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Title Advantages in energy, fuel, and investment savings by melt-type granulation processes
Creator/Author Young, R.D. ; Lee, R.G.
Publication Date1975 Jan 01
OSTI IdentifierOSTI ID: 6814484
Report Number(s)CONF-751275-1
Resource TypeConference
Specific TypeTechnical Report
Resource RelationTechnical conference of International Superphosphate and Compound Manufacturers Association Limited and the Fertilizer Association of India; 8 Dec 1975; New Delhi, India
Research OrgTennessee Valley Authority, Muscle Shoals, AL (USA). Div. of Chemical Development
Subject320303 -- Energy Conservation, Consumption, & Utilization-- Industrial & Agricultural Processes-- Equipment & Processes; ;FERTILIZER INDUSTRY-- ENERGY CONSUMPTION;FERTILIZERS-- MANUFACTURING; ECONOMICS;FUELS;INVESTMENT;PHOSPHORUS OXIDES;TENNESSEE VALLEY AUTHORITY;USA
Related SubjectCHALCOGENIDES;INDUSTRY;NATIONAL ORGANIZATIONS;NORTH AMERICA;OXIDES;OXYGEN COMPOUNDS;PHOSPHORUS COMPOUNDS;US ORGANIZATIONS
Description/Abstract Melt-type processes developed by TVA, in which wet-process phosphoric acid provides all or most of the P/sub 2/O/sub 5/ in granular fertilizers, show promise in decreasing fuel, total energy, investment, and operating cost.^The analyses and estimates were based on pilot-plant studies and demonstration-plant experience at TVA`s National Fertilizer Development Center, Muscle Shoals, Alabama.^It is shown that elimination of fuel for drying and substantially decreased horsepower requirements (particularly in a new plant) would decrease energy requirement in the granulation plant by about 1,000,000 Btu`s per metric ton of P/sub 2/O%.^When coupled with lower operating costs that are based on investment factors, the savings for the granulation plant is indicated to be about $6 per metric ton of P/sub 2/O/sub 5/ for a melt-type ammonium phosphate plant.^As explained in the text, there would be just about a tradeoff in energy required for drying in a conventional ammonium phosphate granulation plant (where wet-process acid also is produced) against the equivalent steam that would be needed to concentrate the feed acid from 40% P/sub 2/O/sub 5/ to 52 to 54% P/sub 2/O/sub 5/ for use in melt-type granulation.^This would decrease the overall estimated savings for a melt-type ammonium phosphate granulation plant to about $3.65 per metric ton P/sub 2/O/sub 5/.^In the case of NPK granulation plants using 52 to 54% P/sub 2/O/sub 5/ acid shipped in, the full indicated savings of about $5.10 per metric ton nutrient should be realized.^Savings in existing and new plants are indicated.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 31
AvailabilityNTIS, PC A03/MF A01.
System Entry Date2001 May 13

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