对韶钢 3200m 3 高炉风温的研究.pdfVIP

对韶钢3200m3 高炉风温的研究 ·1 · 对韶钢 3200m3 高炉风温的研究 杨国新 陈国忠 钟树周 （宝钢集团韶关钢铁炼铁厂，广东韶关 512123 ） 摘 要 通过对比韶钢 8 号高炉与宝钢高炉的热风炉结构、烧炉烟气理论燃烧温度包括煤气发热值、预热器预热效 果的差异，富氧烧炉等其他影响风温因素的查找，得出热风炉结构的差异是影响风温水平的决定性因素，宝钢新日 铁外燃式热风炉对比 8 号高炉的内燃式热风炉在燃烧能力、风温水平上具有先天性优势。在假设同样掺烧 4.5% 的 焦炉煤气的条件下，由于宝钢高炉煤气热值高，预热效果好，助燃空气和煤气带入的物理热量高，经计算其理论燃 烧温度、拱顶温度和风温均高出 8 号高炉约 70℃。根据对韶钢 8 号高炉开炉以来风温的研判和不同烧炉条件下风 温的推算，得出可通过提高焦炉煤气的掺烧比例至 6%，提高助燃空气、煤气预热温度至 160℃和进行富氧烧炉工 艺等可将 8 号高炉的风温水平提高到 1190℃水平。 关键词 高炉, 热风炉, 风温 3 3200m of Shaoguan Steel Blast Furnace Blast Temperature Research Yang Guoxin, Chen Guozhong, Zhong Shuzhou (Baosteel Shaoguan Steel Ironworks Shaoguan City, Shaoguan 512123, China) Abstract Stove in contrast Shaoguan Steel blast furnace No.8 with Baosteel blast furnace, burning furnace flue theoretical combustion temperature, including locating gas calorific value, the difference preheater effect, oxygen-enriched air burning furnace temperature impact and other factors, differences draw stove structure is the decisive factor affecting the level of air temperature, BNA external combustion stove contrast on the 8th of internal combustion type hot blast furnace with a capacity of innate advantages in combustion air temperature level. Under the assumption that the same blending 4.5% of coke oven gas conditions, due to BFG calorific value, good warm-up effect, the physical heat combustion air and gas into the high combustion temperature calculated theoretical temperature, vault temperature and air temperature were higher than the 8th blast about 70 ℃. According to the Shaoguan Steel since No.8 bl