PVC production process
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How is PVC mainly produced? What processes are bottom valves and cleaning valves primarily used in? I hope someone experienced can give me some advice, and I also hope there are more posts about PVC!
Produced by the calcium carbide method and the petroleum method; the calcium carbide method uses calcium carbide and NaOH. Last edited by shizhiyong001 on 2009-1-7 09:37.]
This post was last edited by clq20040107 on 2010-12-7 at 12:48. “Polyvinyl Chloride Technology” is currently the most comprehensive technical book available; downloads are available in the relevant section.
PVC is produced through the polymerization of VCM; the bottom valve of the tank is used for discharging material, while the cleaning valve is used for cleaning and lining the tank walls.
You can take a look at \"PVC Production and Operation\"; it has quite detailed content. It’s worth learning.
I have “Polyvinyl Chloride Production and Operation,” but the file is too large; the forum does not allow its upload. I hope the moderator can help resolve this issue
Our factory produces acetylene using the calcium carbide method, and then generates VCM; PVC is produced through suspension polymerization
PVC is produced through the polymerization of VCM, with the suspension method and the bulk method being the two common polymerization techniques. The suspension method involves the use of many additives; after polymerization, the product is in a slurry form and requires drying. The bulk method is a French technique; no additives are used (although it seems that a little is added, I can’t remember), and the product is in a directly dried state after coming out of the furnace. The ontology method is rarely used in China at present; as far as I know, Tianyuan in Yibin, Sichuan uses this method, but the production seems not to be very stable.
Usually, the suspension method is used: after the slurry is prepared, it goes through air-lift drying and then packaging!
Our company plans to install a PVC production line with an annual capacity of 250,000 tons, and we intend to use the dry acetylene process. However, too few companies in China use the dry acetylene process, and this technology is not yet fully developed.
It seems that the book titled \"PVC Production and Operation\" is available for download at http://bbs.hcbbs.com/viewthread.php?tid=153753. It’s worth noting that the book is divided into four sections, but each section actually constitutes a complete book on its own (including the table of contents). You only need to spend a little money to get it; there’s no need to waste money. This post was last edited by slion on 2008-4-16 17:34]
There’s no need to worry; the dry-process calcium carbide acetylene technology is already in use in at least three industrial facilities, with good results. The biggest advantage is that it solves the problem associated with the difficult handling of wet-process gypsum.
Acetylene generation method and polymerization suspension method
PVC processing technology – is there any literature on the technology of processed products?
For information on the PVC production process, you can check out the flowchart post I shared: http://bbs.hcbbs.com/thread-342688-1-1.html. Bottom valves and cleaning valves are used in the polymerization stage
PVC Handbook – the most comprehensive technical book available at the moment :) :victory: