Heat-balance design in coker reduces energy consumption

The coker's main fractionator at Jinling Petrochemical Corp.'s Nanjing, China, refinery separates the overhead from the coke drums into product and recycle streams. The recycle streams help maintain the heat balance of the process unit.Click here to enlarge imageA heat-balance design associated with the revamp of a delayed coker in the Nanjing, China, refinery saves about $101,000/year in energy consumption. In 1999, Jinling Petrochemical Corp. developed a new heat-balance pumparound design for the main column of the delayed coker in its Nanjing refinery. This was part of the project that expanded the capacity of the delayed coking unit from 1.0 million tonnes/year (tpy) to 1.2 ...

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