Fluidization-suspension combined combustion boiler

A boiler and fluidization technology, which is applied in the field of fluidized-suspension combined combustion boilers to achieve the effects of cost saving, wide adaptability and operating cost savings

Active Publication Date: 2008-10-08
EASTERN BOILER CONTROL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is not much difference in technology from the above-mentioned Russian St. Petersburg Industrial Energy

Method used

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  • Fluidization-suspension combined combustion boiler
  • Fluidization-suspension combined combustion boiler
  • Fluidization-suspension combined combustion boiler

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Embodiment Construction

[0028] Such as figure 1 , 2 As shown, a fluidized-suspension combined combustion boiler includes a vertical combustion chamber arranged in a conventional boiler, and the bottom of the combustion chamber is a bubbling fluidized bed combustion zone 7 and is equipped with a feeder 5, a fluidized bed air duct 4 and Fluidized bed slag outlet 6; the lower part of the combustion chamber (ie above the bubbling bed) is a low-temperature reducing main combustion zone 8, and the upper part of the combustion chamber is a high-temperature oxidative burnout zone 9. The bubbling fluidized bed combustion zone 7 at the bottom of the combustion chamber is a conventional bubbling bed structure: a non-directional cylindrical hood is used to spread the air, and the entire bed is composed of N (N=1~20, depending on the boiler capacity) Each cot is composed of three cots, each cot can independently adjust the air supply and fuel volume, and is equipped with an equal pressure air chamber. Use 0-10m...

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PUM

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Abstract

The present invention provides a liquefaction-suspension combined combustion boiler comprising a vertical combustion chamber arranged in routine boiler, the combustion chamber has a bubble fluidized-bed combustion section equipped with a feeder, fluidized bed slag discharge opening on bottom; the combustion chamber has a low-temperature reducing property main combustion section on lower portion and a high temperature oxidation combustion section on upper portion. The main combustion section on lower part of the combustion chamber comprises a primary air nozzle and auxiliary air ejector nozzle arranged on walls on opposite sides of the combustion chamber for mixture of primary air-fuel entering into the combustion chamber. The high temperature oxidation combustion section on upper portion of the combustion chamber has at least one layer of secondary air nozzle arranged above the primary air nozzle. The primary air-fuel mixture nozzle and the oppositely arranged auxiliary air ejector nozzle form a strong rotation-circulation flow field at lower part of the combustion chamber, which implements combustion of majority of fuel in main low-temperature and reducing property combustion section, uncombusted particle and fuel gas are combusted on upper portion of the combustion chamber. The invention has advantages of high combustion efficiency, low harmful substance discharge, simple structure, safe and reliable operation.

Description

technical field [0001] The invention relates to a combustion combined system using solid fuel, in particular to a fluidized-suspension combined combustion boiler. It is an innovation of traditional fluidized bed combustion and pulverized coal suspension combustion technology to obtain higher combustion efficiency and lower emission levels of harmful substances. Background technique [0002] For a long time, the direct combustion of solid fossil fuels (such as coal, etc.) has been an important factor that has caused serious damage to the environment in our country. At present, except for a few areas, the air pollution in my country is dominated by soot, and the main pollutants are suspended particulate matter (TSP), sulfur dioxide (SO 2 ), nitrogen oxides (NOx), etc. Due to the fact that my country's current coal production and consumption technology level and equipment capacity are difficult to meet the requirements of environmental protection, and the development and appl...

Claims

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Application Information

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IPC IPC(8): F23C10/00F23C10/22
Inventor 阮奕绍朱登瀛
Owner EASTERN BOILER CONTROL CO LTD
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