STONE & WEBSTER PROCESS TECHNOLOGY, INC Patent applications |
Patent application number | Title | Published |
20130130889 | PROCESS FOR MAXIMUM DISTILLATE PRODUCTION FROM FLUID CATALYTIC CRACKING UNITS (FCCU) - The present invention provides an improved fluidized catalytic cracking process coupled with a two stage regeneration process in which the activity of the circulating catalyst is independently controlled for cracking hydrocarbon feedstocks or the vapors at low severity to produce maximum light cycle oil/distillate in one riser whilst cracking recycle streams comprising heavy cycle oil (HCO), light cracked naphtha (LCN) etc. in a second riser operating at high severity to produce LPG. | 05-23-2013 |
20120253092 | METHOD AND SYSTEM FOR REMOVAL OF FOULANT PRECURSORS FROM A RECYCLE STREAM OF AN OLEFINS CONVERSION PROCESS - A post fractionation process for removing heavy hydrocarbons from the C | 10-04-2012 |
20110065973 | DOUBLE TRANSITION JOINT FOR THE JOINING OF CERAMICS TO METALS - The invention is directed to effective means for joining materials having dissimilar coefficients of thermal expansion, such as advanced ceramics with metallic compounds. Moreover, the present invention relates to furnace tubes and methods of fabricating a joint between two different materials, which is compositionally graded to provide a substantially graded coefficient of thermal expansion between the joint materials. | 03-17-2011 |
20110017639 | SEPARATING AND STRIPPING APPARATUS FOR EXTERNAL FCC RISERS - The present invention provides a compact riser separation system for Fluid Catalytic Cracking reactors possessing an external riser system wherein the riser enters the reactor from outside the reactor vessel. | 01-27-2011 |
20090269252 | Operation of catalyst withdrawal wells with packing - An improved fluidized catalyst withdrawal well containing packing or other structured internals is disclosed for improving the flow of particular solids between two apparatus, such as between a catalyst regenerator and riser reactor. | 10-29-2009 |