Abstract: Methods and systems for ammonia production are provided. An exemplary method includes electrolyzing water to form H2 and O2; contacting a reformer feed stream including hydrocarbons, O2 from electrolysis, and an oxidant stream including O2 and N2 to form a reformed stream including H2, CO, CO2, and N2; contacting the reformed stream with a water-gas shift catalyst to form a shifted stream including H2, CO2, and N2; separating the shifted stream to form a captured stream including CO2 and an ammonia production feed stream including H2 and N2; and reacting the ammonia production feed stream, and optionally H2 from electrolysis, to form ammonia.

Abstract: Method of producing pyrolysis products from mixed plastics along with an associated system for processing mixed plastics. The method includes conducting pyrolysis of a plastic feedstock to produce plastic pyrolysis oil; feeding the plastic pyrolysis oil to a first fractionator to separate the plastic pyrolysis oil into a distillate fraction including naphtha and diesel and a vacuum gas oil fraction; and feeding the distillate fraction to a three step hydrotreating operation. The three step hydrotreating operation includes feeding the distillate fraction to a first hydrotreating unit to remove di-olefins to produce a first product stream, feeding the first product stream to a second hydrotreating unit to remove mono-olefins to produce a second product stream; and feeding the second product stream to a third hydrotreating unit to remove sulfur and nitrogen by hydrodesulfurization and hydrodenitrogenation to produce a third product stream. Such system may be integrated with a conventional refinery.

Abstract: The present invention provides a method and system for separating CO2 from a gas stream containing CO2. A gas stream having an initial pressure is compressed and subsequently cooled. The compressed and cooled gas stream has an increased pressure and reduced temperature at which the CO2 in the gas stream is at least partially converted to the liquid phase. The liquid phase is separated from the compressed and cooled gas stream, to provide a liquid phase stream and a gas phase stream, wherein the output pressure of the liquid phase stream is higher than the initial pressure of the gas stream.