The deposition of elemental sulfur in gathering pipeline will cause the problems of clogging and corro-sion, and sulfur deposition is more prone to occur in the bend.For this reason, the method of numerical simulation was used to study the sulfur deposition in horizontal bend.Firstly, the Reynolds stress model was used to simulate the flow field.Secondly, the Lagrange particle trajectory model was used to track the sulfur particles.Then the fac-tors affecting the deposition rate of sulfur particles in bend were studied.The results showed that the negative pres-sure zone and low velocity zone would appear on the inner wall of bend.The gas velocity and curvature ratio would affect the flow field.The deposition rate of sulfur particles in bend would increase with the increase of velocity, par-ticle size and curvature ratio.Sulfur particle deposition was the result by the combined effect of gravity and centrifu-gal force, and the centrifugal force was an important cause of the increased deposition rate in bend.%元素硫在集输管道中沉积会引起堵塞和腐蚀问题，而弯管是集输管道中较易出现硫沉积的部位之一。为此，采用数值模拟的方法研究水平弯管内的硫沉积问题，首先利用雷诺应力模型对流场进行模拟，其次采用Lagrange颗粒轨道模型对硫颗粒进行模拟追踪，研究不同因素对硫颗粒在弯管中沉积率的影响。结果表明：弯管内壁会出现负压区和低速区，气流速度和弯曲比会对流场产生影响；硫颗粒在弯管中的沉积率随流速、粒径和弯曲比的增大而增大；硫颗粒沉积是重力和离心力共同作用的结果，其中离心力是导致弯管中沉积率增大的重要原因。
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