Steam injection into furnace tubes
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What determines the steam injection volume into the furnace tube? If it’s based on flow rate, how is the flow rate determined, and what flow rate is necessary to prevent coking? What about the impact of the steam injection volume on the furnace outlet temperature? I would like to ask the teachers to explain it to me. Thank you
What determines the steam injection volume into the furnace tube? If it’s based on flow rate, how is the flow rate determined, and what flow rate is necessary to prevent coking? What about the impact of the steam injection volume on the furnace outlet temperature? 1. The amount of air to be injected is determined, first, based on the design specifications of your facility; second, based on the processing load of that facility; and third, based on the convection, radiation in the heating furnace, and the pressure at the furnace outlet ； 2. The flow rate is calculated based on the length of the furnace tube, the feed pressure, and the outlet pressure. The flow rate helps to prevent coking; the key factors are the length of the furnace tube and the residence time ； 3. The amount of steam injected is primarily intended to maintain a certain flow rate and reduce the residence time of the crude oil within the furnace tubes; more steam results in a lower temperature, and vice versa.