Laboratory studies for separation of solids from SYNTHOIL gross product. Part 1. Additives to facilitate separation of solids from SYNTHOIL gross product. Part 2. Solvents to remove solids from coal liquefaction product

Technical Report · Mon Nov 01 00:00:00 EST 1976

DOI:https://doi.org/10.2172/7132528· OSTI ID:7132528

Huang, H; Fischer, J

(Part 1) A variety of surfactants and agglomerating agents have been added to coal-liquefaction product from the SYNTHOIL process to determine their effectiveness in decreasing the viscosity or inducing agglomeration of suspended solids in the product (and consequently facilitating the removal of solids). More than two dozen additives were tested; however, only two caused a small reduction in the viscosity of the coal-liquefaction product. In other tests, viscosity-reducing additives and five agglomerating agents were evaluated to determine if they would improve the settling of solids in the coal-liquefaction product. No improvement in solids settling was observed. (Part 2) A number of organic solvents have been added to coal-liquefaction product from the SYNTHOIL process to determine their effectiveness in promoting the precipitation of suspended solids in the product. High-temperature settling of the product in the absence of a foreign solvent does not appear to be a promising mechanism for solids removal from this product. However, the promoter-solvent de-ashing scheme has been demonstrated to be a potentially attractive solids-liquid separation method, and kerosene has been found to be an effective promoter solvent for the SYNTHOIL gross product.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 7132528
• Report Number(s): ANL-76-91
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUIDS
DEASHING
VISCOSITY
SYNTHOIL PROCESS
AGGLOMERATION
COAL LIQUEFACTION
KEROSENE
ORGANIC SOLVENTS
SEPARATION PROCESSES
SURFACTANTS
TEMPERATURE DEPENDENCE
FUELS
LIQUEFACTION
PETROLEUM PRODUCTS
SOLVENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction