What are the main technical accomplishments made at CPRC in coal log pipeline R&D?
The main technical accomplishments include: (1) success in producing water-resistant and wear-resistant coal logs; (2) success in testing logs produced in a 5-mile-long existing underground pipeline in Conway, Kansas; (3) success in demonstrating a low-cost, highly-effective, hydrophobic binder for making coal logs; (4) demonstrated that by using a trace amount of a high molecular weight polymer, energy consumption in CLP can be greatly reduced (drag-reduction phenomenon); (5) discovered a new method to dissolve polymer in water which is far more effective than current methods; (6) discovered several ways to make good-quality coal logs and other compacted solids such as by modifying mold exit shape and using back pressure during coal log ejection from mold; (7) obtained two U.S. patents and three others are pending; (8) developed theories for predicting the hydraulics of coal log flow, the compaction of coal logs, the heating and cooling of coal logs, the water absorption rate of coal
