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2 129 116

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C1

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IPC

(21) (22)

Application

95109540/25, 1995-06-07

(22)

Actual filing date

1995-06-07

(45)

Published

1999-04-20

(72)

Inventor

Chepchurov Ja.I.Stal'Nov P.I.

(73)

Holder

Individual'Noe Chastnoe Predprijatie Po Razrabotke Nestandartnykh Sredstv Kontrolja I Avtomatizatsii Protsessov

METHOD OF AUTOMATIC CONTROL OF PROCESS OF PREPARING PENTAERYTHRITE Russian patent published in 1999 - IPC

Abstract RU 2129116 C1

FIELD: chemical industry. SUBSTANCE: acetaldehyde, formaldehyde, alkali and water are continuously fed into reactor with stable flow rate. Acetaldehyde flow rate in reactor is maintained automatically at desired short supply or at minimum amount of water, which amount is determined by difference between relative temperature rise in mixer containing acetaldehyde and circulating reaction mixture and relative acetaldehyde flow rate. Present invention makes it possible to maintain amount of formaldehyde close to optimum amount. EFFECT: more efficient control method. 2 dwg

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RU 2 129 116 C1

Authors

Chepchurov Ja.I.

Stal'Nov P.I.

Dates

1999-04-20—Published

1995-06-07—Filed

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