OCR Text |
Show Since these experiments were conducted at the optimum conditions determined for each project coal, the comparisons of the diesel and heptane processes were not made under the same operating conditions. All of the experiments in the diesel test program were conducted at 20% solids, while 5% solids was used for the heptane test program. Also, while the topsize for the heptane tests was constant at 200 mesh, coarser particles (28 or 100 mesh) were used to give similar performance in the diesel process. In addition, tests are now underway to optimize overall performance using optimal conventional precleaning coupled with agglomeration. All of these data will be confirmed during continuous processing at the 5-kg/h level. 7.0 TASK 6: UNIT OPERATIONS TESTING Task 6 involves unit operations testing at the 3-tjh continuous scale at Wilsonville, Alabama. Unit operations activities focused on the construction, commissioning, and startup of the Component Development Test Facility (CDTF) and the evaluation of operating parameters. The CDTF was designed to be ultimately compatible with both the diesel and heptane process options. However, unit operations testing at the CDTF will be devoted to the diesel process, while the heptane process will be studied at the laboratory scale and at vendor facilities with primary emphasis on dryer testing for recovery of the heptane agglomerant. At the conclusion of Phase 1 of the project, a recommendation will be made on whether to convert the CDTF to a diesel-based or heptane-based proof-of-concept (POC) module. A conceptual block diagram of the CDTF is presented in Figure 1. DI_TIRING TEST eTAND TAILINGI REFUIE DU"TERING TilT STAND FINAL AOGLOWERATID 'RODUCT Figure 1: Component Development Test Facility 6 |