Solid-Liquid Extraction CE 630

Solid-Liquid Extraction

Type: CE 630
Name: Solid-Liquid Extraction
CE 630 - A product from the GUNT 2E range
Technical Description

  The CE 630 allows a soluble component of a solid mixture to be extracted with a revolving extractor.

  In continuous 3-stage mode, pure solvent (distilled water) is delivered from a tank to the sprinkler of the first extraction stage where it is distributed over the solid mixture (extraction material). The solvent seeps through the extraction material, absorbs its soluble components (potassium hydrogen carbonate) and passes into the collecting segments. From there, the enriched solvent is delivered to the sprinkler of the next stage. After passing through the last stage, the extract (the solvent charged with the extracted component) is collected in the extract tank. The extraction material is continuously fed into the cells of the rotating extractor by a spiral conveyor. The extraction material and the solvent move in counterflow. The extraction residue drops into a tank after one revolution of the extractor.

  Valves can be used to switch to 1- or 2-stage continuous mode. Discontinuous mode is possible with the extractor stopped.

  Three pumps are available for delivering the solvent. Their speed can be individually adjusted for each stage. The temperature of the solvent can likewise be adjusted for each stage with PID controllers. Each stage is equipped with conductivity sensors to monitor the separation process. All measured values can be viewed by software.

  The solid mixture (extraction material) is produced prior to the extraction experiment. The carrier material (granular aluminium oxide) is fed into a salt solution (potassium hydrogen carbonate dissolved in water). The carrier material soaked with the salt solution is then dried.

  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.


Learning Objectives / Experiments

- fundamentals of solid-liquid extraction
- demonstration of solid-liquid extraction as a

  continuous and discontinuous process
- investigation of 1-, 2- and 3-stage processes
- influence of solvent flow rate and temperature on

  the extraction process
- influence of extraction material feed rate and

  extractor revolving speed on the extraction process


* Discontinuous and continuous solid-liquid

* 1-, 2- or 3-stage modes possible1
* Regenerable extraction material1
* GUNT software with control functions and data


Alternative products
CE 620 -- Liquid-Liquid Extraction

[1] revolving extractor for continuous and discontinuous solid-liquid extraction
[2] switching to 1-, 2- or 3-stage modes possible by valves
[3] extractor revolving speed adjustable by potentiometer
[4] spiral conveyor with variable speed to adjust the extraction material feed rate
[5] flow rate of solvent adjustable for each stage via speed of pumps
[6] temperature of solvent adjustable for each stage by PID controller
[7] tanks for extraction material, extraction residue, solvent and extract
[8] GUNT software for data acquisition via USB under Windows Vista or Windows 7


Technical Data

- 9 cells
- rotor diameter: approx. 200mm
- speed: approx. 0...9h-1
- motor power consumption: approx. 0,9W
Spiral conveyor
- max. feed rate: approx. 20L/h
- motor power consumption: approx. 4W
4 peristaltic pumps
- max. flow rate: approx. 25L/h at 300min-1 and hose

3 heaters
- power consumption: approx. 330W
- extraction material: approx. 5L
- extraction residue, solvent, extract: each approx. 20L
Measuring ranges
- flow rate: 1x 0,025...0,5L/min
- conductivity: 4x 0...20mS/cm
- temperature: 4x 0...50°C


Dimensions and Weight LxWxH: 1360x780x1900mm
Weight: approx. 150kg Required for Operation

230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase

Scope of Delivery

1 trainer

1 set of tools

1 hose

1 GUNT software CD + USB cable
1 packing unit of aluminium oxide
1 packing unit of potassium hydrogen carbonate
1 set of instructional material

Order Details 083.63000  CE 630  Solid-Liquid Extraction