Thermal Reactor System with Density-Based Product Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The direct thermal cracking of methane to produce hydrogen results in solid carbon byproducts that accumulate and plug reactors, limiting the operational lifetime and economic viability of the process.
Innovation Solution
A reactor system utilizing a heat transfer fluid with greater density than the reaction products, allowing the products to float and be efficiently removed, combined with heat exchangers that reduce contact between the products and reactor walls and facilitate thermal energy recovery, preventing plugging and enhancing process control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If direct thermal cracking of methane is used to produce hydrogen, then hydrogen production efficiency is improved and CO2 emissions are reduced, but solid carbon byproducts accumulate and plug the reactor, limiting operational lifetime
Solution Approach 1:
The patent extracts and removes solid carbon byproducts from the reaction zone continuously through a separate outlet, preventing their accumulation that would otherwise plug the reactor and limit operational lifetime, thereby maintaining high hydrogen production efficiency over extended periods
Solution Approach 2:
The patent introduces a fluidized bed as an intermediary medium to facilitate the separation of solid carbon from the gaseous reaction products. The fluidized bed allows continuous removal of solid carbon through fluid dynamics, acting as a mediator between the cracking reaction and product separation, thus extending reactor operational lifetime without compromising hydrogen production efficiency
2Productivity
If solid carbon byproducts are produced during methane cracking, then hydrogen production is achieved, but the solid byproducts deposit on reactor walls and block flow paths, increasing device complexity for removal
Solution Approach 1:
The patent segments the reactor into distinct functional zones: a reaction zone for methane cracking, a fluidized bed zone for product separation, and separate outlets for gaseous and solid products. This segmentation allows simple removal of solid carbon through the fluidized bed mechanism without requiring complex mechanical cleaning systems, maintaining low device complexity while achieving continuous hydrogen production
3Use of energy by moving object
If conventional heat transfer methods are used in the reactor, then thermal energy is transferred to reactants, but thermal loss increases and temperature control precision decreases
Solution Approach 1:
The patent implements feedback control through temperature sensors positioned throughout the reactor and a control system that adjusts heating power and fluidized bed flow rate in real-time based on measured temperature deviations. This feedback mechanism minimizes thermal loss by optimizing heat transfer efficiency and maintains precise temperature control for optimal methane cracking reactions
Solution Approach 2:
The patent maintains continuous operation of the fluidized bed system, ensuring uninterrupted thermal energy transfer to reactants and continuous removal of products. This continuity eliminates thermal cycling losses and maintains steady-state efficient heat transfer, reducing overall thermal loss while preserving effective temperature control
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 system enables continuous operation with reduced emissions and increased control over temperature, pressure, and residence time, minimizing thermal loss and maintaining reactor efficiency.
Implementation Method 1
the heat transfer fluid can be configured to provide thermal energy to the reactant in the reaction vessel to form the first reaction product
Implementation Method 2
the heat transfer fluid can have a greater density than the first reaction product such that at least a portion of the first reaction product can float on a surface of the heat transfer fluid
Implementation Method 3
the heat transfer fluid can have a greater density than the first reaction product such that at least a portion of the first reaction product can float on a surface of the heat transfer fluid
Implementation Method 4
the thermal energy in the first outlet flow can be transferred to the first inlet flow stream
Data Source
AI summary
An exemplary embodiment of the present invention provides a reactor system comprising: a reaction vessel comprising a reactant, a heat transfer fluid and a first reaction product, wherein the heat transfer fluid has a greater density than the first reaction product such that at least a portion of the first reaction product floats on a surface of the heat transfer fluid; a first outlet positioned at a surface level of the first reaction product, the first outlet configured to output a first outlet flow comprising at least a portion of the first reaction product and at least a portion of the heat transfer fluid; wherein the heat transfer fluid is configured to provide thermal energy to the reactant in the reaction vessel to form the first reaction product.