Liquid Oxygen Storage Tank

Liquid Oxygen Storage Tank

Overview

The liquid oxygen storage tank features a double cylindrical design, comprising an inner cylinder and pipes made from stainless steel S30408, while the outer shell is constructed from Q245R alloy steel. The space between these layers is filled with expanded perlite, commonly referred to as pearl sand, and is equipped with a specially treated adsorbent. A high vacuum (ranging from 0.5 to 6 Pa) is maintained within the tank, which has a capacity of 200 m³ or less. The operational pressure is notably high, with two tanks in four workshops operating at 2.0 MPa. Additionally, a gasifier is installed externally, facilitating easy filling of the tank and direct pressurized gas delivery. Depending on their application, these tanks are categorized into stationary and transport types. The stationary type is primarily used for the storage of cryogenic liquids and is typically installed at production sites, usage points, or cryogenic supply stations. In contrast, the transport type is designed for the transportation of low-temperature liquids from production sites or supply stations to usage points, often utilizing ground or water transport methods; these are commonly referred to as tankers, trailers, and transport trucks. There are two installation configurations available: vertical (L) and horizontal (W).

Features

• Insulation Method: Powder insulation

• Operating Pressure: 0.2-3.0 MPa

• Usable Volume: 5 m³ - 200 m³

• Design Temperature: -196 °C to -50 °C

• Filling Percentage: 95%

Advantages: The tank utilizes vacuum powder insulation, boasts a compact structure, exhibits low daily evaporation rates, occupies minimal space, features centralized control, and ensures safety and reliability, making it convenient for operation and maintenance.

Applications

1. Metallurgical Industry: High-purity oxygen is supplied during steelmaking, reacting with carbon, phosphorus, sulfur, silicon, and other elements. This process not only reduces carbon content in steel but also aids in the removal of impurities such as phosphorus, sulfur, and silicon. The heat generated from these oxidation reactions helps maintain the necessary temperature during steel production, thereby reducing melting time and enhancing steel quality. In iron production within blast furnaces, increasing the oxygen concentration in the air can lower coke consumption and increase metal yield. In non-ferrous metal production, enriched oxygen usage also shortens melting time and boosts output.

2. Chemical Industry: In synthetic ammonia production, oxygen is primarily used for the oxidation of raw gas, such as in the thermal cracking of heavy oil and the gasification of coal dust, improving processes and increasing fertilizer production.

3. Defense Industry: Liquid oxygen serves as an excellent oxidizer for modern rockets. It is also essential as an oxidizer in supersonic aircraft. The combustible material becomes highly explosive upon contact with liquid oxygen, making it suitable for the production of liquid oxygen explosives.

4. Medical Services: Oxygen supply is crucial in hypoxic conditions, such as during diving, mountaineering, high-altitude flights, space missions, and medical procedures.

Production Process

1. Volume and drawing acquisition

2. Material preparation and cutting

3. Steel rolling

4. Welding of steel plates

5. Assembly of the storage tank

6. Filling insulation material between the inner and outer vessels

7. Creating a vacuum in the storage tank

8. RT and MT inspection, along with X-ray inspection

9. Rust removal from the tank

10. Installation of various valves

Advantages

• Adiabatic Performance: The selection of insulation materials filled with perlite sand, combined with vacuum technology and high-quality processes, ensures optimal adiabatic effects. The anti-corrosion surface coating undergoes sandblasting, rust removal, purging, spraying, and other processes, utilizing a two-component fast-curing liquid coating.

• Safe Technical Specifications: The storage tank employs a "combined safety system" featuring two sets of safety valves that operate simultaneously. One side can be closed during regular safety valve inspections while the other continues to function, ensuring safe operation of the storage tank.

• Control System: A pressure gauge, differential level meter, and level comparison table are installed at the top of the storage tank, allowing for real-time monitoring of stock levels and pressure changes, facilitating operations during filling and emptying.

• Monitoring System: Specialized vacuum gauges, vacuum manometers, and vacuum valves are installed at the bottom of the storage tank. They can periodically or continuously test the vacuum level in the interlayer space using a vacuum meter, ensuring safe operation of the storage tank.

Specifications

This is a partial model. We accept custom orders based on client requirements.