Abstract A grid system for a catalytic reactor allowing catalyst to be discharged on shut down through the normal product outlet comprises a cylindrical or rectangular grid covering the outlet open at at least the outlet end, a shield adjacent the grid into which the grid can fit and means for moving the grid into and out of the shield and an extension of the grid into the outlet to position it and guide it when moved. The means for moving the grid is preferably external to the reactor and may be a rod passing through the outlet into contact with the grid or its extension. The grid system is particularly suitable for large reactors requiring relatively frequent catalyst replacement, eg. residue desulphurisation reactors.
Inventors
👤 Leslie Alcock
👤 James Ford
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-08 22:48
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A GRID SYSTEM FOR A CATALYTIC REACTOR OUTLET COMPRISING CYLINDRICAL OR RECTANGULAR SHAPED GRID ADAPTED TO SEAL THE OUTLET TO PREVENT THE PASSAGE OF CATALYST AND OPEN AT AT LEAST THE END THEREOF NEAREST THE OUTLET, A SHIELD LOCATED ADJACENT THE GRID SAID SHIELD BEING ADAPTED AND ARRANGED TO RECEIVE SAID GRID THEREIN AND KEEP THE SPACE ABOVE AND AJACENT THE GRID FREE OF CATALYST THEREBY TO ALLOW THE GRID TO BE MOVED EASILY, SAID GRID HAVING AN EXTENSION EXTENDING INTO THE OUTLET TO POSITION THE GRID IN COAXIAL ALIGNMENT WITH SAID OUTLET, AND MEANS LOCATED IN SAID OUTLET FOR MOVING THE GRID FROM THE SEAL
Claim 2
Dependent Claim
106 words
A GRID SYSTEM FOR A CATALYTIC REACTOR OUTLET COMPRISING CYLINDRICAL OR RECTANGULAR SHAPED GRID ADAPTED TO SEAL THE OUTLET TO PREVENT THE PASSAGE OF CATALYST AND OPEN AT AT LEAST THE END THEREOF NEAREST THE OUTLET, A SHIELD LOCATED ADJACENT THE GRID SAID SHIELD BEING ADAPTED AND ARRANGED TO RECEIVE SAID GRID THEREIN AND KEEP THE SPACE ABOVE AND AJACENT THE GRID FREE OF CATALYST THEREBY TO ALLOW THE GRID TO BE MOVED EASILY, SAID GRID HAVING AN EXTENSION EXTENDING INTO THE OUTLET TO POSITION THE GRID IN COAXIAL ALIGNMENT WITH SAID OUTLET, AND MEANS LOCATED IN SAID OUTLET FOR MOVING THE GRID FROM THE SEAL
Claim 3
Dependent Claim
22 words
A grid system for a catalytic reactor outlet as claimed in claim 1 wherein the extension of the grid is a fin.
Claim 4
Dependent Claim
26 words
A grid system for a catalytic reactor outlet as claimed in claim 1 wherein the end of the shield nearest the grid overlaps with the grid.