Process for the recovery of ammonia, sulfur dioxide, carbon dioxide and hydrogen sulfide from gas streams and from ammonium sulfites, sulfides and carbonates
A new process for separating and recovering volatile bases and volatile acids from their salts or their dissociation products in the liquid or gaseous state is described. A process is given for recovering ammonia and sulfur dioxide or hydrogen sulfide from, respectively, ammonium sulfites or sulfides. This process is conducted in 2 steps. In a first step, usually carried out at a moderate temperature, a salt is contacted with a less- volatile (or non-volatile) acid in a liquid phase containing at least one solvent such as hereinafter defined; during this step, the volatile acid is evolved in the gaseous state while there is formed a salt of the less- volatile acid. In a second step, which is carried out at a higher temperature and/or lower pressure than the first step, the salt resulting from the first step is decomposed. (15 claims)
- Assignee:
- TUL; EDB-81-114748
- Patent Number(s):
- US 3649190
- OSTI ID:
- 6304522
- Resource Relation:
- Patent File Date: Filed date 20 Mar 1969
- Country of Publication:
- United States
- Language:
- English
Similar Records
Removal of sulfur oxides from gas streams with ammonium sulfite
Removal of the hydrogen sulfide contained in a gas of high carbon dioxide content
Related Subjects
AMMONIA
RECOVERY
HYDROGEN SULFIDES
NATURAL GAS
PROCESSING
SULFUR DIOXIDE
AIR POLLUTION
AMMONIUM COMPOUNDS
CARBON DIOXIDE
CONTAMINATION
REMOVAL
SULFIDES
SULFITES
SULFUR
THERMODYNAMIC PROPERTIES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLLUTION
SULFUR COMPOUNDS
SULFUR OXIDES
030300* - Natural Gas- Drilling
Production
& Processing