Hydrolysis of hydrogen cyanide in ammonia liquors
A thermodynamic analysis was performed on the conversion of hydrocyanic acid to anhydrous ammonia in concentrated ammonia liquors obtained from overall purification schemes used for coke oven gas. The temperature range of treatment (90 to 140/sup 0/C) was chosen in view of the standard low pressure (to 588 kPa) available for the process, and with consideration for the industrial liquor regeneration regime. Samples were collected while retaining the liquor in the reactor without agitation at a constant temperature. Changes in the HCN concentration as a function of retention time are described by logarithmic functions. An effective rate constant was calculated. Results show that in comprehensive schemes for gas treatment by cyclic methods with production of anhydrous ammonia and with ammonia, sulfur and cyanide removal, the principal part of the HCN extracted from the gas in the regneration of the wash liquors and treatment of the NH/sub 3/ liquors will be hydrolyzed at high temperature, and the hydrolysis products will be removed. 4 figures, 1 table.
- OSTI ID:
- 5264101
- Journal Information:
- Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 2; ISSN COKCA
- Country of Publication:
- United States
- Language:
- English
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10 SYNTHETIC FUELS
ACTIVATION ENERGY
AMMONIA
AQUEOUS SOLUTIONS
ASIA
CALCULATION METHODS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL GAS
CYANIDES
DATA
DECOMPOSITION
DISPERSIONS
EASTERN EUROPE
ENERGY
EUROPE
EXPERIMENTAL DATA
FLUIDS
GASES
HIGH TEMPERATURE
HYDRIDES
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROLYSIS
INFORMATION
INORGANIC ACIDS
KINETICS
LEAST SQUARE FIT
LYSIS
MANAGEMENT
MAXIMUM-LIKELIHOOD FIT
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
NUMERICAL SOLUTION
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PRESSURE DEPENDENCE
PURIFICATION
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SAMPLING
SOLUTIONS
SOLVOLYSIS
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
THERMODYNAMICS
USSR
WASTE MANAGEMENT
WATER
YIELDS