| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.8 ( September 1983 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Improvement in Off-Gas Recovery from Q-BOP Hajime Bada, Sumio Yamada, Motoyasu Yaji, Fumio Sudo, Mikio Kodaka |
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Synopsis : No.3 Steelmaking Shop at Chiba Works has two 230t Q-BOPs for the first time in Japan, which are equipped with OG system as off-gas cleaning equipment, and consequently off-gas energy from Q-BOPs is recovered effectively as fuel for power plant. To increase energy recovery, it is effective to reduce combustion ratio of off-gas from Q-BOPs. Chiba's Q-BOPs have decreased the combustion ratio from 5% to 2 or 3% by means of improvement of sealing between furnace and skirt hood. Then, the recovery time of off-gas from Q-BOPs has been extended and the reliability of gas sampler and gas analyzer has been improved. Consequently, the amount of energy recovered from off-gas has increased to about 270 x 10 3 kcal/t. Q-BOP has shown additional advantage of CO gas recovery by injecting limestone powder through the bottom tuyeres. |
| TextiPDF: 6p./272kbj |