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2 300 740

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(51)

IPC

G01F1/74(2006-01-01)

G01F1/86(2006-01-01)

C01B25/46(2006-01-01)

(21) (22)

Application

2005130743/28, 2005-10-05

(24)

Start date

2005-10-05

(22)

Actual filing date

2005-10-05

(45)

Published

2007-06-10

(72)

Inventor

Lembrikov Vladimir MikhajlovichKonjakhina Ljudmila ViktorovnaVolkova Valentina VjacheslavovnaZhavoronkova Galina PavlovnaErshova Serafima MikhajlovnaTsareva Ljudmila Ivanovna

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Institut Po Udobrenijam I Fosfornoj Kislote

METHOD OF CONTROL OF EXTRACTING AGENT FLOW RATE IN CIRCULATING APPARATUS Russian patent published in 2007 - IPC G01F1/74 G01F1/86 C01B25/46

Abstract RU 2300740 C1

FIELD: chemical engineering.

SUBSTANCE: method comprises sampling the extract supplied to the tower for re-extraction by water and extracting agent discharged from the re-extraction tower, cooling the samples down to 20°C, measuring density of extract and extracting agent and amount of purified acid discharged from the re-extraction tower, and calculating the extracting agent flow rate from the formula presented.

EFFECT: enhanced precision of measurements and simplified method of control.

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RU 2 300 740 C1

Authors

Lembrikov Vladimir Mikhajlovich

Konjakhina Ljudmila Viktorovna

Volkova Valentina Vjacheslavovna

Zhavoronkova Galina Pavlovna

Ershova Serafima Mikhajlovna

Tsareva Ljudmila Ivanovna

Dates

2007-06-10—Published

2005-10-05—Filed