Compact Synthesis Gas Reactor with Nested Catalyst Bed
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Solution Overview
Problem
Existing methods for producing synthesis gas containing H2 and CO through catalytic conversion of hydrocarbons with steam are inefficient and require complex setups, necessitating a more compact and easily deployable solution.
Innovation Solution
A compact apparatus featuring a vertical reaction tank with a tube bundle of internally heatable radiant tubes, where a catalyst bed is indirectly heated by thermal radiation and convection, and the feed gas and steam mixture is preheated using combustion exhaust gases for efficient heat exchange before entering the catalyst bed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional catalytic conversion methods are used with external heating, then synthesis gas can be produced, but the equipment becomes complex and deployment effort increases
Solution Approach 1:
The catalyst bed is placed inside the combustion chamber, with the catalyst-containing reaction space nested within the firebox. This integration eliminates the need for separate external heating equipment and complex heat exchange systems, directly reducing device complexity while maintaining high productivity through efficient direct heating
Solution Approach 2:
The heating function and catalytic conversion function are merged into a single integrated reactor system. The combustion chamber serves both as the heat source and as the reaction vessel containing the catalyst bed, simplifying the overall equipment structure while improving thermal efficiency and synthesis gas production
2Ease of manufacture
If a compact apparatus design is implemented, then deployment effort is reduced, but heat management efficiency may be compromised
Solution Approach 1:
The nested configuration of the catalyst bed within the combustion chamber creates a compact apparatus that is easy to deploy while maintaining excellent heat management. The intimate contact between the combustion gases and catalyst bed ensures efficient heat transfer, and the integrated design minimizes heat losses, achieving both compactness and thermal efficiency
Solution Approach 2:
The catalyst bed is positioned to receive direct thermal radiation and convection from the combustion chamber walls, creating localized high-temperature zones where the catalytic conversion is most effective. This local quality optimization ensures efficient heat management in the critical reaction zones while keeping the overall apparatus compact
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 a more efficient and compact production of synthesis gas with improved heat management, reducing deployment efforts and increasing productivity while maintaining high H2 and CO content.
Implementation Method 1
heated indirectly by thermal radiation and convection
Implementation Method 2
heated indirectly by thermal radiation and convection
Implementation Method 3
preheated by heat exchange at a pressure of 10 to 45 bar to a temperature of 300 to 700° C.
Implementation Method 4
catalytic conversion of hydrocarbons contained in a feed gas stream with steam
Implementation Method 5
The catalytic conversion of hydrocarbons contained in feed gas streams free from sulfur with steam for producing gas with a relatively high content of H2 and CO is effected according to the following reactions taking place at the same time
Data Source
AI summary
In a process for producing synthesis gas by catalytic conversion of hydrocarbons contained in a desulfurized feed gas stream with steam, the mixture of feed gas and steam is preheated by heat exchange at a pressure of 10 to 45 bar to a temperature of 300 to 700° C. and is subsequently heated by heat exchange above a catalyst at a pressure of 10 to 45 bar to a temperature of 650 to 950° C. To minimize the apparatus involved, it is provided that the mixture of feed gas and steam traverses a catalyst bed contained in a reaction tank, and the catalyst bed is heated by thermal radiation and convection.