DIPEPTIDE-CONTAINING GRANULAR MATERIAL

• US 20190322600A1
• Filed: 06/27/2017
• Published: 10/24/2019
• Est. Priority Date: 06/27/2016
• Status: Active Grant

• Current Assignee: Evonik Operations GmbH (Rag-Stiftung)
• Original Assignee: Evonik Degussa GmbH (Rag-Stiftung)
• Inventors: KOERFER, Martin, HASSELBACH, Hans Joachim, NIGGEMANN, Gerit, HANSMEIER, Antje, ALT, Hans Christian, EGLY, Dominik, SCHULTE, Peter
• Granted Patent: US 11,180,426 B2
• Time in Patent Office: Days
• CPC Class Codes: B01J 2/00 Processes or devices for granulating materials , e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
• CPC Class Codes: B01J 2/02 by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
• CPC Class Codes: C05C 11/00 Other nitrogenous fertilisers
• CPC Class Codes: C05C 3/00 Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
• CPC Class Codes: C05D 1/00 Fertilisers containing potassium C05D7/00 takes precedence
• CPC Class Codes: C05D 1/02 Manufacture from potassium chloride or sulfate or double or mixed salts thereof
• CPC Class Codes: C05F 11/10 Fertilisers containing plant vitamins or hormones
• CPC Class Codes: C05G 5/12 Granules or flakes
• CPC Class Codes: C05G 5/30 Layered or coated, e.g. dust-preventing coatings

Abstract

The present invention relates to a process for producing a particulate composition containing methionine, methionylmethionine, potassium in the form of potassium salt and ammonium sulphate, and use thereof.

Claims

1. :

A process for producing a particulate composition containing methionine, methionylmethionine, potassium salt and ammonium sulfate, the process comprising;

generating

particles from an aqueous mixture by a forming process with upstream and/or simultaneous evaporation of the water; and

drying the particles to obtain the particulate composition,

wherein the aqueous mixture comprises;

0.5 to 4% by weight of methionine;

0.5 to 5% by weight of methionylmethionine;

1 to 9% by weight of potassium in the form of a potassium salt; and

7 to 35% by weight of ammonium sulfate.

2. :

The process according to claim 1, wherein the aqueous mixture comprises;

1 to 3% by weight of the methionine,

1 to 4% by weight of the methionylmethionine,

2 to 7% by weight of the potassium in the form of the potassium salt, and/or

10 to 30% by weight of the ammonium sulfate.

3. :

The process according to claim 1, wherein the aqueous mixture is produced by mixing an aqueous solution (i) comprising 30 to 40% by weight of the ammonium sulfate with an aqueous solution (ii) comprising;

2 to 6% by weight of the methionine;

4 to 8% by weight of the methionylmethionine; and

6 to 14% by weight of the potassium in the form of the potassium salt,

such that a ratio of the aqueous solution (ii) to the aqueous solution (i) is from 1.0/0.5 to 1.0/3.0.

4. :

The process according to claim 3, wherein;

the aqueous solution (i) comprises 30 to 40% by weight of the ammonium sulfate; and

the aqueous solution (ii) comprises;

3 to 5% by weight of the methionine,

5 to 7% by weight of the methionylmethionine, and/or

8 to 12% by weight of the potassium in the form of the potassium salt.

5. :

The process according to claim 3, further comprising;

preparing the aqueous solution (i) comprising the ammonium sulfate primarily by treating a gaseous mixture comprising hydrogen cyanide and ammonia, generated in the production of hydrogen cyanide from methane and ammonia, with sulphuric acid, and subsequent, neutralizing a resulting aqueous solution with ammonia.

6. :

The process according to claim 3, further comprising;

preparing the aqueous solution (ii) by separating a mother liquor formed in the reaction of 5-(2-methylmercaptoethyl)hydantoin with potassium carbonate, potassium hydrogen carbonate and carbon dioxide to give the methionine.

7. :

The process according to claim 1, wherein the aqueous mixture is additionally treated with sulphuric acid until a pH of 3 to 6 is reached in the aqueous mixture, measured at room temperature with a glass pH electrode filled with liquid electrolyte in the form of a 3 molar KCl solution.

8. :

The process according to claim 1, wherein the aqueous mixture is also concentrated, prior to performing the forming process, by evaporation of water to give an aqueous suspension with a solids content of up to 70% by weight.

9. :

The process according to claim 1, wherein an ammonium sulfate shell layer is applied to the particles by spraying with an aqueous solution comprising 30 to 40% by weight ammonium sulfate with simultaneous evaporation of water, such that a proportion of the ammonium sulfate shell layer formed on the particles is 5 to 30% by weight based on the total solids content of the particles.

10. :

The process according to claim 1, wherein the potassium salt is present as at least one salt of an inorganic or organic acid.

11. :

The process according to claim 10, wherein the potassium salt is at least one potassium salt formed from an acid selected from the group consisting of formic acid, acetic acid, propanoic acid, 2-hydroxypropanoic acid, 2-hydroxy-4-methylthiobutanoic acid, KHCO₃, K₂CO₃, KHSO₄ and K₂SO₄.

12. :

The process according to claim 1, wherein the forming process is carried out as a spray granulation, mix granulation, extrusion or compaction.

13. :

The process according to claim 12, wherein the forming process is carried out as a spray granulation with a two-phase nozzle, in which a gas component together with the aqueous mixture is sprayed as a liquid component via the two-phase nozzle.

14. :

The process according to claim 13, wherein air or nitrogen are used as a gas component.

15. :

The process according to claim 13, wherein the forming process occurs in a fluidized bed at a temperature of 60 to 130°

C.

16. :

A particulate composition, comprising;

1.5 to 10% by weight of methionine;

2.5 to 9% by weight of methionylmethionine;

4 to 20% by weight of potassium in the form of a potassium salt; and

27 to 80% by weight of ammonium sulfate.

17. :

The composition according to claim 16, comprising;

2 to 8% by weight of the methionine,

3 to 7% by weight of the methionylmethionine,

5 to 17% by weight of the potassium in the form of the potassium salt, and/or

30 to 76% by weight of the ammonium sulfate.

18. :

The composition according to claim 16, wherein the potassium salt is at least one potassium salt formed from an acid selected from the group consisting of formic acid, acetic acid, propanoic acid, 2-hydroxypropanoic acid, 2-hydroxy-4-methylthiobutanoic acid, KHCO₃, K₂CO₃, KHSO₄ and K₂SO₄.

19. :

The composition according to claim 16, further comprising;

a binder selected from the group consisting of a porous volcanic silicate rock, a precipitated silica, a fumed silica, and a porous carbonate rock.

20. :

The composition according to claim 16, wherein;

particles of the particulate composition have been coated with an ammonium sulfate layer; and

a proportion of the ammonium sulfate layer is 5 to 30% by weight, based on the total solids content of the particles.

21. :

A fertilizer or fertilizer additives, comprising the particulate composition of claim 16.