Product Description

Brand: He Guo Group Model: CFW-60/0.8

Material: Stainless Steel, Diameter: 2916mm

Application Range    -162℃    Volume    60000L

Heat Exchange Area - See drawing m², Ambient Temperature - See drawing °C

Wall thickness: 8mm; Outer dimensions: φ2916*14929mm

Origin: Shandong Heze

60-cubic-meter LNG Storage Tank, Horizontal LNG Storage Tank, Professional Manufacturer of Liquefied Natural Gas Storage Tanks

LNG tanks are atmospheric pressure, low-temperature, large-scale storage vessels, typically with a flat-bottomed, double-walled cylindrical design. The inner cylinder is generally made of 9% nickel alloy steel, but can also be all-aluminum, stainless steel film, or pre-stressed concrete, with the outer wall being carbon steel or pre-stressed concrete. The suspended insulating support platform at the top of the wall is made of aluminum, while the tank roof is constructed from carbon steel or concrete. The main insulating materials inside the LNG tank include expanded perlite, elastic glass fiber felt, and foam glass bricks.

LNG Tank Characteristics Requirements

Low-temperature resistance

The boiling point of liquefied natural gas at atmospheric pressure is -162°C. Therefore, LNG storage tanks must have excellent low-temperature resistance and insulation properties.

(2) High safety requirements

Due to the storage of low-temperature liquids inside the tank, in the event of an accident, the refrigerated liquid would volatilize in large quantities, with the vaporization amount being approximately 625 times that of the original refrigerated state, forming an explosive mixture in the atmosphere. Therefore, it is required that the tank be constructed with a double-walled design and utilize the principle of containment. In the event of a leak in the first layer, the second layer can completely seal off the leaked liquid and the evaporated gas, ensuring storage safety.

(3) Special material.

The inner罐 must be capable of withstanding low temperatures and is made of Austenitic stainless steel, while the outer cylinder is constructed from Q345R ordinary low-carbon alloy steel plate.

(4) Insulation measures are stringent.

Due to the maximum temperature difference between inside and outside of the tank reaching up to 200℃, the tank must have excellent thermal insulation properties to maintain an internal temperature of -160℃. High-performance thermal insulation materials should be filled between the inner and outer tanks. The thermal insulation material at the bottom of the tank must also possess sufficient load-bearing capacity. (5) Good seismic performance

The seismic requirements for general buildings are to crack but not collapse under specified seismic loads. To ensure the safety of storage tanks under unexpected loads, they must possess excellent seismic performance. It is essential to ensure that the tank does not sustain damage under the given seismic intensity. (6) Strict construction requirements

Tanks' weld seams must undergo 100% magnetic particle inspection (MT) and 100% vacuum tightness test (VBT). Strict selection of insulation materials is required, and the prescribed procedures must be followed during construction.

Huzhou Boiler Factory Co., Ltd. is a key enterprise designated by the China National Quality Supervision, Inspection and Quarantine Administration for the production of boiler pressure vessels, a vice-president unit of the China Industrial Boiler Industry Association, a member unit of the China Association of Heating, Ventilation and Drainage, and holds B-grade boiler manufacturing (certification number TS2110587-2011), third-class pressure vessel manufacturing (certification number TS2210916-2013) and design qualifications (certification number TS1237085-2011). It has also passed the ISO9001 international quality management system certification.

Heze Boiler Factory Co., Ltd. Main Products:

Chemical Storage Tanks (liquefied gas tanks, liquefied petroleum gas tanks, liquid ammonia tanks, propane tanks, propylene tanks, isobutane tanks, methyl chloride tanks, etc.); Non-standard Pressure Vessels (towers, heat exchangers, autoclaves, reaction vessels, stainless steel containers, etc.)

Refrigeration Auxiliary Equipment (evaporative coolers, ammonia storage tanks, drain drums, circulating drums, oil separators, separators, condensers, intermediate coolers, siphon tanks, economizers, etc.)

Boiler equipment (including steam boilers, hot water boilers, thermal oil boilers, oil-gas boilers, waste heat boilers, etc.)

Low-Temperature Storage Tanks (Liquid Oxygen Tanks, Liquid Oxygen Vessels, Liquid Nitrogen Tanks, Liquid Nitrogen Vessels, Liquid Argon Tanks, Carbon Dioxide Tanks, LNG Tanks, Liquefied Natural Gas Tanks)

60-cubic-meter LNG Storage Tank, Horizontal LNG Storage Tank, Professional Manufacturer of Liquefied Natural Gas Storage Tanks

Product Description

Brand Hegu Group Model CFW-30/0.8

Material: Stainless Steel, Diameter: 2916mm

Application Range    -162℃    Volume    30000L

Heat Exchange Area - See drawing sqm, Environmental Temperature - See drawing °C

Wall Thickness: 8/10mm, External Dimensions: 2916*8289mm

Origin: Shandong Heze

Horizontal LNG Storage Tank 30 Cubic LNG Storage Tank 60 Cubic LNG Storage Tank 100 Cubic Natural Gas Storage Tank

Low-temperature LNG storage tanks are double-layered structures, with the inner tank storing low-temperature natural gas liquids, withstanding the pressure and low temperatures of the medium. The material of the inner tank is SS30408. The outer shell serves as a protective layer for the inner tank, maintaining a certain distance to form an insulating space, withstanding the gravitational loads of the inner tank and the medium as well as the vacuum negative pressure of the insulating layer. The outer shell does not come into contact with the low temperature and is made of container steel. The insulating layer is mostly filled with mica sand and high vacuum is drawn. The evaporation rate of low-temperature LNG storage tanks is generally less than 0.2%.

Low-Temperature LNG Storage Tank Structural Design

1.1 Liquid Filling System

The filling is divided into top filling and bottom filling, equipped with a quick connector CN-1 and a four-way connector connecting to the top filling valve V3 and the bottom filling valve V2, respectively. Tubes and transition joints are connected to the inner cylinder.

Tubes are selected in sizes φ28×2 and φ45×3.5.

1.2 Drainage System

The valve V6 can directly drain the fluid, connected from the bottom of the cylinder; the pipes are selected in φ45×3.5. V6 is chosen with 32gDA25C, with specifications of DN40PN4.0.

1.3 Vacuum Measurement System

VR vacuum silicon tubes, used to measure the vacuum degree of the tank's sandwich layer, connected to the evacuation pipe of the layer. The sandwich layer should be re-evacuated when the vacuum degree of the vacuum layer exceeds 3Pa, to ensure the vacuum degree of the layer and enhance the insulation effect.

1.4 Vacuum Insulation Panel System

VV vacuum vent, using CF-40 with DN 40, for vacuum extraction; closes when the vacuum level reaches the required standard, maintaining the interlayer vacuum.

1.5 Level Measurement System

Two pipelines are extracted from the upper and lower parts of the cylinder, with the top section being the vapor phase and the bottom section the liquid phase, connected by a level gauge valve. The L1 level gauge valve PS×Z-1 is connected to a pressure gauge valve and a pressure gauge, with the liquid level range being 0 to 6 meters of water column.

1.6 Full Mouth Measurement

Install the pipeline according to the set liquid level. When the liquid level reaches the set value, it flows downward through the pipe to the fill valve MV. When filling, this valve opens until liquid begins to flow out, indicating the tank is full. Close the valve. Select a 32gDA10C valve, specification: DN20 PN4.0.

1.7 Self-pressurizing System

The pressure booster valve V1 is connected to the PBC-1 supercharger, which uses the CFB03-00 model. It vaporizes a portion of the liquid flowing down from the tank, then introduces it into the inner tank, raising the pressure inside. The liquid is expelled under pressure.

1.8 Gas Venting System

When the pressure at the top of the container increases, gas is expelled through the pipeline, passing through vent valve E1, then to a one-way valve CV. Since gas can only flow outward, a one-way valve is used to prevent backflow. Therefore, a flame arrester is connected after the one-way valve, as gas release and air contact may cause sparks. The flame arrester is designed to prevent sparks from entering the inner tank with the gas, which could ignite and cause an explosion.

Horizontal LNG Storage Tank 30 Cubic LNG Storage Tank 60 Cubic LNG Storage Tank 100 Cubic Natural Gas Storage Tank