Cryogenic Cold Box

The cryogenic cold box is the most core modular device in the large cryogenic air separation device (ASU), and is known as the "heart" of the entire device. It is a large steel structure box filled with thermal insulation materials such as pearlescent sand, which integrates all the critical heat exchange and distillation equipment required for the air separation process. Under extremely low temperature environments near -200°C, the compressed air is efficiently separated into high-purity industrial gases such as oxygen, nitrogen, and argon through the principle of distillation. The cryogenic cold box designed by our company has become the first choice for many large-scale chemical, metallurgy and energy projects around the world with its excellent thermal insulation performance, stable operating efficiency and long service life.

Core product features

1. Modular design and manufacturing: Adopt advanced 3D modeling and modular design, prefabricating and testing are completed in the factory, greatly shortening the on-site installation time and reducing on-site construction risks and costs.

2. Extreme insulation performance: Optimized cold box structural design, combined with high-performance pearlescent sand filling, minimize cold losses and ensure the economical operation of the device.

3. Application of ultra-low temperature materials: The key low-temperature pipelines and equipment use high-quality low-temperature materials such as aluminum alloys and stainless steel to ensure the toughness and safety of materials under extreme working conditions and eliminate cold and brittle phenomena.

4. Highly integrated and compact: The main heat exchanger, distillation tower, condensation evaporator, supercooler and other valve instruments are highly integrated, with a compact structure and saving space.

5. Intelligent safety system: Integrate pressure and temperature sensors, safety valves and blasting discs, equipped with advanced DCS/SCADA control system, real-time monitoring, automatic adjustment and safety interlocking, ensuring long-term and stable operation under unattended conditions.

Technical Parameters and Performance Indicators

The following are typical technical parameters for our standard series of cryogenic cold boxes. All equipment supports customized design.

Industry application cases

Our cold box technology is widely used in the following fields:

• Metallurgical Industry: Provide high-purity oxygen and nitrogen for blast furnace oxygen-rich injection and converter steelmaking for steel smelting.
• Chemical and petrochemical: used in coal chemical industry, fertilizer production (synthesis of ammonia), ethylene cracking and other processes.
• Electronics Manufacturing: Provides ultra-high purity nitrogen (PPB grade) and oxygen for semiconductor and photovoltaic panel production.
• Medical and Food: Provide medical-grade oxygen and nitrogen for food preservation.
• Energy and aerospace: used in cutting-edge fields such as IGCC power generation, rocket fuel preparation, etc.
• Successful case: The 60,000 Nm³/h air-dividing device equipped with a cold box provided by a large steel group has been operating stably for more than 5 years, saving electricity consumption over 10 million kWh per year.

Certification and quality standards

We promise the highest quality and safety standards of our products, and all design and manufacturing processes comply with international standards:

• Design certification: Comply with international standards such as ASME BPVC Section VIII (pressure vessel specification), TEMA (heat exchanger standard).
• Quality system: Completely passed ISO 9001:2015 quality management system certification.
• Materials and Welding: All materials have a traceable material certificate (MTC). The welding process complies with the requirements of ASME Section IX, the welder is certified to work, and 100% non-destructive flaw detection (RT/UT).
• Delivery standard: The equipment undergoes strict helium mass spectrometry leak detection and cleanliness test before leaving the factory to ensure delivery quality.

Why choose us?

Choosing our cold box is not only about choosing a product, but also about choosing a reliable long-term partner.

• Technical Expert Team: With more than 20 years of experience, the team of engineers provides you with comprehensive technical support from process calculation, mechanical design to installation guidance.
• Full life cycle service: Provides one-stop service from technical consultation in the early stages of the project, customized design to later installation and debugging, maintenance and spare parts supply.
• Global project experience: Products are exported to more than 30 countries and regions around the world, adapting to various complex environments and demanding working conditions.

Contact us now to get exclusive technical solutions and quotations for your project needs. Our team of Shenger Gas engineers is ready to serve you at any time.

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