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Distilling solid carbonaceous materials

Patent:

Abstract

In a process of distilling solid carbonaceous materials with by-product recovery, the time factor and the temperature gradient during the distillation period are so controlled that a temperature difference exceeding 150/sup 0/C is avoided between the temperatures at the center and periphery of any suitable size of material or thickness of fuel bed. The material is heated by direct contact with an inert gas, such as water gas, producer gas, or combustion gases, which is passed in counterflow to the material and whose volume is such as to lower the vapor tension or partial pressure of the volatilizable oils and to withdraw the oils without cracking of the oil vapors. The material may be subjected to a preliminary heat treatment by gases containing 2 to 3 percent of free oxygen to reduce its coking properties, and free oxygen may be added either to the heating gases during the heat treatment, or to the retort and heating gases and vapors to polymerize resinous bodies prior to condensation or during condensation and while the oils are still wholly or partially in the vapor state.
Publication Date:
Dec 04, 1926
Product Type:
Patent
Report Number:
GB 287381
Reference Number:
EDB-79-023370
Subject:
01 COAL, LIGNITE, AND PEAT; 04 OIL SHALES AND TAR SANDS; CARBONACEOUS MATERIALS; DISTILLATION; COMBUSTION PRODUCTS; HEATING; PRODUCER GAS; TEMPERATURE CONTROL; TEMPERATURE GRADIENTS; WATER GAS; CONTROL; ENERGY SOURCES; FLUIDS; FUEL GAS; FUELS; GAS FUELS; GASES; INTERMEDIATE BTU GAS; LOW BTU GAS; SEPARATION PROCESSES; 010406* - Coal & Coal Products- Pyrolysis & Cracking- (-1987); 040402 - Oil Shales & Tar Sands- Surface Methods
OSTI ID:
6622677
Country of Origin:
United Kingdom
Language:
English
Submitting Site:
TIC
Size:
Pages: v
Announcement Date:
Feb 01, 1979

Patent:

Citation Formats

Nielsen, H, and Laing, B. Distilling solid carbonaceous materials. United Kingdom: N. p., 1926. Web.
Nielsen, H, & Laing, B. Distilling solid carbonaceous materials. United Kingdom.
Nielsen, H, and Laing, B. 1926. "Distilling solid carbonaceous materials." United Kingdom.
@misc{etde_6622677,
title = {Distilling solid carbonaceous materials}
author = {Nielsen, H, and Laing, B}
abstractNote = {In a process of distilling solid carbonaceous materials with by-product recovery, the time factor and the temperature gradient during the distillation period are so controlled that a temperature difference exceeding 150/sup 0/C is avoided between the temperatures at the center and periphery of any suitable size of material or thickness of fuel bed. The material is heated by direct contact with an inert gas, such as water gas, producer gas, or combustion gases, which is passed in counterflow to the material and whose volume is such as to lower the vapor tension or partial pressure of the volatilizable oils and to withdraw the oils without cracking of the oil vapors. The material may be subjected to a preliminary heat treatment by gases containing 2 to 3 percent of free oxygen to reduce its coking properties, and free oxygen may be added either to the heating gases during the heat treatment, or to the retort and heating gases and vapors to polymerize resinous bodies prior to condensation or during condensation and while the oils are still wholly or partially in the vapor state.}
place = {United Kingdom}
year = {1926}
month = {Dec}
}