Oxygen production equipment, and method and smelting equipment for producing oxygen by using same
Oxygen production equipment and separation oxygen production technology, applied in the field of methods, smelting equipment, and oxygen production equipment, can solve the problems of high cost of air separation unit, high cost of compressed oxygen, limitation of the use of pulverized coal injection technology, etc., and achieve energy consumption Low cost and less investment
Active Publication Date: 2020-09-11
SHEN KAN QINHUANGDAO GENERAL ENG DESIGN & RES INST CORP MCC
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Problems solved by technology
Due to the limitation of oxygen used in steelmaking and smelting, a large amount of oxygen cannot be provided, and it is difficult to achieve 20% oxygen-enriched content in domestic blast furnace ironmaking, which greatly limits the use of large-scale pulverized coal injection technology in blast furnaces
However, if an air separation unit is specially built for blast furnace oxygen enrichment, there are problems such as high cost of air separation unit, high cost of oxygen production and oxygen compression
Method used
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[0039] Such as figure 1 As shown, the present embodiment provides a kind of oxygen production equipment, including air compressor, cryogenic air separation oxygen production system and PSA oxygen-enriched air system; cryogenic air separation oxygen production system and PSA oxygen-enriched air system The system communicates with the air compressors respectively.
[0040] Such as figure 2 As shown, in a preferred embodiment, the cryogenic air separation oxygen production system includes a nitrogen water precooling device, a molecular sieve purification device, an air separation device and a storage pressure regulating device connected in sequence; the oxygen-enriched air system by pressure swing adsorption includes Two adsorption towers. The nitrogen water precooling device adopts an air cooling tower, and the molecular sieve purification device adopts a molecular sieve adsorber.
[0041] In order to ensure the cleanliness of the air entering the equipment, in a preferred e...
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The invention provides oxygen production equipment, and a method and smelting equipment for producing oxygen by using the oxygen production equipment. The oxygen production equipment comprises: an aircompressor, a cryogenic air separation oxygen production system used for obtaining high-purity gas and a pressure swing adsorption oxygen-enriched air production system used for obtaining oxygen-enriched air. The method for producing oxygen by using the oxygen production equipment comprises the following steps: after air enters the air compressor to be compressed, a part of air enters the cryogenic air separation oxygen production system, and the rest part enters the pressure swing adsorption oxygen-enriched air production system; compressed air entering the cryogenic air separation oxygen generation system is fed into the nitrogen-water pre-cooling device to be pre-cooled, then fed into the molecular sieve purification device to be purified and finally fed into the air separation deviceto obtain liquid oxygen; the compressed air entering the pressure swing adsorption oxygen-enriched air preparation system is fed into an adsorption tower, and oxygen-enriched air is obtained through adsorption treatment; and the smelting equipment comprises oxygen production equipment. According to the oxygen production equipment and the oxygen production method using the same, high-purity oxygenand oxygen-enriched air can be provided at the same time, energy conservation and emission reduction are achieved, and economic benefits are good.
Description
technical field [0001] The invention relates to the field of metal smelting, in particular to an oxygen production equipment, a method for producing oxygen using the same, and a smelting equipment. Background technique [0002] Oxygen for steelmaking (converter, electric furnace) smelting and oxygen-enriched blast for ironmaking blast furnace systems are all provided by the air separation station of the oxygen station. Cryogenic air separation unit production 1m 3 Oxygen power index: 0.55-0.6KW h / m 3 . The oxygen used in the oxygen-enriched blast system of the ironmaking blast furnace is provided by the remainder of the oxygen used in steelmaking and smelting, with an oxygen content of 1-3%, and the oxygen-enriched blast air in the ironmaking blast furnace contains a certain amount of moisture. Due to the limitation of oxygen used in steelmaking and smelting, a large amount of oxygen cannot be provided, and it is difficult to achieve 20% oxygen-enriched content in domesti...
Claims
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IPC IPC(8): C01B13/02C21B5/00
CPCC01B13/0262C21B5/003
Inventor 吴绍刚荀凤超王继州黄敏武脡鹰李伟张乐双刘洋潘静李卫刚赵运廷路杰
Owner SHEN KAN QINHUANGDAO GENERAL ENG DESIGN & RES INST CORP MCC