Why do some hydrogen production units have one-stage steam supply, while others have two-stage steam supply?
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Experts, why do some hydrogen production units have steam supply in one stage (with steam supplied only before the pre-conversion reactor), while others have it in two stages (with steam supplied before both the pre-conversion and conversion reactors)? What are the advantages and disadvantages of each? What is used to determine single-stage steam distribution and two-stage steam distribution?
Different companies have their own sets of process patents, whether it’s one stage or two stages – the ultimate goal is the same: to convert dry gas into hydrogen. The so-called two-stage method involves separating the upper 3-meter section of the single-stage furnace tube and using it separately for conversion purposes.
Yes, but for two-stage steam supply, are there any good recommendations regarding what the water-to-carbon ratio should be before pre-conversion, and what it should be before actual conversion?
This water-to-carbon ratio value is specified in the process package; just follow the requirements outlined in it.
This question is a bit too difficult for me; I work in production and lack a lot of knowledge in terms of design. I suggest you get in touch with the teachers at the design institute.