Chemical Reactor Heat Exchange Circuit with Interleaved Channels

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Solution Overview

Problem

Current devices for chemical reactors lack effective means for heat exchange, leading to inefficient reaction processes and thermal runaway issues, and are difficult to produce industrially due to complex geometries and material limitations.

Innovation Solution

A device with a mixing circuit and an interleaved heat exchange circuit, where the heat exchange circuit is closely integrated with the mixing circuit, allowing for efficient thermal management and production through a welding-diffusion process using superposed plates and hot isostatic pressing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a complex three-dimensional structure with bends and bifurcations is used for intimate mixing, then mixing efficiency is improved, but manufacturing difficulty increases and industrial production becomes difficult

Engineering Contradiction:
Improvemixing efficiencyVSAvoidmanufacturing difficulty
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The device is divided into multiple superposed plates, each containing portions of the mixing circuit and heat exchange circuit. This segmentation allows complex three-dimensional structures to be manufactured as simpler two-dimensional plate patterns that are then assembled together, making industrial production feasible while maintaining efficient mixing characteristics.

Inventive Principle:
Principle #1Segmentation

2Temperature

If heat exchange circuit is arranged close to mixing circuit for efficient thermal management, then heat exchange efficiency is improved, but structural complexity increases

Engineering Contradiction:
Improveheat exchange efficiencyVSAvoidstructural complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The mixing circuit and heat exchange circuit are merged into a single integrated device structure where the heat exchange circuit is arranged in close proximity to the mixing circuit. Multiple functions (mixing and heat exchange) are combined in one device, improving thermal management efficiency while avoiding the complexity of separate coupled systems.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The heat exchange circuit is arranged in a different spatial dimension (transverse direction) relative to the mixing circuit flow direction. This dimensional arrangement allows close thermal coupling without interfering with the mixing flow paths, achieving efficient heat exchange while maintaining structural clarity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Object-affected harmful factors

If traditional cooling methods with coolant circulation around the device are used, then thermal management is achieved, but cooling effectiveness is insufficient and thermal runaway may occur

Engineering Contradiction:
Improvethermal runaway preventionVSAvoidcooling effectiveness
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The heat exchange circuit is nested within or interleaved with the mixing circuit structure, with heat exchange channels positioned between mixing channels. This nested arrangement allows the coolant to be in close proximity to the reacting fluids, dramatically improving cooling effectiveness and preventing thermal runaway compared to external cooling methods.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 configuration ensures intimate mixing of chemical reagents while enabling optimal heat exchange, preventing thermal runaway and allowing for industrial-scale production of complex reactor structures with improved mechanical properties.

Implementation Method 1

a second circuit called the 'heat exchange circuit' arranged as close as possible to the mixing circuit... ensuring an exchange effective thermal with the outside

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The production method provides for implementing a welding-diffusion step, preferably by hot isostatic pressing

Methodology Applied
Scientific EffectDiffusion welding: Diffusion Welding

Data Source

PatentEP2523753B1Device forming a chemical reactor with improved efficiency, comprising a heat exchanging circuit
Publication Date: 2014.06.25 COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
  • EP2523753B1 patent drawingFigure 1~2
  • EP2523753B1 patent drawingFigure 3~4
  • EP2523753B1 patent drawingFigure 5A

AI summary

The invention relates to a device forming a chemical reactor comprising a first circuit for forming a chemical reactor, said first circuit comprising a plurality of channels (10) in which at least two chemical substances circulate so as to react with each other, said channels (10) having a three-dimensional structure comprising elbows and forks imposing changes of direction on the fluid, and a second heat exchanging circuit comprising a plurality of channels (36) in which a heat transfer fluid circulates as closely as possible to the channels (10) wherein the reaction is taking place.