Sentence examples for bottom composition from inspiring English sources

Conventional two point control, whereby the overhead composition is controlled by reflux flow rate and bottom composition by means of steam rate, was demonstrated to be unsatisfactory.

The problem of using this concept for stripping profiles is that in order to follow the concentration profiles one needs to remove material of the bottom composition while retaining equilibrium boiling conditions.

Controlling the bottom composition of the first ideal HIDiC with the pressure elevation from the stripping section to the rectifying section helps to suppress the disturbances from the feed to the second ideal HIDiC.

As a further development, a soft sensor has been proposed to infer the bottom composition of the RD column and the resulting controller in conjunction with this soft sensor is called NE-based inferential EGMC controller.

The design of online composition prediction by using neural network will help improve product quality monitoring in an oil refinery industry by predicting the top and bottom composition of n-butane simultaneously and accurately for the column.

Finally, for columns operated at total reflux with a 'balanced feed', it is shown that if the feed is 'very' light or 'very' heavy, the transient behavior of the bottom composition sensitivity function is either always increasing or always decreasing.

Performance measures of top and bottom control loops are defined as the maximum deviation magnitudes of top and bottom compositions, respectively.

Thus, the attainable distillate and bottom compositions are described by the invariant manifolds of the singular points of the respective vapor liquid equilibria.

Then, a series of convex optimization problems are efficiently solved to give a trade-off curve representing limits of performance between the top and bottom compositions.

Main goal of the controller is to control the top and bottom compositions of a binary distillation column in presence of both structured and unstructured uncertainty.

The method of inequalities is used to design controllers for dual quality control of four binary distillation columns whose top and bottom compositions are controlled by manipulating reflux rate and steam.