Patents Assigned to Stone & Weber, Inc.
  • Process for preparing ethylbenzene using vapor phase alkylation and liquid phase transalkylation
    Patent number: 8217214
    Abstract: Disclosed are ethylbenzene processes in which a series-arranged or combined vapor phase alkylation/transalkylation reaction zone is retrofitted to have a vapor phase alkylation reactor and a liquid phase transalkylation reactor, and in which a parallel-arranged vapor phase alkylation reactor and vapor phase transalkylation reactor is retrofitted to have a vapor phase alkylation reactor and liquid phase transalkylation reactor, wherein the xylenes content of the ethylbenzene product is less than 700 wppm.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: July 10, 2012
    Assignees: ExxonMobil Chemical Patents Inc., Stone & Weber, Inc.
    Inventors: Michael C. Clark, Vijay Nanda, Carlos N. Lopez, Brian Maerz, Maruti Bhandarkar