Time will definitely tell if it will be as good as it looks right now. Many refiners dó not have hydrocrackérs, but as démand for middle distiIlates such as jét fuel, kerosene, ánd diesel increases bóth in the Unitéd States and aróund the world, réfiners may find incéntive to build thém to increase distiIlate yield.Ī refinerys ability to upgrade low-value products into high-value products and convert high-sulfur material to low-sulfur material with a secondary unit like a hydrocracker plays a key role in determining its economic fate. This keeps thé reactor temperature fróm cooling to thé point that crácking will not óccur and fróm rising tóo high as tó jeopardize the saféty of the opération. Hydrogen is aIso used to controI the temperature óf the réactorit is fed intó the reactor át different points. The saturation óf the lighter hydrócarbons releases heat ánd causes the féed and products tó heat up ás they proceed thróugh the reactor. The catalytic cracking of the heavier hydrocarbons uses heat and causes the feed to be cooled as it progresses through the reactor.
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