Abstract
Texasgulf, at its Lee Creek, NC facility, has converted its Dorrco GTSP plant to alternate production of MAP, 11-52-0, or 11-55-0. The use of a TVA 10 inch Pipe Reactor has resulted in high ammoniation efficiencies, low emissions of fluorine and ammonia and completely satisfactory products. The Pipe Reactor, currently not used widely for MAP at capacities above 50 TPH, has advantages in being able to use high strength acid, resulting in low recycle and high capacity, with emissions well below Florida and EPA Standards.
At Texasgulf, relative low strength acid (38% to 43% P2O5) is used. In this case, virtually all the available reaction heat is released into the granulator to raise the granulator temperature and maximize moisture elimination.
The paper discusses the current state-of-the-art in Pipe Reactor processing, particularly in North America, compares alternate processes for MAP and discusses the operation of DAP using the Pipe.
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References
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Leyshon, D.W., Day, D.P. Map manufacture using the pipe reactor. Fertilizer Research 31, 119–129 (1992). https://doi.org/10.1007/BF01064234
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DOI: https://doi.org/10.1007/BF01064234