On the conversion rate of rubber polymerization reactions
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Dear teachers: I would like to ask what causes the high catalyst consumption and particularly low conversion rate of isoprene rubber during the reaction process? How to solve it?
1. High impurity levels in the raw materials, isoprene, and solvent (such as water, cyclopentadiene, etc.), or issues with the catalyst
Online monitoring system for polymerization rate (conversion rate). The purpose of this monitoring system is to address the issues associated with the online, continuous measurement of the polymerization rate during the polymerization process. By establishing a mathematical relationship between the polymerization rate and the signals measured, it is possible to obtain information on the polymerization rate using the signals collected by conventional instruments from the polymerization reactor. Based on the specific gravity of the monomers before the polymerization reaction and that of the polymer produced after it, as well as the differences in polymer specific gravity, the degree of polymerization can be calculated by measuring the specific gravity of the material in the polymerization reactor and taking into account the feed ratios. Among them, the specific gravity of the material is determined by measuring the differential pressure signal between two measurement points on the polymerization reactor; to counteract the effects of changes in the temperature of the material inside the reactor and the ambient temperature, appropriate temperature compensation is required. The typical error value is ±1.0%. The primary instruments used in the system are: 1 dual-flange differential pressure transmitter, 2 medium temperature sensor, 3 ambient temperature sensor