Pristine-M process technology for drying of low rank coals Aug09

Pristine-M process technology for drying of low rank coals...

Pristine-M process technology for drying of low rank coals Pristine-M process technology for the drying of the low rank coals is being developed by Clean Coal Technologies, Inc. (CCTI). It is a patented technology for converting raw low rank coal into a cleaner burning more efficient fuel. It addresses the need for a low moisture coal which is economical to transport, stable in transportation and does not reabsorb moisture. Pristine-M is a low-cost coal de-watering technology which has succeeded in drying coal and stabilizing it cheaply using volatile matter (VM) released by the feed raw coal. Pristine-M process reduces the moisture content of low-rank coals, while also stabilizing and sealing the treated coals to prevent moisture re-absorptions and spontaneous combustion. The process also increases the calorific value (CV) of the low-rank coals to values which are comparable with the bituminous coals. Pristine-M is the third stage of the development of the process. The other two stages are ‘Pristine-SA’ and ‘Pristine’. Pristine-SA is a development stage technology designed to eliminate 100 % of the VM in the feed raw coal. For achieving stable combustion, Pristine-SA treated coal is to be co-fired with treated biomass or natural gas. The process results into a clean fuel, eliminating the need for emissions scrubbers and the corollary production of toxic flue gas desulphurization (FGD) sludge. Pristine-SA gives a versatile coal product which can be used to produce numerous non-fuel products. CCTI’s legacy technology, ‘Pristine’, is designed to remove moisture and VM, as per the requirements. The factor determining VM reduction is boiler design and the need for a certain amount of VM to remain in the coal to ensure proper burn. The end product is a cleaner burning, dry coal. CCTI’s Pristine-M technology is a patented, low-cost coal dehydration...