Selection of small industrial steam turbines
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Dear colleagues, I need some help~~ Let me first explain the situation: our company has a power plant on site that can supply steam. We are considering converting the compressors driven by electric motors into ones driven by steam turbines, with rated powers of 1560 Kw and 3675 Kw respectively. The current electricity price is 0.73 yuan per kilowatt-hour. The main goal is to save energy and achieve high return on investment. I just want to ask now, which type would be more suitable? Is it back pressure or multi-stage back pressure? Could manufacturers of steam turbines or experienced users share some insights? Thank you~~~
With a constant output power, it should depend on the quality of your steam. Because, from a thermodynamic standpoint alone, the higher the steam quality, the higher the efficiency of the turbine. I don’t quite understand.
I’m not sure; the steam data you can provide doesn’t allow me to give any advice
Two steam specifications: 3.43 Mpa, 390 degrees； 4.5Mpa, 435 degrees~~Please help~~ Hehe~~
If there is a large excess of steam generated on-site, it is recommended to consult SHENGU; SHENGU can provide small steam turbine units
I haven’t had any contact with Shaanxi Gear Drive, but I have been in touch with Shenyang Gear Drive. Based on my current experience, I am more inclined to choose the one from Hangzhou. Note: I am not affiliated with any of these three manufacturers, nor do I have any interests related to them: lol
The poster can ask Jarlett or Elliott’s representative to help choose a model.
This is a broad topic; I’ll keep following it.
The steam temperature of the poster is really high. Through what overheating
Our unit has chosen a turbine-driven centrifugal compressor (compressor flow rate； 44,000 Nm³/h pressure ； 3.43MPa temperature ； 410°. Highest ； Minimum power at 3.8 MPa and 435° exhaust: ‘0.75 MPa(a) ； 4150KW。 Multi-stage backpressure type.
This post was last edited by Zazaya on 2016-6-25 at 22:18. I did the calculations: to power that 3675 kW compressor using a condensing steam turbine with a steam pressure of 3.43 MPa, an output of around 18 t/h of steam is required. Without taking other factors into account, the cost per ton of steam must be less than 150 yuan in order for it to be more economical compared to using electricity. Gas isn’t that cheap these days, is it? If your factory has its own requirements for industrial steam and needs a lower steam pressure, a back-pressure turbine can be used as an alternative to the conventional temperature and pressure reduction valves in order to achieve energy savings. Feel free to contact me if you have any questions :)