Diesel odor

Filter P per Processing. In the fabrication of fuel oil and air filters for vehicles such as motorcycles and diesel locomotives, heat processing of the filter paper is required to cure the resin (usually phenoHc) with which the paper (qv) is impregnated (see Phenolic resins). The cure-oven exhaust, which contains water vapor, alcohols, and dimers and trimers of phenol, produces a typical blue haze aerosol having a pungent odor. The concentration of organic substances in the exhaust is usually rather low. 

Chemical Designations - Synonyms Diesel oil, light Chemical Formula Not applicable. Observable Characteristics - Physical State (as shipped) Liquid Color. Light brown Odor. Characteristic. 

The Diesel engine has excessive emission of smoke and odor from aldehydes and oxygenated aromatics, which are not regulated at this moment. It is approximately 50% larger and heavier than a gasoline engine of the same horse power. However, it does have the virtue of better fuel economy and easier maintenance. 

N.P.Cemansky, Diesel Exhaust Odor and Irritants A Review, J. Air Pollut. Control Assoc., 33(2), 1983, 97-104. 

I. Smoke and Odor During Diesel Fuel Combustion... 

Diesel fuel with a high T-50, for example >575°F (>302°C), will tend to bum with more smoke, soot, and hydrocarbon odor than fuel with a lower T-50. This is basically due to the incomplete combustion and oxidation of a great number of high-boiling-point, high-carbon-content fuel components in a limited-oxygen-content environment. 

Another expl consisting of prilled AN fuel oil and supplied by the DuPont Co is the ANFO-P, which is a free-flowing product of density 0.75 to 0.85g/cc. As the fuel (or diesel) oil of this expl is volatile and of sharp odor, the mixture is not recommended for underground work, but its major application is in large quarry biasring (Ref 8, p62)... 

The minimum fuel/air ratio for ignition is analogous to the lower limit of flammability. It is important in Diesel fuel combustion because partial oxidation will occur in local regions in which the concentration of fuel is less than the minimum or lower limit, but these regions will not ignite or inflame. Consequently, products of partial oxidation giving rise to odor, and possibly deposits, will appear in the exhaust. This is discussed in a subsequent section. 

Aldehydes are usually present in part-per-million concentrations (44> 62 y 138) and are partially responsible for the odorous and irritating properties of Diesel exhaust gas (33y 138). Removal of aldehydes (33) produces significant reduction in odor and irritation. Aldehydes are products of partial oxidation, and their concentration in the ex-... 

Impurities in propane can include water, particulates and foreign matter, and residue which includes dissolved components that are left behind when propane is evaporated. Propane residue can come directly from the refinery or gas processing plant where propane is produced, but more commonly it is picked up as propane is distributed. Sources of the residue include pipelines and tanks that contained gasoline or diesel fuel and that have not been cleaned thoroughly. Propane residue is primarily higher hydrocarbons but may include mercaptan (odorizer) and other materials soluble in hydrocarbons. 

Cg—C16 The nonanes (C9) through about the hexadecanes (C19) are higher-boiling liquids that are somewhat viscous. These alkanes are used in kerosene, jet fuel, and diesel fuel. Kerosene, the lowest-boiling of these fuels, was once widely available but is now harder to find. It is less volatile than gasoline and less prone to forming explosive mixtures. Kerosene was used in kerosene lamps and heaters, which use wicks to allow this heavier fuel to burn. Jet fuel is similar to kerosene, but more highly refined and less odorous. 

Many gas-fired compressors that pump natural gas through millions of miles of pipelines are also equipped with exhaust catalysts to clean emissions at moderate conditions. Even fast-food restaurants are being equipped with catalysts to eliminate odors from the cooking process. The most widely used treatment of exhaust pollutants is that of the catalytic converter present in the exhaust manifold that cleans emissions from the internal combustion engines of gasoline- and diesel-fiieled automobiles and trucks. As modem commercial passenger jets fly above 30,000 feet there is a need to destroy the few ppm ozone that enters the airplane with make-up air to ensure passenger and crew comfort and safety. Radiators on select... 

Why the motor In Treblinka there was certainly an electrical plant, since the camp was not connected to the local power supply. The generator of such a plant was customarily driven by a diesel motor. Since the exhaust fumes of such machinery have an atrocious odor, Wiemik, a layman with respect to the technical facts, obviously believed they made a suitable instrument for murder. After the Red Army had gained control over the area around Treblinka in August 1944, a Soviet investigatory commission quickly got to work and determined that in Treblinka three million people had been killed. However, neither steam nor gas were now named as the method of murder, but instead suffocation by means of chambers which were vacuum-pumped 59... 

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