Segmented Synthesis Gas Reactor with Countercurrent Heat Exchange
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing reactors for producing synthesis gas face issues such as thermomechanical stress, difficulty in maintaining optimal hydrogen to carbon monoxide ratios, risk of coke formation and explosion, and complex maintenance due to their design, which makes them unsuitable for high-pressure operations and mobile applications.
Innovation Solution
A reactor design featuring a mixer with separate fluid-tight feed lines for reactants, a pressure-stable structure allowing easy maintenance, and a countercurrent flow arrangement to prevent thermodynamic stress and control temperature peaks, using materials like stainless steel and ceramic components to ensure safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional reactor designs are used for synthesis gas production, then the reactor can operate continuously, but thermomechanical stress and fatigue occur due to temperature changes
Solution Approach 1:
The reactor is divided into modular segments that can be independently replaced. The mixing chamber is separated from the reactor vessel, allowing the mixing components to be maintained or replaced without shutting down the entire reactor, thus enabling continuous operation while reducing thermomechanical stress on any single component.
Solution Approach 2:
The reactor design incorporates dynamic temperature control through the heat exchanger system that recovers heat from the product gas and uses it to preheat the feedstock. This dynamic thermal management reduces temperature gradients and thermomechanical stress while maintaining continuous operation.
2Productivity
If homogeneous partial oxidation is used to convert gaseous reactants, then the reaction proceeds efficiently, but explosion hazards occur due to homogeneous reactions
Solution Approach 1:
The mixing chamber is extracted and separated from the main reactor vessel. This separate mixing chamber allows for controlled mixing of reactants before they enter the reactor, preventing homogeneous explosions in the main reaction zone while maintaining efficient conversion.
Solution Approach 2:
A catalyst is introduced as an intermediary substance in the reactor. The catalyst promotes the oxidation reaction on its surface rather than allowing homogeneous gas-phase reactions, thereby maintaining high productivity while eliminating explosion hazards through heterogeneous catalysis.
3Productivity
If catalytic reforming with burner systems is used, then synthesis gas can be produced, but a significant amount of space is required
Solution Approach 1:
The heat exchanger and reactor are merged into a compact integrated system. The heat exchanger recovers heat from the product gas and uses it to preheat the feedstock, eliminating the need for separate burner systems and reducing the overall space requirement while maintaining high synthesis gas production efficiency.
Solution Approach 2:
The mixing chamber is nested within the reactor structure, and the heat exchanger is integrated into the reactor vessel. This nested arrangement allows multiple functions (mixing, reaction, heat exchange) to be performed in a compact configuration, significantly reducing the space required for synthesis gas production.
4Stress or pressure
If reactor components are designed for high pressure operation, then synthesis gas can be produced under high pressure, but maintenance and replacement of components becomes difficult
Solution Approach 1:
The reactor is segmented into modular components including the mixing chamber, reactor vessel, and heat exchanger. These segments can be independently accessed and maintained. The mixing chamber can be removed and replaced without shutting down the reactor, making maintenance of high-pressure components easy while maintaining high pressure operation capability.
5Strength
If the reactor is designed as a monolithic system, then structural integrity is maintained, but individual components cannot be easily replaced
Solution Approach 1:
The monolithic reactor design is replaced with a segmented modular system where the mixing chamber, reactor vessel, and heat exchanger are separate components. This segmentation maintains structural integrity through proper flanged connections while allowing individual components to be easily replaced or maintained without affecting the entire 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 reactor enables safe and efficient production of synthesis gas under high pressure with improved maintenance accessibility, reduced risk of thermomechanical stress, and enhanced process intensification, making it suitable for mobile and compact systems.
Implementation Method 1
a heat exchanger, in particular a feed heating heat exchanger, for heating the at least one feedstock with product heat
Implementation Method 2
the complete recovery of heat from the exhaust gas
Implementation Method 3
Catalytic partial oxidation is often used in the production of synthesis gas
Implementation Method 4
catalytic partial oxidation is proposed for process intensification
Implementation Method 5
a countercurrent design, are not disclosed
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a reactor for producing synthesis gas, which is connected optionally in a fluid-tight manner to a heat exchanger, and to a method for producing synthesis gas, preferably under high pressure.