Energy-saving start method of oxygen generator

A start-up method and oxygen generator technology, applied in the direction of oxygen preparation, sustainable manufacturing/processing, climate sustainability, etc., can solve the problems of high cost, long time, low work efficiency, etc., to save electricity consumption costs, save electricity The effect of saving energy consumption and saving maintenance time

Inactive Publication Date: 2009-05-13
ANYANG IRON & STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Traditional start-up method takes a long time, low work efficiency and high cost

Method used

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  • Energy-saving start method of oxygen generator
  • Energy-saving start method of oxygen generator

Examples

Experimental program
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Effect test

Embodiment 1

[0026] It can be seen from Figure 1 that the first use of low-pressure nitrogen in the pipe network to heat and purge the air separation system is equivalent to shortening the start-up time of the oxygen generator by about 36 hours.

[0027] The pressure of the low-pressure nitrogen pipe network is about 0.73MPa, and the 2#23500 oxygen generator starts to use low-pressure nitrogen to heat the air separation system.

[0028] Nitrogen in the low-pressure pipe network enters the molecular sieve flow path from the upper tower C2 to fill the upper tower C2. The specific flow path is: low-pressure nitrogen in the pipe network→low-pressure nitrogen into the sewage nitrogen system stop valve V18 and pressure reducing valve V19→V16 (contaminated nitrogen is removed Molecular sieve purification system) → upper tower C2 and argon system → V1 (lower tower C1 liquid air enters upper tower C2 regulating valve), V2 (lower tower C1 liquid nitrogen enters upper tower C2 regulating valve) → lowe...

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Abstract

The invention discloses an energy-saving starting method for an oxygen producing machine, wherein the method comprises the following steps: a, sweeping of a space division system; b, accumulation of liquid air of the space division system; and c, starting of an oxygen producing machine, wherein during the sweeping of a space division system in step a, the heating and the sweeping of the space division system are performed by adopting low pressure nitrogen in a pipe network; during the accumulation of liquid air of the space division system in step B, the expansion and the refrigeration of the space division system are performed by adopting the low pressure nitrogen in the pipe network; the starting of the oxygen producing machine in step c includes the starting of an air compression system, an air precooling system and a molecular sieve system; in step b, after a main condenser of a space division column reaches air liquefaction temperature, loxygen discharged by the main condenser is reversely charged into the main condenser before stoppage, so that the liquid level of the main condenser reaches a liquid level required at the step of adjusting purify; and in step b, the expanded nitrogen entering the space division system is repeatedly pumped, pressed and recycled. An air compressor does not start, and the sweeping of the space division system is performed by utilizing the nitrogen in the pipe network; the time and the energy consumption of the sweeping of the space division system are saved; the starting time of space division is greatly shortened; the power consumption is saved; and the commissioning time is shortened.

Description

Technical field: [0001] The invention relates to the field of starting methods of an oxygen generator, in particular to an energy-saving starting method for an oxygen generator. Background technique: [0002] Air is a mixed gas. The working purpose of the oxygen generator is to separate the raw material air into relatively high-purity oxygen, nitrogen, argon and other product gases through physical low-temperature rectification in a low-temperature environment. [0003] The oxygen generator is mainly composed of the following systems: air compressor system (to provide raw compressed air for the normal operation of the oxygen generator, and to provide raw air during the purging and heating stage); air pre-cooling system (to reduce the outlet air temperature of the air compressor) ); molecular sieve system (to remove moisture and carbon dioxide impurities in the air); expander system (to expand air to generate cold energy, so that the air separation plant can generate cold ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B13/02
CPCY02P20/10
Inventor 王林平张永康张晨侯志勇高晓宁付晓敏冯明义
Owner ANYANG IRON & STEEL
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