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2 157 355

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IPC

(21) (22)

Application

99126909/12, 1999-12-28

(24)

Start date

1999-12-28

(22)

Actual filing date

1999-12-28

(45)

Published

2000-10-10

(72)

Inventor

Al'Mukhametov I.A.Galiev F.A.Kuz'Menko V.N.Jarmukhametov Kh.I.Chernenko Ju.D.Sushchev V.S.Navalikhin P.G.Saenko N.D.Zhukova A.A.Davydenko V.V.Brodskij A.A.Markova M.L.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Institut Po Udobrenijam I Insektofungitsidam Im. Prof. Ja.V. Samojlova"

DIAMMONIUM PHOSPHATE PRODUCTION PROCESS Russian patent published in 2000 - IPC

Abstract RU 2157355 C1

FIELD: mineral fertilizers. SUBSTANCE: process includes mixing phosphoric acid with sulfuric acid, stepped neutralization of ammonia with acid mixture until ammonia-to-phosphoric acid molar ratio first 1.4 and then 1.75 is attained, granulation, drying, and subsequent two-step cleaning of emission gases. For the process, organics-containing spent sulfuric acid from petrochemical production enterprises is used. EFFECT: reduced ammonia emission, improved granulation stage control, and imparted antiseptic properties to fertilizer. 2 cl, 3 ex

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RU 2 157 355 C1

Authors

Al'Mukhametov I.A.

Galiev F.A.

Kuz'Menko V.N.

Jarmukhametov Kh.I.

Chernenko Ju.D.

Sushchev V.S.

Navalikhin P.G.

Saenko N.D.

Zhukova A.A.

Davydenko V.V.

Brodskij A.A.

Markova M.L.

Dates

2000-10-10—Published

1999-12-28—Filed