Number: 33


  • Process burner spacing


    Burner-to-burner interaction can increase NOx emissions and cause flame impingement on process tubes

  • Ethylene furnace heat flux correlations


    Equations are presented that correlate and predict heat flux as a function of operating, burner and furnace parameters for all major ethylene-cracking ...

  • Override control of fuel gas


    When natural gas was to be added to a refinery’s fuel gas system, detailed dynamic simulation of the new system ensured stable operation and a shorter ...

  • Identifying contributors to flaring


    Applying an integrated flare and fuel gas monitoring system to identify and eliminate major contributors to refinery flaring.

  • Burner retrofit increases capacity and cuts costs


    Replacement burners in a hydrogen reactor feed heater saved the cost of retrofit within a week.

  • To flare or not


    What do you do with the gas associated with crude oil production if there is no local processing capacity and no gas gathering network to collect and deliver ...

  • When excess air becomes too much


    Excessive use of excess air impacts operating costs through fuel efficiency, furnace reliability, and stack emissions

  • Dynamics of operation for flare systems


    Detailed studies of problems with flaring performance led a refinery to define and implement a scheme for optimum flare performance

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