If the feed with a higher temperature is interrupted along the way, which parameters of the unit will change? How to adjust it?
Thread Content
Wax oil hydrogenation unit, 7 feed streams. 4 channels for direct supply of hot material, 3 channels for cold feed from the tank area. For critical equipment, raw materials, and diesel intermediate heat exchangers, there are two sets of high-pressure heat exchangers that exchange heat with the reaction products before entering the reactor.
With reduced hot feed but unchanged total feed, the heat exchange load increases; the feed temperature may drop, so it is necessary for the heating furnace to increase its capacity in order to raise the temperature
1. When the temperature difference across the heat exchanger changes significantly, it is essential to increase inspections of the heat exchanger, as there is a possibility of leakage! Paraffin oil is fine, but if high-temperature residue oil leaks, it will catch fire! 2. For the heat exchangers for raw materials and reaction products, it is necessary to adjust the flow path of the raw materials through the heat exchanger in order to maintain a stable inlet temperature for the hot gases; this will result in a lower inlet temperature for the furnace. 3. Pay attention to the heating furnace; ensure the temperature at the reactor inlet. The furnace will consume more gas, so monitor its oxygen level. Some devices have interlocks for oxygen content! If the pressure behind the gas flow control valve of the main burner is high, it is necessary to consider adding more burners.