Reaction Pump for Hydrocarbon Thermal Conversion
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Solution Overview
Problem
Conventional thermal decomposition methods for hydrocarbons, particularly ligno-cellulosic materials, require higher temperatures due to poor heat conductivity, leading to yield- and quality-reducing side reactions and inefficient production of liquid fuels and bitumen.
Innovation Solution
A reaction pump system with a cylindrical reaction chamber and two rotors, where the first rotor transfers energy to split hydrocarbons, and the second rotor temporarily pressurizes the mixture, optimizing energy transfer and reaction conditions to enhance yield and quality of products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If higher temperatures are applied to ensure heat reaches materials inside the reactor, then heating effectiveness is improved, but yield and quality of liquid fuels are reduced due to side reactions
Solution Approach 1:
A liquid medium (water or organic liquid) is introduced as an intermediary heat transfer agent. The liquid is heated in contact with the reactor wall and then pumped through the reaction zone, transferring heat directly to the ligno-cellulosic material. This intermediary approach enables effective heat transfer at lower temperatures, avoiding the formation of oxo-components and carboxylic acids that occur at higher temperatures.
Solution Approach 2:
The conventional thermal conduction-based heating system is replaced with a fluid-based heat transfer system. Instead of relying on thermal conduction through the reactor wall and material bed, the invention uses a pumped liquid circulation system to actively transport heat, enabling more efficient and controlled heat distribution at lower temperature levels.
2Temperature
If higher temperatures are applied to ensure heat reaches materials inside the reactor, then heating effectiveness is improved, but quality of liquid fuel products is reduced due to formation of oxo-components
Solution Approach 1:
The liquid medium serves as an intermediary that enables heat transfer at controlled, lower temperatures. By circulating heated liquid through the reaction zone, the system achieves effective heating without exceeding the temperature threshold that causes formation of oxo-components like carboxylic acids, thereby maintaining high product quality.
Solution Approach 2:
The invention changes the temperature parameter from high (500-900°C) to moderate (270-450°C) by implementing active liquid heat transfer. This parameter change prevents the thermal degradation pathways that lead to oxo-component formation, preserving the quality of liquid fuel products.
3Productivity
If higher temperatures are applied for bituminous splitting, then conversion speed is improved, but economic value of products is reduced due to faster gas formation and coal conversion
Solution Approach 1:
The circulated liquid medium enables rapid and uniform heat distribution throughout the bituminous material at moderate temperatures. This active heat transfer mechanism achieves efficient conversion rates comparable to or better than high-temperature processes, while preventing excessive gas formation and coal conversion that would reduce economic value.
Solution Approach 2:
By changing the temperature parameter to a moderate range (270-450°C) and implementing active liquid heat transfer, the system achieves optimal conversion rates for bituminous materials. This prevents the runaway gas formation and coal conversion that occur at higher temperatures, preserving the economic value of liquid fuel and bitumen products.
4Device complexity
If conventional heating from outside is used, then equipment complexity is reduced, but heat transfer effectiveness to interior materials is insufficient
Solution Approach 1:
A liquid medium is introduced as an intermediary heat transfer agent that circulates through the reaction zone. The liquid absorbs heat from the reactor wall and delivers it directly to the material, significantly improving heat transfer effectiveness compared to conventional conduction-based heating, while adding only moderate system complexity.
Solution Approach 2:
The invention employs a hydraulic system (pumped liquid circulation) to actively transport heat through the reaction zone. This hydraulic heat transfer mechanism overcomes the limitations of thermal conduction, achieving superior heat distribution efficiency with a relatively simple pump-and-pipe system.
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 method increases conversion rates of middle distillates and produces high-quality diesel fuels and bitumen raw materials with reduced side reactions, achieving commercially viable quantities and improved calorific values, while maintaining lower process temperatures and dwell times.
Implementation Method 1
the first rotor transfers energy to the first mixture to split hydrocarbons contained in the first mixture
Implementation Method 2
the first rotor transfers energy to the first mixture to split hydrocarbons
Implementation Method 3
the second rotor temporarily pressurizes the second mixture when being conveyed through the outlet section
Data Source
Figure 1
Figure 2a~2e
Figure 3
AI summary
The invention relates to a reaction pump, a system and a method for thermal conversion of hydrocarbons, wherein the reaction pump comprises: a reaction chamber (11); an inlet section (12) configured to conduct a first mixture containing hydrocarbons into the reaction chamber (11); an outlet section (13); a first rotor (15) disposed in the reaction chamber (11) and configured to transfer energy to the first mixture to split hydrocarbons contained in the first mixture, whereby a second mixture containing split hydrocarbons is obtained, and to convey the second mixture to the outlet section (13). A second rotor (20) is disposed in the outlet section (13) and configured to convey the second mixture through the outlet section (13) and to temporarily pressurize the second mixture when being conveyed through the outlet section (13). By means of the invention, yield and/or quality of the products are enhanced compared to conventional approaches. In particular, both quality diesel fuels and valuable bitumen raw materials can be produced, especially from biomass solids.