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Grishaev I.G.,Samoilov Research Institute for Fertilizers and Insectofungicides NIUIF
Chemical and Petroleum Engineering | Year: 2012

Designs and conditions of operation of various types of equipment employable in compound fertilizer plants are proposed. Tube reactors which preclude crust formation on their inner surface, drum granulators-driers with simultaneous delivery of pulp varying in acidity, jalousie-type apparatus with a fluidized-bed for cooling, separation, and conditioning of granules under vacuum, and scheme for separating commercial fraction of the product with minimization of screening surface have been developed. These developments are used under industrial conditions. © 2012 Springer Science+Business Media, Inc. Source


Grishaev I.G.,Samoilov Research Institute for Fertilizers and Insectofungicides NIUIF | Norov A.M.,Samoilov Research Institute for Fertilizers and Insectofungicides NIUIF
Chemical and Petroleum Engineering | Year: 2011

A calculation procedure is developed for the productivity of a drum granulator and dryer (DGD) in ammonium phosphate production. It is shown that it determines the permissible heat carrier moisture content and ammonia content within it. These parameters are connected through the original phosphoric acid concentration. A dependence is observed experimentally under industrial conditions for product consolidation on ammonification time in a tubular reactor. A mechanism is proposed for "lamellar" granule formation, affecting ammonium phosphate quality. Drying regimes and granulation are recommended, minimizing the "lammelar" granule content of the product. © 2011 Springer Science+Business Media, Inc. Source


Grishaev I.G.,Samoilov Research Institute for Fertilizers and Insectofungicides NIUIF | Norov A.M.,Samoilov Research Institute for Fertilizers and Insectofungicides NIUIF
Chemical and Petroleum Engineering | Year: 2013

A procedure is proposed for analysis of a system for production of mineral fertilizers, which includes two stages of acid ammonization in fast and tub reactors with subsequent drying and granulation in a rotating drum. The concentration of initial acid that ensures the technologically required content of water and ammonia in the spent drying agent is selected on the basis of analysis. © 2013 Springer Science+Business Media New York. Source


Grishaev I.G.,Samoilov Research Institute for Fertilizers and Insectofungicides NIUIF | Gordin A.A.,Samoilov Research Institute for Fertilizers and Insectofungicides NIUIF
Chemical and Petroleum Engineering | Year: 2010

Processes of cooling of various loose (granular) materials in industrial rotary drums, fluidized-bed apparatuses, conductive plate heat exchangers, etc., have been investigated. Methods have been recommended for cooling heat carriers (heat-transfer agents), as applies to specific production conditions. Designs of coolers-separators and coolers-conditioners for powdery and granular products have been developed. © 2010 Springer Science+Business Media, Inc. Source

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