Low-temperature full-volume tank with low-liquid-level material extraction device

Abstract

The invention provides a low-temperature full-volume tank with a low-liquid-level material extraction device. The low-temperature full-volume tank comprises an inner tank, an outer tank, an operation platform and the material extraction device capable of extracting low-liquid-level materials, wherein the material extraction device comprises a material circulating tank and a low-temperature pump which are mounted on the operation platform, a first Venturi mixer mounted at the bottom of the inner tank and a corresponding connecting pipeline; and a low-temperature medium in the material circulating tank can enter the first Venturi mixer through the low-temperature pump and a leading-in pipeline, so that the low-temperature medium in the inner tank can enter the first Venturi mixer through a suction hole of the first Venturi mixer under the action of pressure difference, and the low-temperature medium enters the material circulating tank through a leading-out pipeline after being mixed. According to the low-temperature full-volume tank with a low-liquid-level material extraction device, the low-liquid-level low-temperature medium which cannot be extracted by an immersed pump in a pump column in the low-temperature full-volume tank can be extracted, the invalid volume of the low-temperature full-volume tank is reduced, and the volume utilization rate of the full-volume tank is increased; and the low-liquid-level material extraction device can also be used as a standby extraction facility besides the pump column.

Description

technical field [0001] The invention relates to the technical field of low-temperature liquefied gas storage, in particular to a low-temperature full-capacity tank with a low-level material extraction device. Background technique [0002] Substances that are gaseous at normal temperature and pressure and can be liquefied after proper freezing can be stored safely and efficiently in low temperature and atmospheric pressure storage tanks. Substances that meet this characteristic include methane, ethylene, ethane, propylene, propane, butene, butane and other hydrocarbons involved in the petrochemical industry, as well as ammonia commonly used in the chemical industry. Methane is the main component of natural gas, propane and butane are the main components of liquefied gas, and a considerable proportion is used as industrial and civil clean energy. As the world pays more attention to environmental protection issues, the consumption of clean energy such as liquefied hydrocarbon ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a low-temperature full-capacity tank with a low-level material extraction device to solve the problems in the prior art that the invalid working volume at the bottom of the storage tank is too large and the residual medium that cannot be extracted is too much

Images