Apparatus and process for catalytic reforming with continuous sulfur removal
This patent describes a method for continuously removing residual sulfur from a naphtha stream to be fed to a reformer. This method consists of passing the naphtha stream through entrance duct means through a primary absorber and thence through exit duct means leading to a reformer, the primary absorber having a charge of manganous oxide disposed therein, until the weight of sulfur passed through the primary absorber exceeds a predetermined amount of from about 5 to about 30 of the weight of the charge of manganous oxide; then simultaneously passing a portion of the naphtha stream through a by-pass absorber having a charge of manganous oxide disposed therein; the entrance duct means having a least one entrlocatable in the entrance duct means between the primary absorber and the entrance double seat double gate wedge valve means disposed therein for interrupting flow through the primary absorber and at least one entrance seal collar means mounted on the entrance duct means adapted to receive a blind seal plate means mountable thereon, locatable in the entrance duct means between the primary absorber and the entrance seal double seat double gate wedge valve means; removing naphtha from the primary absorber through the exit duct means for withdrawing desulfurized naphtha from the primary absorber, the exit duct means having at least one exit seal double seat double gate wedge valve means disposed therein for interrupting flow through the primary absorber and at least one exit seal collar means mounted on the exit duct means adapted to receive a blind seal plate means mountable thereon; and means for diverting flow of naphtha through the by-pass absorber while the entrance seal and exit seal double seat double gate wedge valve means are in their closed position, subsequently interrupting flow through the entrance and exit duct means by closing the entrance seal and exit seal double seat double gate wedge valves.
- Assignee:
- Engelhard Corp., Menlo Park, NJ
- Patent Number(s):
- US 4575415
- OSTI ID:
- 5865717
- Resource Relation:
- Patent File Date: Filed date 18 Jan 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Related Subjects
NAPHTHA
CATALYTIC REFORMING
DESULFURIZATION
SULFUR
REMOVAL
ABSORPTION
DUCTS
MANGANESE OXIDES
NITROGEN
QUANTITY RATIO
SEALS
VALVES
CHALCOGENIDES
CHEMICAL REACTIONS
COAL TAR OILS
CONTROL EQUIPMENT
DISTILLATES
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FOSSIL FUELS
FUELS
MANGANESE COMPOUNDS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
REFORMER PROCESSES
TRANSITION ELEMENT COMPOUNDS
020400* - Petroleum- Processing