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US 9,783,746 B2Granted
Process for improving cold flow properties and increasing yield of middle distillate feedstock through liquid full hydrotreating and dewaxing
AssigneeE. I. Du Pont de Nemours and Company
InventorsHasan Dindi, Sandeep Palit, Alan Howard Pulley, Luis Eduardo Murillo, Thanh Gia Ta, Brian Boeger
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Abstract
Novel liquid-full process for improving cold flow properties and increasing yield of middle distillate fuel feedstock by hydrotreating and dewaxing the feedstock in liquid-full reactors.
Claims18
A liquid-full process for hydroprocessing a middle distillate fuel feedstock, comprising:
- (a) contacting the feedstock with (i) a diluent and (ii) hydrogen, to produce a feedstock/diluent/hydrogen mixture, wherein the hydrogen is dissolved in the mixture to provide a liquid feed;
- (b) contacting the feedstock/diluent/hydrogen mixture with a hydrotreating catalyst in a first reaction zone, to produce a first product effluent;
- and
- (c) contacting the first product effluent with a dewaxing catalyst in a second reaction zone, to produce a second product effluent comprising naphtha and a middle distillate product;
- wherein the middle distillate product has at least one improved cold flow property compared to the middle distillate fuel feedstock and has the yield of at least 85 wt %, and wherein the middle distillate fuel feedstock comprises a range of products from the middle fraction of a crude oil barrel.
2 more elements
Dependencies are inferred from the claim text.