Bituminous coal process flow diagram

Bituminous coal process flow diagram and resultant synthetic fuels, 382-383f... 

Thermodynamic analyses have been conducted for the various process steps in the H-Coal process system for producing synthetic fuels from bituminous coal. A Structured Process Energy-Exergy-flow Diagram (SPEED) for the H-Coal process is presented, which depicts the transformation of energy and exergy among the processes and the hierarchical structure of the process system with a compact format of the SPEED. 

Although SRC-II was basically a thermal liquefaction process, it was most successful using bituminous coals with a high native pyrite content. Iron sulfides are well known to have catalytic properties for coal liquefaction. Recycling part of the ash-minerals-containing bottoms had two beneficial effects (1) it increased the pyrite concentration in the reactor feed, and (2) it increased the residence time for heavy components, thus giving them more time to hydrocrack to distillate products. A block flow diagram of the SRC-II process is shown in Fig. 19.19. 

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