FERTILIZER UREA-BASED COMPOSITIONS COMPRISING SULFUR AND PROCESS AND SYSTEM THEREOF

    公开(公告)号:EP4365155A1

    公开(公告)日:2024-05-08

    申请号:EP22383067.0

    申请日:2022-11-07

    IPC分类号: C05C9/00 C05G5/30

    CPC分类号: C05C9/005 C05G5/36 C05G5/38

    摘要: The present invention relates to a fertilizing composition comprising:
    - urea granules comprising urea in an amount from 95-100 % w/w of urea wherein the urea granules are in the composition in a range from 90-98% w/w;
    - a layer which comprises sulfur having a particle size from 5 to 80 µm measured by laser diffraction and at least a binder;
    wherein the urea granules are at least partially coated by the sulfur layer; and wherein the layer is in an amount in the composition from 2-10% w/w.
    In addition, the present invention relates to a method thereof and system to manufacture said fertilizer composition in a safe and effective way.

    IMPROVED UREA-BASED BLEND COMPOSITION AND METHOD FOR THE MANUFACTURE THEREOF

    公开(公告)号:EP3374332A1

    公开(公告)日:2018-09-19

    申请号:EP16801157.5

    申请日:2016-11-10

    IPC分类号: C05C9/00 C05G3/08 A23K10/00

    CPC分类号: C05C9/005 C05G3/08 C07F9/222

    摘要: The invention relates to a solid, particulate, urea-based blend composition comprising a urea-based compound in particulate form, one or more components in particulate form, selected from the group of nitrates, phosphates, sulphates and chlorides, and a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT), wherein the urea-based blend composition is further characterized in that it comprises one or more reactive alkaline or alkaline-forming inorganic or organic compounds. The composition according to the invention has been stabilized against the degradation of a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT). The invention further relates to a method for the manufacture of the claimed solid, particulate, urea-based blend composition.

    METHOD FOR INCORPORATING MICRONUTRIENTS IN THE OUTER SHELL OF UREA-BASED PARTICLES
    8.
    发明授权
    METHOD FOR INCORPORATING MICRONUTRIENTS IN THE OUTER SHELL OF UREA-BASED PARTICLES 有权
    微结构在基于尿素的颗粒外壳中的方法

    公开(公告)号:EP3114097B1

    公开(公告)日:2018-05-02

    申请号:EP15707387.5

    申请日:2015-03-03

    发明人: LEDOUX, Francois

    IPC分类号: C05D9/02 C05G3/00 C05C9/00

    CPC分类号: C05C9/005 C05D9/02 C05G3/0041

    摘要: The invention concerns a method for incorporating micronutrients in an outer shell of urea-based particles, characterized in that it comprises the steps of a) applying a liquid concentrated mineral acid with a water content of at most 25 weight % to urea-based particles having a water content of at most 2 weight %, in order to at least form a double salt layer at the outer surface of the urea-based particles such that an acidified particle grasping layer is obtained, and subsequently b) applying a solid mineral base in powder form to the urea-based particles of step a) in order to react with the grasping layer of the urea-based particles; wherein the mineral acid or the solid mineral base are the source of any one of the micronutrients and wherein the liquid concentrated mineral acid and the solid mineral base in powder form are applied in a non-equimolar ratio between 0.1 and 1 mol/mol mineral acid/mineral base. The invention furthermore concerns a particulate urea-based fertilizer, comprising urea-based particles with a water content of at most 2 weight %, comprising micronutrients in an outer shell, the urea-based particles being obtained by a method according to the invention.

    Granular Urea Fertilizer with Nitrogen Stabilizer Additives
    10.
    发明公开
    Granular Urea Fertilizer with Nitrogen Stabilizer Additives 审中-公开
    含氮稳定剂添加剂的颗粒尿素肥料

    公开(公告)号:EP3262014A1

    公开(公告)日:2018-01-03

    申请号:EP16706745.3

    申请日:2016-02-18

    IPC分类号: C05G3/08 C05C9/00

    摘要: This invention relates to a urea granule with a nitrogen stabilizer and carrier system substantially homogenously dispersed throughout the granule thickness. Several methods are disclosed to make the urea granule, including prilling, fluidized bed, and drum granulation. The carrier system can comprise any solvent system that is both: (1) stable at urea melt temperatures of ˜120° C.; (2) able to solvate the nitrogen stabilizer system; and (3) miscible in molten urea. Such carrier systems can be blends of NMP and a glycol (e.g. propylene glycol). The nitrogen stabilizer can include a urease inhibitor, such as NBPT, where the NBPT purity can be between 90 and 99%. The nitrogen stabilizer can also include a nitrification inhibitor, such as DCD.