The Principle Of Flash Column

Flash column is usually used for the chromatography experiment to separate the complicated compounds by pressurizing air.

The hot air enters the stirring, crushing and drying chamber from the bottom of the dryer at a suitable spraying speed from the inlet pipe, which produces strong shearing and blowing. At the bottom of the dryer, larger and wet granules are mechanically broken under the action of the agitator, and particles with lower moisture content and smaller granularity are entrained by the rotating airflow to rise and are further dried during the ascent. Because the two phases of gas and solid are rotating, the inertia of the solid phase is greater than that of the gas phase, the relative speed between the two phases of solid and gas is relatively large, and the mass and heat transfer between the two phases is enhanced, so the machine has high production intensity.

Hawach flash column will provide you different types of flash column. If you have any question about our product. Don’t hesitate to contact us.

Types of HAWACH Flash Column
HAWACH flash columns fall into the following three series: StarFlash series: silica gel column only, this series can be divided into standard and advanced sub-categories. Advanced silica has higher purity and better quality.

DepuFlash series: silicone construction and phase columns, C18 (spherical and irregular),C8, NH2, CN, Phenyl, SAX, SCX, Diol are domestic fillers, corresponding to the low-end market.

Other flash series: silica gel construction and phase column. For example, C18(spherical inlet and irregular home-made), C4, C8, NH2, CN, HLIC, and oxide which are all imported fillers, corresponding to the high-end market.

empty flash column chromatography

Advantages of HAWACH Flash Column
Impurity dissolution rate: the materials are all medical-grade PP and PE, which have strong corrosion resistance and low impurity content. There is low probability of impurity dissolution.

Diversity of options: a large number of series/types, imported/domestic adsorbents. The features of diverse specifications is convenient for price-sensitive customers and quality-sensitive customers. Customers in different fields can have multiple choice.

Particle size distribution curve of adsorbent silica gel: for the parameters of adsorbent particle size of 3um and 5um, it does not mean that the diameter of all particles is this value, but a range. The result obtained by testing this range is the particle size distribution curve.

Report of silica gel partial adsorbent purity test; stability test report for StarFlash standard silica flash column.

Function of Neutral Alumina Flash Columns
Hawach neutral alumina flash columns can be used to extract aromatic amines, highly active porous alumina, whose surface electrons can form pi-pi interactions with aromatic rings with strong polarity retention and acid properties. Compared with unbonded silica gel, neutral alumina flash columns is more stable in a high pH environment and suitable for the extraction of aromatic amines.

Installation of Neutral Alumina Flash Columns
Hawach offers some guidance in properly installation of neutral alumina flash column. The first is to wash the column clean to prevent the adsorption of the pipe wall. If the column is wet, first use the eluent saturated filler, and then press the black button to press the neutral alumina column down. The whole process should be very slow, the sample drop by drop into the column, too fast adsorption, desorption effect is not ideal.