High Purity 99.6% LN2 Air Separation Plant For Industrial 645KW

Design point of Atmosphere

Ø  Atmosphere pressure

101.3kPa(A)

Ø  Atmosphere tempt.

30℃

Ø  Relative humidity

75%

Ø  O2 contained in the air

20.95%O₂

Air Tempt.

Ø  Annual average tempt.

18.4℃

Ø  Max. Tempt.

40℃

Ø  Max. Tempt.

-1.8℃

Ø  Average temp. in the summer

30℃

Ø  Average temp. in the winter

7.5℃

Ø  Earthquake intensity:

＜6 degree

Ø  Altitude:

50m

Impurity in the raw air:

Ø  CO₂

≤350 ppm

Ø  SO₂

≤0.44 mg/m³

Ø  H₂S

≤2.3 mg/m³

Ø  CH₄

≤5.2mg/m³

Ø  C₂H₂

≤0.03 ppm

Ø  CnHm(exceptC₂H₂)

≤5 ppm

Ø  Dust content

≤10mg/m³

Ø  Recular water

Ø  Inlet tempt.

30℃

Ø  Inlet pressure

0.4 MPa(G)

Ø  Max pressure drop

0.2 MPa(G)

Ø  Max tempt. rising

10℃

Ø  Turbidity of cooling water

12 mg/L

Ø  PH value

7.2

Ø  Rigidity

2.5

Ø  Fouling factor

0.0004 m² hºC/ K.W

Ø  Water consumption

～52T/h

Ø  Power condition

Ø  HV

10,000V±5% 3 phases and 3 ways

Ø  LV

380V/220V±5% AC, 3 phases and 4 ways

Ø  Frequency

50±0.5HZ

Ø  Installed capacity

～645KW(indicated on nameplate)

Putiry anc capcity (out of cold box)

Medium

capacity(L/h)

purity

PRESSURE(MpaG)

LN2

600±5%

≤10 ppm O₂

~0.18

Production condition(0℃,101.325Kpa)same as below

Ø  Plant running period

• >2 years

Ø  Heating and defrosting time

• ～36hrs

Ø  Starting time (from start the turbine expansion toget the production)

• ～16hrs

1. Raw material filter

1 set

Technical parameter(note:determined by final design)

Manufacturer

Wuxi

Type

Self cleaning

Process capacity

～10,000m³/h

Filter efficiency

≥99.8 %

Filter resistance

≤0.65KPa

Installation type

vertical

Filter material

foliage fibre

SCOPE OF SUPPLY(note:determined as manufacturer’s final list)

QUANTITY

Ø  FILTER HOST BODAY

1

Ø  Counter blowing and control system

1

Ø  Filter bucket

1

Ø  Spare parts

1

Image (for reference, determined by final design)

1. centrifugal oil free air compressor

1 set

Technical parameter(note:determined by final design)

Manufacturer

Atlas or Ingersoll

Medium

Air

cooling water inlet temp.

≤30 ℃

cooling water inlet pressure.

0.4 Mpa

Discharge capacity

～4900m³/h

Discharge pressure

～1.1MPa(A)

Compressing stage

3

Motor power

525KW

Shaft power

489KW

Cooling water consumption

32m³/h

Discharge tempt.

≤40 ℃

Discharge oil content

100% oil free

Regulation scope

70 %～100 %

SCOPE OF SUPPLY(note:determined as manufacturer’s final list)

QUANTITY

• Compressor body

1

• Pedestal and anchor bolt

1

• Main motor

1

• Coupling and cover

1

Complete lub. system(incl:oil pump,heater ,auxiliary oil pump,filter,cooler,oil smoke discharger,bottom plate and anchor bolts, etc.)

1

• air, oil, gas pipeline and accessories in the system

1

• Gas cooler

1

• Return flow valves, vent valves, outlet valves

1

• Venting silencer

1

• Corrugated pipes expansion joint on inlet and outlet pipes

1

• Anti tremble system

1

• Primary element,local instrument and necessary connector and root valves.

1

• Primary instrument to transformer for shaft vibration, shaft displacement

1

• Local instrument control panel

1

• Spare parts and special tool

1

• Corrugated pipes expansion joint on inlet and outlet pipes

1

Image (for reference, determined by final design)

1. Air precooling system

1 set

Technical parameter(note:determined by final design)

Manufactory

siad

Model

GAYL-4900/10

Process air

～4900m³/h

Air inlet working pressure

～1.1MPa(A)

Air inlet tempt.

≤40℃

Air outlet tempt.

～8℃

Motor power

～30KW

Cooling water inlet pressure

0.4MPa

Cooling water inlet tempt.

≤30℃

Cooling water consumption

～20t/h

Scope of supply(based on final design)

Q.T.

Ø  imported compressor

1

Ø  condenser

1

Ø  evaporator

1

Ø  pipes and valves

1

Ø  refrigerating self control element

1

Ø  computer control panel

1

Ø  operation panel

1

Ø  water separator

1

Ø  automatic drainer

1

Image (for reference, determined by final design)

1. MS purification system

1 set

Technical parameter(note:determined by final design)

Manufactory

siad

Model

HXK-4900/10

Air process

～4900 Nm³/h

Inlet pressure

～1.1MPa(A)

Air inlet tempt.

10 ℃

Air outlet tempt.

17 ℃

M.S. regeneration tempt.

～165℃

Working time

8hrs

Electric heater power

～90KW

Average power

～25KW

Scope of supply

Q.T.

Ø  MS absorber

2

Ø  Filter

1

Ø  Electric heater

1

Ø  Auto switch valve

1

Image (for reference, determined by final design)

1. Distillation column

1 set

Technical parameter(note:determined by final design)

Manufactory

siad

Model

FN-600Y

Type

Single column rectification

Size

～2200×3000×18000mm

Scope of supply

Q.T.

Ø  Main heat exchanger

1

Ø  Nitrogen column

1

Ø  Main condenser evaporator

1

Ø  Cooler

1

Ø  Valves in pipes in cold box

1

Ø  Cold valve

1

Ø  cold box bucket shell

1

Ø  Platform, ladder

1

Image (for reference, determined by final design)

1. boosting expansion turbine

1 set

Technical parameter(note:determined by final design)

Manufacturer

Sichuan

Medium

Air

Expansion capacity

～3400Nm³/h

Inlet pressure of expansion turbine

～1.3Mpa(A)

Outlet pressure of expansion turbine

～0.13Mpa(A)

Inlet tempt. of expansion turbine

～145K

Boosting capacity

～3400 Nm³/h

Inlet pressure of booster

～1.05MPa(A)

Inlet tempt. of booster

287K

Scope of supply (note:determined as manufacturer’s final list)

Q.T.

Ø  Expansion turbine body

1

Ø  Booster(assembly with main machine)

1

Ø  Oil supply

1

Ø  Filter

1

Ø  Air cooler

1

Ø  Bottom plate

1

Ø  Emergency shut valve and spray mouth adjusting mechanism

1

Ø  Special tool

1

Ø  SPARE PARTS

1

Ø  Rotating speed meter and detective and joint

1

Image (for reference, determined by final design)

1. Liquid storage system(covered by buyer)

1 set

Manufacturer

siad

Scope of supply:

Specification

Q.T.

N2 tank

Vertical,Perlite insulation

1

Efficient volume  100 m³

Design pressure  0.8MPa(G)

LN2 truck filling pump(imported)

centrifugal

1

Delivery flow rate  18 m³/h

Working pressure  0.6 MPa(G)

Image (for reference, determined by final design)

Design principle

1. It should be able to control and supervise the whole process of the air separation plant to ensure the long stable roperation and easy maintenance.
2. It is of central control room(DCS) with local control panel and field control to ensure the reliability and advance.

There are 2 screen operation tables. It has supervision, display, or operation, adjusting,         memory start interlock and protecting function.

1. there is a printer in central control room recoording main parameters in the whole process of production and operation of the workers and system fault if it is over limitation separately.

Online analyzing room is provided in instrument pane Online analyzing technological data enters DCS system to display , recording, warning, etc.

There is a emergent shut down buttom for emergency

Ø  power: 220VAC and 24VDC.

Ø  DCS system is supplied by UPS, and others is supplied by panel.

Instrument selection

DCS system

Zhejiang Zhong Kong.

UPS

Santak.

On line analyzing instrument

complete (electric and gas line will be within terminal and standard gas and pretreatment device provided).

Regulating valves

Zhejiang or simular products

Butterfly valve of M.S. purifier

USA Bray

Pressure, pressure difference transformer and flow transmitter

HUA DA NUO OR ZHONG YANG

2 positions 3 ways and 2 positions 5 ways solenoid valves

SMC,PARKER or similar brand

Local flow meter

EJA or similar brand

Air flow measuring element

SMC,PARKERor similar brand

Temp. measuring

glass rotor flow meter,

Local and field panel indication

orifice

Local tempt, indication

Pt100 with graduation and resistance within cold box is of double platinum resistance temperature sensor.

Scope of supply (note:determined as manufacturer’s final list)

quantity

Ø  DCS(Distributed Control System)

1

19” collor LCD operating desk

2

Printer

1

Control station (incl. all kind of  I/O card)

1

Terminal board and communication cable

1

System software(incl. technical paper)

1

Ø  Main instrument

UPS un-interrupted power supply(6KVA,3MINS battery)

1

Pressure and pressure differential transformer

33

All kinds of ragulating valve

8

Switch over butterfly valves

10

Pt resistance

23

Orifice plate

6

Ø  Analyzer instrument

double metal tempt. meter, pressure gauge, joint. Etc.

1

Ø  Instrument panel

DCS panel

1

Online analyzer panel

1

(all with wire and pipes.Outside purchased will be with that panel.)

Ø  Analyzer instrument(incl. panel and pretreatment device and standard gas, etc.)

Q.T.

CO₂ analyzer(0~10ppmCO₂)

1

Pure O₂(0~10ppmO₂)

1

Trace moisture analyzer(0~100ppmH₂O)

1

Image (for reference, determined by final design)

Design principle

It must be fit for reliable, easy operation and process requirement.

Motor control ,  protection  and measuring  must be in accordance with China relative standards.

1 way incoming cable for high voltage

HV motor uses liquid soft starter. Busbar voltage will not less than 85% of it.

HV system control is protected by computer comprehensive protection measuring control device.

There is local panel for motor with necessary electric meters and signal and operation element.

LV power resource has two incoming lines, among which one is as S/B.

When LV motor start, LV busbar voltage drop will not be lower than 15％.

Ø  MS heater tempt, is regulated by closed-loop power regulation.

Power supply by buyer

Power type

Power type

Power type

HV

HV

HV

LV

LV

LV

DC control power resource

DC control power resource

DC control power resource

Buy should provide power net system drawing, short circuit capacity and single earthing capacitor current within one month after effectiveness of the contract.

Selection of electric control system(Specificationa and quantity will be based on finaldesign)

Q.T.

Ø  HV switch gear(10KV  Hand cart vacuum switch gear)

Lead-in panel and Potential transformer cabinet(by buyer)

1

mutual inductance panel(by buyer)

1

Transformer panel(by buyer)

1

Air compressor lead out panel

1

Air compressor panel

1

Ø  LV control panel(380V  Drawer type switch gear)

5

Ø  DC power supply screen(DC220V)(by buyer)

1

Ø  water resistance soft starter

1

Ø  M.S. power regulator

1

Ø  LV transformer(by buyer)

1

Image (for reference, determined by final design)