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On-site foaming and filling system and method for pearlite sand in a large lng double-layer spherical tank

A filling system and in-situ foaming technology, applied in fixed-capacity gas storage tanks, pressure vessels, mechanical equipment, etc., can solve the problems of increasing equipment manufacturing costs and the impact of pearlescent sand on thermal insulation performance, saving transportation costs and shortening construction period. Effect

Active Publication Date: 2016-07-06
WUHAN YIYE STEEL STRUCTURE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Pearlescent sand processed in the factory after long-distance transportation will not only increase the manufacturing cost of the equipment, but at the same time, as the weather changes during transportation, the pearlescent sand will be affected by moisture and its thermal insulation performance will be affected.

Method used

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  • On-site foaming and filling system and method for pearlite sand in a large lng double-layer spherical tank

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Embodiment Construction

[0016] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 As shown, a large-scale LNG double-layer spherical tank pearlite on-site foaming filling system includes a silo 2, a rotating heating furnace 3, a separation system, a gas collection bag 4, and a large LNG double-layer spherical tank. The outlet of the silo and the rotating The inlet pipe of the heating furnace is connected, the outlet pipe of the rotating heating furnace is connected with the inlet of the separation system, the outlet of the separation system is connected with the inlet pipe on the top of the large LNG double-layer spherical tank, and the gas collection bag is respectively connected with the lower inlet of the separation system through a hose and the top inlet pipe of the large LNG double-layer spherical tank; the separation system includes a first cyclone sep...

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Abstract

The invention proposes a system and method for on-site foaming and filling of pearlite sand in a large-scale LNG double-layer spherical tank. The device includes a silo, a rotary heating furnace, a separation system, a gas collection bag and a large LNG double-layer spherical tank. After the ore raw material is roasted and expanded by a rotary heating furnace at the construction site, it is separated into a finished pearl sand insulation material through two stages. , use high-temperature compressed air to blow the interlayer of the large double-layer spherical tank first, and after removing moisture, blow the finished pearl sand to the middle interlayer of the LNG double-layer spherical tank. The invention realizes that the large-scale LNG double-layer spherical tank pearlescent sand can complete operations synchronously from processing to filling on site, and improves the heat insulation effect of the LNG double-layer spherical tank.

Description

technical field [0001] The invention belongs to the technical field of pearlite sand filling for large-scale LNG double-layer spherical tanks, and in particular relates to an on-site foaming filling system and method for pearlite sand in large-scale LNG double-layer spherical tanks. Background technique [0002] LNG double-layer spherical tank is a double-layer pressure vessel used to store LNG liquid. The storage volume of a single double-layer spherical tank can reach 3000m 3 . The LNG double-layer spherical tank is mainly composed of an inner tank and an outer tank. The inner tank is mainly used to store low-temperature (-196°C) LNG liquid. The interlayer between the outer tank and the inner tank is filled with pearlescent sand insulation material to protect the inner tank. thermal insulation effect. [0003] Pearlescent sand is a white, porous granular loose material made of acidic volcanic glassy lava after crushing, preheating, and roasting expansion. It has small ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C1/12
Inventor 黄金祥杨国强潘伍覃徐聪张景春
Owner WUHAN YIYE STEEL STRUCTURE