How to calculate the conversion rate of vinyl chloride polymerization
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Question: How is the conversion rate of vinyl chloride polymerization calculated? Last edited by edc1233 on 2008-6-23 11:27.]
There is no such thing as a conversion rate for polyvinyl chloride; what is referred to is the yield of polyvinyl chloride, which generally denotes the ratio of the amount of vinyl chloride used to the amount of vinyl chloride that is converted into polyvinyl chloride.
:):time: You are asking about the conversion rate of synthetic vinyl chloride, right? Synthesis conversion rate = 【[Acetylene purity – (1 + excess hydrogen chloride) × acetylene content in crude vinyl chloride] / Acetylene purity】× 100%
Is it the conversion rate of vinyl chloride polymerized into polyvinyl chloride?
It seems the wording is incorrect. It should be the conversion rate of VCM – the mass of PVC produced in one batch divided by the total mass of VCM used.
That’s right. May I ask how to calculate it? I mean, is it more accurate to calculate using the heat of reaction, or to use the amount of dry PVC produced as a basis for calculation?
It is generally calculated by a computer; it seems to be quite complicated, as it involves determining the heat released from converting the total amount of circulating water and VCM into PVC. However, some operating systems do not have this functionality – I know that Emerson does.
Calculate using reaction heat, with a thermal model, based on the reaction rate
Calculated based on the heat absorbed by the circulating water
It is calculated based on the heat absorbed by the circulating water, as a certain amount of heat is released when a certain quantity of monomer is converted into resin
This post was last edited by clq20040107 on 2010-6-18 08:24; the conversion rate is 78%–82% when the pressure drop is 0.05 MPa