原始名称记载: UOP LLC

A control process and apparatus provide feed forward control of stoichiometric proportions of hydrogen sulfide and ammonia to a thermal oxidizer and an ammonia scrubber, respectively. To account for unmeasured or uncalculated sulfur feed to the thermal oxidizer, a feed back measurement of sulfur dioxide and ammonia concentration is used to correct the flow rate of hydrogen sulfide to the thermal oxidizer and/or ammonia to the ammonia scrubber.

Methods and apparatus for upgrading renewable oils stream are described. The method involves using a cooling stream surrounding the tip of the renewable feed line to prevent polymerization/coking. The cooling stream, which comprises gases or liquids that can be converted to valuable products such as olefins, flows into the FCC reaction zone where it mixes with the FCC feed stream and the renewable oil. The renewable oil can be atomized with an atomizing gas.

A process for dehydration of ethanol to produce ethylene is provided. Ethanol is dehydrated to produce ethylene and the subsequent conversion of ethylene to longer chain olefins and then their hydrogenation to produce long chain paraffins. In some embodiments, a split feed is employed to improve efficiency and a caustic wash column is eliminated. The advantages of the process include a lower requirement for steam and a reduction in the combined reactor volume of 30-40% when two reactors are used as compared to a single reactor.

A process for oligomerizing olefins to distillate fuels in the presence of a diluent for absorbing the exotherm. Oligomerization may comprise oligomerizing a charge olefin stream in a first-stage oligomerization reactor which is oligomerized in a second-stage oligomerization reactor to provide an oligomerate stream. The oligomers are hydrogenated and stripped to provide a stripped distillate stream. The diluent may be taken from the stripped distillate stream.