Arrangement of bottom reboiler of gas separation unit
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For a large-scale gas separation unit of over 500,000 tons, more than two reboilers are required at the bottom of the propylene tower. How many reboilers are there?
According to the available heat sources, it is more appropriate to set it to 4 units. If space permits, it can also be set to 8 units for hot water heating, various heat media of about 100 degrees in the process system, and steam condensate water heating. . . . . Everything is possible
Ours is a 600,000-ton gas separation plant with four reboilers at the bottom of the tower.
I have seen two units installed, one on each side of the tower. I think it is more appropriate.
What I have here is a compressor, and I am adding a reboiler for startup.
Ours is 600,000 tons of gas separation. There are four reboilers at the bottom of the tower, two large and two small. It depends on the heating medium.
We have two reboilers, one for steam and one for heat medium water. On both sides of the tower,
Our gas separation is 720,000 tons, and the propylene is designed for 800,000 tons. It is designed with two towers connected in parallel, and then connected in series to the third tower. Each of the two towers has a hot water reboiler. The hot water temperature is 98 to 100. The hot water flow rate of a single hot water reboiler is 500 tons/hour. I forgot the parameters of the reboiler, but I remember that the weight is 50 tons.
This is because the selection should be calculated based on the heat source. If the number is large, the investment cost will increase!
The most energy-saving thing is to apply a heat pump system! It not only saves energy but also reduces the operating pressure and theoretical tray number of the propylene tower! ! ! I know that many manufacturers in China use heat pumps.