System and method for co-processing polymorphic waste in cement kiln

Abstract

The invention provides a system and method for co-processing polymorphic waste through a cement kiln, the system comprises an incinerator, a cement kiln decomposing furnace and a tertiary air conveying piece, and the incinerator comprises a vertical incinerator body and a rotary incinerator body; a solid waste feeding port and a liquid waste feeding port are formed in the upper end of the vertical incinerator body; the rotary incinerator body is rotatably mounted between the vertical incinerator body and the cement kiln decomposing furnace, one end of the rotary incinerator body is communicated with the lower end of the vertical incinerator body, and the other end of the rotary incinerator body is communicated with the lower end of the cement kiln decomposing furnace; the tertiary air conveying piece communicates with the upper end of the vertical incinerator body and is used for conveying high-temperature tertiary air into the vertical incinerator body. According to the invention, the thorough combustion of various forms of wastes is realized, the heat of the solid wastes can be fully utilized, meanwhile, the influence on the normal working condition of the cement kiln is small, the low-cost and large-batch treatment of the polymorphic wastes in the cement kiln can be realized, and no secondary pollution such as waste gas, waste residue and the like is generated in the whole process.

Description

technical field [0001] The invention relates to the technical field of waste disposal, in particular to a system and method for co-processing multi-form waste in a cement kiln. Background technique [0002] Cement kiln co-processing is a new waste disposal method proposed by the cement industry. It refers to putting solid waste that meets the requirements of entering the kiln after pretreatment into the cement kiln, and realizes solid waste disposal while producing cement clinker. The harmless disposal process of waste. [0003] Cement kiln co-processing can be used to treat hazardous waste, domestic waste (including waste plastics, waste rubber, waste paper, waste tires, etc.), urban and industrial sewage treatment sludge, animal and plant processing waste, contaminated soil, emergency waste and other liquids , semi-solid and solid waste. [0004] The current online co-processing method of cement kiln mainly treats the waste through the online incinerator. The flue gas ge...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a system and method for co-processing multi-form wastes in cement kilns, which are used to solve the problem of insufficient waste turnover and insufficient combustion in the prior art incinerators, which easily produce secondary pollution such as waste gas and slag, and the heat utilization of waste itself Low efficiency, impact on the normal production of cement kiln and other defects, realize the complete combustion of various forms of waste, ensure that the heat of solid waste can be fully utilized, and at the same time have little impact on the normal working conditions of the cement kiln, can be Realize low-cost and large-scale disposal of multi-form waste in cement kilns, and there will be no secondary pollution such as waste gas and residue in the whole process

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