Low-nitrogen, efficient and energy-saving high-temperature and high-pressure circulating fluidized bed boiler

A circulating fluidized bed, high-efficiency and energy-saving technology, used in fluidized bed combustion equipment, steam boilers, and molten fuels, etc., can solve problems such as low boiler efficiency, improve thermal efficiency, prevent local wear, and ensure long-term stability. The effect of safe operation

Pending Publication Date: 2021-12-17
江苏汇能重工有限公司
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  • Claims
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Problems solved by technology

[0005] As the country proposes to meet the basic requirements of carbon peaking in 2030, the efficiency of the original sub-high temperature and sub-high pressure circulating fluidized bed boilers is low

Method used

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  • Low-nitrogen, efficient and energy-saving high-temperature and high-pressure circulating fluidized bed boiler
  • Low-nitrogen, efficient and energy-saving high-temperature and high-pressure circulating fluidized bed boiler
  • Low-nitrogen, efficient and energy-saving high-temperature and high-pressure circulating fluidized bed boiler

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Embodiment Construction

[0064] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, which are only used to explain the present invention and do not limit the scope of protection.

[0065] This embodiment provides a low-nitrogen, high-efficiency and energy-saving high-temperature and high-pressure circulating fluidized bed boiler, which optimizes various systems on the original basis (the existing document is CN106838892A), including the boiler main body and steel frame. Economizer system with adjustable exhaust gas temperature, coal feeding system with anti-blocking and anti-reversal, high-efficiency ratio primary and secondary air system, high-efficiency material separation system, anti-blocking air preheater system, ammonia injection and denitrification in the furnace Systems and Operating Systems; References figure 1 , including the furnace 1 as a whole, the seco...

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Abstract

The invention discloses a low-nitrogen, efficient and energy-saving high-temperature and high-pressure circulating fluidized bed boiler which comprises a boiler body and a steel frame. The boiler body internally comprises an economizer system capable of adjusting the exhaust gas temperature, an anti-blocking and anti-reverse-flowing coal feeding system, an efficient-proportioning primary and secondary air system, an efficient material separation system, an anti-blocking air pre-heater system, an in-boiler ammonia injection denitration system and an operation system; an SCR denitration system is arranged in the middle of the economizer system; and the temperature interval adopts an adjustable mode to control the reaction temperature, so that the emission of SO2 can be reduced, the unit station service power consumption rate can be reduced, the heat efficiency of the boiler can be improved, and the long-term stable and safe operation of the boiler can be ensured.

Description

technical field [0001] The invention belongs to the field of boiler equipment, and relates to the transformation of the original boiler pressure level from sub-high temperature and sub-high pressure to high temperature and high pressure circulating fluidized bed boiler, in particular to a high temperature and high pressure circulating fluidized bed boiler with low nitrogen, high efficiency and energy saving. Background technique [0002] Coal is the main energy source in my country, and its main utilization method is coal-fired power generation. Pollutants such as NOx, S02 and soot produced by coal combustion seriously pollute the atmosphere, and NOx and S02 are the main sources of pollution such as acid rain and photochemical smog. With the rapid development of my country's economy, the discharge of pollutants has become more and more serious, which has brought great troubles to the people's living environment. Since September 2014, the National Development and Reform Commi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B31/00F22D1/36F23C10/10F23C10/18F23C10/20F23C10/22F23C10/26
CPCF22B31/0084F22D1/36F23C10/10F23C10/18F23C10/20F23C10/22F23C10/26F23C2206/10
Inventor 蒋俊芳
Owner 江苏汇能重工有限公司
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