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| PYROLYSIS
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The transformation on a compound or material into one or more substances by heat alone (without oxidation). Often called destructive distillation. Pyrolysis of biomass is the thermal degradation of the material in the absence of reacting gases, and occurs prior to or simultaneously with gasification reactions in a gasifier. Pyrolysis products consist of gases, liquids, and char generally. The liquid fraction of pyrolisized biomass consists of an insoluble viscous tar, and pyroligneous acids (acetic acid, methanol, acetone, esters, aldehydes, and furfural). The distribution of pyrolysis products varies depending on the feedstock composition, heating rate, temperature, and pressure. |
| PYROXYLIN
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Paint or varnish binder, also called pyroxylin or nitrocellulose, which is composed from a nitric acid reaction with cellulose fibers. |
| PYTHAGOREAN THEOREM
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A mathematical principal used to calculate the length of a triangle's hypotenuse where the dimensions of the other two sides are known. The square of the hypotenuse equals the sum of the squares of the other two sides. |
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