How can a temperature controller be fooled? Reboiler, condenser, and pressure controls: which loops work and which misbehave. How dead pockets in vapour overhead lines interfere with controls. Control systems that did not work.
The 10 most common causes of distillation malfunctions: what trouble should we look for and prevent? Points of transition feeds, draws, tower base : why these are some of the worst tower bottlenecks: how diagnosed and remedied. Instrument issues at the tower base: what to watch out for. Liquid outlets: choking in sidedraw rundown lines and how it restricts tower capacity.
SHORT PATH DISTILLATION
Why must self-venting flow be assured in the presence of entrained vapour? Siphon formation. Kettle and once-through thermosiphon reboilers: how they bottleneck towers.
- Distillation - Definition, Detailed Process, Types, Uses;
- Distillation - Definition, Detailed Process, Types, Uses.
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These operating experiences will be scattered throughout to illustrate the key principles and to distinguish good from bad practices. Contact Email courses icheme.
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At Fluor he designs, revamps and advises on distillation processes, equipment and controls for the chemical, petrochemical and oil industries. Overview Led by noted distillation expert, Henry Kister, this popular course gives comprehensive coverage of distillation technology with particular emphasis on the problems that occur and how to solve them. Who will benefit Engineering and supervisory personnel who are involved in: operating troubleshooting de-bottlenecking designing starting up distillation processes. Course outline NB: Programme is provisional and may be subject to change.
Avoiding fractionation pitfalls Vapour-liquid equilibrium VLE : key concepts and simulation traps. Troubleshooting distillation simulations Does your simulation reflect the real world? Tray hydraulics and limits Visualisation of vapour-liquid dispersions on trays, flooding, entrainment, weeping, dumping.
Troubleshooting tray towers Flooding and foaming symptoms: high dPs, reduced bottoms, others. Troubleshooting packed towers Rules of thumb for flood pressure drop and packing efficiency. De-bottlenecking State-of-the-art trays and packings: strengths and weaknesses. Distillation control Assembling control loops into an overall scheme: what works, which is better, what causes instability, and what impairs efficiency.
Avoiding tower malfunctions The 10 most common causes of distillation malfunctions: what trouble should we look for and prevent? Simple distillation is a procedure by which two liquids with different boiling points can be separated.
Vapor Pressure vs. Composition Phase Diagrams
Simple distillation the procedure outlined below can be used effectively to separate liquids that have at least fifty degrees difference in their boiling points. As the liquid being distilled is heated, the vapors that form will be richest in the component of the mixture that boils at the lowest temperature. As distillation progresses, the concentration of the lowest boiling component will steadily decrease.
Eventually the temperature within the apparatus will begin to change; a pure compound is no longer being distilled.
The temperature will continue to increase until the boiling point of the next-lowest-boiling compound is approached. When the temperature again stabilizes, another pure fraction of the distillate can be collected. This fraction of distillate will be primarily the compound that boils at the second lowest temperature.
Charentaise distillation method « L’encyclopédie du Cognac
This process can be repeated until all the fractions of the original mixture have been separated. Figure 1. Distillation apparatus.
A distillation flask with a thermometer is placed in a heating mantle and is connected to a condenser. Figure 2. The tubes on the condenser are attached to a water source, with the water flowing in the low end and flowing out the high end of the condenser. The condensed vapor drips into the collection receiver. At the same time, the original mixture will contain more of the less volatile material. Distillation columns are designed to achieve this separation efficiently.
To achieve this improvement, a thorough understanding of distillation principles and how distillation systems are designed is essential.
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