Thermal and chemical remediation of mixed waste

Patent · Sat Jan 01 04:00:00 EST 1994

OSTI ID:869433

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

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1. Wheaton, IL
2. Downers Grove, IL

A process and system for treating organic waste materials without venting gaseous emissions to the atmosphere. A fluidized bed including lime particles is operated at a temperature of at least 500.degree. C. by blowing gas having 20%/70% oxygen upwardly through the bed particles at a rate sufficient to fluidize same. A toxic organic waste material is fed into the fluidized bed where the organic waste material reacts with the lime forming CaCO.sub.3. The off gases are filtered and cooled to condense water which is separated. A portion of the calcium carbonate formed during operation of the fluidized bed is replaced with lime particles. The off gases from the fluidized bed after drying are recirculated until the toxic organic waste material in the bed is destroyed.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: University of Chicago (Chicago, IL)
• Patent Number(s): US 5335609
• OSTI ID: 869433
• Country of Publication: United States
• Language: English

Related Subjects

/110/422/
20
500
70
atmosphere
bed
bed particles
blowing
caco
calcium
calcium carbonate
carbonate
chemical
chemical remediation
condense
cooled
degree
destroyed
drying
emissions
fed
filtered
fluidize
fluidized
fluidized bed
formed
forming
gas
gaseous
gaseous emissions
gases
including
lime
material
materials
mixed
mixed waste
operated
operation
organic
organic waste
oxygen
particles
portion
process
rate
rate sufficient
reacts
recirculated
remediation
replaced
separated
sufficient
temperature
thermal
toxic
toxic organic
treating
treating organic
upwardly
venting
venting gas
venting gaseous
waste
waste material
waste materials
water