Fluidized bed type gypsum calcining device

Abstract

The invention relates to a fluidized bed type gypsum calcining device which consists of a calcining furnace, a fire coal hot-blast stove, a Roots fan, a bagroom and a raw material preheater, wherein the calcining furnace is composed of two parts namely a gasification chamber and a main calcining body; the main calcining body is provided with three calcining chambers which are relatively independent; the lower part of each calcining chamber is connected with an isobaric air bellow and connected with the Roots fan; the main calcining body is internally provided with a heat exchange pipe which is respectively communicated with the fire coal hot-blast stove and the raw material preheater; the gasification chamber is arranged above the main calcining body; the top of the gasification chamber is provided with a rotoclone collector; the upper part of the rotoclone collector is provided with a moistureproof port; and the bagroom is installed above the rotoclone collector. By using the gypsum calcining device, the thermal efficiency and dust removal efficiency are improved, thereby solving the mixing problem of high-low temperature materials and ensuring the quality of a product.

Description

technical field [0001] The invention relates to a fluidized bed gypsum calcining device. Background technique [0002] At present, the domestic calcination of hemihydrate gypsum mostly adopts the vertical fluidized furnace calcination system, which consists of a two-chamber calcination furnace, a Roots blower used to blow up the material to make the material form a boiling shape in the furnace body, and a heat exchange tube used for calcination and dehydration of gypsum powder. , A high-voltage electrostatic precipitator device used to capture dust in the steam discharged from the dehydration process of gypsum powder, a heat transfer oil component used for heat transfer between heat transfer oil and hot blast stove and heat transfer oil fluid circulation in the system, and a device for indirect heating of heat transfer oil Composition of equipment such as hot blast furnace. The system uses a hot blast furnace to heat the heat-conducting oil, and the heat-conducting oil rehe...

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Problems solved by technology

The system uses a hot blast furnace to heat the heat-conducting oil, and the heat-conducting oil reheats the gypsum powder through the heat exchange tube. out, causing it to be heated unevenly and in a multi-phase mixed state, resulting in unstable product quality; the high-voltage electrostatic precipitator device has low efficiency, high investment, and difficult replacement of dust removal accessories; heat transfer oil is used as a heat exchange medium, making it difficult for the heat exchange pipeline Cleaning: The system does not have a ballast cleaning port, and production needs to be stopped to clean bricks, repair iron ballast and other sundries, the operating environment for workers is poor, and the labor intensity is high

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