Control of gasoline manufacture
US4251870A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1980 |
| Grant date | Feb 17, 1981 |
| Priority date | — |
| Expiry date | Jan 31, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2829
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for predicting the octane number of a substantially olefin-free gasoline or gasoline component. A sample of reformed gasoline is analyzed by means of a gas chromatograph in order to ascertain the presence and amount of its constituents. Signals representing both the identities of the various constituents and their percent volume are applied to a computer which includes means for associating the constituents with predetermined groups and combining the relative volumes of the constituents of each group. Subsequent apparatus assigns predetermined coefficients to each of the groups, after which the volumes of each group are multiplied by the group coefficient. The resulting products are then summed to produce a first expression A. A second expression B comprises the summed differences between the product of the volume and octane number, and the product of the volume, octane number and coefficient, for each group. The second expression is then combined according to the formulation B/(1-A) to produce an estimation of the octane number of the sample. The octane number so derived is applied to control a process for the manufacture of gasoline or a gasoline component in modificatio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.