Algas SDI Direct Fired F6-ASME, Руководство по эксплуатации и техническому обслуживанию

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Operation
Algas-SDI Operation and Maintenance Manual – P/N – 54000 8
The liquid pressure to the inlet of the vaporizer must be a minimum of 6PSI
higher than desired discharge pressure. If tank pressure cannot meet this
requirement, install a pump in the liquid line under the storage tank to maintain
the minimum pressure.
ECONOMY INSTALLATION (OPTIONAL)
A vaporizer with economy operation draws vapor from tank as primary source
and utilizes the vaporizer only when needed. The intent is to allow the most
economical operation and eliminate energy waste. To accomplish this, install an
Algas-SDI 160H through 800H vaporizer, operating on demand, combined with a
primary vapor bypass. To do this you will need an economy kit that consists of
several valves and regulators.
Figure 4 – Economy Option
After installing the vaporizer, install and set the regulators from the economy kit as follows:
1. Install the (1) Primary Vapor Regulator in the vapor line at the tank and set at 10 psig. The
regulator must be installed so that any gas condensing between the regulator and the tank
can run back into the tank.
2. Install the (3) Vaporizer Regulator at the outlet of the vaporizer and set at 13 psig or
approximately 3 psig higher than the (1) Primary Vapor Regulator.
3. Between the (3) Vaporizer Regulator and the vaporizer outlet install the (2) Economy
Regulator in reverse direction such that the outlet side of the regulator faces the vaporizer.
This regulator should be set at 30 psig or just high enough to allow enough pressure in the
tank to supply the full flow through the (3) Vaporizer Regulator when needed.
CONTAMINANT SEPARATOR – FILTAIRE (OPTIONAL)
The
FILTAIRE
is a filtering device designed to trap heavy hydrocarbons
commonly present in LPG gas vapor. It also traps other materials, which may be
in the gas due to storage conditions and internal condition of the equipment.
Impurities are collected in the system and periodically removed through the
system blow down drain. Residual heavy end hydrocarbons with boiling points
higher than pure LPG are trapped by the filter and fall to the bottom for removal.
HEAVY ENDS DRAIN