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Energy-saving and emission-reducing sintering machine flue gas circulation method and system

A technology of circulation system and flue gas circulation, which is applied in the maintenance of heating chamber, waste heat treatment, furnace control device, etc., and can solve problems such as overhumidity

Pending Publication Date: 2021-05-18
中国冶金矿业鞍山冶金设计研究院有限责任公司
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Problems solved by technology

However, the temperature at the head of the sintering machine is low, so there is often excessive humidity

Method used

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  • Energy-saving and emission-reducing sintering machine flue gas circulation method and system
  • Energy-saving and emission-reducing sintering machine flue gas circulation method and system
  • Energy-saving and emission-reducing sintering machine flue gas circulation method and system

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Embodiment Construction

[0025] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0026] A sintering machine flue gas circulation method for energy saving and emission reduction. The sintering machine flue gas circulation system is divided into a hot section flue gas circulation system I and a cold section flue gas circulation system II; the hot section flue gas circulation system I is used to recycle the sintering machine The high-temperature and high-oxygen flue gas at the tail is drawn out, and after dust removal, it is sent to the hot section flue gas hood 2 of the machine head, so that the flue gas enters the material layer of the sintering machine, reduces the consumption of solid fuel through heat input, and improves the quality of the surface sinter; The cold-section flue gas circulation system II is used to discharge the low-temperature and low-oxygen flue gas from the head of the sintering machine, and send it to the c...

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Abstract

The invention relates to an energy-saving and emission-reducing sintering machine flue gas circulation method and system. The sintering machine flue gas circulation system is divided into a hot section flue gas circulation system and a cold section flue gas circulation system. The hot section flue gas circulation system is used for leading out high-temperature and high-oxygen flue gas at a machine tail of a sintering machine, and feeding the flue gas into a hot section flue gas cover at a machine head after dust removal; and the cold section flue gas circulation system is used for leading out low-temperature and low-oxygen flue gas at the machine head of the sintering machine, and sending the flue gas into a cold section flue gas cover at the machine tail after dust removal. According to the energy-saving and emission-reducing sintering machine flue gas circulation method and system provided by the invention, a flue gas segmented internal circulation mode is adopted, so that gradient utilization of sintering flue gas is realized; and flue gas waste heat is fully utilized, so that energy consumption in the sintering process is saved, emission of organic pollutants such as NOx, dioxin, carbon monoxide and the like is remarkably reduced, and the purposes of energy conservation and emission reduction are realized.

Description

technical field [0001] The invention relates to the technical field of sintering machine flue gas treatment, in particular to a sintering machine flue gas circulation method and system for energy saving and emission reduction. Background technique [0002] Sintering is to place various powdered iron-containing raw materials, mixed suitable fuels and fluxes in sintering equipment to ignite and sinter, and under the action of high heat generated by the fuel and a series of physical and chemical changes, the surface of part of the mixture particles is softened and melted , produce a certain amount of liquid phase, and wet other unmelted ore particles, when cooled, the liquid phase sinters the ore powder particles into sintered ore, and sintering is an important process in the ironmaking industry. [0003] The sintering flue gas is the dust-containing waste gas generated during the high-temperature sintering molding process after the sintering mixture is ignited and runs with th...

Claims

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Application Information

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IPC IPC(8): F27D17/00F27D7/04F27D19/00B01D49/00
CPCB01D49/00F27D7/04F27D17/004F27D17/008F27D19/00F27D2019/0009F27D2019/0021F27M2003/04
Inventor 王靖文王之政刘铭安孙琦王占锋
Owner 中国冶金矿业鞍山冶金设计研究院有限责任公司
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