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A device and method for rapid load change of air separation oxygen

A technology of air separation and variable load, applied in liquefaction, coagulation, lighting and heating equipment, etc., to achieve the effect of reducing floor space, simplifying the process and reducing the difficulty of operation

Active Publication Date: 2017-12-22
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is a big gap in meeting the emergency needs of the production process

Method used

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  • A device and method for rapid load change of air separation oxygen

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 Shown, a kind of device and method of air separation oxygen load changing rapidly, comprise the following steps, the connection of each part in the device is also shown clearly as shown in flow process:

[0023] 1. After the air is filtered by the filter 1, it enters the compressor 2 and is compressed to about 0.5MPa. The compressed air passes through the air cooling tower 4 and is sprayed and cooled by cooling water to about 15°C. The compressed air K1 from the air cooling tower 4 passes through the program-controlled valve Enter one of the two molecular sieves 5 (the other molecular sieve is regenerated) to remove moisture and carbon dioxide in the air, and the clean air is divided into two paths; one path of air K2 passes through the main heat exchanger 11 to exchange oxygen, nitrogen, and dirty nitrogen. After being c...

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Abstract

The invention discloses a device and method for rapidly changing loads of air separation and oxygen. The naked liquid oxygen tank is placed in the cold box, and the liquid oxygen water bath vaporizer is placed at the bottom of the water cooling tower. The bottom outlet of the oxygen bare tank leads to the cold box and is divided into two paths, one is the interface for liquid oxygen output or input, and the other goes to the liquid oxygen water bath vaporizer at the bottom of the water cooling tower, where the liquid oxygen is vaporized into a gas phase and sent to On the pipeline after the oxygen take-off valve of the full low-pressure air separation unit.

Description

technical field [0001] The invention belongs to the field of oxygen supply equipment for steelmaking, in particular to a device and method for rapidly changing loads of air separation and oxygen. Background technique [0002] With the diversification and refinement of chemical production, the requirements for oxygen supply are more variable and stricter in order to reduce the cost of oxygen. Especially in steelmaking enterprises, due to the more prominent contradiction between intermittent oxygen use in steelmaking and continuous oxygen supply by air separation, how to reduce the amount of oxygen released, maintain a balance between supply and demand, and achieve economical operation of air separation units has attracted much attention. This has prompted air separation plant manufacturers to develop "variable load" air separation plants. At present, there are two ways to change the load, one is the automatic load change of the liquid oxygen and liquid nitrogen periodic back...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25J3/04
Inventor 常兴路
Owner CHINA PETROLEUM & CHEM CORP