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Title: Pyrolysis process for producing condensed stabilized hydrocarbons utilizing a beneficially reactive gas

Abstract

In a process for recovery of values contained in solid carbonaceous material, the solid carbonaceous material is comminuted and then subjected to pyrolysis, in the presence of a carbon containing solid particulate source of heat and a beneficially reactive transport gas in a transport flash pyrolysis reactor, to form a pyrolysis product stream. The pyrolysis product stream contains a gaseous mixture and particulate solids. The solids are separated from the gaseous mixture to form a substantially solids-free gaseous stream which comprises volatilized hydrocarbon free radicals newly formed by pyrolysis. Preferably the solid particulate source of heat is formed by oxidizing part of the separated particulate solids. The beneficially reactive transport gas inhibits the reactivity of the char product and the carbon-containing solid particulate source of heat. Condensed stabilized hydrocarbons are obtained by quenching the gaseous mixture stream with a quench fluid which contains a capping agent for stabilizing and terminating newly formed volatilized hydrocarbon free radicals. The capping agent is partially depleted of hydrogen by the stabilization and termination reaction. Hydrocarbons of four or more carbon atoms in the gaseous mixture stream are condensed. A liquid stream containing the stabilized liquid product is then treated or separated into various fractions.more » A liquid containing the hydrogen depleted capping agent is hydrogenated to form a regenerated capping agent. At least a portion of the regenerated capping agent is recycled to the quench zone as the quench fluid. In another embodiment capping agent is produced by the process, separated from the liquid product mixture, and recycled.« less

Inventors:
 [1]
  1. (Culver City, CA)
Issue Date:
Research Org.:
OCCIDENTAL RESEARCH CORP
OSTI Identifier:
864171
Patent Number(s):
4324642
Assignee:
Occidental Research Corporation (Irvine, CA) OSTI
DOE Contract Number:  
AC22-80PC30264
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pyrolysis; process; producing; condensed; stabilized; hydrocarbons; utilizing; beneficially; reactive; gas; recovery; values; contained; solid; carbonaceous; material; comminuted; subjected; presence; carbon; containing; particulate; source; heat; transport; flash; reactor; form; product; stream; contains; gaseous; mixture; solids; separated; substantially; solids-free; comprises; volatilized; hydrocarbon; free; radicals; newly; formed; preferably; oxidizing; inhibits; reactivity; char; carbon-containing; obtained; quenching; quench; fluid; capping; agent; stabilizing; terminating; partially; depleted; hydrogen; stabilization; termination; reaction; atoms; liquid; treated; various; fractions; hydrogenated; regenerated; portion; recycled; zone; embodiment; produced; particulate solids; particulate solid; stream contains; free radical; transport gas; substantially solid; pyrolysis process; values contained; liquid stream; reactive gas; containing solid; particulate source; solid particulate; gaseous stream; product stream; gaseous mixture; carbon atoms; carbonaceous material; solid carbonaceous; stream containing; carbon containing; liquid product; carbon atom; capping agent; free radicals; liquid containing; pyrolysis product; solid carbon; pyrolysis reactor; flash pyrolysis; volatilized hydrocarbon; hydrocarbons utilizing; carbon free; product mix; /208/201/585/

Citation Formats

Durai-Swamy, Kandaswamy. Pyrolysis process for producing condensed stabilized hydrocarbons utilizing a beneficially reactive gas. United States: N. p., 1982. Web.
Durai-Swamy, Kandaswamy. Pyrolysis process for producing condensed stabilized hydrocarbons utilizing a beneficially reactive gas. United States.
Durai-Swamy, Kandaswamy. Fri . "Pyrolysis process for producing condensed stabilized hydrocarbons utilizing a beneficially reactive gas". United States. https://www.osti.gov/servlets/purl/864171.
@article{osti_864171,
title = {Pyrolysis process for producing condensed stabilized hydrocarbons utilizing a beneficially reactive gas},
author = {Durai-Swamy, Kandaswamy},
abstractNote = {In a process for recovery of values contained in solid carbonaceous material, the solid carbonaceous material is comminuted and then subjected to pyrolysis, in the presence of a carbon containing solid particulate source of heat and a beneficially reactive transport gas in a transport flash pyrolysis reactor, to form a pyrolysis product stream. The pyrolysis product stream contains a gaseous mixture and particulate solids. The solids are separated from the gaseous mixture to form a substantially solids-free gaseous stream which comprises volatilized hydrocarbon free radicals newly formed by pyrolysis. Preferably the solid particulate source of heat is formed by oxidizing part of the separated particulate solids. The beneficially reactive transport gas inhibits the reactivity of the char product and the carbon-containing solid particulate source of heat. Condensed stabilized hydrocarbons are obtained by quenching the gaseous mixture stream with a quench fluid which contains a capping agent for stabilizing and terminating newly formed volatilized hydrocarbon free radicals. The capping agent is partially depleted of hydrogen by the stabilization and termination reaction. Hydrocarbons of four or more carbon atoms in the gaseous mixture stream are condensed. A liquid stream containing the stabilized liquid product is then treated or separated into various fractions. A liquid containing the hydrogen depleted capping agent is hydrogenated to form a regenerated capping agent. At least a portion of the regenerated capping agent is recycled to the quench zone as the quench fluid. In another embodiment capping agent is produced by the process, separated from the liquid product mixture, and recycled.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

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