Pretty sure this thing was named "the agony crucible" early on when i was blueprinting it but we had to change the name because of woke.
Anyway my original plans were to build a meagre, halting thing, just barely capable of outputting the trickle of blazing blood necessary to supply our requirements for catalysed transmutation from easily sourced ingredients. (funny joke additions are the backbone of projects like this. You put an item that can be cycled infinitely through a crusher for cobblestone with a small change of dropping ghast tears, i see you have given me industrial scale access to healing effects) Hilariously, the current limiting resource is actually nether wart, as soul sand is two tech tiers away, but it can be mined from the miscellaneous jumble sequestered in the nether at scale.
However, my wrench maid has an obsession with compact design, leading her to replace my initial idea of using bottles with an obscure create mechanic involving potion aerosols. This, excitingly, cut out the requirements for bottles & gunpowder inputs for catalysing the fuel stabilizer. Additionally, a clever timing mechanism allowed us to cut our stabilizer use by a factor of 10 or more. But, most excitingly:
Our aerosol technique discovered an entirely new property derived from the air mixing. Aerosolized regeneration potion is, in fact, substantially more powerful than even potions of regen II, so efficient that we can cut out on the stabilizer refinement process entirely (reducing inputs by 2 again). It's so efficient, in fact, that we no longer need the rest cycle, and the control rod which was essential to preserve the "fuel source" in previous designs becomes a vestigial safety mechanism. Miss Maid was, of course, very disappointed with her discovery, because it made so much of her clever work redundant. She perked up, however, when I pointed out that the aerosol has no respect for the number of entities - we can essentially multiply the output of the reactor by inserting additional "fuel sources" without affecting the inputs at all. We see theoretical yields of 1 bucket per second at the higher end.
My initial design for the "Splash-Cycled Stabilized Blaze Reactor (SBR)" has become entirely outmoded by its descendant, the "Aerosol SBR". The design has become so efficient that we can use unrefined stabilizer fluid, which also cuts down on requirements for regeneration potion refinement. We can also run a small line from the reactor output back into the reactor to power the heating element, eliminating another input. The Aerosol SBR produces fuel at low cost in an extremely portable and energy dense form. Additionally it's an essential material for industrial scale transmutation catalysis.
The technology is also opening up new avenues in raw materials research - the prospect of Aerosol Stabilization with other "fuel sources" can replace hand-gathering for many of our metal needs. Additionally, we are researching the prospect of Aerosol Stabilized Ghast Reactors, which might be able to replace traditional brewing methods and turn the entire system into a closed loop. Blazing blood is also an energy dense liquid fuel source which may eventually replace cardboard as a fuel for our steam engines.
So no actually, its a lot more complicated than "continuously torturing 10 blazes in a 1x2 chamber while spraying them with healing potions to harvest their blood"