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Three eccentric hard seal butterfly valve in the petrochemical industry played a role?

2022-03-09

Three eccentric hard seal butterfly valve in the petrochemical industry has played a very important role. Three eccentric hard seal butterfly valve can work in the event of a failure, accurately cut off the working condition, which greatly prevents the occurrence of danger. Secondly, the three eccentric hard seal butterfly valve operation is also very simple, and it also has a strong stability.

Three eccentric hard seal butterfly valve using the principle of three-dimensional eccentric design, the sealing surface of the space trajectory to achieve idealization, no friction between the sealing surface, no intervention, coupled with the proper selection of sealing materials, so that the butterfly valve sealing, corrosion resistance, high temperature resistance and wear resistance have been a solid guarantee. Its main features are as follows:

1. The opening torque is small, flexible and convenient, labor-saving and energy-saving.

2. The three-dimensional core structure makes the butterfly plate more and more tight, and its sealing performance is reliable and no leakage is achieved.

3. High pressure resistance, corrosion resistance, wear resistance, long service life, etc.

Compared with the gate valve, the butterfly valve has the characteristics of short opening and closing time, small operating torque, small installation space and light weight. Take the DN1000mm as an example, the butterfly valve is about 2t and the gate valve is about 35t and the butterfly valve is easy to combine with various driving devices, and has good durability and reliability. Because the three eccentric hard seal butterfly valve and globe valve, ball valve, gate valve compared with significant advantages, so in many occasions in the petrochemical industry, three eccentric hard seal butterfly valve has been successfully applied.

Eccentric butterfly valve set regulation and cut off (to achieve zero leakage) in one, in the polyethylene plant has a successful typical application. The reactor cooling water temperature regulation circuit of the polyethylene plant is an important part of the plant. Whether the temperature regulation circuit can run smoothly directly determines whether the whole polyethylene plant can run safely and smoothly. The temperature regulating water pipeline is of large diameter.

Under normal working conditions, the three eccentric hard seal butterfly valve because of its high control ratio, as a regulating valve, more stable and reliable than ordinary regulating valve, when the interlock occurs, the three eccentric hard seal butterfly valve can also play a cut off, and completely cut off (zero leakage). From the practical application point of view, not only the investment cost is saved, but also the control is particularly stable.

The coke cleaning valve at the outlet of the cracking furnace of the ethylene plant is a kind of valve with harsh use conditions in the petrochemical industry. The carbon particles in the process medium may accumulate on the sealing surface of the valve, causing the sealing surface to bite and the valve cannot be switched normally, even shortening the service life of the valve. Compared with other types of valves, three eccentric hard seal butterfly valve with its unique structural characteristics become the ideal choice.