Ring Baffle Distillation Column Third Phase Separation
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Solution Overview
Problem
Conventional methods for separating a third phase component from hydrocarbon feedstock in distillation columns are ineffective at the bottom portion, where turbulent flows prevent proper separation, leading to interference with the furnace and other components.
Innovation Solution
A distillation column design featuring a ring baffle and return conduit that directs heated hydrocarbon fluid along the inner circumference, combined with a horizontal plate to minimize interaction between liquid and vapor phases, facilitating the separation of the third phase component at the bottom of the column.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gravity settling or coalescing technology is used to separate the third phase component, then the separation can be achieved under calm conditions, but the separation becomes ineffective at the bottom portion of the distillation column where vapor and liquid flows are highly turbulent
Solution Approach 1:
A settling chamber is introduced as an intermediary space between the turbulent distillation column and the heating assembly. This chamber provides a transition zone where turbulent flows can calm down before entering the heating assembly, enabling effective gravity settling of the third phase component. The settling chamber acts as a mediator that transforms the turbulent flow condition into a calm flow condition suitable for separation.
Solution Approach 2:
The bottom portion of the distillation column is segmented into distinct functional zones: a turbulent reaction zone above, a settling chamber in the middle, and a protected heating assembly zone below. This segmentation allows each zone to perform its specific function - the upper zone handles turbulent distillation, the middle zone provides calm settling, and the lower zone receives protected feed without turbulence or accumulated third phase components.
2Productivity
If the third phase component is not separated, then the distillation column can continue operating without interruption, but the presence of the third phase component interferes with the proper operation of the furnace or reboiler as well as other components
Solution Approach 1:
The settling chamber performs preliminary separation of the third phase component before the hydrocarbon feedstock enters the heating assembly. By removing catalyst particles and other third phase components in advance, the system prevents potential failures and operational issues in the heating assembly and other downstream components, ensuring reliable continuous operation.
3Reliability
If a settling chamber is added to reduce turbulence and enable separation, then the third phase component can be effectively removed, but the device complexity increases
Solution Approach 1:
The settling chamber is designed to perform multiple functions within a single structural element: it serves as a turbulence-damping chamber, a gravity settling separator, and a protective barrier for the heating assembly. By combining these functions into one integrated component, the design achieves effective separation without proportionally increasing overall system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces turbulence and enhances the separation of the third phase component, allowing it to settle and be removed, thereby improving the operation of the distillation column by preventing interference with the heating assembly.
Implementation Method 1
Conventionally, the third phase component can be separated from the hydrocarbon compounds by gravity settling
Implementation Method 2
Applying heat to the hydrocarbon feedstock, the distillation column separates the hydrocarbon compounds of the feedstock into a vapor phase and a liquid phase
Implementation Method 3
a ring baffle located within the cylindrical body and above the return conduit... can distribute, along a bottom surface of the ring baffle, the heated hydrocarbon fluid across the distillation column
Implementation Method 4
A vortex breaker can be located in a top opening of the stand pipe and the horizontal plate can be supported by the vortex breaker
Implementation Method 5
a drain line proximate the bottom of the distillation column that directs a third phase component of the hydrocarbon fluid from the bottom of the distillation column to a settling pot
Data Source
AI summary
A phase separation assembly includes a stand pipe configured to be located at a bottom of a distillation column, the stand pipe for directing a liquid phase of a hydrocarbon fluid through a bottom outlet to a heating assembly; a return conduit configured to direct heated hydrocarbon fluid from the heating assembly into the distillation column; a ring baffle configured to be located within the distillation column above the return conduit; and a horizontal plate configured to be disposed above the stand pipe. The ring baffle directs the heated hydrocarbon fluid around the inner circumferential wall of the distillation column so that vapor and liquid phases can separate. Weir features on the ring baffle can facilitate separation of vapor and liquid flows of the hydrocarbon.