Method for cracking residual oils

Details Method for cracking residual oils Method for cracking residual oils

1986-12-23

1989-03-28

Caldarola, Glenn

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208DIG1, 208153, C10G 3500

Patent

active

048161373

ABSTRACT:
A process is disclosed for controlling movement of a vertically movable plug valve with respect to a bottom open end of a riser conduit of a catalytic conversion apparatus during startup and shutdown. The method involves sensing the pressure between the communicating surfaces of the plug valve and the riser conduit as the riser conduit expands or contracts due to thermal changes experienced during startup and shutdown. When the riser conduit expands and causes the pressure to exceed a preselected range, the position of the plug valve with respect to the riser conduit is lowered to reduce the pressure to within the range. When the riser conduit contracts and causes the pressure to fall below the preselected range, the position of the plug valve with respect to the riser conduit is raised to prevent catalyst flow through the valve.

REFERENCES:
patent: 2071102 (1954-03-01), Jewell
patent: 2883332 (1959-04-01), Wickham
patent: 2962436 (1960-11-01), Jewell
patent: 3011969 (1961-12-01), Mader
patent: 3152064 (1964-10-01), Osborne
patent: 3290241 (1966-12-01), Wickham et al.
patent: 3378483 (1968-04-01), Worrell et al.
patent: 3578284 (1971-05-01), Martini

Affiliated with

Also associated with

Rating

Method for cracking residual oils does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for cracking residual oils, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for cracking residual oils will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1657271