Reactions of oxygen containing structures in coal pyrolysis
| Autor: | Werner Hodek, Karl-Heinrich van Heek, Jörg Kirschstein |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Bituminous coal
medicine.medical_specialty Chemistry business.industry General Chemical Engineering Organic Chemistry geology.rock_type Destructive distillation technology industry and agriculture geology Carbochemistry Maceral Energy Engineering and Power Technology Tar complex mixtures Fuel Technology Inertinite medicine Organic chemistry Coal business Pyrolysis |
| Zdroj: | Fuel. 70:424-428 |
| ISSN: | 0016-2361 |
| Popis: | In coal pyrolysis O-containing structures such as ether bridges and phenolic groups play an important role. Their reactions were studied by non-isothermal pyrolysis of a high volatile bituminous coal and some model polymers with gas Chromatographic detection of the gaseous pyrolysis products. The coal was separated into the maceral groups vitrinite, exinite and inertinite, which showed markedly different pyrolysis behaviour. The formation of CO, methane and benzene was measured versus temperature. By comparison with polyphenyleneoxide and phenol-formaldehyde resins, it was found that the main volatilization, during which most of the tar is evolved, is initiated by cleavage of alkyl-aryl-ethers. Rearrangements of the primarily formed radicals lead to the formation of CO and methane at higher temperatures. |
| Databáze: | OpenAIRE |
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