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    • 3. 发明授权
    • Method and device with a gas layered sieve plate for wet desulfurization
from flue gas
    • 具有气体分层筛板的方法和装置,用于从烟道气中脱硫
    • US5660616A
    • 1997-08-26
    • US434203
    • 1995-05-03
    • Byung-Sun ChoiJoo-Soo KimSo-Min ParkJin-Pyo HongSeung-Soo ParkKwon-Soon ParkDong-Wha KimChang-Mo NamYung-Hwan Kim
    • Byung-Sun ChoiJoo-Soo KimSo-Min ParkJin-Pyo HongSeung-Soo ParkKwon-Soon ParkDong-Wha KimChang-Mo NamYung-Hwan Kim
    • B01D53/34B01D53/18B01D53/50B01D53/77B01J10/00B01D47/00B01D47/02
    • B01D53/504B01J10/002B01J2219/00108
    • A method and a device for wet desulfurization of flue gas to remove a sulfur dioxide(SO.sub.2) contained in flue gas discharged from thermal power stations and boilers are disclosed. In the method the device with a gas layered sieve plate for wet desulfurization of flue gas, an absorbing liquid improves reacting conditions by effecting it own circulation without using additional power due to the structural characteristics possessed by the device and flue gas is treated very satisfactorily thanks to high gas-liquid contact efficiency. In order to minimize power consumption and the size of the device but promote desulfurization to an unusual degree, an absorber is divided into an upper froth layer and a lower liquid layer by a single-stage gas dispersing plate with a large number of gas ejection holes bored therein. The absorber comprises a liquid downcomer which enables absorbing liquid which absorbed a sulfur dioxide from the froth layer to overflow when it rises higher than a proper height and then fall by a difference in liquid head produced between the froth layer and the liquid downcomer and a liquid riser which extends downward to a proper length from the gas dispersing plate and enables the absorbing liquid to rise above the gas dispersing plate for ejection to the extent of its fall, and so the absorbing liquid effects its own circulation at a high speed without using additional power. To raise adaptability to changes in boiler load, a number of V notches are formed at regular intervals at the upper end of an overflow weir.
    • 公开了一种用于烟气脱硫的方法和装置,用于除去从火力发电站和锅炉排出的烟道气中所含的二氧化硫(SO2)。 在该方法中,具有用于烟气湿脱硫的气体分层筛板的装置,吸收液体由于装置所具有的结构特征而使其自身循环而不需要额外的功率来改善反应条件,并且非常令人满意地处理烟道气 达到高气液接触效率。 为了最小化功耗和装置的尺寸,但是将脱硫促进到不寻常的程度,通过具有大量气体喷射孔的单级气体分散板将吸收器分为上泡沫层和下液体层 无聊。 吸收器包括液体降液管,其能够吸收从泡沫层吸收二氧化硫的液体当其上升高于适当的高度时溢出,然后由在泡沫层和液体降液管之间产生的液体头的差而下降,并且液体 提升管从气体分散板向下延伸到适当的长度,并使吸收液体能够上升到气体分散板上方,用于喷射到其下落的程度,因此吸收液体以高速度实现其自身的循环,而不需要额外的 功率。 为了提高锅炉负荷变化的适应性,在溢流堰的上端以规则的间隔形成多个V槽口。