LNG Storage Tanks | Manufacturer of LNG Storage Tanks--Heze Boiler Factory Co., Ltd.

LNG storage tanks are specialized equipment designed for storing liquefied natural gas.TwoCategory pressure vessels, on-site inspection by the Technical Supervision Bureau, issuance of pressure vessel inspection certificate, completion of processes such as external rust removal and painting. Liquefied gas storage tanks undergo strict quality assessment for the material, dimensions, weld quality, operational quality, installation quality, internal equipment, and safety accessories. Widely used in industries such as industrial gases and gas, including units with high gas consumption like machinery, chemicals, metallurgy, etc., serving as centralized gas supply.Please provide the Chinese content to be translated.High-quality equipment. Features include long service life, small footprint, easy operation, and centralized control. Gas that leaks from LNG tanks is also very cold, and contact with the skin can cause burns similar to blisters from low-temperature burns. Natural gas is an asphyxiant. The oxygen content in the atmosphere is approximately 21%, and when the oxygen content in the air falls below 18%, it can cause human asphyxiation.

LNG Storage Tank Operation Procedure:

Wear antistatic suits, shoes, and helmets, and place devices prone to static, such as phones and computers, in a safe area.

2. Check the tank's thermometer, level gauge, pressure gauge, flammable gas alarm, and safety valve for proper operation.

3. Ensure all valves on the tanks to be pressurized are closed, with the exception of the tank root valve and the emergency shutdown valve.

4. The liquid inlet valve at the bottom of the tank, as well as the pressure boost liquid and vapor phase valves, are open. Both the inlet and outlet valves of the pressure booster vaporizer are open.

5. Open the low-temperature cutoff valve before the vaporizer, the at-room-temperature flanged ball valve after the vaporizer, and all valves required to be opened in the pressure regulating system.

When the gas supply volume is less than 1000Nm3/h up to 2000Nm3/h, one storage tank's liquid discharge is sufficient to meet the gas supply requirements.

7. When the tank pressure rises above 0.15 MPa higher than the outlet pressure, slowly open the liquid outlet valve and start supplying gas.

8. During operation, the LNG tank must maintain a liquid level at or below 90% and at or above 15% for the low limit.

8. The on-duty personnel must regularly patrol during the gas supply, monitor the liquid level and pressure changes of the storage tanks, and ensure at least three records per day.

9. Regularly inspect the tank, welds, valves, etc., and take immediate action if any leakage is detected to ensure that LNG meets production requirements.

Heze Boiler FactoryLimited Company

60 cubic meter LNG storage 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 x 10^8 calories).

Model:

60 cubic meters0.8MPa

Detailed Description

【Product Name】: LNG Storage Tank

Manufacturer:Heze Boiler FactoryLimited Company

LNG Storage Vessel

He Guo 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 is widely used in both industrial production and daily life. This article briefly discusses the basic requirements and safety usage points by analyzing the hazardous characteristics of low-temperature liquids and combining various gas supply modes for low-temperature liquid storage tanks.

1. Analysis of Low-Temperature Liquid Hazardous Properties

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

1.1 Boiling points of low-temperature liquids at 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 leaks 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 surrounding energy from high temperatures or large leaks, causing their volume to expand due to rapid vaporization. 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 liquid can easily vaporize upon leakage, forming a rich gas area. High concentrations of nitrogen, argon, or carbon dioxide can极易 lead to asphyxiation injuries. Additionally, high oxygen concentrations can also result in oxygen enrichment injuries.

1.4 Oxygen is a powerful oxidizer with extremely strong oxidizing properties. Liquid oxygen, when in close proximity to combustible materials, is highly flammable upon contact with an open flame; contact with combustible materials can easily lead to explosions due to vibrations or impacts; mixing with combustible materials poses a potential explosive hazard. Liquid oxygen can adhere to clothing and fabrics, and upon contact with an ignition source, it can cause a flash fire, posing a risk to personal safety.

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

Based on different application scenarios and user requirements, the gas supply mode of low-temperature liquid storage tanks mainly varies.

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

LNG60 cubic meters, 0.8 MPa parameter value:

60 cubic meter LNG tank

Formed:

The natural gas produced from the gas field is first purified, 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 of the American Petroleum Institute.

LNG Storage Vessel

Supplying gas for high-pressure cylinders using low-temperature liquid storage tanks, suitable for a wide range of applications.

Individual users of scattered gas generally require 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 occupational safety and health license, and a gas cylinder filling permit, collectively known as "one document and two permits," to conduct high-pressure gas cylinder filling. At the liquid outlet of a low-temperature liquid storage tank, a low-temperature liquid pump and a high-pressure gasifier are installed, and the high-pressure filling system is used to fill high-pressure gas into specialized gas cylinders. In the gas cylinder filling process, it is mandatory to set up an automatic stoppage protection system for pipeline low temperature and overpressure. If there is still low-temperature liquid at the gasifier outlet or the pipeline pressure exceeds the high working pressure of the gas cylinder, the low-temperature liquid pump should automatically stop, and the low-temperature liquid storage tank should cease gas supply to prevent direct filling of low-temperature liquid into the gas cylinder or overpressure filling that could cause an explosion.