The reactor has its feed cut off; how should the distillation system handle this?
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The reactor has its feed cut off – how should the distillation system handle this? Beginner here, please give some advice. Thank you
Enter a loop to wait for refeeding. If production stops completely, then return the oil!
In the reactor, along with the steam being lifted, doesn’t all the stripping steam go into the distillation tower? No impact?
After feeding the reaction mixture for distillation, the following steps are carried out: 1. Use T2201 as a top-cooling reflux to keep the temperature at the top of T2201 at ≤120°C, in order to prevent column flooding. 2. Improvement of V-201. 3. Stop the top circulation return pump and the intermediate-stage pump depending on the temperature conditions in each section of T2201. 4. Based on the diesel color, determine whether to switch to the substandard grade for light diesel; at the same time, control the level of V2203 carefully to prevent the liquid level from rising too high ； When the liquid level in the oil sealing tank is low, contact the tank farm to receive diesel in order to maintain the liquid level in V2204, and enhance dehydration. Ensure the normal circulation of seal oil and the supply of combustion oil to the reaction regenerator. 5. Control the level and interface of V2203; direct the acidic water out of the unit and close the destabilization manual valve. 6. Control the liquid level in the raw oil tank to ensure normal circulation of the raw oil; when the liquid level in the raw oil pipeline is high, contact the sludge pump in the oil storage area. 7. When the bottom temperature of T-201 is 250°C, stop T-201 and the stripping steam for T-202. In 8 cases of burning oil pump circulation reactions, it is necessary to be able to spray burning oil promptly.
How to handle the distillation system? Use reflux.
Cold reflux is used to control the top temperature of the distillation tower; the crude gasoline is not sent to the stabilizer. Water removal is enhanced in the top reflux tank, and the diesel is transferred to a tank designated for unqualified products. It is instructed that the stabilizer be adjusted to operate in a three-tank cycle, while the feed oil is routed through the slurry line for an open-loop cycle (it can also be integrated into the main circulation system in the tank area). The fuel oil tanks are dehydrated