Phosphoric acid process engineering

Before starting to describe particular industrial processes, it should be noted that each process is based on information supplied by a different engineering and construction organization. Each of the organizations offers a range of processes to meet various dient needs. In addition, several other companies, not mentioned, offer phosphoric acid processes, and there is no intention of implying that processes offered by the companies mentioned by name are necessarily superior to those offered by other companies and does not imply any kind of endorsement by UNIDO or DFDC. 

Hurst, F.J., Crouse, D.J. Brown, K.B. (1972) Recovery of uranium finm wet-process phosphoric acid Industrial Engineering Chemistry Process Design and Development, 11 (1), 122-128. 

Dutch State Mines (Stamicarbon). Vapor-phase, catalytic hydrogenation of phenol to cyclohexanone over palladium on alumina, Hcensed by Stamicarbon, the engineering subsidiary of DSM, gives a 95% yield at high conversion plus an additional 3% by dehydrogenation of coproduct cyclohexanol over a copper catalyst. Cyclohexane oxidation, an alternative route to cyclohexanone, is used in the United States and in Asia by DSM. A cyclohexane vapor-cloud explosion occurred in 1975 at a co-owned DSM plant in Flixborough, UK (12) the plant was rebuilt but later closed. In addition to the conventional Raschig process for hydroxylamine, DSM has developed a hydroxylamine phosphate—oxime (HPO) process for cyclohexanone oxime no by-product ammonium sulfate is produced. Catalytic ammonia oxidation is followed by absorption of NO in a buffered aqueous phosphoric acid... 

Bock, J. Klein, R.R. Valint, P.L. Ho, W.S. Liquid membrane extraction of uranium from wet process phosphoric acid. In Sulfuric/Phosphoric Acid Plant Operations American Institute of Chemical Engineers New York, 1982 175-183. 

Amin, A.B. and Larson, M.A. (1968) Crystallization of calcium sulphate from phosphoric acid. Industrial and Engineering Chemistry Process Design and Development, 7, 133-137. 

Kouloheris, A. P. 1979. Uranium Recovery from Phosphoric Acid (a Process Engineering Review), Proceedings No, 187. The Fertiliser Society, London, England. 

Bock, J. Valint, P.L., Jr. (1982) Uranium extraction from wet process phosphoric acid. A liquid membrane approach. Industrial Engineering Chemistry Fundamentals, 21 (4), 417-422. 

Fig. 10.4. Gardinier phosphoric acid plant, 1500 TPD, Jacobs process. (Courtesy Jacobs Engineering Group, Inc.)...

BIPROKWAS Engineering, Ltd., Gliwice, Poland, oF fers a single-reactor dihydrate process with capacities of 30,000- to 200,000-tpy per train. The prc uct is 54% P2O5 acid containing about 1.5% F. BIPROKWAS has built eight phosphoric add trains and revamped two, the latest a 160,000-tpy unit. 

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