Methods and apparatus for handling particulate solids

Claim 1

IN A PROCESS WHICH COMPRISES PASSING A CONFINED FLUID STREAM OF CARRIER FLUID FROM A FIRST POINT TO A SECOND POINT AND INTRODUCING A CONFINED STREAM OF PARTICULATE SOLIDS INTO CONFLUENCE WITH SAID FLUID STREAM AT A POINT INTERMEDIATE SAID FIRST AND SECOND POINTS, THE METHOD WHICH COMPRISES INTRODUCING SAID STREAM OF PARTICULATE SOLIDS SUBSTANTIALLY CONCENTRICALLY INTO A FLOWING ANNULAR PORTION OF SAID CONFINED FLUID STREAM, INTRODUCING A PLURALITY OF STREAMS OF SECONDARY FLUID TANGENTIALLY TO SAID FLOWING STREAM OF CARRIER FLUID NEAR SAID POINT OF CONFLUENCE, EACH OF SAID PLURALITY OF STREAMS BEING INTRODUCED AT SPACED INTERVALS ALONG THE LINE OF FLOW OF SAID FLOWING STREAM OF CARRIER FLUID NEAR SAID POINT OF CONFLUENCE, PLURALITY OF STREAMS BEING ADJUSTED INDIVIDUALLY IN ORDER TO AID IN OBTAINING A SMOOTH CONFLUENCE OF SAID FLOWING STREAM OF CARRIER FLUID AND SAID STREAM OF PARTICULATE SOLIDS AND TO AID IN MINIMIZING MIGRATION OF PARTICULATE SOLIDS TO THE PERIPHERY OF SAID FLOWING STREAM OF CARRIER FLUID, SAID CARRIER FLUID BEING A HYDROCARBON TO BE CATALYTICALLY CRACKED, SAID PARTICULATE SOLIDS STREAM BEING A STREAM OF HOT FLUIDIZABLE PARTICULATE CRACKING CATALYST AND SAID SECONDARY FLUID BEING A READILY COKABLE OIL TO BE SUBSEQUENTLY CATALYTICALLY CRACKED, WHEREIN UPON INJECTION OF SAID READILY COKABLE OIL SOME CRACKING OCCURS RESULTING IN THE FORMATION OF CARBONACEOUS MATERIAL, AT LEAST A PORTION OF WHICH ADHERES TO INSIDE WALLS OF A CONDUIT CONFINING SAID CARRIER FLUID NEAR SAID POINT OF CONFLUENCE AND WHEREIN SAID CARBONACEOUS MATERIAL WHICH ADHERES TO SAID WALLS PROTECTS SAID WALLS FROM EXCESSIVE ABRASION.