What to do if the heat source at the bottom of the stabilizer is interrupted?

To ensure that the gasoline vapor is of acceptable quality and free of liquefied gas components, it is recommended to divert the crude gasoline out of the stabilization system; the plant should operate at reduced capacity, the rich gas compressor should continue to run, and the compressed gas should still be fed into the stabilization system, with the pressure in that system being carefully controlled.

With a short-term interruption of the heat source, the raw gas and compressed rich gas continue to flow into the absorption system. In the event of a prolonged interruption, the crude steam is switched to refined steam, and the compressor outlet is vented to a flare. Ensure that the pressures in the absorption tower, desorption tower, and stabilization tower remain at least 0.6 MPa; maintain normal liquid levels in each tower. Reduce or even discontinue the reflux at the middle section of the absorption tower as well as the reflux at the top of the stabilization tower, and decrease the amount of absorbent oil supplied to the absorption tower. A three-tower cycle can be established.

When the temperature at the bottom of the stabilizer is below 150 degrees, stabilized gasoline must not be sent out of the plant; I’m not sure what the requirements are in other plants I have seen accidents where the interruption of a stable heat source led to liquid hydrocarbons entering the vapor stabilization zone, causing vibrations due to the strain on the gasoline tank straps.

1. The crude gasoline can be directly sent for refining for now... Arrange to repair the pump as soon as possible. 2. The crude gasoline can also be fed into the stabilizer tower first, where it can be cooled further before being sent for refining. 3. Although there is no heat source at the bottom of the stabilizer tower, there is still a function of equilibrium flashing; in this case, pressure reduction (around 6 KG generally) can be applied to allow the LPG to escape in vapor form under pressure. As long as the pressure can be balanced with that of the spherical tank, the LPG can be delivered by its own pressure... Anyone can decide on how to handle this. 4. Unless there are plans for shutdown or other abnormal situations, it is not recommended to use the compressor to release pressure... As long as we can hold on a little longer, we just need to wait until the pump is repaired and production can resume. 5. When receiving crude gasoline into the finished gasoline tanks, the dispatch department can arrange to transfer it to another tank; if the amount is small, it can be gradually transferred into the finished tanks through blending methods. :lol

With a short-term interruption of the heat source, the raw gas and compressed rich gas continue to flow into the absorption system. In the event of a prolonged interruption, the crude steam is switched to refined steam, and the compressor outlet is vented to a flare. Ensure that the pressures in the absorption tower, desorption tower, and stabilization tower remain at least 0.6 MPa; maintain normal liquid levels in each tower. Reduce or even discontinue the reflux at the middle section of the absorption tower as well as the reflux at the top of the stabilization tower, and decrease the amount of absorbent oil supplied to the absorption tower. A three-tower cycle can be established.

I agree with the views from the 3rd and 6th floors.

Shut down: For a short period of time, discharge the deethanized gasoline and cut off the stabilization process

What caused the interruption of the heat source at the bottom of the stabilizer?

1. Carry out emergency treatment. 2. If recovery is not possible after a long time, switch to discharging the excess steam and then take further action. 3. If nothing else works, shut down the operation