Biomedical Engineering Reference
In-Depth Information
Syngas inlet
Gas outlet
Slurry
bed
Wax
outlet
Steam
Wax
outlet
Cooling
water
Grid
Gas
Outlet
Syngas inlet
(A) Fixed-bed reactor
(C) Slurry-bed reactor
Gas
Outlet
Gas
Outlet
Catalyst
bed
Steam
Catalyst
Cooling
water
Grid
Standpipe
Valve
S
y
ngas
inlet
Syngas inlet
(D) Circulating fluidized-bed reactor
(B) Bubbling fluidized-bed reactor
FIGURE 11.6
Four main types of FTS reactors: (A) fixed-bed reactor, (B) bubbling fluidized-
bed reactor, (C) slurry-bed reactor, and (D) circulating fluidized-bed reactor.
For all FTS catalysts, an increase in operating temperature results in a
shift in selectivity toward lower carbon number products and to more hydro-
genated products.
11.4.3 Ammonia Synthesis
Ammonia (NH
3
) is an important chemical used for a large number of appli-
cations, including production of fertilizers, disinfectants, nitric acid, and
refrigerants. It is produced by passing hydrogen and nitrogen over a bed of
Search WWH ::
Custom Search