公开(公告)号：JPH0211635B2

公开(公告)日：1990-03-15

申请号：JP3300985

申请日：1985-02-22

Applicant: CONOCO INC

Inventor： WAADO BII DEIBISU ,  JON SHII TOOMASU ,  CHAARUZU DABURYU ARUWAASU

IPC: C10B57/04 ,  C10B33/00 ,  C10B41/06 ,  C10B43/08

Abstract: Method and Apparatus for automated hydro-blast de-coking of delayed coke drums wherein programmed central control (12) receives input of drill stem tension, drill bit elevation and drill stem rotation along with indications as to hydraulic hoist power and air pressure input to the drill stem rotary motor, and functions to provide control outputs to automatically control the pilot and main bed cutting procedures attendant an entire drum de-coking operation.