Capacity temperature impact

Pulverization occurs by impact, attrition, or crushing. The capacity of a pulverizer depends on the grindability of the coal and the fineness desired, as shown by Fig. 27-19. Capacity can also be seriously reduced by excessive moisture in the coal, but it can be restored by increasing the temperature of the primary air. Figure 27-20 indicates the temperatures needed. For PC boilers, the coal size usually is 65 to... 

Generally, the occurrence of a specific mode is determined by droplet impact properties (size, velocity, temperature), surface properties (temperature, roughness, wetting), and their thermophysical properties (thermal conductivity, thermal capacity, density, surface tension, droplet viscosity). It appeared that the surface temperature and the impact Weber number are the most critical factors governing both the droplet breakup behavior and ensuing heat transfer. I335 412 415]... 

Decrease butadiene yield while increasing potential alkylate feed. Unlike increasing riser top temperature, ZSM-5 does not increase butadiene yield with increasing octane (Table XII) fl2-14 ). Butadiene make can negatively impact and ultimately limit downstream alkylation capacity. Thus, G and G. products from ZSM-5 can produce more alkylate product at the same effective alkylation unit capacity. 

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