Short Path Distillation Head Minimizing Reflux

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Solution Overview

Problem

Existing distillation methods face challenges in efficiently separating compounds with close boiling points and maintaining constant temperature, leading to vapor re-condensation and reflux issues, especially when dealing with small amounts of starting material.

Innovation Solution

A distillation head design with a headspace chamber and extended inlet port that directs vaporous distilland into the chamber, where it condenses on a surface and collects as distillate, preventing reflux and allowing uncondensed gases to escape through a large outlet port.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional distillation head with a change in direction is used, then vapor can be directed to the condenser, but vapor re-condenses and refluxes back into the boiling flask

Engineering Contradiction:

Improvedistillation efficiencyVSAvoidvapor re-condensation

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The invention extracts and eliminates the problematic direction change space from the distillation head design. By providing a straight-through vapor path without requiring the vapor to change direction within the head, the design removes the location where vapor re-condensation and reflux occur, thereby preventing substance loss.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of designing the distillation head to change vapor direction (traditional approach), the invention inverts the approach by maintaining a straight vapor path and allowing the condenser to be positioned to receive vapor directly. This reversal of the vapor path design eliminates the reflux problem.

Inventive Principle:

Principle #13The other way round (Inversion)

2Manufacturing precision

If the vapor path is lengthened to allow direction changes, then vapor can reach the condenser, but temperature varies and separation efficiency decreases

Engineering Contradiction:

Improveseparation efficiencyVSAvoidvapor path length

Core Design Contradiction:

Manufacturing precisionVSLength of moving object

Solution Approach 1:

The invention extracts the unnecessary direction change section from the vapor path. By eliminating the space required for vapor to change direction within the distillation head, the vapor path is shortened to only the essential length needed to reach the condenser, maintaining temperature stability and separation efficiency.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention changes the geometric parameter of the vapor path from a long path with direction changes to a short straight path. This parameter change maintains the vapor temperature more consistently, improving separation efficiency for compounds with close boiling points.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If a compact distillation head is used, then space is saved, but vapor may re-condense before reaching the condenser

Engineering Contradiction:

Improvedistillation head sizeVSAvoidvapor delivery reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

Instead of compacting the distillation head in a way that requires vapor to change direction (traditional compact design), the invention inverts the approach by designing a compact head with a straight-through vapor path. The condenser is positioned to receive vapor directly, maintaining reliability while achieving compactness.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The invention merges the functions of the distillation head and condenser positioning to achieve compactness. By integrating the straight vapor path design with the condenser orientation, the system achieves space savings without compromising vapor delivery reliability.

Inventive Principle:

Principle #5Merging (Combining)

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 minimizes reflux and enhances separation efficiency by shortening the vapor path and maintaining a constant temperature, effectively preventing vapor re-condensation and improving the distillation process for compounds with close boiling points.

Implementation Method 1

where it condenses on a surface and collects as distillate

Methodology Applied

Scientific EffectCondensation: Condensation

Implementation Method 2

maintaining a constant temperature, effectively preventing vapor re-condensation

Methodology Applied

Scientific EffectCooling: Cooling

Data Source

PatentUS11612830B2Short path distillation head

Publication Date: 2023.03.28 ACE MASCH DESIGN INC

AI summary

A distillation head for distilling a distillate from a vaporous distilland. The distillation head including a headspace chamber within a condenser surface. An inlet port having an extended portion below and to but not into the headspace, to receive the vaporous distilland and pass it into the headspace. A collection surface below the headspace to collect the distillate. And an outlet port, to receive the distillate from the collection surface and pass it out of the distillation head.