The catalyst in the catalytic device is suffering severe loss – why is that?
Thread Content
The catalyst in the catalytic device is suffering severe loss – why is that?
Be more specific! Whether it occurs during the production process or at the start of operation, as well as factors such as operating conditions and adjustments – leaks that occur during production are often related to process adjustments; of course, abnormal operating conditions or equipment installation issues can also cause equipment failures, so it’s necessary to analyze each situation on its own
Sampling from the waste agent tank showed a black color, and the heating was not very stable; however, leakage in the heater can likely be ruled out. Under the microscope, the regenerator particles showed obvious signs of damage and reduction in size. A few days ago, there was a malfunction with the main smoke extractor, so the backup unit was used for supplying air
The color is black – is that a problem caused by burning? Do both the regenerator and settler experience agent leakage? Is the smoke extractor malfunction caused by the regenerator running? What is the solid content of the slurry?
Check what changes have occurred in the particle size at the three-spin inlet; the flue gas fan fault should have been resolved. Is the control of the regeneration pressure via the dual valves stable, and are there any significant fluctuations? Test and analyze whether the solid content of the slurry exceeds the limit ； Also, unstable heat extraction and unstable catalyst circulation rate must be a factor as well; are there fluctuations in the external storage density as well? The problem description should be more specific for better analysis.
The flue gas extractor has been removed; the external storage volume shows very little variation, and the solid content of the slurry is quite high
Is there information on the particle size distribution of the regenerant?
1. Is dry gas or steam used for lifting in the lift pipe? If steam lifting is being used, it is recommended to try using dry gas instead. 2. The properties of the feed material can also lead to catalyst loss
Has the original poster found the reason? What is your basis for ruling out a leak in the heat exchanger? Generally speaking, catalyst failure is caused either by poisoning that leads to the collapse of its structure, or by thermal decomposition. It is possible to determine whether there is catalyst poisoning based on the properties of the raw materials, or by assessing the catalyst’s activity; if poisoning is ruled out, then it is thermal degradation. In the vast majority of cases, heat pumps fail due to leaks in the heat exchanger.
It seems that the device on the 1st floor has been having problems all along; there have been many posts about it. This time you’ve provided less information – could you please give more details?
When I went into the regenerator to check, I found that one of the heat-exchange tubes for internal heat removal was punctured. I thought it was a case of external heat removal, but that wasn’t the case; however, the leakage wasn’t severe, and it’s barely noticeable under normal conditions