Reaction Tube Layout for Electromagnetic Force Balancing

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Solution Overview

Problem

Conventional electric heating reactors face issues with deformation and malfunction due to unbalanced electromagnetic forces on reaction tubes, leading to reduced operational lifespan and increased maintenance costs.

Innovation Solution

The reactor is designed with a specific arrangement of reaction tubes, offsetting the resultant electromagnetic force to a set value or less by adjusting current directions and using shielding housings to block external forces, ensuring balanced electromagnetic stress distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If multiple reaction tubes are disposed in parallel and current is applied to heat the reactant, then heating efficiency is improved, but electromagnetic force causes stress and deformation on the reaction tubes

Engineering Contradiction:
Improveheating efficiencyVSAvoidreaction tube stress resistance
Core Design Contradiction:
Use of energy by moving objectVSStrength

Solution Approach 1:

The patent applies asymmetric current direction arrangement to reaction tubes. Specifically, adjacent reaction tubes have currents flowing in opposite directions, creating repulsive electromagnetic forces that counterbalance the attractive forces. This asymmetric current configuration transforms the harmful unbalanced electromagnetic stress into a balanced system where net force on each tube is minimized, thereby protecting tube integrity while maintaining heating efficiency

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent uses electromagnetic repulsive forces as counterbalancing forces. By arranging current directions such that adjacent tubes carry currents in opposite directions, the system generates repulsive forces that act as counterweights to the attractive electromagnetic forces. This creates a force equilibrium where the net electromagnetic stress on each reaction tube is reduced to acceptable levels, preventing deformation while preserving the heating function

Inventive Principle:
Principle #8Anti-weight (Counterweight)

2Loss of energy

If high current is applied to reaction tubes to replace natural gas heating, then energy consumption is reduced, but electromagnetic force causes continuous stress leading to malfunction

Engineering Contradiction:
Improveenergy consumptionVSAvoidoperational lifespan
Core Design Contradiction:
Loss of energyVSReliability

Solution Approach 1:

The patent inverts the conventional approach by applying opposite current directions to adjacent reaction tubes instead of the same direction. This inversion transforms the electromagnetic interaction from attractive (harmful) to repulsive (beneficial for balance). The repulsive forces generated by opposite current directions counterbalance the system's electromagnetic stress, enabling high current operation for energy efficiency while maintaining reliability through force equilibrium

Inventive Principle:
Principle #13The other way round (Inversion)

3Area of stationary object

If reaction tubes are disposed close together to reduce equipment size, then device compactness is improved, but electromagnetic force between tubes increases causing deformation

Engineering Contradiction:
Improveequipment footprintVSAvoidelectromagnetic force between tubes
Core Design Contradiction:
Area of stationary objectVSForce

Solution Approach 1:

The patent employs asymmetric current direction assignment to adjacent reaction tubes disposed in close proximity. By making current directions opposite in adjacent tubes, the system generates repulsive electromagnetic forces that scale with the inverse square of the distance. This asymmetric configuration ensures that even at small spacing, the repulsive forces balance the attractive forces, preventing deformation while maintaining compact equipment footprint

Inventive Principle:
Principle #4Asymmetry

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 enables long-term operation without malfunction, extends reaction tube replacement cycles, and reduces maintenance costs by minimizing electromagnetic deformation and stress.

Implementation Method 1

a power source configured to supply a current to the plurality of reaction tubes to heat the reactant passing through the passage

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

the plurality of reaction tubes is disposed to offset a resultant force of an electromagnetic force by the current supplied to the plurality of reaction tubes

Methodology Applied
Scientific EffectElectromagnetic force: Lorentz Force

Data Source

PatentEP4653080A1Electric heating reactor
Publication Date: 2025.11.26 LG CHEM LTD
  • EP4653080A1 patent drawingFigure 1
  • EP4653080A1 patent drawingFigure 2
  • EP4653080A1 patent drawingFigure 3

AI summary

The reactor includes: a plurality of reaction tubes, each including a passage formed therein in a length direction, through which a reactant passes; and a power source configured to supply a current to the plurality of reaction tubes to heat the reactant passing through the passage, wherein the plurality of reaction tubes are disposed to offset a resultant force of an electromagnetic force to a value less than or equal to a set value tubes by using the current supplied to the plurality of reaction tubes.