Coking in Coal Liquefaction Process Equipment: A Preliminary Data Correlation

摘要

Operational data from the Wilsonville SRC-I pilot plant fired preheater and a simple model of the coking process have been used to develop a preliminary, incipient coking correlation in terms of processing parameters, including the inlet hydrogen partial pressure, coal fraction in the slurry, a solvent quality index, coil outer surface temperature, and an estimated slurry contact time. Regression analysis shows, in agreement with qualitative statements in the literature, that coal properties including nitrogen, sulfur, oxygen, and vitrinite contents also contribute significantly to the correlation. However, additional operational data and more complete coal analyses are required in order to provide a broader foundation for further development of correlations of the proposed type. 14 refs. (ERA citation 10:038625)