Solvent Refined Coal (SRC) process: trace elements. Research and development report No. 53, interim report No. 30. Volume III. Pilot plant development work. Part 6. The fate of trace elements in the SRC process. [111 references]

Technical Report · Fri Feb 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5044975· OSTI ID:5044975

Khalil, S. R.

Instrumental neutron activation analysis was used to study the distribution and fate of up to 36 elements in the Solvent Refined Coal Process Pilot Plant located at Fort Lewis, Washington. The elements Ti, V, Mg, Ca, Al, Cl, Mn, As, Br, Na, K, Sm, La, Ga, Cu, Sb, Se, Hg, Ni, Co, Cr, Fe, Rb, Cs, Sc, Tb, Eu, Ce, Sr, Ba, Th, U, Hf, Ta, Zr and Zn were measured in feed coal, insoluble residues, process solvent, process and effluent waters, by-product sulfur, SRC-I solid product, liquid-liquid separator oils and SRC-II liquid products. The material balance was calculated for each element from the concentration data and yields of each process fraction for both the SRC-I and SRC-II processes. Except for Ti, Cl and Br in the SRC-I mode and Hg in the SRC-II mode, each element was substantially lower in the SRC products than in the original feed coal. Residues from the process contained more than 80% of the trace element content found in the coal, except for Hg. More than 98.5% of the total contents of K and Fe in coal were retained in the insoluble residues. Elements such as Hg, Se, As and Sb can form volatile compounds (such as Hg/sup 0/, H/sub 2/Se, AsH/sub 3/ and SbH/sub 3/) stable under the process conditions. The high enhancement factors of Se (957), As (202) and Sb (27.4) in the aqueous phase of the separator water compared to that of the oil are evidence for the formation of volatile species which are more soluble in water than in the oil phase.

• Research Organization: Washington State Univ., Pullman (USA). Nuclear Radiation Center
• Sponsoring Organization: USDOE
• DOE Contract Number: AC01-76ET10104
• OSTI ID: 5044975
• Report Number(s): DOE/ET/10104-T3; TRN: 80-017685
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BY-PRODUCTS
ACTIVATION ANALYSIS
CHEMICAL EFFLUENTS
COAL
COAL LIQUIDS
ORGANIC SOLVENTS
RESIDUES
SRC PROCESS
CHEMISTRY
SRC-II PROCESS
WASTE WATER
ANTIMONY
ARSENIC
BROMINE
CARBONYLS
CHEMICAL COMPOSITION
CHEMICAL STATE
CHLORINE
CHROMIUM
COAL LIQUEFACTION
COBALT
ELEMENTS
EXPERIMENTAL DATA
IRON
MATERIAL BALANCE
MERCURY
NICKEL
ORGANOMETALLIC COMPOUNDS
POTASSIUM
SAMPLING
SELENIUM
TITANIUM
TRACE AMOUNTS
WATER TREATMENT
YIELDS
ALKALI METALS
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
DATA
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HALOGENS
HYDROGEN COMPOUNDS
INFORMATION
LIQUEFACTION
LIQUID WASTES
LIQUIDS
MATERIALS
METALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SEMIMETALS
SOLVENTS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
WASTES
WATER
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
400101 - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures