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介绍一种“八五”攻关新开发的循环流化床煤气-蒸汽联产炉工艺、试验结果及设计特点。它生产蒸汽及中热值煤气。煤气可供工业生产用也可民用。 联产炉工艺是在循环流化床燃烧锅炉基础上发展起来的。它有一个流化床燃烧室和一个热解室。燃烧室和热解室之间有热物料循环,并组成有机整体。煤在进入燃烧室之前先经热解室热解气化、产生煤气,剩余的半焦进入燃烧室燃烬。由于采用循环流化床燃烧技术,因而其燃烧效率可>98％。煤气化所需热量由循环热物料提供、热解过程不需氧气和空气,因而,有较高煤气热值和转换效率、热效率。 介绍一台10t/h蒸汽产量的工业用煤气-蒸汽联产炉工艺及其预测结果;还介绍一台35t/h蒸汽产量的联产炉设计方案及其预测结果。
This paper introduces a newly developed circulating fluidized bed gas-steam co-fired furnace technology, experimental results and design features in the “Eighth Five-Year Plan”. It produces steam and medium heat value gas. Gas for industrial use can also be civilian. Co-firing furnace process is based on circulating fluidized bed combustion boilers developed. It has a fluidized bed combustion chamber and a pyrolysis chamber. There is hot material circulation between the combustion chamber and the pyrolysis chamber and the organic whole. Before entering the combustion chamber, coal pyrolyzed and gasified by the pyrolysis chamber to produce gas, and the remaining semi-coke enters the combustion chamber to burn ash. Due to the use of CFB combustion technology, its combustion efficiency can be> 98%. The heat required for coal gasification is provided by the circulating heat material, which does not require oxygen and air for the pyrolysis process, thus resulting in higher gas calorific value, conversion efficiency, and thermal efficiency. A 10t / h steam production of industrial gas - steam co-production furnace technology and its prediction results are also introduced. A 35t / h steam production co-production furnace design and its prediction results are also introduced.