不溶性硫磺生产中液硫淬冷效果的数值模拟

Numerical Simulation of Quenching Effect of Liquid Sulfur in Insoluble Sulfur Production

为研究喷嘴套管内淬冷液和液态硫磺两相流体流场中速度场、湍流强度、液态硫磺轴向与切向进料比、淬冷液和液态硫磺进料比及喷嘴出口直径对液态硫磺淬冷效果的影响,采用RNG k-ε模型和Euler双流体多相流模型模拟了液液逆流接触喷嘴套管内的两相流场,用实验验证模型计算结果。结果表明,两相液体撞击形成的"泡沫区"湍流强度高,当液态硫磺轴向进料与切向进料比为8/12,淬冷液与液态硫磺进料比为1.04,喷嘴出口直径为15 mm时,两相液体传质效果好,液态硫磺淬冷效果好,不溶性硫磺产率高。

By using RNG k-εturbulence model and Euler two-fluid multiphase model,simulation of countercurrent-crossflow liquid-liquid imping scrubber was presented and the computed results were validated via experiments.The effects of velocity field,turbulence intensity,axial and tangential feed ratio of liquid sulfur,feed ratio of quench liquid and liquid sulfur and nozzle outlet diameter on liquid sulfur quenching were simulated and analyzed.The results showed that the turbulence intensity in the foam area formed by collision of liquid of the two phase was quite high.Two-phase liquid mass transfer effect was good and liquid sulfur quench cooling effect exhibited better and insoluble sulfur yield was high when ratio of liquid sulfur axial feed and tangential feed was 8/12,quench liquid and liquid sulfur feed ratio was 1.04,nozzle outlet diameter was 15 mm.