Small Cryogenic Air Separation Unit
Introduction
It is a compact equipment that integrates the core unit of the cryogenic air separation process onto a solid base, enabling overall transportation, lifting, and rapid production. It is particularly suitable for scenarios where the gas usage scale is relatively flexible and there are specific requirements for the construction period and site.
Process Flow
1. Air compressor: Air is compressed by the air compressor to 0.5Mpa~0.7Mpa.
2. Pre cooling: The air is pre cooled to 5 ℃~10 ℃ in the pre cooling unit and the moisture is separated.
3. Purification: Air is purified through molecular sieves to remove residual moisture, carbon dioxide, and hydrocarbons from the gas.
4. Air expansion: Air expands in an expander to provide the required cooling capacity for the device.
5. Heat exchange: Air exchanges heat with the reflux oxygen, nitrogen, and contaminated nitrogen in the main heat exchanger of the fractionation tower, and is reheated to ambient temperature by the cooled contaminated nitrogen.
6. Undercooling: Liquid air and liquid nitrogen are supercooled by nitrogen and contaminated nitrogen in the subcooler.
7. Distillation: Air undergoes distillation and separation in the lower tower, resulting in the production of nitrogen gas at the top of the upper tower.
Parameter
|
Model |
Oxygen production (Nm³/h) |
Purity (%) |
Oxygen outlet pressure (KPa) |
nitrogen production (Nm³/h) |
Purity (ppmOo2) |
Nitrogen outlet pressure (KPa) |
Processing air volume (Nm³/h) |
Startup time (h) |
work cycle (m) |
|
KNOD-50/100 |
50 |
99.6 |
20 |
100 |
<10 |
15 |
300 |
12 |
6 |
|
KNOD-100/200 |
100 |
99.6 |
20 |
200 |
<10 |
15 |
610 |
12 |
6 |
|
KNOD-150/600 |
150 |
99.6 |
20 |
600 |
<10 |
15 |
920 |
12 |
6 |
|
KNOD-170/400 |
170 |
99.6 |
20 |
400 |
<10 |
15 |
1200 |
12 |
6 |
|
KNOD-350/800 |
350 |
99.6 |
20 |
800 |
<10 |
15 |
2300 |
16 |
12 |
|
KNOD-550/1200 |
550 |
99.6 |
20 |
1200 |
<10 |
15 |
3300 |
16 |
12 |
|
KNOD-1000/1000 |
1000 |
99.6 |
20 |
1000 |
<10 |
15 |
5700 |
24 |
12 |
Feature
Fast construction:
Prefabricated modules in the factory require less on-site work and can shorten the construction period.
Land saving:
Compact structure, high integration, saving on-site space.
High flexibility:
It can be migrated and reused as a whole, adapting to project changes.
Reliable Quality:
Standardized Manufacturing and Debugging in the Factory, More Controllable Quality
Application Industry
New materials/new energy:
Providing high-purity nitrogen and other protective gases for polycrystalline silicon, semiconductors, optical fibers, etc.
01
Metal processing:
Protective gas and combustion assisting gas used for metal heat treatment, welding and cutting.
02
Chemical and Energy:
Used for raw gas and protective gas in coal chemical and fine chemical industries, as well as nitrogen flooding in oil fields.
03
Other scenarios:
As a supplement to large pipeline gas supply, on-site gas production as an alternative to gas cylinder supply, or for special needs such as laboratories and medical care.
04
Company Introduction
CNCD is a manufacturer specializing in the production of pressure vessels, established in 2002 and has been in operation for over 20 years. Established in 2014, the Ministry of Foreign Trade has sold its products to over 70 countries.
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