The invention relates to a process and a
system thereof for forming upgraded lignite, solving the problems of inflammability, explosiveness, environment
pollution, low forming rate, poor
system stability, low safety performance and the like existing in the forming process of the upgraded lignite. The invention can save the construction cost, reduces the
safety risk, decreases the
coal dust pollution of a finished product conveying
system and has the characteristics of safety, energy saving,
environmental protection, high efficiency and stability. The method comprises the following steps of: (1) feeding the formed lignite which is subjected to
drying and
dehydration and upgrading treatment and meets the requirements for
water content, the temperature and the
granularity; (2) pressing the lignite into the molded lignite by using a molding device, screening the molded lignite and feeding the qualified molded lignite into next step and turning the unqualified molded lignite into the step (1); (3)
air cooling the qualified molded lignite by adopting air with water
fog, feeding the cooled molded lignite into a finished bin and feeding lignite
powder / granules generated by cooling back tothe step (1); and (4) collecting
waste gas generated by cooling, removing dust and emptying or recycling to other proper work sections and feeding the lignite power collected by a dust removing device into the step (1).