BLOCKING DEVICE AND BLOCKING METHOD Russian patent published in 2016 - IPC B01J8/00 B01J19/00 C08F2/00 C08F2/06 C08F2/34 C08F10/00 C08F10/06 F26B25/00 

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining polymer with application of blocking device. Blocking device represents instrumental system, which is constructed for action in response to conditions, pointing to potentially dangerous situation or sequence, and is intended for application in method for obtaining polymer, which includes the following stages: polymerisation f monomer and optionally comonomer in reactor with obtaining polymer, optionally in presence of inert hydrocarbon, and discharge of obtained polymer from reactor, with blocking being based on temperature in reactor and including the following stages: measurement of temperature in reactor and comparison of measured temperature with threshold temperature value, which is lower than usual temperature interval in reactor, expected for obtaining respective polymer, discharge is allowed, if measured temperature is higher than threshold value, and is prevented, if measured temperature is lower than threshold value. Blocking can be also additionally based on measurement of pressure in reactor and comparison of measured pressure with threshold pressure value, which is lower than usual working process pressure, and discharge is allowed, if measured pressure is lower than threshold value or measured pressure is higher than threshold value and simultaneously measured temperature is higher than threshold value, and discharge is prevented, if measure pressure is higher than threshold value, but measured temperature is lower than threshold value.

EFFECT: invention provides effective prevention or mitigating hazardous situations.

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