Abstract:
PURPOSE: A method for manufacturing an adsorbent pellet for wastewater treatment by using highly unburned carbon fly ash is provided to recycle highly unburned carbon fly ash generated from thermoelectric power plants as byproduct. CONSTITUTION: The method for manufacturing an adsorbent pellet comprises the steps of blending 60-70 wt.% of raw material, 15-20 wt.% of coal tar pitch with a softening point of higher than 85°C, 2-3 wt.% of pitch solvent material, 2-3 wt.% of binder, 4-6 wt.% of catalyst and 8-12 wt.% of water; mixing above mixture for 30-60 minutes at 50-60°C; pelletization of above mixture; carbonization of prepared pellet in the temperature range of 550 to 650°C for 30-90 minutes as supplying nitrogen in an amount of 10 to 30 mL/min in rotary kiln; supplying hot steam that is preheated to the temperature range of 150 to 220°C in an amount of 1g-hot steam/hr·g-coal; and slowly cooling the pellet as supplying nitrogen gas in an amount of 10 to 30 mL/min.
Abstract:
PURPOSE: A dry preparation method of A-type zeolite for wastewater adsorbent using fly ash containing highly unburned carbon is provided. CONSTITUTION: The preparation method comprises: mixing 100 wt.% of fly ash or furnace slag with 10-50 wt.% of CaO and Na2CO3 in their mole ratio of 0.3-4 and carrying out hydrothermal reaction by heating at 20-200°C for 1-8 hours; and putting into molds, drying for 7 hours at room temperature or drying and reacting at 50-200°C for more than 24 hours in order to prepare molded A-type zeolite for treatment of polluted and wastewater.
Abstract translation:目的:提供使用含有高度未燃碳的飞灰的废水吸附剂A型沸石的干法制备方法。 构成:其制备方法包括:将100重量%的粉煤灰或炉渣与10-50重量%的CaO和Na 2 CO 3以0.3-4的摩尔比混合,并通过在20-200℃下加热进行水热反应 1-8小时; 并放入模具中,在室温下干燥7小时或干燥,并在50-200℃下反应超过24小时,以制备用于污染和废水处理的模制的A型沸石。
Abstract:
본 발명은 반응활성화제 첨가에 의한 제 3급 알칸올아민의 이산화탄소 흡수성능을 개선한 흡수제에 관한 것으로, 그 목적은 기존의 이산화탄소 흡수용 화학흡수제로 사용되고 있는 제 3급 알칸올아민에 반응활성화제를 첨가함으로써, 이산화탄소의 흡수속도 및 흡수양을 증진시킨 혼합 이산화탄소 흡수제를 제공하는데 있다. 본 발명의 흡수제는 한가지 이상의 제 3급 알칸올아민과 반응활성화제의 혼합 수용액으로써, 이산화탄소의 흡수속도를 18∼290%, 이산화탄소의 흡수능을 4∼238% 향상시킬 수 있는 흡수제이다.