Chloroethylene ratio for feeding into the polymerization reactor
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The vinyl chloride fed into the polymerization reactor is basically a mixture of partially recycled vinyl chloride and fresh vinyl chloride; how do you determine the ratio of these two types of vinyl chloride?
The ratio of recycled vinyl chloride to fresh vinyl chloride ranges from 1:5 to 1:6, depending mainly on the conversion rate of the polymerization reaction; it is necessary to ensure material balance in the system； The ratio per batch should be as constant as possible. This post was last edited by edc1233 on 2007-12-10 11:35.]
Our company also maintains the ratio of recycled vinyl chloride to fresh vinyl chloride between 1:5 and 1:6.
The addition amount is automatically calculated based on the amount of recycled monomer.
Our company automatically calculates the amount to be added based on the quantity of recycled monomers.
Our company is on the 2nd and 3rd floors, and we also keep the ratio of recycled vinyl chloride to fresh vinyl chloride between 1:5 and 1:6
Our VCM is fresh: the recycling ratio is around 9:1
The ratio of recycled vinyl chloride to fresh vinyl chloride mainly depends on the conversion rate of the polymerization reaction and the materials in the equilibrium system. For example, if the polymerization conversion rate is 85%, then 15% of the monomer needs to be added back in order to balance the materials. However, special cases can be added in larger numbers as well, but not too many. Since the recycled monomer generally contains a polymerization inhibitor, an excessive amount can affect the polymerization rate. Meanwhile, the mass of the recovered monomer is slightly lower than that of the fresh monomer, and an excessive amount can affect the quality of the resin.
What was said upstairs is better; the recovered monomer can be subjected to further distillation
The ratio of fresh monomer to recycled monomer mainly depends on the amount of monomer in the recycled monomer tank; we generally maintain it at 1:3 to 1:4. But this ratio is not absolute either. Since the recovered monomer contains additives such as initiators and terminators, this will inevitably lead to an imbalance in the proportion of these additives inside the polymerization reactor. Generally, the appropriate ratio should be determined based on the quality of the fresh monomer and the recycled monomer.
It is generally maintained at a ratio of 8-9:1, so as to ensure that it does not affect the polymerization reaction or the quality of the product.
We generally maintain a ratio of recycled monomer to fresh monomer of 1:3 to 1:4, depending mainly on the amount of monomer in the recycled monomer storage tank. Then, the appropriate ratio is determined based on the masses of the fresh monomer and the recycled monomer.