Syngas Production via CO2 and H2S Co-Reduction
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Solution Overview
Problem
Current methods for producing synthesis gas (syngas) from CO2 and H2S are inefficient and require high energy inputs, with existing processes often relying on partial oxidation of hydrocarbons or coal gasification, which are energy-intensive and not environmentally sustainable.
Innovation Solution
A regenerative thermal reactor process using a tubular plug flow reactor with refractory lining, operating between 800-1550°C, where CO2 and H2S are converted to syngas with oxygen or air, achieving high conversion yields and energy efficiency through efficient regeneration and heat recovery, allowing for the production of syngas with varying H2/CO ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional partial oxidation of hydrocarbons or coal gasification is used to produce syngas, then syngas production is achieved, but high energy input and environmental unsustainability occur
Solution Approach 1:
The invention changes the chemical parameters by using CO2 and H2S as reactants instead of traditional hydrocarbons or coal, operating at temperatures of 800-1550°C to achieve syngas production with reduced energy consumption and improved environmental sustainability
Solution Approach 2:
The process converts harmful greenhouse gases CO2 and H2S into valuable syngas components (CO and H2), transforming environmental pollutants into useful chemical feedstocks while reducing energy input requirements compared to conventional methods
2Productivity
If conventional partial oxidation of hydrocarbons or coal gasification is used to produce syngas, then syngas production is achieved, but environmental unsustainability occurs
Solution Approach 1:
The process converts harmful greenhouse gases CO2 and H2S into valuable syngas components (CO and H2), transforming environmental pollutants into useful chemical feedstocks while reducing energy input requirements compared to conventional methods
Solution Approach 2:
The invention changes the chemical parameters by using CO2 and H2S as reactants instead of traditional hydrocarbons or coal, operating at temperatures of 800-1550°C to achieve syngas production with reduced energy consumption and improved environmental sustainability
3Use of energy by moving object
If high conversion yields are achieved through efficient regeneration and heat recovery, then energy efficiency is improved, but process complexity increases
Solution Approach 1:
The invention employs periodic regeneration cycles where the catalyst is alternately oxidized and reduced, creating rhythmic operational phases that enable efficient heat recovery and energy utilization while maintaining manageable process complexity through established cyclic operation patterns
Solution Approach 2:
The process utilizes phase transitions in the catalyst between oxidized and reduced states during regeneration cycles, enabling efficient energy recovery and high conversion yields while the systematic management of these transitions keeps process complexity controlled
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 process achieves high conversion rates of CO2 and H2S to syngas with reduced energy consumption, enabling the production of syngas with different H2/CO ratios, enhancing the efficiency and sustainability of syngas production while minimizing environmental impact.
Implementation Method 1
CO2 and H2S are converted to syngas with oxygen or air, achieving high conversion yields
Implementation Method 2
CO2 and H2S are converted to syngas with oxygen or air
Implementation Method 3
The purpose of the oven is to heat the tubes by heat radiation to reach the reaction temperatures up to 800°C
Implementation Method 4
operating between 800-1550°C, where CO2 and H2S are converted to syngas
Implementation Method 5
achieving high conversion yields and energy efficiency through efficient regeneration and heat recovery
Data Source
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AI summary
A process for producing synthesis gas (syngas) comprising the endothermic reaction between CO2 and H2S, wherein the energetic supply is provided by the exothermic oxidation of a small portion of H2S to SO2 according to the following reaction scheme: R2: H2S + 1.5 O2 → SO2 + H2O said process being carried out according to the following overall theoretical reaction scheme R1, not taking into account the aforementioned exothermic reaction R2, R1: CO2 + 2 H2S → CO + H2 + S2 + H2O wherein the amount of fed oxygen is comprised between 5% and 25% by volume over the total volume of fed reactants gaseous mixture.