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Method and system for drying and incinerating urban household garbage through dry-process rotary kiln

A technology of urban domestic garbage and garbage, which is applied in the direction of cement production and solid waste removal, can solve the problems of small investment and good economy, and achieve the effects of small investment, simple and reliable process, which is beneficial to increase production and save coal

Active Publication Date: 2014-07-30
长沙紫宸科技开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and system for drying and incinerating urban domestic waste in a dry rotary kiln in view of the deficiencies in the prior art. This method can solve the impact of urban domestic waste on kiln conditions and the increase in coal consumption It can effectively eliminate the sticking problem caused by water in the garbage and chlor-alkali to the kiln system, and can completely eliminate the discharge of waste residue, waste gas, waste water and toxic and harmful substances, and is suitable for treating domestic garbage of different scales and characteristics in cities, counties and towns, with small investment , good economy

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  • Method and system for drying and incinerating urban household garbage through dry-process rotary kiln

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Embodiment Construction

[0024] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025]The dry method rotary kiln drying of the present embodiment, the method for incinerating municipal solid waste, with the C5 feeding pipe of dry method rotary kiln preheater system as the preheating drier of rubbish, with the CaO that flows in the C5 feeding pipe as The main strong alkaline high-temperature powder is used as the preheating drying medium, and the pretreated wet garbage is fed into the C5 feeding pipe through the garbage feeding lock air device, and the high-temperature powder mainly containing CaO in the C5 feeding pipe is used for rapid drying And alkalineize the garbage, so that the moisture in the garbage is vaporized into high-temperature steam, and the dry and flammable garbage enters the smoke chamber at the tail end of the kiln with the powder, and is quickly gasified and bu...

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Abstract

The invention provides a method and system for drying and incinerating urban household garbage through a dry-process rotary kiln. The method comprises the following steps: feeding wet garbage into a C5 blanking pipe, fast drying and alkalizing the garbage by utilizing high-temperature powder in the C5 blanking pipe, enabling the dry and easily-combustible garbage to enter in a kiln tail smoke chamber along with the powder, so as to be fast gasified and combusted, pumping high-temperature steam and combustion waste gas generated due to combustion through a bypass flue, mixing cold wind through a bypass fan so as to be mixed and regulate the temperature, and collecting dust through a dust collector, wherein the residual heat of dust-removed waste gas is used for power generation of a cement kiln waste heat power generation system, or productive drying, or can be discharged after dust is finely collected; calcining untimely burnout garbage and burnout slag into clinker in the rotary kiln along with raw materials; and enabling untimely burnout hydrocarbon compounds to ascend into a decomposing furnace for continuously burning. The invention further comprises the system for drying and incinerating urban household garbage through a dry-process rotary kiln. According to the method and system, the problems that the urban household garbage causes the influence on a kiln condition and the increase of coal consumption can be solved, and the sticking and plugging of a kiln system caused by the water in the garbage and chlor-alkali can be effectively eliminated.

Description

technical field [0001] The invention relates to drying and incineration treatment of domestic garbage in cities and towns, in particular to a method and system for drying and incinerating domestic garbage in a dry rotary kiln. Background technique [0002] At present, the drying and incineration of domestic waste in cities and towns is widely used at home and abroad. Professional drying furnaces or beds and professional waste incinerators require large investment, high energy consumption in operation, and harmless treatment is actually very difficult, especially in domestic low calorific value waste incineration. Furnace generally needs to add coal or inject oil to support combustion. [0003] In terms of dry rotary kiln co-processing of domestic waste, domestic powerful cement group enterprises such as BBMG, Conch, Huaxin, China Resources, and Taiwan Cement have introduced or learned from Denmark, Sweden, Germany, Japan and other foreign technical experience. After years o...

Claims

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Application Information

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IPC IPC(8): C04B7/24C04B7/43B09B3/00
CPCY02P40/10
Inventor 尹小林
Owner 长沙紫宸科技开发有限公司
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