Catalyst addition for continuous reforming regeneration

The processes are different, and there are differences between them. It is accomplished through the valve operations related to pressure relief, charging, pressurization, replacement, and re-pressurization in the case of adding lock hoppers. UOP determines the process based on the number of cycles of the lock hoppers, while CRCS is adjustable, with a default value of 20 lock hopper cycles

Before adding the catalyst, confirm that the two quick-cut valves of the small catalyst feed hopper are closed. 1. Pour the catalyst into the open feed hopper and cover it. 2. Open the first valve below the feed hopper as well as the corresponding manual valve; the catalyst will enter the enclosed feed hopper due to gravity. 3. Close the valve that was just opened, as well as the manual valve. 4. Fill the closed feed hopper with low-pressure nitrogen to raise the pressure, ensuring it is not lower than the pressure in the regenerator. 5. Open the quick-cut valve under the closed feed hopper and the corresponding manual valve (if any). The catalyst flows into the lower hopper of the regenerator due to gravity and pressure difference. 6. It is possible to determine whether the majority of the catalyst has been added to the system by tapping the feed hopper. (That’s how we do it; if we’re not confident enough, we increase the pressure in the sealed hopper.) After 7, close the newly opened quick-cut valve and release the pressure.

CYCLEMAX – it’s not clear whether it’s I or II

Oh, may I ask that during the pressurization and unloading steps of the closed hopper, the catalyst inside the regenerator should be stationary and full, right? At the same time, the level of the material in the separation hopper in front of the regenerator increases ； Then, during the pressure reduction and feeding step, the catalyst in the regenerator moves downward, while the level of material in the separation hopper drops, right?

During pressurized unloading, the lockhopper causes the low-pressure area to turn into a high-pressure area; the pressure then becomes equal to that of the regenerator. The catalyst moves downward through the catalyst transfer pipe into the regenerator’s buffer zone, resulting in an increase in the regenerator’s level – although it may not reach full capacity – and the catalyst continues to flow downward inside it. During the pressure-reduction feeding step, the lock hopper changes from a high-pressure area to a low-pressure area; due to the reverse pressure difference, the material level in the lock hopper increases while the material level in the separation hopper decreases. The catalyst moves downward in the regenerator.

This is the IFP process, right? In the UOP regenerator, the catalyst moves downward in pulses during the circulation in the closed hopper. During the pressurization and unloading steps, there are flutes in the separation zone of the hopper, which help to reduce the impact of these pulses. That’s why IFP claims that its method represents true continuous regeneration

It’s to digest UOP, and then some changes are made

What we have here is something in between different approaches; the UOP process involves a leaching step within the separation hopper, and there is also leaching before reduction. To avoid spending a lot of money on patents, we eliminated the leaching step before reduction. But the catalyst still came from UOP; when their representatives arrived, they just said “hehe”. .

This is technological innovation: lol