There is a translation related to the distribution of thermocouples in reactors; I can’t understand it. Please help
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These thermocouples are arranged along the axes of the reactor to provide adequate vertical coverage. The required radial coverage is achieved by placing the thermocouples at 90° intervals on a circle whose area is approximately 50% of the reactor’s cross-sectional area. I’m not sure how the arrangement works, especially regarding the part about being 90° apart on a circle of that size.
Circularly distributed around this area at 90° intervals
I still don’t understand. Does it refer to the distribution of the four vertices of the square within the circular cross-section of the reactor?
The thermocouples are also imported from abroad – it’s absolutely crazy! !
If business can’t be done, what’s the point of discussing it?
Flexible thermocouples, 4 at 360 degrees
The temperature in the reactor can be distributed in this way, which is called \"staggered distribution of points\", 1. If there are two probes per layer (and each probe may have multiple temperature measurement points at different depths). First layer: 0, 180 degrees ； Second layer: 90, 270 degrees ； Third layer: 0, 180 degrees ； And so on, with a 90-degree shift. 2. If there are three probes per layer. First layer: 0, 120, 240 degrees ； Second layer: 60, 180, 300 degrees ； Third layer: 120, 240, 0 degrees ； And so on, with a 60-degree offset. @jiaguoyun
Thank you, I’ve learned something. Is the same thing true for horizontal reactions as well?
Vertical reactors are arranged in this way, and this is related to the properties of the catalyst. It is generally assumed that the temperature of the catalyst at the same level is similar, which means they will age (or experience temperature spikes) simultaneously. This method of placing points at different angles allows for consideration of the temperature along the \"axial\" direction; for two planes, this means one point is placed at 0, 90, 180, and 270 degrees respectively. Of course, the height between the two layers also needs to be taken into consideration; the distance should not be too large, as this facilitates observing temperature changes in the area and understanding variations in the catalyst’s performance. I haven’t encountered horizontal reactors; I guess it has to do with the direction in which the gas flows through the reaction bed (up and down, or left and right). @jiaguoyun