Improved Essentia Distillation is a research option in the Alchemy tab that becomes available for after purchasing Advanced Essentia Tubes. Completing the research allows one to further augment Essentia Smelteries to increase their usability. This research adds an additional 2 ways to do this.
Auxiliary Slurry Pump
The Auxiliary Slurry Pump can be added to any of the three open sides of an Essentia Smeltery to allow for the placing of extra Alembics over it. This allows for not only the storage of more Essentia within the Smeltery system itself, but not the internal buffer, but also helps to increase the speed at which Essentia can be distilled. It can be created at an Arcane Workbench with 2 Greatwood planks, Brass Plates and iron ingots in the left and right sections of the crafting grid, placed from the top down in their given order, an Essentia Filter, an Alchemical Construct, and Arcane Bellows in the same top down order as the prior materials in the middle section of the crafting grid, along with 25 Terra Vis, and 50 Aqua and Aer Vis.
Auxiliary Venting Port
The Auxiliary Venting Port can be added to any three of the open sides of an Essentia Smeltery to decrease the amount of Flux created when aspects are not successfully converted into Essentia. A single port decreases the amount of Flux produced by approximately 1/3rd, but the more ports that are added, the less the effect of each. The Auxiliary Venting Port is very useful for helping to maintain low levels of Flux in the Aura as to prevent the nasty effects of too much building in one area. The Auxiliary Venting Port can be created in an Arcane Workbench with 4 iron ingots in every corner, 2 Brass ingots in the middle top and bottom sections, an Alchemical Construct in the center, a Morphic Resonator in the left middle section, and an Essentia Filter in the right middle section, along with 100 Ordo Vis and 125 Aer and Aqua Vis.