The problem of wear on the thermocouple at the outlet of the lift pipe in catalytic units
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The problem of wear on the thermocouples at the outlet of the lift pipe in your catalytic unit – do the thermocouples fail throughout the entire operation cycle of your unit? Ours break after just one month of operation. Protective shields are installed inside the instruments, but if they are too short, wear still occurs; if they are too long, the temperature readings become inaccurate. How do you solve this issue?
A guard plate is installed at the outlet of the lift pipe of the catalytic unit in the direction of catalyst flushing, and a wear-resistant lining is added on the outside of the guard plate to protect it.
Try using a thermocouple of better quality, or find a manufacturer that guarantees quality for replacement.
A protective plate is installed in the direction from which the catalyst flows; this plate has a lining on its outside. The lining generally does not get damaged, but coke forms on it, and it needs to be removed when production stops. We have two temperature displays, which are used for cross-verification
Generally, there are two temperatures for reference to each other, and there is a semi-circular sleeve in the direction of arrival
These days, a lot of our company’s purchases are won through low bids, so it’s difficult to ensure the quality
We have 2 thermocouples: one long and inserted deep, and one short and inserted shallowly
We plan to add a lining to the guard plate during the maintenance in the next cycle
We treated it with cobalt-based alloy electrodes, but it still wears out