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天津化纤厂重整加热炉是从日本日挥公司引进的,其中H-201、H-202两台纯辐射圆筒炉原设计热负荷各为244及256万千卡/时。节能改造前,当两炉负荷达到设计值的95%时,就出现了炉顶烟道气超温现象(火墙度温原设计为960℃,实际为1020～1030℃,有时高达1090℃),超过了炉衬使用温度应不高于1000℃的规定。炉顶有部分衬里剥落,烟道挡板变形卡住,炉外壁温度偏高,散热损失增大,炉管上部有氧化起皮现象,由于火墙温度超高,故炉子本体实际热效率只有44～45%(原设计为50%)。这两台炉子的负荷能力不能满足增产聚脂原料的要求。为此由天津化纤厂提出,经石化总公司批准,由北京设计院承担了这两台炉子的改造设计任务。经过现场调查,分析比较,
Tianjin Chemical Fiber Factory reformer furnace is introduced from Japan’s Japanese wave company, which H-201, H-202 two pure radiation cylindrical furnace original design heat load of 244 and 256 million kcal / h. Before the energy-saving retrofit, when the load of the two furnaces reached 95% of the design value, the overfire of the roof flue gas appeared (the thermal wall temperature was designed to be 960 ℃, actually 1020 ~ 1030 ℃ and sometimes up to 1090 ℃) Over the lining temperature should not exceed 1000 ℃ regulations. Some of the top of the furnace roof flaking, flue baffle deformation stuck, the outer wall of the furnace temperature is too high, heat loss increases, the upper part of the tube has oxidation peeling phenomenon, due to the fire wall temperature is high, so the actual thermal efficiency of the furnace body is only 44 ~ 45 % (Originally designed to 50%). The load capacity of these two furnaces can not meet the requirements for increasing the production of polyester raw materials. To this end proposed by the Tianjin Chemical Fiber Factory, approved by the Petrochemical Corporation, Beijing Design Institute assumed the transformation of these two stove design task. After field investigation, analysis and comparison,