Controlling acid concentration in a hydrocarbon process

Details Controlling acid concentration in a hydrocarbon process Controlling acid concentration in a hydrocarbon process

1995-06-07

1997-10-28

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Condition responsive control

436150, 436171, 436173, G01N 2100

Patent

active

056817495

ABSTRACT:
A method is disclosed for determining the acid concentration in acid-water-hydrocarbon (acid-soluble oil) solutions using near-infrared spectrophotometry. The use of a multivariate analysis such as Partial Least Squares algorithm enables one to predict simultaneously the concentrations of water and acid-soluble oil in the process acids from the near-infrared spectra. Although the preferred embodiment is directed to sulfuric and hydrofluoric acids used for alkylation, the method is also applicable to processes using other organic or inorganic acids containing hydrogen bound to either carbon, oxygen or nitrogen. Advantages are elimination of acid waste, hazardous acid handling, and better alkylate product quality.

REFERENCES:
patent: 3607087 (1971-09-01), Graham
patent: 3653835 (1972-04-01), Brandel

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