Hydrothermal deashing-self-water activation activated carbon preparation device

Abstract

The invention discloses a hydrothermal deashing-self-water activation activated carbon preparation device. The device comprises a hydrothermal deashing reaction kettle and a pyrolysis and activation integrated furnace, the hydrothermal deashing reaction kettle is connected with a solid-liquid separator through a first discharge port, the solid-liquid separator is connected with a storage bin through a mixture discharge port, the storage bin is connected with the pyrolysis and activation integrated furnace through a second discharge port, and the tail end of the pyrolysis and activation integrated furnace is connected with a carbon storage bin. According to the device, biomass deashing and steam carbonization are combined in one step in the pyrolysis and activation integrated furnace, generated high-temperature flue gas is not in contact with materials, and the prepared activated carbon is low in ash content and high in specific surface area, after biomass is deashed and filtered, residual moisture carried by the biomass directly enters the pyrolysis and activation integrated furnace to serve as steam for activated carbon activation, self-water activation is achieved, and energy consumption is reduced, external heating is adopted, pyrolytic oil steam enters a combustion chamber to be combusted, heat is provided, energy is saved, meanwhile, cyclic utilization of a sodium hydroxide solution and water is achieved, and the preparation cost is reduced.

Description

technical field [0001] The invention relates to an activated carbon preparation device, more specifically, to a hydrothermal deashing-self-water activated activated carbon preparation device. Background technique [0002] Activated carbon has excellent adsorption performance, stable properties and good cycle regeneration, and is widely used in many fields such as production, life and scientific research. However, most of the raw materials for traditional activated carbon preparation are non-renewable resources. High-quality activated carbon has high price, low quantity, and low regeneration efficiency, which seriously restricts its large-scale industrial application. Therefore, as a renewable resource abundant in nature, the research on preparing biochar from biomass has long been concerned. large-scale industrial applications. The earliest preparation device was a rotary kiln, which had poor airtightness, poor charcoal quality, and consumed a lot of heat energy, so it was...

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Problems solved by technology

However, most of the raw materials for traditional activated carbon preparation are non-renewable resources. High-quality activated carbon has high price, low quantity, and low regeneration efficiency, which seriously restricts its large-scale industrial application.

Therefore, as a renewable resource abundant in nature, the research on preparing biochar from biomass has long been concerned. large-scale industrial application

The earliest preparation device was a rotary kiln, which had poor airtightness, poor charcoal quality, and consumed a lot of heat energy, so it was gradually eliminated

With the further development of the device, a continuous feeding device and a fixed bed device appeared, but the device did not effectively solve the shortcomings of high ash content and poor quality of biochar, which is not conducive to fine research and production

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