CONTINUOUS TEMPERATURE VARIANCE PYROLYSIS FOR EXTRACTING PRODUCTS FROM TIRE CHIPS

摘要

An apparatus (10) and process for pyrolyzing tire chips to extract carbon black, oil, and various gases is disclosed. The pyrolysis process in effect causes a chemical change in the tire chips (16) through the application of heat. The tire chips (16) are fed into an inclined rotary kiln (14) and exposed to heat at a continuously varying temperature from a low to a high temperature at below atmospheric pressure. Within the kiln (14), the tire chips (16) are soaked in oil such that a chemical reaction occurs, resulting in a dry solid product (20) and a gaseous, vapor product (28). The solid product (20) is subsequently fed through a magnetic separator (24) which separates the steel from the char. The char can then be upgraded to yield carbon black. The vapor product (28) passes through multiple condenser/scrubbers (30, 50) to yield a purified form of oil for storage, char for conversion into carbon black, and uncondensed gas used as fuel for the kiln (14).