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Hydrocarbon fraction, light

Basically, a gas absorption tower is a unit in which the desirable light ends components are recovered from the gas feed by dissolving them in a liquid passing through the tower countercurrently to the gas. The liquid absorbent is called lean, oil, and it usually consists of a hydrocarbon fraction in the gasoline boiling range. After the absorption step, the liquid which now contains the desired constituents in solution is referred to as fat oil. A similarly descriptive nomenclature is applied to the gas, which is referred to as wet gas when it enters the tower and as dry gas when it leaves the absorber. [Pg.92]

Existing processes for producing oil and gas products have required the development of phase behavior and other thermodynamic data on light hydrocarbons, heavy hydrocarbons, and the acid gases CO2 and HoS. For this reason a lot of basic data are available on these systems but there is still a lot we don t know such as how to characterize the behavior of hydrocarbon fractions containing numerous paraffin, naphthene, and aromatic components. Additional basic data on these systems would help to improve the efficiency of these existing processes. [Pg.306]

Still gas is broad terminology for low-boiling hydrocarbon mixtures and is the lowest-boiling fraction isolated from a distillation (still) unit in the refinery. If the distillation unit is separating light hydrocarbon fractions, the still gas will be almost entirely methane, with only traces of ethane (CH3CH3) and ethylene... [Pg.64]

The petroleum ether solvents are a specific-boiling-range naphtha, as is ligroin. Thus, the term petroleum solvent describes a special liquid hydrocarbon fraction obtained from naphtha and used in industrial processes and formulations (Weissermel and Arpe, 1978). These fractions are also referred to as industrial naphtha. Other solvents include white spirit, which is subdivided into industrial spirit [distilling between 30 and 200°C (86 to 392°F)] and white spirit [light oil with a distillation range of 135 to 200°C (275 to 392°F)]. The special value of naphtha as a solvent lies in its stability and purity. [Pg.258]

Changes in the chemical composition of the kerosene during volatilization also affect the physical properties of this petroleum product. Table 16.8 summarizes the effect of volatilization on kerosene viscosity, surface tension, and density when 20%, 40%, and 60% of the initial amount has been removed by the partial transfer of light hydrocarbon fractions to the atmosphere. Only the liquid viscosity is affected, with volatilization having a negligible effect on the density and surface tension of the kerosene. [Pg.355]

Reforming is a relatively clean process. The volume of wastewater flow is small, and none of the wastewater streams has high concentrations of significant pollutants. The wastewater is alkaline, and the major pollutant is sulfide from the overhead accumulator on the stripping tower used to remove light hydrocarbon fractions from the reactor effluent. The overhead accumulator catches any water that may be contained in the hydrocarbon vapors. In addition to sulfides, the wastewater contains small amounts of ammonia, mercaptans, and oil. [Pg.248]

The influence of the process temperature on catalytic hydropyrolysis of biomass/plastic mixture was studied in the range 360 - 460 C. Fig. 3 shows that the highest conversion (91% wt.) of the pine wood / polyethylene mixture (1 1 weight ratio) was observed at 390 C - 430 C in the presence of activated haematite catalyst. Higher tenqieratures promote increased yields of char and gaseous products. At lower temperatures a reduced yield of distillate fraction was observed. In comparison with pyrolysis in inert atmosphere the increased yields of light hydrocarbon fractions (by 1.6 - 1.8 times) and increased degree of mixture conversion (by 1,2 time) were observed for hydropyrolysis process. [Pg.1392]

The relative yields of the kerogen decomposition products are expressed as the fractions f, f2, and fw in Figure 9. The (H20, CO, C02) fraction was set equal to that of Fischer Assay because the amount of water in the liquid product could not be easily determined in the yield experiments. The light hydrocarbon fraction, f, was determined by a combination of the yield and the kinetic data. The light hydrocarbon yields as... [Pg.112]

This condition is a consequence of the high vapor pressure of the light hydrocarbon fraction. Because of the rapid transport out of the particle, this fraction has no possibility to coke. The bitumen, on the other hand, is viewed as a high boiling liquid which can undergo intraparticle coking. The... [Pg.113]

The proposed model can be compared with both the model of Allred ( ) and that of Campbell et al. (8). Allred s model does not have the feature of competing parallel reactions that is essential to the pyrolysis model proposed here. It does, however, have the intermediate product bitumen which reaches a maximum level almost identical to the one in this work. Allred postulates that all kerogen decomposes into bitumen, whereas bitumen in the present work is the remainder of the kerogen after the light hydrocarbon fraction has been stripped off. [Pg.116]


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Hydrocarbon fractions

Hydrocarbons, fractionation

Light fraction

Light hydrocarbons

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