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    • 8. 发明授权
    • Process for removing colloidal suspensions from a liquid
    • 从液体中去除胶体悬浮液的方法
    • US4140609A
    • 1979-02-20
    • US878987
    • 1978-02-17
    • Jerry Zucker
    • Jerry Zucker
    • B01D43/00B03C5/02C02F1/463C02F1/48D21C11/00C02C5/12
    • B03C5/02B01D43/00C02F1/463C02F1/48D21C11/0007
    • A system and method for removing colloidal suspensions or particles from a liquid, in particular tall oil soap particles from black liquor of a wood pulping process. Black liquor is moved along a flow path from an upstream to a downstream zone. First and second electrical conductors are respectively located in the upstream and downstream zones and means are provided for applying opposite electrical potentials to these conductors. For removal of anionic colloids, the first conductor is made positive and the second conductor negative. Thus, colloidal particles in the liquid having a relative potential opposite to the potential of the first conductor are attracted towards the first conductor as the liquid flows through the upstream zone, and some of the ions attached to some of these particles are stripped off by the electrical field, leaving these particles with a potential of the opposite polarity from particles not so affected. The stripped colloidal particles attract other colloidal particles the charge of which has not been changed by stripping, thereby commencing the formation of agglomerates. The particles are carried downstream by the liquid and through the field adjacent the second conductor, whereby the particles continue to agglomerate. As a result of the continuous pressure from the flow, and of air introduced into the stream and a small amount of hydrogen and oxygen resulting from electrolysis of the water present, these agglomerates or globules are "washed off" the conductors into a separation vessel wherein there results a separation in the phases. Removal of the soap or other separated materials in the vessel is accomplished by conventional means. Improved agglomeration is achieved by also applying pulsating potentials to the conductors and by insulating both conductors so that, in addition to the electric field between them, there are separate electric fields between each of them and ground.
    • 一种用于从液体中去除胶体悬浮液或颗粒的系统和方法,特别是由木材制浆工艺的黑液中的妥尔油皂颗粒。 黑液沿着从上游到下游区域的流动路径移动。 第一和第二电导体分别位于上游和下游区域中,并且提供用于向这些导体施加相反电位的装置。 为了去除阴离子胶体,第一导体为正,第二导体为负极。 因此,当液体流过上游区域时,具有与第一导体的电位相反的相对电位的液体中的胶体颗粒被吸引到第一导体,并且附着到这些颗粒中的一些的一些离子被剥离 电场,使这些颗粒具有与不受影响的颗粒相反极性的电位。 剥离的胶体颗粒吸引其它胶体颗粒,其电荷没有通过汽提改变,从而开始形成附聚物。 颗粒在液体下游并通过邻近第二导体的场,由此颗粒继续凝聚。 由于来自流动的连续压力和引入流中的空气以及由电解存在的水产生的少量氢和氧,这些附聚物或小球被“洗出”导体进入分离容器,其中 导致阶段分离。 通过常规方法实现容器中肥皂或其它分离的物质的去除。 通过向导体施加脉动电位并且通过绝缘两个导体来实现改进的聚集,使得除了它们之间的电场之外,它们中的每一个和地之间都有单独的电场。
    • 9. 发明授权
    • Electrostatic precipitator and method
    • 静电除尘器及方法
    • US3984215A
    • 1976-10-05
    • US539537
    • 1975-01-08
    • Jerry Zucker
    • Jerry Zucker
    • B03C3/68G05F1/56
    • B03C3/68Y10S323/903
    • A method of an apparatus for improving the capacity and efficiency of electrostatic precipitators by increasing the average field intensity. The precipitator is supplied with a substantially constant base level DC voltage that is less than the sparking threshold level of the precipitator, and superimposed thereon is a periodic DC voltage waveform of short duration having peak levels that substantially exceed the sparking threshold level. By controlling the characteristics of the periodic DC voltage waveform the average applied voltage is greater than the sparking voltage but the duration of the instantaneously applied voltage is not sufficient to cause sparking in the precipitator.
    • 一种通过增加平均场强来提高静电除尘器的容量和效率的装置的方法。 除尘器被提供有小于除尘器的火花阈值水平的基本恒定的基极电平DC电压,并且叠加在其上的具有基本上超过火花阈值电平的峰值电平的短持续时间的周期性DC电压波形。 通过控制周期性直流电压波形的特性,平均施加电压大于火花电压,但瞬时施加电压的持续时间不足以在除尘器中引起火花。