Thermal oxidation determination

In terms of an economic determination, gas temperature adjustment is often the most important cost factor in determining whether to use a biofilter or a more conventional system. If the process gas stream is at an extremely high temperature (-i-I00° C), the cost of cooling the inlet gas stream might favor more conventional methods for odor control such as thermal oxidation. 

The VPD method orignally was developed to determine metal trace impurities on thermally oxidized or bare silicon surfaces in combination with atomic absorp-... 

ISO 4577, Plastics - Polypropylene and propylene-copolymers - Determination of thermal oxidative stability in air - Oven method, 1983. 

ISO 4577 1983 Plastics - Polypropylene and propylene-copolymers - Determination of thermal oxidative stability in air - Oven method ISO 7279 1984 Polypropylene (PP) fittings for pipes under pressure - Sockets for fusion using heated tools - Metric series - Dimensions of sockets ISO 7671 2003 Plastics piping systems for soil and waste discharge (low and high temperature) inside buildings - Polypropylene (PP)... 

Fourier transform NMR spectroscopy, polyethylene thermal oxidation, 695 Fourier transform-Raman spectroscopy hydroperoxides, 692 nitrile hydrolysis, 702 see also Raman spectroscopy Four-memhered peroxides, 164, 1212-13 FOX (Xylenol Orange-ferric complex) assay hydrogen peroxide determination, 628, 632, 657, 658... 

Particle emissions, diesel fuel additive, 624 Partition number, conjugated dienes, 671 Pasteurization, lactoperoxidase, 612, 631, 634 Paterno-Buchi triplet 1,4-diradical, 290-1 PCPO see Bis(pentachlorophenyl) oxalate Pentacoordinate silyl peroxides, 808-10 Pentacosane, thermal oxidation, 685 O -Pentafluorobenzylhydroxyamine, aldehyde determination, 670... 

To determine if thermal oxidation is cost effective at a given site, the following criteria are evaluated contaminant flow rate, inlet contaminant concentration, regulatory requirements, fuel costs, and uses for heat recovery of the combustion waste stream (D17730U, p. 3). 

Let us now consider what we mean by the reactivity of a hydrocarbon in autoxidation. One measure is how fast it oxidizes by itself at unit concentration and unit rate of initiation. (Rates of thermal oxidation at unknown rates of initiation are not useful enough to be considered.) The first two columns of figures in Table VII give such comparisons in terms of kp/(2kt)l/l at 30° and 60°C. and determine the order in which hydrocarbons are listed in the table. The results of Ingold and Sajus agree fairly well the orders of reactivity are identical except for a trivial difference with the xylenes. The stated quotients at 60°C. are uniformly 2 to 3 times as large as at 30°C. for sec-butylbenzene and more reactive hydrocarbons but 3 to 6 times as large for less reactive hydrocarbons. 

JFTOT An acronym for Jet Fuel Thermal Oxidation Test. It is a measurement by ASTM D-3241 to determine the tendency of jet fuel to form deposits when heated. 

Fig. 11. The mechanical valves can be replaced by thermal or chemical modulating devices. In principle, this modification circumvents the need of reliable mechanical valves and offers a more flexible system s . An example is the thermal oxidative modulation of methane in air. Figure 12 shows a concentration profile during 8 days, determined with an experimental modulation CC set up...

The isolation and structure elucidation of dimers formed as the result of thermal oxidation of fats during deep frying has been of great interest. However, the compositional determination of this fraction from used or heated fats and oils has been neglected because of the difficulties encountered during the isolation of dimers from heated fats and the complexity of the structures present within this fraction. 

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