Catalytic riser thermocouple type

1. It is common for the thermocouples in lift pipes to wear out easily; a targeted solution is to install wear-resistant protective sleeves, with no changes made to the thermocouples themselves. 2. When we first came into contact with the riser design in the late 1980s, the lifespan of the thermocouples was only a few months; various methods were tried with the thermocouples themselves as the target for improvement, but with little success. 3. Through observation and by drawing on existing technologies, a wear-resistant lining was used as a protective cover for the thermocouples. The rationale for this was that cyclone separators operate under conditions similar to those of wear, and a high-wear-resistant lining made of aluminum phosphate corundum could withstand the wear caused by high-speed catalysts, making it suitable for use with riser thermocouples. 4. The issue was resolved after adjustments; as far as I remember, no one else brought up problems with the thermocouples, and anyway we stopped paying attention to them starting in the 1990s

The senior added a layer of armor to the ordinary thermocouple, enhancing its defensive capabilities; P