式离心机

49000 .00- - - - - -93000 .00

倒螺离心机工艺特点

蒸馏离心机的分离过程依赖于一些过程特性,如离心力或重力,沉降速率和分离因子,输送机和碗之间的差速,以及液体排出的清晰度。

蒸馏离心机需要一个离心力用于从液体中分离固体。这一特性取决于离心机的半径及其角转速。蒸馏离心机施加的力相当于几千G,这减少了颗粒的沉淀时间。它也有利于保持一个大重力,这将导致更好的分离。

沉淀发生的速度是倒螺离心机的一个重要特性分离过程.的沉积速率受颗粒的大小、颗粒的形状、它们的密度差以及颗粒与液体之间的粘度的影响。絮凝剂的使用可以改善这一过程的特性。沉降速度也取决于分离因子离心机,这与离心力有关。

外碗和涡旋输送机以不同的高速旋转。这两者之间的速度差异是整个蒸馏离心机筒沉淀的原因。高的差动速度可以缩短滤饼沉降的停留时间,因此必须将滤饼厚度控制在最小的范围内,以避免影响出料质量。保持蛋糕的厚度到最小也有助于改善蛋糕脱水的过程。因此,有必要获得一个最佳的差速来平衡饼的厚度和质量。

上述特性都影响了液体输出的清晰度,这取决于体积贯穿率,较高的流速会导致液体透明度较差。影响液体输出清晰度的另一个特性是差速。低的差速导致更好的清晰度,因此,有助于分离过程。重力也在液体排放的清晰度中起作用。更高的重力会增加固体颗粒与液体的分离,从而产生更好的清晰度。

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描述

它是如何工作的

进料产品通过进料口泵入蒸馏离心机。饲料进入一个水平碗,旋转。该碗由圆柱形部分和圆锥形部分组成。分离发生在碗的圆柱形部分。快速旋转产生离心力在这些力的作用下,密度较高的固体颗粒被收集并压实在碗壁上。一个卷轴(也叫螺旋输送机或螺旋输送机)在碗内以稍微不同的速度旋转。这种速度差称为差速。通过这种方式,滚动将沉淀的颗粒沿碗的圆柱形部分运输到碗的锥形部分的末端。在碗的锥形部分最小的末端,脱水的固体通过排出口离开碗。澄清后的液体通过配盘(内部向心泵)离开。

用蒸馏器三相分离

使用三相蒸馏离心机,可以在一个过程步骤中分离出3个相。例如,由于密度不同而不能混合的两种液体(如油和水)从固相中分离出来。重液体(水)聚集在油和固体层之间的中间。这样,两种相互分离的液体就可以从蒸馏器中提取出来。固体通过涡旋输送到放电开口,这也发生在两相分离中。

三相分离的典型应用是生产食用油,如橄榄油、油泥处理、生产生物柴油等。

分离参数及影响因素

进料、吞吐量和停留时间

通过进料,可将待处理的分离介质输入到辊子进料室的中心,在那里进行加速。吞吐量会对停留时间

离心机加速度

分离介质在蒸馏碗中达到最大速度,使固体沉淀在碗的内径上。碗的一个特点是它的圆柱形/圆锥形。

微分速度

在蒸馏碗和卷轴之间有一个不同的速度,这是由工业蒸馏离心机上的齿轮单元产生的。差速决定了出料中的固含量。

填充量/堰盘或溢流堰

澄清后的液体在蒸馏离心机中流向碗的圆柱形末端,从那里通过碗盖上的开口流出。这些开口包含精确可调的堰盘/堰板,通过它们可以设置水池的深度。堰盘决定了碗的填充量。

竞争过程的优势和局限性

一般来说,倒螺离心机利大于弊;然而,与其他流程相比,它有一些限制。

离心机的优势:
  • 蒸馏离心机外观干净,几乎没有异味问题。
  • 该设备不仅易于安装和快速启动和关闭,而且与其他竞争流程相比,只需要一个小的操作区域。
  • 锥形离心机是万能的,因为不同长度的圆柱形碗节和锥角可以选择不同的应用。此外,该系统可以预编程各种设计曲线来预测污泥类型,而一些竞争的流程,如带式压滤机,不能改变带式类型来操作不同的污泥类型。它的多功能性使机器具有各种功能,如操作增稠或脱水
  • 这台机器可以用更高的手柄操作吞吐量容量比较小的机器大。这也减少了所需的单元数量。
  • 该装置主要变量少,反馈信息可靠,优化和操作简单。
  • 与其他工艺相比,倒螺离心机降低了人工成本,因为它需要低的持续维护和操作人员的注意。
  • 相比一些竞争过程,如带式过滤机在工艺上,倒螺离心机具有更大的工艺灵活性和更高的性能水平。
离心机限制:
  • 式离心机不能分离密度差异很小的生物固体,如细胞和病毒。能够分离这些难以分离的固体的竞争过程是管状碗离心机。
  • 这台机器可能噪音很大,会引起震动。
  • 由于该设备的高能量消耗除此之外
  • 倒螺离心机设备资金成本高。为了减少卷轴的磨损,需要硬表面处理和耐磨保护材料,从而减少卷轴的维护磨损。

额外的信息

重量 2400磅
97 × 34 × 54英寸
能力

1 - 5铜。5 - 20立方英尺。10 ~ 30立方英尺。英国《金融时报》,出具铜。50 - 80立方英尺。英国《金融时报》。

电压

220伏,480伏

手册

r3 PEUSALW300手册

规范

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