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Hydrogen Fired Steam Cracking Furnace

petrochemical plants steam crackers energy transition co2 neutral

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#1 panagiotis

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Posted 17 May 2022 - 03:47 PM

Hello everyone,

 

I would like to ask the "petrochemical experts" how to find the idea of hydrogen combustion to supply the heat required for the endothermic cracking reaction?  Can it be considered as a serious step towards CO2 neutrality? 

(Let's take as an assumption that hydrogen is green, which means produced by electrolysers with the help of wind power or solar power)

 

Thank you in advance!



#2 breizh

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Posted 18 May 2022 - 12:10 AM

Hi,

Using my best friend Google  : 

https://www.icis.com...rbon-footprint/

 

many more articles available but I'm not an expert !

 

https://www.engineer...ASAAEgKRjPD_BwE

 

 

Breizh



#3 Pilesar

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Posted 19 May 2022 - 05:49 PM

Hydrogen firing is possible. Many crackers allow H2/methane blend for fuel. H2 does not carry much fuel value per unit volume. It also takes energy to produce H2 and won't help the environment unless renewable energy is used. Hydrogen costs are coming down fairly steadily, though, and maybe in ten years we will see this happen.



#4 panagiotis

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Posted 25 May 2022 - 03:21 PM

Thank you for your answers! :)



#5 Sagar Nawander

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Posted 28 June 2022 - 11:53 PM

H2 cracking is possible to have CO2 neutrality, but at the same side you also have to compromise on the Steam production (from the heat recovery). Burners needs to be re-designed to match with the specific heat, the entire heat transfer calculation for furnace will change which impact the Economics.
so you get benefit at one side but also have to compromise on other.



#6 Saml

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Posted 02 July 2022 - 02:11 PM

Unless you are aiming at a flexible unit that can operate with both fossil or green hydrogen, I would ask why going to electrolysis plus burning H2 instead of using electric heating directly. Yes, it means a new technology base, developing an electric heated steam cracker is not trivial, as a modern cracker may require in the order of the hundreds of MW.  But from an efficiency and capex point of view, the development may make sense. It is not so trivial to have hundreds of MW of electrolysers either.



#7 panagiotis

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Posted 09 July 2022 - 08:34 PM

Thank you for your interesting replies. I strongly believe that the future is the electrification of steam furnace. But, I wanted to learn more about hydrogen fired burners and if it's feasible and efficient, etc.




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