Xuzhou Huayan Gas Equipment Co.,Ltd, exporting diaphragm
compressor, piston compressor, oxygen generator, gas cylinder and
nitrogen generators with good quality and low price.Piston
compressor is a kind of piston reciprocating motion to make gas
pressurization and gas delivery compressor mainly consists of
working chamber, transmission parts, body and auxiliary parts. The
working chamber is directly used to compress the gas, the piston is
driven by the piston rod in the cylinder for reciprocating motion,
the volume of the working chamber on both sides of the piston
changes in turn, the volume decreases on one side of the gas due to
the pressure increase through the valve discharge, the volume
increases on one side due to the reduction of air pressure through
the valve to absorb the gas.Compressor for unloading and
loadingProduct descriptionThis ZW series of oil-free compressors is
one of the first products produced by our factory in China. The
compressors have the advantage of low rotating speed, high
component strength, stable operation, long service life and
convenient maintenance. It is consist of compressor, gas-liquid
separator, filter, two-position four-way valve, safety valve, check
valve, explosion-proof motor and base etc. It has the
characteristics of small size, light weight, low noise, good
sealing, easy installation and easy operation. This compressor is
mainly used for unloading, loading, dumping, residual gas recovery
and residual liquid recovery of LPG/C4, propylene and liquid
ammonia. It is widely used in gas, chemical,energy and other
industries, and is a key equipment in gas, chemical, energy and
other industries. Note: In the process of unloading, the
compressor pressurizes the gas from the storage tank and then
presses it into the tanker through the gas phase line, and presses
the liquid from the tanker to the storage tank through the
pressure difference of the gas phase to complete the
unloading two process. When the gas phase is pressurized, the
temperature of the gas phase will rise. At this time, it is
not necessary to force it to cool, because if the gas phase is
compressed and then cooled, it is easy to liquefy, and the
pressure difference of the gas phase is difficult to
establish, which is not conducive to the replacement of the
gas phase and the liquid phase. In short, it will prolong the
unloading process time. If residual gas recovery is required,
during the residual gas recovery operation, a cooler can be
selected for forced cooling of the gas phase, so as to
recover the residual gas as soon as possible. The loading
process is the opposite of the unloading
process.Propane-Butane Mix CompressorNumberTypePower(kW)Dimension
(mm)Loading or unloading
(t/h) ZW-0.6/16-24111000×680×870~15 ZW-0.8/16-24151000×680×870~20 ZW-1.0/16-2418.51000×680×870~25 ZW-1.5/16-24301400×900×1180~36 ZW-2.0/16-24371400×900×1180~50 ZW-2.5/16-24451400×900×1180~60 ZW-3.0/16-24551600×1100×1250~74 ZW-4.0/16-24751600×1100×1250~98 VW-6.0/16-241322400×1700×1550~147Inlet
pressure:≤1.6MPaOutlet pressure: ≤2.4MPaMax differential pressure:
0.8MPaMaximum Instantaneous Pressure Ratio:≤4Cooling method: Air
coolingThe unloading volume is calculated according to the inlet
pressure of 1.6MPa, the outlet pressure of 2.4MPa, the inlet
temperature of 40 ºC , and the density of propylene liquid
of 614kg/m3. When the working conditions change, the unloading
volume will change accordingly, which is for reference
only. Piping and Instrumentation Diagram of gas unloading
Liquid deliveryAt the beginning, open the liquid phase
pipeline between the tanker and the storage tank. If the liquid
level in the tanker is higher than the storage tank, it will
automatically flow into the storage tank. When the balance is
reached, the flow will stop. If the liquid phase of the tanker is
lower than the storage tank, directly start the compressor, the
four-way valve is in the positive position, and the gas is
extracted from the storage tank by the compressor and then
discharged into the tanker. At this time, the pressure in the tank
car rises, the pressure in the storage tank drops, and the liquid
in the tank car flows into the storage tank. (as shown
below) Surplus liquid recoveryThe residual liquid recovery
process is the opposite of liquid transfer. After the liquid is
delivered, the four-way valve should be reversed, and the dotted
line in the figure is closed. At this time, the remaining gas in
the tanker is inhaled by the compressor, pressurized and then
discharged to the storage tank until the pressure of the remaining
gas drops to no recovery value. When recycling, pay attention that
the compressor pressure ratio and exhaust temperature cannot exceed
the allowable values.The working principle of the four-way
valve
Pull the handle of the four-way valve, when the
four-way valve is in the position shown in Figure a, the A side is
the intake air, and the gas flows from A to B, through the pipe,
the intake filter part, th
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