Systems for peak shaving with coupled surplus energy utilization and solid waste treatment
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Solution Overview
Problem
Current pyrolysis systems face limitations such as insufficient production capacity, high power consumption, and suboptimal gas conversion rates, particularly in large-scale solid waste processing, with solar-thermal systems being inadequate and vertical microwave pyrolysis requiring high energy consumption and single-stage processing.
Innovation Solution
A two-stage pyrolysis process involving a solar concentrating tower, gasifier, microwave pyrolysis device, and preprocessing chamber, utilizing solar and thermal energy for efficient pyrolysis of solid waste into combustible gases, with a two-stage temperature range of 500° C. to 1100° C. and integrated thermal power generation for flexible energy utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If solar-thermal coupled biomass pyrolysis device is used, then the system can operate without complete reliance on solar energy, but the production capacity is insufficient for large-scale solid waste processing
Solution Approach 1:
The patent combines solar-thermal pyrolysis with microwave pyrolysis systems to create a hybrid configuration. The solar-thermal system provides base-load operation with thermal energy storage, while the microwave system supplements during high-demand periods, achieving both operational independence and high production capacity for large-scale waste processing.
2Reliability
If conventional vertical microwave pyrolysis is used, then complete pyrolysis can be achieved, but high power consumption and low energy efficiency result
Solution Approach 1:
The system performs preliminary drying and preheating of biomass using solar-thermal energy before microwave pyrolysis. Thermal energy storage systems preheat the biomass material, reducing the energy burden on the microwave system and achieving complete pyrolysis with lower power consumption.
Solution Approach 2:
The patent implements a two-stage temperature process: solar-thermal pyrolysis at moderate temperatures (300-500°C) followed by microwave pyrolysis at higher temperatures (800-1000°C). This parameter progression achieves complete pyrolysis while optimizing energy efficiency by matching temperature requirements to the most suitable energy source at each stage.
3Reliability
If single-stage microwave pyrolysis at 1000° C.-1100° C. is used, then complete pyrolysis can be achieved, but gas conversion rates become suboptimal
Solution Approach 1:
The patent divides pyrolysis into distinct stages: solar-thermal pyrolysis at 300-500°C for initial decomposition, followed by microwave pyrolysis at 800-1000°C for complete conversion. This segmentation optimizes gas conversion rates by performing temperature-sensitive decomposition reactions at appropriate temperature ranges rather than subjecting all material to high temperatures simultaneously.
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 achieves reduced pyrolysis duration, lower energy consumption, and improved gas conversion efficiency, enabling flexible energy storage and release, optimizing energy mix, reducing operational costs, and enhancing waste recycling rates.
Implementation Method 1
a solar concentrating tower provided with a heat absorber... The heat absorber is configured to supply heat to the gasifier
Implementation Method 2
solar-thermal coupled biomass pyrolysis device
Implementation Method 3
The gasifier is configured to pyrolyze solid waste into primary combustible gas, pyrolysis oil, and pyrolysis char
Implementation Method 4
The microwave pyrolysis device is powered by a thermal power generation unit, and configured to pyrolyze the pyrolysis oil and the pyrolysis char into secondary combustible gas
Implementation Method 5
vertical microwave pyrolysis to enhance gas yield
Data Source
AI summary
A system for peak shaving with coupled surplus energy utilization and solid waste treatment is provided. The system includes a solar concentrating tower provided with a heat absorber, a gasifier, a gas storage tank, a tar storage mechanism, and a microwave pyrolysis device. The heat absorber configured to supply heat to the gasifier. The gasifier is configured to pyrolyze solid waste into primary combustible gas, pyrolysis oil, and pyrolysis char. The gas storage tank is in fluid communication with the gasifier and configured to collect the primary combustible gas. The tar storage mechanism is in fluid communication with the gasifier and configured to store the pyrolysis oil and the pyrolysis char. The microwave pyrolysis device is powered by a thermal power generation unit. The microwave pyrolysis device is configured to pyrolyze the pyrolysis oil and the pyrolysis char into secondary combustible gas, which is collected into the gas storage tank.