当前位置: Home / Faq / Large air separation FAQ /

What are the requirements for oxygen produced by air separation unit in steelmaking production

What are the requirements for oxygen produced by air separation unit in steelmaking production
Mar 29, 2021
Author: DEAR AST

1、 In converter steelmaking, the oxygen consumption per ton of steel is 48-58m3 / T, and the oxygen content is required to be greater than 99% of high purity oxygen; at the same time, the pressure is also required, and the working pressure is required to be greater than 1.3MPa.

 

2、 Blast furnace oxygen enriched blast: blast furnace oxygen enriched blast is to add industrial oxygen into blast furnace blast, so that the oxygen content in blast exceeds the atmospheric content. When the amount of coal injection per ton of iron reaches 200KG, the oxygen content of blast is required to be 25% ~ 29%. Increasing the oxygen content in blast furnace blast can increase the injection amount of pulverized coal and the output of pig iron. The oxygen content in blast can be increased by 1%, the output of pig iron can be increased by 3%, and the injection amount of coal per ton of iron can be increased by 13KG. At present, the oxygen content is generally 23% - 25%, and the highest is 27%. The blast volume of blast furnace is very large, and 12000m3 air is needed for each ton of iron. Although the oxygen enrichment degree is not high, the oxygen consumption is also quite large. The oxygen content per ton of iron needs to be increased by 1-16%. Although there is no special requirement for oxygen purity in ironmaking, if a separate oxygen generation system is specially configured for ironmaking, it can not mix with the oxygen for steelmaking, so it is still supplied by the high purity oxygen system. Oxygen is generally inhaled from the blower inlet, so there is no requirement for oxygen pressure.

 

3、 Smelting reduction ironmaking: oxygen is blown into the smelting gasifier to make coal burn and decompose. It is used to reduce iron ore with coal. The purity of oxygen is required to be more than 95%, and the oxygen consumption per ton of iron is 500-550m3 / T

DEAR Air Separation Solve YourWhat are the requirements for oxygen produced by air separation unit in steelmaking productionYou can also learn about otherLarge air separation FAQ about DEAR Air Separation, and solve the problem for you.
Didn’t find the problem encountered?
Please contact live chat or email for quick help.
Related FAQ
More Related FAQ
Why do the design, installation, and production of complete sets of air separation equipment require various parameters from the demand side?
2024.11.14
The classical single column process is the first one to be used in industrial application. However, there are many disadvantages in the classical single column process. One is that oxygen and nitrogen cannot be produced simultaneously, and the other is that the oxygen extraction rate can only reach about 70%. There are two improvement schemes to solve the defects of classical single column process. One is the curren...
2024.11.13
Need more information?
Contact us for more details about our air separation equipment, solutions and services.
Products
  • Large air separation
  • Small air separation
  • High purity nitrogen air separation
  • Liquefaction air separation
  • Complete air separation
  • Biogas purification
  • Air separation parts
Need more information?
Tel:+86-19837850537
© Kaifeng DEAR Air Separation Industry Co., Ltd.. All rights reserved.
Online
Inquiry
Email
Top