What should be considered when designing a waste heat boiler?
Thread Content
I want to design a thermosiphonic reactor with a temperature of 160°C and a pressure of 8 kilograms. The reaction is a highly exothermic one, and the heat of reaction is intended to be used to generate low-pressure steam (3 kg, 143°C). The height of the reaction vessel is 12 m, and the diameter is 3 m. It is planned to use 12m-long heat exchange tubes that pass directly through the upper and lower end caps of the reactor. There are not many such tubes; a circle of DN50 heat exchange tubes is arranged at the point where the reactor’s diameter is 2m. About 4 tons of steam can be produced in one hour. A steam drum is installed outside the reaction vessel to maintain a stable liquid level in the drum. The heat exchange tube is 12 meters long, with an external pressure of 8 kilograms and an internal pressure of 3 kilograms. I’m not sure whether the tube will vibrate intensely What measures should be considered during design to counteract stress?
You’d better illustrate it. Many marine enthusiasts have never used a thermosiphonic reactor
The poster can install a conventional flue-type waste heat boiler in the flue behind the reactor vessel to heat the reactant feed, which yields the best benefits in terms of heat recovery. Moreover, with 12-meter-long heat exchange tubes, it is very difficult to address thermal expansion and thermal stress, both in terms of the equipment itself and the piping.