Absorber hydrocarbon

A general, approximate, short-cut design procedure for adiabatic bubble tray absorbers has not been developed, although work has been done in the field of nonisothermal and multicomponent hydrocarbon absorbers. An analytical expression which will predict the recovery of each component provided the stripping factor, ie, the group is known for each component on each tray of the column has been developed (102). This requires knowledge... 

Fig. 15. Low hydrocarbon emission control system utilising a cross-flow heat exchanger TWC catalyst, A, and a 2eohte-based hydrocarbon absorber system. Cold start HCs are absorbed by the hydrocarbon trap, B, until the cross-flow heat exchanger catalyst is hot enough to destroy the HCs that...

Maxwell s correlation was generated from hydrocarbon data only. Ludwig states that the Drickamer and Bradford correlation is good for hydrocarbons, chlorinated hydrocarbons, glycols, glycerine and related compounds, and some rich hydrocarbon absorbers and strippers. 

Houston, TX 77252 gases, also calculates hydrocarbons absorbed and (713) 5204444 stripped. 

Polyaromatic hydrocarbons absorb strongly to humus and other soil components, rendering these contaminants difficult to remove by thermal, physical, or chemical means, and unavailable for biodegradation. To desorb polyaromatic hydrocarbons from soil, surfactant flooding processes and soil-washing processes or treatments to enhance the biodegradation of polyaromatic hydrocarbons have been considered. 

H. J. Delhommer and C. O. Walker. Method for controlling lost circulation of drilling fluids with hydrocarbon absorbent polymers. Patent US 4633950,1987. 

As seen in Figs. 10.5-10.11, polycyclic aromatic hydrocarbons absorb in the actinic UV, A > 290 nm (Karcher et al., 1985). Their tt -> tt transitions are strong (much more intense than the corresponding n —> tt transitions in aromatic carbonyl compounds),... 

Upper repulsive states exist for polyatomic molecules just as they do for diatomic molecules. The alkyl halides all show absorption which corresponds to dissociation into alkyl radicals and halogen atoms. Saturated hydrocarbons absorb only below 1800 A unless rings with considerable strain are present. The first absorption region for the simple alkanes is a continuum and dissociation must immediately follow the absorption act. The simple alcohols also show continua. 

Behymer, T.D. and R.A. Hites. 1985. Photolysis of polycyclic aromatic hydrocarbons absorbed on simulated atmospheric particulate. Environ. Sci. Technol. 19 1004-1006. 

Figure 11 shows the high pressure gas purification system used to concentrate the olefins. The carbon dioxide was removed very selectively with a hot carbonate solution at a system pressure of about 3100 kPa. This resulted in a relatively pure stream of carbon dioxide being rejected. The semipurified pyrolysis gases then passed to the hydrocarbon absorber where the hydrocarbons other than methane were absorbed. The low molecular weight olefins were then boiled off the absorbing oil to result in a concentrated product stream. At this point in the process, several different uses for the olefins can be imagined (a) the olefins could be further... 

TABLE 14.7 Specifications and Results for Hydrocarbon Absorber Operation... 

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