Alternating multi-fountain spouting-moving bed drier

Abstract

The invention provides an alternating multi-fountain spouting-moving bed drier and belongs to drying equipment and the engineering technical field. The alternating multi-fountain spouting-moving bed drier is characterized by mainly consisting of a box body, a hot air distribution board, an alternating multi-fountain generator component, a flash board, a hot air chamber partition board, a hot air inlet, a waste gas outlet, a wet material inlet, a product outlet and the like. A method adopting the drier comprises the following steps of: adding a wet material onto the hot air distribution board from the wet material inlet, forming an alternating multi-fountain spouting-moving particle bed layer under dual control action of an alternating multi-fountain generator and hot air so that particle materials having a wide grain size distribution can be dried in the drier under the conditions of low hot air speed, small particle bed layer thickness and big particle bed layer width, discharging dried qualified products from the product outlet, and discharging waste gas from the waste gas outlet. The invention has the advantages that: the drier has a simple structure, and is easy in manufacturing, small in occupied area and low in pressure drop of the particle bed layer.

Description

technical field [0001] The invention belongs to the field of drying equipment and engineering technology, and relates to a drying equipment for wet materials such as lignite and oil shale. Background technique [0002] For wet materials with a wide particle size distribution, such as lignite and oil shale, if an ordinary horizontal multi-chamber fluidized bed dryer is used, large particles have not been fluidized, while small particles have been taken away by the airflow. If the particle bed is too thin, it is difficult to fluidize the entire bed; if the particle bed is too thick, the bed pressure drop is too large; in addition, if the particle bed width is too large, it is difficult to make the entire particle The bed is evenly fluidized. Contents of the invention [0003] The purpose of the present invention is to provide a kind of multi-fountain-type spray-moving bed dryer that can alternately produce, so that the granular materials with wide particle size distribution...

AI Technical Summary

Problems solved by technology

[0002] For wet materials with a wide particle size distribution, such as lignite and oil shale, if an ordinary horizontal multi-chamber fluidized bed dryer is used, large particles have not been fluidized, while small particles have been taken away by the airflow. If the particle bed is too thin, it is difficult to fluidize the entire bed; if the particle bed is too thick, the bed pressure drop is too large; in addition, if the particle bed width is too large, it is difficult to make the entire particle The bed is evenly fluidized

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