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4500/4500-type solution for small and medium-sized air separation plant in nonferrous industry

4500/4500-type solution for small and medium-sized air separation plant in nonferrous industry
Project Background

According to the influence and reform of the general environment of the non-ferrous industry, the problems faced by this industry are becoming more serious, and the control of production capacity is particularly important. Recently, the 4500/4500 type small air separation plant project signed with customers by DEAR air separation, through the trial run stage, all the technical indicators have reached or exceeded the design standard, and have been continuously sending nitrogen for several days, which has been well received by users.

Scheme Introduction

Solution advantages

This device uses molecular sieve purification, pressurized turbine expansion machine to supply cooling for the device.

The choice of this process is safe, reliable and economic and reasonable. The main reasons are:

1. Good security

The whole set of equipment has low operating pressure, simple process, high level of equipment safety, long switching cycle of molecular sieve system, longer service life of switching valve and reducing potential safety hazard.

Main cooling (K1) extracts a large amount of liquid oxygen to ensure the possibility of the accumulation of hydrocarbon to the minimum.

2. High reliability

A large amount of surplus nitrogen can be sent to the water cooling tower, which reduces the load of the water chilling unit, reduces the energy consumption of air separation and reduces the use cost, thus further improving the reliability of the unit.

3. Convenient operation and maintenance, simple craft

Technical parameters

Product

Output N m3/H

Purity

Outlet cold box pressure Mpa

Temperature

Note

Oxygen gas

4500

≥99.6% O2

0.015

Normal temperature

External compression to 2.5Mpa

Liquid oxygen

150

≥99.6% O2

Inlet storage tank

Saturated

 

Nitrogen gas

4500

≤10ppmO2

0.008

Normal temperature

Precooling system

Nitrogen gas

4500

≤10ppmO2

0.008

Normal temperature

External compression to 2.5MPa

Note: measurement unit Nm3/H is measured at 0℃, 0.1013Mpa (A). It is called standard state quantity.

1.1 take oxygen and nitrogen at different times

1.2 Operation Cycle (interval between two big heating): ≥2 years

1.3 heating and cooling time of the unit :~ 36 hours

1.4 start-up time of the device (from the start of the expansion machine to the purity index of the oxygen product ):~ 40 hours

 

Supporting unit Unit
1. Centrifugal air compressor 1 Set
2. Air precooling system 1 Set
3. Purification system 1 Set
4. Booster turbine expansion unit 1 Set
5. Distillation column system 1 Set
6. Oxygen compression system 1 Set
7. Nitrogen compression system 1 Set
8. Liquid storage system 1 Set
9. Instrument control system 1 Set
10. Electronic control system 1 Set
DEAR Air Separation provides you 4500/4500-type solution for small and medium-sized air separation plant in nonferrous industry to help you learn more about air separation equipment cases and air separation products. You can also view the Non-ferrous industry solutions for air separation equipment and all solutions for the air separation equipment industry.
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