Ignition ethane

Goetschel, C. T. et al., J. Amer. Chem. Soc., 1969, 91, 4706 It is a very powerful oxidant, addition of a small particle to small samples of benzene or 2-propanol at ambient temperature causing ignition. A mixture prepared at — 196° C with either methane or ethane exploded when the temperature was raised to —78°C. See other oxidants... 

Ethane is pumped through a maze of 4- to 6- inch diameter rubes where it is heated up to about 1500°F and cracks. The ethane, by the way, never comes in direct contact with the fire. Otherwise, it would ignite. It stays inside the tubes. 

Equation (25) accounts for the NTC range observed for the ignition of ethane. Essentially, these reactions are refinements of the Semenov mechanism, since unimolecular reactions are important pathways in the oxidation of ethane. 

Ethane — Fire Hazards Flash Point (deg. F) -211 Flammable Limits in Air (%>) 2.9 - 13.0 Fire Extinguishing Agents Stop flow of gas Fire Extinguishing Agents Not To Be Used Data not available Special Hazards of Combustion Products Not pertinent Behavior in Fire Not pertinent Ignition Temperature (deg. F) 940 Electrical Hazard Class I, Group D Burning Rate 13 mm/min. Chemical Reactivity Reactivity with Water No reaction Reactivity with Common Materials No... 

The location of the CO peak indicates the temperature regime for onset of fast oxidation for each hydrocarbon. At the reaction conditions of the flow reactor, the characteristic temperature regime for oxidation differs widely between fuels. Compared to methane, the C2 hydrocarbons are consumed at much lower temperatures at a given reaction time. This is consistent with the general observation that the C2 hydrocarbons have quite different ignition characteristics compared to methane [427]. As a consequence the presence of ethane (C2H6) and higher hydrocarbons in natural gas has a considerable influence on induction times. 

Y. Tan, P. Dagaut, M. Cathonnet, and J.-C. Boettner. Oxidation and Ignition of Methane-Propane and Methane-Ethane-Propane Mixtures Experiments and Modeling. Combust. Sci. Techn., 103 133-151,1994. 

It has been reported 52) that addition of 10% methane to a carbon monoxide-oxygen mixture raises the ignition temperature by 100° C. However, the limits for carbon monoxide-oxygen and methane-oxygen lie in about the same temperature range. A similar inhibition of the second limit of hydrogen-oxygen by ethane has been observed (6, 7). 

Dichloroacetylene is rather endothermic (ALtf (g) +149.4 kJ/mol, 1.57 kJ/g) and a heat-sensitive explosive gas which ignites in contact with air. However, its azeotrope with diethyl ether (55.4% dichloroacetylene) is not explosive and is stable to air [ 1 ] [2]. It is formed on catalysed contact between acetylene and chlorine, or sodium hypochlorite at low temperature or by the action of alkali upon polychloro-ethane and -ethylene derivatives, notably trichloroethylene [3]. A safe synthesis has been described [4], Ignition of a 58 mol% solution in ether on exposure to air of high humidity, and violent explosion of a cone, solution in carbon tetrachloride shortly after exposure to air have been reported. Stirring the ethereal solution with tap water... 

During maintenance work, simultaneous release of chlorine and acetylene from two plants into a common vent line leading to a flare caused an explosion in the line [10]. The violent interaction of liquid chlorine injected into ethane at 80°C/10 bar becomes very violent if ethylene is also present [11]. The relationship between critical pressure and composition for self-ignition of chlorine—propane mixtures at 300°C was studied, and the tendency is minimal for 60 40 mixtures. Combustion is explosive under some conditions [12]. Precautions to prevent explosions during chlorination of solid paraffin hydrocarbons are detailed [13]. In the continuous chlorination of polyisobutene at below 100°C in absence of air, changes in conditions (increase in chlorine flow, decrease in polymer feed) leading to over-chlorination caused an exotherm to 130°C and ignition [14],... 

Acetaldehyde (ethanal, CH3CH=0, melting point-123.5°C, boiling point 20.1°C, density 0.7780, flashpoint -38°C, ignition temperature 165°C) is a colorless, odorous liquid. 

Suppose an initially empty tank is filled with 1000 mol of ethane and the remainder with air. A spark is used to ignite this mixture and the following combustion reaction takes place ... 

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