PRAXAIR (Shanghai) 1000 Nm3/h High Purity Nitrogen Generator
Main design reference:
<1000Nm3/h Nitrogen Generation Air Separation Plant Technical
Related enterprise standard of Praxair
Layout of Equipment:
Introduction of main equipments:
1. Fee air compressor: compress the mechanical impurities removed
air to process required pressure, and then send the air to
2. Molecular sieve purifier: adsorb the moisture, acetylene, carbon
dioxide and part hydrocarbon in the feed air to guarantee the
normal running of air separation plant.
3. Fractionating column: rectify the feed air to obtain needed
4. Instrument & electrical equipments: measuring and
controlling various parameters. All operations and emergency
cut-off can be achieved in center control room PLC. Important
parameters can be displayed, recorded and alarmed in the center
Equipment Installation Construction And Acceptance
1. The installation and construction for equipments should not only
follow the drawings delivered with equipments and the technical
documents provided by the equipment manufacturer, but also follow
the relevant standards, codes and regulations. The installation
should follow the requirements of process pipe and instrument flow
drawing, pipe layout drawing and pipe single line drawing.
2. Before the installation construction of equipments, the
equipments, valves, instruments, pipe fitting and materials
delivered with equipments should be checked, carry out the
construction only after they are qualifying after checking.
3. Before installing equipments, the longitudinal, horizontal and
elevation baselines should be marked on the foundation in the
drawing, and the baselines should meet the following requirements:
a) The center line deviation is within 20mm.
b) The dimension deviation is within 15mm.
c) Elevation: leaving the secondary grouting layer according to
d) Embedded anchor bolt hole center line deviation is within 5mm.
e) Bolt top elevation allowable deviation is within 5mm.
4. The foundation surface should be mended, spaded and pitted
surface before installing the equipment, leveling the place with
shim plate, clean the sundries in the reserved anchor bolt holes.
5. The anchor bolt and nut should be matched with moderate
tightness degree, and without defect.
6. The shim plate should be laid flat, and one group for the two
sides of each anchor bolt. The distance between the adjacent shim
plates is subject to the factors like rigidity of equipment
pedestal. The shim plate should be welded after calibrating the
equipment, the secondary grouting layer on the foundation surface
must closely contact the equipment pedestal annular space and
7. The installation construction and acceptance inspection for air
compressor should be according to the installation technical
requirements provided by the manufacturer and the regulations of
8. The installation construction and acceptance inspection for
cryogenic liquid storage tank and cryogenic liquid pump should be
according to the installation technical requirements provided by
1. Our company is a state-owned enterprise that can give
professional consult, design, supervision, project management,
import and export trade, forming a complete set for air separation
plant, and engineering project contracting (EPC).
2. Our company can provide the engineering design and installation
service, and technical services and after-sale equipment
3. Mature project engineering supervision