HYSYS再沸器模拟

1、For the distillation column and the reboiled absorber, the following predefi ned reboiler pre-c on figurati ons (below) are available on page 2 of the column configuration wizard. Depending on the configuration you can specify a HYSYS Reboiler, a Heater, or a heat exchanger model as the reboiler typ

2、e.Thermosiph on reboilers can now be simulated rigorously using Aspe n Shell& Tube Exchanger (formerly Tasc+). Using this operation as the reboiler you can select differenttypes of EDR-Shell and Tube heat exchangers suchas thermosiph on, kettle, and forced circulati on.The heat excha nger is in tegr

3、ated with the colu mn so that rigorous calculations can be done in both the column and the reboiler. The heat excha nger is treated as part of the colu mn and both the colu mn and the heat excha nger are solved simulta neously.Whenthe selections are complete moveto the next page to specify top and l

4、ast stage pressures.Notes: For a thermosiph on reboiler,both fixed-flow and fin d-flowopti onsare impleme nted.* Some specs related to the EDR-Shell and Tube heat excha nger are automatically defi ned to mini mize user in put.* A damp ing factor is added for EDR-Shell and Tube heat excha ngers in si

5、de the colu mn sub-flowsheet to improve the conv erge nee of the solver.Each con figurati onis show n both as an approximati on of the way it mightbe arranged in an actual column and in detail showing howit is represented using heat excha ngers, flash drums, mixers, and splitters. In these diagrams,

6、 NT represe nts the nu mber of trays (stages)Reboiler Once-throughThis configurationis available whenusing the kettle reboiler. The liquidcoming from the stage above the reboiler passes through the reboiler once and is returned to the bottom of the column as a mixture of liquid (which goes into the

7、sump, to be draw n as bottom product) and vapor (which goes up to the stage above).MT- 1Reboiler Circulation without baffleThe liquid coming from the stage above the reboiler enters the sump, from which the bottoms and the reboiler feed are both drawn (with the same composition). The reboiler produc

8、t is returned above the sump. Vapor may also be produced whe n the hot liquid return from the reboiler con tacts the liquid in the sump.WT - 1Reboiler Circulation with baffleThe sump is divided in to two secti ons with differe nt compositi ons. The liquid from above the reboiler en ters one sect ion, from which the reboiler feed is drawn. The reboiler liquid product enters the other section, from which the bottoms stream is draw n.Excess reboiler liquid return (above the flow rate of the bottoms stream) overflow