Internal heating type dryer for in-furnace coking coal dehumidification

Abstract

The invention discloses an internal heating type dryer for in-furnace coking coal dehumidification, which comprises a dryer outer frame, a drying area on the upper portion in the dryer outer frame, a fluidized bed drying heating area under the drying area and an air distribution area on the lower portion in the dryer outer frame. The drying area is provided with an exhaust space (10) and a heat exchange face, a coil heat exchanger (11) is arranged in the fluidized bed drying heating area, a fluidized air chamber (9), an air distribution plate (8) and a hood (12) are arranged in the air distribution area, and the air distribution plate (8) and the hood (12) form a module structure connected with the fluidized air chamber (9). The internal heating type dryer is simple in structure, good in exchangeability, convenient to overhaul, reliable in operation and reliable and flexible in dehumidification control adjustment, saves energy, is simple in system adjustment and responses quickly to heat adjustment of the heat exchanger. A large drying system can be formed by a plurality of dryers according to the production requirement, and only one backup module is needed to ensure normal production of a humidifying system, so that scale of spare equipment of the existing humidifying system is reduced.

Description

technical field [0001] The invention relates to the technical field of coking in the coking industry, in particular to an internal heat dryer for dehumidification of coking coal fed into a furnace. Background technique [0002] Coal humidity control process (CMC) refers to the process of "moisture control of coal for coking and charging furnace". It is developed on the basis of dry coal coking technology. , dehydration, to achieve the adjustment and control of coal moisture. According to the current coking process requirements, the moisture in coal is controlled at about 6%, so as to reduce the energy consumption of the coking process, ensure the stability of coke oven operation, improve the quality of coke or increase the weak The purpose of adding the amount of caking coal and reducing the amount of coking sewage. At the same time, the moisture content of the coking coal in the furnace is reduced, and the bulk density of the coal is increased, which correspondingly increa...

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Problems solved by technology

[0004] In order to solve the problems of high energy consumption, low debugging ability, large basic investment, high operating cost, complicated control and adjustment, and large amount of maintenance and repair of the current coal humidity control device in our country, the present invention provides a method for removing coke coal into the furnace. A wet internal heating dryer, including the outer frame of the dryer, the upper drying area inside the outer frame of the dryer, the fluidized bed drying heating area below the drying area and the lower air distribution area, and the drying area is provided with an exhaust space 10 and heat exchange surface; said fluidized bed drying and heating zone is provided with serpentine tube heat exchanger 11; said air distribution area is provided with fluidized air chamber 9, air distribution plate 8 and wind cap 12, said air distribution area The plate 8 and the air cap 12 are combined into a modular structure, which is connected with the fluidization air chamber 9

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