Laboratory-Scale Coking of Coal-Petroleum Mixtures in Sealed Reactors
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- 作者：Anne E. Fickinger ; Mark W. Badger ; Gareth D. Mitchell ; and Harold H. Schobert
- 刊名：Energy & Fuels
- 出版年：2004
- 出版时间：July 2004
- 年：2004
- 卷：18
- 期：4
- 页码：976 - 986
- 全文大小：488K
- 年卷期：v.18,no.4(July 2004)
- ISSN：1520-5029
文摘
Three highly fluid bituminous coals-from the Pittsburgh, Powellton, and Eagle seams-werereacted with atmospheric resid and decant oil in microautoclave reactors under nitrogen attemperatures of 450-500 
C. This exploratory study is the first step in evaluating the prospectsfor adding coal to delayed cokers to obtain coal-derived components in the liquid product.Subsequent hydrotreating (not studied here) of the liquid would produce a jet fuel with goodstability toward pyrolytic decomposition. Coal-derived components appear in the oil fraction fromcoal-resid reactions at 465 C. This reaction temperature represents a "coke jump", in whichthe yield of solid, as a function of temperature, increases dramatically. This behavior is notobserved when the individual feedstocks are reacted alone. Further evidence for coal-petroleuminteractions in this system is exhibited by the fact that (i) the product slates from the co-cokingreactions are not linear combinations of the products from the feedstocks reacted individuallyand (ii) the fluidity profiles of the Powellton-resid mixtures are similar to those for two interactingcoking coals. The effect of changing coal with the same petroleum feedstock is minimal, althoughthe coals are very similar in composition and properties. In contrast, changing from resid todecant oil with the same coal causes major changes in the product slate.
C. This exploratory study is the first step in evaluating the prospectsfor adding coal to delayed cokers to obtain coal-derived components in the liquid product.Subsequent hydrotreating (not studied here) of the liquid would produce a jet fuel with goodstability toward pyrolytic decomposition. Coal-derived components appear in the oil fraction fromcoal-resid reactions at 465 C. This reaction temperature represents a "coke jump", in whichthe yield of solid, as a function of temperature, increases dramatically. This behavior is notobserved when the individual feedstocks are reacted alone. Further evidence for coal-petroleuminteractions in this system is exhibited by the fact that (i) the product slates from the co-cokingreactions are not linear combinations of the products from the feedstocks reacted individuallyand (ii) the fluidity profiles of the Powellton-resid mixtures are similar to those for two interactingcoking coals. The effect of changing coal with the same petroleum feedstock is minimal, althoughthe coals are very similar in composition and properties. In contrast, changing from resid todecant oil with the same coal causes major changes in the product slate.