Automatic control method of butadiene polymerization
The invention relates to an automatic control method of butadiene polymerization, which comprises the steps that: the reaction temperature is divided into six stages, when the temperature in a reactor changes, the actual value of the temperature and the set valve of the temperature have difference,...
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Main Authors | , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
30.05.2012
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to an automatic control method of butadiene polymerization, which comprises the steps that: the reaction temperature is divided into six stages, when the temperature in a reactor changes, the actual value of the temperature and the set valve of the temperature have difference, and the output valve of a PID regulation action temperature regulator is taken as the set valve of a liquid ammonia regulator; the temperature of the reactor is controlled within the normal range; when the pressure exceeds the high limit valve, the set valve of the temperature regulator at this moment is stored into a register, and the set valve of the temperature regulator is endowed with lower valve again; the pressure in the reactor is reduced; when the liquid level of ammonia reaches to the high limit valve, the output valve of the ammonia regulator is manually set into a full-closed state until the liquid level of ammonia is lower than low limit valve, and temperature-liquid level cascade stage adjustment is c |
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Bibliography: | Application Number: CN2009181975 |