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Focused on the problem of low viability of Heat Integration (HI) scheme for complex system, a strategy and a method of hierarchical Heat Integration (HHI) were proposed in this paper. The practical limitations and energy target were combined stage by stage to determine the number of hierarchy and the optimal HI scheme in HHI method. The coproduction system, which can produce the syngas, semicoke and...
The low temperature coal pyrolysis technology and the atmospheric and vacuum tar distillation were combined to establish a low-rank coal based process system, which can co-produce semicoke, syngas and light oil. And then the simulation models of key units and whole system were also developed. As the calculation results, the lignite with 41.0% moisture can be converted to semicoke, syngas and light...
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