A method and system including a double rotary kiln pyrolysis or gasification of waste material

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Description

A method is described for destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns define a cylindrical annular space with the inlet being positioned in registry with the axis of rotation of the ganged kilns. During operation, the temperature of the wall of the inner rotary kiln at the inlet is not less than about 500 C to heat the particulate material to a temperature in the range of from about ... continued below

Physical Description

22 p.

Creation Information

McIntosh, M.J. & Arzoumanidis, G.G. December 31, 1995.

Context

This patent is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 68 times . More information about this patent can be viewed below.

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Description

A method is described for destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns define a cylindrical annular space with the inlet being positioned in registry with the axis of rotation of the ganged kilns. During operation, the temperature of the wall of the inner rotary kiln at the inlet is not less than about 500 C to heat the particulate material to a temperature in the range of from about 200 C to about 900 C in a pyrolyzing atmosphere to reduce the particulate material as it moves from the one end toward the other end. The reduced particulates including char are transferred to the annular space between the inner and the outer rotating kilns near the other end of the inner rotating kiln and moved longitudinally in the annular space from near the other end toward the one end in the presence of oxygen to combust the char at an elevated temperature to produce a waste material including ash. Also, heat is provided which is transferred to the inner kiln. The waste material including ash leaves the outer rotating kiln near the one end and the pyrolysis vapor leaves through the particulate material inlet.

Physical Description

22 p.

Notes

OSTI as DE98001643

Source

  • Other Information: PBD: 1995

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  • Other: DE98001643
  • Report No.: PATENTS-US--A8557656
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 555384
  • Archival Resource Key: ark:/67531/metadc691436

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 31, 1995

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • Dec. 16, 2015, 5:12 p.m.

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Citations, Rights, Re-Use

McIntosh, M.J. & Arzoumanidis, G.G. A method and system including a double rotary kiln pyrolysis or gasification of waste material, patent, December 31, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc691436/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.