Catalyst screening issue in catalytic devices
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As stated in the title: The catalyst discharged from the regenerator needs to be transferred to another container and screened in order to remove any gel masses or lining materials present in it. This facilitates the smooth operation of adding large amounts of catalyst during startup or in emergency situations, thereby saving time. During the screening process, the filter screen tends to get clogged. When cleaning the filter screen, catalyst may be sprayed out due to issues such as leaks in the bottom isolation valve of the tank; dust is harmful to the health of the operators, and there is also significant loss of catalyst. Question: Let’s discuss this – 1. Is there a better way for screening catalysts? 2. What types of valves are generally used in catalyst systems?
We haven’t been screened. If the lining isn’t damaged, there’s no need to sieve it. Stainless steel valves with purge ports are generally used on the additive and scavenger pipelines; new types of valves with wear-resistant linings can also be employed.
Even after removing it from the regenerator, there is no guarantee that no foreign objects are present. Not screening – does it have no impact on catalyst filling? The lining is undamaged. Is there any glue there? We use new ball valves with wear-resistant linings (equipped with purge holes) in our critical areas, and there is leakage. The others are stainless steel gate valves with purge holes.
There shouldn’t be any coke lumps in the regenerator. Coke cakes are generally in the reaction system. :lol
1. Increasing the size of the inverted tank filter can reduce the frequency of cleaning the access hole. 2. I’m guessing it might be possible to use an open-type filtration system: transfer the substance from one tank to another, from tank A to tank B; then install a vacuum pump in tank B. Create a funnel similar to a feed hopper and place it under tank A, covering it with canvas to prevent dust from spreading. Connect this funnel to tank B using hoses. Lift the canvas to clean out the debris. I thought about it, but I haven’t tried it. 3. Gate valves are currently used for catalyst lines. It is speculated that an eccentric rotary valve might work better.
The atmosphere seemed a bit awkward! ! ! :In theory, gel blocks should not appear in the regenerator (the regenerator is meant for burning; how could there be gel blocks there?). Yet they do exist in practice. During the process of removing material from the regenerator, valve sticking, poor flow of material, and pipeline blockages can occur (from time to time, there are knocking sounds in the pipelines, similar to those caused by stones passing through). Due to the numerous hot spots, one might think of delamination of the lining. Blockages also occur during small-scale feeding, tank pouring, and screening, and the foreign objects removed are gel clumps.
1. In favor! ! ! 2. Control the feeding speed from tank A to the hopper properly; with proper coordination, this should be achievable. It’s similar to using a catalyst tank to collect fresh agents, making it easy to remove debris. 3. If the bottom isolation valve works well, removing the flange to clean the filter screen provides better sealing.
This idea can be found in the compilation post for the \"Creative Ideas\" event under the category of energy-saving innovations in the petrochemical industry: http://bbs.hcbbs.com/thread-1669271-1-1.html (Source: Haichuan Network)