Process for the production of ammonia

Patent · Tue Jun 18 04:00:00 EDT 1985

OSTI ID:6364372

Banquy, D

A process for the production of ammonia, comprising the steps of: gasifying a feedstock containing carbon and a source of hydrogen with air as the only source of free oxygen, to produce a raw synthesis gas comprising nitrogen, hydrogen, carbon oxides, and methane; subjecting the raw synthesis gas to a shift conversion reaction; removing the carbon oxides from the shift converted raw synthesis gas to produce a purified synthesis gas; mixing the purified synthesis gas with a hydrogen-rich gas to form a final synthesis gas; injecting the final synthesis gas into an ammonia synthesis loop to produce ammonia and a purge gas; separating the purge gas cryogenically, to produce a methane-rich gas, a nitrogen-rich gas, and the hydrogen-rich gas; and recycling the hydrogen-rich gas to step. The methane-rich stream is at least partially recycled to step. Sulfur compounds, if necessary, may be removed from the raw synthesis gas.

• Assignee: Foster Wheeler Energy Corporation
• Patent Number(s): US 4524056
• OSTI ID: 6364372
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
AIR
ALKANES
AMMONIA
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CRYOGENICS
DESULFURIZATION
ELEMENTS
FLUIDS
GASES
GASIFICATION
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
METHANE
NITROGEN
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PRODUCTION
SEPARATION PROCESSES
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES