The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Mar. 24, 1997
Douglas D Weerstra, Arvada, CO (US);
Mesa Laboratories, Inc., Lakewood, CO (US);
Abstract
A system for measuring acid concentration in an alkylation process by repeatedly measuring the density, viscosity or velocity of sound through a sample over time as volatile organic compounds (VOCs) are allowed to escape and the sample stratifies. A partial vacuum can be used to accelerate dissipation of light VOCs from the sample. A processor applies a predetermined function to a series of these sound velocity measurements to compute the acid concentration in the sample. The function can be determined by statistical regression against sound velocity measurements taken from samples having known acid concentrations. The system can be used either to generate a read-out to facilitate manual control of the alkylation process, or to automatically regulate the acid feed rate to maintain a desired acid concentration.