High efficiency circulating fluidized bed coal fired boiler coal economizer

A circulating fluidized bed and coal-fired boiler technology, which is applied to fluidized bed combustion equipment, steam boilers, fuels burned in a molten state, etc., can solve the problems of non-compliance with environmental protection indicators and high NOx emissions, so as to reduce the acquisition rate and increase Combustion area and the effect of improving production efficiency

Active Publication Date: 2016-12-21
江苏汇能重工有限公司
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Problems solved by technology

However, the existing 75t / h circulating fluidized bed coal-fired boiler has problems such as high NOx emissions after the boiler is put into operation, which does not meet the relevant environmental protection indicators and requirements, so it needs to be improved

Method used

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  • High efficiency circulating fluidized bed coal fired boiler coal economizer
  • High efficiency circulating fluidized bed coal fired boiler coal economizer
  • High efficiency circulating fluidized bed coal fired boiler coal economizer

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Embodiment Construction

[0024] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments, which are only used to explain the present invention and do not limit the protection scope of the present invention.

[0025] High-efficiency circulating fluidized bed coal-fired boiler economizer, such as figure 1 As shown, it includes the upper economizer 1, the SCR catalyst structure 2 and the lower economizer 3 connected in the boiler from top to bottom, and the upper economizer 1 includes the upper economizer outlet header arranged in sequence from top to bottom 11. The upper membrane economizer pipe 12 and the upper economizer inlet header 13, and the lower economizer 3 respectively include the lower economizer outlet header 31 and the lower membrane economizer pipe 32 arranged in sequence from top to bottom and the inlet header 33 of the lower-level economizer; the inlet header 13 of th...

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Abstract

The invention discloses a high efficiency circulating fluidized bed coal fired boiler coal economizer, which consists of an upper level coal saver, a SCR catalyst structure and a lower level coal saver that are connected from top down in a boiler. The upper level coal saver includes an upper level coal saver outlet connection box, an upper membrane type coal economizer pipe and an upper level coal saver inlet connection box. The lower level coal saver consists of a lower level coal saver outlet connection box, a lower membrane type coal economizer pipe and a lower level coal saver inlet connection box. The upper level coal saver outlet connection box is connected to a waterway of the lower level coal saver outlet connection box through a pipeline 1 and a pipeline 2. A height position of the SCR catalyst structure in the coal economizer is also provided with a denitration area inspection door bended pipe, wall enclosure pipe pieces are disposed around the denitration area inspection door bended pipe, several soot blowing bended pipes and several measure point bended pipes are arranged between the wall enclosure pipe pieces and the denitration area inspection door bended pipe. The coal economizer provided by the invention reduces the Nox emission of the boiler, reduces environmental pollution, has high environmental protection performance, and improves the production efficiency.

Description

technical field [0001] The invention relates to the technical field of an economizer for a 75t / h circulating fluidized bed coal-fired boiler, in particular to an economizer for a high-efficiency circulating fluidized bed coal-fired boiler. Background technique [0002] Circulating fluidized bed boiler technology is a high-efficiency, low-pollution and clean combustion technology that has developed rapidly in the past ten years. Internationally, this technology has been widely used commercially in the fields of power station boilers, industrial boilers and waste treatment and utilization, and is developing towards large-scale circulating fluidized bed boilers with a scale of hundreds of thousands of kilowatts; domestic research and development in this area And applications are also gradually emerging, and hundreds of circulating fluidized bed boilers have been put into operation or are being manufactured. [0003] The boiler adopts a single drum and natural circulation mode,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/18F22D1/00F22B31/08
CPCF22B31/08F22D1/003F23C10/18
Inventor 陈伟陈云龙
Owner 江苏汇能重工有限公司
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