Combination coal deashing and coking process. [12 claims]

Patent · Tue Dec 14 04:00:00 EST 1976

OSTI ID:7316169

Bull, W C; Bullough, V L

Deashed solid coal effluent from a coal solvent deashing process in which raw coal is converted to deashed solid and liquid coal is passed to a delayed coker. The coker operates at a higher temperature than is employed in the solvent deashing process and produces deashed coke, liquid hydrocarbonaceous material including solvent boiling range liquid and hydrogen-containing gas. The hydrogen produced in the coker is derived from hydrogen which was previously consumed in the deashing step and can also include hydrogen contained in the raw coal. The solvent boiling range liquid and hydrogen produced in the coker are recycled to the solvent deashing step. Since the coker supplies a portion of the solvent required in the deashing step, the deashing step is operated to produce only a portion of its recycle liquid solvent requirement, thereby conserving hydrogen. 12 claims, 7 drawing figures.

• Assignee: Gulf Oil Corp.
• Patent Number(s): US 3997422
• OSTI ID: 7316169
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401 -- Coal & Coal Products-- Carbonization-- (-1987)
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010407 -- Coal & Coal Products-- Solvent Extraction-- (-1987)
ASHES
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
COAL GAS
COKING
DEASHING
DECOMPOSITION
DESULFURIZATION
DIAGRAMS
ELEMENTS
ENERGY SOURCES
FLOWSHEETS
FLUIDS
FOSSIL FUELS
FUELS
GASES
NONMETALS
PRODUCTION
REMOVAL
RESIDUES
SOLVENT-REFINED COAL
SRC PROCESS
SULFUR