Which manufacturers use turbines for urea carbon dioxide compressors?
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I recently encountered some problems while reviewing materials, so I’ve come to ask the experts for their advice. Which manufacturers use steam turbines to drive urea carbon dioxide compressors? In my data, it is a multi-stage extraction condensing steam turbine, with an inlet steam pressure of 40 kilograms, an extraction steam pressure of 26 kilograms, and a make-up steam pressure of 4 kilograms. What is the purpose of using 4 kilograms of make-up steam?
Let a pseudo-expert answer: The function of replenishing steam is as follows: This steam consists of the low-pressure steam remaining in the urea plant, and it is used in the low-pressure section of the turbine to generate power, thereby reducing steam consumption.
There’s no other way; the low-pressure steam generated as a by-product of urea production can’t be used all of it, and it would be a waste if it’s discarded. By injecting it back, the cylinder can continue to do work, thus saving steam
For units with high production capacity, such as those with a CO2 flow rate of 27,000 M3/H or more, it is more economical to use a turbine to drive a centrifugal compressor; whereas units with lower production capacity tend to use reciprocating compressors.