Thermal and chemical remediation of mixed wastes

Patent · Wed Jan 01 00:00:00 EST 1997

OSTI ID:871273

Nelson, Paul A ^[1]; Swift, William M ^[2]

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1. Wheaton, IL
2. Downers Grove, IL

A process for treating organic waste materials without venting gaseous emissions to the atmosphere which includes oxidizing the organic waste materials at an elevated temperature not less than about 500.degree. C. with a gas having an oxygen content in the range of from about 20% to about 70% to produce an oxidation product containing CO.sub.2 gas. The gas is then filtered to remove particulates, and then contacted with an aqueous absorbent solution of alkali metal carbonates or alkanolamines to absorb a portion of the CO.sub.2 gas from the particulate-free oxidation product. The CO.sub.2 absorbent is thereafter separated for further processing. A process and system are also disclosed in which the waste materials are contacted with a reactive medium such as lime and product treatment as described.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: University of Chicago (Chicago, IL)
• Patent Number(s): US 5697307
• OSTI ID: 871273
• Country of Publication: United States
• Language: English

Related Subjects

thermal
chemical
remediation
mixed
wastes
process
treating
organic
waste
materials
venting
gaseous
emissions
atmosphere
oxidizing
elevated
temperature
500
degree
gas
oxygen
content
range
20
70
produce
oxidation
product
containing
filtered
remove
particulates
contacted
aqueous
absorbent
solution
alkali
metal
carbonates
alkanolamines
absorb
portion
particulate-free
thereafter
separated
processing
disclosed
reactive
medium
lime
treatment
described
metal carbonates
absorbent solution
mixed waste
mixed wastes
oxygen content
waste material
alkali metal
elevated temperature
waste materials
organic waste
product containing
active medium
metal carbonate
oxidation product
metal carbon
gaseous emissions
chemical remediation
venting gas
venting gaseous
treating organic
remove particulate
aqueous absorbent
duct containing
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