Air, nitrogen

Figure 7-50. Effects of pressure on limits of flammability of ethane-nitrogen-air mixture at 26°C. By permission, U.S. Bureau of Mines, Bulletin 627 [43],...

For the sake of brevity, the so-called cool flame techniques based upon the use of an oxidant-lean flame such as hydrogen/nitrogen-air, have not been included. 

Fig. 19. The coefficient B1% for nitrogen (air)-fcarbon monoxide. O, measurements of Webster , Gratch , Michels and Boerboom V, Pfefferle, et al. A, Cottrell, et al.

Kelvin effect. It was found that in the case of oxygen, nitrogen, air, and carbon dioxide, there was a cooling effect, so that x is... 

In other work, the effects of nitrogen, air, oxygen, and humidity on the RTF and RTF of benzoCf)quinoline adsorbed on silica gel chromatoplates are being investigated. The results indicate that the RTF is affected very differently than the RTF. 

Figure 4.17 Effect of pressure on limits of flammability of natural gas-nitrogen-air mixtures at 26 °C (taken from Zabetakis [5])...

An optical flame sensor installed at the beginning of the pipeline is the most suitable device for such an isolation system, since the propagating flame from the explosion has to be detected and extinguished. Pressure detectors alone are, in principle, not suited to the case on hand because there is no distinct separation between the pressure and flame fronts for explosion in pipelines. Optical ir sensors that have a relatively low sensitivity to daylight are normally chosen and have proved themselves amply in industrial practice. Therefore, daylight into the pipe in the vicinity of the sensor must be avoided. It is necessary to flush the optical lens with gas (e.g., nitrogen, air) to keep it dust-free. 

Methanol or dimethyl ether feeds were fed from an ISCO positive-displacement pump. Liquid products were collected in a room-temperature trap and gaseous products were analyzed by on-line gas chromatography and volumes measured by a wet-test meter. The catalyst could be regenerated in-situ by switching to a nitrogen/air mixture. 

Ritter, J. A., D. H. Stedman, and T. J. Kelly, Ground-Level Measurements of Nitric Oxide, Nitrogen Dioxide and Ozone in Rural Air, in Nitrogenous Air Pollutants Chemical and Biological Implications, pp. 325-343, Ann Arbor Science Publishers, Ann Arbor, MI., (1979). 

Barker, J., Mapson, L. W. (1950). The ascorbic acid of potato tubers. III. The influence of storage in nitrogen, air and pure oxygen. New Phytol, 49,283. 

A simple numerical soln is developed. General theory developed is check by expts with expln flame of 03 andO. for which complete and reliable kinetic data are available. General theory is applied to mixts of Methane and Nitrogen air, helium air, and argon air. 

Sources of dry, high-purity nitrogen, air, and helium input to the TGA equipment... 

Regenerator flue gas left the top of regenerator through porous stainless steel filters to pressure control valve PRC-6, to an orifice, and a sample tap. From this point the flue gas could be vented, as shown on the flow sheet for nitrogen-air once-through... 

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