印度劣质煤燃烧调整试验及分析

分析了东方锅炉自行开发设计的外浓内淡型低NO_x双调风旋流煤粉燃烧器(DBC-OPCC型)的结构特点,针对燃用印度低热值、高灰份的劣质煤,通过进行变氧量、变一次风速、变内外二次风比例、变外二次风旋流强度及流量、变中心风量和变煤量分配等试验,优化了锅炉的运行方式,在提高锅炉效率的同时,解决了锅炉再热器汽温偏差的问题。

The Coal-fired Combustion Adjustment Test and a Brief Analysis of India Inferior Coal

This paper analyses the design features of DBC-OPCC type burner with Nox and swirl pulverized coal burner researchedl, developed and manufactured by DEC. For India inferior coal of low heat value and high ash content, the following combustion adjustment tests are carried out including oxygen content change, primary air speed change of burner, inner and outer sencond air ratio, the outer sencond air swirling intensity changing and air flow of burner, central air flow changing of burner, coal quantity distribution test of different mill, and so on. These tests optimize the operation mode, increases boiler efficiency and solve the difference temperature problem beween RH right and left sides.