Pyrolysis garbage technology performed by means of double-cylinder rotary kiln

Abstract

The invention belongs to the technical field of environmental engineering, and provides a pyrolysis garbage technology performed by means of a double-cylinder rotary kiln. The pyrolysis garbage technology performed by means of the double-cylinder rotary kiln includes the double-cylinder rotary kiln, a cement production line and technology connection pipelines, wherein the double-cylinder rotary kiln includes a pyrolysis passage, an ash heat return passage, a kiln head cover and a kiln tail cover; the cement production line includes a cement rotary kiln, a clinker cooling machine and a predecomposition furnace; and the technology connection pipelines include a tertiary air pipeline for communicating the clinker cooling machine with the kiln tail cover, a composite gas pipeline for communicating the cement rotary kiln with the kiln tail cover, a composite gas shunting pipeline for communicating the ash heat return passage with a composite gas eduction pipe of the kiln tail cover, a waste gas waste heat pipeline for communicating a side hot air inlet of the predecomposition furnace with a waste gas exhaust connector of the kiln head cover, and a garbage slag pipeline for communicating a side feed opening of the predecomposition furnace with a garbage slag outlet of the kiln head cover. The technology is utilized for processing domestic garbage with the cement rotary kiln for cooperation, utilizes the high-temperature pyrolysis garbage cooled by cement clinker to effectively avoid the dioxin generation conditions during the garbage incineration, and effectively utilizes the heat value of garbage, and further completely utilizes the garbage ash in a recycling manner.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering and is applied to the cooperative disposal of domestic garbage by cement rotary kilns. It is especially suitable for the process of disposing pyrolysis waste beside the existing cement rotary kiln production line; it is also suitable for implementing the technological transformation of the process in the existing waste incineration field. Background technique [0002] The waste treatment of the current technology mainly includes landfill, composting and incineration, which are three relatively common treatment methods. Landfill not only encroached on valuable land resources, wasted valuable recyclable resources in garbage, but also caused potential impact and harm to the environment. With composting technology, many harmful substances will enter the soil with composting products, causing secondary pollution. Incineration technology is a waste treatment method commonly used in d...

AI Technical Summary

Problems solved by technology

Landfill not only encroached on valuable land resources, wasted valuable recyclable resources in garbage, but also caused potential impact and harm to the environment

Composting technology, many harmful substances will enter the soil with composting products, causing secondary pollution

Incineration technology is a waste treatment method commonly used in developed countries, and it is an effective way to reduce waste. However, post-incineration treatment (including waste residue, waste gas post-treatment and utilization of incineration heat) requires a large investment, and a little carelessness will result in gas pollution

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