Method and device for utilizing exhaust gas of haydite rotary kiln

Abstract

The invention provides a method and device for utilizing exhaust gas of a haydite rotary kiln, belonging to the technical field of inorganic nonmetal materials. The method and the device for utilizing exhaust gas of the haydite rotary kiln solve the problem that the conventional pre-drying equipment cannot sufficiently utilize a heat source carried in the hot exhaust gas. The method for utilizingexhaust gas of the haydite rotary kiln comprises the following steps: A. the exhaust gas enters a gas outlet pipeline I and a gas outlet pipeline II after entering a flue entrance; B. the exhaust gascomes out from the gas outlet pipeline I, then passes through a drying machine and is finally discharged to the outside; and C. the exhaust gas comes out from the gas outlet pipeline II, then passes through a heat exchanger and is finally discharged to the outside. The device for utilizing exhaust gas of the haydite rotary kiln comprises a haydite rotary kiln, flues of the two gas outlet pipelines, namely, the gas outlet pipeline I and the gas outlet pipeline II are connected to the tail part of the haydite rotary kiln, the gas outlet pipeline I is connected with the drying machine, and the gas outlet pipeline II is connected with the heat exchanger. The method and the device for utilizing exhaust gas of the haydite rotary kiln can improve the configuration of effective energy source consumption in the whole process and meet the strategy of sustainable development.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to a method and a device for utilizing tail gas of a ceramsite rotary kiln. Background technique [0002] With the continuous development of the city, the large amount of domestic waste produced in people's life and the sludge continuously generated in sewage treatment plants have become an increasingly prominent problem, and it is also a difficult problem that urban life management must face for a long time. The traditional treatment methods are deep burial or discharge of these garbage into the sea or incineration. The above-mentioned treatment methods will undoubtedly cause secondary pollution to the ecological environment, and at the same time cannot solve the problem of continuous increase in garbage. It can be seen that the traditional method does not solve the problem in essence. As the best solution for waste disposal, people are graduall...

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Problems solved by technology

[0005] In the pre-drying process of the above-mentioned sludge ceramsite production, the hot exhaust gas of the rotary kiln is used to pre-dry the sludge raw material. The temperature of the hot exhaust gas of the rotary kiln is relatively high, usually around 300°C. The sludge raw material is far from being able to make full use of the heat source carried by the hot tail gas, so the process still needs to be perfected

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