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Energy integration Process Flowsheets & Simulations

Explore 2 validated, solved Energy integration simulation flowsheets in MaximaLabs — real components: ethanol, water. Open any one directly in your browser.

Solved via: NRTL.

Solids
Water
solid
liquor
cake
filt
Dewater
wet
dry
vap
SSD
MVR
Superheat
Drysolid
Filtrate
Recirc Steam
Corn-ethanol biorefinery / distillers'-grains dryer, Blair, Nebraska, USA

Superheated-steam drying loop with MVR heat recovery

A wet cake is dried in a superheated-steam dryer (steam as the drying medium instead of hot air), and the evaporated moisture — pure steam — is recovered by mechanical vapor recompression (MVR) plus a trim superheater into high-grade superheated steam that reheats the recirculating drying medium. Superheated-steam drying is the energy-efficient route for biofuel and food solids (distillers' grains, beet pulp, lignite): because the drying atmosphere is steam, the evaporated water leaves as more steam whose latent heat is recompressed and reused, instead of being lost in a humid exhaust.

9 unit ops • NRTL

224 0

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BEER
feed
dist
btms
Qc
Qr
COL
Ethanol
Steam
feed
steam
conc
vapor
cond
EVAP
COMP
Syrup
Condensate
Recompressed Vapor
Corn-ethanol biorefinery, Nevada, Iowa, USA

Bio-ethanol: energy-integrated distillation + MVR stillage concentration

A dilute beer (10% ethanol) is concentrated toward the azeotrope in a beer column, and the water-rich stillage bottoms are concentrated in an evaporator whose vapor is recompressed by a mechanical-vapor-recompression (MVR) compressor — recovering the stillage vapor's latent heat as high-grade heating duty instead of venting it, the energy-integration route that eliminates a separate thermal oxidizer.

9 unit ops • NRTL

224 0

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