METHOD FOR IMPROVING THE HOMOGENIZATION OF THE TEMPERATURES IN A STEAM METHANE REFORMER BY ADJUSTING THE POWER DISTRIBUTION

摘要

A method of improving an endothermic process in a furnace containing reforming tubes positioned vertically in rows inside the furnace, with rows of inner burners placed between two rows of tubes and rows of outer burners placed between a row of tubes and a side wall parallel to the rows of tubes, where the method improves the homogenization of the temperatures of the tubes by throttling part of the burners, the method comprises the steps a) optionally calibrating the simplified physical model of step c3) by measuring one or more real tube temperature for at least a tube impacted by the throttling of a burner in standard and in throttled state, b) acquiring information on a real tube temperature for the tubes present in the furnace with all the burners present in the furnace under standard non-throttled conditions, c) getting a map of burners to throttle including c1) choosing at least one parameter representative of the performances of the furnace with a target of improvement, c2) choosing at least one or more power ratio for the burner throttling, c3) utilizing the information of step b) and a simplified physical model of the impact of throttling a burner on the tube temperature, c4) getting a map of burners to throttle, step d) throttling the burners.