Method for removing coronene from heat exchangers

Patent · Tue Jul 29 04:00:00 EDT 1980

OSTI ID:6821565

Kmak, W

A method for removing a coronene deposit in a reforming process is described that consists of (A) contacting a hydrocarbonacous feedstock with a catalyst in the presence of added hydrogen at reforming conditions in a reforming zone; (B) splitting the total reforming zone effluent into a first stream and a second stream; (C) passing said first stream into a first train of heat exchangers arranged in parallel with a second train of heat exchangers; (D) passing said second stream into said second train of heat exchangers, said reforming zone effluent comprising coronene, at least a portion of which deposits in said heateexchangers; (E) separating the heat exchanged total reforming zone effluent into a hydrogen-rich gaseous phase and a liquid hydrocarbon phase comprising normally liquid hydrocarbons and normally gaseous hydrocarbons, the improvement which comprises reducing the flow of said first stream in said first train of heat exchangers to produce a temperature sufficient to condense at least a portion of said reformer effluent therein such that the resulting condensate contacts said coronene deposit, and simultaneously increasing the flow of said second stream in said second train of heat exchangers.

• Assignee: Exxon Research and Engineering Co
• Patent Number(s): US 4214976
• OSTI ID: 6821565
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
AROMATICS
BOILING POINTS
CATALYSTS
CHEMICAL REACTIONS
CLEANING
COAL TAR OILS
CONDENSATES
CONTROL EQUIPMENT
DEPOSITS
DISTILLATES
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUELS
HEAT EXCHANGERS
HYDROCARBONS
HYDROGEN
LIQUIDS
NAPHTHA
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PHYSICAL PROPERTIES
POLYCYCLIC AROMATIC HYDROCARBONS
REFORMER PROCESSES
REMOVAL
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VALVES