Ministry of Higher Education

&$.$ Scientific Research

Tikrit University

College of Petroleum Processes Eng.

Dept.: Petroleum & Gas Refining Eng.

Class: $2^{nd}$ Stage Morning, & Evening Studies

Subject: Properties of Petrol&NG$.$

Time: $3$ hours

Form: $3$

Note: answer only four questions $($including Q$1)$

all questions have equal marks

Q$1$: For a given crude oil; $1-$ Draw a TBP & API curve on the same figure, $2-$Determine volumetric percentages, mid boiling point, and API gravities of light, middle and heavy fractions, $3-$Find the value of $Kw$ if $\frac{A}{P}$I $=43.$

$[25$ point$]$

$\backslash$table$[[$Vol $\%,$IBP,T$10,$T$20,$T$30,$T$40,$T$50,$T$60,$T$70,$T$80,$T$95],[$TBP $F,160,270,335,400,480,560,610,680,820,1100],[$SG at $60F,,0\mathrm{.}720,0\mathrm{.}750,0\mathrm{.}780,0\mathrm{.}800,0\mathrm{.}820,0\mathrm{.}835,0\mathrm{.}850,0\mathrm{.}870,0\mathrm{.}900]]$

Q$2$: For a given finished petroleum products, $1-$ What is the name and carbon range of each product? $2$ Draw ASTM D$86$ curve for all products on the same figure, $3-$Draw a EFV curve for all products on the same Figure.

$[25$ point$]$

$\backslash$table$[[$Vol $\%$ distilled,T$0,$T$5,$T$10,$T$20,$T$30,$T$40,$T$50,$T$60,$T$70,$T$80,$T$90,$T$95,$T$100],[$P$1$ D$86C,37,42,49,54,66,76,93,123,133,156,168,180,188],[$P$2$ D$86C,170,180,183,186,189,193,196,199,203,208,215,221,245],[$P$3$ D$86C,203,228,234,246,253,258,264,270,277,283,293,303,314]]$

Q$3$: The quality report for some petroleum products are given in the Table below. Find the missing values for each product.

$[25$ point$]$

$\backslash$table$[[$Product name,Sp$.$gr$,$T$10,$T$50,$T$90,$RVP$,$RON,MON,PON$],[$Gasoline$,0\mathrm{.}7330,55,88,150,,,,],[$Product name,Sp$.$gr$,$T$10,$T$50,$T$90,$FP$,$SP$,$AP$,$S content$],[$Kerosene$,0\mathrm{.}7880,177,189,211,,,,],[$Product name,Sp$.$gr$,$T$10,$T$50,$T$90,$DI$,$V$,,],[$Diesel$,0\mathrm{.}8212,219,266,331,,$CP$,$S content,$]]$

Q$4$: For a given gas mixture; calculate HHV$,$ LHV$,$ and Wobbe index. For the same gas mixture, find VABP, MeABP, and $Kw$; knowing that $H^f$@$298$ values for $H_{2}O(g)$ and $C{O}_2(g),$ are $-241\mathrm{.}81$ and $-393\mathrm{.}51k\frac{J}{m}ol,$ respectively.

$[25$ point$]$

$\backslash$table$[[$Gas composition,Weight$\%,$M$.$wt$,$Sp$.$G$,$B$.$p $(($:$R\},H^{\text{'}}$@$298k\frac{j}{m}ol$