Waste processing equipment for introducing thermolysis gas of waste into cement decomposition furnace

Abstract

The invention relates to waste processing equipment for introducing the thermolysis gas of waste into a cement decomposition furnace, which is adjacent to cement manufacture equipment (200) provided with a cement firing furnace (30), a clinker cooler (40) for cooling the fired object of the cement firing furnace and a decomposition furnace (20) to which high-temperature waste gas flows from any of the firing furnace and the clinker cooler. The waste processing equipment for introducing the thermolysis gas of waste into the cement decomposition furnace is provided with a gasification furnace (1) and a gas conveying channel (6), wherein the gasification furnace (1) causes the waste to be gasified to generate thermolysis gas; the gas conveying channel (6) conveys the generated thermolysis gas into the decomposition furnace (20) under the condition that carbon and ash content contained in the thermolysis gas are kept intact; the thermolysis gas is introduced into the decomposition furnace (20) in the form that the thermolysis gas does not directly interfere with the main flow of the waste gas flow from the firing furnace (30) or the clinker cooler (40) so as to prevent the thermolysis gas from blowing and cause the thermolysis gas to fully burn; and therefore, the traditional cement manufacture equipment is effectively utilized, and the waste can be cleanly processed with low cost.

Description

technical field [0001] The present invention relates to a waste treatment facility for sanitary treatment of waste by using a calciner installed adjacent to a cement manufacturing facility, and particularly relates to effective utilization of gas obtained by thermally decomposing the waste. Background technique [0002] In recent years, with the improvement of living standards, there is an increasing need for sanitary treatment of garbage, and the increase in the amount of incineration is also predicted. The problem of very long construction period. In addition, it is necessary to evaluate the impact of the incinerator on the surrounding environment and disclose information to nearby residents, so it takes a long time to prepare before the start of construction. Furthermore, in Japan there is still a shortage of landfill sites for burying the ashes generated by incinerators. When establishing new waste disposal sites, installation of ash melting furnaces and establishment o...

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Problems solved by technology

[0004] However, in general, the calorific value of garbage is about 1000-3000 kcal / kg, which is lower than that of the fuel usually used in cement kilns (in the case of using coal, the calorific value of low-grade media is 5000-7000 kcal / kg). , so when the pyrolysis gas from waste, for example, is sent to the cement kiln for combustion, the temperature in the kiln is low, and the fuel consumption may not be ideal.

[0005] Moreover, the water vapor contained in the pyrolysis gas from garbage may have adverse effects on the properties of cement clinker, and when the pyrolysis gas is burned in a cement kiln, hot spots may occur to form deposits

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