Technical introduction
Garbage incineration rotary kiln is a mature technology. If garbage to be dealt with contains much matters which are difficult to burn or the moisture content range in garbage is wide, rotary kiln will be the only ideal choice. Owing to rotation change, residence time of garbage in rotary kiln can be adjusted. Rotation of kiln drum will impose strong mechanical collision for garbage in high temperature air and surplus oxygen. Combustible matters and furnace slag with very low corruption material can be got during the process.
Solid garbage incineration rotary kiln can be used to deal with various materials, especially for incinerating industrial garbages. Its application in domestic garbage incinerating is mainly for improve furnace slag burn-off rate. Completely burn off garbage can meet reutilization quality requirement of furnace slag.
Taeda garbage incineration rotary kiln is characterized by following features:
(1)Complete decomposition of organic mattersQ
Temperature in rotary kiln generally ranges from 1350℃ to 1650℃, or even higher. Residence time of combustible gas here is longer than 8s. Residence time of combustible gas higher than 1100℃ is longer than 3s. Total residence time of combustible gas is about 20s. Materials in rotary kiln present in high turbulent state. Therefore, harmful organic matters in sludge can be fully burnt and incineration rate can reach 99.999%. Even the stable organic matters like dioxin can be fully decomposed.
(2)Restrain the formation of dioxin
Feeding point of dry sluge is at 850℃ decmposition furnace where heat capacity is large and stable, which effectively restain the formation of dioxin. According to practice of using cement kiln to deal with toxic and harmful matters at home and abroad, dioxin emission content of wastes after incineration is much lower than emission standard limit.
(3)Produce no flying dust
Exhaust gas and dust released after incineration can be reused as cement materials for rotary kiln after being collected in bag filter. There is no dangerous wastes and flying dust produced.
(4)Assimilate heavy metal
Refractory brick, raw material, kiln shell and clinker in rotary kiln all are alkaline which can be used to absorb SO2 and restrain emission. During the sintering of cement, heavy metal in slag can be fixed in cement clinker so that to reach solidification purpose.
(5)High recycle rate
Both organic matters and inorganic matters in sludge can be fully utilized and recycling rate is high. There are partial organic matters (＞55%）and combustible matter. These matters will produce heat during calcining in rotary kiln. Low calorific value of sludge is about 11MJ/kg almost equal to lean coal with 55% ash content and 10%-15% volatile matter. Heat value is 10 to 12.5MJ/kg.
(6)Large handling capacity and quick effect
Heat capacity of this kiln is large and rotary kiln holds stable process, which provides convenience for sludge disposal and quick effect.
Advantages
Process advantages and features: ：
1.Because of uniform combustion in furnace, there is less slag bulk produced and ignition loss is not much.
2.Feeding dry sludge can realize stable combustion and causes less change of emission.
3.Stable combustion temperature, nitrogen oxides content becomes less.
4..Low construction expense
Technical parameters
Input capacity：500kg/h~200t/d
Application range：wastes and sludge from daily life and chemical industry
If you are in need of technical support for garbage incineration disposal, please contact us over +86 18539990967 or service@tdaxy.com.
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