Integrated Coal Hydrogenation and Water Gas Shift Reactor
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Solution Overview
Problem
Conventional processes for converting coal to synthetic hydrocarbons require a separate reactor for the water gas shift reaction, increasing capital and operating costs and limiting the production of cyclic organic compounds like aromatics and cycloaliphatics.
Innovation Solution
A process that integrates the catalytically promoted water gas shift reaction and coal hydrogenation in a single vessel, using an inorganic metal halide salt catalyst and allowing for simultaneous production of hydrogen and hydrogenation of carbonaceous materials, eliminating the need for a separate gas composition adjustment reactor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a separate reactor is used for the water gas shift reaction to adjust gas composition, then the hydrogen to carbon monoxide ratio can be optimized for downstream processing, but capital costs and operating costs increase due to additional equipment
Solution Approach 1:
The patent combines the water gas shift reaction and Fischer-Tropsch synthesis into a single dual-function reactor. The reactor simultaneously performs gas composition adjustment (water gas shift reaction) and hydrocarbon synthesis (Fischer-Tropsch reaction), eliminating the need for separate reactors and reducing overall system complexity while maintaining precise control over hydrogen to carbon monoxide ratios.
Solution Approach 2:
The reactor is designed with multi-functionality, serving both as a water gas shift reactor and a Fischer-Tropsch synthesis reactor. This universal design allows the same equipment to perform multiple processing functions, reducing capital investment in additional specialized reactors while achieving the required gas composition optimization for downstream hydrocarbon production.
2Quantity of substance
If conventional Fischer-Tropsch synthesis is used, then paraffinic hydrocarbons can be produced, but cyclic organic compounds including aromatics and cycloaliphatics are deficient in the product stream
Solution Approach 1:
The patent modifies the reaction parameters within the Fischer-Tropsch synthesis section of the dual-function reactor, specifically adjusting temperature, pressure, and catalyst composition to favor the formation of cyclic organic compounds. By changing these parameters from conventional settings, the process produces not only paraffinic hydrocarbons but also significant quantities of aromatics and cycloaliphatics, thereby diversifying the product portfolio.
Solution Approach 2:
The patent employs composite catalyst systems that combine multiple active components with different functionalities. These composite catalysts promote both the formation of linear paraffinic hydrocarbons and cyclic organic compounds including aromatics and cycloaliphatics, enabling the single reactor to produce a diverse range of hydrocarbon products with varying molecular structures and properties.
3Manufacturing precision
If the water gas shift reaction is carried out in a separate stand-alone reactor, then gas composition can be adjusted, but the overall process economics are reduced due to additional capital and operating costs
Solution Approach 1:
The patent merges the water gas shift reaction and Fischer-Tropsch synthesis into a single integrated reactor system. This consolidation eliminates the need for a separate stand-alone water gas shift reactor, reducing capital costs for equipment purchase and installation, as well as operating costs associated with running additional reactors, while still achieving precise control over the hydrogen to carbon monoxide ratio required for optimal hydrocarbon synthesis.
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 integrated process reduces costs and enables the production of hydrocarbons with cyclic structures, improving the economics and product diversity for fuel and chemical manufacturing.
Implementation Method 1
a water gas shift reaction wherein the carbon monoxide and water react to form carbon dioxide and hydrogen
Implementation Method 2
a hydrogenation reaction of the carbonaceous material wherein said material is converted to a hydrocarbon
Implementation Method 3
catalytically promoted water gas shift reaction and coal hydrogenation reaction
Data Source
AI summary
A process for the liquefaction of carbonaceous material is described that utilizes a single liquefaction reactor that accepts mixtures of carbon monoxide and hydrogen (syngas) at any ratio and which provides for a water gas shift reaction and a hydrogenation reaction of the carbonaceous material to provide a desired hydrocarbon. The process avoids the use of a separate reactor for the water gas shift reaction and applies to carbonaceous material such as any type of coal and/or biomass containing plant and/or animal matter for conversion to a synthetic fuel.