New ideas for energy savings – Creative insights on \"The benefits of changing the frequency of the pumps in the middle section of a coking distillation tower\"
Thread Content
Advantages of using frequency converters for adjustment in coking distillation towers: Since it is necessary to switch between towers for operation in the coking plant, the distillation process also requires periodic adjustments. The current coking cuttower cycle in our plant is 24 hours, which is quite frequent; the reflux volume at the middle section of the distillation tower must be adjusted on a daily basis. This volume is difficult to control, as even slight adjustments in the operation of the control valves result in significant changes in the reflux volume. There are two main advantages to changing this frequency: 1) It improves operating conditions, making them more convenient and accurate; it eliminates the need for manual operation of the valves at the outlet of the middle-section pump, and it also allows for better control of the amount of reflux, which is beneficial for the distillation process ； 2. After changing the frequency of the intermediate-stage pump, a significant amount of electricity can be saved; specific figures still need to be calculated.
Energy saving, labor savings~~~~
A good application example. Currently, many pumps in refineries are variable-frequency pumps. The power-saving effect is significant. :lol
Pump motors consume a lot of electricity; moreover, variable frequency technology makes it easy to save money
When a variable-frequency pump encounters power fluctuations, it is necessary to switch off the variable frequency mode and use the fixed-frequency mode instead. There are examples to prove it: variable frequency technology is used in the top and middle sections, at 380v. For a while, the power grid experienced significant fluctuations, with frequent voltage drops; this affected the variable-frequency pumps and led to minor disruptions in production. They simply switched to power frequency later on.
When we installed the equipment in 2007, the design institute designed it with variable frequency functionality
Our inverter also keeps shutting down during power fluctuations
It’s much better than ours; we all changed it later on. However, all new installations are equipped with variable-frequency pumps.
So far, the middle-stage pump has not been modified; only the radial feed pump has been changed