Microwave Catalyst Reactor for Small-Scale Hydrogen Generation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Small-scale hydrogen generation faces economic limitations due to heat management issues, as large-scale steam methane reforming processes do not scale down favorably, requiring innovative solutions for effective heat integration.

Innovation Solution

A microwave reactor apparatus that includes a microwave generator, a microwave-stimulated conversion zone, and a material converter, where microwave energy is used to heat catalyst material, converting methane and steam into gaseous hydrogen and carbon monoxide, with the material converter further processing the products to produce pressurized hydrogen.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If large-scale steam methane reforming processes are used, then hydrogen production efficiency is improved, but heat management complexity and system integration requirements increase

Engineering Contradiction:

Improvehydrogen production efficiencyVSAvoidheat management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces conventional thermal heating systems with microwave heating technology. The microwave generator (2450 MHz) directly heats the catalyst material through dielectric heating, eliminating the need for complex external heat management systems, heat exchangers, and temperature control mechanisms required in traditional steam methane reforming processes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The microwave field serves multiple functions simultaneously: it heats the catalyst material, provides energy for the steam methane reforming reaction, and maintains reaction temperature without requiring separate heating systems. The conversion zone (18) integrates reaction, heating, and product formation in a single multi-functional space.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If small-scale reactor designs are implemented, then system simplicity is improved, but economic viability and heat management effectiveness deteriorate

Engineering Contradiction:

Improvesystem simplicityVSAvoideconomic viability

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent changes the heating parameter from conventional thermal conduction/convection to microwave dielectric heating. This parameter change enables efficient small-scale operation by providing direct volumetric heating of the catalyst material, achieving high temperatures and high hydrogen production rates in a compact converter (34) without the heat management problems that plague small-scale traditional reactors.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If microwave energy is used to heat catalyst material, then heating efficiency and hydrogen production are improved, but energy input requirements increase

Engineering Contradiction:

Improveheating efficiencyVSAvoidmicrowave energy input

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The catalyst material serves as both the reaction medium and the heating target. The microwave field directly heats the catalyst particles themselves, which then conduct heat to the reactants. This self-heating approach eliminates heat transfer losses and achieves high heating efficiency with effective energy utilization in the conversion zone (18).

Inventive Principle:

Principle #25Self-service

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

The apparatus efficiently generates gaseous molecular hydrogen at a small scale, overcoming heat management challenges and achieving high hydrogen purity and pressure, thus addressing the economic limitations of scaling down large-scale processes.

Implementation Method 1

the microwave generator is generating microwave energy with effect that a microwave field is established within the microwave-stimulated conversion zone and dielectric heating of the catalyst material is effectuated

Methodology Applied

Scientific EffectDielectric heating: Dielectric Heating

Implementation Method 2

catalyst material, disposed within the microwave-stimulated conversion zone, is heated... with effect that a reactive process is catalyzed by the heated catalyst material, with effect that a microwave-stimulated conversion product material is produced, wherein the microwave-stimulated conversion product material includes gaseous molecular hydrogen (H2) and gaseous carbon monoxide (CO)

Methodology Applied

Scientific EffectCatalysis: Catalysis

Data Source

PatentUS20240001328A1Systems, methods, and apparatuses for converting material with microwave energy

Publication Date: 2024.01.04 NUIONIC TECHNOLOGIES (CANADA) INC

AI summary

There is provided an apparatus comprising a microwave generator, for heating catalyst material, and an electrochemical pump. A reactive process is catalyzed by the heated catalyst material to produce reaction products, and some of the reaction products are recovered via the electrochemical pump.