Advantages and disadvantages of positive and negative pressure processes in chlorine drying units (the purpose of using titanium fans for pressurization in chlorine treatment units)
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This post was last edited by sunjl1981 on 2013-1-6 20:12. What are the advantages and disadvantages of the positive and negative pressure processes in ion membrane electrolysis chlorine drying devices? What are the benefits of using positive pressure? (The purpose of using titanium fans for pressurization: Why are titanium fans used for pressurization?) ) This post was last edited by lomo1234 on 2009-2-13 10:00 ] # , , &
Positive pressure can ensure the purity of chlorine, but it is difficult to guarantee safety.
Both positive and negative pressure are acceptable; it depends on the actual situation.
Most chlorine drying units operate under positive pressure; negative pressure has an impact on the drying tower, causing it to collapse. The pressure at the head of the electrolytic cell is generally either positive or negative; the systems from German company Wood have a slight negative pressure, while those from Asahi Kasei’s Seika Machine Company have positive pressure. Even if it is negative pressure, it is only mild negative pressure, so the impact is minimal. And it also has no impact on drying itself.
Negative pressure is used primarily to prevent accidents caused by chlorine leaks, as chlorine is a toxic and harmful gas; factories have strict requirements regarding it, and even minor leaks can pose a life-threatening risk. In this way, even if the pipe leaks, only air will be drawn in, and no chlorine will leak out. However, negative pressure operation is difficult to control, so some use slight positive pressure. This post was last edited by yzhms on 2009-2-13 22:18]
What is the purpose of using titanium fans for pressurization in chlorine treatment equipment?
Seen it, hehe! The diaphragm pump should be larger. Some people say that titanium fans are used in combination with chlorine turbines. It is mainly used during the startup phase; is that correct?
Negative pressure is safe, but the bubbling effect of the drying tower must be taken into account: victory:
Drying is generally carried out using non-metallic equipment; negative pressure is not allowed. Positive pressure helps to reduce the power consumption of the turbine, thereby achieving energy savings
The chlorine systems designed by Beihua Machinery generally operate at a slight positive pressure; negative pressure is not allowed. Under negative pressure, it may cause the fiberglass-reinforced plastic pipes or drying towers to collapse, thereby affecting the purity of chlorine gas. The positive pressure should also not be too high, as this could lead to chlorine leakage and cause safety accidents. This post was last edited by xuqiongwu on 2009-2-13 21:02.]
In ion exchange membranes, positive pressure is generally used. Titanium fans are employed to increase the pressure in diaphragm systems where turbines are used for transportation; this ensures that there is a slight positive pressure of chlorine in the diaphragm main pipes, while also guaranteeing the normal and efficient operation of the turbines.
Chlorine is the next processing step in the electrolysis process; negative pressure for chlorine is not acceptable. Generally, when the pressure reaches a risky level, waste gas treatment is required (as part of a chain reaction). In design, negative pressure is used for chlorine, while positive pressure is used for hydrogen.
What is described here is the situation in a diaphragm system, where the pressure of chlorine is negative pressure.
To prevent chlorine leakage, chlorine treatment systems generally operate under slight negative pressure. Titanium fans are generally used only when the diaphragm and ion exchange membrane share the same chlorine treatment system. The reason is that ion-exchange membrane cells are less prone to leakage, and they are often operated at positive pressure; thus, there is no high demand for a strong suction force for chlorine. In contrast, diaphragm cells require a slight negative pressure control over chlorine, and titanium fans are used to ensure this condition.