Home  >  Chemical Process Machinery  >  Other Chemical Equipment

Liquid liquid Extraction is a continuous extraction equipment for counter current flows. - details see: https://www.machineto.com/liquid-liquid-extraction-system-10299937

The Extraction column is packed with specially developedHiTek Structured Packings. Mother Liquor containing product is pumped through the Distributor, into the Extraction Column. The solvent for extracting the product

from the Mother Liquor is pumped through the opposite end of the column .The heavy phase is fed at the top of the column, while the light phase enters at the bottom and rises through the column counter-currently. Depending on the selection of dispersed phase, the phase interface will be at the top or bottom of the column. The selection is governed by the direction of mass transfer, the wetting of the packing, and other operational factors.

Due to the geometry the packing divides the dispersed phase into droplets, promotes high cross mixing and suppresses axial back mixing. This column has two feeds and two outlets and run continuously in the counter current mode with the densities difference as driving force.

The structure of the packing assures stable hydrodynamic conditions and reliable scale-up from pilot tests to industrial operation. Extremely high capacities are possible because of low flow resistance. Extraction problems involving narrow density differences and interfacial tensions can also be handled.

The column operates with no moving parts, and therefore requires no agitators with motor drives. This is especially useful for applications involving high pressure and temperature, because sealing problems are eliminated.

A pilot test is recommended for designing larger extraction columns. For this Pilot test facility is available at our end with a capacity of handling 50 Litre/hr onwards.

HITEK EXTRACTION SYSTEMS

We specialise in liquid extraction, also called solvent extraction. Over the years we have successfully separated a number of substances which are chemically different or which undergo thermal decomposition at higher temperatures. We have also designed extraction systems to separate substances whose vapor pressures are nearly the same. It requires a lot of understanding and experience apart from empirical studies of substances and separation dynamics, to choose the optimal process- distillation or extraction or a combination of both. At Recherché Hi-Tek, a combine of experts advise on these matters and design systems that should bring about optimal separation of substances.

THE DECISIVE EDGE

• Proven and time tested technology for problems involving marginal differences in specific gravities
• Guaranteed recovery of product from mother liquor, without using any moving components inside the column
• Enables shifting from batch type to continuous type
• Designed for low-flow resistance
• Very durable
• Low maintenance

DESCRIPTION

Various components comprising the system are: -

Extraction column

Separator

Distributors

The Extraction column is packed with specially developed Hitek Structured Packings. Mother Liquor containing product is pumped through the Distributor, into the Extraction Column. The solvent for extracting the product from the Mother Liquor is pumped through the opposite end of the column. The light density material is pumped from the bottom of the column and the heavy density material is pumped from the top of the column.

Two phases are formed : a) Continuous Phase

b) Dispersed Phase

Light density material travels from the bottom of the column to the top of the column where it gets separated at the top Separator forming an interface and overflows out from the top nozzle. The heavy density liquid enters from the top of the column through the Distributor and travels toward the bottom separator.

Due to the geometry of the Structured Packings a highly efficient mass transfer is achieved. This column has two feeds and two outlets and run continuously in the counter current mode with the densities difference as driving force.

Advantages of Counter-Current system is rich mother liquor comes into contact with product saturated solvent, hence making solvent fully saturated. As well as lean mother liquor comes into contact with fresh solvent to extract maximum possible product from outgoing stream. This makes the system highly efficient. Another advantage of this system is that there are no moving parts and operation is continuous. Hence no maintenance or supervision is required.