Conversion of coal to synthetic gasoline and other distillate fuels. Final report, May 1976-June 1982
Two novel approaches were identified and developed in an experimental, exploratory study to convert coal to gasoline and other distillate fuels: conversion of coal potential catalytic cracking stock via the combination of hydroliquefaction and hydrogen chloride treatment; and conversion of Solvent Refined Coal-II (SRC-II) coal liquids to distillate motor fuels via a combination of chemical or solvent extraction and hydrogenation. The first approach tested the combination of milk hydroliquefaction of Illinois No. 6 coal followed by HCl treatment to achieve nitrogen reduction. Small scale batch experiments on coal hydroliquefaction were carried out using a range of process severities. Subsequent treatment of the liquid products with HCl produced raffinates containing less than 0.1 wt % nitrogen, with potential as catalytic cracking feedstock. The second approach removes phenolic compounds from coal liquids before hydrotreatment. Removal of phenolics reduces hydrogen requirements and increases the rate of hydrodenitrogenation of the raffinate with the extent depending upon the type of extractant and the degree of extraction. Dimethylformaide, aqueous methanol and aqueous sodium hydroxide are effective extractants. Batch and continuous bench-scale units were employed to determine the effects of temperature, pressure, and space velocity on the hydrodenitrogenation of both the unextracted SRC-II middle distillate and extraction raffinate product. The process is capable of producing raffinates which can be upgraded to conventional refinery feedstocks. The extracts have potential as fuel ingredients or as chemical sources. The extraction of phenolics from a mixture of SRC-II naphtha and middle distillate received special attention. Batch and continuous extractions demonstrated that all of the phenolics can be removed from this heart-cut with an aqueous methanol extraction system. 41 figs., 43 tabs.
- Research Organization:
- Suntech, Inc., Marcus Hook, PA (USA). Applied Research and Development Dept.
- DOE Contract Number:
- AC22-76ET10592
- OSTI ID:
- 5082570
- Report Number(s):
- DOE/ET/10592-T7; FE-2306-63; ON: DE86002175
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Research and development of an advanced process for the conversion of coal to synthetic gasoline and other distillate fuels. Quarterly technical progress report No. 12, for the period October 1980-December 1980. Draft. [Dimethylformamide-heptane; methanol]
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Related Subjects
COAL LIQUIDS
CATALYTIC CRACKING
GASOLINE
SYNTHESIS
PHENOL
REMOVAL
COAL LIQUEFACTION
DENITRIFICATION
EXPERIMENTAL DATA
HYDROCHLORIC ACID
HYDROGENATION
NAPHTHA
SOLVENT EXTRACTION
SOLVENT-REFINED COAL
AROMATICS
CHEMICAL REACTIONS
COAL TAR OILS
CRACKING
DATA
DECOMPOSITION
DISTILLATES
ENERGY SOURCES
EXTRACTION
FLUIDS
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ACIDS
LIQUEFACTION
LIQUID FUELS
LIQUIDS
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PHENOLS
PYROLYSIS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010500 - Coal
Lignite
& Peat- Products & By-Products
010407 - Coal & Coal Products- Solvent Extraction- (-1987)