Air burning method in low oxygen and high temperature, and equipment

A technology of high-temperature air and combustion method, which is applied in the direction of combustion method, combustion equipment, indirect carbon dioxide emission reduction, etc., and can solve the problems of not paying attention to the importance of airflow organization, easy burning of four-way reversing valve, unstable combustion flame, etc. , to achieve the effect of reliable performance, stable pressure and stable heat transfer

Inactive Publication Date: 2007-05-09
CENT SOUTH UNIV
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AI Technical Summary

Problems solved by technology

[0008] Rapid switching leads to unstable combustion flame and heat transfer in the furnace
The four-way reversing valve is easy to burn and needs high-pressure air source
Most industrial furnaces do not pay attention to the importance of optimizing the air distribution in the furnace

Method used

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  • Air burning method in low oxygen and high temperature, and equipment
  • Air burning method in low oxygen and high temperature, and equipment

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Embodiment Construction

[0023] As shown in Figure 1, the invention is mainly composed of a high-efficiency partition wall heat exchanger 1, a ceramic check valve 2, a gas pipe 3, a furnace 4, a combustion air pipe 11, a flue gas discharge pipe 12, a cooling pipe 5 and a flue gas flow regulating valve 6 , the furnace 4 is provided with a cooling pipe 5, a gas pipe 3 and a flue gas discharge pipe 12, the combustion air pipe 11 communicates with the furnace 4 after passing through the high-efficiency partition heat exchanger 1, and the flue gas discharge pipe 12 of the furnace 4 passes through a high-efficiency The partition heat exchanger 1 is also provided with a flue gas flow regulating valve 6, and a flue gas discharge pipe 12 is provided between the combustion air pipe 11 and the flue gas discharge pipe 12 between the furnace 4 and the high-efficiency partition heat exchanger 1. Check valve 2 to combustion air line 11.

[0024]Referring to Figure 1, fresh air enters the high-efficiency partition wa...

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Abstract

A method for burning low oxygen and high temperature air includes entering air into recuperative heat exchanger to be preheated, mixing it with high temperature smoke sent from ceramic check valve to form it to be low oxygen high temperature air being sent into firepot, carrying out volume-form combustion being able to be controlled at firepot, exhausting partial smoke out to ambient through smoke flow rate regulation valve after sensible heat of smoke is released at heat exchanger.

Description

technical field [0001] The invention relates to a high-efficiency energy-saving and extremely low NO x The low-oxygen high-temperature air combustion method for emission, the invention also includes a device for realizing the combustion method. technical background [0002] Energy is an important resource indispensable to human life. The energy consumption of my country's industrial sector accounts for more than 70% of the country's total energy consumption, and the energy consumed by various industrial furnaces accounts for about one-third of it. If the thermal efficiency of industrial furnaces in the country is increased by 10% on average, it is equivalent to saving 100 million tons of standard coal. In order to improve thermal efficiency, the usual practice is to increase the preheating temperature of the combustion air and use oxygen-enriched (or even pure oxygen) combustion. But these conventional means will cause NO x increase in emissions. On the other hand, peop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C9/08F23L15/00
CPCY02E20/34
Inventor 艾元方蒋绍坚蒋受宝孙英文张灿韦启告陈玉琴黄文静
Owner CENT SOUTH UNIV
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