Curtain wall structure circulating fluidized bed boiler

Abstract

The invention relates to a circulating fluidized bed boiler with a partition wall structure, which can significantly improve the air distribution of the furnace and the combustion conditions inside the furnace, and improve the efficiency of the boiler; and solve the problem of the pressure difference between the two bed surfaces of the double-leg structure during operation. It solves the problem of uniformity and solves the problem of difficult layout of the heating surface of large-scale CFB boilers. The present invention includes a furnace air distribution plate, a combustion chamber surrounded by the side of the furnace and the furnace roof, and its special feature is that a partition wall is arranged in the dense phase area of ​​the combustion chamber, and the partition wall can be a partition that runs through the entire combustion chamber as a whole. The wall and the bed surface of the hearth are two parts that are not connected to each other. The partition wall can also be two or more semi-partition walls. The bed surface of the hearth can be a whole, and the upper part of the partition wall is arranged with a heating surface.

Description

1. Technical field: [0001] The invention relates to a boiler, in particular to a circulating fluidized bed boiler with a partition wall structure. 2. Background technology: [0002] CFB boiler technology is a world-recognized clean coal combustion technology. It has wide adaptability to coal types, realizes desulfurization and low NOx emissions in the furnace, and has a simple process. It has been widely used in the past two decades and is increasingly large-scale. develop. [0003] Foreign CFB boilers have been developed for a long time and the technology is relatively mature. my country's research and development of large-scale CFB boilers is close to the world level but relatively backward. The production technology of large-scale CFB boilers is almost entirely imported. At present, my country's three major boiler factories: Shanghai Boiler Factory, Dongfang Boiler Factory, and Harbin Boiler Factory have introduced the manufacturing technology of CFB boilers with 135MW a...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the deficiencies in the above-mentioned background technology, the present invention provides a circulating fluidized bed boiler with a partition wall structure, which can significantly improve the air distribution of the furnace and the combustion conditions inside the furnace, improve the efficiency of the boiler; and solve the problems in the operation process. The problem of uneven pressure on the two bed surfaces of the double-leg structure and the problem of solving the problem of difficult layout of the heating surface of large-scale CFB boilers

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