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Sieve Tray with High Capacity and Lower Cost

  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Beijing

  • Validity to:

    Long-term effective

  • Last update:

    2017-11-10 19:25

  • Browse the number:

    225

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Company Profile

Saiptech Co., Ltd.

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Contact：Mr. Zhang(Mr.)  

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Telephone：

Phone：

Area：Beijing

Address：Beijing

Website： http://saiptech.byshaiwang.com/

Product details

Saiptech's Sieve Trays

Sieve trays became a dominate tower internal for mass transfer columns in the 1950's owing to their simple shape and ease of manufacture. This made sieve trays a popular device for extensive research and as a result, a considerable amount of experience has been gained for tray design and its application. Sieve trays are flat perforated plates in which vapour is forced through the holes into the cross flowing liquid. Vapour flow prevents liquid from leaking (weeping) through the holes. At low vapour velocities, liquid weeping through the holes occurs, which bypasses a portion of the tray active area and reduces efficiency, giving sieve trays relatively low turndown (approx. 2-2.5:1).
Saiptech has the capability to design and manufacture virtually any type of sieve tray. Tray hole sizes down to 3.2 mm and up to 16 mm in diameter are offered
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Comparison of Common Conventional Tray
TRAY TYPE  BUBBLE CAP  DUALFLOW  SIEVE  VALVE 
Capacity  Moderate  Very High  High  High to very high 
Pressure Drop High  Low to Moderate Low to Moderate Moderate.Older designs were somewhat higher.Recent designs same as sieve trays. 
Efficiency  Moderate (0.6 - 0.8) Lower compared to others (0.5 - 0.7) High (0.7 - 0.9) High (0.7 - 0.9)
Turndown  Very high Can handle very Can handle very low liquid rates  Low. Not suitable for suitable for varying loads  Approx. 2:1. Unsuitable for Unsuitable for varying loads operation  Approx. 3-5:1 Higher turndown Higher turndown designs can be provided on request. 
Maintenance  Relatively high  Low  Low  Low to moderate 
Fouling Tendency  High. Tends to accummulate solid particles Extremely low. Best choice for Severe fouling Low  Low to moderate 
Main Application  Very low flow conditions where leakage needs to be minimized Capacity revamps where efficiensy and turndown not critical high fouling and corrosive servies Most columns where trundown not important Most Columns services where turndown important
Cost  High -approx 2~3 times that for sieve trays Low  Low  Marginally higher than sieve trays