The Function and Installation of Neutral Alumina

Flash column> is usually used for the chromatography experiment to separate the complicated compounds by pressurizing air. This not only helps provide separation result, but also cuts down on the amount of time required to run column.

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, blowing, and rotating effects on the material, so the material is micronized by centrifugation, shearing, collision, and friction.
Chromatographic Silica Gel Flash Columns
Strengthened mass and heat transfer. 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 for our product. Don’t hesitate to contact us.

Advantages of HAWACH Flash Column
1.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.
2.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.
3.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.
4.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 use of dry loading column can wait for the post after drying the direct loading column, so that the filler precipitation is uniform, to elute, so that the column bed to maintain balance, and then can be sampled. 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.