Metallurgy air separation oxygen supply pipe network system and operation method thereof

Abstract

The invention provides a metallurgy air separation oxygen supply pipe network system and an operation method thereof, and belongs to the technical field of metallurgy air separation energy conservation and consumption reduction. The metallurgy air separation oxygen supply pipe network system comprises a high-pressure pipe network and at least one first spherical tank, wherein a communication pipeline is arranged between the first spherical tank and the high-pressure pipe network; a valve is arranged on the communication pipeline; and during operation, an air supply pipeline is arranged betweenthe first spherical tank and a low-pressure user, the opening of the valve is adjusted according to pressure of the high-pressure pipe network, pressure of the high-pressure pipe network is between apressure upper limit and a pressure lower limit A, pressure of the first spherical tank is between the pressure upper limit and a pressure lower limit B, and the pressure lower limit B is smaller than the pressure lower limit A. According to the metallurgy air separation oxygen supply pipe network system and the operation method thereof, the communication state of the spherical tank and the high-pressure pipe network is controlled, the release range of the spherical tank is expanded, buffer capacity of the spherical tank is improved, depressurization and oxygen reduction of the high-pressurepipe network are achieved, and electricity of a metallurgy industry oxygen plant can be saved by 2.48% to 3.76%.

Description

technical field [0001] The invention relates to the technical field of metallurgical air separation energy saving and consumption reduction, in particular to a metallurgical air separation oxygen supply pipe network system and an operating method thereof. Background technique [0002] The oxygen supply pipe network system is an essential energy medium delivery system for metallurgical enterprises. The metallurgical process of iron and steel needs to consume a large amount of high-purity oxygen, which is mainly used in blast furnace ironmaking and converter steelmaking. Due to the huge amount of oxygen used in the iron and steel metallurgical process, metallurgical enterprises in my country generally have self-provided oxygen plants. There are generally several air separation units in the plant, and the high-purity oxygen produced by them is transported to various oxygen plants throughout the enterprise through the oxygen supply pipe network system. user. Different oxygen us...

AI Technical Summary

Problems solved by technology

[0005] However, the operation of the existing oxygen supply network system has the following disadvantages: the buffer potential of the spherical tank has not been fully utilized

However, as far as the spherical tank itself is concerned, its pressure can vary between 0.1-3.0MPa in essence, that is, its potential release range limit is 2.9MPa

It can be seen that the buffer potential of the spherical tank has not been fully utilized

In addition, the pressure of the high-pressure pipe network on the industrial site generally does not approach the upper pressure limit of 3.0MPa to ensure its absolute safety. Usually, the oxygen is released at about 2.5MPa. At this time, the release range of the spherical tank is only 0.7MPa, and its buffer capacity is further improved. weaken

[0006] In metallurgical enterprises, the phenomenon of excessive pipe network pressure and oxygen release caused by insufficient buffer capacity of the oxygen supply pipe network system is still common, resulting in high energy consumption and release loss of oxygen compression.

Images