Process for manufacture of ammonia

Patent · Tue Jun 10 00:00:00 EDT 1986

OSTI ID:5482479

Parrish, R W

An improved process is described for making synthetic ammonia wherein a make-up synthesis gas is added to recycled unreacted gas from the catalytic conversion loop including the steps of introducing a volatile anti-icing compound into the hot make-up gas to vaporize the compound, cooling the gas and vaporized anti-icing compound to condense part of the anti-icing compound, separating the condensed anti-icing compound and dissolved impurities from the make-up gas. Further cooling the make-up gas to a temperature at which the remaining anti-icing compound condenses essentially completely, separating the condensing remaining anti-icing compound from the make-up gas, mixing the resulting make-up gas at the low temperature with liquid ammonia to saturate the make-up gas with ammonia, separating unvaporized liquid ammonia from the saturated make-up gas, mixing the saturated make-up gas with recycle and passing the mixed gases directly to the catalytic ammonia synthesis converter.

• Assignee: NOV; NOV-85-014987; EDB-86-149068
• Patent Number(s): US 4594233
• OSTI ID: 5482479
• Resource Relation: Patent File Date: Filed date 4 Jan 1985
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
AMMONIA
CHEMICAL PREPARATION
ANTIFREEZE
CATALYSIS
COOLING
EVAPORATION
IMPURITIES
MIXING
PURIFICATION
RECYCLING
SATURATION
SYNTHESIS GAS
TEMPERATURE CONTROL
VAPOR CONDENSATION
CONTROL
FLUIDS
GASES
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
PHASE TRANSFORMATIONS
SYNTHESIS
090320* - Inorganic Hydrogen Compound Fuels- Preparation- (1976-1989)