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H2SO4 mist

Standard diesel fuel contains up to 0.3 wt % sulfiu . In the near future this will be limited to 0.05 wt % [5]. This sulfur is converted mainly to SO2 (more then 95 %), and the remainder leaves the engine as SO3, H2SO4 mist, or some other oxide form. About 1-3 percent is collected during the EPA transient test cycle as H2SO4 mist [7]. [Pg.647]

Droplets of H2SO4 resulting from absorption. H2SO4 mist emission due to inefficient absorption and inefficient demister provided in the final absorption tower. Modem plants also install specially designed candle type demisters in the FAT exit. Many other pollutants may be emitted in trace amounts depending on the source... [Pg.27]

The DC/DA process reduces the SO2 loss to less than 2 kg of S02/tonne of H2SO4. High- efficiency mist eliminators are also required to limit the loss of H2SO4 mist to less than 0.05 kg/tonne of H2SO4. Thus, the recovery in a DC/DA plant should be at least 99.7%. [Pg.299]

Most of the work on toxicity data of H2SO4 mist has been done using the guinea pig because it appears to be a better model for man than other rodents. Consistent with evidence from human studies, the toxicity of H2SO4 mist in animals is also dependent on the ambient humidity and the aerosol particle size. The relative humidity affects particle size due to the hygroscopic nature of the acid droplets (Wolff et al, 1979). [Pg.805]

There is little doubt in the literature that the guinea pig is considerably more sensitive to the effects of inhalation of H2SO4 mist than other laboratory species and other larger animals. [Pg.805]

No changes in pulmonary function attributable to H2SO4 mist were seen subjects undertook alternate 10-minute periods of exercise and rest during exposures (Linn et al., 1986). [Pg.805]

For H2SO4 mist, the DTL is based principally on an examination of LC50 data from the guinea pig, and is given a value ... [Pg.806]

It is clear that the ESP cannot remove dry SO3 gas and the moisture available to convert SO3 gas to SO3/H2SO4 mist originates from residual water in the process air and water from sulphur. [Pg.168]

SO3/H2SO4 mist. The acid mists are formed as a result of residual moisture in the dried process air ... [Pg.207]

Tail gas scrubbers often use basic solutions to further remove sulfur compounds occurring as SO2, SO3, and H2SO4 mist. Most are operated continuously and some only during start-up conditions. They are very efficient, often lowering tail gas SO2 concentrations from 200-3000 ppmv down to <20 ppmv. [Pg.338]

The continued worldwide lowering of ambient SO2 concentration standards is expected to further increase the use of acid plant tail gas scrubbing as an effective means of decreasing acid plant SO2, SO3, nitrogen oxides, and H2SO4 mist emissions. [Pg.339]

Industrial smog consists primarily of particles (ash and smoke), S02(g), and H2SO4 mist. A variety of industrial operations produce significant quantities of S02(g), but the main contributors to atmospheric releases of S(32(g) are power plants burning coal or high-sulfur fuel oils. SO2 can oxidize to SO3, especially when the reaction is catalyzed on the surfaces of airborne particles or through reaction with NO2 ... [Pg.1063]

In turn, SO3 can react with water vapor in the atmosphere to produce H2SO4 mist, a component of acid rain. Also, the reaction of H2SO4 with airborne NH3 produces particles of (NH4)2S04- The details of the effect of low concentrations of SO2 and H2SO4 on the body are not well understood, but it is clear that these substances are respiratory irritants. Levels above 0.10 ppm are considered potentially harmful. [Pg.1064]

The inductive effect refers to the shifting of electron density from one atom toward another through the chain of cr bonds that connects them. Industrial smog is air pollution in which the chief pollutants are S02(g), 503(g), H2SO4 mist, and smoke. [Pg.1372]


See other pages where H2SO4 mist is mentioned: [Pg.88]    [Pg.237]    [Pg.237]    [Pg.805]    [Pg.806]    [Pg.806]    [Pg.806]    [Pg.807]    [Pg.811]    [Pg.811]    [Pg.812]    [Pg.175]    [Pg.179]   
See also in sourсe #XX -- [ Pg.175 ]




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