速度时海水、空气的混合情况。结果表明：深层曝气能够让气液得到更充分的混合；提高空气流量(即气泡流速)，也能大大改善气液混合。图2参6

CFD Analysis on Seawater Treatment Plant for Flue Gas Desulphurization (FGD)

Seawater FGD is one of the key projects in the 10th five year plan. Till now, the technique is still imported. It is high time to get the technique domestically available. CFD make it possible to conduct numerical tests with relatively low cost. By varying the design parameters and changing operation conditions, we can get an optimal or feasible design solution based on CFD simulation. According to the design changes on the Seawater treatment plant of 4, 5 and 6 units of Shenzhen West Power Plant, Two-phase flow of different aeration methods, including deep and shallow aeration, high and low air inlet velocity, were studied. The computational results show that deep aeration can get a better gas-liquid mix, and a higher gas flow rate can improve the mass transfer between two phases. Figs 2 and refs 6.