Urea-ammonium sulfate suspension fertilizers: bench-scale and pilot-plant studies. TVA Circular Z-141

Conference · Fri Jan 01 00:00:00 EST 1982

OSTI ID:6603424

Boles, J. L.; Jones, T. M.

Soils in many areas of the world are deficient in sulfur because of the increasing use of high-analysis, low-sulfur fertilizers and emphasis on pollution control. Therefore, TVA is developing a process for production of a 29-0-0-5S urea-ammonium sulfate suspension as one answer to this sulfur deficiency problem. The production equipment consists essentially of a boiling-type tank reactor and two coolers. Urea-water solution, sulfuric acid, ammonia, and water are feed materials. The reactor effluent is cooled to slightly above saturation temperature and suspending clay is added. Finally, the product is rapidly cooled further in a second-stage cooler to obtain an abundance of small crystals. Product concentration and cooling procedure are primary factors affecting product quality and the process. When pilot-plant studies are complete, TVA plans design and construction of a 25-ton-per hour (23 t/h) production unit. 4 figures, 5 tables.

• Research Organization: National Fertilizer Development Center, Muscle Shoals, AL (USA)
• OSTI ID: 6603424
• Report Number(s): TVA/PUB-83/11; CONF-820909-10; ON: DE83900461
• Resource Relation: Conference: National meeting of the American Chemical Society, Kansas City, MO, USA, 1 Sep 1982
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
AMMONIUM SULFATES
PRODUCTION
FERTILIZERS
UREA
AMMONIA
BENCH-SCALE EXPERIMENTS
CHEMICAL REACTORS
EXPERIMENTAL DATA
FLOWSHEETS
MIXTURES
PILOT PLANTS
SULFURIC ACID
TENNESSEE VALLEY AUTHORITY
WATER
AMIDES
AMMONIUM COMPOUNDS
CARBONIC ACID DERIVATIVES
DATA
DIAGRAMS
DISPERSIONS
FUNCTIONAL MODELS
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
NATIONAL ORGANIZATIONS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
SULFATES
SULFUR COMPOUNDS
US ORGANIZATIONS
553000* - Agriculture & Food Technology