Testing Specific to Thickening

In addition, the properties column becomes divided into sub-categories and the limits set decrease, the test for the soot-induced thickening of the lubricant changes in several parameters. Table 17.8. The engine test becomes progressively more severe, from the Mack T-8 to the Mack T-11. At the same time, as an example, the viscosity properties for each specification become more differentiated, from ... 

Currently, site-specific tests are often conducted to estimate the consumption and effects of additives (Moser and Owens, 1991). Some significant major process variables to examine when considering use of an additive are additive concentration, pH of the absorber feed slurry, and dissolved calcium concentration (Moser et al., 1990). Other important factors to consider in additive use are pH meter maintenance and opmtion, thickener operation, absorber and mist eliminator plugging, foaming (caused by soap-like impurities) in the recirculation tanks, system water balance, and corrosion of the additive feed system (Babcock Wilcox, 1992B). 

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