13 Questions
What is the most basic process involved in fuel, food, and chemicals production and distribution?
Syngas production
What is the combination of steam reforming and partial oxidation called?
Autothermal reforming
What is the purpose of using a pre-reformer in the process?
To protect downstream catalyst
Which element causes corrosion in heat exchangers and poisons catalysts in the Cu-WGS process?
Chlorides
What is the purpose of scrubbing Cl- to below 5ppb with alkaline-treated Al2O3?
To remove impurities
What is the purpose of scrubbing Cl- to below 5ppb with alkaline-treated Al2O3 in fuel and chemicals production?
Prevent corrosion in heat exchangers and protect catalysts from being poisoned
What is the nature of the combined reaction of CO and H2 formation from CnHm?
Endothermic
What is the purpose of a pre-reformer in the steam reforming process for syngas production?
Lower the steam/carbon (S/C) ratio operation and protect downstream catalysts
What is the compositional requirement for syngas in terms of stoichiometry?
M = (H2-CO2)/(CO + CO2) = 2
Why are the primary and secondary reforming stages in the NH3 synthesis process operated at high temperatures?
To favor the equilibrium yields
What is the purpose of adjusting the variables H2/CO and H2O/CH4 ratio in the production of syngas?
To achieve the desired H2/CO ratio
What is the nature of the combined steam/CO2 reforming for syngas with H2/CO = 2?
Endothermic
Why is steam reforming considered to be one of the most basic processes involved in fuel and chemicals production?
It is a fundamental method for syngas production
Study Notes
Chemical Processes in Fuel and Chemicals Production
- Scrubbing Cl- to below 5ppb with alkaline-treated Al2O3 is done to prevent corrosion in heat exchangers caused by chlorides and protect the catalysts from being poisoned.
- The combined reaction of CO and H2 formation from CnHm is endothermic.
- Processes based on H2 and syngas are one of the most basic processes involved in fuel, food, and chemicals production and distribution.
- For NH3 synthesis, primary and secondary reforming are operated at high temperatures to favor the equilibrium yields.
- A pre-reformer may be used in the steam reforming process to lower the steam/carbon (S/C) ratio operation and protect downstream catalysts.
- The combined steam/CO2 reforming for syngas with H2/CO = 2 is an endothermic reaction, meaning that heat must be supplied.
- The compositional requirement for syngas in terms of stoichiometry is M = (H2-CO2)/(CO + CO2) = 2.
- Adjusting the variables H2/CO and H2O/CH4 ratio in the production of syngas is to achieve the desired H2/CO ratio.
- Steam reforming is considered to be one of the most basic processes involved in fuel, food, and chemicals production and distribution.
- The primary and secondary reforming stages in the NH3 synthesis process are operated at high temperatures to favor the equilibrium yields.
- Scrubbing Cl- to below 5ppb with alkaline-treated Al2O3 in the Cu-WGS process is done to prevent corrosion in heat exchangers and protect the catalysts from being poisoned.
- The compositional requirement for syngas in terms of stoichiometry is M = (H2-CO2)/(CO + CO2) = 2.
Test your knowledge about the chemical processes involved in fuel, food, and chemicals production, including the reactions, conditions, and equipment used in these processes.
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