Recycling of reaction heat
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Hello, fellow sailors. I recently had an idea while studying PID. Is it possible to use the heat of reaction from an exothermic reaction as a heat source for the reboiler of a distillation column? If coupling is a concern, an additional reboiler can be installed as a decoupling solution. If the control scheme is mature, wouldn’t it be possible to save a lot of steam? I wonder if any of you sea friends have come across such apps? Are there any relevant materials that can be used as a reference? Let’s exchange ideas and discuss together. Thank you!
Hello, may I ask in which processes is it applied? I looked up some information but couldn’t find any papers or patents. Do you have any recommendations? Thank you!
There are too many of them. Waste heat boilers work in this way; they are used in the ammonia synthesis process to recover the energy from the reaction gases and generate medium-pressure steam that can be used for heating in other parts of the system
There are many mature processes for utilizing this waste heat. If the reaction materials are corrosive, a graphite heat exchanger can be used to convert the waste heat into steam for utilization.
This waste heat utilization process is quite mature; I’m not aware of the specific details of your process, so I suggest you ask those with more experience in the company about it.
Theoretically, it may not be feasible; in the case of a distillation tower, the temperature of the heating medium must be higher than that of the material, while in the case of a reactor, the temperature of the cooling medium must be lower than that of the material – which presents a contradiction.
It mainly depends on whether there is a temperature difference. It’s achievable.
Heat is absorbed using hot water, and the flash vapor is then used as heating steam