LIQUID
SOLVENT DRYER
Mellcon
Engineers are the manufacturers of complete range of
Liquid Dryer, Designed for removal of dissolved water from a variety of
liquids critical to Industry.These dryer are designed for a continuous
duty like Twin tower liquid dryer system or single tower liquid dryer system
for batch operation i.e. Desiccant systems for liquid dehydration have
two basic cycles:-
Drying- The removal of
dissolved water from liquids is accomplished by passage of the wet liquid
through a freshly reactivated packed column of granular desiccant material.
Continuous operation is accomplished by the use of dual adsorbers, with one
tower on the process stream while the other is being reactivated.
Reactivation-
Reactivation is accomplished in the following
steps:1. Drain the tower of liquid
product.
2. Heat the desiccant to
release water.
3. Remove released water from
the tower.
4. Cool and refill.
Before reactivating a tower,
the single volume of process liquid is emptied. Low volatility liquids
can be drained or pumped into a storage tank. many highly volatile liquids
(e.g., propane) can be pumped or pressurized (by heating) back into the
process line. Heating of the desiccant in the dryer is
accomplished with internal heaters (electric or steam or thermic fluid ) in conjunction with
the use of a dry non-reactive purge gas (like Nitrogen) and in the Convection dryer by
passing a hot gas stream through the bed. During reactivation the residual
process liquid and adsorbed water are vaporized as reactivation temperatures
are attained.
Mellcon liquid dryer are
offered in two basic designs, internal heat reactivation (IHR type) and
external heat reactivation (EHR or Convection type). Mellcon engineers evaluate each
application to determine the best system.
Reactivation system alternatives include
I.Type of Reactivation
System
II. Heat Source
a) Open (once
through)
a) Electric or
b) Closed (recirculated high or low
pressure)
b) Steam
c) Open Heating, Closed
Cooling
c) Thermic fluid
Mellcon applies 15 years of experience in adsorption
systems to the design of liquid dryers. Mellcon's engineers department is
capable of designing liquid dryers for many diverse applications.
A partial list of typical liquids dried by Mellcon
systems includes:
Aromatics- Benzene, Toluene, Xylene
Saturated Hydrocarbons- Propane, Butane, Pentane,
Hexane
Unsaturated Hydrocarbons- Butadiene, Butene,
Propylene-Propane Mixtures
Chlorinated Hydrocarbons- Methylene Chloride,
Trichloroethylene, Trichloroethane Refrigerants and Propellants-
Refrigerant 11, 12, 22,113, 114, 134, 404, 407
Miscellaneous Liquids- Ethanol, Vinyl Chloride,
Acetone, Terahydrofuran, Dimethylacetamide, Methyl-Ketone, Ethylene
Dichloride, Normal Paraffins, Kerosene
