Question: Is there any reactor design that uses infrared heating (fixed-bed/fluidized-bed)?
Thread Content
There is an existing experimental design based on gas-solid phase reactions, with the goal of enabling the reaction to occur more effectively on the surface of the solid. The solid has a granular, porous structure, and the gaseous reactant decomposes easily when heated; therefore, it is desirable for the reactor to have cold walls, so as to prevent the gaseous reactant from decomposing against the reactor walls. This also helps to reduce the temperature of the gas phase, thereby inhibiting the decomposition of the gaseous reactant in that phase. Thus, the ideal situation is that the solid particles generate heat on their own. However, the solid particles themselves are non-polar substances, so microwaves cannot be used to heat them, and no pressure is required for the reaction. Now we are considering whether a glass reactor could be used with infrared heating. But the reaction requires a temperature of around 500°C; it’s not clear whether infrared heating can meet this requirement. The solid particles behave like ideal blackbodies, meaning they should have a strong ability to absorb radiation, but no literature on reactors designed in this way has been found. I would like to ask if there are such reactor designs available, or if there are other methods that could achieve this level of heating
Why don’t you give it a try? It worked successfully; you were the first to do it ； If the attempt fails, you have blazed a path for everyone, and we are grateful to you.
I can’t use these words to convince my boss
Is it possible to fix the solid particles, heat them directly, and then use gas injection to reach the surface of the solids for a reaction, with the gas being reused?
The last product I need is the particles for the bed layer; in that case, the reaction will be very uneven, right?
The reaction must take place on the surface or within the pores of a solid catalyst, and it is also acceptable to design the reactor with a cold-wall structure. You have requested that the solid catalyst be capable of generating heat on its own; we need to consider where this heat comes from (Microwaves are not the only method.) You haven’t explained the reaction process in terms of the reaction mechanism. Based on your description, the reaction process is likely to be an endothermic one. (It is also possible that the reaction process is exothermic, while the regeneration process is endothermic; these are strong exothermic and strong… endothermic reactions, with the amount of heat absorbed being **greater than the amount of heat released.) (1) The gas can be heated directly (before it comes into contact with the catalyst). (2) Electric heating can be used (with adjustable and controllable temperature). (3) One can continue to look for self-heating carriers. (The literature mentions it, but I can’t remember.) (4) We can keep looking for heating technologies. (Petroleum has a very special heating method; it makes use of electromagnetic principles, though I can’t remember the details exactly.)