Pyrolysis process for producing condensed stabilized hydrocarbons utilizing a beneficially reactive gas
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.
- Assignee:
- Occidental Research Corp
- Patent Number(s):
- US 4324642
- OSTI ID:
- 5150603
- Resource Relation:
- Patent File Date: Filed date 26 Aug 1980; Other Information: PAT-APPL-181597
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pyrolysis process for stabilizing volatile hydrocarbons utilizing a beneficially reactive gas
Pyrolysis process utilizing a beneficially reactive gas
Related Subjects
COAL
PYROLYSIS
CARBON DIOXIDE
COMMINUTION
FLUE GAS
HEAT
HYDROCARBONS
RADICALS
STABILIZATION
STEAM
VOLATILE MATTER
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASEOUS WASTES
MATERIALS
MATTER
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES
010406* - Coal & Coal Products- Pyrolysis & Cracking- (-1987)