Iron and calcium are poisons for residue hydrogenation catalysts; how to avoid them?
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Experts: Iron and calcium are poisons for residue hydrogenation catalysts; how can they be avoided? Was special treatment carried out at the start of operations on the rust in the storage tanks and pipelines related to the feedstock for residue hydrogenation? ； For example, Victory crude oil has a high calcium content; how can we minimize the entry of calcium into the residue hydrogenation unit? What measures are being taken in China to address this issue and ensure the long-term operation of the residue hydrogenation unit?
1. Reduce the introduction from upstream devices. 2. Use specialized deferrizing and decalcifying agents. 3. The raw material tanks must be treated to prevent corrosion, and the rust inside the pipes should be removed before starting operation.
As far as I know, calcium can be removed using atmospheric and vacuum distillation units