Waste incineration and dust removal technology for small domestic waste incinerators

The value in the market has been gradually reflected, in order to solve the problem of domestic waste, the general public is also annoyed, through the incinerator incineration seems to open another window of garbage disposal, so that we are no longer limited to a series of methods that will produce secondary pollution such as garbage filling, let's observe the treatment methods and advantages of this incinerator.

The continuous increase of domestic waste has increasingly become a social development problem of urban development. At this stage, small domestic waste incinerator is the main way to treat domestic waste, but for the incinerator incineration of municipal waste, not only the removal technology of soot, NOX, SOX, HCL in the exhaust gas and the dioxins and heavy metals contained in the gas are very important. In addition, from the viewpoint of environmental pollution prevention efficiency, the heat generated during incineration in garbage incinerators is effectively utilized.

1. Characteristics of gas generated by waste incineration: The gas discharged from the waste incinerator treatment incineration facility contains dust and dioxins, which are clearly stipulated. In order to comply with these regulations, various environmental protection, energy conservation and emission reduction technologies are used in waste incinerator incineration facilities, and in order to reduce NOX, the two-stage combustion method, exhaust gas recirculation method and other technologies are used to control the generation of NOX and denitrification technologies that decompose and reduce NOX by adding atmosphere. The sulfur in the flue gas, usually because the garbage contains less sulfur and the concentration is low, as mentioned later, with the removal of HCL, the removal of acid gas has various methods such as wet, semi-dry, dry, etc., in the wet type, it is absorbed by the alkali, but there is a problem of wastewater treatment due to the corrosion of the absorption liquid, it is difficult to select the material of the device, and there is a problem of wastewater treatment. It is difficult to increase the removal rate of SOX in the dry type, but in the presence of HCL, the injection of slaked lime shows a high desulfurization efficiency. The reaction products produced in the reaction can be recovered in the dust collector at the back.

2. Characteristics of fly ash generated by incinerator incinerator: the concentration of fly ash generated by incineration at the inlet of the dust collector varies with the value of garbage and combustion mode, from a few g/Nm3 to about 20g/Nm3, and the average particle size is about 10~40 μm, but it also contains dust in the sub-micron field, which contains heavy metals and other concentrations in this field, so it is necessary to use electric dust removal or bag dust removal. The specific resistance of the dust generated by the incinerator, which has a great impact on the dust removal efficiency of the electric eliminator, is almost within the applicable range of the electric separator in the range of 108~1011Ω.cm. Generally, in terms of the specific resistance of dust, it is easier to use the electrostatic precipitator as the applicable object of dust removal.