A cement kiln capable of gasifying waste outside the kiln and its gasification method

Abstract

The invention discloses a cement kiln capable of realizing waste gasification outside the same and a gasification method thereof. The cement kiln capable of realizing waste gasification outside the same comprises a cement kiln, wherein a gas inlet of the cement kiln is communicated with a gas outlet of a waste gasification furnace; a feed port of the waste gasification furnace is positioned below an outlet of a waste conveying device; an inlet of the waste conveying device is positioned in a waste material shed; and a waste grabbing device is arranged in the waste material shed. An operating method of the cement kiln capable of realizing waste gasification outside the same is characterized in that heat generated by burning part of waste in the waste gasification furnace is used to heat the rest of the waste in the waste gasification furnace, so that the rest of the waste can be gasified. According to the invention, the defect that domestic waste is high in water content and contains complicated components is overcome, the pretreatment procedure can be greatly simplified, the treatment cost is greatly lowered, and the domestic waste treatment scale is expanded; and furthermore, no auxiliary fuel is needed. Besides, the waste feeding uniformity can be ensured, thereby being beneficial to uniform distribution in the waste gasification furnace.

Description

technical field [0001] The invention relates to a device and a method for disposing garbage in a cement kiln, in particular to a cement kiln capable of gasifying garbage outside the kiln and a gasification method thereof. Background technique [0002] Waste disposal in the cement industry has become an inevitable trend for the sustainable development of the cement industry. With the acceleration of urbanization, the siege of garbage has plagued urban management. The development of cement kiln alternative fuel technology has been maturely applied in foreign developed countries for nearly 30 years, and its disposal safety has been recognized by the Basel Convention. From the perspective of the physical form of alternative fuels, there are three ways for cement kilns to use alternative fuels, namely solid, liquid and gas. Due to the relatively developed waste sorting in developed countries, industrial waste and RDF (refuse-derived fuel) are the main products, which are basica...

AI Technical Summary

Problems solved by technology

[0004] A technical problem to be solved by the present invention is to provide a cement kiln that can gasify garbage outside the kiln. This cement kiln overcomes the defects of high moisture content and complex components of domestic garbage, can greatly simplify the pretreatment process, and greatly reduce the cost of disposal. costs, expanding the scale of domestic waste disposal

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