Browse Publications Technical Papers 2004-01-2380
2004-07-19

A Hybrid Pyrolysis / Oxidation System for Solid Waste Resource Recovery 2004-01-2380

Pyrolysis is a very versatile waste processing technology which can be tailored to produce a variety of solid, liquid, and/or gaseous products. The main disadvantages of pyrolysis processing are: (1) the product stream is more complex than for many of the alternative treatments; (2) the product gases cannot be vented directly into the cabin without further treatment because of the high CO concentrations. One possible solution is to combine a pyrolysis step with catalytic oxidation (combustion) of the effluent gases. This integration takes advantage of the best features of each process. The advantages of pyrolysis are: insensitivity to feedstock composition, no oxygen consumption, and batch operation. The main advantage of oxidation is the simplicity and consistency of the product stream. In addition, this hybrid process has the potential to result in a significant reduction in Equivalent System Mass (estimated at 10-40%) and system complexity. This paper includes data from a laboratory study of a hybrid pyrolysis/oxidation process, including results for the following cases: 1) without post-oxidation; 2) with post-oxidation; 3) with catalyzed post-oxidation.

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