Regarding fiberglass resin
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This post was last edited by sunjl1981 on 2013-1-6 at 23:41. In the chlor-alkali industry, what materials are used for pipes ranging from electrolysis units to chlorine-hydrogen pipelines? If a fiberglass lining is used, is 470# resin or furan resin the better choice? &
If the economic conditions permit, titanium tubes can be used for the anode, offering a long service life. UPVC tubes can also be utilized; reinforcing them with fiberglass on the outside can improve their temperature resistance. For the cathode, carbon steel tubes are sufficient, as hydrogen does not react with iron
When economic conditions permit, titanium tubes are used for the anode (chlorine) section, as they have a long service life; typically, titanium tubes are used in the front part, while glass fiber reinforced plastic or PVC+FRP pipes are used in the rear part； The cathode (hydrogen) uses ordinary carbon steel pipes
It is planned to use Dow 470# resin with a thickness of 3.5 mm. Use 3301 for the reinforcement layer; the specific thickness depends on the pipe diameter and load capacity.
Titanium tubes work well for the chlorine main pipes used in chlorine treatment, but the cost is too high. Our company uses UPVC pipes that are reinforced with fiberglass. The cathode is made of carbon steel pipes.
Using Dow 411 for the lining is sufficient; Dow 470 is more expensive. It’s better to ensure that the wall thickness is 4 mm, and in some cases it even needs to be 10 mm or more. The specific requirement depends on factors such as temperature, pressure, and the concentration of the medium. For the reinforcing resin, P65-901 is a good choice.