Producing coal tar with a low content of quinoline insolubles

Journal Article · Wed Aug 01 04:00:00 EDT 1984 · Coke Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5212791

Markov, V V; Petropol'skaya, V M; Batyeva, T S; Semenenko, L E; Dedikov, S I; Sibirko, V P; Storozhenko, O T

The quality of coal tar has deteriorated recently due to lack of oven capacity and investment, changes in the raw material base, and the adoption of smokeless charging which has greatly increased the proportion of ash in the tar. At the same time, customer requirements have become more stringent, particularly with regard to quinoline insolubles. Plants operating tar centrifuges have shown that water and ash can be removed by as much as 70% and 40% respectively. A study of tar centrifuging rheology has shown that diluents such as toluene and anthracene fractions are essential; toluene is preferred as it operates at a lower temperature. Addition of 30% toluene with 3 min. centrifuging reduces the toluene insolubles, and a longer centrifuging period reduces the quinoline insolubles to admissible levels.

• OSTI ID: 5212791
• Journal Information: Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 8; ISSN COKCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010500 -- Coal
Lignite
& Peat-- Products & By-Products
AROMATICS
BENZENE
BLACK COAL
CARBONACEOUS MATERIALS
CENTRIFUGATION
CLEANING
COAL
COAL TAR
DILUTION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PARTICLE SIZE
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
RHEOLOGY
SEPARATION PROCESSES
SIZE
TAR
TEMPERATURE EFFECTS