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US 5,332,900 AGranted
On-line corrosivity monitor for petroleum products
AssigneeExxon Research & Engineering Co.
InventorsHorst Witzke, Joshua Varon
Life of this patent
Estimating the term…
Abstract
A method and system for monitoring the presence of a corrosive constituent in a petroleum product. [The invention detects the reflected] Reflected radiation is detected from a metal standard in the petroleum product which indicates the presence of the corrosivity constituent.
Claims12
A method for on-line monitoring the corrosivity of a petroleum feedstream for the presence of a corrosive constituent comprising:
- (a) irradiating a metal that reacts with said corrosive constituent, said metal installed in said feedstream;
- (b) detecting the reflected radiation from said metal;
- (c) converting said reflected radiation to an electrical signal indicative of the magnitude of the reflected radiation;
- (d) repeating steps (a), (b), and (c) to give the change in reflectivity over a period of time;
- (e) determining a change in said electrical signal and relating it to the corrosivity of said feedstream of said metal from said reflectivity over a period of time.
2 more elements
A system for determining the presence of a corrosive constituent in a petroleum product comprising:
- (a) a housing having valves for admitting and releasing a sample of said petroleum feedstream;
- (b) a source of visible or infra-red light;
- (c) a metal that reacts with said corrosive constituent;
- (d) means for irradiating said metal with said light;
- (e) means for detecting the reflected light from said metal over a period of time;
- (f) means for converting said reflected light into an electrical signal over a period of time, the change of which is related to the corrosivity of said petroleum product.
3 more elements
Dependencies are inferred from the claim text.