Low pressure noncryogenic processing for ethylene recovery
This patent describes a process for recovering ethylene from a hydrocarbon gas feed stream containing components selected from the group consisting of hydrogen, nitrogen, methane, carbon monoxide, at least 5 mol % of ethylene, ethane, heavier saturated and unsaturated hydrocarbons and mixtures. It comprises: countercurrently contacting the hydrocarbon gas feed stream with a lean physical solvent. It comprises paraffinic solvents; naphthenic solvents; benzene, toluene, C{sub 8}--C{sub 10} aromatic compounds; dialkyl ethers of polyalkylene glycol; regenerating the ethylene rich solvent in a distillation column equipped with at least one reflux condenser and at least one reboiler to produce ethylene plus hydrocarbon product as an overhead stream and the lean physical solvent as a bottom stream, the ethylene plus hydrocarbon product being suitable for bypassing a downstream demethanizer.
- Assignee:
- NOV; EDB-92-020993; NOV-91-026031
- Patent Number(s):
- A; US 5019143
- Application Number:
- PPN: US 7-211466
- OSTI ID:
- 5913076
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
09 BIOMASS FUELS
090900 -- Biomass Fuels-- Processing-- (1990-)
ALKANES
ALKENES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
ETHANE
ETHYLENE
EXTRACTION
HYDROCARBONS
HYDROGEN
MANAGEMENT
MATERIALS RECOVERY
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PROCESSING
RECOVERY
REFINING
SEPARATION PROCESSES
SOLVENT EXTRACTION
WASTE MANAGEMENT
WASTE PROCESSING