border:0px, font-size:14px, font-family:-apple-system, BlinkMacSystemFont, ", vertical-align:baseline, margin:0.859em 0px, color:#060607, background-color:#FFFFFF, "> 加氢反应器, 裙座, 热应力, 厚度, 温度, 内压, 轴向压应力, 轴向拉应力

The temperature gradient on the top of the hydrogenation reactor skirt is very large. In order to find the relationship between the skirt thickness and the stress on top of the skirt, stress statuses for 11 models with different structural dimensions under five load combinations were analyzed. The results demonstrate that, under the load combination internal pressure + axial tensile stress, the largest stress in the skirt decreases with the increase of the skirt thickness. Under the other four load combinations, the largest stress in the skirt increases with the increase of the skirt thickness. Under the thermal load condition, the largest stress in the skirt can be as large as three times the original one with the increase of the skirt thickness. Under the load combination thermal + internal pressure + axial compressive stress, the largest stress in the skirt can be as large as two times the original one with the increase of the skirt thickness. Under the load combination thermal + internal pressure + axial tensile stress, the largest stress in the skirt can be as large as 1.15 times the original one with the increase of the skirt thickness. Overly conservative skirt thickness cannot increase the design safety; on the contrary, it will worsen the stress condition at the joint between the skirt and the shell. Thus, adopting thinner skirts while meeting the stress check and considering the lifting conditions will not only decrease the stress level, but also maximize economic benefits.

border:0px, font-size:14px, font-family:-apple-system, BlinkMacSystemFont, ", vertical-align:baseline, margin:0.859em 0px, color:#060607, background-color:#FFFFFF, "> hydrogenation reactor, skirt, thermal stress, thickness, temperature, internal pressure, axial compressive stress, axial tensile stress