Water vapor activation preparation method and device of micro-porous active carbon fibers

Abstract

The invention provides a water vapor activation preparation device and method of micro-porous active carbon fibers. The method comprises the following steps of: carrying out carbonization on fiber raw materials at 600-1000 DEG C under a drying protection gas atmosphere in a high-temperature tubular furnace; measuring the temperature by a temperature measurement probe, and controlling a water temperature in a closed type hot water kettle in a range from a room temperature to 99 DEG C; activating the carbonized fiber raw materials; in an activation process, introducing protective gas into the closed type hot water kettle and heating by hot water in the closed type hot water kettle; fully filling protective gas with water vapor into a space above a hot water level in the closed type hot water kettle; introducing the protective gas with the water vapor into the high-temperature tubular furnace; activating the carbonized fiber raw materials at 700-900 DEG C under the atmosphere of the protective gas with the water vapor;after the activation is finished, stopping introducing the water vapor and closing the high-temperature reaction furnace; and cooling to obtain the micro-porous active carbon fibers. According to the water vapor activation preparation device and method disclosed by the invention, the structure of the device is simple, a process is easy to control, the energy consumption is small, the quality of products is uniform and the popularization and application are convenient.

Description

technical field [0001] The invention belongs to a preparation method and a preparation device in the field of activated carbon fiber production, and in particular relates to a preparation method and preparation equipment for water vapor activation of microporous activated carbon fibers. Background technique [0002] Activated carbon fiber is the third-generation activated carbon material developed after powder activated carbon and granular activated carbon. Compared with the former two, it has excellent processing performance and is easy to process into various forms such as felt, cloth, and paper. Since it came out in the 1900s, it has been widely used in food, medical, environmental protection, textile, nuclear energy and other industries. At present, the precursors for preparing activated carbon fibers mainly include viscose fibers, phenolic-based fibers, polyacrylonitrile fibers, pitch-based fibers, polyvinyl alcohol-based fibers, styrene / olefin copolymer fibers, and woo...

AI Technical Summary

Problems solved by technology

The Chinese invention patent application with the publication number CN85103470A "Activation method and equipment for activated carbon" discloses a method of activation using water vapor generated by drying carbonaceous materials in a furnace as an activation medium. This method can make the activation process to a certain extent It is carried out gently, but the water vapor produced by drying is not easy to quantify, so that the purpose of controlling product quality cannot be achieved

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