Deep cleaning

Deep cleaning technologies are required in order to meet future environmental regulations for SOx, NOx, ammonia, hazardous air pollutants (HAPs), carbonyls, Hg, As, and others. 

Huggins, F.E., Srikantapura, S., Parekh, B.K. et al. (1997) XANES spectroscopic characterization of selected elements in deep-cleaned fractions of Kentucky no. 9 coal. Energy and Fuels, 11(3), 691-700. 

The discrepancy between the ASTM organic sulfur values for coals and the sulfur that remains in "deep-cleaned coals has been noted elsewhere (Simmons, F.J., Otisca Industries, Ltd., Syracuse, NY, personal communication, 1988.). Tlie ASTM organic sulfur values obtained with -60 mesh raw coal samples are usually greater than the total sulfur values in deep-cleaned ultrafine coal used in slurries for fuels. It is proposed that the HN03-extraction method for organic sulfur can be used to determine an accurate value for the sulfur content in deep-cleaned coals. 

A method for the direct determination of the organic sulfur in coal using extraction with hot nitric acid was developed. The method yields total organic sulfur values that are much closer to the sulfur values found in deep cleaned coals and with greater precision than the organic sulfur values obtained by ASTM Method D 2492. 

Physical methods can effectively remove some trace constituents from coal, especially if deep cleaning methods are employed (7 ). However, such methods do not adequately remove finely disseminated minerals or organically bound elements, thereby necessitating chemical treatments for removing such components. 

The effect of pyrite removal was also clearly demonstrated ( 0). For Burning Star coal (Illinois No. 6), the oil yield for run-of-mine coal (4.8% pyrite) was 47%. Conventional cleaning to 1.5% pyrite resulted in an oil yield of 42%. Deep cleaning to 0.5% pyrite followed by addition of 5.3% pyrite to the clean coal produced an oil yield of 51%, even though the operating pressure (1800 psi) was lower than in the other runs (2250 psi). 

Foamy Liquid Gel Foamy Vegetable Deep cleans and leaves a pleasant... 

Catalytic methods of gas cleaning are used very often in modern industry as a result of the possibility of very deep cleaning of the waste gas. Up to 99.9% of pollutant can be separated from the waste gas by this method. However, the disadvantage of this method is the formation of new compounds, which must be use-able. In the example shown of waste gas cleaning from the H2S, the formed byproduct can be used in the chemical industry. However, the amount of sulfur formed in crude oil refineries is often so high that it cannot be moved completely to the chemical industry. It then becomes important to find new ways of using sulfur. 

Type V The plant produces different saleable products that vary in quality, including deep-cleaned coal that is low in sulfur and ash. 

Deep-cleaned coal excellent middle-cleaned coal none to fair Multiple-Stream coal preparation of two cleaned coal products deep-cleaned coal and middle grade coal ... 

Primary surfactants or deep cleaning agents are used to provide basic cleaning. 

P.O. 62 is a very opaque, extremely yellowish orange pigment that produces deep, clean, light- and weatherfast shades. It is used throughout the paint industry including automotive finishes as well as in refmishes and in general industrial paints. 

ScufFed-up suede The best tool to erase surface marks is a dry cleaning bar, usually sold with a stiff-bristle brush. The bar is like a pencil eraser use it to remove marks from suede. Then use the brush to bring the nap back up. Finish with a deep-cleaning suede spray. 

The second deviation from the HRI CTSL is the continued use of the CSD unit to remove the ash and solids. Improvements in the CSD unit have reduced organic rejection to the same levels that HRI achieves with filtration. These changes have allowed the Wilsonville plant to achieve distillate yields of up to 77 percent (maf coal) with a cleaned Ohio 6 bituminous coal. " More typical yields of 70 percent (maf coal) were found with Illinois 6 bituminous coal. " Recent studies demonstrated the beneficial effects on the distillate yield of deep-cleaning the coal, achieving a distillate yield of 74 percent with a Pittsburgh 8 bituminous coal. ... 

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