Absorbers diameter

Distillation column, tray absorber Diameter, height, internal pressure, material of construction, tray type, number of trays, condenser, reboiler (see item 3)... 

Selective absorption of olefins and aromatic hydrocarbons was carried out in an absorber (diameter 6 mm) containing 2 ml of concentrated sulphuric acid on a layer of fibre-glass. The length of the packing layer was 43 cm. At the outlet of the absorber a layer of molecular sieve 4A was placed this sieve adsorbs methane, water, ethane, acetylene and propylene, but not propane and hi -molecular-weight compounds. A few granules of Ascarite were also added. The reactor absorbs olefins, toluene and higher aromatic hydrocarbons at 54°C benzene is absorbed incompletely. 

An improved type with measures taken as to Cr plating on cladding tubes and reduction of neutron absorber diameters has been introduced, and its performance is being studied. 

These assemblies are made of a spider on which 2,5 to 4 m long rods are welded. These rods (16 to 24 per assembly) contain neutron-absorbing material. The rod envelope is made of 0,5 to 1 mm thick steel. The rod diameter is approximately 10 mm. 

The mixture to be separated is dissolved in a suitable solvent and spotted on to a pencilled line at the bottom of the t.l.c. plate, ca. i o-i 5 cm. from the end. A suitable dropping tube may he made by drawing out the middle of a m.p. tube with a micro-burner and breaking the tube in the middle. The dropper is filled by capillary action and is discharged when the liquid at the tip drops on to the untouched absorbent surface the spot should be 2 5 mm. in diameter. 

UV/Vis detectors are among the most popular. Because absorbance is directly proportional to path length, the capillary tubing s small diameter leads to signals that are smaller than those obtained in HPLC. Several approaches have been used to increase the path length, including a Z-shaped sample cell or multiple reflections (Figure 12.44). Detection limits are about 10 M. 

Scrubbing andDesliming. Sylvinite ores in North America contain 1—6 wt % water-insoluble clays. A significant portion of these clays is less than 0.002 mm in diameter. If not removed or controUed in some manner, clay bodies that are dispersed in the flotation solution, ie, brine saturated with KCl and NaCl, absorb the amine coUector, which is added to effect flotation separation, and the coUector is rendered ineffective. Clay is the most troublesome impurity encountered in the processing of sylvinite ore. 

Surgical sutures are sterile, flexible strands used to close wounds or to tie off tubular structures such as blood vessels. Made of natural or synthetic fiber and usually attached to a needle, they are available ia monofilament or multifilament forms. Sutures are classified by the United States Pharmacopeia (USP) (1) as either absorbable or nonabsorbable. The USP also categorizes sutures according to size (diameter) and Hsts certain performance requirements. Sutures are regulated by the Food and Dmg Administration (FDA) as medical devices under the Food, Dmg, and Cosmetics (FDC) Act of 1938, the Medical Device Act of 1976, and the Medical Device Reporting regulation of 1995. 

D = outside diameter of pipe, in (mm) y = resultant of total displacement strains, in (mm), to be absorbed by the piping system E = developed length of piping between anchors, ft (m)... 

Some performance data of plants with DEA are shown in Table 23-11. Both the absorbers and strippers have trays or packing. Vessel diameters and allowable gas and liquid flow rates are estabhshed by the same correlations as for physical absorptions. The calciilation of tower heights utilizes data of equilibria and enhanced mass-transfer coeffi-... 

---