Cryogenic Distillation Technology

Shenger Gas cryogenic air separation equipment is the core equipment for the large-scale preparation of high-purity oxygen, nitrogen and argon. This system is based on mature and reliable cryogenic distillation technology, and deeply cools the air to the liquefaction temperature. It uses the different boiling points of each component to perform efficient separation in the distillation tower, and finally obtains the required high-purity gas product. This technology is the most economical and stable solution to achieve oxygen production scale of 10,000 tons or above and obtain ppb-grade ultra-high purity gases.

Core technology principle

Cryogenic distillation is the cornerstone technology of modern industrial gas separation. The process is mainly divided into the following steps:

• Air compression and purification: After the ambient air is removed by a filter, it is compressed by a multi-stage compressor, and then it is completely removed by a molecular sieve adsorber to prevent subsequent system freezing and blockage.
• Heat Exchange and Cooling: The clean high-pressure air is heat exchanged with the refluxed low-temperature product gas in the main heat exchanger and is gradually cooled to close to the liquefaction temperature.
• Distillation separation: Liquefied air enters the double-stage distillation column system. In the lower tower (pressure tower), the air is initially separated; in the upper tower (low pressure tower), the final distillation technology is performed using cryogenic distillation technology, nitrogen (low boiling point) is distilled from the overhead and oxygen (high boiling point) accumulates at the bottom of the tower to obtain the product of the desired purity.
• Storage and conveying: The separated liquid or gaseous products are introduced into the storage tank and then transported to the user end through a pump or booster system.

Our installation has made several optimizations to this classic process, significantly improving efficiency and reliability.

Product Features and Advantages

• Ultra-high purity: It can stably produce oxygen and nitrogen products with purity up to 99.999%.
• Large-scale production capacity: The oxygen production capacity of a single set of devices can range from thousands of Nm³ to tens of thousands of Nm³ per hour, meeting the gas consumption needs of large industrial enterprises.
• Low-energy consumption design: adopts high-efficiency molecular sieve, brazed aluminum plate-fin heat exchanger, advanced regular packing tower, etc., to significantly reduce unit power consumption.
• Highly automated: Integrated DCS/SIS control system to realize "one-click start", unattended, remote monitoring and fault diagnosis.
• Excellent stability: Based on the design of cryogenic distillation technology, the device can operate continuously and stably for more than three years, and the overhaul cycle is long.

Technical Parameter Table

Industry application cases

Cryogenic air separation device is an indispensable "power source" for many basic industries, and typical applications include:

• Metallurgical Industry: Steel Smelting, Oxygen-rich spraying, Copper, Nickel-Lead-Zinc and other non-ferrous metals smelting.
• Chemical and petrochemical: coal gasification (IGCC), ethylene cracking, synthesis gas manufacturing, nitrogen protection.
• Coal Chemical: Oxygen supply in the process of coal to methanol, coal to oil, coal to natural gas, and coal to olefins.
• Electronics industry: High-purity nitrogen and oxygen background gas required for large-scale integrated circuit manufacturing.
• Aerospace: the production and supply of liquid oxygen and liquid nitrogen.
• Sewage treatment: oxygen-rich aeration process for activated sludge in the field of environmental protection.

Why choose us?

We are not only a equipment supplier, but also a partner in gas solutions. Choosing Shenger Gas' cryogenic product means you get:

• Tailored design: Optimized process design based on your specific gas volume, purity, and pressure needs.
• Full life cycle service: from feasibility study, EPC general contracting, installation and commissioning to long-term operation and maintenance, spare parts supply and remote technical support.
• Continuous innovation in technology: We continue to invest in R&D and optimize cryogenic distillation technology, aiming to continuously reduce operating costs and increase return on investment for customers.

Welcome to contact our technical engineers to provide you with exclusive technical solutions and quotations

Sheng'er Gas possesses a team of experts, professors, and engineering technicians who have been engaged in the research and development of nitrogen production, oxygen production, gas separation, purification, and purification technologies, as well as product design.They have established technical collaborations with world-renowned companies such as Hangzhou Institute of Advanced Technology, China Nuclear Power Engineering Co., Ltd., Siemens AG from Germany, Bode GmbH from Germany, GEMÜ GmbH from Germany, Takeda Pharmaceutical Company Limited from Japan, and Iwatani Corporation from Japan.

 

 

The produce of distillation column

The frame of cold box

the plate rolling in factory

 

 

 

 

Hot Tags: Cryogenic Distillation Technology, China Cryogenic Distillation Technology manufacturers, suppliers, factory, Cryogenic Liquid Nitrogen Plant, Cryogenic Liquid Nitrogen Plant, Cryogenic Liquid Nitrogen Plant, ,