| Lyondell Chemical Technology, L.P. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120095275 | Production of 1-Butene and Propylene From Ethylene - A process for producing propylene and 1-butene is disclosed. The process comprises dimerizing ethylene in the presence of a dimerization catalyst to produce a dimerization mixture comprising 1-butene and 2-butenes. The dimerization mixture is distilled to produce a 1-butene stream containing 1-butene and ethylene, a 2-butenes stream, and a heavy stream. The 2-butenes stream is reacted with ethylene in the presence of a metathesis catalyst to produce a metathesis mixture comprising propylene, ethylene, and 2-butenes. Propylene is separated from the metathesis mixture. | 04-19-2012 |
| 20120095259 | Acetic Acid Production Process - Disclosed is a method for controlling an acetic acid production process. The method comprises: (i) reacting methanol and carbon monoxide in the presence of a carbonylation catalyst, a catalyst stabilizer, methyl iodide, water, and methyl acetate to produce a reactor mixture which comprises the catalyst, the catalyst stabilizer, methanol, carbon monoxide, carbon dioxide, methyl iodide, methyl acetate, water, and acetic acid; (ii) measuring the concentration of a component of the reactor mixture by Raman spectroscopic analysis; and (iii) adjusting the component concentration in the reactor mixture in response to the measured concentration. The method of the invention is particularly useful for measuring and controlling the concentration of carbon monoxide in the reactor liquid mixture. | 04-19-2012 |
| 20120083612 | DIRECT EPOXIDATION CATALYST - The invention is a process for epoxidizing an olefin with hydrogen and oxygen in a solvent comprising acetonitrile in the presence of an quinone-acid salt and a catalyst comprising a titanium zeolite and a noble metal. The process results in higher productivity and improved selectivity to propylene oxide from hydrogen and oxygen, as compared to processes that use only a quinone. | 04-05-2012 |
| 20110147196 | Recovery of propane purge stream from a propylene oxide production process - A process for recovering a purified propane purge comprising fractionating in a first distillation column a feed stream comprising 2 to 10 wt % methanol, 5 to 20 wt % propylene, and 70 to 90 wt % propane thereby producing a first light product stream and a first heavy product stream, the first heavy product stream comprising less than 1.5 wt % propylene, and an amount of methanol that is at least 70 wt % of the methanol present in the first distillation column feed stream; and fractionating the first heavy product stream in a second distillation column at a pressure from 220 to 258 psia, thereby producing a second light product stream and a second heavy product stream, the second light product stream comprising at least 96 wt % propane and less than 1 wt. % methanol, and wherein an amount of propane present in the second light product stream is 20 to 45 wt % of the propane present in the first distillation column feed stream. | 06-23-2011 |
| 20100174099 | Propylene oxide reactor gas distribution system - A device for reacting fluids comprising:
| 07-08-2010 |
