This research included determination of chemical composition of al-ahdaab crude oil (kute-Iraq) using liquidsolid chromatography method. The current study involved separation the components of crude oil by column chromatography was packing with alumina (AL 2 O 3) as a stationary-phases and several solvent as a mobile phase. The results of crude oil fractionations were 17.01% Asphaltene, 82.99% Maltene, which separated to Paraffinic (saturated) 44.11%, Aromatic 30.11% and Resin 4.20%. Crude oil fractionations were characterized using Nuclear Magnetic Resonance 1 HNMR and Fourier Transform Infrared Spectrometer FT-IR to determine the chemical composition of each part, which is that represents the first study and novel results. This study also clarified the paraffinic compounds are the main part of materials in the crude oil composition.

m & Mass flow rate (kg.sec -1 ) Pr Prandtl No., for air (0.7) q Heat added (J.kg -1 ) R Gas constant, for air (287.1 J.kg -1 .K -1 ) V Velocity (m.sec -1 ) Waheb atel performance analysis of a wind 12 θ Incidence angle µ Dynamic viscosity (kg.m -1 .sec -1 ) ρ Density (kg.m -3 ) CFD Computational fluid dynamics

Study and separating of crude oil components from Al-Rashidiya field-Eastern Baghdad-Iraq was achieved. Samples were taken and separated into two important parts Asphaltene and Maltin (saturated, aromatic and resin). The separation was done by organic solvent such as n-hexane. Maltin separated by column chromatography technique (liquid-solid) to basic saturated, aromatic and resin components, this technique called (SARA) (saturated, aromatic, resin and asphaltene). Three absorption layers used, alumina layer Al 2 O 3 , silica SiO 2 and combination layer from Al 2 O 3 and SiO 2. All the components were collected dried and weighted. In order to determining the classification types, isolated compounds

Heating of natural asphalt at high temperatures for a long time lead to oxidation of the asphalt , which starting on the surface while with continuous mixing and heating leads to oxidation to all the asphalt molecules and the texture of oxidized asphalt becomes a solid , glossy, dark black of color. The rheological properties before and after oxidation were studied , the results showed that increase of oxidation time , Lead to reduce the degree of penetration(increased stiffness) and an increment in the softening degree, also the oxidation processes load to increase in the fractional Asphaltene compared with that of maltene parts, Which have been separated and estimated by using manual column liquid -solid chromatography and extraction in parallel with a solvent and precipitant the Asphaltene index I A and Gastl index I C were also calculated, the spectra of FT-IR , U.Vvisible and HNMR showed a change in the physical properties of oxidated since there was Chemo -Physical relationship between a chemical content and Rheological properties of the oxidized asphalt .

The study of springs Abu-Aljeer natural asphalt at proven of al-anbar (Iraq), to find a mean of exploiting the asphalt springs as alternative energy resource, Included two stages The first: Separation the components of asphalt in two ways the first is column chromatography and second represented by extraction-chromatography. The results of separation were 10.20% Asphltene, 89.18% Maltene which separated lately to (Paraffinic 45.23%, Aromatic 28. 39% and Resin 21.66%). The second: Trying to improve the asphalt specifications by using natural materials that are available locally (limestone) with (5, 15, 25, 35%), which have given good results. Rheological properties have been tested, in such average that (virgin Softening was 43 0 C, became 56 0 C, Penetration was 110 dropped 39 and viscosity was 11355 turnedy other 47231cent-Stok, mm 2 \Sec), and flash point ( 179 0 C became 200 0 C), Fractionated parts of asphalt were characterized by (UV), (FT-IR) spectra. This study also clarified paraffin compounds which represent the main part material and the colloidal state is in Gel phase.