Air distributing device and method for household rubbish incinerating furnace

Abstract

The invention relates to the field of household rubbish incinerating processing, in particular to an air distribution device for a rubbish incinerating furnace. The air distribution device is suitable for severely-cold environment regions. A rubbish pit is connected with a fan through a pipe, an adjustment stop plate ventilation door A is arranged in an inlet of the fan, an outlet of the fan is connected with an air pre-heater and an adjustment stop plate ventilation door D in parallel and then respectively connected with a drying furnace air discharging chamber, a combustion furnace air discharging chamber and an after-combustion furnace air discharging chamber of the three-section-type household rubbish incinerating grate furnace through a direct-type air pre-heater, an inlet and an outlet of the air pre-heater are provided with an adjustment stop plate ventilation door B and an adjustment stop plate ventilation door C respectively, and an adjustment stop plate ventilation door E, a direct-type air pre-heater fan and a fuel system are connected to the direct-type air pre-heater. According to the air distribution device, an improvement is carried out on the basis of a conventional air distribution device of the three-section type grate furnace; as the direct-type air pre-heater is additionally arranged, the temperature of combustion air is raised, air distribution of three-section grates is improved, the air inlet amount of the drying-section grate is increased, the air pressure of an inlet of the incinerating furnace is increased, the incinerating furnace can adapt to the characters of rubbish in the severely-cold environment regions, and the intra-incinerating-furnace rubbish combustion effect is improved.

Description

technical field [0001] The invention relates to the field of domestic garbage incineration treatment, in particular to an air distribution device and an air distribution method for garbage incinerators in areas with severe cold environments. Background technique [0002] Incineration is one of the waste disposal technologies widely adopted in the world at present. In recent years, with economic growth and people's higher and higher requirements for environmental quality, a number of standardized waste incineration power plants have been built in China and put into use one after another. [0003] For example, the subject that the applicant has applied for is "A Mechanical Grate for Large Incinerator", publication number CN102519043A. The structure of a three-stage domestic waste incineration grate furnace is disclosed, including a drying furnace, a combustion furnace and a burnout furnace. [0004] However, there are certain defects in the incineration treatment of domestic...

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Problems solved by technology

[0004] However, there are certain defects in the incineration treatment of domestic waste in severe cold environment areas such as Northeast China. The waste generally has the characteristics of high moisture content and large amount of ash, and even when it contains ice, it is burned in the furnace, which seriously affects the incineration. Furnace combustion conditions, affecting economic and environmental benefits

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