Abrasion in the stripping section
Thread Content
Last May, our device revealed a close relationship between the dry gas volume and the pressure difference between the two vessels. The greater the pressure difference, the greater the dry gas volume. At first, I thought to suspect the stripping section, but I wasn’t sure. After another power outage, it was found during fluidization that the inventory in the stripping section had decreased, while the temperature in that section rose extremely rapidly. It’s been confirmed. Inspection revealed a wear hole of 0.04 square meters in the stripping section. I was terrified and broke into a cold sweat. Let me share these phenomena with everyone to help prevent accidents. I would also like to ask experts for their suggestions regarding the amount of steam used in the stripping section. I would like to ask the experts: are there any precautions to take when constructing the stripping section? Are there any ways to reduce wear in this section? This post was last edited by chengkang on 2009-3-24 22:00]
Isn’t there a wear-resistant lining on the outside of the stripping section? How could it get worn through? Has it fallen off? The control of the stripping steam volume was discussed in Linderila’s post titled “Issues Regarding the Stripping Steam Volume in Catalytic Reaction Positions”; you can take a look at it.
First, it is necessary to determine the type of your installation – whether it is coaxial or not. If it is coaxial, attention must first be paid to the differential pressure between the two units; this is very important. If this differential pressure decreases while the amount of dry gas increases, then samples should be taken. If the nitrogen content in these samples is high, it indicates a leak. In coaxial systems, the regenerator riser does not have any lining, and uneven flow in the stripping section can easily lead to wear and damage. During maintenance, attention should first be paid to the verticality of the regenerator riser, as well as to the concentricity of the umbrella-shaped cover in the stripping section and whether there is any tilting. Tilting in this area can easily cause wear and damage to the stripping section. When shutting down the system, it is essential to ensure that the pressure in the settler is higher than that in the regenerator, in order to prevent main air from entering – otherwise, it can be very dangerous