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Have you ever encountered a stopped air compressor?

2009-02-27View Original

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Have you ever encountered a stopped air compressor? How does everyone handle it? I have experienced situations where the salination in the turbine of a compressor affected its performance, causing the compressor to stop working.
Reply #22009-02-27
Our facility doesn’t have steam turbines, but it’s quite common for the air compressors to stop operating and go into standby mode automatically. . . . Generally, this situation is easy to handle – just switch to the backup machine. . . You have turbines; it’s unlikely that they’re used alone – there should also be a motor to provide assistance. . . If it stops, then find out the reason. On our end, we can only reduce the volume while keeping a strong flame burning. . . If there is a backup machine, we recommend that you start it up to take over and carry out the work first. . . Haha. . . We can switch over once that big machine with the steam turbine is ready to operate. . . Ha. . . :lol
Reply #32009-02-27
I have been caught with the pressure compressor stopped; a few times it was due to deliberate maintenance, and once it was because of a turbine failure. I’m not sure if you’re asking about the processing of the entire device or that of the air compressor. Shut down the emergency stop compressor; first, use a flare to control the reaction pressure and the differential pressure between the two vessels. Reduce the flow rate and maintain a low load, stop feeding dry gas, disable the counterflow mechanism, and close the valve controlling the pressure of the rich gas leaving the compressor. Send the crude gasoline to the unqualified product stream or directly to the stabilizer. The main thing is to light the torch; generally, there are no major issues. This post was last edited by FloatHead on 2009-2-27 17:00]
Reply #42009-02-27
1. Control the pressure well in the reaction and reduce the feed rate appropriately. 2. Maintain pressure in the stabilization system; 3. The distillation system determines whether crude gasoline should be sent to the unqualified stream based on the level of V201. 4. Repair the steam compressor as soon as possible.
Reply #52009-02-27
Can’t crude gasoline still follow the normal process? Why does it have to go through the defective route?
Reply #62009-02-27
When a compressor stops operating due to a turbine failure, it can generally be handled as a normal shutdown; the cooling effect will lead to a decrease in flow rate, and the inlet should be connected to a flare system while repairs are carried out as promptly as possible
Reply #72009-02-27
Use the flare valve at the compressor inlet to control the pressure! Stabilize the system pressure! Heat-start the turbine!
Reply #82009-02-27
First, close the outlet valve and the backflow valve to prevent pressure reversal; then open the inlet valve to vent the pressure.:) :) :) :)
Reply #92009-02-27
Our equipment has experienced shutdowns; we quickly identified the cause, resolved it, and restarted the equipment to resume normal production.
Reply #102009-02-28
I encountered a situation where the compressor stopped on its own once. The compressor stopped suddenly, and I ran to the site along with the person on duty for the compressor. First, close the inlet and outlet valves as well as the air compressor pump. Brothers are encountering this kind of situation for the first time and lack experience, so they just watch the masters at work.
Reply #112009-02-28
We ran into it a few days ago. The reason we stopped the machine was that the main lubricating oil pump stopped operating for some reason, and the backup pump did not start automatically in time; as a result, the low lubricating oil pressure triggered a shutdown of the turbine. The solution is to follow the established procedures – there’s nothing complicated about it. Just make sure to coordinate well with the personnel in charge during startup to avoid any surge in air pressure !
Reply #122009-02-28
Stop the compressor in the catalytic unit; the reaction team should use a large flare to control the reaction pressure and reduce the processing volume. Stop the dry gas pre-boosting and gasoline reprocessing processes to maintain production. Identify the cause of the issue with the compressor and restart it as soon as possible to keep the pressure in the main system stable.
Reply #132009-02-28
There are two scenarios: 1) The compressor stops operating for unknown reasons; once this stoppage is confirmed, the operator on duty should promptly open the inlet valve of the compressor to divert the flow to the flare system, thereby releasing pressure from the settler. The operators who arrived at the scene later turned off the air compressor to engage the stabilizing hand valve, and checked to ensure that the reverse flow protection of the air compressor was activated; if not, it should also be turned off promptly, with the outlet of the air compressor slightly opened to vent the gas. 2): In the event of failures such as those in the main fan, it is necessary to shut down the air compressor system. If required by the reaction, the flare at the compressor inlet can be turned on in small amounts, but not too vigorously, to ensure that the compressor does not surge. If the reaction can be maintained, it is best to wait for the on-site operator to close the compressor inlet to engage the stabilizing check valve, open a little of the compressor outlet for venting, and after the compressor reaches its rated speed, then open the compressor inlet for venting.
Reply #142009-02-28
When I first arrived at the coking workshop, there were times when the pressure compressor stopped operating twice in a month; it was really scary. It seems easy to release the gas through a flare system, but it’s a shame to do so – after all, that gas represents money. So we tried our best to minimize the time required for releasing the gas via a flare. After the shutdown, the mechanical, electrical, and instrumentation maintenance teams rushed to the site at lightning speed. After investigations by various specialized teams, it was determined that the shutdown was caused by an abnormally high temperature of the bearing shells. Measurements taken with infrared thermometers at the site showed that the temperature did not exceed the alarm threshold, leading to the conclusion that it was a malfunction of the instruments. The process team was then contacted to restart the equipment, and the whole process took approximately 15 minutes.
Reply #152009-02-28
Use the inlet torch to control the pressure ahead; the compressor can handle it slowly, and it can be turned on once the process is completed. Posterior closed-loop circulation or static pressure retention.
Reply #162009-02-28
Here, our compressor is driven by only one turbine. Usually there are no problems, but it has stopped operating a few times due to fluctuations in steam pressure; in such cases, we have to divert the steam to the flare system first, then restart the turbine and reconnect the compressor to restore normal operation
Reply #172009-02-28
Common reasons for the shutdown of air compressors include switching the lubricating oil pump, switching the filter, and power fluctuations. Interlocks such as shaft vibration and excessive bearing shell temperature are generally removed (only alarms are retained). After the compressor stops, the cause of the shutdown should be identified immediately, and it should be restarted in a hot state as soon as possible after the issue is resolved. As for steam turbines, accidents caused by the steam system rarely result in shutdowns; even when the medium-pressure steam pressure is in the range of a dozen kilograms, it is still possible to keep the compressor running at low speed.

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