| 摘要 |
An on-site tailored fuel blending process and apparatus is provided for optimizing the blend ratio of a No. 2 fuel oil component and a No. 1 fuel oil component to obtain a fuel mixture which will not freeze, i.e., form wax particles, above a predetermined temperature. Radiant energy, e.g., in the infrared range, from an energy source is transmitted through the sample, and a change in wax crystal concentration of the sample is detected by sensing a predetermined intensity level transmitted by the energy source after the radiant energy therefrom has passed through the sample, or by sensing a predetermined rate of change in the intensity level of the radiant energy after transmission through the sample. The temperature of the sample is measured when the predetermined intensity level or abrupt change thereof is detected. A percentage amount of the No. 1 fuel oil component to be mixed with the No. 2 fuel oil component is determined based on the measured temperature and on stored data representing respective amounts of the fuels to be mixed to obtain a blend which will not freeze above respective fluidity control temperatures. A signal representing this percentage amount is fed to a blending unit, which automatically blends the fuel component in accordance with the indicated percentages.
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