Garbage incinerator with double grates

Abstract

The invention discloses a garbage incinerator. The garbage incinerator comprises an incinerator body (11), a garbage feeding hopper (1), an incinerator grate and a flue gas outlet (14); the incinerator grate is composed of a stepped fire grate (5) and a rotary fire grate (6), wherein the rotary fire grate (6) is positioned at the bottom part of the incinerator body, and the stepped fire grate (5)is positioned on one side of the portion, above the rotary fire grate, of the incinerator body; the garbage feeding hopper (1) is positioned above the stepped fire grate, and the part, above the rotary fire grate, of the cavity of the incinerator body (11) is provided with a primary combustion chamber (9) and a secondary combustion chamber (10) from bottom to top; and a retaining wall (12) is arranged between the stepped fire grate (5) and the secondary combustion chamber (10), and gaps are reserved between the retaining wall (12) and the stepped fire grate (5) and between the retaining wall (12) and the inner wall of the portion, above the retaining wall (12), of the incinerator body. The garbage incinerator has the advantages that incineration cost can be reduced, the incineration efficiency is improved, and the garbage incinerator is particularly suitable for incinerating garbage with the high water content and the low garbage heat value.

Description

technical field [0001] The invention relates to a garbage incinerator, in particular to a double-grate garbage incinerator, which is suitable for burning garbage with high moisture content and low garbage calorific value. Background technique [0002] In garbage incineration, the high moisture content of garbage (especially municipal solid waste) will affect the efficiency and effect of garbage incineration. In order to reduce the moisture content of garbage with high moisture content in the prior art, garbage drying equipment is added in front of the incinerator. For example, a rotary kiln is used to dry garbage, but this will increase equipment costs and management costs. In addition, the existing garbage incinerators do not stir the garbage during incineration, which makes the garbage heated unevenly, resulting in insufficient combustion (even garbage with low calorific value and easy to burn cannot be fully burned), and the incineration efficiency low. Contents of the...

AI Technical Summary

Problems solved by technology

[0002] In garbage incineration, the high moisture content of garbage (especially municipal solid waste) will affect the efficiency and effect of garbage incineration. In order to reduce the moisture content of garbage with high moisture content in the prior art, garbage drying equipment is added in front of the incinerator. For example, use a rotary kiln to dry garbage, but this will increase equipment costs and management costs

In addition, the existing garbage incinerators do not stir the garbage during incineration, which makes the garbage heated unevenly, resulting in insufficient combustion (even garbage with low calorific value and easy to burn cannot be fully burned), and the incineration efficiency low

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