Regarding iron ion content
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To monitor the corrosion of a system, the iron ion concentration is also typically measured; an elevated level of iron ions indicates severe corrosion. So what other adverse effects can excessive iron ions have? This post was last edited by caohaibin on 2009-4-14 09:11]
The iron ion content reflects the severity of corrosion; it is a consequence rather than a cause, so it does not lead to further corrosion
Support, LZ’s question is a bit off, haha. Is LZ trying to ask what other adverse effects excessive iron ions can cause?
The level of iron ions reflects the severity of corrosion; generally, refineries require that the iron ion level be less than 3 ppm. However, there are exceptions – some refineries keep the iron ion level below 5 ppm (this is determined based on the properties of the crude oil). Previously, refineries used a one-extraction and three-injection process, but now they generally adopt a one-extraction and one-injection approach (with some also using amine injection). As the properties of crude oil become worse, corrosion problems become increasingly severe.
Iron ions are generally an analysis parameter for water removal from reflux tanks in refineries, reflecting the corrosion condition of the relevant pipelines or equipment.
It is recommended that you consult on anti-corrosion techniques to determine how to effectively prevent corrosion, reduce it, and lower the iron ion content
Our system uses the injection of corrosion inhibitors to prevent corrosion in pipes and equipment; the effectiveness of this approach is determined by testing the iron ion content in the acidic water within the gasoline tanks
An excessively high level of iron ions not only reflects the degree of corrosion in the equipment of this system, but more importantly, it has an adverse effect on the catalysts in subsequent processing units such as hydrogenation and reforming.
Excessive iron ions can also dissolve into the oil, which is harmful to the catalysts in the downstream processing units; it can cause clogging of the bed layers, increase pressure drops, and lead to catalyst poisoning. During hydrogenation, it reacts with sulfides to form iron sulfide, and it is prone to spontaneous combustion during discharge, which is detrimental to both the catalysts and the equipment.
I’ve learned that too high levels of iron ions are not acceptable.
Iron ions are first colored, and secondly, they tend to hydrolyze to form colloids, precipitates, or compounds with elements such as sulfur, thereby affecting conductivity.
The high content of organic iron has a significant impact on the catalysts in downstream units; it deposits on the catalysts, leading to an increase in pressure drop across the catalyst bed and a reduction in catalyst activity
If high levels of iron ions are detected, the problem should be addressed promptly rather than continuing to explore its hazards
Excess iron ion content can damage the performance of the downstream hydrogenation catalysts, and in severe cases it can cause blockages in the catalyst bed
High levels of iron ions are a result of severe corrosion; if tests show high iron ion levels, the pipeline corrosion must be severe. High iron ion concentrations have an impact on the catalysts in subsequent processing equipment
It indicates that the anti-corrosion protection of your device is inadequate; depending on the production conditions, consider replacing the corrosion inhibitor