Novel system and method for preparing coal-based delimed carbon

The invention discloses a novel system and method for preparing coal-based delimed carbon. A high-pressure reaction kettle is used in the alkali washing step, so that silicon dioxide and aluminum-containing minerals in the coal can be removed to the greatest extent, and indexes such as ash content and metal element content of a coal sample obtained after acid-alkali deliming meet requirements. A KOH activation method is used for activating deashed coal to obtain a deashed carbon product, high-temperature nitrogen needs to be used for maintaining the atmosphere and temperature in an activation furnace in the activation process, and the high-temperature nitrogen discharged from the activation furnace passes through an energy gradient utilization system and a nitrogen recovery system, so that the energy utilization rate and the nitrogen recovery rate are improved to the maximum extent. 本发明公开了一种制备煤基脱灰炭的新型系统及方法。在碱洗步骤时使用高压反应釜，使得煤中的二氧化硅和含铝矿物能最大程度的被脱除，从而使得酸碱脱灰后得到的煤样灰分、金属元素含量等指标满足要求。使用KOH活化法对脱灰后的煤进行活化得到脱灰炭产品，在活化过程中需要使