Heze Boiler FactoryLimited Company

60 cubic meter LNG tank

Product Category: LNG Storage Tanks

LNG stands for Liquefied Natural Gas. Its primary component is methane. LNG is colorless, odorless, non-toxic, and non-corrosive. Its volume is approximately 1/600th of the same amount of gaseous natural gas, and its weight is about 45% of the same volume of water. The calorific value is around 52 MMBtu/ton (1 MMBtu = 2.52×10^8 calories).

Model:

60 cubic meters0.8MPa

Detailed Description

【Product Name】: LNG Storage Tank

Manufacturer:Huzhou Boiler FactoryLimited Company

LNG Storage Vessel

He Cook Group

An LNG storage tank is a jacketed vacuum powder-insulated pressure vessel specifically designed for storing and supplying low-temperature liquefied gases (such as liquid nitrogen, liquid oxygen, liquid argon, liquid carbon dioxide, etc.). It has been widely used in both industrial production and daily life. This article briefly discusses the basic requirements and safety points for use, combining an analysis of the hazardous characteristics of low-temperature liquids with various gas supply modes for low-temperature liquid storage tanks.

1. Analysis of Low-Temperature Liquid Hazardous Characteristics

Low-temperature liquids possess hazardous characteristics such as lower boiling points, greater expansibility, stronger asphyxiating properties, and strong oxidizing capabilities.

1.1 Boiling points of low-temperature liquids under 101.3 KPa pressure: Liquid nitrogen at -196°C, liquid oxygen at -183°C, and liquid argon at -186°C. Contact with the human body can cause severe frostbite to the skin and eyes. In cases of minor leakage or internal leakage in valves and pipes, these liquids absorb heat from the surrounding environment, causing rapid condensation and frost formation at the leak point, which can lead to freezing in severe cases.

1.2 Low-temperature liquids absorb energy from the surrounding environment due to high temperatures or large leaks, causing their volume to expand as they rapidly vaporize. At 0℃ and a pressure of 101.3 KPa, the volume of gas produced from 1L of low-temperature liquid is: nitrogen at 674L, oxygen at 800L, and argon at 780L. Inside sealed containers or pipelines, the increase in internal pressure due to the vaporization of low-temperature liquids can easily lead to overpressure explosions.

1.3 In the surrounding environment of low-temperature liquid storage tanks, the vaporization of leaked low-temperature liquids can easily form a rich gas area. High concentrations of nitrogen, argon, or carbon dioxide can readily cause asphyxiation injuries. Additionally, high oxygen concentrations can lead to oxygen enrichment injuries.

1.4 Oxygen is a powerful oxidizing agent with extremely strong oxidizing properties. Liquid oxygen, when in close proximity to combustible materials, is highly flammable upon contact with an open flame; it can easily produce detonations upon contact due to vibrations or impacts; and when mixed with combustible materials, it poses a potential explosion hazard. Liquid oxygen can adhere to clothing and fabrics, and upon contact with an ignition source, it can cause spontaneous combustion, potentially causing harm to individuals.

2. Low-Temperature Liquid Storage Tank Air Supply Mode and Basic Requirements

Based on different application scenarios and user requirements, the gas supply modes for low-temperature liquid storage tanks are primarily

Available services: High-pressure gas cylinder refilling, low-temperature insulated gas cylinder packaging, centralized gas supply through pipelines, and low-temperature liquid spray feeding.

LNG60 cubic meter, 0.8 MPa parameter value:

60 cubic meter LNG storage tank

Formed:

The natural gas produced from the gas field is first purified and treated, then liquefied under ultra-low temperature (-162℃) and atmospheric pressure to form liquefied natural gas.

The critical temperature of LNG between gas and liquid phases at atmospheric pressure is -162℃.

The standard commonly used in LNG manufacturing is API 620.

LNG Storage Tank

By low-temperature liquid storage as the gas source, suitable for high-pressure gas cylinder refueling, and applicable to numerous fields.

Individual users of scattered gas typically require the standardized implementation by professional production and filling units. According to current national administrative licensing requirements, filling units must hold a designated production (storage) permit for hazardous chemicals, an安全生产license, and a gas cylinder filling permit, collectively known as "one document and two permits," to carry out high-pressure gas cylinder filling. At the liquid outlet of low-temperature liquid storage tanks, a low-temperature liquid pump and a high-pressure gasifier are installed. Using a high-pressure filling system, high-pressure gases are filled into specialized gas cylinders. In the gas cylinder filling process, a pipeline low-temperature and overpressure automatic shutdown protection system must be set up. If there is still low-temperature liquid at the gasifier outlet or if the pipeline pressure exceeds the cylinder's high working pressure, the low-temperature liquid pump should automatically shut down, and the low-temperature liquid storage tank should stop supplying gas to prevent the direct filling of low-temperature liquid into the cylinder or overpressurization during filling that could cause an explosion.