I am not exactly familiar with your generator but may have some useable info. We use a vapor extractor on our lube oil tank which pulls(keeps) a slight negative pressure (vacuum)on the tank. This makes it so return lube oil cannot build up enough pressure to enter the air chambers. Any loose...
Just a couple things to ponder. Could the turbine be operating at or near its critical speed. We have a multistage unit that has 2 critical speeds 1 at about 2120 and another at almost 3000 rpm. It shakes like crazy at these speeds but settles out well above or below these speeds. It is not...
I would worry more about other erection mistakes, if this one was made , what else. Boiler water wall tube coming in contact with incoming secondary air should be no problem functionally. But you stated air gas path which I assume is in the flue gas exit pass, which could cause a problem. If it...
Depending on what size unit you want probably not much. As an operator of a vintage first generation pyropower (now Foster wheeler)CFB built in 1989 twin boilers, a lot has changed since then. Some now have intrex loop seal heat exchangers, and others have plates in stead of hot cyclones and...
A hogging ejector is a steam turbine ejector that evacuates air and creates a vacuum on a condenser. Their are vacuum ejectors that pull vacuum and help a thermal turbine unit work. A hogging ejector is a larger than normal ejector used when starting up and during heavy loads. Usually they are a...
I am definitely not an expert on turbines but I have experience. We operate a turbine with 3 boilers in parallel. 2 of them operate at 400kpph of flow @950* f while the other operates at 600kpph of flow @865*f. Our normal turbine inlet temps is around 905 to 915*f. However if the bigger unit...
A gas tight flap would be a check valve non return on the extraction. This is because if there is a turbine or extraction trip(shutdown) then you don't want water or steam to enter the turbine in this way. Many turbines have a bypass which takes an amount of steam and bypasses it directly to the...
Yes HRSG Heat Recovery Steam Generator is the term. I agree a boiler is a fired vessel. In a paper mill(where I work) we have a Kraft Recovery Boiler which is a fired vessel of special design.
I would like to know how you take Ph of superheated steam. You may be taking a sample of steam, condensing it then taking ph of the liquid condensate. Normally a ph value is present in the steam drum of the saturated steam. Volatile chemicals are added to the boiler water before it boils, these...
Vacuum is also directly proportional to temperature in the back end of the turbine and the condenser and may also be related to hot well level. more info is need for sure. We also have a 110 Mw steam turbine unit and condensate, it operates better with 1 vacuum pump than with 2. When the second...
Sounds like you have what you need, if the Hx is rated for SH steam. You should have a pressure relief valve on the inlet or shell side to prevent over pressure, that part is true. automatic air vent is not needed. upon initial start up you will need to bleed or drain out any excess air from...
I will try to answer to the best of my ability. I am familiar with cfb's and co firing coal and petcoke.
A lot of CFB operation is difficult to understand. First of all your fuel mix looks about right, you don't want any more petcoke to coal ratio than what you have. Yes the amount of bed is...
