The issue of baffle placement

Baffle type: single-notch, double-notch, tubeless notched baffle, rod-type baffle； The types of baffle plates include notched, annular disk, and perforated flow types. They are usually crescent-shaped baffle plates, and can be divided into single-crescent, double-crescent, and triple-crescent types. When a low pressure drop is required, annular baffle plates can also be used, but their heat transfer performance is poor, so they are less frequently employed. The pore-mesh baffle forces the fluid to flow through the gaps between the baffle pores and the tubes, resulting in a high pressure drop; it is suitable only for clean fluids and is used less frequently. Horizontally placed baffle plates are suitable for convective heat transfer without phase change, preventing the fluid in the shell side from flowing parallel to the tube bundle and reducing liquid deposition at the bottom of the shell side. In horizontal condensers and heat exchangers used with fluids containing suspended solids or severe scaling, vertical baffle plates are generally employed. Height of the notch in the baffle: For baffles with a single notch, the opening height is 10 – 45% of the diameter; for those with two notches, the opening height is 15 – 25% of the diameter. Baffle spacing: The spacing between the baffles affects the flow direction and velocity of the fluid in the shell side, thereby influencing the heat transfer efficiency. The minimum baffle spacing is 1/5 of the shell diameter and greater than 50 mm. However, special design considerations allow for a smaller spacing. Since the baffle plates serve to support the pipes, the maximum spacing between baffle plates is usually 1/2 of the shell diameter, and this value does not exceed 0.8 times the maximum unsupported straight pipe span specified by TEMA.

The 2nd floor is already so advanced; we’ve learned from it. We’re currently working on upgrading the acid production equipment. Thank you! ! ! :victory: