초록 ▼

Additives are blended with a stream of liquid, for example of diesel fuel, by injecting at least two different additive compositions into the stream, and adjusting the rates of injection and the relative proportions of the injected additive compositions. This enables the consumption of additives to

Additives are blended with a stream of liquid, for example of diesel fuel, by injecting at least two different additive compositions into the stream, and adjusting the rates of injection and the relative proportions of the injected additive compositions. This enables the consumption of additives to be minimized while enabling desired fuel characteristics to be maintained despite variations in the characteristics of the untreated liquid. The rates of injection may be adjusted by an automatic controller (32) in response to signals from sensors (28, 30) representing characteristics of the liquid before and after treatment.

대표청구항 ▼

[ We claim:] [1.] A system for blending a plurality of different additive compositions with a main stream of oleaginous liquid to provide a resulting blended liquid, the system comprising:a plurality of containers for the different additive compositions;common injection means to simultaneously injec

[ We claim:] [1.] A system for blending a plurality of different additive compositions with a main stream of oleaginous liquid to provide a resulting blended liquid, the system comprising:a plurality of containers for the different additive compositions;common injection means to simultaneously inject into the main stream of oleaginous liquid at least two of the different additive compositions from the containers;means to adjust, during the injection operation, the rates of injection and the relative proportions of the at least two different additive compositions which are to be injected;control means to operate the adjustment means in accordance with:input data representing measured or measured and computed characteristics of the main stream of oleaginous liquid prior to the injection of the at least two different additive compositions,input data representing a desired cold filter plugging point specification of the resulting blended liquid,a database relating to the effect of the different additive compositions, andinput data from a sensor means for measuring the cold filter plugging point of the blended liquid after injection of the at least two different additive compositions and for providing signals to the control means representing the measured cold filter plugging point of the blended liquid as input data to the control means.