| US 7,461,466 B2 | ||
| Method and apparatus for drying wet bio-solids using excess heat from a cement clinker cooler | ||
| Edward L. Morton, Bethlehem, Pa. (US); Laszlo Szabo, Macungie, Pa. (US); Rainer Nobis, Emmaus, Pa. (US); and Shane Alesi, Kutztown, Pa. (US) | ||
| Assigned to Lehigh Cement Company, Allentown, Pa. (US) | ||
| Filed on Jun. 14, 2004, as Appl. No. 10/866,999. | ||
| Prior Publication US 2005/0274066 A1, Dec. 15, 2005 | ||
| Int. Cl. F26B 3/00 (2006.01) | ||
| U.S. Cl. 34—469 [34/468; 432/66] | 10 Claims |
| 1. A method for drying wet bio-solid material for use as a fuel or fuel additive in a cement making process comprising the
steps of:
extracting excess heat from a clinker cooling apparatus used in said cement making process;
using said excess heat extracted from said clinker cooler to heat a contact drying surface;
exposing said wet bio-solid material to said contact drying surface whereby said bio-solids are dried by evaporation of moisture
and volatile components from said wet bio-solids;
condensing water evaporated from said bio-solids for reuse or safe disposed;
recovering said volatile vapors for introduction into a combustion process in said cement making process; and
recovering a dried bio-solid product.
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