Closed-Loop Carbon Gasification for Zero-Emission Energy
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Solution Overview
Problem
Current methods for energy generation from carbonaceous materials, such as waste, biomass, and coal, result in significant carbon dioxide emissions and inefficiencies, with existing systems being complex, costly, and unable to meet growing energy demands while ensuring emission-free operations.
Innovation Solution
A closed-loop process involving pyrolysis, gasification, and Fischer-Tropsch synthesis is employed, where carbonaceous materials are pyrolyzed to produce coke and gas, then gasified to form synthesis gas, which is converted into hydrocarbons and methanol without emitting carbon dioxide, using a recycling plant with three pressure-tight stages and a pressure gradient to facilitate gas flow without additional conveying systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional combustion methods are used to generate energy from carbonaceous materials, then energy production is achieved, but carbon dioxide emissions are produced
Solution Approach 1:
The patent changes the fundamental chemical parameters of energy generation by transitioning from combustion (oxidation) to gasification followed by Fischer-Tropsch synthesis. This transforms the chemical reaction pathway from C + O2 → CO2 to a multi-step process producing hydrocarbons, thereby eliminating CO2 emissions while maintaining energy production capability
Solution Approach 2:
The patent converts the harmful carbon dioxide that would normally be emitted during combustion into a useful resource by using it as a feedstock for Fischer-Tropsch synthesis. The CO2 is transformed into synthetic hydrocarbons (gasoline, diesel, jet fuel) that can be used as clean fuels, turning the harmful emission into a beneficial energy carrier
2Object-generated harmful factors
If carbon dioxide separation systems are implemented, then emission-free energy generation is achieved, but system complexity and cost increase
Solution Approach 1:
The patent extracts and removes the harmful carbon dioxide from the combustion process by implementing a gasification system that converts carbonaceous materials into synthesis gas without complete oxidation. This extraction prevents CO2 from being emitted in the first place, eliminating the need for complex post-combustion separation systems
Solution Approach 2:
The patent introduces synthesis gas (CO and H2 mixture) as an intermediary substance between the carbonaceous material and the final energy product. This intermediary enables the transformation process to proceed without direct combustion, thereby avoiding CO2 emissions while simplifying the overall system architecture
3Object-generated harmful factors
If alternative energy sources such as solar and wind power are used, then carbon emissions are reduced, but energy capacity is insufficient to meet growing demand
Solution Approach 1:
The patent creates a multi-functional energy system that can process various types of carbonaceous materials (coal, biomass, waste) through a unified gasification and Fischer-Tropsch synthesis platform. This universal system provides reliable, scalable energy production capable of meeting growing demand while maintaining zero carbon emissions
Solution Approach 2:
The patent changes the energy production parameters from renewable but intermittent sources (solar, wind) to a controllable chemical process that can operate continuously at high capacity. By adjusting the gasification and synthesis reaction parameters, the system can scale energy output to match growing demand while maintaining emission-free operation
4Quantity of substance
If coke gasification processes are used, then synthesis gas is produced, but thermal energy consumption increases
Solution Approach 1:
The patent implements a feedback mechanism where a portion of the hot synthesis gas produced in the gasification process is recycled back to provide thermal energy for the endothermic gasification reactions. This internal heat recycling reduces external thermal energy consumption while maintaining high synthesis gas production rates
Solution Approach 2:
The patent utilizes the thermal energy from the exothermic oxidation of a small portion of coke to drive the endothermic gasification process. By carefully controlling the phase transitions and heat transfer in the gasification zone, the system achieves efficient energy utilization with reduced external thermal input
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 approach enables efficient, emission-free energy production from a wide range of carbonaceous materials, independent of external conditions, with stored energy released as needed, and produces high-quality energy carriers, reducing chemical and energetic losses and avoiding emissions.
Implementation Method 1
the carbonaceous materials are supplied and pyrolyzed in a first process stage, with pyrolysis coke and pyrolysis gas being produced
Implementation Method 2
the pyrolysis coke from the first process stage is gasified, producing synthesis gas
Implementation Method 3
this is gasified with the help of oxygen, carbon dioxide or water to form synthesis gas: C(s) + CO2 ⇆ 2 CO
Implementation Method 4
the synthesis gas from the second process stage is converted into hydrocarbons and/or methanol using a Fischer-Tropsch synthesis
Implementation Method 5
The thermal energy required for the course of the endothermic reactions I and II can originate, for example, from partial combustion of the solid carbon in reaction III
Data Source
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AI summary
In a process according to the invention for the emission-free generation of energy and/or hydrocarbons and other products by utilizing carbon-containing materials, in a first process stage (P1) carbon-containing materials are supplied and pyrolyzed, thereby producing pyrolysis coke (M21) and pyrolysis gas (M22). In a second process stage (P2), the pyrolysis coke (M21) from the first process stage (P1) is gasified, thereby producing synthesis gas (M24), and slag and other residual materials (M91, M92, M93, M94) are removed. In a third process stage (P3), the synthesis gas (M24) from the second process stage (P2) is converted into hydrocarbons and/or other solid, liquid and/or gaseous products (M60), which are discharged. The three process stages (P1, P2, P3) form a closed cycle. Excess gas (M25) from the third process stage (P3) is conducted as recycled gas into the first process stage (P1) and/or the second process stage (P2), and the pyrolysis gas (M22) from the first process stage (P1) is conducted into the second process stage (P2) and/or the third process stage (P3).