(a) 1, Methane; 2, ethane; 3, propane; 4, n-butane
; 5, n-pentane; 6, n-hexane; 7, n-heptane; 8, n-octane; 9, n-nonane; 10, benzene.
Component Methane Ethane Propane i-Butane n-Butane
Methane 1 0.61 0.36 0.21 0.06 (481) (173) (31) (56) Ethane 1 0.71 0.31 0.06 (166) (30) (52) Propane 1 0.87 0.76 (23) (47) i-Butane 1 0.91 (21) n-Butane
1 Ethylene Hydrogen Component Ethylene Hydrogen Methane 0.46 0.19 (343) (298) Ethane 0.69 0.55 (300) (273) Propane 0.65 0.49 (126) (120) i-Butane 0.58 0.49 (21) (15) n-Butane
0.46 0.38 (40) (38) Ethylene 1 0.27 (184) Hydrogen 1 The numbers in brackets indicate the numbers of samples included in the calculation.
With respect to the detailed LLNL N-Butane
mechanism, the laminar premixed flame model was calculated under a pressure of 1 atm, unburned temperature of 298 K, equivalence ratio of 0.6~1.2, and mass flow at the inlet equal to 0.02 g/([cm.sup.2]/sec).
To obtain consistent [s.sub.L]-values for pure methane, the USC mechanisms have only been used to calculate the relative influence of admixing propane or n-butane
. This relative influence has been applied to the absolute [s.sub.L] values for pure methane, calculated with the GRI-Mech 3.0.
It had a vapour pressure of 96.7 kPa (ASTM D5191) and contained 8.16%/mass n-butane
and 2.60%/mass isobutane (CAN/CGSB-3.0 no.14.3).
As it can be seen, following an isobaric density curve, the gradients of the density of propene (Figure 5) have their maximum between ~100[degrees]C and 150[degrees]C dependent on the pressure, while the density of n-butane
(Figure 7) rapidly drops between 152[degrees]C and 180[degrees]C.
For the others, such as propane and n-butane
, their features have slight cross-sensitivity, and more than two features are needed.
(purity 99%, BOC Canada Inc.) was used as the physical blowing agent.
Now, we have succeeded in checking the theory for a three component system made of methane, dodecane and n-butane
,'" explains Sagbir.
Where F is feed consists of propane, i-butane, n-butane
, i-pentane, n-pentane; D is distillate; B is bottoms; C is condenser duty and R is reboiler duty.
The materials processing section describes chemically deposited beryllium iodide thin films, catalytic dehydrogenation of n-butane
over activated coal, rubber seed oil-based polyurethane composites, and the physical properties of Nigerian clays.
VIT experiments have been conducted using the two standard gas-oil systems of n-decane-C[O.sub.2] at 37.7[degrees]C and live decane (consisting of 25 mole% methane, 30 mole% n-butane
and 45 mole% n-decane)-C[O.sub.2] at 71.1[degrees]C for comparison with EOS calculations.