P9501 – Revamp of J. R. Simplot Phosphoric Acid Plant
Paper P9501 – View PDF
Details: Presented at Regional Phosphate Conference, Lakeland, Florida.
Date: May 1995
Authors: P. J. Hutter, J. Samuelson, M. D. Walters and C. B. Earl
A rock slurry pipeline was installed at Simplot’s phosphoric acid and began using uncalcined rock slurry. There were problems with P2O5 losses from the flash coolers and scaling in the flash cooler piping. A flash cooler pre-condenser and new vacuum pump system were added and the flash cooler piping and pump modified. The cooling limitation was removed, P2O5 losses were reduced, and significant energy savings were made. Total annual savings of $1.3m were made for an expenditure of about $2m.
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P9402 – Cooling Ponds and Gypsum Stacking, Past – Present – Future
Paper P9402 – View PDF
Details: Presented at Regional Phosphate Conference, Lakeland, Florida.
Date: October 1994
Authors: C. B. Earl and M. D. Walters
Are existing phosphoric acid plant cooling ponds an asset or a liability? The use of cooling towers is presented as an alternative to the Central Florida practice of using cooling ponds. The GREEN process (Gypsum Repulp with Enhanced Elutriation and Neutralization) is described. Plant closure costs can be reduced and P2O5 “mined” from the ponds during the operating life of the plant.
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P9301 – Plant Air Quality Improvement Projects at J. R. Simplot
Paper P9301 – View PDF
Details: Presented at Regional Phosphate Conference, Lakeland, Florida.
Date: October 1993
Authors: M. D. Walters and K. J. Hutter
This paper discusses the 1993 installation of phosacid filter and tank farm fume collection and scrubbing system at the J.R. Simplot fertilizer plant in Pocatello, Idaho. The installation of two new cross flow scrubbing systems resulted in greatly reduced peak concentration of Total Reduced Sulfide (TRS) compounds in the immediate plant vicinity
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P9201 – An Integrated Approach to Process Wastewater Management
Paper P9201 – View PDF
Details: Presented at Phosphate Fertilizer and the Environment, IFDC, Tampa, Florida.
Date: March 1992
Authors: C. B. Earl
Long-term management of process wastes from phosphate mining and chemical processing can be achieved in an environmentally sound manner through integration of the process operations. The proposed Pine Level project is discussed. The project scope is a 4.9 million t/y phosphate mine, 1.1 million t/y P2O5 fertilizer site, 2.3 million t/y Portland cement plant, and a 600 MW coal-fired power plant.
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P8701 – Phosphogypsum Recycle
Paper P8701 – View PDF
Details: AIChE Annual Meeting; Clearwater, Florida.
Date: May 1987
Authors: T. J. Kendron , J. H. Marten, and G. M. Lloyd
Davy McKee Corporation (DMC) and the Florida Institute of Phosphate Research (FIPR) have developed a process to recover the sulfur values from phosphogypsum and produce a saleable, solid by-product. Freeport McMoRan has announced that they will build and operate a test plant using the DMC/FIPR process at their Uncle Sam phosphate complex in Louisiana.
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P8604 – Phosphogypsum to Sulfuric Acid with Cogeneration – A Competitive Edge
Paper P8604 – View PDF
Details: Presented at the International Symposium on Phosphogypsum, Miami, Florida
Date: December 1986
Authors: T. J. Kendron and G. M. Lloyd
Davy McKee Corporation (DMC) and the Florida Institute of Phosphate Research (FIPR) have demonstrated a practical process to thermally decompose phosphogypsum and produce sulfuric acid and a saleable, solid byproduct. The process would use the commercially proven DMC circular grate used in over 60 commercial grate designs. A successful phosphogypsum decomposition process will control the costs of sulfuric acid and reduce the impact of phosphogypsum deposits on the environment.
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P8601 – Analysis of Design Options in Modern Granulation Plants
Paper P8601 – View PDF
Details: Presented at AIChE National Meeting, New Orleans, LA
Date: April 1986
Authors: M. D. Walters and J. V. Galluzzo
Granular ammonium phosphate fertilizers represent a significant portion of the finished fertilizers in use today. Competitive markets and poor economic conditions provide an economic incentive to examine new and old process configurations in an effort to minimize costs and maximize productivity. The major design options proposed or installed are examined for their merit on the basis of the complete mass and energy balance using a proprietary computer program.
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