Analyze the reasons for the problems occurring in the operation of the catalytic reactor
Thread Content
Could everyone please help analyze the reasons for the problems occurring in the operation of the catalytic reactor? My reactor has two heating tubes, installed vertically; the one on the left serves as the vaporization section, while the one on the right functions as the catalytic reaction tube. Now, a simulation experiment is conducted using water as the material to confirm whether the equipment can operate properly. First experiment: No quartz sand was placed in either of the two tubes; the experiment was conducted with empty tubes, and a syringe pump was used to deliver the liquid. The temperature of the electric furnace was set at 300°C; water entered the first tube where it was heated and vaporized. In this experiment, water vapor could be observed in the second tube. (The two tubes are connected to each other.) In the second experiment, quartz sand was placed in the two tubes; however, there were water droplets at the flange at the inlet end of the vaporization section on the left side. This meant that the water entering the system was not being vaporized. It was suspected that the seal around the flange was poor, so the existing gasket was replaced and the experiment was repeated. No water droplets were observed this time, but steam also did not emerge from the second outlet throughout the entire experiment. Let’s analyze the reasons behind this issue This post was last edited by 4507 on 2009-3-16 20:19]
I’ve watched it several times, but I still don’t understand what the process actually is. Could the original poster send a schematic diagram? I’m sure the experts on Haichuan can help you!
The difference between the two times is that quartz sand was added the second time. Should we consider flow rate and heat transfer? 1. Where is the electric furnace located, and can it ensure that the temperature of the entire reactor remains stable at around 300 degrees after quartz sand is filled in? 2. After filling with quartz sand, the resistance inside the reactor increases, the flow velocity decreases, the residence time increases, and the likelihood of the vaporized steam further condensing rises.
After filling with quartz sand, it is possible that too much sand is used, resulting in high resistance and an increase in pressure inside the reactor; this reduces the amount of water that vaporizes. Moreover, the high resistance prevents steam from reaching the outlet of the right tube. It is recommended that the poster try reducing the amount of quartz sand used. This post was last edited by beileim1 on 2009-3-17 09:36.]
I conducted further experiments, and it turned out that the seal at the flange was not proper; when there was obstruction, water would leak out from that poorly sealed area. Once that issue was fixed, everything worked fine.