Solvent-refined coal heavy distillate

The solvent-refined coal heavy distillate (SRC II HD, bp 260-450 °C) that was analyzed and used in this study was collected during the processing of a West Virginia coal from the Pittsburgh seam. Data from the analysis of a solvent-refined coal vacuum residue (SRC II VR) from the same process was also used. A coal tar was obtained from the National Bureau of Standards. This tar was a medium crude coke-oven tar... 

It is anticipated that coal derived liquids boiling above about 350 F will be disposed of to the utility market. Table V summarizes the potential utility markets for various types of coal derived fuels which include solvent refined coal, heavy boiler fuels, distillate boiler fuels, turbine fuels and methanol. Speculative locations for these markets are indicated on Figure 2. 

During the past 7 years, we have developed and applied new methodologies using capillary-column GC for the separation and identification of PACs in coal-derived liquids. The primary samples that were used throughout these studies included a solvent-refined coal (SRC II) heavy distillate and a coal tar. Details of the isolation and identification of polynuclear aromatic hydrocarbons (PAHs) (II), sulfur heterocycles (12, 13), nitrogen heterocycles (14,15), amino- substituted PACs (16-18), and hydroxy-substituted PACs (14, 19, 20) in an SRC II heavy distillate have already been published (II, 13, 15, 18, 21). 

The test material used In these experiments was CRM-1, a coal-oll comparative research material obtained from Oak Ridge National Laboratory. CRM-1 Is a liquid product from the SRC-II (solvent-refIned-coal-II) process and Is a mixture of middle and heavy distillates In a ratio of 2.9 to 1. Aqueous solutions of the test material were prepared by stirring crude CRM-1 with distilled water In 1-gal solvent bottles at a level of 2 g/L for five days. After equilibration, undlssolved oil was removed by passing the sample through a coarse glass frit, followed by filtration through a 0.45-U membrane filter three times to ensure a true aqueous solution with no visible droplets of undlssolved oil. 

Synonyms Benzin Benzine Coal tar naphtha Coal tar naphtha distillate Heavy naphtha Hydrotreated naphtha Naphtha coal tar Naphtha, heavy Naphtha, hydrotreated Naphtha, petroleum Naphtha, solvent Petroleum benzin Petroleum-derived naphtha Petroleum distillates (naphtha) Petroleum ether Petroleum naphtha Petroleum oil Petroleum spirit VM P naphtha Classirication Petroleum distillate high benzene naphtha Definition Refined, partly refined, or unrefined petrol, prods, produced by distillation of nat. gas consists of predominantly C5-6 hydrocarbons Properties Dark straw-colored to colorless liq. sol. in benzene, toluene, xylene ... 

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