Biomass Cascade Pyrolysis for Renewable Energy Storage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing energy storage technologies for large-scale wind and photovoltaic power generation face challenges such as high costs, short service life, potential fire risks, low efficiency, and geographical limitations, making them unsuitable for reliable and adaptive energy storage.
Innovation Solution
The introduction of biomass cascade pyrolysis technology, where biomass is converted into stable chemical energy products (bio-char, bio-oil, and pyrolytic gas) using low-temperature and high-temperature pyrolysis, driven by new energy power generation, enabling efficient storage and utilization of redundant electric energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrochemical energy storage is used, then energy storage capability is provided, but cost increases and service life decreases
Solution Approach 1:
The patent changes the fundamental parameter of energy storage from electrochemical to thermal-chemical transformation. By using biomass pyrolysis to convert biomass into energy storage media (bio-char, bio-oil, pyrolytic gas), the system achieves energy storage through chemical transformation rather than electrochemical reactions, thereby avoiding the service life limitations of electrochemical systems.
Solution Approach 2:
The patent employs biomass as a renewable, inexpensive raw material that can be continuously supplied. Instead of using expensive electrochemical storage media with limited lifetimes, the system uses biomass feedstock that is naturally replenished, effectively replacing the need for costly and short-lived electrochemical storage components.
2Reliability
If pumped energy storage is used, then energy storage capability is provided, but efficiency decreases and geographical location susceptibility increases
Solution Approach 1:
The patent replaces the mechanical pumped water storage system with a thermal-chemical pyrolysis system. Instead of using mechanical pumps to store energy by lifting water, the system uses thermal energy from biomass combustion to drive pyrolysis reactions, converting energy into stable chemical forms that can be stored without geographical constraints.
Solution Approach 2:
The patent changes the storage mechanism from mechanical potential energy (pumped water) to chemical energy (pyrolysis products). This parameter change eliminates the efficiency losses associated with mechanical pumping and the geographical limitations of pumped storage, as pyrolysis can occur in various locations with appropriate biomass feedstock.
3Reliability
If compressed air energy storage is used, then energy storage capability is provided, but device complexity increases due to heat radiation system requirements
Solution Approach 1:
The patent replaces the compressed air storage system with a biomass pyrolysis system. Instead of compressing air and requiring complex heat radiation systems for thermal management, the system directly converts biomass into energy storage media through pyrolysis, eliminating the need for compressed air infrastructure and associated thermal management systems.
Solution Approach 2:
The patent extracts the essential function of energy storage from the complex compressed air system and implements it through a simpler biomass pyrolysis process. By taking out the heat radiation system requirements from the energy storage approach, the patent achieves a more straightforward system that uses biomass conversion rather than air compression and thermal management.
4Power
If new energy power generation is directly connected to power grid, then power generation is achieved, but power waste occurs due to inability to consume energy in time
Solution Approach 1:
The patent applies preliminary action by converting excess new energy power into biomass pyrolysis products before the energy can be wasted. The system uses biomass as a carrier medium to store excess electrical energy in the form of chemical energy (bio-char, bio-oil, pyrolytic gas), allowing the energy to be stored and consumed at different times without wasting the excess generation.
Solution Approach 2:
The patent changes the temporal parameter of energy consumption by transforming electrical energy into stable chemical energy forms that can be stored and consumed at different times. This parameter change allows the system to decouple power generation from immediate consumption, eliminating power waste while maintaining the ability to supply energy when needed.
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 solution provides a cost-effective, reliable, and highly adaptive energy storage method that converts unstable new energy power into stable chemical energy, enhancing energy flexibility and reducing grid impact, while also offering multiple product applications such as clean fuels and renewable chemicals.
Implementation Method 1
Pyrolysis is a common biomass utilization mode, in which under an inert atmosphere, the heat energy is used to cut off the chemical bonds of macromolecular compounds of the biomass so as to convert the biomass resource into products containing chemical energy, such as bio-char, bio-oil and pyrolytic gas
Implementation Method 2
a heat transfer oil storage box, a low-temperature pyrolysis device and a high-temperature pyrolysis device; the low-temperature pyrolysis device is connected with the heat transfer oil storage box
Implementation Method 3
the heat energy is used to cut off the chemical bonds of macromolecular compounds of the biomass
Data Source
AI summary
The provided is energy storage method and device for biomass cascade pyrolysis coupled with new energy power generation. The key point of the technical solution is that, with inexpensive, clean and safe biomass as energy storage medium, the redundant unstable electric energy is converted by a cascade pyrolysis energy storage system into an easy-to-store liquid and solid chemical energy in biomass pyrolytic products, and based on use requirements, can be further converted into clean fuels for power generation or exported renewable chemicals, so as to realize continuous stable output of the new energy power generation systems. Furthermore, the cascade pyrolysis energy storage system can, based on the principle of “energy level matching”, fully recover and utilize the electric energy, high-temperature heat energy and low-temperature heat energy generated in pyrolysis processes, thereby maximizing the energy utilization efficiency of the system.