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1. (WO2018197139) METHOD AND DEVICE FOR PRODUCING A GRANULATE

Pub. No.:    WO/2018/197139    International Application No.:    PCT/EP2018/057762
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Mar 28 01:59:59 CEST 2018
IPC: B01J 2/16
Applicants: thyssenkrupp Industrial Solutions AG
THYSSENKRUPP AG
Inventors: BANIK, Peter
BOROWEC, Dennis
MATHIAK, Jens, Dr.
MIKAUTSCH, Daniel
RENK, Christian, Dr.
Title: METHOD AND DEVICE FOR PRODUCING A GRANULATE
Abstract:
The invention relates to a method for producing a granulate, in particular a fertilizer granulate, wherein the granulate is produced by granulation in a fluidized-bed granulator, wherein at least one aqueous composition or melt containing at least one ingredient of the granulate to be produced is sprayed onto a fluidized bed of fluidized granulate germs by way of spray nozzles (3, 22a, 22b, 22n). According to the invention, a partial-load operation is provided, in which the supply of at least one individual spray nozzle (3) or at least one group of spray nozzles (3, 22a, 22b, 22n) with the aqueous composition to be sprayed is switched off separately from the remaining spray nozzles. One advantage of the method is that the method allows to compensate for fluctuations in the amount of ingredients obtained for the aqueous solution or melt to be sprayed on, ammonium sulfate, for example, which is obtained as a by-product in the process exhaust gas purification during the neutralization process of ammonia with sulfuric acid.