LNG Atmospheric Pressure Storage Tank

Model Number: DG-001 Brand Name: DOER Key Specifications/Special Features: 1. Product description The LNG atmospheric pressure storage tank, characterized with a large storage volume, low work pressure and high safety factor and more, is the key equipment for the LNG liquefaction plants, reservation stations and receiving stations.There are two kinds of the monolithic structures for the LNG atmospheric tanks:1) Single-capacity tanks (volume≤6000m), adopting a vertical flat base, cylinder, double walls and both inner and outer vault construction.2) Single-capacity (volume＞6000m) and full-capacity tanks, adopting a vertical flat base, cylinder, double walls, inner suspended ceiling and outer vault constructions.The full-capacity tanks are also equipped with hot corner mask ant.The interlayer of the LNG atmospheric pressure storage tanks is filled with perlite and the bottom interlayer is filled with foam glass bricks for cold insulation.
In order to keep the low evaporation rate, the interlayer is usually filled with dry nitrogen gas to keep the perlite in a dry condition in a long time.

The composition of the LNG atmospheric tanks: inner tank, outer tank, bottom heat-insulation layer, interlayer heat-insulation layer, equipment ladder and platform, valves and instruments and the base and more.

The tank base adopts overhead form and the whole equipment is installed on a reinforced concrete base.
The base platform is supported with upright concrete posts for air ventilation and moist insulation.

The inner tank is mainly composed with a tank top, cylinder and base plate. Every part is made of Austenitic stainless steel S30408 to store the LNG.

The outer tank is composed of the top cover, cylinder, and the base plate. Every part is made of Q345R stainless steel plates.

Both inner and outer top covers adopt latitudinal and attitudinal ribbed vault structure.
The cylinders adopt the reinforced structure with built-in angle rings while the base plates adopt a combined pressure-bearing structure with bow-shaped edge plates and webs.

The accessory structures: winding staircase, operation platform, firefighting devices.
The tank surface is painted with imported JOTUN paints, which could withstand 2 years without color fading and peeling off.
The operational life span of the tanks is no less than 20 years.

2. Range of tank specifications

Non-standard customization is available according to the users’ specific requirements.
The general parameters of the tanks are as the following:
Storage volume of unit tank: 200-100000m