Quick stabilization process

Olsen s quick stabilization process is the result of further thinking along this same line and represents an ingenious application of a simple principle of colloid chemistry. After the nitrocellulose has been thoroughly pulped, and after the easily decomposed cellulose sulfate, etc., have been hydrolyzed, there remains... 

Assumption 5. Transfer processes as within the cell have been regarded as quasistationary. The typical time of the processes in the electrode (time of a charging or discharging being Ur-I04 s) is longer than the time of the transitional diffusion process in the elementary cell tc Rc2/D 10"1 s (radius of the cell is Rc 10"5 m, diffusion coefficient of dissolved reagents is D 10"9 m2/s). Therefore, the quasistationary concentration distribution is quickly stabilized in the cell. It is possible to neglect the time derivatives in the transport equations. 

Figure 65. Fred Olsen. Has done important work on cellulose and has made many improvements in detonating explosives, high explosives, and smokeless powder in particular, has invented processes for the quick stabilization of nitrocellulose and for the production of ball-grain powder. Chief of Chemical Research, Aetna Explosives Company, 1917-1919 Chemical Adviser, Picatinny Arsenal, 1919-1928 Technical Director, Western Cartridge Company, 1929—.

The process for the manufacture of ball-grain powder which Olsen and his co-workers have devised 26 combines nicely with Olsen s process for the quick stabilization of nitrocellulose to form a sequence of operations by which a finished powder may be produced more rapidly and more safely than by the usual process. It supplies a convenient means of making up a powder which contains non-volatile solvents throughout the mass of the grains or deterrent or accelerant coatings upon their surface. 

The cup contains the solid catalyst and prevents its contact with the liquid reactants while exposing the catalyst to pretreatment at real process temperature and pressure conditions. Thus, activation of the catalyst with simultaneous gas (hydrogen) saturation of both the protective coating and the liquid (oil) phase can be achieved. An excellent and quick stabilization of the temperature and pressure can be obtained. 

Admixes to the soil in stabilization process compound with the minerals and soil grains, and may lead to generation of new chemical mix with different properties in comparison with the primary properties of soil. Lime as an ordinary stabilizer compounds with soil in the form of quick-lime (CaO) or hydrated lime (Ca(OH)2) can improve soil physical properties [7]. 

Oiled debris, beach material, and sorbents are sometimes disposed of at landfill sites. Legislation requires that this material not contain free oil that could migrate from the site and contaminate groundwater. Some governments have standard leach-ability test procedures that determine whether the material will release oil. Several stabilization processes have been developed to ensure that free oil does not contaminate soil or groundwater. One process uses quick lime (calcium oxide) to form a cement-like material, which can be used on roads as a dust-inhibitor. Another form of disposal is to process liquid oil in a bioreactor and thus attempt to break it down. This is usually not successful because of the many slowly degraded components in some oils. 

The degree of bed expansion contributes to the efficiency of fluidised bed/expanded bed adsorption as a composite function of liquid distribution, liquid and particle properties (size, shape and density) and process conditions. Besides being an important design feature, the degree of bed expansion may be used as a quick and simple measure of bed stability.48... 

In this burner configuration, fuel is injected directly into the combustion chamber and hence, one would initially categorize it as a nonpremixed burner. However, the overall combustion process is quite complex and involves features of nonpremixed, partially premixed, and stratified combustion, as well as the possibility that the autoignition of hot mixtures of fuel, air, and recirculated combushon products may play a role in stabilizing the flame. Thus, while one may start from simple concepts of nonpremixed turbulent flames, the inclusion of local exhnchon or flame lift-off quickly increases the physical and computational complexity of flames that begin with nonpremixed streams of fuel and oxidizer. 

Cascade Blue diamine derivatives are soluble in aqueous solution. A concentrated stock solution may be prepared in water, dissolved quickly, and an aliquot immediately added to a buffered reaction medium. For aqueous reactions, 0.1M MES, pH 4.7-6.5, may be used to stabilize the pH during the coupling process. Avoid amine- or carboxylate-containing buffers such as Tris or glycine, since these can compete with the coupling reaction. 

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