초록 ▼

A method for controlling an additive blending process includes determining the volume of main product and blending an amount of additive thereto to obtain a predefined ratio of additive to main product. The method includes the step of creating a non-volatile record of each significant event which oc

A method for controlling an additive blending process includes determining the volume of main product and blending an amount of additive thereto to obtain a predefined ratio of additive to main product. The method includes the step of creating a non-volatile record of each significant event which occurs during blending operations and includes an extensive error checking and safety regime. A controller for accomplishing this method includes the ability to blend multiple additives simultaneously and with different types of blending systems such as piston injectors and streaming. The controller monitors status signals from the system and removes enabling signals from various components to effect a safe shut down in the event of an error condition being detected.

대표청구항 ▼

A method of controlling a blending system process, including the addition of at least two different additives, comprising the steps of: (i) defining in an additive controller desired ratios of at least two additives to a main product; (ii) providing a flow of main product; (iii) measuring the volume

A method of controlling a blending system process, including the addition of at least two different additives, comprising the steps of: (i) defining in an additive controller desired ratios of at least two additives to a main product; (ii) providing a flow of main product; (iii) measuring the volume of said main product flow and determining when a user defined volume of main product flow has occurred, said user-defined volume being less than a pre-selected volume; (iv) adding predefined amounts of each of said at least two additives to said measured main product flow to substantially achieve said desired ratio of each of said at least two additives to said main product after said user-defined amount has occurred; (v) creating a non-volatile record in said additive controller indicating the time, date, amount and type of each of said at least two additives added in step (iv); and (vi) repeating steps (iii) and (v) as necessary until the process is terminated.