Apparatus for stepwise drying and cascade humidity control process of coking coal

Abstract

The invention discloses a device for a coking coal stage drying step humidify regulating process. The device comprises a first-stage humidify regulating process loop and a second-stage humidify regulating process loop, wherein the first-stage humidify regulating process loop comprises a first-stage fluidization air chamber (19), an air preheater (14) and a first fluidization fan (20), wherein no coiled pipe heating module is arranged in the first-stage fluidization air chamber (19), and a layer of bed materials with the thickness being 500 to 600mm is arranged at the bottom; the second-stage humidify regulating process loop comprises a second-stage fluidization air chamber (6) and a second fluidization fan (10); the second-stage fluidization air chamber (6) mainly consists of a plurality of humidify regulating modules; a coiled pipe heater is arranged in each humidify regulating module. The device has the advantages that the stage drying step humidify regulation is realized through two stages of humidify regulating process loops, so that the device has wide coal humidify applicability; the coal dust generation and elutriation can be orderly controlled; energy can be fed in a step way according to the technological process; the system operation regulation is reliable and flexible; the energy saving performance is high.

Description

technical field [0001] The invention relates to the technical field of coking in the coking industry, in particular to a device used in the stepwise drying and cascading humidity control process of coking coal. 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 the 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 corre...

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Problems solved by technology

[0004] In order to solve the current problems of high energy consumption and low adjustment ability for coal humidity adjustment, the present invention provides a device for the staged drying and cascade humidity adjustment process of coking coal, including the first stage humidity adjustment process loop and the second stage Humidity control process circuit, the first stage humidity control process circuit includes the first stage fluidization air chamber 19, the air preheater 14 and the first fluidization fan 20, and there is no serpentine in the first stage fluidization air chamber 19 The tube heating module has a layer of 500-600mm thick bed material at the bottom; the second section of humidity control process circuit includes the second section of fluidization air chamber 6 and the second fluidization air chamber 10, and the second section of fluidization air chamber 6 Consists of several humidity control modules, with a coiled tube heating module inside

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