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Small air separation plant 3000 solution in petroleum industry

Small air separation plant 3000 solution in petroleum industry
Project Background

The problems of raw material pre-treatment of petroleum, delayed coking unit and wax oil relief hydrocracking unit, and the deep processing and comprehensive utilization of naphtha, which are faced by the petroleum industry, the 3000 type small air separation plant project cooperated with clients this time has improved the comprehensive economic benefits of the products and the level of clean and green production.

Scheme Introduction

Solution advantages

Adopting the process of reflux collision pressurizing nitrogen, the liquid production is relatively large.

1. Use imported centrifugal air compressor.

2. precooling system

The air-cooler unit assembled by the imported compressor has low power consumption, flexible cooling capacity adjustment and reliable performance.

The system can cool the air to 7℃, effectively preventing the molecular sieve adsorber from carrying water accident.

3. purification system

Special molecular sieve for air separation is selected to make the CO2 content in the air less than 1PPm after the adsorber is released.

Molecular sieve adsorber switches over for 8 hours, with less regeneration times and low power consumption.

The switch valve of purification system adopts Japanese tooling products with reliable movement, leakage of 0 and switching times of more than 100,000.

4. distillation column system

Adopt single-stage rectification, waste gas expansion cycle.

The heat exchange system composed of the main heat exchanger, the liquid purifier and the supercooler distributes the cooling amount reasonably, which effectively reduces the loss of liquefaction before air rectification, vaporization after liquid-air throttling and reheat shortage.

Use high-efficiency convection distillation column.

The fully immersed condensing evaporator adopts the explosion-proof design, which further enhances the safety and stability of equipment operation.

Without a separate heating system, the distillation column can be heated, cooled, hydrops and purified in one breath. The operation is simple and fast, and the start-up time is less than 20 hours.

Set up liquid nitrogen recharge system to shorten start-up.

5. turbine expansion unit

Expansion impeller is designed by NREC software, five-coordinate linkage CNC machine tool processing, gas bearing, fan braking, high entropy efficiency and reliable operation.

6. liquid nitrogen storage and vaporization system

Use storage tank self-pressurization to replace liquid nitrogen pump, which reduces investment and operates reliably.

Technical parameters

Product

Output N m & sup3;/h

Purity

Outlet cold box pressure Mpa

Temperature

Note

Nitrogen gas

3000

≤3ppmO2

0.7

Normal temperature

 

Liquid nitrogen

300

≤3ppmO2

0.7

Normal temperature

 

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 :~ 24-hour

1.4 start-up time of the device (from the start of the expansion machine to the purity index of the oxygen product ):~ 20 hours

Supporting unit

Unit

1. Centrifugal air compressor

2. Air precooling system

3. Purification system

4. Booster turbine expansion unit

5. Distillation column system

6 liquid storage system

7. Instrument control system

8. Electronic control system

1 Set

1 Set

1 Set

1 Set

1 Set

1 Set

1 Set

1 Set

 

DEAR Air Separation provides you Small air separation plant 3000 solution in petroleum industry to help you learn more about air separation equipment cases and air separation products. You can also view the Oil industry solutions for air separation equipment and all solutions for the air separation equipment industry.
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