| 摘要 |
PURPOSE:To enhance the heat insulation effect of the heat insulating structure of a high temperature side tube sheet of a vertical shell and tube type heat exchanger and to simply remove it at the time of repairing. CONSTITUTION:A heat insulating layer is formed by covering the upper surface side of a high temperature side tube sheet 2 for supporting heat transfer tubes 1 with particulate heat insulator 6 such as gravel, crushed stone, ceramic ball, fire resistant heat insulation ball, etc. |
