| Patent Number |
Title Of Patent |
Date Issued |
| 7396967 |
Manufacture of xylenes using reformate |
July 8, 2008 |
| A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product having a higher xylenes |
| 7176339 |
Manufacture of xylenes using reformate |
February 13, 2007 |
| A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product having a higher xylenes |
| 6486373 |
Shape selective zeolite catalyst and its use in aromatic compound conversion |
November 26, 2002 |
| A shape-selective catalyst comprises a synthetic porous crystalline material having the structure of ZSM-5 and a composition involving the molar relationship: X.sub.2 O.sub.3 :(n)YO.sub.2, wherein X is a trivalent element, such as aluminum, boron, iron and/or gallium, preferably alum |
| 5998688 |
Xylene isomerization process using toluene co-feed |
December 7, 1999 |
| A method for minimizing the loss of xylenes in an ethylbenzene conversion/isomerization process by adding toluene to the feedstock. The concentration of toluene in the feedstock is increased by co-feeding toluene or by recycling toluene separated from the ethylbenzene conversion reac |
| 5977420 |
Dual-loop xylene isomerization process |
November 2, 1999 |
| A method for increasing the efficiency of xylene isomerization by using a two stage isomerization process. In the first stage of the process, a C.sub.9.sup.+ aromatics feedstock is subjected to ethylbenzene conversion and xylene isomerization. Non-C.sub.8 aromatics are removed from the |
| 5689027 |
Selective ethylbenzene conversion |
November 18, 1997 |
| A mixture of aromatic hydrocarbons, comprising ethylbenzene and at least one xylene, is treated to convert the ethylbenzene to compounds that may be removed from the aromatic hydrocarbon stream and to isomerize any xylenes present. The ethylbenzene conversion catalyst is one that is |
| 5689025 |
Ethylbenzene production process with ex situ selectivated zeolite catalyst |
November 18, 1997 |
| A process for ethylbenzene production that involves contacting a hydrocarbon feedstream including benzene and ethylene, under alkylation conditions, with a catalytic molecular sieve which has been modified by being ex situ selectivated with a silicon compound. The ex situ selectivati |
| 5625103 |
Continuous toluene disproportionation process |
April 29, 1997 |
| There is provided a continuous toluene disproportionation process to selectively produce para-xylene. The process includes a steady-state of operation, wherein the conversion of toluene and selectivity to para-xylene is maintained at essentially constant target levels. Prior to such |
| 5516956 |
Dual bed xylene isomerization |
May 14, 1996 |
| A mixture of aromatic hydrocarbons, comprising ethylbenzene and at least one xylene, is isomerized using a two component catalyst system to convert the ethylbenzene to compounds that may be removed from the aromatic hydrocarbon stream and to produce a product stream wherein the para-xyle |
| 4922840 |
Sulfur equilibrium desulfurization of sulfur containing products of combustion |
May 8, 1990 |
| A method of combustion of a sulfur-containing fuel which substantially reduces the amount of gaseous sulfur compounds which would otherwise be emitted. A sorbent is injected into products of combustion in the temperature range of about 1600-2400 K. and above resulting from the combus |
